CN203639301U - Livestock wastewater treatment system - Google Patents
Livestock wastewater treatment system Download PDFInfo
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- CN203639301U CN203639301U CN201420013438.9U CN201420013438U CN203639301U CN 203639301 U CN203639301 U CN 203639301U CN 201420013438 U CN201420013438 U CN 201420013438U CN 203639301 U CN203639301 U CN 203639301U
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Abstract
The utility model discloses a livestock wastewater treatment system and belongs to the treatment field of livestock breeding wastewater. The livestock wastewater treatment system comprises a water yield regulating tank, an EGSB (Expanded Granular Sludge Bed) anaerobic reactor and a tower type biological filter which are in series connected in sequence, wherein a mechanical stirrer is arranged in the EGSB anaerobic reactor; a part of outlet water of the EGSB anaerobic reactor is pumped to the bottom of the EGSB anaerobic reactor by a pump to carry out reflux; reflux water is controlled by controlling opening/closing and opening degree of the valve; the reflux water goes to the bottom of the EGSB anaerobic reactor and a water distributing tube connected with a water distributor after passing through the mechanical stirrer to push an impeller to rotate. The system disclosed by the utility model is adopted, so that treated wastewater not only can reach standards of Discharge Standard of Pollutants for Livestock and Poultry Breeding (GB18596-2001); and moreover, capital construction and operation cost for wastewater treatment is low.
Description
Technical field
The invention belongs to the process field of livestock breeding wastewater, more particularly, is a kind of system of waste water of livestock poultry processing.
Background technology
In recent years, the development of livestock and poultry breeding industry had been accelerated in expanding economy.Pollutent, particularly plant's waste water that livestock and poultry breeding industry produces, the problem of environmental pollution causing is also outstanding day by day.In Wastewater from Pig Farm except containing a large amount of wash-down waters, also contain urine, ight soil residue, food-residue etc., organism and concentration of suspension are high, complicated component, belong to typical " three height " waste water, be high organic concentration, high suspended matter, high concentration of nitrogen and phosphorus, caused very large difficulty to processing up to standard.Studies show that according to relevant, the COD of pig manure urine is up to 20000-30000mg/L, the BOD of waste discharge
5up to 2000-8000mg/L, nitrogen wherein, phosphorus concentration are 20～50 times of sanitary sewage.
Anaerobic-aerobic combination process is the technique that was widely used in recent years livestock and poultry cultivation sewage disposal.Majority adopts the aftertreatment of SBR technique as anaerobic stages both at home and abroad at present, (the Yang Hong such as Yang Hong, Li Daotang, Zhu Zhangyu, Deng. Intensive Farm of Pig Raising rushes the processing up to standard [J] of hurdle water. Shanghai Communications University's journal, 2000,34 (4): 550-560.) find in lab scale: if the outer alkali that adds, treatment effect is often undesirable, NH
4 +the clearance of-N is less than 60%, NH in water outlet
4 +the concentration of-N is 600mg/L left and right.Bernet etc. have adopted the aerobic SBR combination process of anaerobism SBR-that is similar to A/O technique to process piggery wastewater, TOC clearance 81%-91%, NH
4 +-N clearance 97%, TN clearance only has 58.5%, and effect is undesirable, and need to be by aerobic SBR effluent recycling to anaerobism SBR, and hydraulic detention time (HRT) reaches 22-30 days.Deng Liangwei etc. adopt hydrolysis-SBR-active carbon absorption technology treatment scale piggery waste, but the expense of processing is too high, is difficult to large-scale promotion.Yang Chaohui etc. (
Yang Chaohui, Ceng Guang is bright, high cutting edge of a knife or a sword. the experimental study [J] of solid-liquid separation-UASB-SBR art breading Wastewater from Pig Farm. and Hunan University's journal, 2002,29 (6) 95-99.) adopt solid-liquid separation-UASB-SBR combination process to process Wastewater from Pig Farm.But this technical process complexity, less stable.Above-mentioned research concentrates on the purification of water quality of combination process to breeding wastewater processing, has ignored the CH that anaerobic process produce
4pollute and control.And CH
4be a kind of important greenhouse gases, the Greenhouse effect of Global warming are only second to CO
2, it is CO that its global a century heats potentiality
225 times.
There is being certain application EGSB reactor and tower biological filter aspect processing waste water of livestock poultry.Chinese Patent Application No.: CN201210596235.2, open day: the patent application document of on 04 24th, 2013, disclose a kind of micro-oxygen expanded granular sludge bed-slag biological filter sewage processing system, in order to solve the problem that aerobic activated sludge process floor space is large, aeration energy consumption is high and excess sludge production is large.This system is formed by micro-oxygen CGSB and slag biological filter series combination.Its weak point is: 1) cost of slag filler is higher, and only raw materials cost is just 3000-4000 yuan/ton, and the cost of this class biologic packing material of mineralized waste, slag is lower than 400 yuan/ton (mainly comprising: the electricity charge, transport charge, remuneration etc.).The demonstration project that Shi Lei builds according to rapid filtration system principle of design, treatment scale 50t/d, ton processing cost is only 5.1 yuan of (Qian little Qing, Niu Dongjie, Ziyang, building, etc. Development of Resource Comprehensive Application Study on Mineralized Waste in Landfill Site [J]. environmental hygiene engineering, 2006,14 (2): 62-64.); 2) pollutent is removed in the main dependence adsorption of slag filler, filter clogging or reach absorption saturated after, change filtrate or regenerate and all can increase running cost and manual work time, and mineralized waste as biofilter material mainly rely on surface attachment the microflora that quantity is huge, of a great variety, metabolic capacity is extremely strong carry out biological degradation, by increase earthworm in mineralized waste, the water permeability of increase filler that can be not by manual work in the situation that, improves treatment effect and filtration cycle; 3) biogas EGSB reactor not being produced makes full use of; 4) EGSB reactor only relies on porous water distribution board water distribution can increase the disturbance in vertical direction, but less to the perturbation action in horizontal direction, limited to the increase effect of the contact area between muddy water, so that muddy water contact is insufficient.
In addition,, although adopt the solid waste such as mineralized waste lower as the tower biological filter running cost of filler, exist in actual applications the problem of filter clogging.
Summary of the invention
1, goal of the invention
Anaerobic treatment process CH in processing for waste water of livestock poultry in prior art
4the unordered discharge of gas, EGSB reactor exist granular mud bed contact with waste water insufficient, reactor bottom overload, the problem of tower biological filter filter clogging, the invention provides a kind of livestock/poultry wastewater treatment system, waste water after treatment can not only reach " livestock and poultry breeding industry pollutant emission standard " standard (GB18596-2001), and the capital construction of wastewater treatment and running cost lower.
2, technical scheme
In order to realize above-mentioned technical purpose, technical scheme of the present invention is as follows.
A kind of livestock/poultry wastewater treatment system, it comprises the water yield equalizing tank of series connection successively, EGSB anaerobic reactor and tower biological filter, in in described EGSB anaerobic reactor, be provided with mechanical stirrer, the part water outlet of described EGSB anaerobic reactor is pumped to this EGSB anaerobic reactor bottom and is carried out internal reflux by pump, by keying and the open degree control recirculation water of by-pass valve control, recirculation water accesses the water distributor that EGSB anaerobic reactor bottom is connected with water distributor after mechanical stirrer promotes wheel rotation, described water distributor accesses the waste water from water yield equalizing tank simultaneously.
Preferably, this system also comprises oxidation pond and underflow type artificial wet land, and flow through successively oxidation pond, underflow type artificial wet land of the water outlet of processing through tower biological filter processed.
Preferably, the top of described EGSB anaerobic reactor is provided with collection and confinement of gases pipeline, and collection and confinement of gases pipeline is connected with the aerator that oxidation pond surface arranges.
Preferably, the waste water that enters into oxidation pond carries out water distribution uniformity by the water distributor that is arranged on oxidation pond bottom.
Preferably, described underflow type artificial wet land sets gradually level Four packing layer from top to bottom, be respectively fine sand, clay, rubble and brickbat, the plant of described underflow type artificial wet land top layer plantation is one or more in reed, cattail, Herba Eichhorniae, Wildcelery Herb, Canna generalis Bailey, eel grass, soft water grass.Utilize microbial film, root system and the veneer of soil of filling surface and the effect of damming of filler in underflow type artificial wet land, process waste water; In waste water after treatment, N, P and organism amount all reach " livestock and poultry breeding industry pollutant emission standard " permissible value (GB18596-2001).
Preferably, described tower biological filter is disposed with elevated tank, turning spurt water device, filter material layer and header tank downwards from top, the water outlet after treatment of described EGSB anaerobic reactor flows automatically to by upper pipe in the elevated tank at top, tower biological filter, through turning spurt water device water distribution uniformity, then collected by header tank after being flowed out by filter material layer.Part P in waste water is adsorbed, NO
3 --N and NH
4 +-N concentration reduces, and organism obtains further biological degradation.
Preferably, described filter material layer comprises three grades, is followed successively by mineralized waste, mineralized waste and cinder, and liquid-solid ratio is 1:10～1:15, and wherein, in the filter material layer of the second stage, the mass ratio of earthworm and mineralized waste is 1:5～1:10.
Preferably, the aspect ratio of described EGSB anaerobic reactor is 5:1～8:1, the diameter of impeller is 3/5～4/5 of EGSB anaerobic reactor diameter, the equally distributed impeller of stir shaft along mechanical stirrer on mechanical stirrer has 4～6, rotating speed is 120-180r/min, EGSB anaerobic reactor return flow is flooding velocity 3～5 times.
A treatment process for waste water of livestock poultry, the steps include:
(A) waste water of livestock poultry is promoted to EGSB anaerobic reactor by lift pump after water yield equalizing tank regulating pondage, carry out water distribution uniformity by the water distributor that is arranged on EGSB anaerobic reactor bottom, organism in waste water fully contacts with the mud of EGSB anaerobic reactor bottom, most of processed absorption;
Meanwhile, the part water outlet of EGSB anaerobic reactor is delivered to EGSB anaerobic reactor bottom by pipeline and is refluxed, and carries out water distribution for the water distributor that promotes the wheel rotation of mechanical stirrer in EGSB anaerobic reactor and access EGSB anaerobic reactor bottom;
Methane (the CH that EGSB anaerobic reactor anaerobism produces
4) collect by collection and confinement of gases pipeline;
(B) water outlet after treatment of EGSB anaerobic reactor flows automatically to tower biological filter;
(C) tower biological filter water outlet after treatment flows automatically to oxidation pond bottom, carry out water distribution uniformity by the water distributor that is arranged on oxidation pond bottom, oxidation pond surface aeration machine utilizes collection gas in this step (A) and the mixed gas of air to carry out aeration, in the pool, replace in anaerobic and aerobic, N, P in waste water are further removed, and organism obtains further biological degradation;
(D) oxidation pond water outlet after treatment enters underflow type artificial wet land by pipeline self;
(E) through underflow type artificial wet land, water outlet after treatment enters in river nearby by pipeline.
Mineralized waste refers to landfill (8～10 years, south, 12～15 years, the north) for many years in landfill yard, substantially reaches stabilization, can exploit the domestic refuse of utilizing.Mineralized waste possesses good stable vesicular structure, there is larger adsorption specific surface area, organic content is high, cation exchange capacity is large, and in long-term biodegradation process, mineralized waste surface attachment the microflora that quantity is huge, of a great variety, metabolic capacity is extremely strong, the sewage of high density is had to good processing capacity.
3, beneficial effect
Than prior art, the invention has the advantages that:
(1) a part of water outlet of EGSB anaerobic reactor is pumped to reactor bottom and is carried out internal reflux by pump, by keying and the open degree control recirculation water of by-pass valve control, after the rotation that recirculation water promotes impeller through mechanical stirrer, access water distributor, by the agitaion of impeller and thereupon produce upflow velocity, increased muddy water in the horizontal direction with vertical direction on disturbance, granule sludge reaches fluidized state completely, increase on the one hand the contact area between muddy water, biochemical reaction rate is obviously improved, thereby greatly improve reactor and removed organic ability, the fluidized state of solid can alleviate the OL situation of reactor bottom on the other hand, thereby increase the ability to bear of reactor to organic loading, due to the diluting effect of recirculation water, increased the capacity of resisting impact load of granule sludge simultaneously, in addition, the inside of EGSB anaerobic reactor is by mechanical stirrer is set, and mechanical stirrer relies on the flow driving of current, has reduced the use of motor device, thereby has reduced capital construction and running cost,
(2) in the second stage filter material layer of tower biological filter by introduce earthworm in mineralized waste filtrate, improved the water permeability of mineralized waste, avoided filler blockage problem, promoted organic substance decomposition and inversion, nitrogen, phosphorus are removed and are had a very significant increase; The filler of tower biological filter adopts mineralized waste and cinder, belongs to the recycling of refuse, has greatly reduced operation cost;
(3), in this combination process, subsequent disposal adopts oxidation pond and underflow type artificial wet land, makes full use of existing resource, has reduced initial cost; EGSB anaerobic reactor has larger aspect ratio, has reduced floor space;
(4) tower biological filter water outlet relies on water distributor from oxidation pond bottom even water distribution, has guaranteed the good contact of pollutent and microorganism, has effectively improved load and processing efficiency;
(5) biogas (CH that EGSB anaerobic reactor produces
4) gas, access the aerator on oxidation pond surface by gas pipeline, and after air mixed, oxidation pond is carried out to aeration, utilize the discharge that in water body, ammonia oxidation bacteria has been cut down greenhouse gases CH4 to the equal oxidation capacity of methane, reduce secondary pollution; By controlling aerator, oxidation pond is carried out to intermittent aeration simultaneously, in the pool, formed the alternate environment of anaerobic and aerobic, effectively improved the N in sewage, P, organic clearance.
Accompanying drawing explanation
Fig. 1 livestock/poultry wastewater treatment system schematic diagram of the present invention;
The sectional view of the EGSB anaerobic reactor of Fig. 2 livestock/poultry wastewater treatment system of the present invention;
The sectional view of the tower biological filter of Fig. 3 livestock/poultry wastewater treatment system of the present invention.
In figure: 1, water yield equalizing tank; 2, EGSB anaerobic reactor; 21, mechanical stirrer; 22, impeller; 23, collection and confinement of gases pipeline; 24, triphase separator; 25, water distributor; 3, tower biological filter; 31, elevated tank; 32, turning spurt water device; 33, header tank; 4, oxidation pond; 41, aerator; 5, underflow type artificial wet land; 6, river.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, technical scheme of the present invention is elaborated.
Embodiment 1
(average water quality is as COD3877.4mg/L, TP39.0mg/L, TN1335.8mg/L, NH take pig excrement and sewage for the present embodiment
4 +-N781.3mg/L, SS1765mg/L, pH8.01) carry out wastewater treatment for example.
In conjunction with Fig. 1, Fig. 2, by being stored in pig excrement and sewage in water yield equalizing tank 1, (average water quality is COD3877.4mg/L, TP39.0mg/L, TN1335.8mg/L, NH
4 +-N781.3mg/L, SS1765mg/L, pH8.01), with 1.2m
3the flow of/h injects EGSB anaerobic reactor 2, the high 8m of EGSB anaerobic reactor 2, and diameter 1m, useful volume is 24m
3, top arranges triphase separator 24, and mechanical stirrer 21 is evenly distributed with 5 impellers 22 along stir shaft, and diameter 0.8m starts internal reflux after 20h, and return flow is 6.0m
3/ h, by regulating keying and the open degree of recycle control valve, in mechanical stirrer 21, the rotating speed of impeller 22 is 175r/min, and the upflow velocity of EGSB anaerobic reactor 2 interior waste water is 3.0m/h, and keeping afterwards flooding velocity is 1.5m
3/ h, return flow is 8.5m
3/ h, hydraulic detention time HRT is 15h, average effluent quality is COD969.4mg/L, TP30.0mg/L, TN367.2mg/L, NH
4 +-N712.5mg/L, SS843mg/L, pH7.55; Through EGSB anaerobic reactor 2 water outlet after treatment by pipeline with 0.4m
3the elevated tank 31(length of side that the flow of/h injects 3 tops, tower biological filter is 1m), and by turning spurt water device 32 water distribution uniformities of water tank bottom.In conjunction with Fig. 3, the long 2m in tower biological filter 3, wide 1m, high 5m, three grades of filter material layers are set from top to bottom, filtrate respectively is mineralized waste, mineralized waste, cinder, liquid-solid ratio is 1:15, and wherein, in the filter material layer of the second stage, the mass ratio of earthworm and mineralized waste is 1:5, the height of filter material layers at different levels is 1m, and turning spurt water device 32 water flows are 0.4m
3/ h, the hydraulic load of tower biological filter 3 is 0.4m
3/ (m
3d), hydraulic detention time HRT is 15h to filtrate, and average effluent quality is COD533.7mg/L, TP13.0mg/L, TN157.8mg/L, NH
4 +-N208.1mg/L, SS143mg/L, pH7.84;
As Fig. 1, collected by the header tank 33 of filter tank bottom through tower biological filter 3 water outlet after treatment and by pipeline self to 4 ends of oxidation pond, oxidation pond 4 degree of depth are 5m, the long 8m of Chi Ding, wide 5m, long 6m, wide 4m at the bottom of pond, water inlet is carried out water distribution uniformity by the water distributor 25 of bottom, and water-in pushes up 2.5m apart from pond, water distributor 25 is apart from top, pond 2m, and water outlet is apart from water surface 0.5m; Carry out intermittent aeration by surface aeration machine 41, the cycle is 12h, and the aeration time in 24h is distributed as 4～8h, 12～16h, 20～24h; Oxidation pond 4 surface aeration machines 41 utilize the collection gas of top gas conduit 23 of EGSB anaerobic reactor 2 and the mixed gas of air, and ratio of mixture is 1:5, and hydraulic detention time HRT is 7 days, average effluent quality is COD405.1mg/L, TP8.4mg/L, TN130.1mg/L, NH
4 +-N112.5mg/L, SS104mg/L, pH7.21.
As Fig. 1, enter underflow type artificial wet land 5 through oxidation pond 4 water outlet after treatment by pipeline self, underflow type artificial wet land 5 degree of depth are 8m, long 7m, wide 3m, and level Four packing layer is set from top to bottom, and filler respectively is fine sand, clay, rubble, brickbat, wherein fine sand layer thickness is 0.5m, thickness of clay soil is 1.0m, and metalling thickness is 2.5m, and particle diameter is 1～5cm, brickbat layer thickness is 4.0cm, and particle diameter is 5～20cm.Underflow type artificial wet land 5 water-ins are apart from 1.5m at the bottom of pond, and water outlet is apart from packing layer top 0.5m; 5 kinds of plants of planting of underflow type artificial wet land are Canna generalis Bailey, eel grass, soft water grass and Wildcelery Herb, and average effluent quality is COD353.5mg/L, TP6.0mg/L, TN100.5mg/L, NH
4 +-N70.1mg/L, SS84mg/L, pH7.15, in waste water after treatment, N, P and organism amount all reach " livestock and poultry breeding industry pollutant emission standard " permissible value (GB18596-2001), the water outlet of processing through underflow type artificial wet land 5 enters in river 6 nearby by pipeline, and pipeline and the river highest water level on records discrepancy in elevation that discharge underflow type artificial wet land 5 is processed water are 0.5m.
Embodiment 2
(average water quality is as COD2544.8mg/L, TP35.0mg/L, TN644.7mg/L, NH take pig excrement and sewage for the present embodiment
4 +-N281.3mg/L, SS1664mg/L, pH7.53) carry out wastewater treatment for example.
In conjunction with Fig. 1, by being stored in pig excrement and sewage in water yield equalizing tank 1, (average water quality is COD2544.8mg/L, TP35.0mg/L, TN644.7mg/L, NH
4 +-N281.3mg/L, SS1664mg/L, pH7.53), with 2.0m
3the flow of/h injects EGSB anaerobic reactor 2, as Fig. 2, and the high 5m of EGSB anaerobic reactor 2, diameter 1m, useful volume is 14m
3, top arranges triphase separator 24, is provided with 4 impellers 22 on the stir shaft of mechanical stirrer 21, and diameter 0.6m, is vertically evenly interspersed, and starts internal reflux after 7h, and return flow is 6.0m
3/ h, by regulating keying and the open degree of recycle control valve, in mechanical stirrer 21, the rotating speed of impeller 22 is 125r/min, and the upflow velocity of EGSB anaerobic reactor 2 interior waste water is 3.0m/h, and keeping afterwards flooding velocity is 1.5m
3/ h, return flow is 8.5m
3/ h, hydraulic detention time HRT is 15h, average effluent quality is COD908.6mg/L, TP28.0mg/L, TN288.7mg/L, NH
4 +-N122.5mg/L, SS776.0mg/L, pH7.44.
In conjunction with Fig. 1, Fig. 3, through EGSB anaerobic reactor 2 water outlet after treatment by pipeline with 0.6m
3the elevated tank 31(length of side that the flow of/h injects 3 tops, tower biological filter is 1m), and by turning spurt water device 32 water distribution uniformities of elevated tank 31 bottoms, the long 2m in tower biological filter 3, wide 1m, high 5m, three grades of filter material layers are set from top to bottom, and filtrate respectively is mineralized waste, mineralized waste, cinder, and liquid-solid ratio is 1:10, wherein, in the filter material layer of the second stage, the mass ratio of earthworm and mineralized waste is 1:10, and filtrate floor height is 1m, and turning spurt water device 32 water flows are 0.4m
3/ h, the hydraulic load of tower biological filter 3 is 0.6m
3/ (m
3d), hydraulic detention time HRT is 10h to filtrate, and average effluent quality is COD410.4mg/L, TP10.5mg/L, TN124.2mg/L, NH
4 +-N80.8mg/L, SS121mg/L, pH7.14.
In conjunction with Fig. 1, collected by the header tank 33 of filter tank bottom through tower biological filter 3 water outlet after treatment and by pipeline self to oxidation pond 4 bottoms, oxidation pond 4 degree of depth are 5m, the long 8m of Chi Ding, wide 5m, long 6m, wide 4m at the bottom of pond, water inlet is carried out water distribution uniformity by the water distributor 25 of bottom, and water-in pushes up 2.5m apart from pond, water distributor 25 is apart from top, pond 2m, and water outlet is apart from water surface 0.5m; Carry out intermittent aeration by surface aeration machine 41, the cycle is 12h, and the aeration time in 24h is distributed as 4～8h, 12～16h, 20～24h; Oxidation pond 4 surface aeration machines 41 utilize the collection and confinement of gases pipeline 23 at EGSB anaerobic reactor 2 tops to collect the mixed gas of gas and air, and ratio of mixture is 1:5, and average effluent quality is COD371.6mg/L, TP6.1mg/L, TN90.2mg/L, NH
4 +-N72.7mg/L, SS84mg/L, pH7.09.
Enter underflow type artificial wet land 5 through oxidation pond 4 water outlet after treatment by pipeline self, underflow type artificial wet land 5 degree of depth are 8m, long 7m, wide 3m, level Four packing layer is set from top to bottom, filler respectively is fine sand, clay, rubble, brickbat, wherein fine sand layer thickness is 0.5m, thickness of clay soil is 1.0m, and metalling thickness is 2.5m, and particle diameter is 1～5cm, brickbat layer thickness is 4.0cm, particle diameter is 5～20cm, and underflow type artificial wet land 5 water-ins are apart from 1.5m at the bottom of pond, and water outlet is apart from packing layer top 0.5m; 5 kinds of plants of planting of underflow type artificial wet land are reed, cattail, Herba Eichhorniae, Wildcelery Herb, and average effluent quality is COD303.5mg/L, TP5.5mg/L, TN80.5mg/L, NH
4 +-N66.1mg/L, SS77mg/L, pH7.05, in waste water after treatment, N, P and organism amount all reach " livestock and poultry breeding industry pollutant emission standard " permissible value (GB18596-2001), through underflow type artificial wet land 5, water outlet after treatment enters in river 6 nearby by pipeline, and pipeline and the river highest water level on records discrepancy in elevation that discharge underflow type artificial wet land 5 is processed water are 0.5m.
Claims (6)
1. a livestock/poultry wastewater treatment system, it comprises successively and it is characterized in that water yield equalizing tank (1), EGSB anaerobic reactor (2) and tower biological filter (3) of series connection:
In in described EGSB anaerobic reactor (2), be provided with mechanical stirrer (21), the part water outlet of described EGSB anaerobic reactor (2) is pumped to this EGSB anaerobic reactor (2) bottom and is carried out internal reflux by pump, by keying and the open degree control recirculation water of by-pass valve control, recirculation water promotes after impeller (22) rotates to access the water distributor that EGSB anaerobic reactor (2) bottom is connected with water distributor (25) through mechanical stirrer (21), and described water distributor (25) accesses the waste water from water yield equalizing tank (1) simultaneously.
2. livestock/poultry wastewater treatment system according to claim 1, it is characterized in that: this system also comprises oxidation pond (4) and underflow type artificial wet land (5), flow through successively oxidation pond (4), underflow type artificial wet land (5) of the water outlet that process (3) through tower biological filter processed.
3. livestock/poultry wastewater treatment system according to claim 2, it is characterized in that: the top of described EGSB anaerobic reactor (2) is provided with collection and confinement of gases pipeline (23), collection and confinement of gases pipeline (23) is connected with the aerator (41) that oxidation pond (4) surface arranges.
4. livestock/poultry wastewater treatment system according to claim 3, is characterized in that: the waste water that enters into oxidation pond (4) carries out water distribution uniformity by the water distributor (25) that is arranged on oxidation pond (4) bottom.
5. livestock/poultry wastewater treatment system according to claim 2, it is characterized in that: described underflow type artificial wet land (5) sets gradually level Four packing layer from top to bottom, be respectively fine sand, clay, rubble and brickbat, the plant of described underflow type artificial wet land (5) top layer plantation is one or more in reed, cattail, Herba Eichhorniae, Wildcelery Herb, Canna generalis Bailey, eel grass, soft water grass.
6. livestock/poultry wastewater treatment system according to claim 1, it is characterized in that: described tower biological filter (3) are disposed with elevated tank (31), turning spurt water device (32), filter material layer and header tank (33) downwards from top, described EGSB anaerobic reactor (2) water outlet after treatment flows automatically to by upper pipe in the elevated tank (31) at top, tower biological filter (3), through turning spurt water device (32) water distribution uniformity, then collected by header tank (33) after being flowed out by filter material layer.
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| CN201420013438.9U CN203639301U (en) | 2014-01-09 | 2014-01-09 | Livestock wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723892A (en) * | 2014-01-09 | 2014-04-16 | 环境保护部南京环境科学研究所 | Livestock and poultry wastewater treatment system and treatment method using system |
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|---|---|---|---|---|
| CN103723892A (en) * | 2014-01-09 | 2014-04-16 | 环境保护部南京环境科学研究所 | Livestock and poultry wastewater treatment system and treatment method using system |
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