CN218810908U - Deamination processing system of aquaculture wastewater - Google Patents
Deamination processing system of aquaculture wastewater Download PDFInfo
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- CN218810908U CN218810908U CN202123067061.4U CN202123067061U CN218810908U CN 218810908 U CN218810908 U CN 218810908U CN 202123067061 U CN202123067061 U CN 202123067061U CN 218810908 U CN218810908 U CN 218810908U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model discloses a deamination treatment system for aquaculture wastewater, which comprises a water inlet tank and a degassing membrane device, wherein a water outlet of the water inlet tank is connected with a water inlet of the degassing membrane device through a water inlet pump, and the pH value of the wastewater entering the degassing membrane device is 11-12; the acid solution degassing device is characterized by further comprising an acid solution tank, wherein a liquid outlet of the acid solution tank is connected with an acid solution inlet of the degassing membrane device through a liquid inlet pump, and an acid solution outlet of the degassing membrane device is connected with the acid solution tank. The ammonia nitrogen of the existing aquaculture wastewater treatment mainly adopts biochemistry A 2 The system is mainly a/O system, a biochemical system occupies large space and is greatly influenced by the environmental temperature in the operation process, so that the concentration of ammonia nitrogen in the effluent is unstable, and A is simultaneously 2 the/O can only convert ammonia nitrogen in water into nitrate nitrogen, and although the ammonia nitrogen content in the water is reduced, the total nitrogen is not changed; the denitrification treatment process greatly reduces the investment and construction cost and the occupied area of a post biochemical treatment device, and can reduce the total nitrogen value in water while reducing the ammonia nitrogen; meanwhile, the process develops the low-pressure operation condition of the degassing membrane, and reduces the operation energy consumption of the system.
Description
Technical Field
The utility model relates to a deamination processing system of aquaculture wastewater.
Background
In recent years, the development of the breeding industry is gradually changed from the former small-scale enterprises to the large-scale enterprises. With the new construction of the centralized large-scale cultivation enterprises, the matched environment-friendly construction also becomes the focus of attention of the enterprises. The environment-friendly construction in the breeding industry mainly comprises the following steps: and (4) treating waste water, waste gas and excrement waste residues. Wherein the reasonable disposal of the waste water is related to the surrounding ecological environment. Some areas can not treat the breeding wastewater until the breeding wastewater reaches the standard and is discharged, so that the foul smell in the plant area is generated. The waste water which fails to reach the standard is discharged outside, so that the sanitation of the surrounding environment is influenced, the transmitted germs and parasites even permeate into the ground, and the water quality of the ground water is damaged.
The livestock and poultry breeding discharge standard (GB 18596-2001) is as follows: BOD 5 ：150mg/L、COD：400mg/L、SS：200mg/L、NH 3 -N:80mg/L, TP:8mg/L. Ammonia nitrogen is one of the factors which are difficult to reach the standard in the water treatment discharge standard, and the oxygen content in water is reduced in the oxidation process, so that the water body is blackened and smelly. The existing ammonia nitrogen treatment system for the aquaculture wastewater comprises: sewage collection tank-centrifugal dehydration-anaerobic tank-regulating tank-primary sedimentation tank-intermediate product water tank-A 2 O-a sedimentation tank-an ozone reaction tank-a secondary sedimentation tank-end disinfection-water production. The treatment system not only occupies a large area, but also has poor ammonia nitrogen treatment effect especially in seasons with low stability.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model discloses deamination processing system area to existence among the prior art is big, and ammonia nitrogen treatment effect unstability scheduling problem provides a breed waste water deamination processing system.
The technical scheme is as follows: the utility model discloses a deamination treatment system for aquaculture wastewater, which comprises a water inlet tank and a degassing membrane device, wherein a water outlet of the water inlet tank is connected with a water inlet of the degassing membrane device through a water inlet pump, and the pH value of wastewater entering the degassing membrane device is 11-12; the acid liquor degassing device is characterized by further comprising an acid liquor tank, wherein a liquid outlet of the acid liquor tank is connected with an acid liquor inlet of the degassing membrane device through a liquid inlet pump, and an acid liquor outlet of the degassing membrane device is connected with the acid liquor tank.
The treatment system also comprises a water collecting tank, an anaerobic tank, an adjusting tank and a primary sedimentation tank which are positioned in front of the water inlet tank, the aquaculture wastewater is treated by the water collecting tank, the anaerobic tank, the adjusting tank and the primary sedimentation tank in sequence, the outlet water of the primary sedimentation tank enters the water inlet tank, the water in the water inlet tank is supernatant after the dosing coagulation sedimentation, wherein the coagulation sedimentation agent is polyaluminium chloride and polyacrylamide; and the effluent of the degassing membrane device enters an intermediate water tank, and is subjected to terminal disinfection treatment after being treated in an aerobic tank and a secondary sedimentation tank.
The device also comprises an alkali dosing device and an acid dosing device, wherein the alkali dosing device is connected with the water inlet tank, and the acid dosing device is connected with the acid liquor tank.
Wherein, the water inlet tank and the acid liquor tank are both provided with pH detectors.
Wherein the pH value of the acid liquor in the acid liquor tank is 1-2.
The device also comprises a water inlet security filter positioned between the water inlet pump and the degassing membrane device and a liquid inlet security filter positioned between the liquid inlet pump and the degassing membrane device.
Wherein, the ratio of the water inlet flow of the water inlet pump to the acid inlet flow of the liquid inlet pump is 70-75: 1. according to the content of ammonia nitrogen in the produced water, the opening of the water inlet valve is adjusted, the flow is controlled to be 150L/h, the opening of the acid inlet valve is adjusted, and the flow is controlled to be 2m 3 And h, the ammonia nitrogen removal rate in the final produced water reaches 80-90%.
Wherein the pressure of the water inlet pump is 0.04MPa, and the pressure of the acid inlet pump is 0.08MPa.
The utility model discloses the denitrogenation principle of system: by applying the characteristic that the degassing membrane device only permeates gas but not permeates liquid, sodium hydroxide is added into the aquaculture wastewater to raise the pH value in the wastewater according to the following steps: NH (NH) 4 + +OH - →NH 3 +H 2 O, precipitating ammonia nitrogen in the wastewater in a gas form under the condition of high pH; according to 2NH 3 +H 2 SO 4 ＝(NH 4 ) 2 SO 4 And the separated gas (ammonia gas) is absorbed by sulfuric acid solution when passing through a degassing membrane device which is only ventilated and does not pass through water, so that the aim of removing ammonia nitrogen in the wastewater is fulfilled.
Has the advantages that: the ammonia nitrogen of the existing aquaculture wastewater treatment mainly adopts biochemistry A 2 the/O system is mainly used, the biochemical system occupies large space and is greatly influenced by the environmental temperature in the operation process, the concentration of ammonia nitrogen in the effluent is unstable, and simultaneously A 2 the/O can only convert ammonia nitrogen in water into nitrate nitrogen, and although the ammonia nitrogen content in the water is reduced, the total nitrogen concentration is not reduced; the denitrification treatment process of the utility model greatly reduces the later stage biochemistryInvestment and construction cost and occupied area of the treatment device are higher than those of the traditional A in terms of occupied space and system operation stability 2 the/O treatment system can reduce the total nitrogen value in water while reducing ammonia nitrogen; meanwhile, the process develops the low-pressure operation condition of the degassing membrane, and reduces the operation energy consumption of the system.
Drawings
FIG. 1 is a schematic diagram of a deamination processing system that uses a degassing membrane to remove ammonia;
FIG. 2 is a flow chart of the deamination treatment system of the present invention;
FIG. 3 shows A in the prior art 2 A flow diagram of the/O system;
FIG. 4 is a graph showing the variation of ammonia nitrogen concentration in the produced water during the continuous operation of the deamination treatment system.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings and the specific embodiments.
As shown in fig. 1, the deamination treatment system for aquaculture wastewater of the present invention comprises a water inlet tank 1 and a degassing membrane device 4, wherein the degassing membrane device 4 comprises a water inlet a, a water outlet b, an acid inlet c and an acid outlet d; a water outlet of the water inlet tank 1 is connected with a water inlet a of the degassing membrane device 4 through a water inlet pump 2, wastewater in the water inlet tank 1 is supernatant liquid after dosing and coagulating sedimentation, the water inlet tank 1 is connected with an alkali dosing device 8, the alkali dosing device 8 adjusts the pH value of the wastewater in the water inlet tank 1 by adopting sodium hydroxide, and the water inlet tank 1 is also provided with a pH detector; adjusting the pH value of the wastewater in the water inlet tank 1 to 11-12 by an alkali dosing device 8; the utility model discloses acid liquor case 5 of deamination treatment system of aquaculture wastewater, acid liquor case 5 are connected with acid charge device 9, the acidizing fluid in acid liquor case 5 is sulfuric acid solution, the pH value of acidizing fluid in acid liquor case 5 is 1-2, also be equipped with the pH meter on acid liquor case 5; the liquid outlet of the acid liquid tank 5 is connected with the acid liquid inlet c of the degassing membrane device 4 through the liquid inlet pump 6, and the acid liquid outlet d of the degassing membrane device 4 is connected with the acid liquid tank 5, so that the circulation of the acid liquid is formed.
The utility model discloses breed deaminizing processing system of waste water still including the feed liquor cartridge filter 7 that is located the feed liquor pump 3 between water intake pump 2 and the degasification membrane device 4 (feed liquor cartridge filter 3 gets rid of remaining solid impurity in the waste water) and is located between feed liquor pump 6 and the degasification membrane device 4 (feed liquor cartridge filter 7 gets rid of the solid impurity that probably exists in the acidizing fluid case 5).
The utility model discloses the working process of system: feeding aquaculture wastewater of a farm into a water inlet tank 1 after pretreatment of dosing and coagulating sedimentation, feeding a sodium hydroxide solution into the water tank 1 through a dosing pump of an alkali dosing device 8, and judging whether dosing is stopped or not according to a pH detector in the water inlet tank 1; the wastewater after pH adjustment is pressurized by a water inlet pump 2 and then is pressed into a cartridge filter 3, an outlet valve of the water inlet pump 2 is adjusted to control the flow rate to be 150L/h and the pressure to be 0.04Mpa, the wastewater enters a degassing membrane device 4 from a water inlet a of the degassing membrane device 4 after passing through the cartridge filter 3, and water discharged from a water outlet b of the degassing membrane device 4 enters a subsequent system; injecting clear water into the acid liquor tank 5, adding sulfuric acid into the acid liquor tank 5 through a dosing pump of a sulfuric acid dosing device 9, and judging whether dosing is stopped or not according to a pH detector in the acid liquor tank 5; pressurizing the acid liquor by the liquor inlet pump 6, pressing the acid liquor into the liquor inlet security filter 7, and simultaneously regulating the outlet valve of the liquor inlet pump 6 to control the flow of the acid liquor to be 2m 3 And/h, the pressure is 0.08Mpa, the acid solution enters the degassing membrane device 4 from the acid solution inlet c of the degassing membrane device 4 after passing through the liquid inlet cartridge filter 7, and the acid solution enters the acid solution tank 5 from the acid solution outlet d of the degassing membrane device 4 for recycling.
The raw water is got from the anaerobism of the pig wastewater treatment system of a certain plant in Wenzhou of Zhejiang and is gone out water, gets 700L of raw water (ammonia nitrogen concentration is 2650mg/L in the raw water), adds behind polyaluminium chloride (PAC) and Polyacrylamide (PAM) carry out the coagulating sedimentation, gets into the utility model discloses deamination system. Adding the agent into the coagulating sedimentation for 3 times, adding PAM into the mixture after PAC is fully stirred for 10-20min each time, stirring for 5-10min, precipitating for 20min, fishing out sludge on the surface and the bottom after PAC and PAM are added once, and adding the agent for the next time. The supernatant that obtains after the coagulating sedimentation is discharged the utility model discloses in the water tank 1 of system, the waste water in the water tank 1 is 2033mg/L through the concentration that detects the ammonia nitrogen. The total adding amount of the coagulating sedimentation medicament is as follows: solid PAC:2.871kg, liquid PAM (mass concentration 0.1%): 14.91L.
As shown in fig. 4, the utility model discloses after the system operation 10min, the ammonia nitrogen concentration of the aquatic (from 4 delivery port b exhaust water of degasification membrane device promptly) of system production is 382mg/L, and the ammonia nitrogen clearance has reached 81.3%, and after system operation 20min, the ammonia nitrogen concentration of the aquatic of system production tends to steadily (about 256 mg/L), and the ammonia nitrogen clearance has reached 88.8%.
The system is intake (after coagulating) ammonia nitrogen concentration is 2033mg/L, and the system is through 9 hours's continuous operation, and it can be stable between 250-270mg/L to go out water, again through aerobic treatment, and the clearance to ammonia nitrogen in the breed waste water finally can reach more than 90%, the utility model discloses a greatly reduced rear end biochemical treatment system's dwell time has saved investment construction cost simultaneously.
General A 2 Because the influence of the environmental temperature is great, the ammonia nitrogen concentration in the produced water is unstable, and the quality of the produced water is stable by adopting the absolute degassing membrane treatment process in the system. Furthermore, the pressure of the feed water pump and the feed acid pump was 0.1MPa, depending on the conventional energy consumption of the degassing membrane. The operating pressure of the system is only 0.04MPa and 0.08MPa, and the operating pressure is reduced by 30 percent compared with the prior treatment technology.
Claims (8)
1. The utility model provides a breed deaminizing processing system of waste water which characterized in that: the device comprises a water inlet tank and a degassing membrane device, wherein a water outlet of the water inlet tank is connected with a water inlet of the degassing membrane device through a water inlet pump, and the pH value of wastewater entering the degassing membrane device is 11-12; the acid liquor degassing device is characterized by further comprising an acid liquor tank, wherein a liquid outlet of the acid liquor tank is connected with an acid liquor inlet of the degassing membrane device through a liquid inlet pump, and an acid liquor outlet of the degassing membrane device is connected with the acid liquor tank.
2. The deamination treatment system for aquaculture wastewater of claim 1, wherein: the treatment system also comprises a collecting tank, an anaerobic tank, an adjusting tank and a primary sedimentation tank which are positioned in front of the water inlet tank, and after the culture wastewater is sequentially treated by the collecting tank, the anaerobic tank, the adjusting tank and the primary sedimentation tank, the effluent of the primary sedimentation tank enters the water inlet tank; and the effluent of the degassing membrane device enters an intermediate water tank, and is subjected to terminal disinfection treatment after being treated in an aerobic tank and a secondary sedimentation tank.
3. The deamination treatment system for aquaculture wastewater of claim 1, wherein the deamination treatment system comprises: the device also comprises an alkali dosing device and an acid dosing device, wherein the alkali dosing device is connected with the water inlet tank, and the acid dosing device is connected with the acid liquor tank.
4. The deamination treatment system for aquaculture wastewater of claim 1, wherein: and pH detectors are arranged in the water inlet tank and the acid liquor tank.
5. The deamination treatment system for aquaculture wastewater of claim 1, wherein: the pH value of the acid liquor in the acid liquor tank is 1-2.
6. The deamination treatment system for aquaculture wastewater of claim 1, wherein: the device also comprises a water inlet safety filter positioned between the water inlet pump and the degassing membrane device and a liquid inlet safety filter positioned between the liquid inlet pump and the degassing membrane device.
7. The deamination treatment system for aquaculture wastewater of claim 1, wherein: the ratio of the water inlet flow of the water inlet pump to the acid inlet flow of the liquid inlet pump is 70-75: 1.
8. the deamination treatment system for aquaculture wastewater of claim 1, wherein: the pressure of the water inlet pump is 0.04Mpa, and the pressure of the acid inlet pump is 0.08Mpa.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021224479812 | 2021-10-12 | ||
| CN202122447981 | 2021-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218810908U true CN218810908U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123067061.4U Active CN218810908U (en) | 2021-10-12 | 2021-12-08 | Deamination processing system of aquaculture wastewater |
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| Country | Link |
|---|---|
| CN (1) | CN218810908U (en) |
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2021
- 2021-12-08 CN CN202123067061.4U patent/CN218810908U/en active Active
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