Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
NZ749043B2 - Aerating lance assembly and aeration tank incorporating same - Google Patents
[go: Go Back, main page]

NZ749043B2 - Aerating lance assembly and aeration tank incorporating same - Google Patents

Aerating lance assembly and aeration tank incorporating same Download PDF

Info

Publication number
NZ749043B2
NZ749043B2 NZ749043A NZ74904317A NZ749043B2 NZ 749043 B2 NZ749043 B2 NZ 749043B2 NZ 749043 A NZ749043 A NZ 749043A NZ 74904317 A NZ74904317 A NZ 74904317A NZ 749043 B2 NZ749043 B2 NZ 749043B2
Authority
NZ
New Zealand
Prior art keywords
valve
lance pipe
pipe
tank
liquid
Prior art date
Application number
NZ749043A
Other versions
NZ749043A (en
Inventor
Michael Anderson
Raymond Anderson
Original Assignee
Aerofloat (Holdings) Pty Ltd
Filing date
Publication date
Application filed by Aerofloat (Holdings) Pty Ltd filed Critical Aerofloat (Holdings) Pty Ltd
Priority claimed from PCT/AU2017/000102 external-priority patent/WO2017193156A1/en
Publication of NZ749043A publication Critical patent/NZ749043A/en
Publication of NZ749043B2 publication Critical patent/NZ749043B2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23113—Mounting the bubbling devices or the diffusers characterised by the disposition of the bubbling elements in particular configurations, patterns or arrays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23114—Mounting the bubbling devices or the diffusers characterised by the way in which the different elements of the bubbling installation are mounted
    • B01F23/231143—Mounting the bubbling elements or diffusors, e.g. on conduits, using connecting elements; Connections therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23115—Mounting the bubbling devices or the diffusers characterised by the way in which the bubbling devices are mounted within the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23116—Means for manipulating the bubbling constructions or elements, e.g. for raising or lowering them
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23121—Diffusers having injection means, e.g. nozzles with circumferential outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23125—Diffusers characterised by the way in which they are assembled or mounted; Fabricating the parts of the diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
    • B01F23/237611—Air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/02—Odour removal or prevention of malodour
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/08—Aerobic processes using moving contact bodies
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

The present invention relates to the field of fluid aeration and, in particular, fluid aeration in a tank of the type having a fluid aerator or aerators requiring removal for cleaning and/or maintenance. The aeration tank (10) of the present invention may be a Moving Bed Bioreactor or Moving Bed Biofilm Reactor (MBBR) tank forming part of an MBBR wastewater treatment system, although the aeration tank (10) of the present invention may also have utility in other applications. The invention relates to methods for inserting and removing an aerating lance pipe (20) and pipework (22) from the aeration tank (10), the pipework (22) including a first valve (44) which, when closed, restricts a supply of air into the lance pipe (20) and further restricts any liquid from flowing upstream beyond the first valve (44) during retrieval of the lance pipe (20). A second valve (50) restricts flow of liquid from inside the tank (10) into the pipework (22) and is not operable to restrict the flow of liquid when the lance pipe (20) is inserted, wherein the second valve (50) is located downstream of the first valve (44). An isolation spacer (54) located between the first valve (44) and the second valve (50) includes a seal (56) that restricts the flow of liquid during retrieval of the lance pipe (20). A pipe union (58) is located upstream of the isolation spacer (54) and seal (56) wherein an annular groove (61) for accommodating the seal (56) is formed inside a space between an end of the isolation spacer (54) and an inside ridge of the pipe union (58). A valve union (46) is located upstream of the first valve (44) which allows the pipework (22) including the first valve (44) to be inserted and removed together with the lance pipe (20).

Claims (2)

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. A method of inserting a lance pipe assembly into an aeration tank holding liquid to be aerated, said lance pipe including: at least one lance pipe which when fully inserted extends into the tank, the lance pipe positioned relative to an operating liquid level of the tank such that the lance pipe is at least partially immersed in said liquid when the tank is filled to the operating liquid level, wherein at least a portion of the lance pipe at or adjacent an aerating end thereof includes a means of introducing air into the liquid to thereby aerate the liquid; and pipework associated with the lance pipe that includes pipework for directing air into the lance pipe, the pipework including: a first valve which, when closed, restricts a supply of air into the lance pipe and further restricts any liquid from flowing upstream beyond the first valve during retrieval of the lance pipe, a second valve for restricting flow of liquid from inside the tank into the pipework which is not operable to restrict the flow of liquid when the lance pipe is inserted, wherein the second valve is located downstream of the first valve, a valve union associated with the first valve, the valve union located upstream of the first valve and which, when opened or partially opened, allows for the first valve to be disconnected from the pipework at a position upstream of the first valve, an isolation spacer located between the first valve and the second valve, the isolation spacer having a greater cross-sectional dimension to that of the lance pipe to accommodate the lance pipe and including a seal that restricts the flow of liquid during retrieval of the lance pipe after the first valve is operated to restrict the supply of air into the lance pipe, wherein the seal restricts the flow of liquid when the second valve is open and after the lance pipe is retrieved to a point beyond the second valve but not beyond the seal, the isolation spacer further configured to accommodate the inserted lance pipe and enable retrieval of the lance pipe to a position in which the aerating end of the lance pipe is located upstream of the second valve and downstream of the seal to enable the second valve to be operated to restrict the flow of liquid therethrough, a pipe union located upstream of the isolation spacer and seal, and downstream of the first valve which, when disconnected, allows the lance pipe to move through the pipe union, wherein the lance pipe is retrievable from the tank together with a portion of the pipework between the valve union and the pipe union after the valve union is opened or partially opened to allow the first valve to be disconnected from the pipework and after the pipe union is disconnected to allow for retrieval of the lance pipe, and a tank adapter associated with a side wall aperture of the tank and configured to accommodate the lance pipe, wherein the lance pipe extends through the tank adapter into the tank, and wherein the tank adapter provides a sealed connection to the tank such that when the lance pipe is inserted, liquid from inside the tank is not able to escape through a space between a perimeter of the side wall aperture and an outer surface of the lance pipe, wherein an annular groove for accommodating the seal is formed inside a space between an end of the isolation spacer and an inside ridge of the pipe union, the method including: with the first valve closed, inserting the lance pipe beyond the seal but before the second valve such that the aerating end of the lance pipe is located inside the isolation spacer; opening the second valve; completing insertion of the lance pipe by pushing the lance pipe beyond the second valve into the aeration tank; connecting the pipe union; connecting the valve union associated with the first valve; and opening the first valve
2. A method of removing, from an aeration tank holding liquid to be aerated, a lance pipe, said lance pipe including: at least one lance pipe which when fully inserted extends into the tank, the lance pipe positioned relative to an operating liquid level of the tank such that the lance pipe is at least partially immersed in said liquid when the tank is filled to the operating liquid level, wherein at least a portion of the lance pipe at or adjacent an aerating end thereof includes a means of introducing air into the liquid to thereby aerate the liquid; and pipework associated with the lance pipe that includes pipework for directing air into the lance pipe, the pipework including: a first valve which, when closed, restricts a supply of air into the lance pipe and further restricts any liquid from flowing upstream beyond the first valve during retrieval of the lance pipe, a second valve for restricting flow of liquid from inside the tank into the pipework which is not operable to restrict the flow of liquid when the lance pipe is inserted, wherein the second valve is located downstream of the first valve, a valve union associated with the first valve, the valve union located upstream of the first valve and which, when opened or partially opened, allows for the first valve to be disconnected from the pipework at a position upstream of the first valve, an isolation spacer located between the first valve and the second valve, the isolation spacer having a greater cross-sectional dimension to that of the lance pipe to accommodate the lance pipe and including a seal that restricts the flow of liquid during retrieval of the lance pipe after the first valve is operated to restrict the supply of air into the lance pipe, wherein the seal restricts the flow of liquid when the second valve is open and after the lance pipe is retrieved to a point beyond the second valve but not beyond the seal, the isolation spacer further configured to accommodate the inserted lance pipe and enable retrieval of the lance pipe to a position in which the aerating end of the lance pipe is located upstream of the second valve and downstream of the seal to enable the second valve to be operated to restrict the flow of liquid therethrough, a pipe union located upstream of the isolation spacer and seal, and downstream of the first valve which, when disconnected, allows the lance pipe to move through the pipe union, wherein the lance pipe is retrievable from the tank together with a portion of the pipework between the valve union and the pipe union after the valve union is opened or partially opened to allow the first valve to be disconnected from the pipework and after the pipe union is disconnected to allow for retrieval of the lance pipe, and a tank adapter associated with a side wall aperture of the tank and configured to accommodate the lance pipe, wherein the lance pipe extends through the tank adapter into the tank, and wherein the tank adapter provides a sealed connection to the tank such that when the lance pipe is inserted, liquid from inside the tank is not able to escape through a space between a perimeter of the side wall aperture and an outer surface of the lance pipe, wherein an annular groove for accommodating the seal is formed inside a space between an end of the isolation spacer and an inside ridge of the pipe union, the method including: providing the pipework at an entry point into the tank such that said lance pipe extends substantially horizontally, said entry point being below an operating liquid level of the tank; closing the first valve to restrict air supply downstream of the first valve; disconnecting the valve union to enable removal of the first valve and associated downstream pipework; disconnecting the pipe union to enable movement of the lance pipe therethrough; retrieving the lance pipe and a portion of the pipework between the disconnected pipe union and disconnected valve union such that an aerating end of the lance pipe is retrieved beyond the second valve; and closing the second valve to restrict liquid flow out of the tank beyond the second valve.
NZ749043A 2017-05-09 Aerating lance assembly and aeration tank incorporating same NZ749043B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2016901714A AU2016901714A0 (en) 2016-05-09 Aeration tank including removable aerating lances
PCT/AU2017/000102 WO2017193156A1 (en) 2016-05-09 2017-05-09 Aerating lance assembly and aeration tank incorporating same

Publications (2)

Publication Number Publication Date
NZ749043A NZ749043A (en) 2024-05-31
NZ749043B2 true NZ749043B2 (en) 2024-09-03

Family

ID=

Similar Documents

Publication Publication Date Title
US5722458A (en) Valve for clearing air conditioning drain lines
DK167947B2 (en) Irrigation table irrigation valve and irrigation system
KR101690588B1 (en) Pipe cleaning method
US10751673B2 (en) Aerating lance assembly and aeration tank incorporating same
JP6454003B2 (en) Cleaning device using gas mixture liquid
ES2260602T3 (en) CLEANING AND LIQUID PROCEDURE FOR VENTILATION BODIES.
NZ749043B2 (en) Aerating lance assembly and aeration tank incorporating same
CN207061981U (en) A kind of anaerobism water distribution system for being easy to backwash
US20200206791A1 (en) Removable cleaning devices and methods of use for cleaning vertical stack plumbing systems
CN1312053C (en) Ammonia adding and mixig system for clear water pond
GB2352279B (en) Cleaning of beer lines
KR101936915B1 (en) Cleaning Apparatus Using Liquid Mixed with Gas
KR101658916B1 (en) Cleaning Apparatus Using Liquid Mixed with Gas
CN217972780U (en) Novel aeration device
US7264774B1 (en) Method and apparatus for sanitizing a drain
CN209081544U (en) A kind of microbial deodorizing device
CN202001717U (en) Novel valve
CN104263637B (en) A kind of screening installation of organic exhaust gas degradation bacteria
CN208667403U (en) Sewage-treatment plant
Hartvigsen Principles of cleaning and cip
WO1999054565A1 (en) A method and a device for automatic circulation in waste water tank
CN104925942A (en) Integrated sewage water treating terminal
CN105621840A (en) Pressure-difference-type green ecological septic tank and use method thereof
US9850652B2 (en) Septic line cleaning assistance device
KR20090003605U (en) Pipe washing system with cylindrical and cylindrical valve