CN107529525A - 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 PDFInfo
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Landscapes
- Biological Treatment Of Waste Water (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
The invention discloses a kind for the treatment of method for rural sewage and system,Sanitary sewage passes through setting pot successively,Grid pond,3 grades of front end regulations and bio-matrix clarifier-tank,Current wetland,7 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 bottom of current wetland is sequentially filled clay,Fine sand,Cinder,Bentonite,Rubble simultaneously plants canna,The underfill clay of 7 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 is stably less than national domestic sewage treatment one-level A standard Con trolling index values,Suitably applied in vast Subtropical hilly regions,Wetland maintenance process can produce certain economic benefit.
Description
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 of villages and small towns, scattered breeding wastewater 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 villages and small towns resident per capita
Sanitary sewage discharges 90 liters/man day, in sanitary sewage COD, total nitrogen and total phosphorus content be respectively 205mg/L, 50mg/L and
5.5mg/L is counted, and there are a 6.4 hundred million villages and small towns populations in current China, the COD discharged every year, total nitrogen and total phosphorus be up to 431.0 respectively,
105.1 and 11.6 ten thousand tons.Because Rural Water Environment pollution source is complicated, distribution is wide, difficulty of governance is big, with municipal sewage treatment
Compare, it is difficult to centralized collection, be not suitable for using excessively concentrate tupe (peasant household is sparsely populated, pipe network collect sewage into
Ben Taigao).Rural sewage treatment pattern and technology generally can be divided into focus on, decentralized processing and treatment in situ pattern.(1) collect
Middle tupe：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；Received using pipe network
Collect sewage, establish sewage treatment plant, sewage can qualified discharge or reuse after processing.The sewage disposal technology of generally use is active
Sludge and the methods of SBR.(2) decentralized processing pattern：The major technique of domestic and international separated practices sanitary sewage has at wetland
Reason system, High-Rate Algae Pond technology, artificial wet land treating system and anaerobic methane pool technology etc..(3) at traditional sewage in situ
Reason system (septic tank) go to denitrogenate, effect is poor in terms of phosphorus compound and pathogenic organisms, it is into one to be only used as pre-processing device
Step improvement is prepared.Promoting rural sewage treatment process now includes aeration tank, biofilter, activated sludge process (SBR) reaction
Device, stabilization pond, artificial swamp etc., three kinds of sewage disposal technologies of frequency of use highest are：Catalytic oxidation, oxidation ditch and quickly ooze
Filter system.Contact oxidation method is one kind of biomembrance process, oxidation ditch be using ripe manual system, quick diafiltration be cost very
Low land treatment system.It can be seen that quick diafiltration and oxidation pond technology construction, operating cost based on natural system compared with
It is low, next to that catalytic oxidation and BAF based on biomembrance process, and SBR, oxidation ditch and biography based on manual system
The cost of erection of the activated sludge process of system is all higher, to consume the chemical agents such as certain electric energy and flocculant, to arrange personal management
Safeguard, operating cost is also higher.From treatment effect, shock resistance, operational management, whether save, floor space etc.
Analyzed, it can be seen that certain technical problem all be present in above-mentioned technology, and engineering and economical operation input burden 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
Reason, research and development have the characteristics that the decentralized that construction cost is few, maintenance management is simple, operating cost is low, ecological village life are dirty
Water process new technology 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 one-level A standards) 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 system can utilize village
The natural height in village corner wasteland (vacant land) is poor, and sanitary sewage is in front end regulation and bio-matrix clarifier-tank, current wetland, life
Natural flow process between state wetland, it is effectively nano combined using the clay of filling, cinder, bentonite, rubble, function unimolecule
Phosphate in the absorption effluents such as material, the green watermifoil of plantation, canna absorb the nitrogen phosphorus in sewage, and the microorganism of symbiosis is by ammonia
Nitrogen is converted into nitrogen, and the system architecture is simple (construction cost only has 1/3rd or so of existing sewage treatment facility), safeguards
Management is convenient, and treatment effect is stable, and running does not need consumption electric power and flocculant etc., and maintenance operation expense is low (only existing
/ 10th or so of row sewage treatment facility).
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 is handled：Pending domestic sewage in rural areas introduces the bottom of setting pot, natural subsidence silt；
(2) filtration treatment：The surface sanitary sewage of setting pot is introduced into the bottom of grid pond, oil removal and drift are removed in interception
Float；
(3) 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-level adds straw respectively with bio-matrix clarifier-tank to the regulation of three-level front end and 1-2Kg contains nitre
Change the microbial inoculum of micro- life of bacterium and denitrifying bacterium, the addition first of straw adds 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 in sanitary sewage is adjusted by straw and microbial bacterial agent
Nitrogen ratio, acid-base value and microbial population, and fine particulates and grease are intercepted, degrade COD and ammonia nitrogen；
(4) current wetland is handled：Sewage through the regulation of three-level front end and the processing of bio-matrix clarifier-tank is introduced by pipeline
The bottom of current wetland, the bottom of current wetland are sequentially filled clay 18-32cm, fine sand 18-22cm, cinder 18- from bottom to top
42cm, bentonite 18-42cm, rubble 18-32cm, and canna is planted on rubble, using the clay of filling, fine sand, cinder,
Phosphate in bentonite, rubble absorption effluent, the canna of plantation absorb the nitrogen phosphorus in sewage；
(5) green watermifoil ecological wetland processing：The surface sewage of current wetland is introduced into one-level ecological wetland, two level successively
Ecological wetland, three-level ecological wetland, level Four ecological wetland, Pyatyi ecological wetland, six grades of ecological wetlands, the bottom of seven grades of ecological wetlands
Portion, described one-level to seven grades of ecological wetlands in underfill 18-62cm clays and keep 25-90cm water depths respectively, sprinkling
Microbial bacterial agent 1-2kg containing nitrifier and denitrifying bacterium, and plant green watermifoil, by green watermifoil absorbed nitrogen phosphorus, together
When with the nitrifying microorganisms of green watermifoil symbiosis, denitrifying microorganism, anaerobic ammonia oxidation microbiological by mineralized nitrogen be nitrogen；
(6) end intensive treatment：Surface sewage through seven 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, alternately fills function unimolecule above water passage and receives
Nano composite material layer 20-40cm, 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.
Further, described one-level to the regulation of three-level front end and the design volume of bio-matrix clarifier-tank is sanitary sewage
2-3 times of day output.
Further, described one-level is to 2-4 times that the design volume of seven grades of ecological wetlands is sanitary sewage day output.
A kind of rural domestic sewage treatment system, by setting pot by pipeline successively with grid pond, one-level front end regulation with
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, undercurrent
Wetland, one-level ecological wetland, two level ecological wetland, the green ecological wetland of three-level, level Four ecological wetland, Pyatyi ecological wetland, six grades
Ecological wetland, seven grades of ecological wetlands, the connection of end intensive treatment pond；Described one-level to three-level front end adjusts net with bio-matrix
Change the microbial inoculum that micro- life that straw and 1-2Kg contain nitrifier and denitrifying bacterium is added in pond respectively, the addition first of straw is every
Ton sanitary sewage addition 100-150Kg, adds a straw in individual month per 5-7 according to the 50% of addition first later；Described
The bottom of current wetland is sequentially filled clay 18-32cm, fine sand 18-22cm, cinder 18-42cm, bentonite 18- from bottom to top
42cm, rubble 18-32cm, and canna is planted on rubble；Described one-level is to seven grades of ecological wetlands respectively in underfill
18-62cm clays simultaneously keep 25-90cm water depths, spray the microbial bacterial agent 1-2kg containing nitrifier and denitrifying bacterium, and plant
Plant green watermifoil；Described end intensive treatment pond is water passage from bottom 10-20cm, is alternately filled above water passage
Function unimolecule nanometer composite layer 20-40cm, rough sand layer 10-20cm, 4-8 layers are filled altogether.
Further, described processing system sequentially forms 5-10cm height from the setting pot of front end to end intensive treatment pond
Drop is spent, current flow 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 seven 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 front end regulations and bio-matrix clarifier-tank, 7 grades of green watermifoil ecological wetlands, 1 grade of current wetland and 1 grade of end
Strengthen 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 utilize nature gradient driving force, water body in bio-matrix processing pond, green watermifoil wetland, current wetland from
Stream 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 day
Often management and maintenance is that ecological wetland needs weeds (annual 4-5 times) of mowing and remove, front end regulation and bio-matrix processing pond
Need to add straw (interval addition in 5-7 months 1 time), operate very simple.A set of rural domestic sewage treatment system 1 year
Operational and administrative expenses about 1000-3000 members.
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 A 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 by green watermifoil fodder, can reduce dependence of the breeding feed to high-quality arable land, to solving
The grain security in China is of great significance.
Brief description of the drawings
Fig. 1 is a kind of domestic sewage processing system schematic diagram；
Fig. 2 is a kind of domestic sewage processing system current floor map；
Fig. 3 is a kind of domestic sewage ecologically treating system water flow section schematic diagram；
Wherein：A-setting pot, B-grid pond, C-one-level front end regulation and bio-matrix clarifier-tank, D-two level front end
Regulation and bio-matrix clarifier-tank, E-three-level front end regulation and bio-matrix clarifier-tank, F- current wetlands, G-one-level ecology
Wetland, H- two level ecological wetlands, the green ecological wetland of I- three-levels, J- level Four ecological wetlands, K- Pyatyi ecological wetlands, L- six
Level ecological wetland, seven grades of ecological wetlands of M-, N- ends intensive treatment pond.
Embodiment
Embodiment 1:
Illustrate rural area of the present invention so that Jiangmen City of Guangdong Province Xinhui District precipice Men Zhennan closes two groups of village demonstration project as an example
Domestic sewage processing system and ecological treatment method.Xinhui District precipice Men Zhennan closes about 2.5 square kilometres of village, and 6 villager group are common
304 families, the people of population more than 1100.The domestic sewage in rural areas Ecological Disposal engineering have collected the daily of the people of village more than 600 by pipe network
Sanitary sewage, design treatment scale are 50 ton days, are 1300m using a piece of area in the village2Semicircle wasteland, suit measures to local conditions
The domestic sewage in rural areas ecological treatment system is designed as semicircle (see Fig. 2).On April 6th, 2017 starts to construct, April 27-
Start within 29th to add straw with bio-matrix clarifier-tank in one-level, two level, the regulation of three-level front end, in one-level to seven grades of ecological wetlands
Green watermifoil is planted, canna is planted in current wetland；May 9 adjusted wet with bio-matrix clarifier-tank, ecology in front end respectively
The red bacterium of ground sprinkling microbial bacterial agent protects No. 6 (Wuxi Zhongke Energy Biological Technology Co., Ltd. produces, similarly hereinafter)；May 21 started
Access sanitary sewage into system, COD in August collection water sample analysis result display system end wetland discharge water on the 10th, ammonia nitrogen,
The pollutant load such as total nitrogen and total phosphorus is below State Environmental Protection Administration in 2002 issuing and implementation《People's Republic of China (PRC) city
City's sanitary 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 setting pot A, grid pond B, one-level
Front end is adjusted and bio-matrix clarifier-tank C, the regulation of two level front end and bio-matrix clarifier-tank D, the regulation of three-level front end and bio-based
Matter clarifier-tank E, current wetland F, one-level ecological wetland G, two level ecological wetland H, three-level ecological wetland I, level Four ecological wetland J,
Pyatyi ecological wetland K, six grades of ecological wetland L, seven grades of ecological wetland M, end intensive treatment pond N, from front end in processing system
Setting pot A to end intensive treatment pond N sequentially forms height fall, and current flow naturally by the drop of landform, specific as follows：
Setting pot A：Setting pot A frame is reinforced concrete pool construction, and design specification is long 800cm (length) × 500cm
(width) × 150cm (depth), pending domestic sewage in rural areas introduces setting pot by pipe network, to intercept silt in sanitary sewage,
The silt precipitated in periodic cleaning setting pot；
Grid pond B：Grid pond B frame is reinforced concrete pool construction, and design specification is radius 700cm a quarter
Circle, depth 150cm, the surface sanitary sewage in setting pot A is introduced into grid pond by pipe network, to intercept rubbish in sanitary sewage
The rubbish intercepted etc. bulk suspension and floating object, periodic cleaning grid pond；
One-level front end is adjusted and bio-matrix clarifier-tank C：The agriculture of silt and rubbish is filtered by setting pot A and grid pond B
Village's sanitary sewage introduces the regulation of one-level front end and bio-matrix clarifier-tank bottom, this grade of front end regulation and bio-matrix by pipeline
Clarifier-tank frame is reinforced concrete pool construction, and design specification is 1300cm (length) × 600cm (width) × 150cm (depth), first
5 tons of straw of filling (sanitary sewage per ton adds 100-150Kg), while add the microbial bacterial agent containing nitrifier and denitrifying bacterium
Red bacterium protects No. 6 1kg, later at interval of the 2.5 tons of straw (first the 50% of addition) of addition in 5-7 months, the master of this grade of clarifier-tank
It is carbon-nitrogen ratio, acid-base value and microbial population in regulation sanitary sewage to want function, and intercepts fine particulates and some influence plants
Harmful substance (such as grease), degraded part COD and the ammonia nitrogen of thing growth；
Two level front end is adjusted and bio-matrix clarifier-tank D：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, this grade of front end regulation and bio-matrix clarifier-tank frame
For reinforced concrete pool construction, design specification is long 1300cm (length) × 600cm (width) × 150cm (depth), straw and microorganism
The addition that the red bacterium of microbial inoculum protects No. 6 is same as above；
Three-level front end is adjusted and bio-matrix clarifier-tank E：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 is with bio-matrix clarifier-tank frame
Reinforced concrete pool construction, design specification are long 900cm (length) × 800cm (width) × 150cm (depth), straw and microbial bacterial agent
The addition that red bacterium protects No. 6 is same as above；Front end is adjusted is divided into 3 grades with bio-matrix clarifier-tank, utilizes 5-10cm height between every grade
Difference, sanitary sewage flow in system by one-level to three-level (front and rear), by surface to bottom (upper and lower) consistent, sanitary sewage
Fully contacted with bio-matrix (straw and related microorganisms), obtain and the harmful substance for influenceing plant growth is fully intercepted, and
Promote microorganism to COD, ammonia nitrogen, the degraded of phosphorus or changing effect；
Current wetland F：Three-level front end is adjusted introduces current wetland bottom with bio-matrix purification pool surface water outlet by pipeline
Portion, current wetland frame be cement brick mix pool construction (bottom carry out Anti-seeping technology), design specification be long 5000cm (length) ×
300cm (width) × 130cm (depth), the layer material of underfill five, it is respectively from top to bottom：Underfill 20cm clays, in clay
Upper filling 20cm fine sands, 30cm cinders are filled on fine sand, 30cm bentonites are filled on cinder, the superiors filling 30cm is broken
Stone, metalling plant the material such as canna, the clay of filling, cinder, bentonite can phosphate effectively in absorption effluent, plant
Canna Jiangmen throughout the year can with vigorous growth, can inhale it is a large amount of receive sewage in nitrogen phosphorus；
One-level ecological wetland G：The water outlet of current wetland surface introduces one-level ecological wetland bottom by pipeline, and this grade of ecology is wet
Ground frame is that cement brick mixes pool construction (bottom carry out Anti-seeping technology), and design specification is long 2300cm (length) × 600cm (width)
× 100cm (depth), wetland underfill 60cm clay (red soil fine earth), planting green watermifoil, that microbial bacterial agent is sprayed after 15 days is red
Bacterium protects No. 6 1kg, and holding water depth is 35cm, starts front end regulation and the life after the processing of bio-matrix clarifier-tank after 10 days
Sewage 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；Green watermifoil wetland holding 25-35cm shallow water is advantageous to sanitary sewage and flowed in wetland
Dissolved oxygen content promotes the nitration reaction of nitrifying microorganisms in journey and air contact, increase water body, keeps the deeper water of 70-90cm
Anaerobic environment promotes the anti-nitration reaction of denitrifying microorganism in depth increase wetland, typically to above 4- in the design of wetland
6 grades of ecological wetlands are using the alternate arrangement of shallow (the 30-35cm depth of waters), deep (the 60-90cm depth of waters)；
Two level ecological wetland H：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 long 2300cm (length) × 600cm
(width) × 100cm (depth), wetland underfill 20cm clay (red soil fine earth), plant green watermifoil and spray microorganism after 15 days
The red bacterium of microbial inoculum protects No. 6 1kg, keeps 75cm water depths；
Three-level ecological wetland I：The surface water outlet of two level ecological wetland enters three-level ecological wetland bottom, level life by pipeline
State wetland frame is cement brick mix structure, and design specification is long 2300cm (length) × 600cm (width) × 100cm (depth), wetland bottom
Portion's filling 60cm clays (red soil fine earth), plant green watermifoil and microbial bacterial agent No. 6 1kg of red bacterium guarantor are sprayed after 15 days, keep
35cm water depths；
Level Four ecological wetland J：The surface water outlet of three-level ecological wetland enters level Four ecological wetland bottom, level life by pipeline
State wetland frame is cement brick mix structure, and design specification is long 2200cm, wide 600cm, 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 K：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 long 2200cm (length) × 600cm (width) × 100cm (depth), wetland bottom
Portion's filling 20cm clays (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；
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 long 2000cm (length) × 700cm (width) × 100cm (depth), wetland bottom
Portion's filling 20cm clays (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；
Seven grades of ecological wetland M：Six grades of ecological wetland surface water outlets introduce seven grades of ecological wetland bottoms, level life by pipeline
State wetland frame is cement brick mix structure, and design specification is 1900cm (length) × 700cm (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；
End intensive treatment pond N：Seven 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 600cm (length) × 200cm (width) × 220cm (depth), from bottom
20cm is water passage, and function unimolecule nanometer composite layer (Jiangxi Province duckweed is sequentially filled from above under above water passage
" the function unimolecule nano composite material " of city of township Anyuan industry park Ge Feng tech materials Co., Ltd production, model PA02B-3,
Graininess) 30cm, rough sand layer (4-6mm thick river sand) 20cm, function unimolecule nanometer composite layer 30cm, rough sand layer
It is 20cm, function unimolecule nanometer composite layer 30cm, rough sand layer 20cm, function unimolecule nanometer composite layer 30cm, thick
Sand bed 20cm, water passage and rough sand layer mainly prevent sorbing material is hardened blocked hydrospace, ensure that pending life is dirty
Water is unobstructed in internal system flowing and phosphate, fine grained suspension etc. in simultaneously absorption effluent are fully contacted with sorbing material, makes
Water body is further purified, and water body is limpider, and the sewage through processing is discharged from the surface in end intensive treatment pond.
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 setting pot A bottom, natural subsidence silt,
Surface sanitary sewage in setting pot A is introduced to grid pond B bottom, oil removal and floating object are removed in interception；
(2) front end regulation and bio-matrix purified treatment：The surface sewage of grid pond introduces one-level successively by pipeline
Front end is adjusted and bio-matrix clarifier-tank C, the regulation of two level front end and bio-matrix clarifier-tank D, the regulation of three-level front end and bio-based
Matter clarifier-tank E bottom, front end regulation are reinforced concrete pool construction with bio-matrix clarifier-tank frame, and volume is at design day
Manage sanitary sewage amount 2-3 times, filling straw (calculate, sewage per ton adds 100-150kg according to sanitary sewage amount is handled day
Straw), while add microbial inoculum (Wuxi Zhongke Energy Biological Technology Co., Ltd. containing the microorganism such as nitrifier and denitrifying bacterium
The red bacterium of production protects No. 6) 1-2kg, later at interval of 1 straw (first the 50% of addition) of addition in 5-7 months；The level purifies
The major function in pond be regulation sanitary sewage in carbon-nitrogen ratio, acid-base value and microbial population, and intercept fine particulates and some
Influence harmful substance (such as grease), degraded part COD and the ammonia nitrogen of plant growth；
(3) current wetland is handled：Surface sewage through 3 grades of front end regulations and the processing of bio-matrix clarifier-tank is drawn by pipeline
Enter current wetland F bottom, using phosphate in the clay of filling, fine sand, cinder, bentonite, rubble absorption effluent, plantation
Canna absorbs the nitrogen phosphorus in sewage；
(4) green watermifoil ecological wetland processing：The surface sewage of current wetland is introduced into one-level ecological wetland G, two successively
Level ecological wetland H, three-level ecological wetland I, level Four ecological wetland J, Pyatyi ecological wetland K, six grades of ecological wetland L, seven grades of ecologies
Wetland M bottom, by green watermifoil absorbed nitrogen phosphorus, nitrifying microorganisms, denitrifying microorganism, anaerobism with green watermifoil symbiosis
Mineralized nitrogen is nitrogen by ammonia oxidation microbiological；
(5) end intensive treatment：Surface sewage through 7 grades of ecological wetland processing introduces end intensive treatment pond N bottom,
Bottom is water passage, replaces filling adsorption material (such as Jiangxi Province's Pingxiang City Anyuan work successively from upper under above water passage
" the function unimolecule nano composite material " of Ye Yuangefeng tech materials Co., Ltd production) (4-6mm's is thick for layer and rough sand layer
River sand) 4-8 layers, water passage and rough sand layer prevent sorbing material is hardened from blocking hydrospace, ensureing pending sanitary sewage
It is unobstructed in internal system flowing and fully contacted with sorbing material and phosphate, fine grained suspension etc. in absorption effluent, make water
Body is further purified, and water body is limpider, and the sewage through processing is discharged from the surface in end intensive treatment 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 outlet of matter clarifier-tank, current wetland outlet, the water sample that export to seven grades of ecological wetlands of one-level, determine ammoniacal nitrogen, total nitrogen, total phosphorus and
COD (COD), as shown in table 1, ammoniacal nitrogen, total nitrogen and total phosphorus and COD in system end intensive treatment pond discharge water
Content is controlled in State Environmental Protection Administration in 2002 issuing and implementation《People's Republic of China's city domestic sewage discharge mark
Accurate (GB18918-2002)》Below one-level A Con trolling index values.
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 processing：Pending domestic sewage in rural areas introduces the bottom of setting pot, natural subsidence silt；
（2）Filtration treatment：The surface sanitary sewage of setting pot is introduced into the bottom of grid pond, oil removal and floating are removed in interception
Thing；
（3）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-level to three-level front end regulation adds straw and 1-2Kg contains nitrifier respectively with bio-matrix clarifier-tank
With the microbial inoculum of micro- life of denitrifying bacterium, the addition first of straw adds 100-150Kg for sanitary sewage per ton, later per 5-7
Add a straw according to the 50% of addition first within individual month, by straw and microbial bacterial agent adjust carbon-nitrogen ratio in sanitary sewage,
Acid-base value and microbial population, and fine particulates and grease are intercepted, degrade COD and ammonia nitrogen；
（4）Current wetland processing：Sewage through the regulation of three-level front end and the processing of bio-matrix clarifier-tank introduces undercurrent by pipeline
The bottom of wetland, the bottom of current wetland be sequentially filled from bottom to top clay 18-32cm, fine sand 18-22cm, cinder 18-42cm,
Bentonite 18-42cm, rubble 18-32cm, and canna is planted on rubble, utilize the clay of filling, fine sand, cinder, swelling
Phosphate in soil, rubble absorption effluent, the canna of plantation absorb the nitrogen phosphorus in sewage；
（5）Green watermifoil ecological wetland processing：The surface sewage of current wetland is introduced into one-level ecological wetland, two level ecology successively
Wetland, three-level ecological wetland, level Four ecological wetland, Pyatyi ecological wetland, six grades of ecological wetlands, the bottom of seven grades of ecological wetlands,
Described one-level in underfill 18-62cm clays and keeps 25-90cm water depths respectively to seven grades of ecological wetlands, and sprinkling contains
Nitrifier and the microbial bacterial agent 1-2kg of denitrifying bacterium, and green watermifoil is planted, by green watermifoil absorbed nitrogen phosphorus, while with
Mineralized nitrogen is nitrogen by the nitrifying microorganisms of green watermifoil symbiosis, denitrifying microorganism, anaerobic ammonia oxidation microbiological；
（6）End intensive treatment：Surface sewage through seven 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 nanometer is answered above water passage
Condensation material layer 20-40cm, rough sand layer 10-20cm, 4-8 layers are filled altogether, adsorbed by function unimolecule nanometer composite layer dirty
Phosphate, fine grained suspension in water, 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
The design volume of regulation and bio-matrix clarifier-tank is 2-3 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 seven grades of ecologies
The design volume of wetland is 2-4 times of sanitary sewage day output.
A kind of 4. rural domestic sewage treatment system, it is characterised in that setting pot（A）By pipeline successively with grid pond（B）, one
The regulation of level front end and bio-matrix clarifier-tank（C）, two level front end regulation with bio-matrix clarifier-tank（D）, three-level front end regulation with
Bio-matrix clarifier-tank（E）, current wetland（F）, one-level ecological wetland（G）, two level ecological wetland（H）, the green ecological wetland of three-level
（I）, level Four ecological wetland（J）, Pyatyi ecological wetland（K）, six grades of ecological wetlands（L）, seven grades of ecological wetlands（M）, end strengthen
Processing pond（N）Connection；Described one-level adds straw respectively with bio-matrix clarifier-tank to the regulation of three-level front end and 1-2Kg contains
The microbial inoculum of micro- life of nitrifier and denitrifying bacterium, the addition first of straw add 100-150Kg for sanitary sewage per ton, after
A straw is added per 5-7 according to the 50% of addition first within individual month；Described current wetland（F）Bottom from bottom to top successively
Clay 18-32cm, fine sand 18-22cm, cinder 18-42cm, bentonite 18-42cm, rubble 18-32cm are filled, and on rubble
Plant canna；Described one-level in underfill 18-62cm clays and keeps the 25-90cm depth of waters respectively to seven grades of ecological wetlands
Degree, sprays the microbial bacterial agent 1-2kg containing nitrifier and denitrifying bacterium, and plant green watermifoil；At described end reinforcing
Manage pond（N）It is water passage from bottom 10-20cm, function unimolecule nanometer composite layer is alternately filled above water passage
20-40cm, rough sand layer 10-20cm, 4-8 layers are filled altogether.
5. rural domestic sewage treatment system according to claim 1, it is characterised in that described processing system is from front end
Setting pot（A）To end intensive treatment pond（N）5-10cm height falls are sequentially formed, current flow naturally by the drop of landform
It is dynamic.
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 seven grades of ecologies
The frame of wetland is cement brick mix structure, and base impervious is handled.
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Application publication date: 20180102 |
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