CN1115304C - Continuous sewage treating process and system through intermittent aeration and by active sludge - Google Patents
Continuous sewage treating process and system through intermittent aeration and by active sludge Download PDFInfo
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- CN1115304C CN1115304C CN97116662A CN97116662A CN1115304C CN 1115304 C CN1115304 C CN 1115304C CN 97116662 A CN97116662 A CN 97116662A CN 97116662 A CN97116662 A CN 97116662A CN 1115304 C CN1115304 C CN 1115304C
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- reaction tank
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- intermittent aeration
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- 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 a sewage treatment technology and system by a continuous intermittent aeration sequence batch activated sludge method, particularly to a sewage treatment technology and system by a sequence batch activated sludge method, wherein the technology comprises the processes of water intake, continuous aeration, intermittent aeration, precipitation, water discharge, idleness, etc., i.e. first, raw sewage continuously enters a continuous aeration reaction tank, and is mixed with activated sludge in the reaction tank. After the mixture is continuously aerated or stirred, the mixture enters an intermittent aeration reaction tank to carry out intermittent aeration and precipitation. The technology has the advantages of stability, small rated air flow of a blower, and simple water intake device. The state of the intermittent aeration reaction tank can be arbitrarily regulated, which is favorable for removing organic matter difficult to degrade, nitrogen and phosphorus, and is particularly suitable for middle and small scale sewage treatment plants.
Description
Technical field
The present invention relates to a kind of sequencing batch active sludge sewage water treatment method.
Background technology
Activated sludge process is to utilize being sick of of certain micro-organisms in the active sludge, a kind of biological method that aerobic alternation procedure carries out sewage disposal, and its treatment process mainly contains two kinds of successive reaction formula and sequence batch (s.Sequencing batch active sludge also claims the intermittent aeration method, is a kind of sewage treatment process of exploitation already, and its reaction mechanism and decontamination mechanism are basic identical with successive reaction formula activated sludge process, but treatment process and successive reaction formula activated sludge process have very big difference.Each processing cycle of typical sequencing batch active sludge sewage treatment process roughly comprises into water, reaction, precipitation, water outlet and operation such as idle, and all in same intermittent aeration reaction tank, carry out, promptly at first make raw waste water enter the intermittent aeration reaction tank, and mix with active sludge in the pond, and carry out biochemical reactions such as denitrogenation dephosphorizing, then the muddy water mixed solution in the intermittent aeration reaction tank is carried out aeration or stirring, make mud-water separation by precipitation at last, supernatant after the separation is treat effluent, sedimentation mud is stirred or aeration, and behind the discharge excess sludge, begin next processing cycle again.Compare with successive reaction formula activated sludge process, the technology of sequencing batch active sludge is all greatly simplified.Intermittent aeration reaction tank collection aeration, be deposited in all over the body, saved preliminary sedimentation tank, second pond and returned sluge pump house in the successive reaction formula Wastewater Treated by Activated Sludge Process operation.Through the good oxidation stability of active sludge of extended aeration, do not need to carry out again nitration treatment, so technical process is fairly simple in the intermittent aeration reaction tank.The state of intermittent aeration reaction tank can be regulated arbitrarily, thereby helps removing the organism of difficult degradation.Just because of the above-mentioned unique advantage of sequencing batch active sludge, make sequencing batch active sludge become the sewage treatment that the world in recent years various countries generally adopt.Up to the present, existing hundreds of the sequencing batch active sludges in the whole world be that the sewage work of purpose is just in successful operation, it is the middle and small scale city domestic sewage processing of purpose that its scope of application is expanded to the dephosphorization denitrogenation by middle and small scale Industrial Wastewater Treatment already in the past, but, the sequencing batch active sludge sewage treatment process yet exists some that technical problem to be solved is arranged, at first, sequence batch (water inlet and intermittent aeration not only make the utilization ratio of intermittent aeration reaction tank reduce, and make the operation of entire treatment technology become stable inadequately, the nominal air delivery of the aeration blower of intermittent operation and power are also than higher, secondly, because raw waste water is that sequence batch (enters the intermittent aeration reaction tank, therefore need to install the order water inlet gate valve and the robot control system(RCS) of more complicated.Just because of these technical problems that waits to solve, make the extensive employing of sequencing batch active sludge sewage treatment process be subjected to certain restriction.
Summary of the invention
The objective of the invention is sequencing batch active sludge sewage water treatment method of the prior art is suitably improved, with stability that improves the treatment process operation and the water feed apparatus of simplifying treatment process.
In order to achieve the above object, technical solution of the present invention provides a kind of continuous intermittent aeration sequencing batch activated sludge sewage water treatment method, the operation of this treatment process includes into water, reaction, precipitation, water outlet and idle operation, at first make raw waste water enter the intermittent aeration reaction tank, and mix with active sludge in the pond, then muddy water mixed solution is carried out aeration or stirring, make mud-water separation by precipitation at last, supernatant after the separation is treat effluent, sedimentation mud is stirred or aeration, and behind the discharge excess sludge, begin the next cycle water inlet again, particularly before described intermittent aeration reaction tank, set up placed in-line with it continuous aeration reaction tank, raw waste water enter continuously that the continuous aeration reaction tank mixes with active sludge in the pond and continuous aeration after, enter the intermittent aeration reaction tank again and carry out intermittent aeration and precipitation, a part of mud after the sedimentation pumps into the continuous aeration reaction tank as returned sluge.
Described continuous aeration reaction tank and intermittent aeration reaction tank are for having the adjacent aeration tank, front and back of training wall between the two.
Effect of the present invention is to adopt this water feed apparatus that the entire treatment system has been played the waterpower proportionality action, improved the stability of system's operation significantly, the nominal air delivery of gas blower and rated output also can reduce thereupon, also no longer need complicated order water inlet gate valve and robot control system(RCS).Except that being specially adapted to middle and small scale sewage work, also can be applicable in the large-scale wastewater treatment plant of 100,000 ton per day scales.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
The present invention is described in detail to reach embodiment in conjunction with the accompanying drawings.
Sewage water treatment method of the present invention includes into water, reaction, precipitation, water outlet and idle operation, at first make raw waste water enter the intermittent aeration reaction tank, and mix with active sludge in the pond, then muddy water mixed solution is carried out aeration or stirring, make mud-water separation by precipitation at last, supernatant after the separation is treat effluent, sedimentation mud is stirred or aeration, and behind the discharge excess sludge, begin the next cycle water inlet again, particularly before described intermittent aeration reaction tank, set up placed in-line with it continuous aeration reaction tank, raw waste water enter continuously that the continuous aeration reaction tank mixes with active sludge in the pond and continuous aeration after, enter the intermittent aeration reaction tank again and carry out intermittent aeration and precipitation, a part of mud after the sedimentation pumps into the continuous aeration reaction tank as returned sluge.
Described continuous aeration reaction tank and intermittent aeration reaction tank are for having the adjacent aeration tank, front and back of training wall between the two.
As shown in Figure 1, processing method of the present invention is achieved in that and mainly comprises mutual placed in-line continuous aeration reaction tank and intermittent aeration reaction tank and former water feed apparatus treat effluent device and mud device.Continuous aeration reaction tank and intermittent aeration reaction tank are the main units of this technology, and master operations such as biochemical reaction, precipitation are all here carried out.For this reason, be separately installed with continuous aeration device and intermittent aeration device in continuous aeration reaction tank and the intermittent aeration reaction tank, sludge pump also be installed in the continuous aeration reaction tank and strain hydrophone.The series system of continuous aeration reaction tank and intermittent aeration reaction tank has multiple, but the ideal series system is no more than being provided with training wall in one reaction pool, and the front and back of training wall are respectively as continuous aeration reaction tank and intermittent aeration reaction tank.Because raw waste water is to enter the aerated reaction pond continuously, thereby the raw waste water water feed apparatus is fairly simple, needn't adopt complicated order water inlet gate valve and Controlling System thereof fully, as long as utilize common sump pump raw waste water can be pumped into the continuous aeration reaction tank through sewer pipeline and sedimentation basin and scale tank.The treat effluent device mainly comprises water pump and chlorination house, behind the treat effluent chlorination, by going out water pump and the water outlet pipeline is sent.The mud device mainly comprises storage basin and water extracter, and the excess sludge in the continuous aeration reaction tank utilizes sludge pump to send into storage basin and sends into water extracter again, makes mud cake after the dehydration and transports.
Technical process of the present invention comprises into water, continuous aeration, intermittent aeration, precipitation, water outlet and idle operation, promptly at first make original sewage enter the continuous aeration reaction tank continuously through water feed apparatus, and mix with active sludge in the pond and carry out continuous aeration, and then enter the intermittent aeration reaction tank continuously and carry out intermittent aeration and precipitation, supernatant liquor after the mud-water separation is treat effluent, utilize discharging device to send, a part of sedimentation mud in the intermittent aeration reaction tank pumps into the continuous aeration reaction tank as returned sluge, and excess sludge is discharged through the mud device.Idiographic flow is:
(1) water inlet: raw waste water continuously enters the continuous aeration reaction tank through the raw waste water water feed apparatus, and enters the intermittent aeration reaction tank continuously by training wall;
(2) continuous aeration: continuous aeration carries out in the continuous aeration reaction tank, and promptly raw waste water utilizes aerating apparatus that muddy water mixed solution is carried out continuous aeration when entering the continuous aeration reaction tank continuously;
(3) intermittent aeration: intermittent aeration carries out in the intermittent aeration reaction tank, after the muddy water mixed solution that carried out preliminary biochemical treatment in the continuous aeration reaction tank enters the intermittent aeration reaction tank, carries out aeration and the stirring of for some time again;
(4) precipitation: be deposited in the intermittent aeration reaction tank and carry out.After stopping aeration and stirring, the mud flco relies on gravitational settling and makes mud-water separation, supernatant liquor after the separation is disposes of sewage, part sedimentation sludge stream is handled the active sludge in cycle as next in the intermittent aeration reaction tank, another part sedimentation mud utilizes sludge pump to pump into the continuous aeration reaction tank as returned sluge, and excess sludge is discharged by the mud device;
(5) water outlet: when the water level in the intermittent aeration reaction tank reaches the design top water-level, the hydrophone treat effluent is strained in utilization, drain outside the pond and and send treatment system, when the water level of intermittent aeration reaction tank reaches the design lowest water level, stop to strain water by the treat effluent device.
(6) idle: as after straining water, before the next cycle aeration begins, can the intermittent aeration reaction tank to be left unused for some time, during this period of time can stir as required or aeration, be beneficial to keep the activity of mud according to the character of sewage.The discharging of excess sludge is generally carried out at lay-up period.
The present invention is because the waterpower proportionality action of continuous water inlet and continuous aeration, improved the stability of technology greatly, the nominal air delivery of aeration blower and rated output also can reduce thereupon, also no longer need complicated order water inlet gate valve, except that being specially adapted to middle and small scale sewage work, also can be applicable in the large-scale wastewater treatment plant of 100,000 ton per day scales.
Claims (2)
1, a kind of continuous intermittent aeration sequencing batch activated sludge sewage water treatment method, the operation of this treatment process has and comprises into water, reaction, precipitation, water outlet and idle, at first make raw waste water enter the intermittent aeration reaction tank, and mix with active sludge in the pond, then muddy water mixed solution is carried out aeration or stirring, make mud-water separation by precipitation at last, supernatant after the separation is treat effluent, sedimentation mud is stirred or aeration, and behind the discharge excess sludge, begin the next cycle water inlet again, it is characterized in that before described intermittent aeration reaction tank, setting up placed in-line with it continuous aeration reaction tank, raw waste water enter continuously that the continuous aeration reaction tank mixes with active sludge in the pond and continuous aeration after, enter the intermittent aeration reaction tank again and carry out intermittent aeration and precipitation, a part of mud after the sedimentation pumps into the continuous aeration reaction tank as returned sluge.
2, continuous intermittent aeration sequencing batch activated sludge sewage water treatment method according to claim 1 is characterized in that described continuous aeration reaction tank and intermittent aeration reaction tank are for having the adjacent aeration tank, front and back of training wall between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97116662A CN1115304C (en) | 1997-08-07 | 1997-08-07 | Continuous sewage treating process and system through intermittent aeration and by active sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97116662A CN1115304C (en) | 1997-08-07 | 1997-08-07 | Continuous sewage treating process and system through intermittent aeration and by active sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1208025A CN1208025A (en) | 1999-02-17 |
| CN1115304C true CN1115304C (en) | 2003-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97116662A Expired - Fee Related CN1115304C (en) | 1997-08-07 | 1997-08-07 | Continuous sewage treating process and system through intermittent aeration and by active sludge |
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| Country | Link |
|---|---|
| CN (1) | CN1115304C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441524C (en) * | 2006-12-22 | 2008-12-10 | 浦华控股有限公司 | Constant water level sequencing batch active sludge process and system for treating sewage |
| CN100460341C (en) * | 2007-06-21 | 2009-02-11 | 中国海洋大学 | Biological sewage-treating process |
| CN103648988B (en) * | 2011-03-16 | 2016-01-20 | 索尔维投资有限公司 | For the method for biological sewage treatment |
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1997
- 1997-08-07 CN CN97116662A patent/CN1115304C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1208025A (en) | 1999-02-17 |
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Applicant after: Tianjin City Design Inst. of Municipal Engineering Applicant after: Tianjin Water Industry Engineering Equipment Co., Ltd. Applicant after: Beijing Xiaoqing Environmental Protection Technology Co Applicant before: Tianjin Municipal Engineering Design Institute Applicant before: Australia AEI China project company Applicant before: Beijing Xiaoqing environmental technology company |
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