A method for treating, reusing and recycling aquaculture wastewater
Through ultrasonic accelerated oxidation and rapid reaction precipitation technology, combined with the ceramic stacking process and biological hierarchical oxidation facilities, the water quality adjustment is used to solve the problem of pollutant removal in aquaculture wastewater, and the efficient, environmentally friendly and low-cost wastewater treatment and recycling are achieved.
Patent Information
- Application Number
- CN202411701379.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-04-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to effectively treat pollutants in aquaculture wastewater, especially in the case of unstable drainage and increased environmental protection requirements, and there is a lack of cost-effective treatment methods to realize the recycling of wastewater.
Ultrasonic accelerated oxidation + rapid reaction precipitation technology is adopted, combined with the ceramic stacking process and biological hierarchical oxidation facilities, through multi-layer oxidation and filtration, the oxidation pond is used to adjust and condition water quality to achieve deepened oxidation and pollutant removal.
It has achieved efficient removal of organic pollutants, ammonia nitrogen and total phosphorus in the breeding wastewater, with treatment rates close to 40%, 65% and 62% respectively, and it is adapted to the drainage characteristics of the breeding process, meets environmental protection requirements, and achieves zero emissions, while reducing energy consumption, drug consumption and labor investment.
Smart Images
Figure CN119750807A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of water, wastewater, sewage or sludge treatment, and in particular to a method for treating, reusing and resource-recovering aquaculture wastewater. Background Art
[0002] Aquaculture wastewater is wastewater generated during animal breeding, including drinking water, excrement and feed residues in farms. Aquaculture wastewater contains a lot of nitrogen, phosphorus, organic matter and other substances, and the content is extremely high. Some are even higher than domestic sewage, among which ammonia nitrogen content is the highest. If these substances are discharged at will, they will cause great pollution to the water environment. Most of the existing aquaculture wastewater is treated by flotation or contact oxidation, coagulation sedimentation + oxidation pond technology, and the treated water is discharged directly. With the increasing requirements for environmental protection and water resource utilization, there is an urgent need for a treatment method that can not only treat pollutants in aquaculture wastewater well, but also adapt to the laws of the aquaculture industry (unstable discharge volume, a long period of no production throughout the year) and has a reasonable cost, so as to ultimately achieve the recycling of wastewater after treatment. Summary of the invention
[0003] In order to solve the above technical problems, the present invention provides a method for treating, reusing and recycling aquaculture wastewater to solve the problems described in the above background technology.
[0004] The purpose and effect of the method for treating, reusing and recycling aquaculture wastewater of the present invention are achieved by the following specific technical means: S1: Add polyacrylamide into the test device, and then fill the test device with aquaculture wastewater, while performing air aeration to start a rapid reaction; S2: Start the ultrasonic device, which will vibrate the aquaculture wastewater, thereby accelerating the oxidation reaction. Figure 2 As shown; S3: After ultrasonic treatment, the aquaculture wastewater is left to stand for 30 min, and the sludge is discharged through the lower end of the test device; S4: Then, add flocculation and precipitation agent into the aquaculture wastewater, stir it with a stirrer, and let it stand for 30 minutes after stirring; S5: Take out surface water and test the pollutants in the treated water.
[0005] Preferably, the ceramsite stacking process is used, integrating aerobic and biological filtration process.
[0006] Preferably, the water level difference is used as the driving force for water flow, and the water is layered and stacked to achieve the effects of aerobic oxidation of water and ceramsite filtration.
[0007] Preferably, the goal of further deepening the oxidation of water is achieved through multi-level oxidation and filtration.
[0008] Preferably, further oxidation and regulation of organic matter in the water is achieved through water quality adjustment and conditioning in the oxidation pond.
[0009] Preferably, water regulation of the oxidation pond deeply regulates the processing capacity and adaptability of the system.
[0010] Beneficial effects: 1. Compared with other domestic and foreign aquaculture wastewater treatment processes, the present invention has strong adaptability to incoming water quality, stable operation, stable effluent, can meet the reuse standards in combination with actual conditions, has low production costs, and is safe and environmentally friendly; 2. Ultrasonic accelerated oxidation + rapid reaction precipitation technology is used to improve the treatment efficiency of pollutants in water. After testing, the treatment rate of organic pollutants is close to 40%, the ammonia nitrogen removal rate reaches 65%, and the total phosphorus treatment rate reaches 62%; 3. Through the treatment of biological hierarchical oxidation facilities + oxidation ponds, the overall process can achieve a stable and highly adaptable effect, better adapt to the drainage characteristics of the breeding process, and combine different processes in different breeding stages to meet environmental protection requirements and achieve zero emissions, while optimizing the overall energy consumption, drug consumption, and labor input. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a diagram of the rapid reaction precipitation system of the present invention.
[0012] Figure 2 To deepen the oxidation system diagram of the present invention.
[0013] Figure 3 This is a diagram of some facilities for regulating and adjusting the present invention.
[0014] Figure 4 This is a diagram of the oxidation pond stabilization treatment system of the present invention. DETAILED DESCRIPTION
[0015] The present invention will be described below with reference to examples; however, the present invention is not limited to the following examples.
[0016] In addition, in the following description, unless otherwise specified, % refers to m / m mass percentage. All reagents, raw materials and instruments used in the present invention are well known in the art and can be purchased from the market, but do not limit the implementation of the present invention. Other reagents and equipment well known in the art can be applied to the implementation of the following embodiments of the present invention. Example
[0017] This embodiment provides a method for treating and reusing aquaculture wastewater, and the specific steps are as follows: S1: Add polyacrylamide into the test device, and then fill the test device with aquaculture wastewater, while performing air aeration to start a rapid reaction; S2: Start the ultrasonic device, which will vibrate the aquaculture wastewater, thereby accelerating the oxidation reaction. Figure 2 As shown; S3: After ultrasonic treatment, the aquaculture wastewater is left to stand for 30 min, and the sludge is discharged through the lower end of the test device; S4: Then, add flocculation and precipitation agent into the aquaculture wastewater, stir it with a stirrer, and let it stand for 30 minutes after stirring; S5: Take out surface water and test the pollutants in the water; Adopting ceramsite stacking process, integrating aerobic and biological filtration process; Using the water level difference as the driving force of water flow, the water is layered and stacked to achieve the effect of aerobic oxidation of water and ceramsite filtration; Through multi-level oxidation and filtration, the goal of further deepening the oxidation of water is achieved; Through the water quality adjustment and conditioning of the oxidation pond, further oxidation and regulation of organic matter in the water can be achieved; Water regulation in oxidation ponds deeply regulates the system’s processing capacity and adaptability; Example
[0018] Focusing on the characteristics of aquaculture wastewater, the pre-oxidation treatment and biological hierarchical oxidation facilities are used to effectively remove the main organic pollutants, NH3-N, TP, etc. in the water. Finally, after conditioning in the oxidation pond and further removing pollutants in the water, the effluent can meet the aquaculture wastewater discharge standards and aquaculture reuse requirements, thereby realizing the water recycling of the aquaculture park and achieving zero discharge of park water; Example
[0019] Ultrasonic accelerated oxidation + rapid reaction precipitation technology is used to improve the treatment efficiency of pollutants in water. After testing, the treatment rate of organic pollutants is close to 40%, the removal rate of ammonia nitrogen reaches 65%, and the total phosphorus treatment rate reaches 62%; Example
[0020] Through the treatment of biological hierarchical oxidation facilities + oxidation ponds, the overall process can achieve a stable and highly adaptable effect, better adapt to the drainage characteristics of the breeding process, and combine different processes in different breeding stages to meet environmental protection requirements and achieve zero emissions, while optimizing overall energy consumption, drug consumption, and labor input.
[0021] Technical personnel should note that although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention, and any modification using the inventive concept will be included in the scope of protection of this patent.
Claims
1. A method for treating, reusing and recycling aquaculture wastewater, characterized in that: The method for treating and reusing aquaculture wastewater and recycling it specifically comprises the following steps: S1: Add polyacrylamide into the test device, and then fill the test device with aquaculture wastewater, while performing air aeration to start a rapid reaction; S2: Start the ultrasonic device, which vibrates the aquaculture wastewater raw water, thereby accelerating the oxidation reaction; S3: After ultrasonic treatment, the aquaculture wastewater is left to stand for 30 min, and the sludge is discharged through the lower end of the test device; S4: Then, add flocculation and precipitation agent into the aquaculture wastewater, stir it with a stirrer, and let it stand for 30 minutes after stirring; S5: Take out surface water and test the pollutants in the treated water.
2. The method for treating, reusing and recycling aquaculture wastewater according to claim 1, characterized in that: The process adopts ceramsite stacking technology and integrates aerobic and biological filtration.
3. The method for treating, reusing and recycling aquaculture wastewater according to claim 1, characterized in that: The test device utilizes water level difference as the power for water flow and is stacked in layers.
4. The method for treating, reusing and recycling aquaculture wastewater according to claim 1, characterized in that: The goal of further deepening the oxidation of water is achieved through multi-level oxidation and filtration.
5. The method for treating, reusing and recycling aquaculture wastewater according to claim 1, characterized in that: The water quality adjustment and conditioning of the oxidation pond is used to further oxidize and regulate the organic matter in the water.
6. The method for treating, reusing and recycling aquaculture wastewater according to claim 1, characterized in that: The water regulation of the oxidation pond deeply regulates the processing capacity and adaptability of the system.