CN107529524A - A kind for the treatment of method for rural sewage and system - Google Patents

A kind for the treatment of method for rural sewage and system Download PDF

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Publication number
CN107529524A
CN107529524A CN201710923667.2A CN201710923667A CN107529524A CN 107529524 A CN107529524 A CN 107529524A CN 201710923667 A CN201710923667 A CN 201710923667A CN 107529524 A CN107529524 A CN 107529524A
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sewage
bio
treatment
tank
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肖润林
吴金水
齐兰贵
刘锋
肖天齐
戴岳洋
李裕元
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Jiangmen Huanyue Environmental Protection Technology Co ltd
Institute of Subtropical Agriculture of CAS
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Jiangmen Huanyue Environmental Protection Technology Co ltd
Institute of Subtropical Agriculture of CAS
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Abstract

The invention discloses a kind for the treatment of method for rural sewage and system,Sanitary sewage passes through grid pond successively by pipeline,3 grades of front end regulations and bio-matrix clarifier-tank,6 grades of ecological wetlands and end intensive treatment pond,In 3 grades of front end regulations and bio-matrix clarifier-tank addition straw and microbial bacterial agent,The underfill clay of 6 grades of ecological wetlands simultaneously sprays microbial bacterial agent,Plant green watermifoil,End intensive treatment pond is followed successively by water passage from bottom,Function unimolecule nanometer composite layer,Rough sand layer etc.,This method and system do not need electric power,Maintenance management is simple and convenient,COD in effective decontrol domestic sewage in rural areas,Nitrogen,The pollutants such as phosphorus,Outlet water at tail end stability contorting is below national domestic sewage treatment one-level A standard index values,Suitably applied in vast Subtropical hilly regions,Wetland maintenance process can produce certain economic benefit.

Description

A kind for the treatment of method for rural sewage and system
Technical field
The invention belongs to agricultural environment field, and in particular to a kind for the treatment of method for rural sewage, also relate to one Kind domestic sewage in rural areas ecological management system, be particularly suitable for use in subtropical zone rural area natural village, gathering ground or small watershed, utilizes village Village corner vacant land (wasteland) handles daily life sewage, realizes the water correction of rural area small pond, streamlet.
Background technology
Improved as life in the countryside is horizontal and inproving living environment, between rural health, the living facilities such as shower house, washing machine Popularization and application, the random discharge of domestic sewage in rural areas causes COD in water body such as the pond in rural area, irrigation canals and ditches, streams, ammonia nitrogen, total Nitrogen, total phosphor contaminant are exceeded serious, cause Rural Water Environment problem outstanding day by day.Domestic sewage in rural areas discharge, scattered cultivation are useless Water discharges and processing of farm products blowdown turns into important agricultural environment pollution source.According to Chinese Ministry of Environmental Protection's survey data, by Chinese village Sanitary sewage discharges 90 liters/man day to town resident per capita, in sanitary sewage COD, total nitrogen and total phosphorus content be respectively 205mg/L, There are 6.4 hundred million villages and small towns populations in 50mg/L and 5.5mg/L meters, current China, and the COD discharged every year, total nitrogen and total phosphorus are up to respectively 431.0th, 105.1 and 11.6 ten thousand tons.It is dirty with city because Rural Water Environment pollution source is complicated, distribution is wide, difficulty of governance is big Water process is compared, it is difficult to which centralized collection, unsuitable using the tupe excessively concentrated, (peasant household is sparsely populated, and pipe network is collected dirty The cost of water is too high).Rural sewage treatment pattern and technology generally can be divided into focus on, decentralized processing and treatment in situ mould Formula.(1) pattern is focused on:The pattern of focusing on is suitable for the villages and small towns having a large population, the density of population is big and sewage yield is big;Adopt Sewage is collected with pipe network, establishes sewage treatment plant, sewage can qualified discharge or reuse after processing.The sewage disposal skill of generally use The active sludge of art and the methods of SBR.(2) decentralized processing pattern:The major technique of domestic and international separated practices sanitary sewage There are wet land treating system, High-Rate Algae Pond technology, artificial wet land treating system and anaerobic methane pool technology etc..(3) traditional original Position sewage disposal system (septic tank) go to denitrogenate, effect is poor in terms of phosphorus compound and pathogenic organisms, be only used as pretreatment and set It is standby to be prepared for further improvement.Promoting rural sewage treatment process now includes aeration tank, biofilter, activated sludge process (SBR) reactor, stabilization pond, artificial swamp etc., three kinds of sewage disposal technologies of frequency of use highest are:Catalytic oxidation, oxidation Ditch and rapid infiltration system.Contact oxidation method is one kind of biomembrance process, and oxidation ditch is using ripe manual system, is quickly oozed Filter is the very low land treatment system of cost.It can be seen that quick diafiltration and oxidation pond technology construction based on natural system, fortune Row cost is relatively low, next to that catalytic oxidation and BAF based on biomembrance process, and SBR, oxygen based on manual system It is all higher to change the cost of erection of ditch and traditional activated sludge process, to consume the chemical agents such as certain electric energy and flocculant, to arrange Personal management safeguards that operating cost is also higher.From treatment effect, shock resistance, operational management, whether save, occupation of land face Product etc. is analyzed, it can be seen that above-mentioned technology all has certain technical problem, and engineering and economical operation input are negative Load is still above user's ability to bear.
Chinese countryside domestic sewage treatment must reduce the yield of pollution from source, absorb foreign advanced experience, will Domestic sewage in rural areas is administered and is combined with circulationization, recycling, is carried out ecology on the spot in small watershed (gathering ground) source and is controlled Less investment, the decentralized that maintenance management is simple, operating cost is low, the new skill of ecological village sanitary sewage disposal are built in reason, research and development Art and new model.
The content of the invention
It is an object of the invention to be the provision of a kind of domestic sewage in rural areas administering method, this method construction input Less, maintenance cost is low, and running is without using any chemical floc (such as aluminium polychloride), between processing system is at different levels Current flow by the drop of landform, do not need electric power naturally, and maintenance management is simple and convenient, and regulation effect is good, effective decontrol The pollutant such as COD, nitrogen, phosphorus (stably reaching national domestic sewage treatment primary standard) in domestic sewage in rural areas, suitably in China Vast Subtropical hilly regions are applied, and feed feeding chicken, duck, goose, pig etc. can be produced after green watermifoil harvesting in ecological wetland, wet Ground maintenance process can produce certain economic benefit.
Another object of the present invention is to be the provision of a kind of rural domestic sewage treatment system, and the systems attempt utilizes The natural height in village corner wasteland (vacant land) is poor, and sanitary sewage is in front end regulation and bio-matrix clarifier-tank, ecological wetland Between natural flow process, effectively using in the clay of filling, rough sand layer, the absorption effluent such as function unimolecule nano composite material Phosphate, the green watermifoil of plantation, canna absorb the nitrogen phosphorus in sewage, and mineralized nitrogen be nitrogen by the microorganism of symbiosis, this System architecture is simple (construction cost only has 1/3rd or so of existing sewage treatment facility), and maintenance management is convenient, processing effect Fruit is stable, and running does not need consumption electric power and flocculant etc., and maintenance operation expense is low (to only have existing sewage treatment facility 1/10th or so).
In order to realize above-mentioned purpose, the present invention uses following technical measures:
A kind for the treatment of method for rural sewage, comprises the following steps:
(1) sand setting and filtration treatment:The bottom of pending domestic sewage in rural areas introducing grid pond, natural subsidence silt, Oil removal and floating object are removed in interception;
(2) front end regulation and bio-matrix purified treatment:Before the surface sewage of grid pond introduces one-level successively by pipeline End regulation and bio-matrix clarifier-tank, the regulation of two level front end and bio-matrix clarifier-tank, the regulation of three-level front end are net with bio-matrix Change the bottom in pond, described one to the regulation of three-level front end and bio-matrix clarifier-tank adds straw respectively and 1-3kg contains nitrification Bacterium and the microbial bacterial agent of denitrifying bacterium, the addition first of straw add 100-150kg for sanitary sewage per ton, later every A straw is added according to the 50% of addition first within 5-7 months, carbon-nitrogen ratio and increase are adjusted by straw and microbial bacterial agent Microbial population, degrade COD;
(3) green watermifoil ecological wetland purified treatment:By the regulation of three-level front end and the surface sewage of bio-matrix clarifier-tank Introduce successively one-level ecological wetland, two level ecological wetland, three-level ecological wetland, level Four ecological wetland, Pyatyi ecological wetland, six grades The bottom of ecological wetland, the bottom of described one to six grade of ecological wetland fill 20-60cm clays and keep 25-90cm respectively Water depth, the microbial bacterial agent 1-2kg containing nitrifier and denitrifying bacterium is sprayed, and plant green watermifoil, pass through green watermifoil Mineralized nitrogen is by absorbed nitrogen phosphorus, nitrifying microorganisms, denitrifying microorganism, anaerobic ammonia oxidation microbiological with green watermifoil symbiosis Nitrogen;
(4) end intensive treatment:Surface sewage through six grades of ecological wetland processing introduces the bottom in end intensive treatment pond, Described end intensive treatment pond is water passage from bottom 10-20cm, and single point of function is alternately filled successively above water passage Sub- nanometer composite layer 20-30cm, rough sand layer 10-20cm, 4-8 layers are filled altogether, pass through function unimolecule nano composite material Phosphate, fine grained suspension in layer absorption effluent, purifying water body, the sewage through processing are arranged from the surface in end intensive treatment pond Go out.
Further, described one-level to the regulation of three-level front end and the design volume of bio-matrix clarifier-tank is sanitary sewage 2-2.5 times of day output.
Further, described one-level is to the 0.7-3 that the design volume of six grades of ecological wetlands is sanitary sewage day output Times.
A kind of rural domestic sewage treatment system, by grid pond by pipeline successively with one-level front end regulation and bio-matrix Clarifier-tank, the regulation of two level front end and bio-matrix clarifier-tank, the regulation of three-level front end are wet with bio-matrix clarifier-tank, one-level ecology Ground, two level ecological wetland, the green ecological wetland of three-level, level Four ecological wetland, Pyatyi ecological wetland, six grades of ecological wetlands, ends are strong Change processing pond connection;Described one-level adds straw respectively with bio-matrix clarifier-tank to the regulation of three-level front end and 1-3kg contains Nitrifier and the microbial bacterial agent of denitrifying bacterium, the addition first of straw add 100-150kg for sanitary sewage per ton, with Afterwards a straw was added every 5-7 months according to the 50% of addition first;Described one-level is to the bottom of six grades of ecological wetlands 20-60cm clays are filled respectively and keep 25-90cm water depths, spray the microbial bacterial agent 1- containing nitrifier and denitrifying bacterium 2kg, and plant green watermifoil;The bottom in described end intensive treatment pond is water passage, is replaced successively above water passage Function unimolecule nanometer composite layer 20-30cm, rough sand layer 10-20cm are filled, fills 4-8 layers altogether.
Further, height fall, water are sequentially formed from the grid pond of front end to end intensive treatment pond in processing system Stream flows naturally by the drop of landform.
Further, described one-level to the regulation of three-level front end and the frame of bio-matrix clarifier-tank is reinforced concrete knot Structure.
Further, described one-level to the frame of six grades of ecological wetlands is cement brick mix structure, and base impervious is handled.
Compared with prior art, the present invention has advantages below and effect:
1. there is certain novelty on administering method:Improvement for domestic sewage in rural areas has had a lot at present Method, but based on mainly being administered with engineering measure, using technologies such as waterfall gas, anaerobism, biomembrane, flocculations.The present invention is for sub- heat The characteristics of water more with hills area, be main technology essential factor using green watermifoil ecological wetland, passes through green watermifoil and grows interception suction Receive the nitrogen phosphorus in water body, particularly green watermifoil and nitration denitrification microorganism, anaerobic ammonia oxidation microbiological symbiosis, by water body Mineralized nitrogen is nitrogen purifying water body, and green watermifoil is re-used as feed resource and recycled.
2. construction cost is low:The most important construction cost of the present invention includes pipe network system and processing system two parts, handles System includes 3 grades of sewage front end regulations and bio-matrix clarifier-tank, 6 grades of green watermifoil ecological wetlands and 1 grade of end intensive treatment Pond, between adding up to ten thousand yuan of cost 8-15, villages and towns in rural areas, Zu Deng collectives of village can receive.
3. operating cost is low, simple to operate:Majority needs electric power equal energy source in existing sanitary sewage disposal technology, and this place Reason method mainly utilizes the driving force of nature gradient, and water body is in front end regulation and bio-matrix clarifier-tank, green watermifoil wetland Gravity flow purification, it is not necessary to be aerated, it is not necessary to add chemical floc etc., it is not required that professional maintenance management troop.Usual Daily management and maintenance is that ecological wetland needs weeds (annual 4-5 times) of mowing and remove, and front end regulation is handled with bio-matrix Pond needs to add straw (interval addition in 5-7 months 1 time), operates very simple.A set of rural domestic sewage treatment system 1 year Operational and administrative expenses about 1000-3000 member.
4. regulation effect is good:This treatment method for rural sewage front end adjusts dirty with the regulation life of bio-matrix clarifier-tank Carbon-nitrogen ratio, acid-base value and microbial population in water, intercepting fine particulates and some influences the harmful substance of plant growth (such as oil Fat etc.), degraded COD.Green watermifoil absorbed nitrogen phosphorus in multi-stage ecological wetland, it is attached to the nitration denitrification of plant surface microorganism Effect effectively the pollutant such as the ammonia nitrogen of decontrol polluted-water, phosphorus, end polymer adsorption clarifier-tank can effectively adsorb polluted-water Phosphorus and pigment, in the draining of end major pollutants content can stablize be less than《People's Republic of China's city domestic sewage discharge Standard (GB18918-2002)》One-level Con trolling index value (table 1).
5. recycling:The green watermifoil of ecological wetland plant is a kind of high-quality feed resource, crude protein, crude fat, thick The nutritional ingredient such as fiber, vitamin, amino acid, mineral matter equal size height (being shown in Table 2,3), quality and clover, clover are suitable, often Hectare ecological wetland can produce green fox-brush 150 tons (dry weights), and in southern area, its yield is 6-8 times of clover and corn, using the skill Art administers domestic sewage in rural areas and (green watermifoil is produced as chicken, duck, goose and pig feed and ecology is supported using green watermifoil fodder Grow method and applied for patent in addition, application number is 201510653646.4 respectively, 201510653519.4, 201510654125.0th, 201710684543.3,201710684544.8), dependence of the breeding feed to high-quality arable land can be reduced, The grain security for solving China is of great significance.
Brief description of the drawings
Fig. 1 is domestic sewage processing system schematic diagram of the present invention;
Fig. 2 is domestic sewage processing system water (flow) direction floor map of the present invention;
Fig. 3 is domestic sewage processing system water (flow) direction schematic cross-section of the present invention;
Wherein:A- grid ponds, the regulation of B- one-levels front end and bio-matrix clarifier-tank, the regulation of C- two levels front end and biology Matrix clarifier-tank, the regulation of D- three-levels front end and bio-matrix clarifier-tank, E one-level ecological wetlands, F- two level ecological wetlands, G- Three-level ecological wetland, H- level Four ecological wetlands, I- Pyatyi ecological wetlands, six grades of ecological wetlands of J-, K- ends intensive treatment Pond.
Embodiment
Embodiment 1:
Rural area of the present invention can be illustrated exemplified by one group of cities and towns Division A League Matches of Spanish Football village demonstration project by Jiangmen City of Guangdong Province Xinhui District Domestic sewage processing system and ecological treatment method.About 1.5 square kilometres of Division A League Matches of Spanish Football village, 6 villager group, the life at 435 families are dirty Water, it is related to the people of population more than 1776.Domestic sewage in rural areas Ecological Disposal engineering design treatment scale in one group of the village for 20 tons/ My god (collecting the team of village 1, the daily sanitary sewage of people about more than 400).
On March 6th, 2017 starts to construct, and starts 25-27 days in March in front end regulation and bio-matrix pond addition straw, Ecological wetland plants green watermifoil;April 7 is respectively in front end regulation and bio-matrix pond, ecological wetland sprinkling microbial bacterial agent Red bacterium protects No. 6;Started April 20 to access sanitary sewage in toward system, August collection water sample analysis result display system end on the 10th It is real in 2002 promulgations to be below State Environmental Protection Administration for the pollutant load such as COD, ammonia nitrogen, total nitrogen and total phosphorus in wetland discharge water Apply《People's Republic of China's city domestic sewage discharge standard (GB18918-2002)》One-level Con trolling index value.
As shown in figure 1, the rural domestic sewage treatment system described in the present embodiment, including grid pond A, the regulation of one-level front end With bio-matrix clarifier-tank B, the regulation of two level front end and bio-matrix clarifier-tank C, the regulation of three-level front end and bio-matrix clarifier-tank D, one-level ecological wetland E, two level ecological wetland F, three-level ecological wetland G, level Four ecological wetland H, Pyatyi ecological wetland I, six grades Ecological wetland J, end intensive treatment pond K, sequentially formed from the grid pond A of front end to end intensive treatment pond K in processing system Height fall, current flow naturally by the drop of landform, specific as follows:
Grid pond A:Grid pond frame is reinforced concrete pool construction, and design specification is long 300cm (length) × 150cm (width) × 150cm (depth), pending domestic sewage in rural areas introduces grid pond by pipe network, with the bulk such as catching rubbish suspension and drift Float, the rubbish and the silt of precipitation that periodic cleaning grid pond intercepts;
One-level front end is adjusted and bio-matrix clarifier-tank B:Pass through grid pond filtering spam and the domestic sewage in rural areas of silt The regulation of one-level front end and bio-matrix clarifier-tank B bottom, this grade of front end regulation and bio-matrix pool side frame are introduced by pipeline For reinforced concrete pool construction, design specification is long 975cm (length) × 300cm (width) × 150cm (depth), fills 2200kg first Straw, while (section's vigor biotechnology is limited in Wuxi by the red bacterium guarantor No. 6 of microbial bacterial agent of the addition containing nitrifier and denitrifying bacterium Company produces) 1kg, added straw 1100kg or so, the major function of this grade of clarifier-tank is regulation life at interval of 5-7 months later Carbon-nitrogen ratio, acid-base value and microbial population in sewage living, and intercept the nuisance of fine particulates and some influence plant growths Matter (such as grease), degraded part COD and ammonia nitrogen;
Two level front end is adjusted and bio-matrix clarifier-tank C:One-level front end is adjusted to be led to bio-matrix purification pool surface water outlet Piping is introduced into the regulation of two level front end and bio-matrix clarifier-tank bottom, and this grade of front end regulation and bio-matrix pool side frame are steel Muscle cement pool construction, design specification are long 975cm (length) × 300cm (width) × 150cm (depth), and straw and microbial bacterial agent are red The addition that bacterium protects No. 6 is same as above;
Three-level front end is adjusted and bio-matrix clarifier-tank D:Two level front end is adjusted to be led to bio-matrix purification pool surface water outlet Piping introduces the regulation of three-level front end and bio-matrix clarifier-tank bottom, and this grade of front end regulation and bio-matrix pool side frame are reinforcing bar Cement pool construction, design specification are long 1000cm (length) × 300cm (width) × 150cm (depth), and straw and microbial bacterial agent are red The addition that bacterium protects No. 6 is same as above;
One-level ecological wetland E:Three-level front end is adjusted introduces one-level life with bio-matrix purification pool surface water outlet by pipeline State wetland bottom, this grade of ecological wetland frame are that cement brick mixes pool construction (bottom carry out Anti-seeping technology), and design specification is 600cm (length) × 500cm (width) × 100cm (depth), wetland underfill 60cm clay (red soil fine earth), plant green watermifoil 15 The red bacterium of microbial bacterial agent is sprayed after it and protects No. 6 1kg, keeping 35cm water depths, (the shallower depth of water of holding is in favor for the treatment of sewage With air contact, increase water body in dissolved oxygen content, promote nitrifier nitration reaction), start after 10 days by front end regulation with Sanitary sewage after the processing of bio-matrix clarifier-tank imports ecological wetland;
Green watermifoil reaches 500-900mg/L high density pollution water in COD contents up to 3000-5000mg/L, ammonia-nitrogen content Grown in body, biomass is up to 10000-12000kg/667m2, it is necessary to substantial amounts of nitrogen and phosphorus are absorbed (per m2The green watermifoil life of wetland The long uptake to nitrogen is about 0.6kg/, and the absorption to phosphorus is about 0.1kg/);With oxygen function is secreted, can dramatically increase by Dissolved oxygen content in polluted-water, so that animal in water and microorganism growth multiply, strengthen the ecological self-purification ability of water body;It is green Mineralized nitrogen can be nitrogen, often with the symbiosis such as nitrifying microorganisms, denitrifying microorganism, anaerobic ammonia oxidation microbiological by watermifoil Year is per m2The green watermifoil of wetland is by can be by 1.0-1.2kg ammonia nitrogens with its symbiotic microorganism nitration denitrification, Anammox etc. The nitrogen being converted into air;
Two level ecological wetland F:The surface water outlet of one-level ecological wetland introduces two level ecological wetland bottom, level life by pipeline State wetland frame is that cement brick mixes pool construction (bottom carry out Anti-seeping technology), and design specification is 600cm (length) × 500cm (width) × 100cm (depth), wetland underfill 20cm clay (red soil fine earth) plant green watermifoil and spray microbial bacteria after 15 days The red bacterium of agent protects No. 6 1kg, keeps 75cm water depths (to keep deeper water depth, profundal zone is difficult to keep anaerobism ring with air contact Border, the anti-nitration reaction in favor of denitrifying microorganism, similarly hereinafter);
The green ecological wetland G of three-level:The surface water outlet of two level ecological wetland enters three-level ecological wetland bottom, the level by pipeline Ecological wetland frame is cement brick mix structure, and design specification is 600cm (length) × 500cm (width) × 100cm (depth), wetland bottom 20cm clays (red soil fine earth) are filled, green watermifoil is planted and microbial bacterial agent No. 6 1kg of red bacterium guarantor is sprayed after 15 days, keep 75cm Water depth;
Level Four ecological wetland H:The surface water outlet of three-level ecological wetland enters level Four ecological wetland bottom, this grade of ecological wetland side Frame is cement brick mix structure, and design specification is long 600cm, wide 500cm, deep 100cm, wetland underfill 20cm clay (red soil Fine earth), plant green watermifoil and microbial bacterial agent No. 6 1kg of red bacterium guarantor are sprayed after 15 days, keep 75cm water depths;
Pyatyi ecological wetland J:The surface water outlet of level Four ecological wetland introduces Pyatyi ecological wetland bottom, level life by pipeline State wetland frame is cement brick mix structure, and design specification is 600cm (length) × 500cm (width) × 100cm (depth), and wetland bottom is filled out 20cm clays (red soil fine earth) are filled, green watermifoil is planted and microbial bacterial agent No. 6 1kg of red bacterium guarantor is sprayed after 15 days, keep 75cm water Depth;
Six grades of ecological wetland L:The surface water outlet of Pyatyi ecological wetland introduces six grades of ecological wetland bottoms, level life by pipeline State wetland frame is cement brick mix structure, and design specification is 500cm (length) × 300cm (width) × 100cm (depth), and wetland bottom is filled out 20cm clays (red soil fine earth) are filled, green watermifoil is planted and microbial bacterial agent No. 6 1kg of red bacterium guarantor is sprayed after 15 days, keep 75cm water Depth;
End intensive treatment pond K:Six grades of ecological wetland surface water outlets introduce the attached bottom of pond portion of end intensive treatment by pipeline, The frame of the processing pond is cement brick mix structure, and design specification is 500cm (length) × 300cm (width) × 150cm (depth), from bottom 20cm is water passage, and work(sorbing material layer (such as Jiangxi Province of in the market purchase is sequentially filled from above under above water passage " the function unimolecule nano composite material " of Pingxiang City Anyuan industry park Ge Feng tech materials Co., Ltd production, model PA02B- 3, graininess) 30cm, rough sand layer (4-6mm thick river sand, similarly hereinafter) 20cm, sorbing material layer 30cm, rough sand layer 20cm, adsorption material Bed of material 30cm, water passage and rough sand layer are designed in the processing pond mainly prevents sorbing material is hardened blocked hydrospace, ensure Pending sanitary sewage internal system flowing it is unobstructed and fully contacted with sorbing material and absorption effluent in phosphate, thin Grain suspension etc., makes water body further purify, and water body is limpider, and the sewage through processing is arranged from the surface in end intensive treatment pond Go out.
Sanitary sewage in system by front end to end (front and rear), by surface to bottom (upper and lower) Uniform Flow, sewage and Bio-matrix (straw and related microorganisms) fully contacts, sewage and with green watermifoil plant and its being attached on green watermifoil Microorganism fully contacts, and in favor of absorption of the green watermifoil to nitrogen phosphorus, conversion of the microorganism to ammonia nitrogen, obtains identical to pollutant Stable treatment effect.
The method that sewage is administered using above-mentioned rural domestic sewage treatment system, is comprised the following steps:
(1) sand setting and filtration treatment:Pending domestic sewage in rural areas introducing grid pond A bottom, natural subsidence silt, Oil removal and floating object are removed in interception;
(2) front end regulation and bio-matrix purified treatment:Before the surface sewage of grid pond introduces one-level successively by pipeline End regulation and bio-matrix clarifier-tank B, the regulation of two level front end and bio-matrix clarifier-tank C, the regulation of three-level front end and bio-matrix Clarifier-tank D bottom, front end regulation are adjusted in sanitary sewage with biomass purified treatment by adding straw and microorganism fungus kind The microbial population such as carbon-nitrogen ratio and acid-base value, increase nitrifying microorganisms, denitrifying microorganism, anaerobic ammonia oxidation microbiological, Intercepting fine particulates and some influences the harmful substance (such as grease) of plant growth, degraded COD, is nitrogen by mineralized nitrogen Gas, gradually purify contaminated water body;
(3) green watermifoil ecological wetland purified treatment:By the regulation of three-level front end and the surface sewage of bio-matrix clarifier-tank One-level ecological wetland E, two level ecological wetland F, three-level ecological wetland G, level Four ecological wetland H, Pyatyi ecological wetland are introduced successively I, six grades of ecological wetland J bottom, by green watermifoil absorbed nitrogen phosphorus, nitrifying microorganisms, denitrification with green watermifoil symbiosis Mineralized nitrogen is nitrogen by microorganism, anaerobic ammonia oxidation microbiological;
(4) adsorption treatment is strengthened in end:Surface sewage through 6 grades of ecological wetland processing introduces end intensive treatment pond N's Work(sorbing material layer (such as Jiangxi Province's Pingxiang City of in the market purchase is alternately filled in bottom, water passage top successively under from upper " the function unimolecule nano composite material " of Anyuan industry park Ge Feng tech materials Co., Ltd production, model PA02B-3, particle Shape) and rough sand layer (4-6mm thick river sand) each layer 2-4, designing water passage and rough sand layer mainly prevents that sorbing material is hardened stifled Filled in hydrospace, ensure that pending sanitary sewage is unobstructed in internal system flowing and fully contacts with sorbing material and adsorbs dirt Phosphate, fine grained suspension etc., make water body further purify in water, and water body is limpider, and the sewage through processing is strengthened from end The surface discharge of processing pond.
August gathers the regulation of one-level front end and bio-matrix clarifier-tank entrance, the regulation of three-level front end and bio-based on the 10th respectively The water sample that the outlet of matter clarifier-tank, one-level export to six grades of ecological wetlands, measure ammoniacal nitrogen, total nitrogen, total phosphorus and COD (COD), as shown in table 1, ammoniacal nitrogen, total nitrogen and total phosphorus and COD content control in system end intensive treatment pond discharge water In State Environmental Protection Administration in 2002 issuing and implementation《People's Republic of China's city domestic sewage discharge standard (GB18918-2002)》Below one-level Con trolling index value.
The domestic sewage in rural areas major pollutants treatment effect of table 1
The green watermifoil of plant of plantation is a kind of high-quality feed resource in ecological wetland, and crude protein content is up to 19-23%, Rich in various vitamins, amino acid, mineral matter etc. (being shown in Table 2,3), can be processed within 15-20 days with partially dehydrated after fermentation through crushing The animal feeds such as pig, ox, sheep, chicken, geese and ducks, fish, for carrying out ecologic breeding.
The green watermifoil Major Nutrient of table 2 and mineral composition content (mg/g dry weights)
Main amino acid composition (mg/g dry weights) in 3 green watermifoil of table
Glutamic acid Lysine Alanine Serine Valine Arginine Tyrosine Asparatate
2.684 0.217 0.399 0.381 0.320 0.344 0.195 0.163

Claims (7)

1. a kind for the treatment of method for rural sewage, it is characterised in that comprise the following steps:
(1)Sand setting and filtration treatment:Pending domestic sewage in rural areas introduces the bottom of grid pond, natural subsidence silt, intercepts Remove oil removal and floating object;
(2)Front end is adjusted and bio-matrix purified treatment:The surface sewage of grid pond introduces one-level front end tune by pipeline successively Section and bio-matrix clarifier-tank, the regulation of two level front end and bio-matrix clarifier-tank, the regulation of three-level front end and bio-matrix clarifier-tank Bottom, described one to the regulation of three-level front end with bio-matrix clarifier-tank add straw respectively and 1-3kg contain nitrifier and The microbial bacterial agent of denitrifying bacterium, the addition first of straw adds 100-150kg for sanitary sewage per ton, later every 5-7 A straw is added according to the 50% of addition first within individual month, carbon-nitrogen ratio is adjusted by straw and microbial bacterial agent and increases micro- life Species group, degrade COD;
(3)Green watermifoil ecological wetland purified treatment:By the surface sewage of the regulation of three-level front end and bio-matrix clarifier-tank successively Introduce one-level ecological wetland, two level ecological wetland, three-level ecological wetland, level Four ecological wetland, Pyatyi ecological wetland, six grades of ecologies The bottom of wetland, the bottom of described one to six grade of ecological wetland fill 20-60cm clays and keep the 25-90cm depth of waters respectively Degree, sprays the microbial bacterial agent 1-2kg containing nitrifier and denitrifying bacterium, and plants green watermifoil, is absorbed by green watermifoil Nitrogen phosphorus, by mineralized nitrogen it is nitrogen with the nitrifying microorganisms, denitrifying microorganism, anaerobic ammonia oxidation microbiological of green watermifoil symbiosis Gas;
(4)End intensive treatment:Surface sewage through six grades of ecological wetland processing introduces the bottom in end intensive treatment pond, described End intensive treatment pond from bottom 10-20cm be water passage, alternately filling function unimolecule is received successively above water passage Nano composite material layer 20-30cm, rough sand layer 10-20cm, 4-8 layers are filled altogether, inhaled by function unimolecule nanometer composite layer Attached phosphate from sewage, fine grained suspension, purifying water body, the sewage through processing are discharged from the surface in end intensive treatment pond.
2. treatment method for rural sewage according to claim 1, it is characterised in that described one-level to three-level front end is adjusted Design volume with bio-matrix clarifier-tank is 2-2.5 times of sanitary sewage day output.
3. treatment method for rural sewage according to claim 1, it is characterised in that described one-level to six grades of ecological wetlands Design volume be 0.7-3 times of sanitary sewage day output.
A kind of 4. rural domestic sewage treatment system, it is characterised in that grid pond(A)Adjusted successively with one-level front end by pipeline With bio-matrix clarifier-tank(B), two level front end regulation with bio-matrix clarifier-tank(C), three-level front end regulation it is net with bio-matrix Change pond(D), one-level ecological wetland(E), two level ecological wetland(F), the green ecological wetland of three-level(G), level Four ecological wetland(H), five Level ecological wetland(I), six grades of ecological wetlands(J), end intensive treatment pond(K)Connection;Described one-level to three-level front end is adjusted Straw is added respectively with bio-matrix clarifier-tank and 1-3kg contains the microbial bacterial agent of nitrifier and denitrifying bacterium, the head of straw Secondary addition is that sanitary sewage per ton adds 100-150kg, adds one according to the 50% of addition first every 5-7 months later Secondary straw;Described one-level fills 20-60cm clays to the bottom of six grades of ecological wetlands and keeps 25-90cm water depths respectively, The microbial bacterial agent 1-2kg containing nitrifier and denitrifying bacterium is sprayed, and plants green watermifoil;Described end intensive treatment pond (N)Bottom be water passage, above water passage successively alternately filling function unimolecule nanometer composite layer 20-30cm, Rough sand layer 10-20cm, 4-8 layers are filled altogether.
5. rural domestic sewage treatment system according to claim 4, it is characterised in that from the lattice of front end in processing system Grid pond(A)Height fall is sequentially formed to end intensive treatment pond (K), current flow naturally by the drop of landform.
6. rural domestic sewage treatment system according to claim 4, it is characterised in that described one-level to three-level front end Regulation and the frame of bio-matrix clarifier-tank are reinforced concrete structure.
7. rural domestic sewage treatment system according to claim 4, it is characterised in that described one-level to six grades of ecologies The frame of wetland is cement brick mix structure, and base impervious is handled.
CN201710923667.2A 2017-09-30 2017-09-30 A kind for the treatment of method for rural sewage and system Pending CN107529524A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109293155A (en) * 2018-10-31 2019-02-01 中徽生态环境有限公司 A kind of biological purification system and its application in wetland park water body treating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109293155A (en) * 2018-10-31 2019-02-01 中徽生态环境有限公司 A kind of biological purification system and its application in wetland park water body treating

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