CN113943083B - Method for treating tail water of concentrated continuous pond culture - Google Patents
Method for treating tail water of concentrated continuous pond culture Download PDFInfo
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- CN113943083B CN113943083B CN202111312627.7A CN202111312627A CN113943083B CN 113943083 B CN113943083 B CN 113943083B CN 202111312627 A CN202111312627 A CN 202111312627A CN 113943083 B CN113943083 B CN 113943083B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a concentrated connected pond culture tail water treatment method, belonging to the technical field of aquaculture tail water treatment; the method comprises the following steps: firstly, precipitating culture tail water, adding nitrobacteria into obtained supernatant, carrying out aeration treatment, then introducing ozone, filtering, adding a water treatment agent into filtrate for treatment, and filtering again after the treatment is finished; the method comprises the steps of firstly precipitating the culture tail water to remove solid wastes such as large-particle residual baits and the like, then sequentially treating the culture tail water by nitrobacteria and ozone to remove most of ammonia nitrogen and COD in the water body, and further adopting a culture medium containing nano oyster shell powder, potassium silicate, bentonite and nano TiO 2 And the water treatment agent of the composite microbial inoculum is used for treatment, further removing ammonia nitrogen and COD, and effectively removing sulfides and phosphates in the water body, so that the content of COD, ammonia nitrogen, sulfides and phosphates in the finally treated water body all reaches the standard of water for culture, and the water can be returned to the pond for cyclic utilization.
Description
Technical Field
The invention belongs to the technical field of aquaculture tail water treatment, and particularly relates to a concentrated connected pond culture tail water treatment method.
Background
With the deepening of the development idea of green agriculture, the tail water pollution problem of the aquaculture industry increasingly becomes the key point of research, and the pollution of the aquaculture tail water to the surrounding environment needs to be reduced in order to ensure the continuous and healthy development of the aquaculture industry. The tail water treatment method adopted at present comprises a physical treatment method, a chemical treatment method, a physical and chemical treatment method, a biological treatment method and the like, the tail water is discharged into a natural water area after being treated, and simultaneously, new fresh water is added into a culture pond. However, this not only wastes fresh water resources, but also may cause eutrophication of the surrounding waters. Especially to concentrating the cultivation of a continuous pond, its cultivation scale is big, and the water waste condition is more serious, consequently if can realize high-efficient processing to breeding tail water, make it can return to and continue to recycle in the cultivation pond after handling, will significantly reduce the waste to the water resource among the concentrated continuous pond cultivation process undoubtedly. However, in order to make the aquaculture tail water meet the requirement of recycling after treatment, the indexes of COD, ammonia nitrogen, sulfide, phosphate and the like in the treated tail water need to meet the requirement of use (although phosphate is not toxic to fish, the high content of phosphate can cause the mass propagation of algae, thereby indirectly influencing the growth and propagation of fish), and the conventional treatment method for aquaculture tail water is difficult to realize the synergistic and efficient treatment of the pollutants. Therefore, the tail water treatment method capable of simultaneously treating COD, ammonia nitrogen, sulfides and phosphates in the aquaculture tail water is developed, the recycling of the pond aquaculture tail water is effectively promoted, and the establishment of a zero-pollution and zero-emission aquaculture mode is realized.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for treating tail water of concentrated connected pond culture.
In order to realize the purpose, the invention provides the following technical scheme:
the invention provides a method for treating tail water of concentrated connected pond culture, which comprises the following steps: firstly, precipitating culture tail water, adding nitrobacteria into obtained supernatant, carrying out aeration treatment, then introducing ozone, filtering, adding a water treatment agent into filtrate for treatment, and filtering again after the treatment is finished; the water treatment agent comprises nanometer oyster shell powder, potassium silicate, bentonite and nanometer TiO 2 And a complex microbial inoculum.
Preferably, the treatment time of the nitrifying bacteria is 1-2 days.
Preferably, the volume ratio of the ozone to the supernatant is (0.05-0.1) to 1, and the ozone is filtered after being treated for 10-12 hours.
Preferably, the nanometer oyster shell powder, potassium silicate, bentonite and nanometer TiO are selected 2 And the mass ratio of the composite microbial inoculum is (10-15): (3-5): (5～8)∶(4～8)∶(0.1～0.5)。
Preferably, the composite microbial agent consists of rhodopseudomonas palustris, bacillus subtilis and candida utilis according to the mass ratio of (1-3) to (1) to (3-5).
Preferably, the nano oyster shell powder is calcined at a high temperature of 400-500 ℃ for 3-4 h.
Preferably, the addition amount of the water treatment agent is 2-4 g/L of filtrate.
Preferably, the time for the water treatment agent to treat is 2-3 days.
Compared with the prior art, the invention has the following beneficial effects:
the method comprises the steps of firstly precipitating the culture tail water to remove solid wastes such as large-particle residual baits and the like, then sequentially treating the culture tail water by nitrobacteria and ozone to remove most of ammonia nitrogen and COD in the water body, and further adopting a culture medium containing nano oyster shell powder, potassium silicate, bentonite and nano TiO 2 And the water treatment agent of the composite microbial inoculum is used for treatment, so that ammonia nitrogen and COD can be further removed, sulfides and phosphates in the water body can be effectively removed, the content of COD, ammonia nitrogen, sulfides and phosphates in the finally treated water body can reach the standard of aquaculture water, and the water can be returned to the pond for recycling.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but rather as a more detailed description of certain aspects, features and embodiments of the invention. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Further, for numerical ranges in this disclosure, it is understood that each intervening value, between the upper and lower limit of that range, is also specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The description and examples are intended to be illustrative only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including but not limited to.
In the following examples, the aquaculture tail water used was from an aquaculture base in a certain concentrated connected pond in south of china, and the tail water contained COD 38mg/L, ammonia nitrogen 1.21mg/L, sulfide (as sulfur) 0.82mg/L, and phosphate 0.098 mg/L.
The adopted nitrifying bacteria are purchased from polymer core bioengineering limited company, and the number of effective viable bacteria is more than or equal to 30 hundred million/g; the adopted rhodopseudomonas palustris is purchased from Jinyu Jinyuyuan biotechnology limited; the Bacillus subtilis is purchased from Ji south China Fenghuai chemical Co., Ltd; the adopted Candida utilis is purchased from Shenzhen Xingzhou Biotech limited company.
The description will not be repeated below.
Example 1
The treatment of the tail water of the concentrated connected pond culture comprises the following steps:
(1) naturally precipitating the culture tail water, and introducing the obtained supernatant into a reaction tank;
(2) adding nitrobacteria into the supernatant obtained in the step (1), aerating, introducing ozone into the supernatant for 1.5 days according to the volume ratio of 0.07: 1 for treatment for 11 hours, and filtering to obtain filtrate;
(3) the rhodopseudomonas palustris, the bacillus subtilis and the candida utilis are combined into a composite microbial inoculum according to the mass ratio of 2: 1: 4, and then nano oyster shell powder, potassium silicate, bentonite and nano TiO are added 2 And (3) mixing the composite microbial inoculum according to the mass ratio of 12: 4: 6.5: 6: 0.3 to obtain a water treatment agent, adding the water treatment agent into the filtrate obtained in the step (2), adding 3g of water into each liter of filtrate, stirring, and filtering again after 2.5 days to obtain treated tail water.
Example 2
The method for treating tail water of concentrated continuous pond culture comprises the following steps:
(1) naturally precipitating the culture tail water, and introducing the obtained supernatant into a reaction tank;
(2) adding nitrobacteria into the supernatant obtained in the step (1), aerating, introducing ozone into the supernatant for 10 hours after 1 day according to the volume ratio of 0.05: 1, and filtering to obtain filtrate;
(3) the rhodopseudomonas palustris, the bacillus subtilis and the candida utilis are combined into a composite microbial inoculum according to the mass ratio of 1: 5, and then nano oyster shell powder, potassium silicate, bentonite and nano TiO are added 2 And (3) mixing the composite microbial inoculum according to the mass ratio of 10: 5: 8: 0.5 to obtain a water treatment agent, adding the water treatment agent into the filtrate obtained in the step (2), adding 2g of water into each liter of filtrate, stirring, and filtering again after 3 days to obtain treated tail water.
Example 3
The treatment of concentrated connected pond culture tail water includes the following steps:
(1) naturally precipitating the culture tail water, and introducing the obtained supernatant into a reaction tank;
(2) adding nitrobacteria into the supernatant obtained in the step (1), aerating, introducing ozone into the supernatant for treatment for 12 hours according to the volume ratio of 0.1: 1 after 2 days, and filtering to obtain filtrate;
(3) the rhodopseudomonas palustris is subjected to,The bacillus subtilis and the candida utilis form a composite microbial inoculum according to the mass ratio of 3: 1: 3, and then nano oyster shell powder, potassium silicate, bentonite and nano TiO are added 2 And (3) mixing the composite microbial inoculum according to the mass ratio of 15: 3: 8: 4: 0.1 to obtain a water treatment agent, adding the water treatment agent into the filtrate obtained in the step (2), adding 4g of water into each liter of filtrate, stirring, and filtering again after 2 days to obtain treated tail water.
Example 4
The treatment of the tail water of the concentrated connected pond culture comprises the following steps:
(1) naturally precipitating the culture tail water, and introducing the obtained supernatant into a reaction tank;
(2) adding nitrobacteria into the supernatant obtained in the step (1), aerating, introducing ozone into the supernatant for treatment for 11 hours according to the volume ratio of 0.07: 1 after 1.5 days, and filtering to obtain filtrate;
(3) forming a composite microbial inoculum by rhodopseudomonas palustris, bacillus subtilis and candida utilis according to the mass ratio of 2: 1: 4; calcining nanometer Concha Ostreae powder at 450 deg.C for 3.5h, and mixing with potassium silicate, bentonite, and nanometer TiO 2 And (3) mixing the composite microbial inoculum according to the mass ratio of 12: 4: 6.5: 6: 0.3 to obtain a water treatment agent, adding the water treatment agent into the filtrate obtained in the step (2), adding 3g of water into each liter of filtrate, stirring, and filtering again after 2.5 days to obtain treated tail water.
Example 5
The treatment of the tail water of the concentrated connected pond culture comprises the following steps:
(1) naturally precipitating the culture tail water, and introducing the obtained supernatant into a reaction tank;
(2) adding nitrobacteria into the supernatant obtained in the step (1), aerating, introducing ozone into the supernatant for treatment for 11 hours according to the volume ratio of 0.07: 1 after 1.5 days, and filtering to obtain filtrate;
(3) forming a composite microbial inoculum by rhodopseudomonas palustris, bacillus subtilis and candida utilis according to the mass ratio of 2: 1: 4;
(4) mixing nanometer Concha Ostreae powder with nanometer TiO 2 Adding into the filtrate obtained in the step (2), and simultaneously performing ultraviolet irradiationIrradiating with light for 12h, stopping irradiating with ultraviolet light, adding potassium silicate, bentonite and the compound microbial agent obtained in step (3), stirring, and treating for 2 days, wherein the nanometer oyster shell powder, potassium silicate, bentonite, and nanometer TiO are added 2 And the mass ratio of the composite microbial inoculum is 12: 4: 6.5: 6: 0.3, and each liter of filtrate is added with nanometer oyster shell powder, potassium silicate, bentonite and nanometer TiO 2 And 3g of composite microbial inoculum, and filtering again after the treatment is finished to obtain the treated tail water.
Comparative example 1
The difference from example 1 is that nano oyster shell powder is not added to the water treatment agent in step (3).
Comparative example 2
The difference from example 1 is that the complex microbial inoculum of step (3) does not contain Bacillus subtilis.
Comparative example 3
The difference from example 5 is that step (4) is: nano TiO is mixed with 2 Adding into the filtrate obtained in step (2), simultaneously performing ultraviolet irradiation, after 12h, stopping ultraviolet irradiation, adding nanometer Concha Ostreae powder, potassium silicate, bentonite and the compound microbial inoculum obtained in step (3), stirring, and continuously treating for 2 days, wherein the nanometer Concha Ostreae powder, potassium silicate, bentonite, and nanometer TiO are added 2 And the mass ratio of the composite microbial inoculum is 12: 4: 6.5: 6: 0.3, and each liter of filtrate is added with nanometer oyster shell powder, potassium silicate, bentonite and nanometer TiO 2 And 3g of composite microbial inoculum, and filtering again after the treatment is finished to obtain treated tail water
Effect verification
The contents of COD, ammonia nitrogen, sulfide and phosphate in the tail water treated in examples 1 to 5 and comparative examples 1 to 3 were measured, and the results are shown in table 1.
TABLE 1
As can be seen from Table 1, the method for treating the pond culture wastewater can simultaneously and obviously reduce the contents of COD, ammonia nitrogen, sulfide and phosphate in the water, and each index meets the requirement of recycling, and the treated water can be directly reused for aquaculture.
The above description is only for the preferred embodiment of the present invention, and the protection scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention, the technical solution and the inventive concept of the present invention equivalent or change within the technical scope of the present invention.
Claims (4)
1. A concentrated continuous pond culture tail water treatment method is characterized by comprising the following steps: firstly, precipitating culture tail water, adding nitrobacteria into obtained supernatant, carrying out aeration treatment, then introducing ozone, filtering, adding a water treatment agent into filtrate for treatment, and filtering again after the treatment is finished; the water treatment agent comprises nanometer Concha Ostreae powder, potassium silicate, bentonite, and nanometer TiO 2 And a complex microbial inoculum;
the specific operation method for adding the water treatment agent into the filtrate comprises the following steps: adding nanometer oyster shell powder and nanometer TiO into the filtrate 2 Simultaneously carrying out ultraviolet irradiation for 12h, stopping the ultraviolet irradiation, and then adding potassium silicate, bentonite and the composite microbial inoculum;
the composite microbial inoculum consists of rhodopseudomonas palustris, bacillus subtilis and candida utilis according to the mass ratio of (1-3) to 1 to (3-5);
the nanometer oyster shell powder, potassium silicate, bentonite and nanometer TiO 2 And the mass ratio of the composite microbial inoculum is (10-15): (3-5): (5-8): (4-8): (0.1-0.5); the addition amount of the water treatment agent is 2-4 g/L of filtrate;
the nanometer oyster shell powder is obtained by adopting high-temperature calcination treatment, and the temperature of the high-temperature calcination treatment is 400-500 ℃ and the time is 3-4 h.
2. The treatment method according to claim 1, wherein the treatment time of the nitrifying bacteria is 1 to 2 days.
3. The treatment method according to claim 1, wherein the volume ratio of the ozone to the supernatant is (0.05-0.1): 1, and the filtration is performed after the ozone treatment is performed for 10-12 h.
4. The treatment method according to claim 1, wherein the treatment time of the water treatment agent is 2 to 3 days.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352675A (en) * | 2008-03-03 | 2009-01-28 | 广东海洋大学 | Method for preparing shell powder supported active nano titanic oxide |
| CN109879353A (en) * | 2019-03-26 | 2019-06-14 | 长沙如洋环保科技有限公司 | A kind of aquiculture waste water treatment process |
| CN110331105A (en) * | 2019-07-11 | 2019-10-15 | 湖北真福医药有限公司 | A kind of sewage treatment composite bacteria agent and preparation method thereof |
| CN112616766A (en) * | 2020-12-29 | 2021-04-09 | 华中农业大学 | Improved circulating water aquaculture system and tail water treatment method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352675A (en) * | 2008-03-03 | 2009-01-28 | 广东海洋大学 | Method for preparing shell powder supported active nano titanic oxide |
| CN109879353A (en) * | 2019-03-26 | 2019-06-14 | 长沙如洋环保科技有限公司 | A kind of aquiculture waste water treatment process |
| CN110331105A (en) * | 2019-07-11 | 2019-10-15 | 湖北真福医药有限公司 | A kind of sewage treatment composite bacteria agent and preparation method thereof |
| CN112616766A (en) * | 2020-12-29 | 2021-04-09 | 华中农业大学 | Improved circulating water aquaculture system and tail water treatment method thereof |
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