All The Claims

What is claimed is:

1. A mobile communication system, comprising:
a base station;
a mobile station terminal; and
controlling means for limiting output of the mobile station terminal. said controlling means comprising:
means for sending a reply message to said base station on reception of a call signal addressed to said mobile station terminal sent from said base station, in place of said mobile station terminal, a wireless communication of said mobile station terminal with said base station being limited.
2. The mobile communication system, as defined in claim 1, said controlling means further comprising:
means for sending out an output limitation command signal to the mobile station terminal located in a site where use of the mobile station terminal is limited,
means for receiving information containing said reply message sent back from said mobile station terminal which receives said output limitation command signal to enter into an output-limiting mode; and
means for registering and managing the mobile station terminal as an output-limited terminal.
3. A mobile communication system, comprising:
a base station;
a mobile station terminal; and
controlling means for limiting output of the mobile station terminal, said controlling means comprising:
means for causing a call incoming to arrive with a low powered radio wave at the mobile station terminal in a output-limited mode on reception of said call incoming addressed to said mobile station terminal, said means transmitting a reply message in response to said incoming to the mobile station terminal in place of the mobile station terminal to the base station.
4. A portable telephone set output limitation management device comprising:
means for sending out an output limitation command signal to a portable telephone set located in a site where use of a portable telephone set is limited through a first antenna accommodated in the site where use of a portable telephone set is limited; and
means for receiving information proper to the portable telephone set transmitted from the portable telephone set which has received the output limitation command signal and which has entered into an output limiting state via said first antenna to register and supervise the portable telephone set in the output limiting state along with the information proper to the portable telephone set.
5. The portable telephone set output limitation management device as defined in claim 4 further comprising:
a second antenna for having wireless communication with the base station; and
means for retrieving a reply message information, from information registered as the information proper to the portable telephone set in case of an incoming of a call to the portable telephone set in the output limited state to transmit said reply message automatically to an originating side in place of the portable telephone set, said information proper to the portable telephone set transmitted from said portable telephone set which has entered into the output limiting state containing the reply message information.
6. The portable telephone set output limiting management device as defined in claim 4 or 5 wherein
said information proper to the portable telephone set contains an identification information of the portable telephone set, number of the portable telephone set, reply message information and a notification information flag for specifying with which response pattern the portable telephone output limiting management device responds to a call from the base station;
there being provided means for registering and supervising the information in a table using the management number of the portable telephone set as a key;
the reply message is automatically transmitted to said base station, based on a state of the notification information flag and the reply message information registered in the table, in place of the portable telephone set, responsive to the call from the base station to the portable telephone set being set in the output limiting mode.
7. The portable telephone set output limiting management device as defined in claim 4 or 5 wherein said notification information flag contains a plurality of information flags for selecting possible presence of notification of a portable telephone set number pre-set in the portable telephone set, possible presence of a voice message, possible presence of notification of a current site, and possible presence of suppression of an automatic reply function by the portable telephone output limiting management device.
8. A portable telephone set comprising:
means for performing control for limiting a wireless communication with a base station in an output-limited mode on reception of a predetermined output limiting command information transmitted through an control device provided in a site where use of the portable telephone set is limited.
means for transmitting information proper to the portable telephone to the control device in a low power transmission mode.
9. A portable telephone set comprising:
means for performing control for limiting a wireless communication with a base station in an output limited state on reception of an output limiting command information transmitted through an antenna provided in a site where use of a portable telephone set is limited;
means for transmitting information proper to the portable telephone to an portable telephone output limiting management device, said portable telephone output limiting management device comprising means for receiving said information; and means for retrieving a reply message information from said information, responsive to an incoming to the portable telephone set in the output limited state to transmit said reply message automatically to an originating side in place of the portable telephone set.
10. The portable telephone set as defined in claim 8 or 9 wherein the information proper to the portable telephone set contains identification information of said portable telephone set, portable telephone number, response message information and a communication information flag for specifying response pattern with which said portable telephone output limiting management device is to reply to a call from a base station.
11. The portable telephone set as defined in claim 8 or 9 further comprising:
Means for informing an owner of the portable telephone set of an entrance into the output limiting mode on detecting the reception of the output limiting command information by sounder vibration.
12. The portable telephone set as defined in claim 9 further comprising:
means for sending out a transmission power limiting command to an transmission power limiting circuit on detection of reception of said output limiting command information;
means for commanding transmission of identification information of the portable telephone set, telephone number and for performing control for commanding sending of a voice message if data of said voice message data is recorded in said voice message storage means; wherein,
on entrance to the output limiting mode, fact of such entrance to the output limiting mode, the identification information of the portable telephone set, the telephone number, response voice message information and the notification portable telephone set identification information consisting of a notification information flag for specifying with which response pattern the portable telephone output limiting management device is to reply to the call-out from the base station, are transmitted to the first transmissionreception antenna for notification to the portable telephone output limiting management device.
13. A portable telephone set output limiting system comprising:
a portable telephone output limiting management device for transmitting a radio wave signal of an output limiting command information from a first antenna provided on a site where use of a portable telephone set is limited; wherein
when the portable telephone set enters said site to receive the output limitation command information from said first antenna, the output limiting mode is initiated to halt direct exchange with a base station to transmit to said first antenna of said portable telephone output limiting management device a fact of entrance to an output cessation mode of the portable telephone set, and information proper to the portable telephone set including the portable telephone set management number, telephone number, a reply message and a notification information flag, if need be, with an a low powered radio wave; and wherein
the portable telephone output limiting management device receives the information proper to the portable telephone set sent out from the portable telephone set through said first antenna to update and register the information including the notification information flag in a management table;
said portable telephone output limiting management device regarding that the portable telephone sets registered in said management table as the portable telephone sets placed under its control so that subsequently the portable telephone output limiting management device responds to a call from a base station in place of the portable telephone set in the output limited state until the portable telephone set in the output cessation mode exits said site.
14. The portable telephone set output limiting system as defined in claim 13 wherein, said portable telephone output limiting management device further comprising:
means for collating on detecting the call signal from the base station whether the call is that for the portable telephone set managed and controlled by said portable telephone output limiting management device, by retrieving in the management table and for commanding reply message assembling means, if as a result of the collation, the portable telephone set of the call destination is under control of said portable telephone output limiting management device, to send information on a management number of the portable telephone set and an output of the reply message;
said reply message assembling means captures information on the reply message from message send-out means, using the management number of the portable telephone set as a retrieving key, to insert information data on the current site if need be to synthesize voice data; and wherein
the synthesized voice data is transmitted from said message send-out means via a transmission circuit and a second antenna to said base station to make a response in place of the output-limited portable telephone set.
15. A portable telephone output limiting management device comprising:
means for causing a call incoming to arrive at an output-limited portable telephone set on reception of said call incoming addressed to said output-limited portable telephone set, said means automatically transmitting a reply message to a base station.
16. A portable telephone output limiting management device comprising:
means for causing a call incoming to arrive at a output-limited portable telephone set under output limitation in reception to said call incoming addressed to said output-limited portable telephone set; and
means for causing hand-over to a repeater device provided at a site where use of said portable telephone set is permitted, on detecting that the portable telephone set has been moved to the site where use of said portable telephone set is permitted.
17. A portable telephone output limiting management device comprising:
means for sending out an output limitation command signal for limiting outputting of a radio wave via a first antenna provided at a site where use of a portable telephone set is limited to a portable telephone set located in a site where use of a portable telephone set is limited;
means for receiving information proper to the portable telephone set, transmitted from the portable telephone set which has received the output limiting command signal to halt the communication with a base station so as to be in the output-limited state, via said first antenna, to register and supervise the portable telephone set in the output-limited state along with the information proper to the portable telephone set including call incoming permitting information;
a second antenna for having radio communication with said base station; and
means for having reference to the incoming permitting information for information proper to the portable telephone set when there is the incoming call to the portable telephone set in the output-limited state from said base station, said means advising said portable telephone set of the fact of the incoming call in case the incoming of the call is permitted.
18. The portable telephone output limiting management device as defined in claim 17 comprising:
means for communicating to an originating side a message stating the incoming of a call by transmitting said message to the base station on communicating the incoming of the call to said base station.
19. The portable telephone output limiting management device as defined in claim 17 or 18 comprising:
means for registering the information proper to the portable telephone set on a management table, using a management number of the portable telephone set as a key, for management, said information including the portable telephone set identification information, portable telephone set number, reply message information, a notification information flag for specifying with which pattern the portable telephone output limiting management device is to reply to a call from the base station and an incoming permission flag; wherein
if said incoming permission flag registered in said table is on, a call from the base station to a portable telephone set in the output limiting mode is caused to arrive at said portable telephone set and a reply message is automatically transmitted to said base station, based on a state of said notification information flag and the reply message information.
20. The portable telephone output limiting management device as defined in any one of claims 13 to 15 further comprising:
means for transmitting a reply message stating that the portable telephone set is moving to said base station, on receiving from the portable telephone set in output-limited mode a response to a call incoming transmitted with a radio wave transmitted with limited transmission power, until a user of the portable telephone set moves from a use-limited site for the portable telephone set to a use-permitted site for the portable telephone set.
21. The portable telephone output limiting management device as defined in any one of claims 17 to 19 further comprising:
control means for commanding hand-over to a radio channel of an antenna connected to a repeater device for a communication between the output-limited portable telephone set and a base station if a pre-set response from the portable telephone set via a third antenna provided in a use-permitted site for the portable telephone set, termed to as a second response to the incoming call, based on a detection of a fact that the user of the portable telephone set has moved to the use-permitted site; and
means for requesting the repeater device to establish a radio channel between the base station and the repeater device responsive to said hand-over command.
22. The portable telephone output limiting management device as defined in any one of claims 17 to 21 further comprising:
control means for performing time management processing to await reception of a response signal indicating that the user of the portable telephone set has moved to the use-permitted site after reception of an incoming response from the portable telephone set to the notification as to the incoming call to said portable telephone set, said control means initiating a disconnection of a channel connection to said base station if no response signal is obtained from said portable telephone set after awaiting for the pre-set time.
23. A portable telephone set comprising:
means for detecting a reception of the output limitation signal from the portable telephone output limiting management device as defined in any one of claims 15 to 22;
means for sending back information proper to the portable telephone set; and
means for detecting an incoming signal during an output limiting mode to send back an output-limiting-time-incoming information.
24. A portable telephone set comprising:
means for detecting reception of the output controlling command information via said first antenna from the portable telephone output limiting management device as defined in any one of claims 15 to 22;
means for limiting transmission power of the portable telephone set based on a result of detection of the output limitation command information;
means for transmitting information proper to the portable telephone set to the portable telephone output limiting management device under a limited transmission power;
means for notifying an incoming by a vibrator if, during an output limiting mode, the incoming signal from the portable telephone output limiting management device is detected; said means detecting the actuation of an incoming reply key under output limitation mode, said means transmitting information on the incoming response information with limited transmission power to the portable telephone output limiting management device.
25. The portable telephone set as defined in any one of claims 15 to 22 comprising:
means for transmitting a limitation command of transmission power to an output limiting circuit and for transmitting portable telephone set identification information and telephone number of the portable telephone set on detection of reception of said output limitation command information; and
means for commanding voice data to be sent out if said voice data is pre-stored in voice message storage means;
wherein on entrance to an output limiting mode, a state of entrance to the output limiting mode and the portable telephone set identification information including the portable telephone set identification information of the portable telephone set, the portable telephone set number, information on the reply voice message, a notification information flag for designating with which response pattern the portable telephone output limiting management device is to reply to the call from the base station, and an incoming permission flag are sent with limited transmission power to the portable telephone output limiting management device.
26. A repeater device comprising:
means for effecting relay connection of a radio channel between a portable telephone set under an output limitation mode and a base station; and
means for accepting hand-over to said portable telephone set from a portable telephone output limiting management device as defined in any one of claims 15 to 22.
27. A repeater device comprising:
means for having communication with a matching circuit provided in the portable telephone output limiting management device as defined in any one of claims 15 to 22 to effect transmissionreception of information on a vacant channel, hand-over request and hand-over acceptance permission to accept a radio channel of the portable telephone set placed under the output limitation mode.
28. A portable telephone set output limiting system comprising:
a portable telephone output limiting management device for transmitting a radio wave signal of the output limiting command information limiting the outputting of a radio wave of the portable telephone set from a first antenna provided in a site where use of the portable telephone set is limited; wherein
when the portable telephone set enters said site to receive an output limitation command information from said first antenna, an output limiting mode is initiated to halt direct exchange with a base station to send a state of the portable telephone set entering into the output halting mode and the information proper to the portable telephone set including a portable telephone set management number, a telephone number, a reply message if need be, communication information flag and incoming permission flag to the portable telephone output limiting management device with a radio wave the transmission power of which is limited;
said portable telephone output limiting management device receives the information proper to the portable telephone set sent out by the portable telephone set via said first antenna to update and register the contents of the information in a management table from one portable telephone set to another;
said portable telephone output limiting management device sets the portable telephone set registered in said management table as a portable telephone set placed under its management;
there being provided a second antenna for having radio communication with the base station;
if there is an incoming call from the base station to a portable telephone set in the output limiting mode, reference is had to the incoming permission information of said management table from the information proper to the portable telephone set; if the incoming call is permitted, the effect of the call incoming is advised to the portable telephone set and a message to the effect that a call is incoming is transmitted to the base station for notification to the originating side.
29. The portable telephone set output limiting system as defined in claim 28 further comprising:
a repeater device provided in a use-permitted site for the portable telephone set, said repeater device effecting connection between the portable telephone set and the base station, and for accepting a radio channel of the portable telephone set placed under output limitation mode after hand-over request from the portable telephone output limiting management device; and
means for transmitting to said base station a message to the effect that the portable telephone set is moving, on acceptance by the portable telephone output limiting management device of a response to an incoming call transmitted with a radio wave with a limited transmission power from the portable telephone set in the output limited mode, until the time the user of the portable telephone set moves from the use-limited site to the use-permitted site; wherein
if a pre-set response signal transmitted from said portable telephone set via a third antenna provided in the use-permitted site and which is connected to the portable telephone output limiting management device is received, said portable telephone set is verified to have moved to the use-permitted site, whereupon a command is issued for effecting hand-over to a radio channel of an antenna connected to the repeater device and the issuance of the message indicating the movement is halted.
30. A repeater device comprising:
means for receiving a hand-over command to a portable telephone set and for accepting hand-over of the portable telephone set which has entered an area of which the repeater device is in charge; and
means for effecting radio channel relaying connection between the output-limited portable telephone set and the base station.
31. The repeater device as defined in claim 31 further comprising:
means for issuing a hand-over command to another repeater device.
32. A repeater device having a function of relaying between an output-limited portable telephone set and a base station and which is configured for accepting hand-over of said portable telephone set from the portable telephone output limiting management device as defined in any one of claims 15 to 22, comprising:
means for having communication via a cable or a radio path with said portable telephone output limiting management device;
different frequencies being allotted to a radio channel adapted for having communication with the portable telephone set (termed as an inside communication channel) and said base station and to another radio channel adapted for having communication with said base station (termed as an outside communication channel);
a radio wave having a limited output being used for communication with said portable telephone set by said inside communication channel;
means for periodically communicating the information on the vacant channel of said inside communication channel under normal situation to said portable telephone output limiting management device;
means for sending out a network establishing request to said base station on reception of the network establishing request for the outside communication channel from said portable telephone output limiting management device, said means receiving a notification to the effect that a new radio channel has been acquired at said base station to notify the effect of acquirement of the outside communication channel to said portable telephone output limiting management device; and
means for notifying the effect of hand-over completion to said base station on reception of the notification of the hand-over completion from said portable telephone set if a hand-over command has previously been issued from the portable telephone output limiting management device to the portable telephone set, for switching to relaying communication between said portable telephone set and the base station.
33. A repeater device having the function of relaying between an output-limited portable telephone set and a base station and which is configured for accepting hand-over of said portable telephone set from the portable telephone output limiting management device as defined in any one of claims 15 to 22, wherein
different frequencies are assigned to a radio channel adapted for having communication with the portable telephone set (termed as an inside communication channel) and said base station and to another radio channel adapted for having communication with said base station (termed as an outside communication channel);
a radio wave having a limited output power being used for communication with said portable telephone set by said inside communication channel; the repeater device comprising:
means for periodically communicating information on the vacant channel of said inside communication channel under a normal situation to said portable telephone output limiting management device;
means for issuing a network establishing request to said base station on reception of a channel connection establishing request for the outside communication channel from said portable telephone output limiting management device, said means receiving a notification to an effect that a new radio channel has been acquired at said base station to notify an effect of acquirement of the outside communication channel via said device control channel to said portable telephone output limiting management device; and
means for notifying an effect of hand-over completion to said base station on reception of the notification of the hand-over completion from said portable telephone set if a hand-over command has previously been issued from the portable telephone output limiting management device to the portable telephone set, for switching to relay communication between said portable telephone set and the base station.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A computer implemented method for interacting with a user via a speech-based user interface, comprising the steps of:
acquiring spoken input from a user in a form of a phrase of one or more words;
determining, using a plurality of different domains, whether the phrase is a query or a command; and
retrieving and presenting relevant items from a plurality of databases if the phrase is the query; and otherwise
performing an operation if the phrase is a command.
2. The method of claim 1, in which the phrase includes variables and modifiers if the phrase is the command.
3. The method of claim 1, in which the phrase is in a form of particles, and an index to the items is in the form of the particles.
4. The method of claim 1, in which the relevant items are segregated on a domain-by-domain basis.
5. The method of claim 1, in which the relevant items are presented in a relevance order.
6. The method of claim 1, in which the relevant items commingled in a combined result list.
7. The method of claim 1, in which all possible items form a set of items, and further comprising:
grouping items in the set of into subsets of items, in which each subset of items forms one of the plurality of domains;
retrieving the items from one or more of the plurality of domains in response to the query; and
selecting a particular domain as most relevant to the query if the retrieved items are least likely to have been obtained by random draw from the entire set of items.

1. A device for processing optical fibers, comprising:
a pair of pulleys arranged to receive in a space between them a first optical fiber element comprising one or more optical fibers contained in a coating, and
a drive mechanism for causing the pulleys to rotate and to pull the first optical fiber element by contact between the outer surface of the first optical fiber element and the pulleys, wherein
a first pulley in the pair of pulleys comprises a circumferential first groove in a circumferential contact surface for receiving the first optical fiber element, the first groove being shaped to accommodate the first optical fiber element such that less than half of the cross sectional surface area of the first optical fiber element protrudes out of the first groove, and
a second pulley in the pair of pulleys comprises a circumferential contact surface contacting a surface of the first optical fiber element.
2. The device according to claim 1, wherein at a level of a center point in the cross sectional area of the first optical fiber element the first groove has in the direction of a rotation axis of the first pulley a width corresponding substantially to the width of the first optical fiber element.
3. The device according to claim 1, wherein at a level of a center point in the cross sectional area of the first optical fiber element the first groove has in the direction of a rotation axis of the first pulley a width which exceeds the width of the first optical fiber element with up to 20%.
4. The device according to claim 1, wherein at a level of a center point in the cross sectional area of the first optical fiber element the first groove has in the direction of a rotation axis of the first pulley a width which exceeds the width of the first optical fiber element with 2.5 to 10%.
5. The device according to claim 1, wherein the contact surface of the second pulley has a circumferential part protruding into the first groove in the first pulley for enclosing the first optical fiber element in a space delimited by the first and second pulleys.
6. The device according to claim 1, wherein the contact surface of the second pulley has a circumferential recess and the first pulley protrudes into the recess in the second pulley for enclosing the first optical fiber element in a space delimited by the first and second pulleys.
7. The device according to claim 1, wherein
one of the first and second pulleys comprises a circumferential second groove in the circumferential contact surface for receiving a second optical fiber element having different cross sectional dimensions than the first optical fiber element,
the second groove has different dimensions than the first groove for accommodating the second optical fiber element such that less than half of the cross sectional surface area of the second optical fiber element protrudes out of the second groove, and
the circumferential contact surface of the other one of the first and second pulley contacts a surface of the second optical fiber element.
8. The device according to claim 1, wherein the circumferential contact surface of at least one of the first and second pulleys is at least partially coated with a coating providing a roughened high friction contact surface.
9. The device according to claim 1, wherein the device comprises a cooling through for a liquid via which the first optical fiber element is led to the pair of pulleys.
10. The device according to claim 1, wherein the device comprises an extruder receiving one or more optical fibers and providing a plastic coating to surround the one or more optical fibers in order to produce the first optical fiber element.
11. The device according to claim 1, wherein
the coating of the first optical fiber element is a tube and the one or more optical fibers are loosely arranged inside the tube, and
the device comprises a main capstan arranged after the pair of pulleys to pull the first optical element, and
the pair of pulleys is arranged to pull the first optical fiber element with a higher speed than the main capstan for eliminating effects of post shrinkage.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A system for treating with suspended growth aerobic bacteria a fluid in a tank having a ceiling and a floor, the system comprising:
a. a pump for pumping air;
b. a conduit coupled to the pump for receiving air from the pump; and
c. an airlift tube positionable within the tank, wherein the airlift tube includes a tube interior and:
i. a diffuser located within the tube interior, connected to the conduit and arranged to diffuse air into the tube;
ii. one or more inlet ports positioned below the diffuser for receiving the fluid from within the tank; and
iii. an opening above the diffuser,

wherein the airlift tube is arranged to draw the fluid therein through the one or more inlet ports, through the diffuser and out through the opening
2. The system as claimed in claim 1 wherein the tube is made of a material that is of greater density than a density of the fluid.
3. The system as claimed in claim 1 further comprising a cross member extending through the tube.
4. The system of claim 3 further comprising a cord attachable to the cross member and arranged to suspend the tube from the ceiling of the tank.
5. The system as claimed in claim 1 further comprising a float attached to the tube and arranged to float the tube in the fluid within the tank.
6. The system as claimed in claim 1 further comprising a pH correction element located within the tank.
7. The system as claimed in claim 6 wherein the pH correction element includes a retention basket for retaining a pH neutralizing material therein.
8. The system as claimed in claim 7 wherein the pH neutralizing material is lime.
9. The system as claimed in claim 1 further comprising:
a. a cross member extending through the tube;
b. a cord attachable to the cross member and arranged to suspend the tube from the ceiling of the tank;
c. a retention basket removably attached to the cord, wherein the retention basket includes a lime pH neutralizing material therein.
10. The system of claim 1 comprising a plurality of the airlift tubes within the tank.
11. An airlift tube for treating with suspended growth aerobic bacteria a fluid in a tank having a ceiling and a floor, the airlift tube positionable within the tank, the airlift tube comprising
a. a tube interior;
b. a diffuser located within the interior of the tube, connectable to a source of air and arranged to diffuse the air into the interior of the tube;
c. one or more inlet ports positioned below the diffuser for receiving the fluid from within the tank; and
d. an opening above the diffuser,
wherein the airlift tube is arranged to draw the fluid therein through the one or more inlet ports, through the diffuser and out through the opening.
12. The tube as claimed in claim 11 made of a material that is of greater density than a density of the fluid.
13. The tube as claimed in claim 11 further comprising a cross member extending through the tube.
14. The tube as claimed in claim 13 further comprising a cord attachable to the cross member and arranged to suspend the tube from the ceiling of the tank.
15. The tube as claimed in claim 11, further comprising a float attached to the tube and arranged to float the tube in the fluid within the tank.
16. The tube as claimed in claim 11 further comprising a pH correction element located within the tank.
17. The tube as claimed in claim 16 wherein the pH correction element includes a retention basket for retaining a pH neutralizing material therein.
18. The tube as claimed in claim 17 wherein the pH neutralizing material is lime.
19. A method of treating a waste fluid, the method comprising the steps of:
a. directing the waste fluid through an inlet of a fluid containment tank and into an interior of the containment tank;
b. agitating the waste fluid within the tank;
c. exposing the waste fluid to suspension growth aerobic bacteria within the tank; and
d. transferring the waste fluid treated by agitation and exposure to the suspension growth aerobic bacteria out of the containment tank through an outlet, wherein the steps of agitating and exposing are carried out in an airlift tube within the interior of the containment tank, the airlift tube including:
i. a tube interior;
ii. a diffuser located within the interior of the tube, connectable to a source of air and arranged td diffuse the air into the interior of the tube;
iii. one or more inlet ports positioned below the diffuser for receiving the fluid from within the tank; and
iv. an opening above the diffuser,

wherein the airlift tube is arranged to draw the waste fluid therein through the one or more inlet ports, through the diffuser and out through the opening.
20. The method as claimed in claim 19 further comprising the step of suspending the airlift tube within the tank.
21. The method as claimed in claim 19 further comprising the step of adding a pH retention element into the tank, wherein the pH retention element is configured to retain a pH neutralizing material therein.
22. The method of claim 19 including the use of a plurality of the airlift tubes in tank.
23. A kit for use in the treatment of a waste fluid in a tank having a floor and a ceiling, the kit comprising:
a. an airlift tube;
b. a diffuser;
c. an air conduit;
d. a diffuser bracket; and
e. instructions for installing the airlift tube in the tank, wherein the instructions include:
i. placing the tube in a selectable position within the tank;
ii. inserting the bracket into the tube;
iii. placing the diffuser on the bracket;
iv. inserting the conduit into the tank;
v. connecting a first end of the conduit to the diffuser; and
vi. connecting a second end of the conduit to a pump.
24. The kit of claim 23 wherein the instructions for installing include the step of placing the tube on the floor of the tank.
25. The kit of claim 23 wherein the instructions for installing include the step of connecting the tube to the ceiling of the tank.
26. The kit of claim 23 wherein the instructions for installing include the step of floating the tube in the tank.
27. The kit of claim 23 further comprising a pH correction element.
28. The kit of claim 27 wherein the pH correction element includes lime chips.