CN212687798U - Integrated treatment device for aquaculture wastewater and biogas slurry - Google Patents
Integrated treatment device for aquaculture wastewater and biogas slurry Download PDFInfo
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- CN212687798U CN212687798U CN202021012427.0U CN202021012427U CN212687798U CN 212687798 U CN212687798 U CN 212687798U CN 202021012427 U CN202021012427 U CN 202021012427U CN 212687798 U CN212687798 U CN 212687798U
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Abstract
The utility model discloses an integrated treatment device for aquaculture wastewater and biogas slurry, which is of a circular ring structure, wherein the inner ring of the circular ring structure is a coagulating sedimentation chamber, the outer ring comprises an electrodialysis chamber and an MAP reaction chamber, and the electrodialysis chamber is an area formed between a cathode plate and an anode plate; the MAP reaction chamber is an area formed between two insulating plates; one of the two insulation boards is arranged on the surface of the cathode plate deviating from the direction of the electrodialysis chamber, and the other insulation board is arranged on the surface of the anode plate deviating from the direction of the electrodialysis chamber. The utility model discloses an integration processing apparatus takes up an area of for a short time, easy operation, maintenance management are convenient, the working costs is low, can realize getting rid of COD, SS, ammonia nitrogen, total phosphorus, heavy metal etc. in the waste water in step, can realize the utilization of the resourceful of nitrogen phosphorus in the waste water moreover, generate the struvite sediment, changing waste into valuables produces economic benefits, practices thrift the working costs.
Description
Technical Field
The utility model relates to an integrated processing apparatus of aquaculture wastewater natural pond liquid belongs to aquaculture wastewater treatment and equips technical field.
Background
In recent years, with the improvement of the living standard of residents, the consumption demand of people on livestock products is continuously increased, so that the continuous development of animal husbandry is promoted, and the livestock husbandry is developed towards scale and intensification. However, with the expansion of production scale, the pollution problem of livestock and poultry breeding industry is increasingly prominent, livestock and poultry breeding wastewater becomes the first source of agricultural non-point source pollution in China and is also an important source of environmental pollution in China, if the livestock and poultry breeding wastewater is not properly treated, serious environmental pollution is caused, water bodies become black and smelly or eutrophication, even the safety of underground water environment is threatened, and certain harm is caused to the atmosphere and soil. Therefore, the effective treatment of the livestock and poultry breeding wastewater is urgent.
A large amount of wastewater and biogas slurry discharged at high concentration are an important pollution source for environmental pollution, and need to be solved urgently. The prior art for solving the pollution of waste water and biogas slurry is one of biogas treatment projects. The method forms biogas slurry from excrement and sewage of livestock and poultry breeding through anaerobic fermentation, and simultaneously generates biogas, thereby realizing partial resource utilization, successfully solving some problems in the treatment of wastewater and biogas slurry, and still having the following problems: the biogas slurry contains more nutrient elements, vitamins and growth hormone for promoting biological growth and the like, and can be used as a biological fertilizer for irrigating farmlands and feeding fishes with fish feed to generate economic benefit and reduce cost. However, pollutants such as COD, ammonia nitrogen, total phosphorus and the like in the biogas slurry are still high and cannot reach the standard of the discharge of culture pollutants, soil hardening and underground water pollution can be caused if the pollutants are directly discharged, sufficient farmlands are needed for irrigating farmlands by the biogas slurry to consume the biogas slurry, more than one time of land rotation is needed, the occupied land area is large, and land shortage is caused. And for some large-scale intensive culture, because the surrounding land is limited, the amount of biogas slurry generated every year is far greater than the environmental bearing capacity, and the water body eutrophication can be caused when the biogas slurry is discharged into the environment.
In the prior art, a biological comprehensive method and a resource utilization method are adopted, for example, CN102267787A is used for strengthening treatment of biogas slurry by using a microbial preparation, a microbial adsorbent and fish, but the microbial preparation needs to be added according to the biogas slurry amount every day, so that the cost is high, the bacterium adding time needs to be controlled, and the large-scale popularization is difficult. CN108947098A adopts MAP method to treat pig farm breeding wastewater, and converts the wastewater into fertilizer magnesium ammonium phosphate with commercial value, but MAP is carried out before anaerobic biogas production, and the suspended matter concentration in the wastewater is higher, so reverse osmosis filter membrane is easy to block, and the operation cost is high.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model aims at providing an integrated processing apparatus of breed waste water natural pond liquid that occupation of land is little, easy operation, maintenance management is convenient, the working costs is low can realize getting rid of COD, SS, ammonia nitrogen, total phosphorus, heavy metal etc. in the waste water in step, can realize the utilization of nitrogen phosphorus in the waste water resource moreover, generates the struvite sediment, and changing waste into valuables produces economic benefits, practices thrift the working costs.
In order to realize the technical purpose, the utility model adopts the following technical scheme:
an integrated treatment device for aquaculture wastewater and biogas slurry is of an annular structure, an inner ring of the annular structure is a coagulating sedimentation chamber, an outer ring of the annular structure comprises an electrodialysis chamber and an MAP reaction chamber, and the electrodialysis chamber is an area formed between a cathode plate and an anode plate; the MAP reaction chamber is an area formed between two insulating plates; one of the two insulation boards is arranged on the surface of the cathode plate deviating from the direction of the electrodialysis chamber, and the other insulation board is arranged on the surface of the anode plate deviating from the direction of the electrodialysis chamber.
Furthermore, the coagulating sedimentation chamber is of a top opening structure and is connected to the electrodialysis chamber through a water pipe, the upper part of the coagulating sedimentation chamber is cylindrical, the lower part of the coagulating sedimentation chamber is conical, and a sludge discharge port is formed in the bottom of the conical shape.
Furthermore, a grid is installed at the top of the coagulating sedimentation chamber, a baffle plate is arranged in a cylindrical area of the coagulating sedimentation chamber, and a No. 1 stirring device is installed on the inner wall of the cylinder.
Furthermore, in the electrodialysis chamber, an anode plate is taken as a boundary starting point, a cathode plate is taken as a boundary end point, a trivalent anion exchange membrane, an anion exchange membrane, a cation exchange membrane and a monovalent cation exchange membrane are sequentially arranged in the circumferential direction, and the anode plate and the cathode plate are connected through an external power supply.
Furthermore, the external power supply is a direct current power supply, the cathode plate is a graphite plate or a carbon plate, and the anode plate is a titanium plate or a stainless steel plate.
Further, the region between the trivalent anion exchange membrane and the anode plate and the region between the monovalent cation exchange membrane and the cathode plate in the electrodialysis chamber are respectively connected to the MAP reaction chamber through a 2# water pipe and a 3# water pipe.
Furthermore, a 2# stirring device is installed in the MAP reaction chamber, a water outlet pipe is arranged at the upper part of the MAP reaction chamber, a crystal discharge pipe is arranged at the lower part of the MAP reaction chamber, and a multifunctional analyzer is installed on the water outlet pipe and used for detecting the concentration of ammonia nitrogen and TP in the water on line.
Furthermore, a clamping groove is formed in the wall surface of the circular ring-shaped structure, and the negative plate, the positive plate and the insulating plate are detachably fixed in the clamping groove in a slot mode, so that the negative plate, the positive plate and the insulating plate are convenient to clean and replace.
The utility model has the advantages that:
(1) the utility model discloses collect coagulating sedimentation, electrodialysis and MAP technology in an organic whole, form the integrated device that natural pond liquid was handled, not only can realize getting rid of pollutants such as COD, SS, ammonia nitrogen, total phosphorus, heavy metal in the waste water in step, can realize the utilization of resources of nitrogen phosphorus in the waste water moreover, generate the struvite sediment, changing waste into valuables produces economic benefits, practices thrift the cost.
(2) The utility model firstly utilizes the coagulating sedimentation to remove large granular suspended matters and colloidal substances in the biogas slurry, thereby being convenient for improving the current efficiency in the subsequent electrodialysis reaction and generating struvite with higher purity in MAP sedimentation; in the electrodialysis process, ions in the solution are separated and enriched by using an external direct current electric field and an ion selective permeable membrane, and then ammonium ions and phosphate ions are enriched by using specific positive monovalent and negative trivalent ion selective permeable membranes for subsequent MAP precipitation to generate high-purity struvite.
(3) The utility model discloses an integrated device takes up an area of for a short time, easy operation, maintenance management convenience, working costs are low, can realize innoxious, minimizing and resourceful treatment of natural pond liquid.
Drawings
FIG. 1 is a top view of the integrated treatment device for aquaculture wastewater and biogas slurry of the present invention.
FIG. 2 is a front view of the inner ring coagulating sedimentation chamber of the integrated treatment device for aquaculture wastewater and biogas slurry.
Fig. 3 is a front view of the development state of the electrodialysis chamber and the MAP reaction chamber of the outer ring of the integrated treatment device for aquaculture wastewater and biogas slurry.
Wherein: 1. a coagulating sedimentation chamber, 2, an electrodialysis chamber, 3, an MAP reaction chamber, 4, a cathode plate, 5, an anode plate, 6, an insulation plate, 7, a water passing pipe, 8, a sludge discharge port, 9, a grid, 10, a baffle plate, 11, a No. 1 stirring device, 12, a trivalent anion exchange membrane, 13, an anion exchange membrane, 14, a cation exchange membrane, 15, a monovalent cation exchange membrane, 16, an external power source, 17, a No. 2 water passing pipe, 18, a No. 3 water passing pipe, 19, a No. 2 stirring device, 20 and a water outlet pipe; 21. crystal discharge pipe, 22, multifunctional analyzer.
Detailed Description
The present invention is further described by way of the following examples, it being understood that the examples described are only a few examples of the present invention, and are not intended to limit the scope of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, for the utility model discloses a preferred integrated processing apparatus's of breed waste water natural pond liquid top view, integrated processing apparatus wholly is the ring loop shape structure:
the inner ring of the circular ring structure is a coagulating sedimentation chamber 1; the coagulating sedimentation chamber 1 is of a top opening structure, is connected to the electrodialysis chamber 2 through a No. 1 water pipe 7, has a cylindrical upper part and a conical lower part, and is provided with a sludge discharge port 8 at the conical bottom; the top of the coagulating sedimentation chamber 1 is also provided with a grid 9, a baffle plate 10 is arranged in the cylindrical area, and the cylindrical inner wall is provided with a No. 1 stirring device 11.
The outer ring of the circular ring structure comprises an electrodialysis chamber 2 and a MAP reaction chamber 3, wherein the electrodialysis chamber 2 is an area formed between a cathode plate 4 and an anode plate 5; in the electrodialysis chamber 2, an anode plate 5 is taken as a boundary starting point, a cathode plate 4 is taken as a boundary end point, a trivalent anion exchange membrane 12, an anion exchange membrane 13, a cation exchange membrane 14 and a monovalent cation exchange membrane 15 are sequentially arranged in the circumferential direction, the anode plate 5 and the cathode plate 4 are connected through an external power supply 16, the external power supply 16 is a direct-current power supply, the cathode plate 4 is a graphite plate or a carbon plate, and the anode plate 5 is a titanium plate or a stainless steel plate; the region between the trivalent anion exchange membrane 12 and the anode plate 5 and the region between the monovalent cation exchange membrane 15 and the cathode plate 4 in the electrodialysis chamber 2 are connected to the MAP reaction chamber 3 through a 2# water passing pipe 17 and a 3# water passing pipe 18, respectively.
The MAP reaction chamber 3 is a region formed between two insulating plates 6; one of the two insulating plates 6 is arranged on the surface of the cathode plate 4 which is deviated from the direction of the electrodialysis chamber 2, and the other insulating plate is arranged on the surface of the anode plate 5 which is deviated from the direction of the electrodialysis chamber 2.
A2 # stirring device 19 is arranged in the MAP reaction chamber 3, a water outlet pipe 20 is arranged at the upper part, a crystal discharge pipe 21 is arranged at the lower part, and a multifunctional analyzer 22 is arranged on the water outlet pipe 20 and is used for detecting the concentration of ammonia nitrogen and TP in outlet water on line.
A plurality of clamping grooves are further formed in the wall surface of the circular ring-shaped structure, and the negative plate 4, the positive plate 5 and the insulating plate 6 are detachably fixed in the clamping grooves in a slot mode so as to be convenient to clean and replace.
The utility model discloses an integration processing apparatus's concrete processing procedure does:
(1) coagulating sedimentation: the culture wastewater biogas slurry enters a coagulative precipitation chamber after large particles in the culture wastewater biogas slurry are intercepted by a grid, then a coagulant and a coagulant aid are added, coagulative precipitation is carried out under the action of a stirring device, precipitates are settled under the action of gravity and a baffle plate, are accumulated at the conical bottom and are subjected to anaerobic fermentation decomposition at the same time, a sludge discharge port is formed in the conical bottom, the precipitates are periodically discharged, and the effluent of the coagulative precipitation chamber enters an electrodialysis chamber through a water pipe;
(2) electrodialysis: the effluent of the coagulating sedimentation chamber enters an electrodialysis chamber, phosphate ions in the wastewater sequentially pass through an anion selective permeable membrane and a trivalent anion selective permeable membrane to be enriched on a positive plate under the action of an external electric field, ammonium ions in the wastewater sequentially pass through a cation selective permeable membrane and a monovalent cation selective permeable membrane to be enriched on a negative plate, an anion enrichment region and a cation enrichment region are respectively formed, and the wastewater rich in phosphate ions and the wastewater rich in ammonium ions respectively enter an MAP reaction chamber through respective water passing pipes;
(3) MAP precipitation: the method comprises the steps of enabling wastewater rich in phosphate radical ions and wastewater rich in ammonium radical ions to enter an MAP reaction chamber through respective water pipes to be mixed, then adjusting the pH value of the wastewater to be 9, detecting the concentration of ammonia nitrogen and TP on line according to a multifunctional analyzer of an overflow water outlet pipe, adjusting the adding amount of a magnesium source and a phosphorus source, enabling the wastewater to react with the ammonium radical ions and the phosphate radical ions in the wastewater under the action of a stirring device to generate struvite sediment, discharging the struvite sediment through a crystal discharge pipe at the lower part periodically, and enabling outlet water after reaction to enter a subsequent process through the overflow water outlet pipe at the upper part.
Claims (8)
1. The utility model provides an integrated processing apparatus of breed waste water natural pond liquid which characterized in that: the integral treatment device is of a circular ring structure, the inner ring of the circular ring structure is a coagulating sedimentation chamber (1), the outer ring of the circular ring structure comprises an electrodialysis chamber (2) and an MAP reaction chamber (3), and the electrodialysis chamber (2) is an area formed between a cathode plate (4) and an anode plate (5); the MAP reaction chamber (3) is an area formed between two insulating plates (6); one of the two insulation plates (6) is arranged on the surface of the cathode plate (4) deviating from the direction of the electrodialysis chamber (2), and the other insulation plate is arranged on the surface of the anode plate (5) deviating from the direction of the electrodialysis chamber (2).
2. The integrated treatment device for aquaculture wastewater and biogas slurry as claimed in claim 1, which is characterized in that: the coagulating sedimentation chamber (1) is of a top opening structure, is connected to the electrodialysis chamber (2) through a No. 1 water pipe (7), and is cylindrical at the upper part and conical at the lower part, and a sludge discharge port (8) is arranged at the bottom of the conical shape.
3. The integrated treatment device for aquaculture wastewater and biogas slurry as claimed in claim 1, which is characterized in that: a grid (9) is installed at the top of the coagulating sedimentation chamber (1), a baffle plate (10) is arranged in a cylindrical area of the coagulating sedimentation chamber (1), and a No. 1 stirring device (11) is installed on the inner wall of the cylinder.
4. The integrated treatment device for aquaculture wastewater and biogas slurry as claimed in claim 1, which is characterized in that: in the electrodialysis chamber (2), an anode plate (5) is used as a boundary starting point, a cathode plate (4) is used as a boundary end point, a trivalent anion exchange membrane (12), an anion exchange membrane (13), a cation exchange membrane (14) and a monovalent cation exchange membrane (15) are sequentially arranged in the circumferential direction, and the anode plate (5) and the cathode plate (4) are connected through an external power supply (16).
5. The integrated treatment device for aquaculture wastewater and biogas slurry as claimed in claim 4, which is characterized in that: the external power supply (16) is a direct current power supply, the cathode plate is a graphite plate or a carbon plate, and the anode plate is a titanium plate or a stainless steel plate.
6. The integrated treatment device for aquaculture wastewater and biogas slurry as claimed in claim 1, which is characterized in that: the area between the trivalent anion exchange membrane (12) and the anode plate (5) and the area between the monovalent cation exchange membrane (15) and the cathode plate (4) in the electrodialysis chamber (2) are respectively connected to the MAP reaction chamber (3) through a 2# water passing pipe (17) and a 3# water passing pipe (18).
7. The integrated treatment device for aquaculture wastewater and biogas slurry as claimed in claim 1, which is characterized in that: install 2# agitating unit (19) in MAP reacting chamber (3), upper portion is equipped with outlet pipe (20), and the lower part is equipped with crystal discharge pipe (21), install multi-functional analysis appearance (22) on outlet pipe (20) for the ammonia nitrogen and the TP concentration of on-line measuring outlet water.
8. The integrated treatment device for aquaculture wastewater and biogas slurry as claimed in claim 1, which is characterized in that: the clamping groove is formed in the wall surface of the circular ring-shaped structure, and the negative plate (4), the positive plate (5) and the insulating plate (6) are detachably fixed in the clamping groove in a slot mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021012427.0U CN212687798U (en) | 2020-06-05 | 2020-06-05 | Integrated treatment device for aquaculture wastewater and biogas slurry |
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| CN202021012427.0U CN212687798U (en) | 2020-06-05 | 2020-06-05 | Integrated treatment device for aquaculture wastewater and biogas slurry |
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| CN212687798U true CN212687798U (en) | 2021-03-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200634A (en) * | 2021-05-28 | 2021-08-03 | 中南林业科技大学 | Biogas slurry coprecipitation-electrodialysis purification process |
| CN113651470A (en) * | 2021-08-11 | 2021-11-16 | 北京航天威科环保科技有限公司 | Novel biomass waste disposal and resource utilization system and method |
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2020
- 2020-06-05 CN CN202021012427.0U patent/CN212687798U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200634A (en) * | 2021-05-28 | 2021-08-03 | 中南林业科技大学 | Biogas slurry coprecipitation-electrodialysis purification process |
| CN113200634B (en) * | 2021-05-28 | 2022-04-19 | 中南林业科技大学 | Biogas slurry coprecipitation-electrodialysis purification process |
| CN113651470A (en) * | 2021-08-11 | 2021-11-16 | 北京航天威科环保科技有限公司 | Novel biomass waste disposal and resource utilization system and method |
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