CN104326627A - Dynamic membrane biogas slurry treatment device and dynamic membrane biogas slurry treatment method - Google Patents
Dynamic membrane biogas slurry treatment device and dynamic membrane biogas slurry treatment method Download PDFInfo
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- CN104326627A CN104326627A CN201410598819.2A CN201410598819A CN104326627A CN 104326627 A CN104326627 A CN 104326627A CN 201410598819 A CN201410598819 A CN 201410598819A CN 104326627 A CN104326627 A CN 104326627A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a dynamic membrane biogas slurry treatment device and a dynamic membrane biogas slurry treatment method, relating to biogas slurry treatment. The treatment device is provided with a water inlet pump, an adjusting tank, a coagulating sedimentation tank, a conveying pump, a circulating pump, an anaerobic tank, an aerobic tank, an aeration disc and an aerator. Raw water passes through the adjusting tank and the coagulating sedimentation tank and enters the anaerobic tank and the aerobic tank; wastewater in the anaerobic tank is pumped into the aerobic tank by a constant-flow pump through dynamic membrane modules; meanwhile, wastewater in the aerobic tank is pumped back to the anaerobic tank; when the membrane modules are blocked, the conveying direction of the wastewater is changed and a previous direction that the wastewater flows into the inner parts of the membrane modules from the outer parts of the membrane modules is changed into a direction that the wastewater flows into the outer parts of the membrane modules from the inner parts of the membrane modules; the wastewater is backwashed so that the flux of the membrane modules keeps a normal level; the flow and the backwashing time of the constant-flow pump are adjusted so that the backwashing flow is adjusted and the membrane pollution is reduced; the plurality of membrane modules are arranged in the anaerobic tank and the aerobic tank; and the specific membrane module can be independently backwashed and all the membrane modules can be backwashed.
Description
Technical field
The present invention relates to the liquid process of a kind of natural pond, especially relate to a kind of Dynamic Membrane natural pond liquid processing device and treatment process thereof.
Background technology
Biogas engineering is as the important channel of intensive livestock and poultry farms ight soil and aquaculture wastewater process and recycling, and development in recent years rapidly.From 2004, Chinese big-and-middle-sized biogas engineering quantity is often average annual to be increased fast with more than 40% speed, and within 2008, speedup reaches 82.19% especially.Livestock and poultry farms in scale build big-and-middle-sized biogas engineering ratio also by 2004 8.56% rise to 2008 26.82%.End 2009, China builds and the big-and-middle-sized biogas engineering run has reached 3800, can process several hundred million cubic metres of animal excrements and sewage of farm every year.
Anaerobic digestion methane production technology is a kind of effective poultry excrement and urine disposal and energy utilization method, the organism that can effectively degrade in ight soil, and produce biogas clean energy, solve the pollution problem of agricultural wastes to a certain extent, and promote its recycle.But biogas engineering produces a large amount of anaerobic digestion things (natural pond slag, natural pond liquid) while running, particularly natural pond liquid, because its amount is large and the Pollutant levels such as ammonia nitrogen are high, direct discharge does not reach environmental standard, and cropland application exists the problems such as transportation cost is high, storage floor space is large, fertilizer efficiency is not enough.And natural pond liquid has carbon-nitrogen ratio imbalance, organism, nitrogen, phosphorus concentration are higher, NH
4+the feature that-N/TN ratio is high, adopts the direct treatment effect of conventional biochemical method not good.
Although carried out improvement and bring new ideas to natural pond liquid biological treatment, the example that MBR technique is applied in the liquid process of natural pond is less.Cause the reason of this present situation mainly: the high cost of membrane module, operational process power consumption is too high, cause that working cost is very high, suspended contaminant is trapped under the effect of the pressure or is adsorbed on film surface in the operational process of film, cause the pollution of film, the attenuation problem of effluent flux is difficult to solve.Therefore, need to research and develop novel membrane bioreactor for these shortcomings, solve the problem on the former advantageous basis of reservation to make it as far as possible.In common membrane filtration processes, the colloid in solution and suspended particle are trapped or are adsorbed on film surface under the effect of filter pressure, cause the decline of membrane flux, and this phenomenon is called fouling membrane.But from another one angle, the pollution layer on film surface enhances the interception capacity of film, making microfiltration membrane can retain virus even small organic molecule, just looks like turn increase a skim on original film.Because this tunic is formed in filtration procedure, its composition and thickness all may in time and the change of the condition such as bio-reactor operation and changing, therefore some investigators are referred to as Dynamic Membrane or secondary film.Correspondingly, this bio-reactor is called bioreactor of dynamic membrane.The appearance of Dynamic Membrane solves two hang-ups of above-mentioned MBR well because due to porous counterdie and precoating paint selection extensively and cheap and easy to get, the cost of Dynamic Membrane is had than traditional MBR and very significantly declines.In addition, because the flux of porous counterdie and membrane matrix is inherently very large, precoating or spontaneous again again after the Dynamic Membrane on membrane matrix surface can also being removed when fouling membrane is serious, thus controlling diaphragm pollutes effectively.And Dynamic Membrane also has other advantages such as equipment is simple, processing ease, treatment effect are better.Therefore, Dynamic membrane causes research and the concern of people widely.
Chinese patent CN203625112U open integrated film bio-reactor natural pond liquid treatment facility, comprise aeration zone that natural pond liquid pool is connected with natural pond liquid pool and the discharging device that film reaction district is communicated with film reaction district and Aeration fan, be located at movable cleaning device between film reaction district and discharging device, described Aeration fan is communicated with aeration zone, film reaction district respectively by aeration tube, and described discharging device is communicated with film reaction district by clear water pipe.
Summary of the invention
To the object of the invention is for natural pond liquid, due to COD, problem that the high intractability caused of ammonia nitrogen concentration is large, to provide and can efficiently process natural pond liquid, and effectively solve a kind of Dynamic Membrane natural pond liquid processing device and the treatment process thereof of membrane pollution problem in the liquid film treating processes of natural pond.
A kind of Dynamic Membrane natural pond liquid processing device is provided with intake pump, equalizing tank, coagulative precipitation tank, transferpump, recycle pump, anaerobic pond, Aerobic Pond, aeration plate, aerator;
The external former water of water-in of described intake pump, the water outlet of intake pump connects the water-in of equalizing tank, the water outlet of equalizing tank connects the water-in of coagulative precipitation tank, the water outlet of coagulative precipitation tank connects the water-in of anaerobic pond through transferpump, the bottom of coagulative precipitation tank is provided with the 1st mud discharging mouth, the mud of the 1st mud discharging mouth discharge coagulative precipitation tank precipitation, the water outlet of anaerobic pond connects the water-in of Aerobic Pond, the bottom of anaerobic pond is provided with the 2nd mud discharging mouth, the mud of the 2nd mud discharging mouth discharge anaerobic pond precipitation, the wastewater outlet of Aerobic Pond takes back the waste water reclamation mouth of anaerobic pond through recycle pump, the water outlet of Aerobic Pond discharges discharge water, the bottom of Aerobic Pond is provided with the 3rd mud discharging mouth, the mud of the 3rd mud discharging mouth discharge Aerobic Pond precipitation, aeration plate is located at the bottom of Aerobic Pond, and the inlet mouth of aeration plate connects aerator.
A kind of Dynamic Membrane natural pond liquid processing method, comprises the following steps:
1) former water is successively after equalizing tank, coagulative precipitation tank, enters anaerobic pond and Aerobic Pond;
2) membrane module be made up of industrial filter cloth is placed in anaerobic pond and Aerobic Pond, by constant flow pump, the waste water in anaerobic pond is evacuated in Aerobic Pond by the water outlet of dynamic film component, waste water constant flow pump in Aerobic Pond is drawn back to anaerobic pond by the water outlet of dynamic film component simultaneously, to form the process of the continuous circulation simultaneously over time and space of waste water in anaerobic pond and Aerobic Pond, complete the treating processes to waste water;
3) when blocking occurs membrane module, by the switching of respective valves, waste water throughput direction is changed, membrane module inside is flowed into from membrane module outside by original, change into and flow to membrane module outside by membrane module inside, carry out back flushing, make membrane module flux maintain normal level;
4) by regulating flow and the backwashing time of constant flow pump, regulating back flushing flow, reducing fouling membrane, ensure best backwash effect;
5) anaerobic pond and the multiple membrane module of the interior distribution of Aerobic Pond, can carry out back flushing to certain films assembly separately, also can carry out back flushing to whole membrane module.
In step 1) in, can be provided with heating and whipping appts in described anaerobic pond, the speed of stirring can be 50 ~ 180r/min, and control temperature can be 10 ~ 55 DEG C; Can be provided with in described Aerobic Pond and add aeration and flow rate control device, control aeration rate is 0.1 ~ 25L/min, and dissolved oxygen DO is 1.0 ~ 6.0mg/L.
In step 2) in, described industrial filter cloth can be selected from least one in terylene short fiber, terylene long fibre, polyvinyl, polypropylene fibre etc., and the aperture of industrial filter cloth can be 10 ~ 1000 μm, preferably 50 ~ 300 μm; The flow velocity of described continuous circulation can be 5 ~ 1000mL/min.
In step 4) in, described back flushing flow can be 5 ~ 1000L/min, and backwashing time can be 0.1 ~ 100min.
Compared with traditional membrane module backwashing technology, back-flushing method of the present invention is without the need to discharging wash-down water separately, and backwash effect is good, equipment and construction investment few, minimizing fouling membrane, back washing strength can control flexibly, solve the difficult problem that in the liquid film treating processes of natural pond, membrane module easily pollutes well.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of Dynamic Membrane natural pond of the present invention liquid processing device embodiment.
Embodiment
See Fig. 1, a kind of Dynamic Membrane natural pond liquid processing device embodiment is provided with intake pump 1, equalizing tank 2, coagulative precipitation tank 3, transferpump 4, recycle pump 5, anaerobic pond 61, Aerobic Pond 62, aeration plate 7, aerator 8.
The external former water of water-in of described intake pump 1, the water outlet of intake pump 1 connects the water-in of equalizing tank 2, the water outlet of equalizing tank 2 connects the water-in of coagulative precipitation tank 3, the water outlet of coagulative precipitation tank 3 connects the water-in of anaerobic pond 61 through transferpump 4, the bottom of coagulative precipitation tank 3 is provided with the 1st mud discharging mouth 91, 1st mud discharging mouth 91 discharges the mud that coagulative precipitation tank 3 precipitates, the water outlet of anaerobic pond 61 connects the water-in of Aerobic Pond 62, the bottom of anaerobic pond 61 is provided with the 2nd mud discharging mouth 92, 2nd mud discharging mouth 92 discharges the mud that anaerobic pond 61 precipitates, the wastewater outlet of Aerobic Pond 62 takes back the waste water reclamation mouth 611 of anaerobic pond 61 through recycle pump 5, the water outlet 10 of Aerobic Pond 62 discharges discharge water, the bottom of Aerobic Pond 62 is provided with the 3rd mud discharging mouth 93, 3rd mud discharging mouth 93 discharges the mud that Aerobic Pond 62 precipitates, aeration plate 7 is located at the bottom of Aerobic Pond 62, and the inlet mouth of aeration plate 7 connects aerator 8.
Below provide the concrete steps of Dynamic Membrane natural pond liquid processing method:
1) former water is successively after equalizing tank, coagulative precipitation tank, enters anaerobic pond and Aerobic Pond;
2) membrane module be made up of industrial filter cloth is placed in anaerobic pond and Aerobic Pond, by constant flow pump, the waste water in anaerobic pond is evacuated in Aerobic Pond by the water outlet of dynamic film component, waste water constant flow pump in Aerobic Pond is drawn back to anaerobic pond by the water outlet of dynamic film component simultaneously, to form the process of the continuous circulation simultaneously over time and space of waste water in anaerobic pond and Aerobic Pond, complete the treating processes to waste water; Described industrial filter cloth can be selected from least one in terylene short fiber, terylene long fibre, polyvinyl, polypropylene fibre etc., and the aperture of industrial filter cloth can be 10 ~ 300um.
3) when blocking occurs membrane module, by the switching of respective valves, waste water throughput direction is changed, membrane module inside is flowed into from membrane module outside by original, change into and flow to membrane module outside by membrane module inside, thus reach the object of back flushing, make membrane module flux maintain normal level;
4) by regulating flow and the backwashing time of constant flow pump, the object of flexible back washing strength can be reached, reducing fouling membrane, ensure best backwash effect;
5) anaerobic pond and the multiple membrane module of the interior distribution of Aerobic Pond, can carry out back flushing to certain films assembly separately, also can carry out back flushing to whole membrane module.
Below provide specific embodiment.
Embodiment 1 ~ 4
According to waste water quality and film chocking-up degree, select suitable back flushing flow and backwashing time, thus obtain best backwash effect.
Embodiment 1 ~ 4 result is in table 1.
The liquid Dynamic Membrane process of table 1 natural pond and backwash effect
The present invention can efficiently process natural pond liquid, and effectively solves the membrane pollution problem in the liquid Dynamic Membrane treating processes of natural pond.Compared with traditional membrane module backwashing technology, back-flushing method of the present invention is without the need to discharging wash-down water separately, and backwash effect is good, equipment and construction investment few, back washing strength can control flexibly, solves the problem that in the liquid film treating processes of natural pond, membrane module easily pollutes well.
Claims (9)
1. a Dynamic Membrane natural pond liquid processing device, is characterized in that being provided with intake pump, equalizing tank, coagulative precipitation tank, transferpump, recycle pump, anaerobic pond, Aerobic Pond, aeration plate, aerator;
The external former water of water-in of described intake pump, the water outlet of intake pump connects the water-in of equalizing tank, the water outlet of equalizing tank connects the water-in of coagulative precipitation tank, the water outlet of coagulative precipitation tank connects the water-in of anaerobic pond through transferpump, the bottom of coagulative precipitation tank is provided with the 1st mud discharging mouth, the mud of the 1st mud discharging mouth discharge coagulative precipitation tank precipitation, the water outlet of anaerobic pond connects the water-in of Aerobic Pond, the bottom of anaerobic pond is provided with the 2nd mud discharging mouth, the mud of the 2nd mud discharging mouth discharge anaerobic pond precipitation, the wastewater outlet of Aerobic Pond takes back the waste water reclamation mouth of anaerobic pond through recycle pump, the water outlet of Aerobic Pond discharges discharge water, the bottom of Aerobic Pond is provided with the 3rd mud discharging mouth, the mud of the 3rd mud discharging mouth discharge Aerobic Pond precipitation, aeration plate is located at the bottom of Aerobic Pond, and the inlet mouth of aeration plate connects aerator.
2. a Dynamic Membrane natural pond liquid processing method, is characterized in that adopting Dynamic Membrane natural pond liquid processing device as claimed in claim 1, said method comprising the steps of:
1) former water is successively after equalizing tank, coagulative precipitation tank, enters anaerobic pond and Aerobic Pond;
2) membrane module be made up of industrial filter cloth is placed in anaerobic pond and Aerobic Pond, by constant flow pump, the waste water in anaerobic pond is evacuated in Aerobic Pond by the water outlet of dynamic film component, waste water constant flow pump in Aerobic Pond is drawn back to anaerobic pond by the water outlet of dynamic film component simultaneously, to form the process of the continuous circulation simultaneously over time and space of waste water in anaerobic pond and Aerobic Pond, complete the treating processes to waste water;
3) when blocking occurs membrane module, by the switching of respective valves, waste water throughput direction is changed, membrane module inside is flowed into from membrane module outside by original, change into and flow to membrane module outside by membrane module inside, carry out back flushing, make membrane module flux maintain normal level;
4) by regulating flow and the backwashing time of constant flow pump, regulating back flushing flow, reducing fouling membrane, ensure best backwash effect;
5) anaerobic pond and the multiple membrane module of the interior distribution of Aerobic Pond, can carry out back flushing to certain films assembly separately, also can carry out back flushing to whole membrane module.
3. a kind of Dynamic Membrane natural pond liquid processing method as claimed in claim 2, is characterized in that in step 1) in, be provided with heating and whipping appts in described anaerobic pond, the speed of stirring is 50 ~ 180r/min, and control temperature is 10 ~ 55 DEG C.
4. a kind of Dynamic Membrane natural pond liquid processing method as claimed in claim 2, is characterized in that in step 1) in, be provided with in described Aerobic Pond and add aeration and flow rate control device, control aeration rate is 0.1 ~ 25L/min, and dissolved oxygen DO is 1.0 ~ 6.0mg/L.
5. a kind of Dynamic Membrane natural pond liquid processing method as claimed in claim 2, is characterized in that in step 2) in, described industrial filter cloth is selected from least one in terylene short fiber, the long fibre of terylene, polyvinyl, polypropylene fibre.
6. a kind of Dynamic Membrane natural pond liquid processing method as claimed in claim 2, is characterized in that in step 2) in, the aperture of described industrial filter cloth is 10 ~ 1000 μm.
7. a kind of Dynamic Membrane natural pond liquid processing method as claimed in claim 6, is characterized in that the aperture of described industrial filter cloth is 50 ~ 300 μm.
8. a kind of Dynamic Membrane natural pond liquid processing method as claimed in claim 2, is characterized in that in step 2) in, the flow velocity of described continuous circulation is 5 ~ 1000mL/min.
9. a kind of Dynamic Membrane natural pond liquid processing method as claimed in claim 2, is characterized in that in step 4) in, described back flushing flow is 5 ~ 1000L/min, and backwashing time is 0.1 ~ 100min.
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| CN201410598819.2A CN104326627A (en) | 2014-10-30 | 2014-10-30 | Dynamic membrane biogas slurry treatment device and dynamic membrane biogas slurry treatment method |
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| CN201410598819.2A CN104326627A (en) | 2014-10-30 | 2014-10-30 | Dynamic membrane biogas slurry treatment device and dynamic membrane biogas slurry treatment method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186309A (en) * | 2016-09-04 | 2016-12-07 | 谢永宁 | A kind of polyformaldehyde wastewater treatment equipment |
| CN106865806A (en) * | 2017-04-26 | 2017-06-20 | 黑龙江省能源环境研究院 | Cut down and reclaim nitrogen phosphorus device and recovery method in biogas slurry in removable scene |
| CN108558003A (en) * | 2018-01-26 | 2018-09-21 | 郑州轻工业学院 | A kind of method and device removing multiple pollutant in antibiotic waste water using two-stage MBR collaborations |
| CN108947113A (en) * | 2018-07-09 | 2018-12-07 | 江苏自强环保科技有限公司 | A kind of sewage disposal device |
| CN111925066A (en) * | 2020-08-20 | 2020-11-13 | 重庆大学 | Split type continuous operation micro-grid dynamic membrane bioreactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633412A (en) * | 2012-05-04 | 2012-08-15 | 厦门大学 | Dynamic membrane anaerobic-aerobic circular integration sewage treatment method |
| CN104071952A (en) * | 2014-07-15 | 2014-10-01 | 厦门大学 | Biochemical film treating method for cultivation wastewater |
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2014
- 2014-10-30 CN CN201410598819.2A patent/CN104326627A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633412A (en) * | 2012-05-04 | 2012-08-15 | 厦门大学 | Dynamic membrane anaerobic-aerobic circular integration sewage treatment method |
| CN104071952A (en) * | 2014-07-15 | 2014-10-01 | 厦门大学 | Biochemical film treating method for cultivation wastewater |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186309A (en) * | 2016-09-04 | 2016-12-07 | 谢永宁 | A kind of polyformaldehyde wastewater treatment equipment |
| CN106865806A (en) * | 2017-04-26 | 2017-06-20 | 黑龙江省能源环境研究院 | Cut down and reclaim nitrogen phosphorus device and recovery method in biogas slurry in removable scene |
| CN108558003A (en) * | 2018-01-26 | 2018-09-21 | 郑州轻工业学院 | A kind of method and device removing multiple pollutant in antibiotic waste water using two-stage MBR collaborations |
| CN108947113A (en) * | 2018-07-09 | 2018-12-07 | 江苏自强环保科技有限公司 | A kind of sewage disposal device |
| CN108947113B (en) * | 2018-07-09 | 2021-12-31 | 武汉中测联环境技术有限公司 | Sewage treatment equipment |
| CN111925066A (en) * | 2020-08-20 | 2020-11-13 | 重庆大学 | Split type continuous operation micro-grid dynamic membrane bioreactor |
| CN111925066B (en) * | 2020-08-20 | 2021-07-27 | 重庆大学 | Split type continuous operation micro-grid dynamic membrane bioreactor |
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Application publication date: 20150204 |