CN220845842U - Device for treating slaughter wastewater - Google Patents
Device for treating slaughter wastewater Download PDFInfo
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- CN220845842U CN220845842U CN202322607663.7U CN202322607663U CN220845842U CN 220845842 U CN220845842 U CN 220845842U CN 202322607663 U CN202322607663 U CN 202322607663U CN 220845842 U CN220845842 U CN 220845842U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 70
- 238000003307 slaughter Methods 0.000 title claims abstract description 39
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- 238000005273 aeration Methods 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 238000004065 wastewater treatment Methods 0.000 claims description 12
- 229910021536 Zeolite Inorganic materials 0.000 claims description 7
- 239000010457 zeolite Substances 0.000 claims description 7
- 238000012876 topography Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 19
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 19
- 239000011574 phosphorus Substances 0.000 abstract description 19
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 18
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Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a device for treating slaughter wastewater, which comprises: combining the substrate layer pool; the water inlet tank is arranged at one end of the combined matrix layer pool, a first through hole communicated with the bottom of the combined matrix layer pool is arranged at the bottom of the water inlet tank, and a second through hole communicated with the upper stage is arranged at the upper part of the water inlet tank; the water drainage groove is arranged at the other end of the combined matrix layer pool, a third through hole communicated with the upper part of the combined matrix layer pool is formed in the upper part of the water drainage groove, the third through hole is positioned above the uppermost matrix of the combined matrix layer pool, the second through hole is higher than or equal to the third through hole in height, and a fourth through hole lower than the third through hole is further formed in the water drainage groove. The utility model forms the ecological constructed wetland with water flow upward and downward from the bottom of the combined substrate layer pool, so that the wastewater is fully contacted with the combined substrate, various physical mineralization, biochemistry and electrochemical sediments are facilitated to be settled at the bottom layer, and the removal of COD, ammonia nitrogen and total phosphorus in the wastewater is facilitated.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment of livestock and poultry slaughterhouses, in particular to a device for treating slaughter wastewater.
Background
The pig slaughtering wastewater mainly comes from the waste water of post-slaughtering cleaning, disintegration flushing, viscera cleaning, ground flushing, livestock manure wastewater and the like. The wastewater contains a large amount of organic substances, and the main components are as follows: organic matters such as animal manure, blood, animal viscera sundries, animal fur, broken skin and meat, grease and the like belong to high-concentration organic wastewater. The wastewater is brown-red and has stronger fishy smell. The substances such as fat, protein and the like in the wastewater are directly discharged into the water body without treatment, so that serious eutrophication is caused to the water body around the substances, and the self-recovery capability of the water body is seriously damaged. The black and odorous water body is caused, and the environment and agricultural irrigation are affected. In order to ensure normal production and sustainable development of slaughter enterprises and protect surrounding water environments, pollution environments and treatment problems of slaughter production wastewater must be emphasized. Because the pig slaughtering wastewater treatment is different from industrial wastewater treatment, especially the economic benefit of the fixed-point slaughter house of the first class of villages and towns is not high, the investment of the investment amount of wastewater treatment is limited, and a new technology for treating the pig slaughtering wastewater, which has the advantages of less investment, good treatment effect, capability of recycling part of resources and certain economic benefit, is required to be sought.
At present, the waste water treatment of pig slaughter houses has the traditional treatment process of utilizing anaerobic and aerobic biochemistry to remove organic matters, or combines mineralization, biochemistry and ecological plants to carry out optimization combination treatment on pig breeding waste water containing high ammonia nitrogen and high phosphorus, as disclosed in the prior art, the device (bulletin number is CN 215249859U) for treating pig breeding waste water by using ilmenite sand for strengthening an ecological filter tank, although the waste water can be evenly distributed and then flows downwards through a water inlet distribution pipe group and a breathing pipe pile, so that the waste water is evenly contacted with the ilmenite sand, part of biological carbon and a combined matrix of various biological flora attaching materials to treat the waste water, but the waste water is insufficiently contacted with the combined matrix to influence the adsorption and precipitation effects, and the removal effect on ammonia nitrogen and phosphorus is not ideal.
Therefore, a device with good slaughter wastewater treatment effect and low investment is needed.
Disclosure of utility model
Aiming at the defects existing in the prior art, the utility model aims to fully contact the ecological constructed wetland combined substrate with the wastewater, and the water flow flows upwards from the bottom of the combined substrate layer pool, so that the precipitate which is favorable for reaction is settled at the bottom layer, and the COD, ammonia nitrogen and total phosphorus in the wastewater are further removed.
In order to achieve the above object, the present utility model provides an apparatus for treating slaughter wastewater, comprising an ecological constructed wetland,
The ecological constructed wetland comprises: combining the substrate layer pool;
The water inlet tank is arranged at one end of the combined matrix layer pool, a first through hole communicated with the bottom of the combined matrix layer pool is formed in the bottom of the water inlet tank, and a second through hole communicated with the upper stage is formed in the upper part of the water inlet tank;
The drainage tank is arranged at the other end of the combined matrix layer pool, a third through hole communicated with the upper part of the combined matrix layer pool is formed in the upper part of the drainage tank, the third through hole is positioned above the uppermost matrix of the combined matrix layer pool, the second through hole is higher than or equal to the third through hole in height, and a fourth through hole lower than the third through hole is further formed in the drainage tank.
Preferably, the combined matrix layer pool comprises at least a mixed layer of iron ore particles and activated carbon particles and a manganese dioxide ore layer, and the mixed layer of iron ore particles and activated carbon particles is positioned below the manganese dioxide ore layer.
Preferably, the combined substrate layer pool further comprises a coarse limestone layer or cobble layer, a limestone and zeolite particle mixing layer and a river sand layer, wherein each layer of the combined substrate layer pool is sequentially provided with the coarse limestone layer or cobble layer, the iron ore particle and activated carbon particle mixing layer, the manganese dioxide ore layer, the limestone and zeolite particle mixing layer and the river sand layer from bottom to top; wherein the third through hole is positioned above the river sand layer.
Preferably, the river sand layer of the combined matrix layer pool is planted with aquatic plants.
Preferably, the anaerobic marsh gas treatment device further comprises an anaerobic marsh gas tank, an aeration adjusting tank, an air floatation device, a primary aerobic tank, a secondary aerobic tank, a sedimentation tank and a sludge drying tank, wherein the anaerobic marsh gas tank, the aeration adjusting tank, the air floatation device, the primary aerobic tank, the secondary aerobic tank, the sedimentation tank and the water inlet tank second through holes of the ecological constructed wetland are communicated sequentially from a wastewater inlet through pipelines, and the bottoms of the anaerobic marsh gas tank, the air floatation device, the primary aerobic tank and the sedimentation tank are communicated with the sludge drying tank through sludge pipelines.
Preferably, the ecological artificial wetland comprises two ecological artificial wetlands, namely a primary ecological artificial wetland and a secondary ecological artificial wetland, wherein the two ecological artificial wetlands have the same structure, and the second through hole of the water inlet tank of the primary ecological artificial wetland is communicated with the water outlet of the sedimentation tank; the fourth through hole of the drainage tank of the first-stage ecological constructed wetland is communicated with the second through hole of the water inlet tank of the second-stage ecological constructed wetland, and the fourth through hole of the drainage tank of the second-stage ecological constructed wetland is communicated with a water outlet well; the topography of the secondary ecological constructed wetland is lower than that of the primary ecological constructed wetland, and the second through hole of the secondary ecological constructed wetland is lower than that of the fourth through hole of the primary ecological constructed wetland.
Preferably, the ecological constructed wetland system further comprises a return pipe and a water pump, wherein the return pipe is arranged between the water drainage tank and the aeration regulating tank of the primary ecological constructed wetland, and the water pump is communicated with the return pipe and is used for pumping partial water body of the water drainage tank of the primary ecological constructed wetland to the aeration regulating tank.
Preferably, the aeration device comprises a blower and an aeration pipe, wherein the aeration pipe is communicated with the blower and is communicated with the aeration regulating tank, the primary aerobic tank and the secondary aerobic tank, and the blower is started to introduce air into the aeration regulating tank, the primary aerobic tank and the secondary aerobic tank.
The utility model has the beneficial effects that:
1. The utility model is provided with the connecting structure of the water inlet tank, the water drainage tank and the combined substrate layer pool to form the ecological constructed wetland with water flow upwards and downwards from the bottom of the combined substrate layer pool, so that the wastewater is soaked in each layer of the combined substrate layer pool and gradually diffused upwards, the wastewater is more fully contacted with the combined substrate, various physical mineralization, biochemistry and electrochemical sediments are settled at the bottom layer, and the removal of COD, ammonia nitrogen and total phosphorus in the wastewater is facilitated.
2. According to the utility model, the mixed layer of the iron ore particles and the activated carbon particles is arranged below the manganese dioxide ore layer, so that wastewater soaked in the mixed layer is flocculated and adsorbed firstly, and is beneficial to settling to the bottom of a tank, so that the coverage of flocculated substances on the manganese dioxide ore layer is reduced, and the removal effect of manganese ore on ammonia nitrogen, total phosphorus and COD is improved.
3. The ecological constructed wetland formed by the distribution characteristics of each layer of the combined substrate layer pool and the upward subsurface flow of water flow from the bottom is more fully contacted with the combined substrate, so that various complex and flocculating substances are facilitated to be settled at the bottom layer, the adsorption of manganese dioxide ore and zeolite on the upper layer on ammonia nitrogen, total nitrogen and total phosphorus is facilitated, and the removal of COD, ammonia nitrogen and total phosphorus in the wastewater is facilitated.
4. According to the utility model, the return pipe is arranged between the drainage tank and the aeration adjusting tank of the primary ecological constructed wetland, so that the water flow of the secondary ecological constructed wetland can be slowed down, the subsequent wastewater can be fully contacted with the next-stage combined substrate, the removal of COD, ammonia nitrogen and total phosphorus in the wastewater is facilitated, the use of the primary ecological constructed wetland can be fully utilized, the construction area of the overall ecological constructed wetland is reduced, and the investment cost is reduced.
Drawings
FIG. 1 is a schematic view of the construction of an implementation form of an ecological constructed wetland for an apparatus for treating slaughter wastewater according to the present utility model;
FIG. 2 is a schematic structural view of an implementation form of an apparatus for treating slaughter wastewater;
FIG. 3 is a schematic structural view of another implementation form of an apparatus for treating slaughter wastewater;
In the figure: an anaerobic methane tank 1; an aeration adjusting tank 2; an air floatation device 3; a primary aerobic tank 4; a secondary aerobic tank 5; a sedimentation tank 6; a first-stage ecological constructed wetland 7; a secondary ecological constructed wetland 8; a water outlet well 9; a sludge drying tank 10; a blower 11; a water inlet tank 701; a second through hole 702; a first through hole 703; a drain tank 704; fourth through hole 705; a third through hole 706; aquatic plants 707; a river sand layer 708; a mixed layer 709 of limestone and zeolite particles; a manganese dioxide ore layer 710; a mixed layer 711 of iron ore particles and activated carbon particles; a coarse lime layer or pebble layer 712.
Detailed Description
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
It should be noted that, in the description of the present utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The utility model is further described in conjunction with the following detailed description in order to make the technical means, the creation features, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1, the present utility model shows one implementation form of an apparatus for treating slaughter wastewater, which includes an ecological constructed wetland comprising: the combined matrix layer pool can be square or any other shape; a water inlet tank 701, which is arranged at one end of the combined substrate layer pool, wherein a first through hole 703 communicated with the bottom of the combined substrate layer pool is arranged at the bottom of the water inlet tank 701, and a second through hole 702 communicated with the upper stage is arranged at the upper part of the water inlet tank 701; the drainage tank 704 is arranged at the other end of the combined substrate layer pool, a third through hole 706 communicated with the upper part of the combined substrate layer pool is arranged at the upper part of the drainage tank 704, the third through hole 706 is positioned above the uppermost substrate of the combined substrate layer pool, the second through hole 702 is higher than or equal to the third through hole 706 in height, and a fourth through hole 705 lower than the third through hole 706 is further arranged on the drainage tank 704. When only one ecological constructed wetland is included, the fourth through hole 705 is communicated with the water outlet well 9, and if a plurality of ecological constructed wetlands are included, the fourth through hole 705 of the upper-stage ecological constructed wetland 7 is communicated with the second through hole 702 of the lower-stage ecological constructed wetland 7, the topography of the lower stage is lower than that of the upper stage, and the fourth through hole 705 of the final-stage ecological constructed wetland 7 is communicated with the water outlet well 9 to perform standard drainage.
The utility model is provided with the connection structure of the water inlet tank 701, the water outlet tank 704 and the combined substrate layer pool to form the ecological constructed wetland with water flow upward and down-flowing from the bottom of the combined substrate layer pool, so that the wastewater is soaked in each layer of the combined substrate layer pool and gradually diffused upward, the wastewater is more fully contacted with the combined substrate, various physical mineralization, biochemistry and electrochemical sediment are settled on the bottom layer, and the removal of COD, ammonia nitrogen and total phosphorus in the wastewater is facilitated.
The implementation process of the utility model is as follows: the slaughter wastewater after the upper treatment flows into the water inlet groove 701, flows into the bottom of the combined matrix layer pool from the bottom of the water inlet groove 701, slowly submerges each layer of the combined matrix layer pool from bottom to top, fully contacts and reacts with the combined matrix, and sediments in the bottom layer by utilizing the reaction sediment, so that the water body flowing out of the uppermost layer of the combined matrix layer pool is treated more cleanly. Then, the water flowing out of the uppermost layer of the combined matrix layer pool flows into the drainage tank 704 through the third through hole 706, and then flows into the water outlet well 9 from the fourth through hole 705 of the drainage tank 704, so that the water can reach the standard for drainage. The main pollutants CODcr of slaughter wastewater after the upper-level treatment can reach below 60mg/L, ammonia nitrogen can reach about 30mg/L, total phosphorus can reach about 20mg/L, the main pollutants CODcr of water body of a water outlet well 9 can reach below 40mg/L, ammonia nitrogen can reach below 10mg/L, and total phosphorus can reach about 1 mg/L. The treated water discharge reaches the first-level discharge standard in the "discharge Standard for Water pollutants for meat processing" of the family (GB 13457-92).
On the basis of the realization form, the combined matrix layer pool at least comprises a mixed layer 711 of iron ore particles and activated carbon particles and a manganese dioxide ore layer 710, wherein the mixed layer 711 of iron ore particles and activated carbon particles is positioned below the manganese dioxide ore layer 710. The iron ore particles are magnesite sand with the iron content of 0.1Femg/mg, and iron and carbon can form micro electrolysis.
On the basis of the realization form, the combined matrix layer pool further comprises a coarse limestone layer or cobble layer 712, a mixed layer 709 of limestone and zeolite particles and a river sand layer, wherein each layer of the combined matrix layer pool is sequentially provided with the coarse limestone layer or cobble layer 712, the mixed layer 711 of iron ore particles and activated carbon particles, a manganese dioxide ore layer 710, the mixed layer 709 of limestone and zeolite particles and the river sand layer 708 from bottom to top; wherein the third through hole 706 is located above the river sand layer.
In a specific mode, the thickness of the river sand layer 708 is about 10cm, and the river sand layer is composed of river sand;
the thickness of the mixed layer 709 of limestone and zeolite particles is about 20cm, the particle size of the limestone particles is 6-10 mm, the particle size of the zeolite particles is 0.5-1.5 mm, and the zeolite: limestone weight ratio >1:1
The thickness of the manganese dioxide ore layer 710 is about 30cm, and the particle size is 1-10 mm;
The thickness of the mixed layer 711 of iron ore particles and activated carbon particles is about 30cm, and the weight ratio of the iron ore particles to the activated carbon particles is 4-5: 1, a step of;
The thickness of the coarse lime layer or cobble layer 712 is about 30cm, and the particle size of cobble or coarse limestone particles is 25-55 mm.
The ecological constructed wetland formed by the distribution characteristics of each layer of the combined substrate layer pool and the upward subsurface flow of water flow from the bottom is more fully contacted with the combined substrate, so that various complex and flocculating substances are facilitated to be settled at the bottom layer, the adsorption of manganese dioxide ore and zeolite on the upper layer on ammonia nitrogen, total nitrogen and total phosphorus is facilitated, and the removal of COD, ammonia nitrogen and total phosphorus in the wastewater is facilitated.
On the basis of the realization form, aquatic plants 707 are planted on the river sand layer 708 of the combined matrix layer pool.
On the basis of the implementation form, as shown in fig. 1-2, the anaerobic biogas digester also comprises an anaerobic biogas digester 1, an aeration adjusting tank 2, an air flotation device 3, a primary aerobic tank 4, a secondary aerobic tank 5, a sedimentation tank 6 and a sludge drying tank 10, wherein the anaerobic biogas digester 1, the aeration adjusting tank 2, the air flotation device 3, the primary aerobic tank 4, the secondary aerobic tank 5, the sedimentation tank 6 and a water inlet tank 701 second through hole 702 of the ecological constructed wetland are sequentially communicated from a wastewater inlet through pipelines, and the bottoms of the anaerobic biogas digester 1, the air flotation device 3, the primary aerobic tank 4 and the sedimentation tank 6 are communicated with the sludge drying tank 10 through sludge pipelines.
The wastewater entering the ecological constructed wetland sequentially passes through an anaerobic methane tank 1, an aeration adjusting tank 2, an air floatation device 3, a primary aerobic tank 4, a secondary aerobic tank 5 and a sedimentation tank 6, and then enters the ecological constructed wetland. And a lifting pump can be arranged on a pipeline between the aeration adjusting tank 2 and the air floatation device 3, and can be used for lifting sewage into the air floatation device 3 and controlling the water flow speed of the treated sewage. In the scheme without a lifting pump, the valve of the pipeline can be adjusted to control the water flow speed of the treated wastewater.
On the basis of the implementation form, as shown in fig. 1 and 3, the ecological constructed wetland comprises two ecological constructed wetlands, namely a primary ecological constructed wetland 7 and a secondary ecological constructed wetland 8, which have the same structure, and a second through hole 702 of a water inlet tank 701 of the primary ecological constructed wetland 7 is communicated with a water outlet of a sedimentation tank 6; the fourth through hole of the drainage tank of the primary ecological constructed wetland 7 is communicated with the second through hole of the water inlet tank 701 of the secondary ecological constructed wetland 8, and the fourth through hole of the drainage tank 704 of the secondary ecological constructed wetland 8 is communicated with the water outlet well 9; the topography of the secondary ecological artificial wetland 8 is lower than that of the primary ecological artificial wetland 7, and the second through hole of the secondary ecological artificial wetland 8 is lower than that of the fourth through hole of the primary ecological artificial wetland 7, so that water flow overflow between the ecological artificial wetlands at all levels is performed.
On the basis of the realization form, the sewage treatment device further comprises a return pipe and a water pump, wherein the return pipe is arranged between the water drainage tank 704 of the primary ecological constructed wetland 7 and the aeration adjusting tank 2, the water pump is communicated with the return pipe and used for pumping partial water body of the water drainage tank 704 of the primary ecological constructed wetland 7 to the aeration adjusting tank 2, so that water flow of the secondary ecological constructed wetland 8 can be slowed down, the subsequent wastewater is contacted with a next-stage combined substrate more fully, removal of COD, ammonia nitrogen and total phosphorus in the wastewater is facilitated, the using effect of the primary ecological constructed wetland 7 can be fully utilized, the whole ecological constructed wetland area can be reduced, and investment cost is reduced.
On the basis of the realization mode, the aeration device comprises a blower 11 and an aeration pipe, wherein the aeration pipe is communicated with the blower 11 and is communicated with the aeration regulating tank 2, the primary aerobic tank 4 and the secondary aerobic tank 5, and the aeration regulating tank 2, the primary aerobic tank 4 and the secondary aerobic tank 5 are filled with air by starting the blower 11.
The specific implementation process of the utility model is as follows: slaughter wastewater flows into the anaerobic methane tank 1 through a factory sewage disposal ditch inlet, and biogas slurry mixture liquid overflows into the aeration adjusting tank 2 after the wastewater is treated by the anaerobic methane tank 1; the aeration regulating tank 2 uses a lifting pump to uniformly lift the wastewater into the air floatation device 3 as required for solid-liquid separation treatment; the wastewater automatically flows into a primary aerobic tank 5 and a secondary aerobic tank 5 for further biochemical treatment through the water outlet of the air floatation device 3, and scum and slag discharged from the bottom are discharged into a sludge drying tank 10; the wastewater automatically flows into a sedimentation tank 6 to carry out solid-liquid separation after passing through a primary aerobic tank 5 and a secondary aerobic tank 5; the supernatant fluid of the sedimentation tank 6 automatically flows into the primary ecological constructed wetland 7 and the secondary ecological constructed wetland 8 for further biochemical treatment, and the water energy after the advanced treatment of the primary ecological constructed wetland 7 and the secondary ecological constructed wetland 8 can reach the standard and be discharged.
Notably, are: the anaerobic methane tank 1 is of a site building reinforced concrete structure and is buried underground and built under a road or a parking place; a filter screen is arranged at the inlet of the anaerobic methane tank 1 to remove sundries such as big leaf technical strips, crude fiber matters and the like scattered in the wastewater in a coarse isolation way.
Notably, are: the anaerobic biogas digester 1 is an anaerobic treatment biochemical reactor for hydrolyzing, acidifying, producing acid and gas from pig slaughter production wastewater, and converts and decomposes macromolecular organic matters into inorganic biogas (methane, carbon dioxide, nitrogen and the like) through anaerobic bacteria and methane bacteria; the biogas generated by the anaerobic biogas digester 1 is used for heating hot water for pig slaughtering production.
Notably, are: the aeration adjusting tank 2 is of a site building reinforced concrete structure and is buried underground and is built under a road or a parking place; the aeration device in the aeration regulating tank 2 needs to be started at fixed time, so that the tank is not hardened and deposited, and the anoxic state in the tank is maintained.
Notably, are: the air floatation device 3 is integrated equipment, is arranged above the ground, can automatically flow out water into the primary and secondary aerobic tanks 5, and can automatically flow out scum into the sludge drying tank 10.
Notably, are: 1. the secondary aerobic tank 5 is a biological reaction tank with a site building reinforced concrete structure, a large amount of biological filler is arranged in the biological reaction tank, and organic substances, part of ammonia nitrogen and phosphorus in the wastewater are removed by using activated sludge flora of biological nitrifying bacteria and denitrifying bacteria in the high-load oxygenation aeration environment, so that the secondary aerobic tank is a main reactor for biologically and biochemically treating the wastewater.
Notably, are: the sedimentation tank 6 is a biological reaction tank of a site building steel-concrete structure; the wastewater automatically flows into a first-stage ecological constructed wetland 7 and a second-stage ecological constructed wetland 8; the precipitated activated sludge is lifted to the front section of the primary and secondary aerobic tanks 5 by a sludge pump, and the residual sludge is discharged to the sludge drying tank 10.
Notably, are: the primary ecological artificial wetland 7 and the secondary ecological artificial wetland 8 are in site building brick-concrete structures, the front end and the rear end of the primary ecological artificial wetland 7 and the secondary ecological artificial wetland 8 are respectively provided with a water inlet tank 701 and a water outlet tank 704, a combined matrix layer which mainly contains natural manganese dioxide and iron ore and is made of biological flora attachment materials is filled in the middle of a combined matrix layer pool of the primary ecological artificial wetland 7 and the secondary ecological artificial wetland 8, and aquatic plants 707 are planted on the surfaces of the primary ecological artificial wetland 7 and the secondary ecological artificial wetland 8.
The ecological artificial wetland formed by the distribution characteristics of each layer of the first-stage ecological artificial wetland 7 and the second-stage ecological artificial wetland 8 and the upward undercurrent of water flow from the bottom makes the wastewater fully contacted with the combined matrix, is beneficial to sedimentation of various complexes and flocculate substances on the bottom layer, and utilizes the gap drainage program of a slaughter wastewater treatment system to perform dry-wet alternate filtration, permeation, mineralization, biological nitrification and denitrification in the matrix layer and oxidation, adsorption and absorption of plant root system biomembrane to remove phosphorus, ammonia nitrogen, organic matters and decolorization in the wastewater, so that the water quality is further purified.
Notably, are: the sludge drying tank 10 is of a site building brick-concrete structure and is used for receiving redundant biogas slurry in the anaerobic biogas digester 1; the floating device 3 carries out the sun-drying and disinfection of the scum sludge and the residual sludge of the sedimentation tank 6, and the dried slag can be used for composting to produce organic fertilizer.
The specific embodiment is as follows: the anaerobic methane tank 1, the first-stage aerobic tank and the second-stage aerobic tank 5 are utilized, the sedimentation tank 6 is a main reactor for biochemical treatment of biochemical active sludge bacteria, the functions of bacterial colony treatment of biological anaerobic and aerobic active sludge are fully utilized, and the purpose of purifying wastewater is achieved by sedimentation and ecological artificial wetland.
The device for treating slaughter wastewater is applied to the ecological purification engineering of slaughter production wastewater of pig slaughter companies in the north of Pubei county in Qin, guangxi province, and the novel process technology has the following advantages from the running condition and the running effect:
1) The device for treating slaughter wastewater is developed and applied, and the treatment wastewater of the pig slaughter wastewater reaches the first-level discharge standard in national institute of standards for discharge of pollutants in meat processing industry (GB 13457-92).
2) The system has unique dephosphorization, denitrification and decoloration, is a mineralization, biochemistry and ecology primary ecological constructed wetland 7 and secondary ecological constructed wetland 8 treatment system, and effectively solves the difficult problem of high phosphorus and ammonia nitrogen removal in the current pig slaughtering wastewater treatment process. The ecological treatment of the method has obvious effect of removing phosphorus and nitrogen in slaughter sewage.
3) The sewage treatment ecological units of the first-stage ecological constructed wetland 7 and the second-stage ecological constructed wetland 8 have remarkable sewage treatment effect, and meanwhile, the benefits of different seasons and stubbles of ecological constructed wetland plants (such as leaf vegetables) are obtained, so that ecological recycling is realized.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The device for treating slaughter wastewater comprises an ecological constructed wetland, and is characterized in that the ecological constructed wetland comprises:
Combining the substrate layer pool;
The water inlet tank is arranged at one end of the combined matrix layer pool, a first through hole communicated with the bottom of the combined matrix layer pool is formed in the bottom of the water inlet tank, and a second through hole communicated with the upper stage is formed in the upper part of the water inlet tank;
The drainage tank is arranged at the other end of the combined matrix layer pool, a third through hole communicated with the upper part of the combined matrix layer pool is formed in the upper part of the drainage tank, the third through hole is positioned above the uppermost matrix of the combined matrix layer pool, the second through hole is higher than or equal to the third through hole in height, and a fourth through hole lower than the third through hole is further formed in the drainage tank.
2. An apparatus for treating slaughter wastewater according to claim 1, characterised in that the combined matrix layer pool comprises at least a mixed layer of iron ore particles and activated carbon particles and a manganese dioxide ore layer, the mixed layer of iron ore particles and activated carbon particles being located below the manganese dioxide ore layer.
3. The apparatus for treating slaughter wastewater according to claim 2, wherein the combined substrate layer pool further comprises a coarse limestone layer or cobble layer, a limestone and zeolite particle mixed layer and a river sand layer, and each layer of the combined substrate layer pool is a coarse limestone layer or cobble layer, a mixed layer of iron ore particles and activated carbon particles, a manganese dioxide ore layer, a limestone and zeolite particle mixed layer and a river sand layer from bottom to top in sequence; wherein the third through hole is positioned above the river sand layer.
4. A slaughter wastewater treatment apparatus according to claim 3, wherein the river sand layer of the combined matrix layer pond is planted with aquatic plants.
5. The slaughter wastewater treatment device according to any one of claims 1 to 4, further comprising an anaerobic methane tank, an aeration adjusting tank, an air floatation device, a primary aerobic tank, a secondary aerobic tank, a sedimentation tank and a sludge drying tank, wherein the anaerobic methane tank, the aeration adjusting tank, the air floatation device, the primary aerobic tank, the secondary aerobic tank, the sedimentation tank and the water inlet tank second through holes of the ecological artificial wetland are communicated sequentially from a wastewater inlet through pipelines, and the bottoms of the anaerobic methane tank, the air floatation device, the primary aerobic tank and the sedimentation tank are communicated with the sludge drying tank through sludge pipelines.
6. The slaughter wastewater treatment device according to claim 5, wherein the ecological artificial wetland comprises two ecological artificial wetlands, namely a primary ecological artificial wetland and a secondary ecological artificial wetland, the two ecological artificial wetlands have the same structure, and the second through hole of the primary ecological artificial wetland water inlet tank is communicated with the water outlet of the sedimentation tank; the fourth through hole of the drainage tank of the first-stage ecological constructed wetland is communicated with the second through hole of the water inlet tank of the second-stage ecological constructed wetland, and the fourth through hole of the drainage tank of the second-stage ecological constructed wetland is communicated with a water outlet well; the topography of the secondary ecological constructed wetland is lower than that of the primary ecological constructed wetland, and the second through hole of the secondary ecological constructed wetland is lower than that of the fourth through hole of the primary ecological constructed wetland.
7. The slaughter wastewater treatment apparatus according to claim 6, further comprising a return pipe and a water pump, wherein the return pipe is provided between the water discharge tank and the aeration adjustment tank of the primary ecological constructed wetland, and the water pump is communicated with the return pipe for pumping a water body of the water discharge tank portion of the primary ecological constructed wetland to the aeration adjustment tank.
8. An apparatus for treating slaughter wastewater according to claim 6 or 7, comprising a blower and an aeration pipe, wherein the aeration pipe is communicated with the blower and is communicated with the aeration adjusting tank, the primary aerobic tank and the secondary aerobic tank, and the aeration adjusting tank, the primary aerobic tank and the secondary aerobic tank are aerated by starting the blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322607663.7U CN220845842U (en) | 2023-09-26 | 2023-09-26 | Device for treating slaughter wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322607663.7U CN220845842U (en) | 2023-09-26 | 2023-09-26 | Device for treating slaughter wastewater |
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| CN220845842U true CN220845842U (en) | 2024-04-26 |
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| CN202322607663.7U Active CN220845842U (en) | 2023-09-26 | 2023-09-26 | Device for treating slaughter wastewater |
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