CN108706826A - Two-stage anaerobic-multiphase is percolated rural area decentralized type sewage processing system - Google Patents

Two-stage anaerobic-multiphase is percolated rural area decentralized type sewage processing system Download PDF

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Publication number
CN108706826A
CN108706826A CN201810549940.4A CN201810549940A CN108706826A CN 108706826 A CN108706826 A CN 108706826A CN 201810549940 A CN201810549940 A CN 201810549940A CN 108706826 A CN108706826 A CN 108706826A
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continuous filter
pond
anaerobic
anaerobic pond
water
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Inventor
谌书
张弘弢
王彬
周明罗
张清东
周日宇
刘璟
陈梦君
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Southwest University of Science and Technology
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Southwest University of Science and Technology
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Priority to CN201810549940.4A priority Critical patent/CN108706826A/en
Publication of CN108706826A publication Critical patent/CN108706826A/en
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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
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/007—Modular design
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • 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
    • 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
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
    • 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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used

Abstract

The invention discloses a kind of two-stage anaerobic-multiphases to be percolated rural area decentralized type sewage processing system, including sequentially connected pretreatment pool, the first anaerobic pond, the second anaerobic pond, non-irrigated phase continuous filter, water phase continuous filter, efficient continuous filter, early warning pond and grass planting ditch；Pretreatment pool is provided with water pump, and water pump will drain into the first anaerobic pond after the sewage lifting in early warning pond by pipeline in a manner of drop；By connection through walls, perforated wall trepanning is located at wall lower part for first anaerobic pond and the second anaerobic pond, and the sewage in the first anaerobic pond flows into the second anaerobic pond from trepanning；Second anaerobic pond, non-irrigated phase continuous filter, water phase continuous filter, efficient continuous filter, early warning pond and grass planting ditch height reduce successively, and sewage drains into next stage successively since the second anaerobic pond with overflow type.The present invention is high to organic matter treatment effeciency, denitrogenation dephosphorizing is low with the with obvious effects of removing heavy metals, capital construction at low cost, strong operability, operational and administrative expenses is removed, and is suitable for the low-cost processes of rural area decentralized type sewage.

Description

Two-stage anaerobic-multiphase is percolated rural area decentralized type sewage processing system
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of two-stage anaerobic-multiphase diafiltration rural area distributing is dirty Water treatment system.
Background technology
China belongs to national in world development, and ensemble average economic level still is below the prosperity state of the world of the United Nations's announcement The average economic level of family, and there are larger differences for different zones, coastal region in east China economic level is compared with middle part, western hair It reaches, since China's rural infrastructure development falls behind, most rural areas are set without foundation or imperfect pipe network It applies and sewage treatment plant, current China's rural dispersed pollutant mainly taking excrement methane-generating pit, artificial swamp, Algal The processing modes such as the pool, integrated purifying equipment.With Yan Yanan, Zhang Lieyu etc. is by taking the surrounding rural of Shanghai as an example, by originalization Manure pit carries out structural improvement, builds three-grid septic tank, realizes the technical combinations of grid, collecting-tank, each portion's function of regulating reservoir, cooperation Efficiency for Soil Aquifer Treatment so that effluent quality significantly improves, and operability is strong, realizes low cost operation, has good popularization city Field and practical value.With Zhang Yingying, fourth is that the people are equal by testing gravel, the composite vertical current artificial wetland that zeolite is filter bed, is ground Study carefully the result shows that, which can establish unique aerobic-anaerobic-anaerobic zone, there is very high removal rate to all kinds of nitrogen forms.With Huang Xiangfeng, pond gold duckweed etc. by Taihu Lake domestic sewage in rural areas take High-Rate Algae Pond handle studies have shown that the system pair The average removal rate of COD, TN, TP respectively reach 70%, 90%, 50%, and the removal effect on the algae pool is by natural conditions (day According to, temperature) seriously affect；With Guo Yingqing, the group technology with efficient fungus-algae pond and aquatic pond of the researchs such as Liu Qun, examination The different residence times is tested to measure and judge that the phosphor-removing effect of the technique, the average removal rate of system reach 79.5%.With Yang little Jun, Jia Haitao etc. show combined biofilm reactor intermittently to locate to the experimental study of combined biofilm reactor Reason is that the method for operation may make COD, NH by adjusting the other influences factor such as anaerobism and aerobic residence time, dissolved oxygen content3- N, TN, TP average removal rate are respectively 79.1%, 83.5%, 58.0%, 81.3%, and form the netted food chain of high nutrition grade Structure.
Since the developed countries such as America and Europe economic level is higher, rural infrastructure auxiliary construction so that its distributing pollutes It can preferably be handled, while also provide good reference precedent for countries in the world.By the secondary industrial revolution of eighties of last century Afterwards, America's economy obtains great development so that it is rapidly reached Integration of Urban-rural Areas, and city uses same ring with rural area The pattern of border preservation law, central, each state government found different funds, and are carried out energetically to decentralized type sewage processing item and research Policy is encouraged and financial support, establishes High-Rate Algae Pond system, using the symbiosis of algae in stabilization pond and mushroom, fully turns Change and remove major pollutants index, includes mainly autonomous mode, protocol mode, Licensing Model, operational mode.Japan exists Eighties of last century costs the fast regular bus of America's economy high speed development so that national economy level greatly improves, due to by territory face There are more unique mode in the limitation of product, natural resources and terrain, Japan to environmental protection and the utilization of resources, early in With regard to carrying out Rural Waste Water governing project, for the processing of rural area decentralized type sewage, it is to dominate, based on family to establish with government within 1977 Body and third party's qualification run the pattern mutually coordinated, mainly by modes such as purification tank, village pumping equipment and collective's treatment facilities Composition.Seoul, South Korea university is directed to rural dispersed waste water control, it is believed that wastewater reuse approach pattern institute is established in distributing area Need cost excessively high, proposition in a manner of simple, easily operated artificial wetland treatment, pass through build soil --- plant combined place Reason system, and system is improved and is upgraded and proposes SNR engineering technology, country sewage is handled in the way of inexpensive.Australia is big The research tissue (CouncilforScientificandIndustrialResearch O) of Leah proposes " holding in the palm Fil using land system as core processing unit for country sewage (FILTER) " pattern is acted on by the self purification in soil and the sorption enhanced of crops using sewage irrigation, is reduced pollution Object content, then excluded by pre-buried pipe network facilities by purifying diafiltration sewage up to standard.French scientific research personnel is by establishing earthworm Rural domestic waste is effectively treated in earthworm ecological filter, is movable monomer with earthworm, enhances the permeability of soil and improves soil Decomposition and inversion ability, COD, TN, TP, SS average removal rate respectively may be about 85%, 60%, 50%, 88%.
Since the principle of rural domestic waste processing has a requirements such as operability, simple-to-maintain, low cost operation, it is above this A little different process, some have the improvement of China's distributing pollutant and can borrow value, and have certain generalization.But it examines The development for considering China's economic level differs, some techniques and improper use, needs to set up the dispersion for adapting to China as early as possible Formula pollutant process technique.
Invention content
In order to solve problems in the prior art, an embodiment of the present invention provides a kind of two-stage anaerobic-multiphase diafiltration rural areas point Dissipate formula sewage disposal system.The technical solution is as follows：
On the one hand, a kind of two-stage anaerobic-multiphase is percolated rural area decentralized type sewage processing system, including sequentially connected pre- place Manage pond, the first anaerobic pond, the second anaerobic pond, non-irrigated phase continuous filter, water phase continuous filter, efficient continuous filter, early warning pond and grass planting ditch；Institute It states pretreatment pool and is provided with water pump, the water pump will be drained into after the sewage lifting in the early warning pond in a manner of drop by pipeline First anaerobic pond；By connection through walls, the perforated wall trepanning is located at wall for first anaerobic pond and the second anaerobic pond Lower part, the sewage in first anaerobic pond flow into second anaerobic pond from the trepanning；Second anaerobic pond, drought are mutually oozed Filter tank, water phase continuous filter, efficient continuous filter, early warning pond and grass planting ditch height reduce successively, and sewage is opened from second anaerobic pond Begin to drain into next stage successively with overflow type.
Further, the pretreatment tank is provided with grid, and the grid side connects water inlet system, other side setting sieve Net.
Further, first anaerobic pond and second anaerobic pond are mounted on floating stuffing, the floating stuffing Adhere to for microorganism；The floating stuffing grain size is 10-15mm, and density is 0.8-1g/cm after biofilm3, the floating stuffing Dosage is the 30%~50% of pond body volume.
Further, choking wall, the choking wall bottom are both provided in the non-irrigated phase continuous filter and the water phase continuous filter Water hole is arranged in portion.
Further, bottom of pond is from the top down in the non-irrigated phase continuous filter, the water phase continuous filter and the efficient continuous filter It is laid with soil horizon, mixed filler layer and supporting layer successively.
Further, mixed filler layer includes one or more of haydite, zeolite and lime stone；The supporting layer includes Gravel；Sawdust, the volume ratio of the sawdust and soil are added in the soil horizon of the drought phase continuous filter and the efficient continuous filter It is 1:2.
Further, soil horizon, mixing are filled out in the non-irrigated phase continuous filter, the water phase continuous filter and the efficient continuous filter The height of the bed of material and supporting layer ratio is 1:(0.8-1.2):(0.8-1.2).
Further, in the water phase continuous filter, cultured fishes, shellfish in the water body, the soil horizon kind Plant plant.
Further, the water outlet of the water phase continuous filter is connected with braiding channel, and the braiding channel reconnects water distribution pipeline, The water distribution pipeline is arranged above the efficient continuous filter, and the water distribution pipeline is arranged in groined type.
Further, the efficient continuous filter bottom of pond is provided with collector pipe, and sewage passes through described in the efficient continuous filter Collector pipe drains into the early warning pond, and the collector pipe is arranged in groined type.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：The two-stage anaerobic of the present invention-multiphase diafiltration Rural area decentralized type sewage processing system introduced plant and animal build the food chain and food web of more trophic levels, form animal-plant The complex system of object-filler-microorganism, high, denitrogenation dephosphorizing and with obvious effects, the base that remove removing heavy metals to organic matter treatment effeciency It builds that at low cost, strong operability, operational and administrative expenses are low, is suitable for the low-cost processes of rural area decentralized type sewage.It is final to realize respectively While kind of pollutant high-efficient purification and beautification of landscape target, by rice cultivation, water spinach and oenanthe stolonifera, launch carp, crucian, The shallow waters fingerling such as Tilapia mossambica, can create certain economic benefit.
Description of the drawings
The technical solution in example is applied in order to illustrate more clearly of the present invention, required use in being described below to embodiment Attached drawing be briefly described.
Fig. 1 is the vertical view of two-stage anaerobic of the present invention-multiphase diafiltration rural area decentralized type sewage processing system embodiment；
Fig. 2 is the side view of two-stage anaerobic of the present invention-multiphase diafiltration rural area decentralized type sewage processing system embodiment.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.
Embodiment
As illustrated in fig. 1 and 2, two-stage anaerobic of the invention-multiphase is percolated rural area decentralized type sewage processing system, including successively The pretreatment pool 1 of connection, the first anaerobic pond 2, the second anaerobic pond 3, non-irrigated phase continuous filter 4, water phase continuous filter 5, efficient continuous filter 6, Early warning pond 7 and grass planting ditch (being not drawn into figure).
Rural scattered domestic sewage is drained into pretreatment pool 1 by collecting, carries out preliminary oil removal, removal of impurities and homogeneous Change is handled, to mitigate the processing load of follow-up water treatment unit.Pretreatment pool 1 is provided with grid (being not drawn into figure), grid by Grizzly bar and transverse ribs composition, grid side connect water inlet system, and grid other side is arranged sieve, can retain most Sundries and partial suspended thing are floated, the processing load of subsequent processing is reduced, ensures the normal operation of subsequent processing facility.Locating in advance Reason 1 end of pond is provided with centrifugal water pump, and centrifugal water pump is connected with sewage conveying tube, and the water outlet of sewage conveying tube is higher than the One anaerobic pond 2.Centrifugal water pump after sewage lifting to certain elevation, will enter the first anaerobic pond 2 in the form of drop, whole to be System flows in unit later all in the form of flow by gravity, no longer consumes other energy, is exposed without using machinery in whole system Gas reoxygenation, mainly using air reaeration and drop reoxygenation.
First anaerobic pond 2 long 4000mm, wide 4000mm, high 3000mm, second anaerobic pond 3 long 2000mm, wide 4000mm are high 3000mm.It is separated with perforated wall 8 between first anaerobic pond 2 and the second anaerobic pond 3, and in 8 lower part trepanning of perforated wall for sewage stream Dynamic, sewage drops on 2 top of the first anaerobic pond intakes, and flows through 8 lower part of perforated wall, then be discharged from 3 top of the second anaerobic pond, entirely Flow shape likeness in form of the sewage in the first anaerobic pond 2 and the second anaerobic pond 3 is alphabetical " U ", the water outlet overflow stream of the second anaerobic pond 3 Enter non-irrigated phase continuous filter 4.First anaerobic pond 2 and the second anaerobic pond 3 are mounted on the floating stuffing for being easy to microorganism attachment, and suspension is filled out Material grain size is 10-15mm, and density is 0.8-1g/cm after biofilm3, floating stuffing dosage is the 30%~50% of pond body volume. Sewage total residence time in the first anaerobic pond 2 and the second anaerobic pond 3 is 5d.
By the second anaerobic pond 3, treated that sewage drops under the effect of gravity, and gravity flow enters at non-irrigated phase continuous filter 4 Reason.
4 long 8000mm of non-irrigated phase continuous filter, wide 4000mm, filler effective height are 1200mm, are followed successively by height from top to bottom It is the soil horizon, mixed filler layer and supporting layer of 400mm, wherein using the zeolite of grain size 0.5-0.7mm as mixed fillers Layer, using the rubble of grain size 8-20mm as supporting layer, available depth 1000mm.Choking wall 9 is arranged in 4 middle part of non-irrigated phase continuous filter, Artificially pond body for being separated into two 4000mm × 4000mm by non-irrigated phase continuous filter 4 reserves apopore connection in 9 bottom of choking wall Two parts, sewage flow downward from pond body one, enter pond body two by choking wall 9 after soil, zeolite and rubble, Uplink again passes through rubble, zeolite and soil in pond body two, realizes the 4 top drop water inlet of non-irrigated phase continuous filter, top overflow water outlet Effect.
By treated for non-irrigated phase continuous filter 4, sewage drops under the effect of gravity enters water phase continuous filter 5, water phase continuous filter The effective height of 5 long 8000mm, wide 4000mm, filler are 800mm, available depth 900mm.Water phase continuous filter 5 from top to bottom according to Secondary is the supporting layer of water body, the soil horizon of height 200mm, the mixed filler layer of height 300mm and height 300mm, wherein is used For the zeolite of grain size 0.5-0.7mm as mixed filler layer, planting plants between water body and soil horizon put fish, loach, crust in a suitable place to breed The animals such as class.Choking wall 9 is arranged in 5 middle part of water phase continuous filter, and water phase continuous filter 5 is divided into two 4000mm × 4000mm pond bodies, Apopore is reserved in 9 bottom of choking wall and is connected to two parts, and sewage flows downward from pond body one, passes through soil, zeolite and broken Pond body two is entered by choking wall 9 after stone, uplink again passes through rubble, zeolite and soil in pond body two, realizes water phase diafiltration The effect of the drop water inlet of 5 top of pond, top overflow water outlet.
The water outlet of water phase continuous filter 5 is connected with braiding channel, and by treated for water phase continuous filter 5, sewage overflow enters collection Water channel, the braiding channel other side connect water distributor 10, and water distributor 10 is arranged above the efficient continuous filter 6, is pressed along water (flow) direction It is laid according to " well " font of 1000 × 1000mm, covers most of region of efficient continuous filter 6, keep the water outlet in braiding channel uniform It is distributed in 6 body major part region of efficient continuous filter.Efficient 6 long 8000mm of continuous filter, the effective height of wide 4000mm, filler are 800mm, be followed successively by from top to bottom the soil horizon of height 200mm, be highly 300mm mixed filler layer and height be 300mm's Supporting layer, flow flow successively through each layer, wherein using the zeolite of grain size 0.5-0.7mm as mixed filler layer.Efficiently diafiltration bottom Portion is laid with collector pipe, corresponding with water distributor 10, and collector pipe is also in that " well " font arranges, and treated, and water outlet is collected through collector pipe, It imports in early warning pond 7.
Effluent quality and the dirt of rural area decentralized type sewage processing can be monitored in early warning pond 7 with the growth conditions of animals and plants Water processing establishment operation conditions, early warning fish select medaka, the aquatic planktonic algae of early warning Plants selection, including Chlorophyta, silicon Algae door, Cyanophyta it is one or more.Water outlet in early warning pond 7, which can be irrigated with reuse or be discharged into grass planting ditch, enters nature ring Border.
In non-irrigated phase continuous filter 4, water phase continuous filter 5 and efficient continuous filter 6, mixed filler layer can also select in addition to zeolite With the one or several kinds in haydite or lime stone, supporting layer mainly selects gravel.Non-irrigated phase continuous filter 4 and efficient continuous filter 6 With volume ratio 2 in soil horizon:1 ratio mixes sawdust, and slowly degradation can provide length to sawdust for nitrification/denitrification in the soil The carbon source of phase, can also improve the gas permeability of soil, add several earthworms in the soil, can promote organic substance in soil Decomposition and C, N cycle, Soil ventilation oxygenation capacity can be improved, the synergistic effect of earthworm-microorganism can also be formed, Promote the degradation of microbe matter.Non-irrigated phase continuous filter 4, water phase continuous filter 5 and efficiently soil horizon, mixing in continuous filter 6 The height of packing layer and supporting layer ratio is 1:(0.8-1.2):(0.8-1.2).
The larger plant such as reed, calamus, canna and rush, well developed root system, resistant energy are planted in non-irrigated phase continuous filter 4 Power is strong, good purification, the wetland plant with certain landscape value.
Water phase continuous filter 5 include botanical system and aquatic animal system, wherein botanical system based on emergent aquactic plant, with Supplemented by floating plant and submerged plant, floating plant includes mainly the one or more of green alga, diatom, cyanobacteria, and submerged plant is Hornwort and hydrilla verticillata；Aquatic animal system includes fish and zoobenthos, fish stocking to consider based on feeding fish silver carp flathead, For auxiliary with the fish medaka of early warning water quality, zoobenthos puts loach, bivalves and shell-fish in a suitable place to breed.
Mainly plantation plant is short and small, well developed root system but root are deeply shallower, plant with certain economic value for efficient continuous filter 6 Object, including water spinach and oenanthe stolonifera.
The present embodiment is according to design water 15m3/ d, design water conservancy load are 0.15m/d, and the design residence time is 5 days.
The present invention realizes the purification of sanitary sewage by artificial combination Water condition technique, removes COD in sewage, total Phosphorus, total nitrogen and nitrate nitrogen.This example mainly has studied haydite and zeolite as being filled primarily with matrix, by haydite and zeolite Laboratory physical and chemical property determining, microorganism colonization experiment, biofilm front and rear surfaces Electronic Speculum observation show both fillers all have than The characters such as surface area is big, rough surface, porosity are high, microorganism easily adheres to and biomass is big, not easily run off, can be used as nitre Change/denitrifying microorganism excellent carrier, can significantly increase nitrification/denitrification efficiency.It is removed for ammonia nitrogen in sewage difficulty The problem of, zeolite has good adsorptivity to ammonia nitrogen.Meanwhile a certain proportion of lime stone, stone are additionally added in mixed filler layer The Ca of lime stone2+Insoluble phosphate can be generated with the P in sewage deposit, reach relatively good to one of P in sewage Removal effect.Lime stone and zeolite can also form zeolite --- and the collaboration system of lime stone, zeolite can activate lime stone table The phosphate that face deposits so that the phosphate of this part slow release can be utilized by plant and microbial degradation for a long time, The long-term function of keeping dephosphorization.
(1) present invention, good denitrogenation and dephosphorization effect efficient to sanitary sewage disposal, processing cost be low, standard water discharge discharge Or be used for agricultural irrigation, pretreatment system, system for anaerobic treatment and ecological treatment system are combined, introduce industrial crops and Economic fish, not only alleviated domestic sewage in rural areas influences simultaneously but also can create certain economy to imitate to Ecological Environment Benefit also has certain positive effect for promoting the present invention.
(2) there is specific purpose, plant includes the reed planted in non-irrigated phase continuous filter, Chang in the selection of plant and animal The water spinach planted in the rice planted in the typical wetland plants such as Pu, canna and rush, water phase continuous filter, efficient continuous filter And Chinese celery, both in while can guarantee removal effect, ensure that effluent quality is up to standard, while introducing earthworm, loach, bivalves and crust The animals such as class form the microecosystem of animal-plant-microorganism, preferable degradation can be also obtained to organic matter difficult to degrade Effect.
(3) present invention introduces the early warning animals such as the early warning such as green alga, diatom plant and medaka, using biology to water pollution The different stress reactions of degree carry out biological monitoring to going out aqueous condition, can more rapid directly reaction system operating status, be The important supplement of physics and chemical monitoring.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (10)

1. two-stage anaerobic-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that including sequentially connected pretreatment Pond, the first anaerobic pond, the second anaerobic pond, non-irrigated phase continuous filter, water phase continuous filter, efficient continuous filter, early warning pond and grass planting ditch；It is described Pretreatment pool is provided with water pump, and the water pump will drain into institute after the sewage lifting in the early warning pond by pipeline in a manner of drop State the first anaerobic pond；By connection through walls, the perforated wall trepanning is located under wall for first anaerobic pond and the second anaerobic pond Portion, the sewage in first anaerobic pond flow into second anaerobic pond from the trepanning；Second anaerobic pond, drought are mutually percolated Pond, water phase continuous filter, efficient continuous filter, early warning pond and grass planting ditch height reduce successively, and sewage is since second anaerobic pond Next stage is drained into successively with overflow type.
2. two-stage anaerobic as described in claim 1-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that institute It states pretreatment pool and is provided with grid, the grid side connects water inlet system, and sieve is arranged in the other side.
3. two-stage anaerobic as claimed in claim 2-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that institute It states the first anaerobic pond and second anaerobic pond is mounted on floating stuffing, the floating stuffing adheres to for microorganism；It is described Floating stuffing grain size is 10-15mm, and density is 0.8-1g/cm after biofilm3, the floating stuffing dosage is pond body volume 30%~50%.
4. two-stage anaerobic as claimed in claim 3-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that institute It states and is both provided with choking wall in non-irrigated phase continuous filter and the water phase continuous filter, water hole is arranged in the choking wall bottom.
5. two-stage anaerobic as claimed in claim 4-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that institute It states bottom of pond in non-irrigated phase continuous filter, the water phase continuous filter and the efficient continuous filter and is laid with soil horizon, mixing successively from the top down Packing layer and supporting layer.
6. two-stage anaerobic as claimed in claim 5-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that mixed It includes one or more of haydite, zeolite and lime stone to close packing layer；The supporting layer includes gravel；The drought phase continuous filter With add sawdust in the soil horizon of the efficient continuous filter, the volume ratio of the sawdust and soil is 1:2.
7. two-stage anaerobic as claimed in claim 6-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that institute State the height of soil horizon, mixed filler layer and supporting layer in non-irrigated phase continuous filter, the water phase continuous filter and the efficient continuous filter Than being 1:(0.8-1.2):(0.8-1.2).
8. two-stage anaerobic as claimed in claim 7-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that institute It states in water phase continuous filter, cultured fishes, shellfish in the water body, the soil horizon planting plants.
9. two-stage anaerobic as claimed in claim 8-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that institute The water outlet for stating water phase continuous filter is connected with braiding channel, and the braiding channel reconnects water distribution pipeline, and the water distribution pipeline setting exists Above the efficient continuous filter, the water distribution pipeline is arranged in groined type.
10. two-stage anaerobic as claimed in claim 9-multiphase is percolated rural area decentralized type sewage processing system, which is characterized in that institute It states efficient continuous filter bottom of pond and is provided with collector pipe, sewage drains into the early warning in the efficient continuous filter by the collector pipe Pond, the collector pipe are arranged in groined type.
CN201810549940.4A 2018-05-31 2018-05-31 Two-stage anaerobic-multiphase is percolated rural area decentralized type sewage processing system Pending CN108706826A (en)

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Application publication date: 20181026