CN215249859U - Live pig breeding wastewater treatment device using ilmenite sand for strengthening ecological filter tank - Google Patents
Live pig breeding wastewater treatment device using ilmenite sand for strengthening ecological filter tank Download PDFInfo
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- CN215249859U CN215249859U CN202120948355.9U CN202120948355U CN215249859U CN 215249859 U CN215249859 U CN 215249859U CN 202120948355 U CN202120948355 U CN 202120948355U CN 215249859 U CN215249859 U CN 215249859U
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- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a be used for strengthening the live pig breeding effluent treatment plant in ecological filter with ilmenite sand, include: when the ecological filter tank is a first stage, an ilmenite sand layer is arranged in the ecological filter tank; when the ecological filter tanks are in multiple stages, an ilmenite sand layer is arranged in at least one stage of ecological filter tank, a water outlet of the previous stage of ecological filter tank is communicated with a water inlet of the next stage of ecological filter tank, and a water inlet and a water outlet of each stage of ecological filter tank are respectively positioned above and below the corresponding ilmenite sand layer. The utility model discloses make full use of biological anaerobism, the biochemical treatment technique of aeration oxidation in advance to combine the mineralization in the ecological filter pond, biological good oxygen, facultative, the effect of anaerobism bacterial, and the effect of biological ecological combination such as aquatic plant root system oxidation, absorption, get rid of ammonia nitrogen, phosphorus and organic substance in the live pig breeding waste water, scientifically utilized anaerobism and the biochemical treatment of good oxygen and the ecological filtration of matrix, the absorptive processing advantage of ecological plant.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment. More specifically, the utility model relates to a pig breeding wastewater treatment device which uses ilmenite sand to reinforce an ecological filter.
Background
With the development of animal husbandry in China, the large-scale and intensive development of the animal husbandry becomes a necessary trend, and large-scale farms have higher livestock and poultry raising technology and unified management, can reduce the cost and improve the economic benefit. However, the excrement and urine and the waste water of the pig breeding industry contain a large amount of organic matters, nitrogen, phosphorus, suspended matters and pathogenic bacteria, and generate foul odor, which greatly affects the environmental quality. The treatment of excrement, urine and excrement in southern provinces of China, especially in the two-wide pig breeding industry, adopts a method of manually cleaning excrement and then flushing residues with water, but the treatment is necessary because the water consumption is high in hot weather and the water pollution is large. Because the wastewater treatment of the live pig farm is different from the industrial sewage treatment, the economic benefit of the live pig farm is not high, the investment of the investment amount of the wastewater treatment is limited, and a new wastewater treatment technology of the live pig farm, which has the advantages of low investment, good treatment effect, partial resource recovery and certain economic benefit, needs to be found.
At present, the wastewater treatment of pig farms usually adopts the following conventional treatment methods and treatment processes: (1) a live pig farm manure-marsh-fruit (grass, forest and vegetable) cultivation treatment mode; (2) a combined stable pond culture wastewater treatment process; (3) UASB/biological contact purification treatment process.
Although the traditional anaerobic and aerobic biochemical treatment system has the advantage of removing organic matters, the removal efficiency is not high for treating the pig breeding wastewater containing high ammonia nitrogen and high phosphorus.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be used for strengthening the live pig breeding effluent treatment plant in ecological filter with ilmenite sand, through the mineralize mineralization in the ecological filter, biological good oxygen, facultative oxygen, anaerobism bacterial's effect to and biological ecological combined action such as aquatic plant root oxidation, absorption, ammonia nitrogen, phosphorus and organic substance in getting rid of the live pig breeding waste water, the ecological processing advantage of filtering, ecological plant absorption of biochemical treatment and matrix of anaerobism and good oxygen has been used scientifically.
In order to achieve these objects and other advantages in accordance with the present invention, there is provided a live pig breeding wastewater treatment apparatus using ilmenite sand for reinforcing an ecological filter, comprising:
when the ecological filter tank is a first stage, an ilmenite sand layer is arranged in the ecological filter tank; when the ecological filter tanks are in multiple stages, an ilmenite sand layer is arranged in at least one stage of ecological filter tank, a water outlet of the previous stage of ecological filter tank is communicated with a water inlet of the next stage of ecological filter tank, and a water inlet and a water outlet of each stage of ecological filter tank are respectively positioned above and below the corresponding ilmenite sand layer.
Preferably, the pig breeding wastewater treatment device using ilmenite sand for reinforcing the ecological filter tank is characterized in that the ilmenite sand layer is composed of a mixed layer of ilmenite sand and calcium carbonate particles and a mixed layer of ilmenite sand and biological carbon, the mixed layer of ilmenite sand and calcium carbonate particles is laid on the mixed layer of ilmenite sand and biological carbon, and the mixed layer of ilmenite sand and calcium carbonate particles is formed by mixing calcium carbonate particles and ilmenite sand in a mass ratio of 2-4: 1, the thickness of the mixture is 300-450 mm, and the mixed layer of the ilmenite sand and the biological carbon is formed by mixing the biological carbon and the ilmenite sand according to the mass ratio of 2-4: 1 and the thickness is 300-450 mm.
Preferably, in the live pig breeding wastewater treatment device using ilmenite sand for strengthening the ecological filter tank, a river sand layer, a mixed layer of ilmenite sand and calcium carbonate particles, a mixed layer of ilmenite sand and biological carbon, a mixed layer of calcium carbonate and zeolite particles and a calcium carbonate particle layer are sequentially laid in the ecological filter tank with the ilmenite sand layer from top to bottom, wherein the thickness of the river sand layer is 200-350 mm, and the mixed layer of calcium carbonate and zeolite particles is formed by mixing calcium carbonate and zeolite particles according to a mass ratio of 2-4: 1, and the thickness of the calcium carbonate particle layer is 200-350 mm.
Preferably, in the live pig breeding wastewater treatment device using the ilmenite sand for the reinforced ecological filter, the particle size of the zeolite particles is 0.5-1.5 mm, the diameters of the calcium carbonate particles in the mixed layer of the ilmenite sand and the calcium carbonate particles and the mixed layer of the calcium carbonate and the zeolite particles are both 6-10 mm, and the particle size of the calcium carbonate in the calcium carbonate particle layer is 25-55 mm.
Preferably, the pig breeding wastewater treatment device using ilmenite sand to reinforce the ecological filter further comprises:
a grid tank;
a micro-filter connected with the grid pond;
the black film anaerobic tank is connected with the micro-filter;
the pre-aeration tank is connected with the black film anaerobic tank;
and the sedimentation tank is respectively connected with the pre-aeration tank and the water inlet of the first-stage ecological filter tank.
Preferably, in the pig breeding wastewater treatment device using ilmenite sand to reinforce the ecological filter, when the ecological filter is in multiple stages, an ilmenite sand layer is arranged in each stage of ecological filter.
Preferably, the pig breeding wastewater treatment device using ilmenite sand to reinforce the ecological filter further comprises:
the drying tank is respectively connected with the sedimentation tank and the grid tank;
and the water outlet tank is connected with a water outlet of the last stage of ecological filter tank.
Preferably, in the pig breeding wastewater treatment device using ilmenite sand to reinforce the ecological filter, when the ecological filter is multi-stage, the water outlet of the previous ecological filter is positioned above the water inlet of the next ecological filter.
Preferably, in the pig breeding wastewater treatment device using ilmenite sand to reinforce the ecological filter tanks, each stage of the ecological filter tanks further comprises:
the water inlet and distribution pipe group is arranged in the river sand layer, and when the ecological filter tanks are in a multi-stage mode, the water outlet of the previous stage of ecological filter tank is communicated with the water inlet of the water inlet distribution pipe group of the next stage of ecological filter tank;
the water collecting troughs are arranged at the bottom of the ecological filter tank side by side and are arched, a plurality of water outlet holes are formed in the water collecting troughs at intervals, and the water collecting troughs are parallel to each other;
a plurality of breathing pipe piles are arranged at intervals, each breathing pipe pile is vertically arranged, the top of each breathing pipe pile is positioned above the ecological filter tank, and the bottom of each breathing pipe pile penetrates through a water collecting tank below the breathing pipe pile and is communicated with a corresponding water collecting tank;
and the water drainage tank is positioned on one side of the ecological filter tank and communicated with each water collection tank, and a water outlet of the ecological filter tank is arranged on the water drainage tank.
Preferably, in the device for treating the pig breeding wastewater by using the ilmenite sand for strengthening the ecological filter, the collecting water tank is in a semicircular cylinder shape.
The utility model discloses at least, include following beneficial effect:
the utility model discloses ferrous titanate material in the ecological filter both is the carrier of microorganism, is anaerobic microorganism electron donor again, handles waste water under the mode of the fixed filter bed of filled type, and the anaerobism bacterial liquid that is the main of ferrooxidans through introducing the inoculation nitrate is the ferrous iron in the microorganism used ferrotitanium ore sand as the electron donor under the anaerobic condition, has the reduction nitrate and be nitrogen gas and to the adsorption of phosphorus. Ilmenite sand FeTio3The (ferrous titanate) has the functions of strengthening the treatment efficiency of the pig breeding wastewater and removing nitrate nitrogen and phosphate simultaneouslyThe application is as follows.
The utility model discloses make full use of biological anaerobism, the biochemical treatment technique of aeration oxidation in advance to combine the mineralization in the ecological filter pond, biological good oxygen, facultative, the effect of anaerobism bacterial, and the effect of biological ecological combination such as aquatic plant root system oxidation, absorption, get rid of ammonia nitrogen, phosphorus and organic substance in the live pig breeding waste water, scientifically utilized anaerobism and the biochemical treatment of good oxygen and the ecological filtration of matrix, the absorptive processing advantage of ecological plant.
The utility model discloses not only have biological and ecological treatment and purify the efficiency of live pig plant waste water, simultaneously, also provide the nutrient for aquatic plant, promoted aquatic plant's growth, breed, have ecological sewage treatment's unique effect, replaced ammonia nitrogen desorption, phosphorus removal device and the medicine desorption apparatus etc. in the traditional live pig plant sewage treatment facility, saved the investment of live pig cultivation waste water treatment engineering construction, reduced land area occupied, reduced and handled the running cost.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of a pig breeding wastewater treatment plant using ilmenite sand for an enhanced ecological filter according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an ecological filter according to an embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in figure 1 and figure 2, the utility model provides a pig breeding wastewater treatment device which uses ilmenite sand to strengthen an ecological filter, comprising:
at least one stage of ecological filter 1, when the ecological filter 1 is a first stage, an ilmenite sand layer is arranged in the ecological filter 1; when the ecological filter tanks 1 are multistage, ilmenite sand layers are arranged in at least one stage of the ecological filter tanks 1, the water outlets of the previous stage of the ecological filter tanks 1 are communicated with the water inlets of the next stage of the ecological filter tanks 1, so that sewage can be treated step by step through all stages of the ecological filter tanks 1, the water inlets and the water outlets of all stages of the ecological filter tanks 1 are respectively positioned above and below the ilmenite sand layers corresponding to the water inlets and the water outlets, and sewage in the ecological filter tanks 1 can be treated through the ilmenite sand layers.
The ferrous titanate material in the ecological filter tank 1 is a carrier of microorganism and an anaerobic microorganism electron donor, wastewater is treated in a filling type fixed filter bed mode, anaerobic strain liquid mainly containing ferric oxide bacteria inoculated with nitrate is introduced, and the microorganism takes ferrous iron in ilmenite sand as the electron donor under the anaerobic condition, so that the microorganism has the functions of reducing nitrate into nitrogen and adsorbing phosphorus. Ilmenite sand FeTio3The (ferrous titanate) has the ecological purification treatment function of removing nitrate nitrogen and phosphate while enhancing the treatment efficiency of the pig breeding wastewater.
The ecological filter tank 1 makes full use of the root system of the aquatic plant and the active microbial flora to directly absorb, intercept and degrade suspended matters in the wastewater, thereby achieving the purpose of deeply removing organic substances, ammonia nitrogen and phosphorus. Meanwhile, the nutrient and entropy required by the growth of the aquatic plants on the surface of the ecological filter tank 1 can be met, and the growth, propagation and wastewater treatment effects of the aquatic plants are improved.
The utility model discloses plant various aquatic plants on ecological filter 1 surface, the ecological characteristic and the advantage of make full use of ore sand oxidation, matrix absorption, biological activity mud and aquatic plant root system handle live pig plant waste water, have further improved purifying effect, have solved the difficult problem that the waste water treatment of live pig breeding crowned ammonia nitrogen, high phosphorus got rid of simultaneously effectively.
In another technical scheme, the ilmenite sand is used in the live pig breeding wastewater treatment device for strengthening the ecological filter tank, the ilmenite sand layer is composed of a mixed layer of ilmenite sand and calcium carbonate particles and a mixed layer of ilmenite sand and biological carbon, the mixed layer of ilmenite sand and calcium carbonate particles is laid on the mixed layer of ilmenite sand and biological carbon, and the mixed layer of ilmenite sand and calcium carbonate particles is formed by mixing calcium carbonate particles and ilmenite sand according to the mass ratio of 2-4: 1, the thickness of the mixture is 300-450 mm, and the mixed layer of the ilmenite sand and the biological carbon is formed by mixing the biological carbon and the ilmenite sand according to the mass ratio of 2-4: 1 and the thickness is 300-450 mm.
In another technical scheme, in the device for treating the pig breeding wastewater by using ilmenite sand to reinforce the ecological filter tank, a river sand layer 105, a mixed layer 106 of ilmenite sand and calcium carbonate particles, a mixed layer 107 of ilmenite sand and biological carbon, a mixed layer 108 of calcium carbonate and zeolite particles and a calcium carbonate particle layer 109 are sequentially laid in the ecological filter tank 1 with the ilmenite sand layer from top to bottom, wherein the thickness of the river sand layer is 200-350 mm, and the mixed layer of calcium carbonate and zeolite particles is formed by mixing calcium carbonate and zeolite particles according to a mass ratio of 2-4: 1, and the thickness of the calcium carbonate particle layer is 200-350 mm. The method utilizes the mineralization and the biochemistry of the ilmenite sand and the combination matrix and the ecological characteristics and advantages of the root system of the aquatic plant to treat and purify the wastewater of the pig farm.
The ecological filter tank 1 is internally provided with FeTio which is configured in proportion3The matrix layer is mixed with various biological flora adhesion materials such as C, Si, Ca, Mg elements, zeolite and the like, and various active microbial floras in the ecological filter tank 1 directly absorb, intercept and degrade organic substances, ammonia nitrogen and phosphorus in the wastewater, so that the water quality is further purified.
The ecological filter tank 1 is formed by filling ilmenite sand, part of biological carbon and various biological flora adhesion materials into a combined substrate, and various aquatic plants are planted on the surface of the ecological filter tank 1.
The utility model discloses the ecological characteristics and the advantage of make full use of ore sand oxidation and matrix absorption, biological activated sludge and aquatic plant root system handle live pig plant waste water. Further improving the purification effect and effectively solving the problem of removing high ammonia nitrogen and high phosphorus in the pig breeding wastewater.
The ecological filter tank 1 runs alternately dry and wet, separates suspended matters (SS), reduces organic substances (CODcr), removes ammonia nitrogen and phosphorus and improves the purification efficiency of wastewater under the actions of mineralization of a ilmenite sand combined matrix and biological anaerobic, facultative and aerobic strains.
In another technical scheme, in the live pig breeding wastewater treatment device using the ilmenite sand to reinforce the ecological filter tank, the particle size of the zeolite particles is 0.5-1.5 mm, the diameters of calcium carbonate particles in a mixed layer of the ilmenite sand and the calcium carbonate particles and a mixed layer of the calcium carbonate and the zeolite particles are both 6-10 mm, and the particle size of calcium carbonate in the calcium carbonate particle layer is 25-55 mm.
In another technical scheme, the device for treating the pig breeding wastewater by using ilmenite sand to reinforce an ecological filter tank further comprises:
a grid tank 2;
a micro-filter 3 connected with the grid pond 2;
the black film anaerobic tank 4 is connected with the micro-filter 3;
the pre-aeration tank 5 is connected with the black film anaerobic tank 4;
and the sedimentation tank 6 is respectively connected with the pre-aeration tank 5 and the water inlet of the first-stage ecological filter tank 1. The wastewater is condensed and separated by the intermediate sedimentation tank 6, suspended matters (SS) in the wastewater of the farm are removed, and sludge rich in ammonia nitrogen and phosphorus in the anaerobic effluent is discharged, so that the purpose of purifying the water quality is achieved.
The grid pond 2 (grid collecting well) is a steel-concrete structure of a site building, and the grid pond 2 isolates and removes miscellaneous inclusions such as tree leaves, wood strips, coarse fibers and the like scattered in the wastewater. The wastewater is lifted to a micro-filter 3 (wastewater slag-water micro-separator) by a pump for separation and deslagging. The separated sewage flows into a black film anaerobic tank 4, the black film anaerobic tank 4 is manufactured by carrying out thermal welding on black film materials and belongs to a non-standard biological reaction container, a black film anaerobic biogas digester carries out anaerobic treatment on the pig breeding wastewater, and macromolecular organic matters are converted and decomposed into low-molecular organic matters through anaerobic bacteria and methane bacteria; the biogas generated by the black film anaerobic tank 4 can be used for heating hot water for pig breeding. The water from the black film anaerobic tank 4 is pumped to the pre-aeration tank 5 by a water pump for aeration and oxidation so as to promote the oxidation and flocculation of suspended matters (SS) and other substances in the wastewater and improve the sedimentation and clarification of the intermediate sedimentation tank 6 of the subsequent unit.
The black film anaerobic tank 4 and the pre-aeration tank 5 mainly use methane bacteria, nitrobacteria and denitrifying bacteria in the biological activated sludge to convert and degrade and remove organic substances in the sewage, and are main reactors for biochemical treatment.
The grating pool 2 intercepts sundries such as leaves, twigs, coarse fibers and the like in the excrement, then the sewage is pumped to the micro-filter 3 for deslagging, the separated sewage flows into the black film anaerobic pool 4 for anaerobic degradation, and a large amount of methane generated by anaerobic treatment is reused for cultivation production. The degraded sewage is pumped to a preaeration tank 5 by a water pump for preaeration, the aerated sewage is sent to a sedimentation tank 6 by a water pump, sludge and water are separated in the sedimentation tank 6, and the separated sewage is treated by a multi-stage ecological filter tank 1.
In another technical scheme, in the device for treating the live pig breeding wastewater by using the ilmenite sand to strengthen the ecological filter, when the ecological filter 1 is in a multi-stage mode, an ilmenite sand layer is arranged in each stage of the ecological filter 1.
In another technical scheme, the device for treating the pig breeding wastewater by using ilmenite sand to reinforce an ecological filter tank further comprises:
the drying tank 7 is respectively connected with the sedimentation tank 6 and the grating tank 2;
and the water outlet tank 8 is connected with the water outlet of the last stage of ecological filter tank 1.
The grating pool 2 intercepts sundries such as leaves, twigs, coarse fibers and the like in the excrement, then the sewage is pumped to a mechanical micro-filter 3 for deslagging, the separated sewage flows into a black film anaerobic pool 4 for anaerobic degradation, and a large amount of methane generated by anaerobic treatment is reused for cultivation production. The sewage after degradation is pumped to a preaeration tank 5 by a water pump for preaeration, the sewage after aeration is sent to a sedimentation tank 6 by a water pump, mud-water separation is carried out in the sedimentation tank 6, the produced sewage is treated by a multi-stage ecological filter tank 1, sludge is pumped to a drying tank 7 for sun solarization, drying and disinfection, the dried sludge is used for composting to produce organic fertilizer, and the sewage generated by the drying tank 7 flows back to a grid tank 2.
In another technical scheme, in the pig breeding wastewater treatment device using ilmenite sand to strengthen the ecological filter, when the ecological filter 1 is multi-stage, the water outlet of the previous ecological filter 1 is positioned above the water inlet of the next ecological filter 1. The multi-stage ecological filter 1 uses the water level difference to treat sewage step by step.
In another technical scheme, in the pig breeding wastewater treatment device using ilmenite sand to reinforce the ecological filter, each stage of ecological filter 1 further comprises:
the water inlet and distribution pipe groups 101 are uniformly distributed in a river sand layer, and when the ecological filter tanks 1 are in a multi-stage mode, the water outlet of the previous stage of ecological filter tank 1 is communicated with the water inlet of the water inlet distribution pipe group 101 of the next stage of ecological filter tank 1; the multistage plant ecological filter 1 is connected through a pipeline by high-difference.
A plurality of water collecting troughs 102 which are arranged at the bottom of the ecological filter tank 1 side by side, wherein the water collecting troughs 102 are arched, a plurality of water outlet holes are arranged on the water collecting troughs 102 at intervals, and the water collecting troughs 102 are parallel to each other;
a plurality of breathing pipe piles 103 are arranged at intervals, each breathing pipe pile 103 is vertically arranged, the top of each breathing pipe pile 103 is positioned above the ecological filter tank 1, and the bottom of each breathing pipe pile passes through the water collecting groove 102 below the breathing pipe pile and is communicated with the corresponding water collecting groove 102; used for exhausting and sucking air when the ecological filter tank 1 is used for water inlet and water discharge, and solves the problems of air resistance and water seal of the ecological filter tank 1.
And a water drainage groove 104 which is positioned at one side of the ecological filter tank 1 and is communicated with each water collection groove 102, wherein a water outlet of the ecological filter tank 1 is arranged on the water drainage groove 104.
The water inlet and distribution pipe group 101 distributes sewage uniformly and then flows downwards, the breathing pipe pile 103 can ensure that when the water inlet and distribution pipe group 101 adds water and the drainage groove 104 drains water, the phenomena of air resistance and water sealing do not occur, so that water inlet and drainage are smooth, the sewage flows into each water collecting groove 102 after being treated by the ilmenite sand, partial biochar and various biological flora adhesion material combined matrixes, and then is collected into the drainage groove 104, and then is further purified by the next-stage ecological filter 1 after being connected into the water inlet and distribution pipe group 101 of the next-stage ecological filter 1, and the water purified by the last-stage ecological filter 1 is discharged into the water outlet pool 8.
In another technical scheme, in the device for treating the pig breeding wastewater by using ilmenite sand to reinforce an ecological filter, the collecting water tank 102 is in a semi-cylindrical shape.
Example 1
The method comprises the following steps of intercepting sundries such as leaves, twigs, coarse fibers and the like in the excrement by a grid pool, then pumping the sewage to a mechanical micro-filter for deslagging, allowing the separated sewage to flow into a black film anaerobic pool for anaerobic degradation, and recycling a large amount of methane generated by anaerobic treatment for cultivation production. The degraded sewage is pumped to a preaeration tank by a water pump for preaeration, the aerated sewage is sent to a sedimentation tank by a water pump for sludge-water separation in the sedimentation tank, the sludge is pumped to a drying tank for drying, the sewage is treated by a three-stage plant ecological filter tank, and the sewage generated by the drying tank flows back to a grid tank.
The three levels of plant ecological filter tanks are connected through a pipeline by high-difference, the water outlet of the water collecting tank of the previous level of ecological filter tank is communicated with the water inlet of the water inlet distribution water pipe group of the next level of ecological filter tank, and finally treated water flows into the water outlet tank.
The plant ecological filter tank is sequentially provided with a river sand layer, a ilmenite sand mixed calcium carbonate particle layer, an ilmenite sand mixed biological carbon particle layer, a calcium carbonate mixed zeolite particle layer and a calcium carbonate large particle layer from top to bottom. Aquatic plants grow on the ecological filter.
River sand layer: the thickness is 200-350 mm, and the sand is made of river sand;
ilmenite sand mixed calcium carbonate particle layer: the thickness is 300-450 mm, and the calcium carbonate particles and the ilmenite sand are mixed according to the mass ratio of 2: 1 to 4: 1, the particle size of calcium carbonate particles is 6-10 mm;
a mixed layer of ilmenite sand and biochar: the thickness is 300-450 mm, and the biological carbon and the ilmenite sand are mixed according to the mass ratio of 2: 1 to 4: 1, preparing a composition;
calcium carbonate mixed zeolite particle layer: the thickness is 200-350 mm, and the calcium carbonate and zeolite fine particles are mixed according to the mass ratio of 2: 1 to 4: 1, the particle size of calcium carbonate particles is 6-10 mm, and the particle size of zeolite fine particles is 0.5-1.5 mm;
large particle layer of calcium carbonate: the thickness is 200-350 mm, and the calcium carbonate particles comprise calcium carbonate large particles with the particle size of 200-350 mm; 25-55 mm.
The device for treating the live pig breeding wastewater by using the ilmenite sand for strengthening the ecological filter tank is applied to the live pig breeding farm wastewater ecological purification engineering of the grazing livestock breeding company in Wuyi county, Wuxi Leiben, Guangxi, and the operation condition and the operation effect thereof can prove that the new process has the following advantages:
1. wastewater treatment wastewater reaches the first-class discharge standard in national Integrated wastewater discharge Standard (GB 8978-1996).
2. The first-stage aquatic plant ecological filter tank, the second-stage aquatic plant ecological filter tank and the third-stage aquatic plant ecological filter tank of the ecological treatment section absorb and oxidize the treated water quality by utilizing the characteristics of ammonia nitrogen and phosphorus element fertilizers required by plants in the growth period, and effectively solve the problem of removing ammonia nitrogen and phosphorus in the wastewater treatment process of the live pig farm at present. The effect of removing ammonia nitrogen and phosphorus in the wastewater by ecological treatment is obvious.
3. The first-stage aquatic plant ecological filter tank, the second-stage aquatic plant ecological filter tank and the third-stage aquatic plant ecological filter tank are wastewater treatment ecological units, so that the remarkable effect of wastewater treatment is achieved, the income of the aquatic plants (such as leaf vegetables) in different seasons can be obtained, and ecological recycling is achieved.
4. The novel biological ecological reactor of the aquatic plant ecological filter tank designed by utilizing hydraulic plug flow dynamics integrates the traditional anaerobic and aerobic biochemical tanks, sedimentation tanks and constructed wetland unit technologies, saves the investment of wastewater treatment engineering construction and the occupation of land area, and reduces the operation cost.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (10)
1. The live pig breeding wastewater treatment device using ilmenite sand to strengthen the ecological filter tank is characterized by comprising the following components:
when the ecological filter tank is a first stage, an ilmenite sand layer is arranged in the ecological filter tank; when the ecological filter tanks are in multiple stages, an ilmenite sand layer is arranged in at least one stage of ecological filter tank, a water outlet of the previous stage of ecological filter tank is communicated with a water inlet of the next stage of ecological filter tank, and a water inlet and a water outlet of each stage of ecological filter tank are respectively positioned above and below the corresponding ilmenite sand layer.
2. The device for treating the pig breeding wastewater by using the ilmenite sand for the reinforced ecological filter tank as claimed in claim 1, wherein the ilmenite sand layer is composed of a mixed layer of ilmenite sand and calcium carbonate particles and a mixed layer of ilmenite sand and biological carbon, the mixed layer of ilmenite sand and calcium carbonate particles is laid on the mixed layer of ilmenite sand and biological carbon, and the mixed layer of ilmenite sand and calcium carbonate particles is formed by mixing calcium carbonate particles and ilmenite sand in a mass ratio of 2-4: 1, the thickness of the mixture is 300-450 mm, and the mixed layer of the ilmenite sand and the biological carbon is formed by mixing the biological carbon and the ilmenite sand according to the mass ratio of 2-4: 1 and the thickness is 300-450 mm.
3. The device for treating the pig breeding wastewater by using the ilmenite sand for reinforcing the ecological filter tank as claimed in claim 2, wherein a river sand layer, a mixed layer of the ilmenite sand and calcium carbonate particles, a mixed layer of the ilmenite sand and biological carbon, a mixed layer of the calcium carbonate and zeolite particles and a calcium carbonate particle layer are sequentially laid in the ecological filter tank with the ilmenite sand layer from top to bottom, wherein the thickness of the river sand layer is 200-350 mm, and the mixed layer of the calcium carbonate and zeolite particles is formed by mixing the calcium carbonate and the zeolite particles according to a mass ratio of 2-4: 1, and the thickness of the calcium carbonate particle layer is 200-350 mm.
4. The apparatus for treating the waste water from pig breeding using ilmenite sand to reinforce an ecological filter as claimed in claim 3, wherein the particle size of the zeolite particles is 0.5-1.5 mm, the particle sizes of the calcium carbonate particles in the mixed layer of ilmenite sand and calcium carbonate particles and the mixed layer of calcium carbonate and zeolite particles are both 6-10 mm, and the particle size of the calcium carbonate in the calcium carbonate particle layer is 25-55 mm.
5. The apparatus for treating wastewater from pig breeding using ilmenite sand for reinforcing ecological filter tank as claimed in claim 1, further comprising:
a grid tank;
a micro-filter connected with the grid pond;
the black film anaerobic tank is connected with the micro-filter;
the pre-aeration tank is connected with the black film anaerobic tank;
and the sedimentation tank is respectively connected with the pre-aeration tank and the water inlet of the first-stage ecological filter tank.
6. The apparatus for treating pig breeding wastewater using ilmenite sand as defined in claim 1, wherein when the ecological filter is multi-stage, an ilmenite sand layer is provided in each stage of the ecological filter.
7. The apparatus for treating wastewater from pig breeding using ilmenite sand for reinforcing ecological filter tank as claimed in claim 5, further comprising:
the drying tank is respectively connected with the sedimentation tank and the grid tank;
and the water outlet tank is connected with a water outlet of the last stage of ecological filter tank.
8. The apparatus for treating wastewater from pig breeding using ilmenite sand as defined in claim 1, wherein when the ecological filters are multi-stage, the water outlet of the previous stage is located above the water inlet of the next stage.
9. The apparatus for treating the waste water from pig breeding by using ilmenite sand in the ecological filter tanks as claimed in claim 3, wherein each stage of the ecological filter tanks further comprises:
the water inlet and distribution pipe group is arranged in the river sand layer, and when the ecological filter tanks are in a multi-stage mode, the water outlet of the previous stage of ecological filter tank is communicated with the water inlet of the water inlet distribution pipe group of the next stage of ecological filter tank;
the water collecting troughs are arranged at the bottom of the ecological filter tank side by side and are arched, a plurality of water outlet holes are formed in the water collecting troughs at intervals, and the water collecting troughs are parallel to each other;
a plurality of breathing pipe piles are arranged at intervals, each breathing pipe pile is vertically arranged, the top of each breathing pipe pile is positioned above the ecological filter tank, and the bottom of each breathing pipe pile penetrates through a water collecting tank below the breathing pipe pile and is communicated with a corresponding water collecting tank;
and the water drainage tank is positioned on one side of the ecological filter tank and communicated with each water collection tank, and a water outlet of the ecological filter tank is arranged on the water drainage tank.
10. The apparatus for treating wastewater from pig breeding using ilmenite sand as defined in claim 9, wherein said collection sump has a semi-cylindrical shape.
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