CN209890451U - Nitrification and denitrification circulating water treatment system - Google Patents
Nitrification and denitrification circulating water treatment system Download PDFInfo
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- CN209890451U CN209890451U CN201920388890.6U CN201920388890U CN209890451U CN 209890451 U CN209890451 U CN 209890451U CN 201920388890 U CN201920388890 U CN 201920388890U CN 209890451 U CN209890451 U CN 209890451U
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Abstract
The utility model discloses a nitrification and denitrification circulating water treatment system, wherein the treated water flow sequentially flows through a denitrification cavity, a nitrification cavity, a sedimentation cavity, an adjusting cavity, a sand filtering device and a sterilizing device; the denitrification chamber is regulated to an anoxic environment and the nitrification chamber is regulated to an aerobic environment. Has the advantages that: the denitrification cavity is filled with biomass filler capable of slowly releasing organic carbon sources, the culture water also contains endogenous carbon sources such as residual feed and excrement, and the carbon sources can improve denitrification efficiency in an anoxic environment, so that nitrate nitrogen in the culture water is reduced, and the organisms in the culture water are favorably prevented from being poisoned by the nitrate nitrogen. The aerobic environment is adjusted in the nitrification cavity, which is beneficial to carrying out nitrification reaction and improving the quality of the culture water. The alkaline adjusting unit is matched with the acidic adjusting unit, so that the acidity and alkalinity of the water flow can be improved. The technical scheme can improve the clarity of water quality and kill pathogenic microorganisms, thereby realizing the cyclic utilization of the aquaculture water. The utility model relates to a water treatment equipment.
Description
Technical Field
The utility model relates to a water treatment facilities, in particular to nitration denitrification circulating water processing system.
Background
With the development of aquaculture from a traditional extensive type running water aquaculture mode to a high-density intensive aquaculture mode, the scale and the yield of aquaculture are gradually increased, and the problems of non-point source pollution, increase of aquaculture diseases and the like are gradually severe.
According to the traditional recirculating aquaculture water treatment system, after particles such as residual bait, excrement and the like are removed by physical methods such as mechanical filtration, air flotation and the like, soluble inorganic nitrogen such as ammonia nitrogen, nitrite nitrogen and the like with high biological toxicity is converted into nitrate nitrogen with low biological toxicity by utilizing the metabolism of microorganisms. The technical defects of the traditional recirculating aquaculture water treatment system are as follows: the lack of carbon source, the low denitrification efficiency of the system, the continuous accumulation of nitrate nitrogen in the system, and the high concentration of nitrate nitrogen may produce toxic action on the cultured organisms.
The water treatment system for strengthening denitrification by adopting the periodically added carbon source has the technical defects that: the carbon source demand is large, which causes the water treatment cost to be greatly increased. In order to ensure the economic benefit of cultivation, the problem of nitrate nitrogen accumulation is always solved by changing water, and the recycling of the cultivation water is difficult to realize in the true sense.
In the aquaculture process, the fed feed is usually discharged into aquaculture water in the form of excrement and other metabolites, and the solid waste has good biodegradability, can be decomposed and utilized by microorganisms and serves as an endogenous carbon source for denitrification.
Chemical Oxygen Demand (COD) is the amount of reducing substances to be oxidized in a water sample measured by a Chemical method, and in wastewater, effluent from a wastewater treatment plant and polluted water, the Oxygen equivalent of substances capable of being oxidized by a strong oxidizing agent.
Dissolved Oxygen (DO) refers to the amount of Oxygen Dissolved in water, expressed in milligrams of Oxygen per liter of water.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a nitrification and denitrification circulating water treatment system is provided, the technical problem of nitrate nitrogen accumulation is solved in accessible denitrification, nitration, combines acid-base regulation, sand filtration and disinfection process to realize breeding water cyclic utilization.
The technical scheme adopted for solving the technical problems is as follows:
the nitrification and denitrification circulating water treatment system comprises a nested reaction and precipitation integrated water treatment device and a regulating device; the nested reaction and precipitation integrated water treatment device comprises a denitrification cavity, a nitrification cavity and a precipitation cavity, and the adjusting device comprises an adjusting cavity and a plurality of buffer solution storage units; the treated water flow sequentially flows through the denitrification cavity, the nitrification cavity, the sedimentation cavity and the regulation cavity; the denitrification cavity is adjusted to be in an anoxic environment, and the nitrification cavity is adjusted to be in an aerobic environment; the buffer storage unit comprises at least one alkaline adjusting unit and at least one acidic adjusting unit, the alkaline adjusting unit can inject alkaline buffer into the adjusting cavity, and the acidic adjusting unit can inject acidic buffer into the adjusting cavity.
As an improvement, the denitrification cavity is arranged in the sedimentation cavity, the nitrification cavity is arranged in the denitrification cavity, the denitrification cavity is cylindrical, the nitrification cavity is tubular, the upper end of the nitrification cavity is communicated with the denitrification cavity, and the nitrification cavity penetrates through the bottom of the denitrification cavity and is communicated with the sedimentation cavity.
As the improvement, the lower extreme in denitrification chamber is equipped with the baffle, and the top of baffle is protruding to denitrification chamber's inside, is equipped with between the top surface of baffle and the denitrification chamber and overflows the clearance.
As the improvement, the bottom of the sedimentation cavity is provided with a sludge discharge pipe which is communicated with the bottom of the sedimentation cavity, the bottom of the sedimentation cavity is conical, and the sludge discharge pipe is provided with an electromagnetic valve which can control the on-off state and the water flow of the sludge discharge pipe.
As an improvement, each buffer storage unit is respectively provided with a metering pump, and the metering pumps can control the flow of liquid flowing through the buffer storage units.
As an improvement, the nitrification and denitrification circulating water treatment system also comprises an ultraviolet disinfection device, and the treated water flows through the ultraviolet disinfection device after flowing through the adjusting device.
As an improvement, the nitrification and denitrification circulating water treatment system also comprises a sand filtering device, the sand filtering device is arranged between the adjusting device and the ultraviolet disinfection device, the sand filtering device comprises a sand bed, a gravel intercepting device and a plurality of water filtering caps, the water filtering caps are arranged at the lower part of the sand bed, the gravel intercepting device is arranged at the upper part of the sand bed, and the treated water flow sequentially flows through the water filtering caps, the sand bed and the gravel intercepting device.
As an improvement, the sand filtering device is provided with an access hole which is arranged on one side of the sand bed.
As an improvement, a first flow regulating valve is arranged between the regulating device and the sand filtering device, a second flow regulating valve and a third flow regulating valve are further arranged on the sand filtering device, the first flow regulating valve can control the on-off state and the water flow between the regulating device and the sand filtering device, the second flow regulating valve and the third flow regulating valve are respectively communicated with the bottom of the sand filtering device, the second flow regulating valve can exhaust the water flow in the sand filtering device, and the third flow regulating valve can inject the water flow for washing the sand bed into the sand filtering device and regulate the water flow.
As an improvement, the nitrification and denitrification circulating water treatment system also comprises a fan and a plurality of air distribution pipes, wherein each air distribution pipe comprises a first air distribution pipe, a second air distribution pipe and a third air distribution pipe, the first air distribution pipe is communicated with the nitrification cavity, the second air distribution pipe is communicated with the regulation cavity, and the third air distribution pipe is communicated with the sand filter device.
Has the advantages that: the denitrification cavity is adjusted to be in an anoxic environment, the denitrification cavity is filled with biomass filler capable of slowly releasing organic carbon sources, the treated culture water also contains endogenous carbon sources such as residual bait, excrement and the like, and the carbon sources can improve the denitrification efficiency in the anoxic environment, so that the nitrate nitrogen in the culture water is reduced, and the organisms in the culture water are favorably prevented from being poisoned by the nitrate nitrogen. The aerobic environment is adjusted in the nitrification cavity, which is beneficial to carrying out nitrification reaction and improving the quality of the culture water. The alkaline adjusting unit and the acidic adjusting unit are matched, so that the acidity and alkalinity of the treated water flow can be improved. The technical scheme can improve the clarity of water quality and kill pathogenic microorganisms, thereby realizing the cyclic utilization of the aquaculture water.
Drawings
The invention will be further explained with reference to the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a nested reaction and precipitation integrated water treatment device according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a nested reaction and precipitation integrated water treatment device according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a nested reaction and precipitation integrated water treatment device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an adjusting device according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a sand filtration device according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 6, the nitrification and denitrification circulating water treatment system comprises a nested reaction and sedimentation integrated water treatment device and a regulating device; the nested reaction and precipitation integrated water treatment device comprises a denitrification cavity 1, a nitrification cavity 2 and a precipitation cavity 3, and the adjusting device comprises an adjusting cavity 4 and a plurality of buffer solution storage units; the treated water flows through the denitrification cavity 1, the nitrification cavity 2, the sedimentation cavity 3 and the adjusting cavity 4 in sequence; the denitrification cavity 1 is adjusted to be in an anoxic environment, and the nitrification cavity 2 is adjusted to be in an aerobic environment; the buffer storage unit comprises at least one alkaline adjusting unit 5 and at least one acidic adjusting unit 6, wherein the alkaline adjusting unit 5 can inject alkaline buffer into the adjusting cavity 4, and the acidic adjusting unit 6 can inject acidic buffer into the adjusting cavity 4.
The denitrification cavity 1 is adjusted to be in an anoxic environment, the denitrification cavity 1 is filled with biomass filler capable of slowly releasing organic carbon sources, the treated culture water also contains endogenous carbon sources such as residual bait, excrement and the like, and the carbon sources can improve the denitrification efficiency in the anoxic environment, so that the nitrate nitrogen in the culture water is reduced, and the organisms in the culture water are favorably prevented from being poisoned by the nitrate nitrogen. The aerobic environment is adjusted in the nitrification cavity 2, which is beneficial to carrying out nitrification reaction and improving the quality of the culture water. The alkaline adjusting unit 5 and the acidity adjusting unit 6 are matched, so that the acidity and alkalinity of the treated water flow can be improved. The technical scheme can improve the clarity of water quality and kill pathogenic microorganisms, thereby realizing the cyclic utilization of the aquaculture water.
Preferably, the denitrification cavity 1 is arranged in the sedimentation cavity 3, the nitrification cavity 2 is arranged in the denitrification cavity 1, the denitrification cavity 1 is cylindrical, the nitrification cavity 2 is tubular, the upper end of the nitrification cavity 2 is communicated with the denitrification cavity 1, and the nitrification cavity 2 penetrates through the bottom of the denitrification cavity 1 and is communicated with the sedimentation cavity 3.
The nested form of the sedimentation chamber 3, the denitrification chamber 1 and the nitrification chamber 2 is beneficial to simplifying the structure of the nested reaction and sedimentation integrated water treatment device, and the space utilization rate can be improved. The denitrification chamber 1 of this embodiment is equipped with three baffle in, and the water hole is crossed on the top of baffle formation, and rivers accessible crosses the water hole and flows in the opposite side of baffle from one side of baffle, crosses the water hole height staggered arrangement, and three baffle makes rivers can turn the flow back in proper order and pass through each region of denitrification chamber 1, can avoid the short-term current, is favorable to providing messenger's rivers fully to react in denitrification chamber 1.
Preferably, the lower end of the denitrification cavity 1 is provided with a baffle 7, the top of the baffle 7 protrudes towards the inside of the denitrification cavity 1, and an overflowing gap is arranged between the top surface of the baffle 7 and the denitrification cavity 1.
The top surface of the baffle 7 of this embodiment is tapered with a taper angle of 45 ° to 65 °. The top of the baffle 7 protrudes towards the inside of the denitrification cavity 1, so that water flow passing through the denitrification cavity 1 can flow around the baffle 7, and solid-liquid separation of the water flow in the sedimentation cavity 3 is facilitated.
Preferably, the bottom of the sedimentation chamber 3 is provided with a sludge discharge pipe 8, the sludge discharge pipe 8 is communicated with the bottom of the sedimentation chamber 3, the bottom of the sedimentation chamber 3 is conical, and the sludge discharge pipe 8 is provided with an electromagnetic valve 9 capable of controlling the on-off state and the water flow of the sludge discharge pipe 8.
The conical bottom of the settling chamber 3 facilitates the collection of solid sediment. The sludge discharge pipe 8 can discharge the sediment at the bottom of the sedimentation cavity 3. The electromagnetic valve 9 can control the sludge discharge pipe 8 to discharge solid sediments periodically.
Preferably, each buffer storage unit is provided with a metering pump 10, and the metering pumps 10 can control the flow rate of the liquid flowing through the buffer storage units.
The metering pump 10 can accurately control the dosage of the acid-base buffer solution, and is beneficial to improving the acid-base regulation precision of the regulation device.
Preferably, the nitrification and denitrification circulating water treatment system further comprises an ultraviolet disinfection device 11, and the treated water flows through the ultraviolet disinfection device 11 after flowing through the adjusting device.
The ultraviolet disinfection device 11 can further kill the microorganisms in the treated water flow, and is beneficial to improving the water quality.
Preferably, the nitrification and denitrification circulating water treatment system further comprises a sand filtering device, the sand filtering device is arranged between the adjusting device and the ultraviolet disinfection device 11, the sand filtering device comprises a sand bed 12, a gravel intercepting device 13 and a plurality of water filtering caps 14, the water filtering caps 14 are arranged at the lower part of the sand bed 12, the gravel intercepting device 13 is arranged at the upper part of the sand bed 12, and the treated water flow sequentially flows through the water filtering caps 14, the sand bed 12 and the gravel intercepting device 13.
The water filtering cap 14, the sand bed 12 and the gravel intercepting device 13 form a sand filtering structure from bottom to top, which is beneficial to reducing the turbidity degree of the treated water flow and ensuring that the water quality is clear.
Preferably, the sand filter device is provided with an access hole 15, and the access hole 15 is arranged at one side of the sand bed 12.
The access opening 15 is beneficial to removing the faults of the sand filtering device, so that the sand filtering device is kept in a good working state.
Preferably, a first flow regulating valve 16 is arranged between the regulating device and the sand filtering device, a second flow regulating valve 17 and a third flow regulating valve 18 are further arranged on the sand filtering device, the first flow regulating valve 16 can control the on-off state and the water flow between the regulating device and the sand filtering device, the second flow regulating valve 17 and the third flow regulating valve 18 are respectively communicated with the bottom of the sand filtering device, the second flow regulating valve 17 can exhaust the water flow in the sand filtering device, and the third flow regulating valve 18 can inject the water flow for washing the sand bed 12 into the sand filtering device and regulate the water flow.
The third flow control valve 18 may be used to clean the sand filtration apparatus by injecting a flow of water into the sand filtration apparatus that flushes the sand bed 12 and adjusting the flow of water. The second flow regulating valve 17 can clean the sand filtration device by evacuating the water flow and sediment in the sand filtration device.
Preferably, the nitrification and denitrification circulating water treatment system further comprises a fan 19 and a plurality of air distribution pipes, each air distribution pipe comprises a first air distribution pipe 20, a second air distribution pipe 21 and a third air distribution pipe 22, the first air distribution pipe 20 is communicated with the nitrification cavity 2, the second air distribution pipe 21 is communicated with the regulation cavity 4, and the third air distribution pipe 22 is communicated with the sand bed 12.
The first air distribution pipe 20 is arranged at the lower part of the nitrification cavity 2 and can provide air flow for the nitrification cavity 2, which is beneficial to creating an aerobic environment for the nitrification cavity 2. The second gas distribution pipe 21 is arranged at the lower part of the adjusting cavity 4 and can provide gas flow for the adjusting cavity 4, which is beneficial to improving the efficiency of acid-base adjustment. The third air distribution pipe 22 is arranged at the lower part of the sand bed 12, which is beneficial to increasing the washing and cleaning intensity of the sand bed 12 through the combined action of steam and water in the washing process.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. Nitrification and denitrification circulating water treatment system, its characterized in that: comprises a nested reaction and precipitation integrated water treatment device and a regulating device; the nested reaction and precipitation integrated water treatment device comprises a denitrification cavity, a nitrification cavity and a precipitation cavity, and the adjusting device comprises an adjusting cavity and a plurality of buffer solution storage units; the treated water flow sequentially flows through the denitrification cavity, the nitrification cavity, the sedimentation cavity and the regulation cavity; the denitrification cavity is adjusted to be in an anoxic environment, and the nitrification cavity is adjusted to be in an aerobic environment; the buffer storage unit comprises at least one alkaline adjusting unit and at least one acidic adjusting unit, the alkaline adjusting unit can inject alkaline buffer into the adjusting cavity, and the acidic adjusting unit can inject acidic buffer into the adjusting cavity.
2. The nitrification-denitrification circulating water treatment system according to claim 1, wherein: the denitrification chamber is arranged in the sedimentation chamber, the nitrification chamber is arranged in the denitrification chamber, the denitrification chamber is cylindrical, the nitrification chamber is tubular, the upper end of the nitrification chamber is communicated with the denitrification chamber, and the nitrification chamber runs through the bottom of the denitrification chamber and is communicated with the sedimentation chamber.
3. The nitrification-denitrification circulating water treatment system according to claim 2, wherein: the lower extreme in denitrification chamber is equipped with the baffle, the top of baffle to the inside arch in denitrification chamber, the top surface of baffle with be equipped with between the denitrification chamber and overflow the clearance.
4. The nitrification-denitrification circulating water treatment system according to claim 3, wherein: the bottom of the sedimentation chamber is provided with a sludge discharge pipe, the sludge discharge pipe is communicated with the bottom of the sedimentation chamber, the bottom of the sedimentation chamber is conical, and the sludge discharge pipe is provided with an electromagnetic valve capable of controlling the on-off state and the water flow of the sludge discharge pipe.
5. The nitrification-denitrification circulating water treatment system according to any one of claims 1 to 4, wherein: and each buffer solution storage unit is respectively provided with a metering pump, and the metering pumps can control the flow of the liquid flowing through the buffer solution storage units.
6. The nitrification-denitrification circulating water treatment system according to claim 5, wherein: the device also comprises an ultraviolet disinfection device, and the treated water flow passes through the ultraviolet disinfection device after passing through the adjusting device.
7. The nitrification-denitrification circulating water treatment system according to claim 6, wherein: still include sand filtration device, sand filtration device establishes adjusting device with between the ultraviolet disinfection device, sand filtration device includes sand bed, grit intercepting device and a plurality of drainage cap, the drainage cap is established the lower part of sand bed, grit intercepting device establishes the upper portion of sand bed, the rivers that receive the processing flow through in proper order the drainage cap the sand bed with grit intercepting device.
8. The nitrification-denitrification circulating water treatment system according to claim 7, wherein: and the sand filtering device is provided with an access hole, and the access hole is arranged on one side of the sand bed.
9. The nitrification-denitrification circulating water treatment system according to claim 8, wherein: the sand filter device comprises an adjusting device and is characterized in that a first flow adjusting valve is arranged between the adjusting device and the sand filter device, a second flow adjusting valve and a third flow adjusting valve are further arranged on the sand filter device, the first flow adjusting valve can control the on-off state and the water flow of water flow between the adjusting device and the sand filter device, the second flow adjusting valve and the third flow adjusting valve are respectively communicated with the bottom of the sand filter device, the second flow adjusting valve can exhaust water flow in the sand filter device, and the third flow adjusting valve can inject water flow for washing a sand bed into the sand filter device and adjust the water flow.
10. The nitrification-denitrification circulating water treatment system according to claim 9, wherein: still include fan and a plurality of gas distribution pipe, the gas distribution pipe includes first gas distribution pipe, second gas distribution pipe and third gas distribution pipe, first gas distribution pipe with nitrify the chamber intercommunication, the second gas distribution pipe with adjust the chamber intercommunication, the third gas distribution pipe with sand filter device intercommunication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920388890.6U CN209890451U (en) | 2019-03-25 | 2019-03-25 | Nitrification and denitrification circulating water treatment system |
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| CN201920388890.6U CN209890451U (en) | 2019-03-25 | 2019-03-25 | Nitrification and denitrification circulating water treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111657211A (en) * | 2020-06-04 | 2020-09-15 | 湖北省科技信息研究院 | Intelligent cluster aquaculture system and control method |
| CN112320949A (en) * | 2020-10-21 | 2021-02-05 | 江西挺进环保科技有限公司 | Nitrification-denitrification coupling biological membrane system for slowly releasing organic carbon source |
-
2019
- 2019-03-25 CN CN201920388890.6U patent/CN209890451U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111657211A (en) * | 2020-06-04 | 2020-09-15 | 湖北省科技信息研究院 | Intelligent cluster aquaculture system and control method |
| CN112320949A (en) * | 2020-10-21 | 2021-02-05 | 江西挺进环保科技有限公司 | Nitrification-denitrification coupling biological membrane system for slowly releasing organic carbon source |
| CN112320949B (en) * | 2020-10-21 | 2022-12-16 | 江西挺进环保科技股份有限公司 | A nitrification-denitrification coupled biofilm system with slow release of organic carbon source |
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Granted publication date: 20200103 |