CN207468411U - A kind of rural domestic sewage treatment system - Google Patents

A kind of rural domestic sewage treatment system Download PDF

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Publication number
CN207468411U
CN207468411U CN201721258893.5U CN201721258893U CN207468411U CN 207468411 U CN207468411 U CN 207468411U CN 201721258893 U CN201721258893 U CN 201721258893U CN 207468411 U CN207468411 U CN 207468411U
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sewage
anaerobic
reaction
grid
aerobic tank
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刘训东
程寒飞
詹茂华
刘昀
白扬
冯植飞
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Huatian Engineering and Technology Corp MCC
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Huatian Engineering and Technology Corp MCC
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Abstract

The utility model discloses a kind of rural domestic sewage treatment system, including sequentially connected grid, regulating reservoir, anaerobic pond, aerobic tank and artificial swamp, wherein, grid is connect with sewage pipe, for intercepting suspension and the floating pollutants in sewage pipe in sewage;The water quality and water of sewage that regulating reservoir is discharged for adjusting from grid;The sewage discharged from regulating reservoir carries out anaerobic reaction in anaerobic pond;The sewage discharged from anaerobic pond carries out aerobic reaction in aerobic tank;The sewage discharged from aerobic tank enters artificial swamp, nitrogen, phosphorus, organic matter, pathogen in the sewage of artificial swamp removal aerobic tank discharge and one or more, the artificial wetland effluent discharge in the solid matter to suspend in water.The utility model can be handled effectively for domestic sewage in rural areas, and technology requirement is low, simple in structure, floor space is small, at low cost, adjustment is flexible, treatment effeciency is high, high treating effect.

Description

A kind of rural domestic sewage treatment system
Technical field
The utility model is related to technical field of sewage, and in particular, to a kind of rural domestic sewage treatment system.
Background technology
The long-term urban and rural dual structure in China leads in terms of sewage disposal significant difference between urban and rural areas:In city, sewage Not only there are perfect collection, treatment technology and facility, and the laws and regulations of national promulgation system and standard are controlled;And The rural area of national total area nearly 90% is accounted for, 96% village does not have discharge conduit and sewage disposal system.Untreated life Sewage brings each pollutant into river, seriously pollutes all kinds of water sources, cause to have occurred including by point source and non-dots source emission Many ecological environment problems such as cyanobacterial bloom.
Domestic sewage in rural areas is mainly toilet-flushing sewage and laundry, washes rice, wash vegetables, waste water of bath.It mainly lives in sewage Waste material and the excreta of people, generally without noxious material, often containing the nutriments such as nitrogen, phosphorus, also a large amount of bacterium, virus And parasitic ovum.Because of differences such as living habit, life style, economic levels, the water quality and quantity of domestic sewage in rural areas differs greatly, Sewage has following features and problem:(1) sewage distribution relatively disperses, and coverage is wide, randomness is strong, prevents very difficult, pipe network Collection system is unsound, extensive style discharge, substantially without sewage treatment facility;(2) amount standard in rural water is relatively low, the discharge of sewage Small and variation coefficient is big (3.5~5.0);(3) sewage composition is complicated, but the concentration of various pollutants is relatively low, Biodegradability of Wastewater It is relatively strong.
It since life in the countryside pollution sources disperse, is not easy to concentrate, villages and small towns resident's environmental consciousness is poor, falls in addition economic level is opposite Afterwards, there is also larger difficulties in improvement, and therefore, domestic sewage in rural areas has become the important pollution sources for influencing water body environment quality. During there is eutrophication in the natural and artificial water in China 75% at present, and this trend constantly deteriorates.
In recent years, with《Water prevention and cure of pollution action plan》I.e. the promulgation of " ten, water ", the improvement of domestic sewage in rural areas are got over To be more valued by people.At present, selected technology mainly has buried sewage in China's rural domestic sewage treatment engineering Processing biological denitrification process (A/O techniques, Anoxic/Oxic) is combined with artificial swamp, buried sewage disposal biological denitrification process It is combined with ecological pond, buried sewage disposal biological denitrification phosphorous removal technique (A2/ O techniques, Anaerobic-Anoxic-Oxic) and people Work wetland combines, bio-trickling is combined with artificial swamp, integrated film bioreactor technology (MBR techniques, Membrane Bio-Reactor) etc., but presence takes up a large area, load is low, high energy consumption, investment is big, operating cost is high, treatment effect is paid no attention to The problems such as thinking.
Utility model content
In view of problem above, the purpose of this utility model is to provide a kind of rural domestic sewage treatment system, suitable for agriculture Village and cell isodispersity sewage effluent processing, solve existing rural domestic sewage treatment system takes up a large area, load is low, fortune The problems such as row is costly.
To achieve these goals, rural domestic sewage treatment system described in the utility model, including:Sequentially connected lattice Grid, regulating reservoir, anaerobic pond, aerobic tank and artificial swamp,
Wherein, the grid is connect with sewage pipe, for intercepting suspension and the floating dirt in the sewage in the sewage pipe Contaminate object, the water quality and water of sewage that the regulating reservoir is discharged for adjusting from the grid, the sewage of the regulating reservoir discharge Anaerobic reaction is carried out in the anaerobic pond, the sewage of the anaerobic pond discharge carries out aerobic reaction, institute in the aerobic tank The sewage for stating aerobic tank discharge enters the artificial swamp, and the artificial swamp is removed in the sewage of the aerobic tank discharge It is one or more in nitrogen, phosphorus, organic matter, the solid matter of pathogen and suspension in water, the artificial wetland effluent row It puts.
Preferably, the water surface of the grid, the regulating reservoir, the anaerobic pond, the aerobic tank and the artificial swamp Elevation is successively from high to low so that sewage is from the sewage pipe according to gravity flowing to the artificial swamp.
Preferably, the anaerobic pond is anaerobic baffle plate reaction tank, and the anaerobic baffle plate reaction tank includes more reaction grids Device is often both provided with filler fixed bed in reaction grid device, biomembrane, the tune is formed on the filler of the filler fixed bed The sewage of pond discharge is saved successively by every reaction grid device in the anaerobic baffle plate reaction tank, then flows into the aerobic tank.
Further, it is preferable to ground, filler is iron-carbon filling material or medium-soft plastic optical fibre in the anaerobic baffle plate reaction tank.
Preferably, the aerobic tank is film aeration and biological reaction tank, and the film aeration and biological reaction tank includes membrane module, film Component framework and air supply system, the membrane module frame is installed on the film aeration and biological reaction tank bottom, for described in fixation Membrane module, the air supply system are connect by pipeline with the membrane module.
Further, it is preferable to ground, the membrane module includes composite hollow fiber membrane.
Preferably, the bottom of pond setting sludge lifting pump of the regulating reservoir, the sludge lifting pump are described for that will be deposited in The insoluble suspended solid material discharge of regulating reservoir bottom.
Preferably, the water outlet of the aerobic tank is connect with the water inlet of the anaerobic pond, from the water outlet of the aerobic tank The sewage backflow of mouth discharge carries out anti-nitration reaction to the anaerobic pond in the anaerobic pond.
Further, it is preferable to ground, the reflux ratio of sewage backflow to the anaerobic pond discharged from the aerobic tank is 1.5~ 3 times.
Preferably, the artificial swamp is surface streaming artificial swamp, Horizontal subsurface constructed wetland or vertical subsurface flow formula One kind in artificial swamp.
Compared with prior art, the utility model has the following advantages and beneficial effect:
The utility model realizes the low energy consumption operation of the rural domestic sewage treatment system, has capital construction and operating cost Low, floor space is small and the features such as good sewage processing effect, is particularly suitable for rural area and the place of cell isodispersity sewage effluent Reason.
Description of the drawings
Fig. 1 is the composition block diagram of rural domestic sewage treatment system described in the utility model;
Fig. 2 is anaerobic baffle plate reaction tank structure diagram described in the utility model.
Specific embodiment
Embodiment described in the utility model described below with reference to the accompanying drawings.Those of ordinary skill in the art can recognize Know, it, can be with a variety of different mode or combinations to institute in the case of the spirit and scope without departing from the utility model The embodiment of description is modified.Therefore, attached drawing and description are regarded as illustrative in nature rather than for limiting claim Protection domain.In addition, in the present specification, attached drawing is drawn not in scale, and identical reference numeral represents identical portion Point.
The present embodiment is described in detail with reference to Fig. 1 and Fig. 2.
Fig. 1 is the composition block diagram of rural domestic sewage treatment system described in the utility model, as shown in Figure 1, the rural area Domestic sewage processing system includes sequentially connected grid 100, regulating reservoir 200, anaerobic pond 300, aerobic tank 400 and Manual moist Ground 500.Wherein, grid 100 is connect with sewage pipe, for intercepting suspension and the floating pollutants in the sewage in sewage pipe;It adjusts The water quality and water of sewage that section pond 200 is discharged for adjusting from grid;The sewage that regulating reservoir 200 is discharged is in anaerobic pond 300 Carry out anaerobic reaction;The sewage that anaerobic pond 300 is discharged carries out aerobic reaction in aerobic tank 400;The sewage that aerobic tank 400 is discharged Into artificial swamp 500, artificial swamp 500 remove nitrogen in the sewage that aerobic tank 400 is discharged, phosphorus, organic matter, pathogen and One or more in the solid matter to suspend in water, 500 Chinese effluent of artificial swamp can be arranged directly in earth's surface or use In agricultural irrigation.The utility model can have capital construction and operating cost is low, floor space is small and good sewage processing effect etc. is special Point is particularly suitable for the processing of rural area and cell isodispersity sewage effluent.
Since the flow of sewage and pollutant concentration that are flowed out from different sewage pipes have differences, the flow of sewage or pollution Object fluctuation of concentration influences the normal operation of subsequent technique compared with conference, and therefore, sewage enters regulating reservoir after by grid 100 In 200, the water quality and water of sewage are adjusted by regulating reservoir 200, the difference between reduction sewage between pollutant concentration, The unified progress anaerobic reaction of anaerobic pond 300 is facilitated access for, and regulating reservoir 200 does not have the adjusting of sewage quality and water Body standard.
Preferably, grid 100, regulating reservoir 200, anaerobic pond 300, aerobic tank 400 and artificial swamp 500 can by pipeline or Irrigation canals and ditches connect, and water level elevation is successively from high to low so that sewage is from sewage pipe according to gravity flowing to artificial swamp.The utility model Without additionaling power equipment, the depth displacement between each device is utilized so that sewage relies on gravity automatic flowing in each device, drop The low rural domestic sewage treatment system operation energy consumption.
Preferably, regulating reservoir 200 can also also serve as sedimentation basin use, and sludge lifting pump is set in the bottom of pond of regulating reservoir 200, The insoluble suspended solid material (SS, suspended solids) for being deposited in 200 bottom of regulating reservoir is discharged, to regulating reservoir 200 carry out regularly spoil disposal and draw clearly, and the insoluble solid substance of bulky grain is avoided to be accumulated in regulating reservoir 200.
Preferably, anaerobic pond 300 is anaerobic baffle plate reaction tank (ABR ponds, Anaerobic Bafflted Reactor). Fig. 2 is anaerobic baffle plate reaction tank structure diagram described in the utility model, as shown in Fig. 2, anaerobic baffle plate reaction tank 300 wraps Include more reaction grid devices 310, in Fig. 2 for four, per reaction grid device 310 in be both provided with filler fixed bed 311, filled out described Expect to be formed with biomembrane on the filler of fixed bed 311, increase per the biomass in reaction grid device, be conducive to dirty Organic substance in water Degradation.The sewage that regulating reservoir 200 is discharged enters from the water inlet 301 of anaerobic baffle plate reaction tank 300, passes through successively per reaction grid The anaerobic reactions such as acidification are hydrolyzed in every reaction grid device 310, are flowed out in aerobic tank 400 from water outlet 302, instead for device 310 The biogas that should be generated in the process is discharged from the top of every reaction grid device.Wherein, the filler in the anaerobic baffle plate reaction tank 300 For iron-carbon filling material or medium-soft plastic optical fibre.
Preferably, aerobic tank 400 is film aeration and biological reaction tank (MABR ponds, Membrane aeration bioreactor).The film aeration and biological reaction tank includes membrane module, membrane module frame and air supply system, the membrane module frame Frame is installed on the bottom of film aeration and biological reaction tank, and for fixing membrane module, air supply system is connect by pipeline with membrane module, from The sewage discharged in ABR ponds, which enters, carries out aerobic reaction in MABR ponds.Preferably, membrane module includes composite hollow fiber membrane, multiple Closing hollow-fibre membrane has many advantages, such as that good mechanical property, anticorrosive and oxygen delivery capacity are strong.
Preferably, the water outlet of aerobic tank 400 is connect with the water inlet of anaerobic pond 300, is arranged from the water outlet of aerobic tank 400 The foul water fraction gone out enters artificial swamp 500, is partly refluxed to anaerobic pond 300, and anti-nitration reaction is carried out in anaerobic pond 300, To improve the removal rate of nitrogen.Wherein, the reflux ratio that sewage is back to anaerobic pond 300 from aerobic tank 400 is 1.5~3 times, be can be selected The components such as pump will be back to from the sewage transport that aerobic tank 400 is discharged in anaerobic pond 300.
Artificial swamp is built using adaptation to local conditions such as the pond of rural areas, irrigation canals and ditches, it is preferable that artificial swamp is surface One kind in artificial wetland, horizontal drowned flow artificial wet land or vertical subsurface flow wetland.
It is further illustrated by the examples that follow the utility model.
Using raw water quality as:COD (COD, Chemical Oxygen Demand) 189mg/L, biochemical oxygen demand (BOD) (BOD5, Biochemical Oxygen Demand) and 96.4mg/L, ammonia-nitrogen content index (NH3- N, Ammonia nitrogen Content index) 41.3mg/L, total phosphorus (TP, total phosphorus) 5.1mg/L domestic sewage in rural areas for.
Domestic sewage in rural areas is intercepted from sewage pipe by grid in sewage after the larger suspension of particle and floating pollutants, Under the effect of gravity, it automatically flows into regulating reservoir.
The water quality of sewage and water discharged from grid are adjusted by regulating reservoir, reduce water quality or water fluctuation pair The influence of subsequent process flow, to ensure the normal operation of subsequent process flow.
Sewage enters ABR ponds after pond is adjusted after the adjustment, and it is anti-that anaerobic reactions, every lattice in ABR ponds such as acidification are hydrolyzed Answer the filler that semi-soft plastic optical fibre is set in device, hydraulic detention time (HRT, Hydraulic Retention Time) setting For 10 hours (hour), the organic pollution that every cubic metre of pool volume is born daily was 0.4 kilogram.
The sewage discharged from ABR ponds water outlet enters MABR ponds, and aerobic reaction is carried out in MABR ponds, and HRT is 16 hours, Aeration pressure is 0.1 megapascal (MPa), and the organic pollution that every cubic metre of pool volume is born daily is 0.3 kilogram.It will by pumping The part effluent recycling of MABR ponds water outlet carries out anti-nitration reaction in ABR ponds, improves the removal rate of nitrogen, flow back to ABR ponds Than being 2.
The part water outlet of MABR ponds water outlet enters surface streaming artificial swamp under the effect of gravity, removes in sewage Nitrogen, phosphorus, SS, organic matter and pathogen etc., artificial wetland effluent are emitted into earth's surface or for agricultural irrigations.Surface streaming people Work wetland length-width ratio is about 10:1, wetland bed to be formed by two layers, surface layer soil layer, thickness 0.4 meter (m), gravel layer laying depth 0.2m, Overall thickness 0.6m, in artificial swamp, emergent aquactic plant plantation reed, canna, rush etc., fluitante plantation water hyacinth, Duckweed etc., HRT are 40 hours, and the organic pollution that every cubic metre of pool volume is born daily is 0.2 kilogram.
Artificial wetland effluent water quality is COD 36.8mg/L, BOD5 8.6mg/L、NH3-N 5.9mg/L、TP 1.5mg/L。
To sum up, the rural domestic sewage treatment system of the utility model can be effectively at domestic sewage in rural areas Reason, technology requirement is low, simple in structure, floor space is small, at low cost, adjustment is flexible, treatment effeciency is high, high treating effect, manually The water outlet of wetland can be used for discharging earth's surface or agricultural irrigation etc..
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model, Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of rural domestic sewage treatment system, which is characterized in that including:Sequentially connected grid, regulating reservoir, anaerobic pond, Aerobic tank and artificial swamp,
Wherein, the grid is connect with sewage pipe, for intercepting suspension and the floating pollutants in the sewage in the sewage pipe, The regulating reservoir is for adjusting the water quality and water of sewage discharged from the grid, and the sewage of the regulating reservoir discharge is described Anaerobic reaction is carried out in anaerobic pond, the sewage of the anaerobic pond discharge carries out aerobic reaction in the aerobic tank, described aerobic The sewage of pond discharge enters the artificial swamp, and the artificial swamp removes nitrogen in the sewage of the aerobic tank discharge, phosphorus, has It is one or more in machine object, the solid matter of pathogen and suspension in water, the artificial wetland effluent discharge.
2. rural domestic sewage treatment system according to claim 1, which is characterized in that the grid, the regulating reservoir, The water level elevation of the anaerobic pond, the aerobic tank and the artificial swamp is successively from high to low so that sewage is from the sewage Pipe is according to gravity flowing to the artificial swamp.
3. rural domestic sewage treatment system according to claim 1, which is characterized in that the anaerobic pond is anaerobic baffled Plate reaction tank, the anaerobic baffle plate reaction tank include more reaction grid devices, filler fixed bed are both provided in every reaction grid device, Biomembrane is formed on the filler of the filler fixed bed, the sewage of the regulating reservoir discharge passes through the anaerobic baffle plate successively Every reaction grid device in reaction tank, then flows into the aerobic tank.
4. rural domestic sewage treatment system according to claim 3, which is characterized in that the anaerobic baffle plate reaction tank Middle filler is iron-carbon filling material or medium-soft plastic optical fibre.
5. rural domestic sewage treatment system according to claim 1, which is characterized in that the aerobic tank is film aeration life Object reaction tank, the film aeration and biological reaction tank include membrane module, membrane module frame and air supply system, the membrane module frame peace Loaded on the film aeration and biological reaction tank bottom, for fixing the membrane module, the air supply system passes through pipeline and the film Component connects.
6. rural domestic sewage treatment system according to claim 5, which is characterized in that the membrane module include it is compound in Empty fiber membrane.
7. rural domestic sewage treatment system according to claim 1, which is characterized in that the bottom of pond setting of the regulating reservoir Sludge lifting pump, the sludge lifting pump are used to be deposited in the insoluble suspended solid material discharge of the regulating reservoir bottom.
8. rural domestic sewage treatment system according to claim 1, which is characterized in that the water outlet of the aerobic tank with The water inlet connection of the anaerobic pond, the sewage backflow discharged from the water outlet of the aerobic tank is to the anaerobic pond, described Anti-nitration reaction is carried out in anaerobic pond.
9. rural domestic sewage treatment system according to claim 8, which is characterized in that the dirt discharged from the aerobic tank The reflux ratio that water is back to the anaerobic pond is 1.5~3 times.
10. rural domestic sewage treatment system according to claim 1, which is characterized in that the artificial swamp is surface One kind in streaming artificial swamp, Horizontal subsurface constructed wetland or vertical subsurface flow formula artificial swamp.
CN201721258893.5U 2017-09-28 2017-09-28 A kind of rural domestic sewage treatment system Active CN207468411U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109879536A (en) * 2019-03-12 2019-06-14 段林卓 A kind of domestic sewage in rural areas purification system and purification method
CN110498576A (en) * 2019-09-23 2019-11-26 苏州首创嘉净环保科技股份有限公司 A kind of efficient low-consume domestic sewage of villages and small towns treatment process
CN110803764A (en) * 2019-12-02 2020-02-18 江苏蓝必盛化工环保股份有限公司 Device for treating chemical wastewater by using zero-valent iron reinforced ABR (anaerobic baffled reactor)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109879536A (en) * 2019-03-12 2019-06-14 段林卓 A kind of domestic sewage in rural areas purification system and purification method
CN110498576A (en) * 2019-09-23 2019-11-26 苏州首创嘉净环保科技股份有限公司 A kind of efficient low-consume domestic sewage of villages and small towns treatment process
CN110803764A (en) * 2019-12-02 2020-02-18 江苏蓝必盛化工环保股份有限公司 Device for treating chemical wastewater by using zero-valent iron reinforced ABR (anaerobic baffled reactor)

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