CN101928096A - Sewage treatment method and system in ecological sensitive areas - Google Patents

Sewage treatment method and system in ecological sensitive areas Download PDF

Info

Publication number
CN101928096A
CN101928096A CN2009102435774A CN200910243577A CN101928096A CN 101928096 A CN101928096 A CN 101928096A CN 2009102435774 A CN2009102435774 A CN 2009102435774A CN 200910243577 A CN200910243577 A CN 200910243577A CN 101928096 A CN101928096 A CN 101928096A
Authority
CN
China
Prior art keywords
sewage
pond
treatment
water
membrane
Prior art date
Application number
CN2009102435774A
Other languages
Chinese (zh)
Other versions
CN101928096B (en
Inventor
汪诚文
赵雪峰
王欣
付宏祥
Original Assignee
清华大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 清华大学 filed Critical 清华大学
Priority to CN2009102435774A priority Critical patent/CN101928096B/en
Publication of CN101928096A publication Critical patent/CN101928096A/en
Application granted granted Critical
Publication of CN101928096B publication Critical patent/CN101928096B/en

Links

Abstract

The invention discloses a sewage treatment method and a system in ecological sensitive areas. The method comprises the following steps: larger suspended matters in sewage are removed by using a collecting well the inlet of which is provided with a mechanical coarse screen, the treated sewage enters a pretreatment tank, the suspended matters are further removed by the coarse screen, animal and vegetable oils and mineral oils are removed by an oil separator, and the retreated sewage enters a regulating reservoir to equalize the water quantity and water quality; the pretreated sewage enters an anaerobic tank to be mixed with backflow mixed liquor from an anoxic tank; effluent from the anaerobic tank and the backflow mixed liquor from a membrane pool are mixed to enter the anoxic tank, and effluent from the anoxic tank enters an aerobic tank; effluent from the aerobic tank enters the membrane pool to be biodegraded; and the effluent is filtered by membranes. By adopting an anaerobic-anoxic-aerobic-MBR mode, the invention has higher treatment efficiency and stability and can effectively remove COD, BOD, TN, TP and oils in the sewage; and the effluent meets first grade A emission requirements, and can be used as a reuse water source, thereby protecting the environment and saving the water resources. The invention is especially suitable for treating rural domestic sewage and catering wastewater in the ecological sensitive areas.

Description

Ecological sensitive areas sewage water treatment method and system
Technical field
The present invention relates to a kind of sanitary sewage of ecological sensitive areas and integrated MBR (Membrane Bioreactor, membrane bioreactor) treatment process and system that food and drink waste water is handled of being used for.
Background technology
Ecological sensitive areas is meant oasis, areas of serious, rare animals and plants habitat or special ecological system, wildwood, tropical rain forest, mangrove forest, karang, fishes and shrimps spawning ground, important wetland and the natural fishing ground etc. in sandstorm source region, the desert.Ecological sensitive areas water resources preciousness is in order to keep the existence of specialized species.In these zones, high or require zero release to the water quality requirement of sewage effluent, and the water resources anxiety, it is obvious that regeneration effluent returns demands of applications.Therefore prevent that sewage is particularly important in the engineering of protection ecological sensitive areas to the pollution of discharge water resource.
In these zones; except that some mandatory areas of forbidding the people such as special-protection-by-the-State district; often be China part peasant that living of unit with the village; and the rural area blowdown system of China is also unsound; except that the rural development of part developed area the sewage disposal device; most of geographic rural area does not all have effective sewage treatment facility, but in the water system around directly being discharged into.Contain elements such as a large amount of organism and N, P in the domestic sewage in rural areas by using, enter water body and can cause that the content of chlorophyll a in the water body presents the rising of the order of magnitude, cause the algal bloom in the water body, cause the eutrophication phenomenon, cause the water quality deterioration of receiving water body, have a strong impact on the ecotope of ecologically sensitive area.Along with market economy increasing development and deep, a lot of Rural areass geographical ecotope characteristics superior according to responsive ecological zone have developed tourism, have developed the recreational facilities of forms such as Peasants Joy, holiday resort.In the level of economic development that improves whole rural area, the environmental pollution of ecologically sensitive area has more been accelerated in the increase of food and drink waste water.Therefore, the improvement work of the sanitary sewage in periphery rural area, reinforcement ecological sensitive areas territory is very urgent.
China's countryside sewage treating work still belongs to the starting stage.Since tradition on a large scale behind the cities and towns formula sewage collecting pattern of focusing on can not generally be generalized to the rural area, especially for being in ecological responsive Rural areas, to draining water quality requirement height, and the water resources anxiety, the recycling sewage generated by making demand is obvious.Therefore can take to collect in the certain area coverage qualified discharge or reuse after the construction decentralized type sewage treatment station realization sewage disposal.
Country sewage disperses to administer main artificial wet land treating system, contact oxidation technology, biological filter, the SBR technologies such as (Sequencing Batch Reactor Activated Sludge, sequencing batch active sludges) of adopting at present.Although artificial swamp has good landscape effect, also have a lot of shortcomings: its construction takies and has expended a large amount of land areas, and these national conditions for China's land resources scarcity have very important influence; The excavated volume that artificial swamp is built is big, and bigger to the influence of environment, especially the second ploughing to the engineering construction zone has very great and long-range influence; The management system imperfection of artificial swamp is to such an extent as to artificial swamp is building up a lot of burden that all become local government in back.Contact oxidation technology has higher volumetric loading to water quality, variation has adaptive faculty preferably to water quality and quantity, the mud generation is less simultaneously, shortcoming is that latch up phenomenon appears in microbial film between filler sometimes in the pond, the follow-up management inconvenience, substantially do not have the managerial personnel that are engaged in waste water control of specialty in the Rural areas, then can't carry out the processing of associated problem, finally cause sewage disposal phenomenon not up to standard to take place.The biological filter treatment effect is good, and is stable, is easy to management, save the energy, but floor space is big, and filtrate stops up easily, is easy to generate stink and filter tank fly, worsens environmental health.SBR is applicable to dispersion treatment sewage, its technical process is simple, treatment effect is stable, floor space is little, anti impulsion load is strong and have advantage such as denitrogenation dephosphorizing ability, but this area that does not have higher environmental consciousness in the rural area, unlatching operation to reactor, the peasant often takes notice of inadequately, also influences final wastewater treatment efficiency.
Existing MBR treatment system is primarily aimed at the processing of town sewage, in view of town sewage and country sewage feature have significantly different, utilize relevant design and operation data to instruct the construction of country sewage treatment system irrational often, the region characteristic, collection mode and the situations such as the sewage water yield and change of water quality that need the draining of investigation and analysis rural area, draw basic data, finally determine the parameter designing of treatment system in conjunction with the life in the countryside custom.China does not also have integrated MBR Design of processing system parameter and the operating parameter in conjunction with the processing feature of ecological responsive region country sewage at present.In these zones, country sewage is handled back emission standard strictness, or does not allow sewage discharge, the requirement operation of sewage disposal system is stable, therefore, research MBR single-item handling technology is used for the correlation parameter that country sewage is handled, and can guarantee the wastewater treatment efficiency in these environment sensitive zones.In addition, the MBR sewage disposal technology can be promoted in the rural area in the east China developed area, carries out miniaturization, distributing, garden sewage disposal.
Summary of the invention
The objective of the invention is at defective that exists in the prior art and deficiency, a kind of system that is mainly used in the sanitary sewage of handling ecological sensitive areas is provided.
For achieving the above object, the invention provides a kind of ecological sensitive areas sewage water treatment method, comprise step:
S1, pre-treatment: the pump well that uses inlet to be provided with mechanical coarse rack is removed bigger suspended substance in the sewage, sewage enters pretreatment pool afterwards, the coarse rack that is arranged on pretreatment pool inlet is used for further removing the suspended substance in the sewage, adopt oil slick and heavy oil in the oil trap removal sewage then, last sewage enters equalizing tank and handles;
S2, biological treatment and sludge treatment: pretreated sewage enters anaerobic pond, mixes with the backflow mixed liquor from anoxic pond in anaerobic pond; The anaerobic pond water outlet be mixed into anoxic pond from the backflow mixed liquor of membrane cisterna; The anoxic pond water outlet enters Aerobic Pond, refluxes to realize mixed solution and mud simultaneously; The Aerobic Pond water outlet enters membrane cisterna, finishes filtration treatment under the condition of negative pressure of membrane cisterna.
Wherein, the residence time of sewage in pump well is 1~2 hour.
Wherein, the interval of grid strip of described mechanical coarse rack is 20mm; The interval of grid strip of described coarse rack is 5mm; Between equalizing tank and anaerobic pond fine fack is set, its interval of grid strip is 0.5mm.
Wherein, the residence time of sewage in oil trap is 2~4 hours, and belt skimmer is set in the oil trap.
Wherein, the residence time of sewage in equalizing tank is 8~16 hours, and stirrer is set in equalizing tank or arranges that in its bottom perforated pipe is used for aeration.
Wherein, the treatment time of sewage in anaerobic pond is 2~4 hours; Treatment time in anoxic pond is 2~4 hours; Treatment time in Aerobic Pond is 3~5 hours, and mud age is 15-25d; Micro porous aeration head is set in Aerobic Pond, so that to the Aerobic Pond oxygen supply, the micro porous aeration head aperture is ¢ 215, and the gas-water ratio in the Aerobic Pond is 8: 1.
Wherein, described membrane cisterna is a membrane bioreactor, and the treatment time of sewage in described membrane bioreactor is 3~5 hours, and sludge concentration wherein is that 2000~5000mg/L, gas-water ratio are 20~30: 1, return current ratio of the mixed liquid is 500~150%; Stop 2min for operation 13min vacuum primingpump working time of membrane bioreactor, and be that 8 hours, membrane flux are 10~20L/m2h the switching time of its gas blower.
The present invention also provides a kind of ecological sensitive areas Sewage treatment systems, comprise: the pump well of Lian Jieing, pretreatment pool, anaerobic pond, anoxic pond, Aerobic Pond and membrane cisterna successively, handle equalizing tank afterwards from the sewage that pump well comes through pretreatment pool, enter anaerobic pond then, sewage is with mixing mutually from the backflow mixed liquor of anoxic pond in anaerobic pond; The anaerobic pond water outlet be mixed into anoxic pond from the backflow mixed liquor of membrane cisterna; The anoxic pond water outlet enters Aerobic Pond; The Aerobic Pond water outlet enters membrane cisterna, finishes filtration treatment in membrane cisterna.
Wherein, also comprise mechanical coarse rack, it is positioned at the ingress of described pump well; Also comprise coarse rack, it is positioned at the ingress of described pretreatment pool; Also comprise fine fack, it is between described equalizing tank and anaerobic pond.
Wherein, described membrane cisterna is membrane bioreactor MBR, it comprises membrane module, boring aeration pipe, outlet system, backwash system, cleaning system, purging system and Lift-on/Lift-off System, and described membrane module is positioned at directly over the described boring aeration pipe, and described purging system is arranged on the below of described membrane module.
Wherein, this system also comprises programmable logic controller system, it is used for regulating sewage at the residence time of equalizing tank, the flow that adjusting is arranged at the lift pump between equalizing tank and the anaerobic pond, and regulates working time and the air quantity that is arranged at the blower fan in Aerobic Pond and the membrane cisterna respectively.
Wherein, be provided for monitoring the online liquidometer of water level in the described equalizing tank.
The characteristics of this system comprise:
1) system of the present invention is mainly used in country sewage and food and drink waste water processing, can satisfy COD in the sewage, BOD, TN is when one-level A emission request is satisfied in the efficient removal of TP and oils, water outlet, but also reuse water source reaches the target of environment protection and conserve water resource simultaneously;
2) adopt from the membrane cisterna backflow mixed liquor, realize that simultaneously mixed solution and mud reflux, reduce mud backflow link, make more easy operation control of system, and reduced sludge reflux pump, reduce and invest and working cost;
3) at country sewage and the big characteristics of food and drink waste water water yield fluctuation, adopted the Controlling System of optimizing, at equalizing tank online liquidometer is set, monitoring equalizing tank water level also passes through PLC (Programmable Logic Control, programmable logic controller) system regulates working time and the air quantity that sewage places interior time of equalizing tank and lift pump flow, regulates Aerobic Pond and membrane cisterna inner blower, realize that system operational parameters and system energy consumption save variation with water yield daily variation and dull and rush season and regulate, guaranteeing to reach energy-saving and cost-reducing on the treatment effect basis;
4) adopt rational pre-treatment, as multistage fine fack and meticulous grid, and the operational conditions of optimizing, as the aeration rate of built-up type aeration, gas purging and optimization, water outlet at intermittence etc. realize film automatically cleaning by aeration and water outlet at intermittence etc. in biological reaction tank, thereby alleviate the pollution level that film is in operation, reduce cleaning frequency membrane, guarantee film system water flux, prolong film work-ing life, reduce working cost.
5) treatment system adopts reasonable elevation design, utilizes run by gravity as far as possible, reduces sewage and promotes, and most of treatment facility can place underground, can afforest on the ground, satisfies the view requirement.And system's facility all is convenient to safeguard.
6) the film district is provided with systems such as MBR membrane module system and supporting water outlet, backwash, cleaning, purging, lifting.Membrane module of living in is positioned at directly over the described boring aeration pipe.The membrane module bottom is provided with special-purpose purging system, purges the shake membrane element, to delay the sludge concentration accumulation of membrane element periphery.
To sum up, technique scheme has following advantage: adopt anaerobic-anoxic-aerobic coupling technique, have high processing efficient and stabilizing treatment effect, the sanitary sewage and the food and drink waste water that are particularly useful for the rural area in the ecological sensitive areas are handled.
Description of drawings
Fig. 1 is the schema of the method for the embodiment of the invention;
Fig. 2 is the structural representation of MBR reactor in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is the method flow diagram of the embodiment of the invention.This method is mainly handled the food and drink water of ecological sensitive areas, the mixing water of flush the toilet Heisui River and assorted draining, and the Heisui River of wherein flushing the toilet needs all to stop through three format manure pits receives pipe after 24 hours again.Sewage is collected through sewer line and is confluxed to sewage plant, passes through pre-treatment, biological treatment and sludge treatment successively.
The method of Processing Example of the present invention comprises pre-treatment when disposing of sewage, biological treatment and sludge treatment.Being suitable for the treating water weight range is 5~1,000t/d.
Specifically, sewage at first enters pretreatment section, passes through pump well 1, pretreatment pool 2 and equalizing tank 3 successively.Pretreated effect mainly is the most suspended substances matter of holding back in the sanitary sewage, and removes the grease in the water, guarantees that follow-up biological processing unit normally carries out.Wherein, mechanical coarse rack places the pump well inlet, and effect is to remove bigger suspended substance in the water, holds back suspended substances such as plastics bigger in the sanitary sewage, branch, removes the organism of a part of non-solubility.Sewage enters pretreatment pool afterwards, and the coarse rack (the second road coarse rack) that enters the mouth at pretreatment pool is used for further removing the suspended substance in the water, adopts oil slick and heavy oil in the oil trap removal sewage that has oil skimmer vessel afterwards, and last sewage enters equalizing tank.The 3rd road fine fack places between equalizing tank and the anaerobic pond, mainly guarantees the normal operation of membrane bioreactor.Equalizing tank water outlet place also is provided with the lift pump pond, and fine fack is placed in the wall of anaerobic pond, and lift rail is set, and regularly fine fack is promoted to ground and clears up.In order to guarantee the normal operation of membrane bioreactor, must with the interception of foreign material such as various fibers, slag thing, waste paper outside system, therefore, utilize fine fack to remove less suspended substance in the waste water.
The equalizing tank water outlet enters AAO-MBR integrated bioreactor (comprising AAO and integrated MBR reactor).Wherein AAO comprises anoxic pond, anaerobic pond and Aerobic Pond.
Pretreated sewage enters anaerobic pond 4, and here, sewage is with mixing mutually from the backflow mixed liquor of anoxic pond 5, and reflux ratio is 50%.Under anaerobic, the intravital ATP of the polyP bacteria in the sewage is hydrolyzed, and emits H 3PO 4And energy, form ADP, keep self growth.Phosphorus in the mud is under anaerobic effectively discharged, for aerobic condition mud is prepared to a large amount of absorptions of phosphorus.Because the returned sluge of anoxic pond mixes with water inlet, make the dissolved organic matter in the former water of the quick absorption of hungry active sludge efficiently, and the organism of difficult degradation is played good hydrolytic action.Simultaneously, part NH 3-N is removed because of the synthetic of cell, the NH in the sewage 3-N density loss, BOD density loss.
Anaerobic pond 4 water outlets be mixed into anoxic pond 5 from the backflow mixed liquor of membrane cisterna 7, finish the removal of TN here, and guarantee the sludge concentration in the biological tank.Anaerobic pond 4 water outlets enter anoxic pond 5, the returned sluge that also has membrane cisterna 7 that enters simultaneously, and return current ratio of the mixed liquid is 50%-150%.The premiere feature of anoxic pond 5 is denitrogenations, and in this reactor, under the anoxybiotic condition, denitrifying bacteria utilizes the organism in the sewage to make carbon source, and a large amount of nitric nitrogens and the nitrite nitrogen of bringing in membrane cisterna 7 returned sluges is reduced to N 2And be discharged in the air BOD 5Concentration continues to descend, and nitric nitrogen concentration also descends significantly.
The water outlet of anoxic pond 5 enters aerobic (aeration) pond 6, finishes BOD here 5Removal and ammonia nitrogen nitrated.Utilize in the biological tank in the prolific active sludge microorganism and nitrifying bacteria community, polyP bacteria at aeration phase, carbon containing, ammonia nitrogen, phosphorus organic pollution materials in degraded or the planar water are to reach the purpose that purifies water.
Aerobic Pond 6 water outlets enter membrane cisterna 7, and the film piece is immersed in the mixed solution, and under the condition of negative pressure that infiltration (water outlet) pump produces, water passes film and finishes filtration treatment.Membrane cisterna 7 has replaced the function in second pond suspended substance and liquid separation and granule filter material filter tank.Wherein, membrane bioreactor (MBR) is the new technology that the biochemical reaction in membrane technique and the sewage disposal is combined, and is worldwide used more and more widely at present.Membrane cisterna 7 utilizes film that the dirt water that contains in the biochemical reaction tank is filtered, and realizes mud-water separation, and membrane cisterna 7 water outlets enter clean water basin 8.On the one hand, film has been held back the microorganism in the reaction tank, activated sludge concentration in the pond is increased greatly, reach very high level, make the biochemical reaction of degradation of sewage carry out rapider more thoroughly, on the other hand, because the high filtering precision of film, guaranteed that water outlet is as clear as crystal, obtained high-quality product water.
Membrane module is selected design flux 10-20L/m for use 2H, gas blower switched once in per 8 hours, and vacuum primingpump work stopped 2 minutes in 13 minutes.Purging (aeration) in the MBR film district has two purposes, and the one, be used for membrane module air water vibration on every side, keep the film cleaning surfaces, the 2nd, also can be organic further degraded needed oxygen is provided.By the MBR membrane module, filtered solution compiles via the MBR header delivers to ozone buffering contact tank to water after the biological degradation under the extracting effect of filtrate vacuum primingpump.By the efficient crown_interception of film, all bacteriums and suspended substance are all dammed in the aeration tank, can the effectively catching nitrifier, and nitration reaction is carried out smoothly, effectively remove ammonia nitrogen; Simultaneously can hold back the larger molecular organics that is difficult to degrade, prolong its residence time in reactor, make it to be degraded to greatest extent.
Preliminary sedimentation tank need to prove, preliminary sedimentation tank is not set in the system that present method adopted, though because can effectively be removed SS, BOD 5Reduce construction cost and running cost that two stage biological is handled, but because the influent concentration of country sewage is lower, and final degree of treatment is to reach dephosphorization denitrogenation, for guaranteeing biological dephosphorize denitrification C: the basic ratio of N and C: P needs, so preliminary sedimentation tank is not set in the native system.
It is as follows that this method prevents to alleviate the technological design that film pollutes:
1) membrane cisterna is provided with systems such as MBR membrane module system and supporting water outlet, backwash, cleaning, purging, lifting.Described membrane module is positioned at directly over the boring aeration pipe.The membrane module bottom is provided with special-purpose purging system, purges the shake membrane element, to delay the sludge concentration accumulation of membrane element periphery.Excess sludge is regularly discharged by residual sludge pump, concentration of activated sludge and sludge age in the may command system.
2) adopt the multi-stage coarse and fine grid, guarantee pretreating effect.
3) based on above-mentioned design, the pollution level that film is in operation is controlled, is alleviated in control, vacuum primingpump operation by combination aeration, aeration time aeration rate and the intermittent time with the intermittent time, reduce cleaning frequency membrane, guarantees film system water flux, prolong film work-ing life, reduce working cost.
As can be seen from the above embodiments, the method for the embodiment of the invention mainly adopts the sanitary sewage of MBR technical finesse ecological sensitive areas, adopts anaerobic-anoxic-aerobic-MBR coupling technique, has high processing efficient and stabilizing treatment effect.Experiment shows that COD is 400mg/L in water inlet, NH 4 +-N is 40mg/L, SS is 200mg/L, total phosphorus is 6mg/L, total nitrogen is under the condition of 55mg/L, and MBR reactor water outlet COD is 14mg/L, and ammonia nitrogen is 0.38mg/L, suspended substance is 10mg/L, total nitrogen is 5.34mg/L, and total phosphorus is 0.484mg/L, and effluent quality can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) middle one-level A standard.
Each index of the suitable sewage quality of handling of this method is as shown in table 1:
Table 1
Sequence number Index Water quality
1? pH? 6~9?
2? Chemical oxygen demand COD cr(mg/L)≤? 400?
3? Biochemical oxygen demand (BOD) BOD on the 5th 5(mg/L)≤? 250?
4? Suspended substance (SS) (mg/L)≤ 200?
5? Ammonia nitrogen (mg/L)≤ 40?
6? TN(mg/L)≤? 55?
7? TP(mg/L)≤? 6?
8? Vegetables oil≤ 50?
9? Mineral oil≤ 3?
Sewage is after present method is handled, and water outlet can reach the water quality shown in the table 2, satisfies " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) middle one-level A emission standard.In addition, this method water outlet can be satisfied standard in " reuse of wastewater engineering design standard " (GB/T 50335-2002) after sterilization, is back to greening, flushes the toilet, carwash and landscape water etc.
Table 2
Project Urban wastewater treatment firm pollutent one-level A standard Reclaimed water reuse is in the water quality standard of landscape environment
?pH? 6~9? 6~9?
?COD cr(mg/L)? 50? -?
?BOD 5(mg/L)? 10? 6?
?SS(mg/L)? 10? 10?
?NH 4 +-N(mg/L)? 5? 5?
?TN(mg/L)? 15? 15?
?TP(mg/L)? 0.5? 0.5?
Always (excrement) coliform (individual/L) 1000? 2000?
The present invention also provides a kind of ecological sensitive areas Sewage treatment systems, comprise: the pump well of Lian Jieing, pretreatment pool, anaerobic pond, anoxic pond, Aerobic Pond and membrane cisterna successively, handle equalizing tank afterwards from the sewage that pump well comes through pretreatment pool, enter anaerobic pond then, sewage is with mixing mutually from the backflow mixed liquor of anoxic pond in anaerobic pond; The anaerobic pond water outlet be mixed into anoxic pond from the backflow mixed liquor of membrane cisterna; The anoxic pond water outlet enters Aerobic Pond; The Aerobic Pond water outlet enters membrane cisterna, finishes filtration treatment in membrane cisterna.The annexation between each integral part of this system and the processing parameter of use are as previously mentioned.In the present embodiment, this system also is provided with the PLC system, it is used for regulating sewage at the residence time of equalizing tank, the flow that adjusting is arranged at the lift pump between equalizing tank and the anaerobic pond, and regulates working time and the air quantity that is arranged at the blower fan in Aerobic Pond and the membrane cisterna respectively.Also be provided for monitoring the online liquidometer of water level in the described equalizing tank.
When carrying out above-mentioned experiment, the working cost of this system is about 1 yuan of/ton water.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.

Claims (10)

1. an ecological sensitive areas sewage water treatment method is characterized in that, comprises step:
S1, pre-treatment: the pump well (1) that uses inlet to be provided with mechanical coarse rack is removed bigger suspended substance in the sewage, sewage enters pretreatment pool (2) afterwards, the coarse rack that is arranged on pretreatment pool (2) inlet is further removed the suspended substance in the sewage, adopt vegetable and animals oils and mineral oil in the oil trap removal sewage then, last sewage enters equalizing tank (3) and handles;
S2, biological treatment and sludge treatment: pretreated sewage enters anaerobic pond (4), mixes with the backflow mixed liquor from anoxic pond (5) in anaerobic pond (4); Anaerobic pond (4) water outlet be mixed into anoxic pond (5) from the backflow mixed liquor of membrane cisterna (7), realize the backflow of mixed solution and mud simultaneously, anoxic pond (5) water outlet enters Aerobic Pond (6); Aerobic Pond (6) water outlet enters membrane cisterna (7), finishes filtration treatment under biological degradation and the condition of negative pressure at membrane cisterna (7).
2. ecological sensitive areas sewage water treatment method as claimed in claim 1 is characterized in that, the residence time of sewage in pump well is 1~2 hour; The residence time of sewage in oil trap is 2~4 hours, and belt skimmer is set in the oil trap; The residence time of sewage in equalizing tank is 8~16 hours, and stirrer is set in equalizing tank or arranges that in its bottom perforated pipe is used for aeration.
3. ecological sensitive areas sewage water treatment method as claimed in claim 1 is characterized in that, the interval of grid strip of described mechanical coarse rack is 20mm; The interval of grid strip of described coarse rack is 5mm; Between equalizing tank (3) and anaerobic pond (4) fine fack is set, its interval of grid strip is 0.5mm.
4. ecological sensitive areas sewage water treatment method as claimed in claim 1 is characterized in that, the treatment time of sewage in anaerobic pond is 2~4 hours; Treatment time in anoxic pond is 2~4 hours; Treatment time in Aerobic Pond is 3~5 hours, and mud age is 15-25d; Micro porous aeration head is set in Aerobic Pond, so that to the Aerobic Pond oxygen supply, the micro porous aeration head aperture is ¢ 215, and the gas-water ratio in the Aerobic Pond is 8: 1.
5. as each described ecological sensitive areas sewage water treatment method of claim 1~4, it is characterized in that, described membrane cisterna is a membrane bioreactor, the treatment time of sewage in described membrane bioreactor is 3~5 hours, and sludge concentration wherein is that 2000~5000mg/L, gas-water ratio are 20~30: 1, return current ratio of the mixed liquid is 500~150%; Stop 2min for operation 13min vacuum primingpump working time of membrane bioreactor, and be that 8 hours, membrane flux are 10~20L/m2h the switching time of its gas blower.
6. ecological sensitive areas Sewage treatment systems, it is characterized in that, comprise: the pump well of Lian Jieing (1), pretreatment pool (2), anaerobic pond (4), anoxic pond (5), Aerobic Pond (6) and membrane cisterna (7) successively, handle equalizing tank afterwards from the sewage that pump well (1) comes through pretreatment pool (2), enter anaerobic pond (4) then, sewage is with mixing mutually from the backflow mixed liquor of anoxic pond (5) in anaerobic pond (4); Anaerobic pond (4) water outlet be mixed into anoxic pond (5) from the backflow mixed liquor of membrane cisterna (7); Anoxic pond (5) water outlet enters Aerobic Pond (6); Aerobic Pond (6) water outlet enters membrane cisterna, finishes filtration treatment in membrane cisterna (7).
7. ecological sensitive areas Sewage treatment systems as claimed in claim 6 is characterized in that, also comprises mechanical coarse rack, and it is positioned at the ingress of described pump well (1); Also comprise coarse rack, it is positioned at the ingress of described pretreatment pool (2); Also comprise fine fack, it is positioned between described equalizing tank (3) and the anaerobic pond (4).
8. ecological sensitive areas Sewage treatment systems as claimed in claim 6, it is characterized in that, described membrane cisterna (7) is membrane bioreactor MBR, it comprises membrane module, boring aeration pipe, outlet system, backwash system, cleaning system, purging system and Lift-on/Lift-off System, described membrane module is positioned at directly over the described boring aeration pipe, and described purging system is arranged on the below of described membrane module.
9. ecological sensitive areas Sewage treatment systems as claimed in claim 6, it is characterized in that, also comprise programmable logic controller system, it is used for regulating sewage at the residence time of equalizing tank (3), the flow that adjusting is arranged at the lift pump between equalizing tank (3) and the anaerobic pond (4), and regulates working time and the air quantity that is arranged at the blower fan in Aerobic Pond (6) and the membrane cisterna (7) respectively.
10. as each described ecological sensitive areas Sewage treatment systems of claim 6~9, it is characterized in that, be provided for monitoring the online liquidometer of water level in the described equalizing tank (3).
CN2009102435774A 2009-12-28 2009-12-28 Sewage treatment method and system in ecological sensitive areas CN101928096B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009102435774A CN101928096B (en) 2009-12-28 2009-12-28 Sewage treatment method and system in ecological sensitive areas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009102435774A CN101928096B (en) 2009-12-28 2009-12-28 Sewage treatment method and system in ecological sensitive areas

Publications (2)

Publication Number Publication Date
CN101928096A true CN101928096A (en) 2010-12-29
CN101928096B CN101928096B (en) 2012-07-25

Family

ID=43367590

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009102435774A CN101928096B (en) 2009-12-28 2009-12-28 Sewage treatment method and system in ecological sensitive areas

Country Status (1)

Country Link
CN (1) CN101928096B (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102020402A (en) * 2011-01-04 2011-04-20 上海市城市建设设计研究院 Energy-saving sewage treatment method by membrane biological reactor (MBR) process
CN102701547A (en) * 2012-07-04 2012-10-03 北京碧水源科技股份有限公司 Advanced municipal sewage treatment method
CN103086571A (en) * 2013-01-17 2013-05-08 东莞市泽林环境工程有限公司 High-efficiency modular sewage treatment system
CN104030521A (en) * 2014-05-21 2014-09-10 成都振中电气有限公司 Wastewater treatment device
CN104230107A (en) * 2014-03-28 2014-12-24 中联环有限公司 A2/O (anaerobic-anoxic-oxic) and MBR (membrane bioreactor) combined sewage regeneration technology and device
CN104261614A (en) * 2014-08-05 2015-01-07 天津市市政工程设计研究院 Step-feed multi-stage AO+MBR (Anoxic/Oxic+Membrane Biological Reactor) nitrogen and phosphorus removal system
RU2537611C2 (en) * 2012-08-14 2015-01-10 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Apparatus for purifying household waste water
CN104291518A (en) * 2014-08-25 2015-01-21 杭州清城能源环保工程有限公司 Standard discharge processing system for high-concentration livestock and poultry waste and processing method thereof
CN104321285A (en) * 2012-05-07 2015-01-28 大成企业株式会社 Wastewater treatment system and treatment method therefor
CN104355489A (en) * 2014-10-31 2015-02-18 四川景星环境科技有限公司 A2/O and MBR (Membrane Biological Reactor) combination modularized sewage treatment system
CN104649513A (en) * 2015-01-07 2015-05-27 中国电器科学研究院有限公司 Resourceful treatment system for municipal domestic wastewater and organic waste
CN105174660A (en) * 2015-10-30 2015-12-23 太仓东能环保设备有限公司 Urban domestic sewage treatment technology using A/O method
CN105923896A (en) * 2016-05-11 2016-09-07 安徽洋森环保节能科技有限公司 Method for treating domestic wastewater with porous multilayer hollow PTFE-MBR membrane
CN106227147A (en) * 2016-08-31 2016-12-14 马占久 Control system of sewage treatment plant
CN109293128A (en) * 2018-08-06 2019-02-01 浙江筑原生态科技有限公司 A kind of Sewage from Ships processing system
CN109867412A (en) * 2019-03-20 2019-06-11 北京科泰兴达高新技术有限公司 A kind of sewage disposal system

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102020402A (en) * 2011-01-04 2011-04-20 上海市城市建设设计研究院 Energy-saving sewage treatment method by membrane biological reactor (MBR) process
CN104321285A (en) * 2012-05-07 2015-01-28 大成企业株式会社 Wastewater treatment system and treatment method therefor
CN102701547B (en) * 2012-07-04 2013-12-11 北京碧水源科技股份有限公司 Advanced municipal sewage treatment method
CN102701547A (en) * 2012-07-04 2012-10-03 北京碧水源科技股份有限公司 Advanced municipal sewage treatment method
RU2537611C2 (en) * 2012-08-14 2015-01-10 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Apparatus for purifying household waste water
CN103086571A (en) * 2013-01-17 2013-05-08 东莞市泽林环境工程有限公司 High-efficiency modular sewage treatment system
CN104230107B (en) * 2014-03-28 2016-03-02 中联环股份有限公司 A kind of A2/O+ MBR combined sewage water reclaiming process and device thereof
CN104230107A (en) * 2014-03-28 2014-12-24 中联环有限公司 A2/O (anaerobic-anoxic-oxic) and MBR (membrane bioreactor) combined sewage regeneration technology and device
CN104030521A (en) * 2014-05-21 2014-09-10 成都振中电气有限公司 Wastewater treatment device
CN104261614A (en) * 2014-08-05 2015-01-07 天津市市政工程设计研究院 Step-feed multi-stage AO+MBR (Anoxic/Oxic+Membrane Biological Reactor) nitrogen and phosphorus removal system
CN104291518A (en) * 2014-08-25 2015-01-21 杭州清城能源环保工程有限公司 Standard discharge processing system for high-concentration livestock and poultry waste and processing method thereof
CN104291518B (en) * 2014-08-25 2016-08-24 杭州清城能源环保工程有限公司 The processing system of a kind of high concentration waste water of livestock poultry qualified discharge and processing method
CN104355489A (en) * 2014-10-31 2015-02-18 四川景星环境科技有限公司 A2/O and MBR (Membrane Biological Reactor) combination modularized sewage treatment system
CN104649513A (en) * 2015-01-07 2015-05-27 中国电器科学研究院有限公司 Resourceful treatment system for municipal domestic wastewater and organic waste
CN105174660A (en) * 2015-10-30 2015-12-23 太仓东能环保设备有限公司 Urban domestic sewage treatment technology using A/O method
CN105923896A (en) * 2016-05-11 2016-09-07 安徽洋森环保节能科技有限公司 Method for treating domestic wastewater with porous multilayer hollow PTFE-MBR membrane
CN106227147A (en) * 2016-08-31 2016-12-14 马占久 Control system of sewage treatment plant
CN109293128A (en) * 2018-08-06 2019-02-01 浙江筑原生态科技有限公司 A kind of Sewage from Ships processing system
CN109867412A (en) * 2019-03-20 2019-06-11 北京科泰兴达高新技术有限公司 A kind of sewage disposal system

Also Published As

Publication number Publication date
CN101928096B (en) 2012-07-25

Similar Documents

Publication Publication Date Title
US8246829B2 (en) Systems and methods for water treatment and remediation
CN202898159U (en) Sewage treatment device
Sato et al. Prospects for a self-sustainable sewage treatment system: a case study on full-scale UASB system in India's Yamuna River Basin
US8021551B2 (en) Eco-treatment system
US7361268B2 (en) Waste treatment systems
CN107055754B (en) Circulating zero-valent iron biofilter for strengthening treatment of rural domestic sewage
CN101492230B (en) Comprehensive processing process and system for cultivation wastewater
CN101357812B (en) Processing method for domestic garbage leachate
CN103288303B (en) A kind of utilization of resources of livestock breeding wastewater and cyclic utilization method
CN101481194B (en) town domestic sewage treatment process
CN100398470C (en) Infiltration method for treating garbage
US6554998B1 (en) Apparatus for lagoon remediation
CN1309665C (en) Nitrogen and phosphorus removing process
CN2908484Y (en) Animal culturing sewage treatment system
CN103819049B (en) A kind of sewage water treatment method and system
CN101863590B (en) Combined anoxic/aerobic enhanced biological activated carbon dynamic membrane nitrogen and phosphorus removal process
WO2004087584A1 (en) System and method for the treatment of wastewater using plants
HU225517B1 (en) Method and device for sewage treatment
WO2009049401A1 (en) An integrated water processing technology
CN102807302B (en) Method for treating livestock and poultry breeding waste water
CN204125300U (en) A kind of purification tank for the treatment of dispersion type domestic wastewater
Watson et al. Pilot-scale nitrification studies using vertical-flow and shallow horizontal-flow constructed wetland cells
CN101381155B (en) Bio-ecological combination method for effluent purification and reclamation and apparatus
CN102515430A (en) Live pig slaughtering wastewater treating method
CN202346866U (en) Integrated anaerobic-aerobic equipment for treating domestic sewage

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120725

Termination date: 20181228

CF01 Termination of patent right due to non-payment of annual fee