CN105645711A - Side-flow-type sludge in-situ reduction membrane-bioreactor system - Google Patents
Side-flow-type sludge in-situ reduction membrane-bioreactor system Download PDFInfo
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- CN105645711A CN105645711A CN201610010458.4A CN201610010458A CN105645711A CN 105645711 A CN105645711 A CN 105645711A CN 201610010458 A CN201610010458 A CN 201610010458A CN 105645711 A CN105645711 A CN 105645711A
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- bioreactor
- sludge
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- film
- decrement
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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- 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
- C02F2303/06—Sludge reduction, e.g. by lysis
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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
- Y02W10/20—Sludge processing
Abstract
The invention relates to a side-flow-type sludge in-situ reduction membrane-bioreactor system which comprises an anoxic tank, a membrane-bioreactor tank, an anaerobic sludge side-flow reduction tank, a digestive fluid reflux pump and a sludge reflux pump, wherein a stirrer and a water inlet pipe are arranged in the anoxic tank; a membrane component and an aeration pipe are arranged in the membrane-bioreactor tank; the aeration pipe is connected with an airometer; the airometer is connected with a blast blower; a water outlet pipe is also arranged in the membrane-bioreactor tank; the water outlet pipe is connected with a water outlet pump; the water outlet pump is connected with the membrane component; a stirrer is arranged in the anaerobic sludge side-flow reduction tank; the digestive fluid reflux pump is respectively connected with the bottoms of the membrane-bioreactor tank and the anoxic tank; and the sludge reflux pump is respectively connected with the bottoms of the anaerobic sludge side-flow reduction unit and the anoxic tank. The anaerobic sludge side-flow reduction tank is arranged in the membrane-bioreactor reflux pipeline to constitute an integrated combination technique. The system has the advantages of stable effluent water quality, small occupied area and favorable sludge reduction effect, and is convenient for operation and management.
Description
Technical field
The invention belongs to water treatment field, it relates to a kind of sewage disposal technology, specifically a kind of lateral flow type sludge in-situ decrement film-bioreactor system.
Background technology
Excess sludge is one of principal element of puzzlement activated sludge process dirty water living creature processing technique. Particularly along with the quick increase of sewage work's quantity in recent years, sludge handling problem becomes the big difficult problem that sewage work faces. Specific resistance to filtration technology can be divided into end-o f-pipe-control to dispose and sludge process Decrement Technique. Traditional end-o f-pipe-control disposal technology comprises the links such as sludge condensation, stable, dehydration and ultimate disposal, its investment and working cost are huge, accounting for the 25%��65% of the investment of whole sewage work and working cost, oneself becomes the heavy financial burden of municipal sewage treatment factory. And, no matter it is landfill or burning, all experience sanitary landifll and the public support a difficult problem, also there is secondary pollution problem simultaneously. Therefore, outlet is disposed in the process fundamentally solving excess sludge has become great environmental problem urgently to be resolved hurrily in China's urban development process, the focal issue that Ye Shi world today environmental protection industry is paid close attention to.
In development process, progressively recognize that realizing mud decrement in sewage treatment process is better than end treatment technology, it is the best approach that solution mud discharges in a large number. The output solving mud on source is on the basis of existing activated sludge sewage disposal process, by improving or research and develop new sewage treatment process, under ensureing that sewage disposal reaches the prerequisite that emission standard requires, reduces the quantity discharged of excess sludge. Sludge process Decrement Technique mainly comprises physics, chemistry and the means such as biological. Mud is mainly oxidized to solvability biodegradable organic by ultrasonic, the physical chemistry means such as ozone, dioxide peroxide, potassium ferrate, makes carbon source be able to recycle, namely utilizes microorganism lysate to carry out recessive growth, and then realizes mud decrement. Biological sludge process Decrement Technique mainly comprises aerobic-precipitation-anaerobic technique, microfauna prey, acidication pretreatment technology, adds zymin or functional microbial etc. Wherein, one of technology of application that the process quilt carrying out mud decrement by arranging anaerobic sludge side stream decrement unit is considered as being most likely in sewage work.
But, owing to biological sludge process Decrement Technique needs longer sludge retention time usually, this very easily causes mud to accumulate corruption in systems in which, if adopting traditional second pond solid-liquid separation method, is easy to the problem occurring that water outlet concentration of suspension significantly rises.
Summary of the invention
For above-mentioned technical problem of the prior art, the present invention provides a kind of lateral flow type sludge in-situ decrement film-bioreactor system, and this kind of described lateral flow type sludge in-situ decrement film-bioreactor system solves simple employing sludge process Decrement Technique in prior art to be needed longer sludge retention time, easily cause mud to accumulate the technical problem of corruption in systems in which.
The present invention provides a kind of lateral flow type sludge in-situ decrement film-bioreactor system, comprise an anoxic pond, also comprise a film-bioreactor pond, stream decrement pond, an anaerobic sludge side, a Digestive system reflux pump and a sludge reflux pump, described anoxic pond is provided with first agitator and a water inlet pipe, described film-bioreactor pond is provided with membrane module, aeration tube, described aeration tube and an air flowmeter connect, described air flowmeter and a gas blower connect, described film-bioreactor pond is also provided with a rising pipe, described rising pipe and one go out water pump and connect, described goes out water pump and the connection of described membrane module, described anaerobic sludge side stream decrement unit is provided with the 2nd agitator, one end of described Digestive system reflux pump and the bottom in described film-bioreactor pond connect, other one end of described Digestive system reflux pump and the bottom of described anoxic pond connect, the bottom in one end of described sludge reflux pump and stream decrement pond, described anaerobic sludge side connects, other one end of described sludge reflux pump and the bottom of described anoxic pond connect, and the top of described anoxic pond and the top in described film-bioreactor pond are by the first pipeline connection, the top in the top in described film-bioreactor pond and stream decrement pond, described anaerobic sludge side is by the 2nd pipeline connection.
Further, described water pump also with one the water flow meter that goes out connects.
Further, described water pump also with one pressure warning unit that goes out connects.
The Sewage treatment systems that combines with film-bioreactor of decrement unit and technique a kind of are flowed in anaerobic sludge side by the present invention, realize sludge in-situ decrement under the prerequisite that pollutent is efficiently removed. The present invention by by water inlet pipe by sewage introduce described in anoxic pond, described anoxic pond arranges agitator, utilizes water-inlet carbon source by the nitrate reduction of backflow for nitrogen realizes denitrogenation. Aeration tube is laid bottom described film-bioreactor pond, the good oxygen condition in film-bioreactor pond is maintained and the accumulation of controlling diaphragm surface contaminant by aeration, realize aerobic degradation and the Ammonia Nitrification of organism, described film-bioreactor pond arranges membrane module, by go out water pump connect described in membrane module water outlet pumped film-bioreactor pond and indirectly controls flooding velocity. Described film-bioreactor pond arranges two-way bypass duct, and the first bypass duct is connected with described anoxic pond, and the first described bypass duct is provided with a nitrification liquid reflux pump; 2nd bypass duct flows decrement pond with described anaerobic sludge side and is connected, and described anaerobic sludge side stream decrement pond outlet arranges a sludge reflux pump and is connected with anoxic pond. Described stream decrement pond, anaerobic sludge side arranges to stir and maintains anaerobic state. There is each quasi-microorganisms such as acidication bacterium, slow growth bacterium, predatism microorganism in stream decrement pond in anaerobic sludge side, by process implementation mud decrements such as the molten born of the same parents of microorganism, particulate organic matter hydrolysis, predations. And the continuous circulation that mud flows between the anaerobic state of decrement pond at the good oxygen condition in film-bioreactor pond and anaerobic sludge side also can utilize Microbe synthesis and katabolism uncoupling to realize mud decrement.
The invention has the beneficial effects as follows:
(1) the invention belongs to the technique that sludge process Decrement Technique combines with film-bioreactor, adopt film-bioreactor to replace traditional biological process technology end second pond, reduce water outlet concentration of suspension, reduce and take up an area;
(2) the present invention utilizes the efficient crown_interception of film that microorganism is all trapped in system, this part mud is introduced in stream decrement pond, anaerobic sludge side, create the microenvironment being suitable for mud decrement, by efficient decrements of process implementation mud such as the molten born of the same parents of microorganism, particulate matter hydrolysis, microorganism predation and metabolism uncoupling, it is intensified anti-nitrated that the dissolved organic matter that the molten born of the same parents of mud produce can be used as carbon source;
(3) stream reduction coupling film-bioreactor coupling technique in anaerobic sludge side is except by except integrated for both process advantages, both combinations also contribute to the high efficiency separation effect by film effectively to extend sludge age, improve the stability of effluent quality, flow in anaerobic sludge side and the basis of decrement promotes mud decrement effect further.
(4) compared to traditional aerobic-precipitation-anaerobic technique needs stream decrement pond, newly-built anaerobic sludge side, anaerobic sludge side stream reduction coupling film-bioreactor coupling technique is owing to adopting membrane sepn to instead of the solid-liquid separation of second pond, can directly by original Modification of Secondary Settling Tank be anaerobic sludge side stream decrement unit, be easier in sewage work's upgrading and apply.
The present invention compares with prior art, and its technical progress is significant. Membrane separation technique is combined by the present invention with sludge organism decrement process, by arranging anaerobic sludge side stream decrement unit in film-bioreactor, the advantage of effective binding film isolation technique and sludge decrement process, this kind of integrated form combination process has the advantages such as stable effluent quality, floor space is little, operational management is convenient, mud decrement is effective.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's a kind of lateral flow type sludge in-situ decrement film-bioreactor system. 1 be wherein anoxic pond, 2 be film-bioreactor pond, 3 stream decrement ponds, 4, anaerobic sludge sides be the first agitator, 5 be gas blower, 6 be air flowmeter, 7 be aeration tube, 8 be membrane module, 9 be pressure warning unit, 10 be Digestive system reflux pump for go out water pump, 11 be the 2nd agitator, 12,13 be sludge reflux pump, 14 under meter.
Embodiment
Below by specific embodiment and by reference to the accompanying drawings the present invention is set forth further, but do not limit the present invention.
Embodiment 1
As shown in Figure 1, a kind of lateral flow type sludge in-situ decrement film-bioreactor system, comprises anoxic pond 1, film-bioreactor pond 2 and stream decrement pond 3, anaerobic sludge side successively. When native system uses, waste water is through certain pre-treatment, and after comprising the process such as adjustment, heavy sand, gravity flow enters anaerobic sludge side stream reduction coupling film-bioreactor system, controls flooding velocity by going out water pump 10. Anoxic pond 1 residence time is 2h, and anoxic pond 1 is provided with the first agitator 4, utilizes water-inlet carbon source by the nitrate reduction of backflow for nitrogen realizes denitrogenation by stirring action. The water outlet of anoxic pond 1 enters in the film-bioreactor pond 2 that the residence time is 6h, the aerobic degradation of the nitrated of ammonia nitrogen and organism is realized under aerobic conditions, the oxygen in film-bioreactor pond 2 is supplied by aeration tube 7 by gas blower 5, and to control film-bioreactor pond dissolved oxygen concentration by air flowmeter 6 be 2-4mg/L; Arranging membrane module 8 in film-bioreactor pond, by going out the suction function water outlet of water pump 10, carry out pressure monitoring by tensimeter 9, water flow is monitored by under meter 14, and mud is then retained in film-bioreactor pond 2.
Mud in film-bioreactor pond 2 divides two portions to reflux, and the first via makes sludge reflux to anoxic pond 1 by nitrification liquid reflux pump 12, and nitrification liquid quantity of reflux is about the 50%-140% of total water flow; 2nd tunnel gravity flow enters stream decrement pond 3, anaerobic sludge side, it is 6-60h that mud flows the residence time in decrement pond 3 in anaerobic sludge side, the mud that returned sluge flows in decrement pond 3 with anaerobic sludge side mixes under the effect of the 2nd agitator 11, realizes mud decrement by effects such as the molten born of the same parents of microorganism, particulate matter hydrolysis, microorganism predation, metabolism uncoupling. Entering in anoxic pond 1 by sludge reflux pump 13 pump again after the molten born of the same parents' decrement of mud of stream decrement pond, anaerobic sludge side, sludge reflux amount is about the 10-100% of total water flow.
Embodiment 2
The 3 cover anaerobic sludge side stream reduction coupling film-bioreactor systems that arrange are run with return sludge ratio 20%, 50% and 100% respectively, arranging a set of anoxic/aerobic film-bioreactor system in addition and carry out parallel contrast, 4 cover systems were by above operating parameter steady running 150 days. Influent COD, ammonia nitrogen and total average nitrogen concentration are about 108.9,21.11 and 28.84mg/L, and film-bioreactor pond and stream decrement pond, anaerobic sludge side sludge concentration are 6g/L.
In the steady running process of 150d, sludge sidestream than be 20%, 50% and 100% the average effluent COD of anaerobic sludge side stream reduction coupling film-bioreactor be 20.7,21.3 and 18.9mg/L, close to the 19.6mg/L of anoxic/aerobic film-bioreactor water outlet; The water outlet ammonia nitrogen mean value that side stream flows reduction coupling film-bioreactor than the anaerobic sludge side being 20%, 50% and 100% is 0.33,0.35 and 0.37mg/L, close to the 0.31mg/L of anoxic/aerobic film-bioreactor water outlet; Side stream is 20.31,20.16 and 19.14mg/L than the total nitrogen mean value of water outlet that reduction coupling film-bioreactor is flowed in the anaerobic sludge side being 20%, 50% and 100%, is significantly lower than the 24.99mg/L of anoxic/aerobic film-bioreactor water outlet.
Compared with anoxic/aerobic film-bioreactor, side stream is respectively 6.45%, 25.75% and 44.55% than the anaerobic sludge side stream reduction coupling film-bioreactor coupling technique mud decrement rate being 20%, 50% and 100%. Obviously, stream reduction coupling film-bioreactor technique in anaerobic sludge side is when effluent quality is better than anoxic/aerobic film-bioreactor, it is achieved that the remarkable decrement of the original position of mud.
The above is only the citing of embodiments of the present invention; it is noted that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also making some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (3)
1. a lateral flow type sludge in-situ decrement film-bioreactor system, comprise an anoxic pond, it is characterized in that: also comprise a film-bioreactor pond, stream decrement pond, an anaerobic sludge side, a Digestive system reflux pump and a sludge reflux pump, described anoxic pond is provided with first agitator and a water inlet pipe, described film-bioreactor pond is provided with membrane module, aeration tube, described aeration tube and an air flowmeter connect, described air flowmeter and a gas blower connect, described film-bioreactor pond is also provided with a rising pipe, described rising pipe and one go out water pump and connect, described goes out water pump and the connection of described membrane module, described anaerobic sludge side stream decrement unit is provided with the 2nd agitator, one end of described Digestive system reflux pump and the bottom in described film-bioreactor pond connect, other one end of described Digestive system reflux pump and the bottom of described anoxic pond connect, the bottom of one end of described sludge reflux pump and described anaerobic sludge side stream decrement unit connects, other one end of described sludge reflux pump and the bottom of described anoxic pond connect, and the top of described anoxic pond and the top in described film-bioreactor pond are by the first pipeline connection, the top of the top in described film-bioreactor pond and described anaerobic sludge side stream decrement unit is by the 2nd pipeline connection.
2. a kind of lateral flow type sludge in-situ decrement film-bioreactor system according to claim 1, it is characterised in that: described water pump also with one the water flow meter that goes out connects.
3. a kind of lateral flow type sludge in-situ decrement film-bioreactor system according to claim 1, it is characterised in that: described water pump also with one pressure warning unit that goes out connects.
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| CN201610010458.4A CN105645711A (en) | 2016-01-08 | 2016-01-08 | Side-flow-type sludge in-situ reduction membrane-bioreactor system |
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| CN201610010458.4A CN105645711A (en) | 2016-01-08 | 2016-01-08 | Side-flow-type sludge in-situ reduction membrane-bioreactor system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896629A (en) * | 2019-03-18 | 2019-06-18 | 四川轻化工大学 | A kind of method and device for strengthening AOMBR process sludge sludge reduction onsite |
| CN110963648A (en) * | 2019-12-27 | 2020-04-07 | 上海电力大学 | Sewage treatment device and process for high-sludge-concentration sludge side-stream in-situ reduction and carbon-nitrogen ratio improvement |
| CN112174317A (en) * | 2020-07-20 | 2021-01-05 | 北京工业大学 | Device and method for side flow enhanced biological phosphorus removal process based on carbon source development in excess sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896629A (en) * | 2019-03-18 | 2019-06-18 | 四川轻化工大学 | A kind of method and device for strengthening AOMBR process sludge sludge reduction onsite |
| CN110963648A (en) * | 2019-12-27 | 2020-04-07 | 上海电力大学 | Sewage treatment device and process for high-sludge-concentration sludge side-stream in-situ reduction and carbon-nitrogen ratio improvement |
| CN112174317A (en) * | 2020-07-20 | 2021-01-05 | 北京工业大学 | Device and method for side flow enhanced biological phosphorus removal process based on carbon source development in excess sludge |
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Application publication date: 20160608 |