Advanced treatment method for excrement biogas slurry in cattle raising industry
A technology for advanced treatment and cattle breeding, which is applied in water/sewage treatment, animal husbandry wastewater treatment, multi-stage water/sewage treatment, etc. It can solve the problems of ineffective advanced treatment and reduce investment costs and energy consumption , to ensure stability and reduce the concentration of organic matter in raw water
Active Publication Date: 2022-06-07
常州市钜岳水务环保科技股份有限公司
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AI Technical Summary
Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a biogas slurry treatment method for cattle breeding wastewater, which overcomes the fact that the existing technology does not have a method for advanced treatment of this kind of biogas slurry and that the combination of existing sewage treatment technology still cannot effectively carry out advanced treatment. Dealing with the problem
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Experimental program
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Effect test
Embodiment Construction
[0018] The technical solution of the present invention is further analyzed and described in detail, clearly and completely below. Obviously, the described implementation is only a part of the implementation means of the present invention, rather than all the implementation means. Based on the implementation means in the present invention, the common All other implementation means obtained by the technical personnel without creative work shall fall within the protection scope of the present invention.
[0019] Since the advanced treatment process of biogas slurry is relatively complex, the following analysis and description will focus on introducing the aspects of the present invention that are different from the prior art, and the similarities with the prior art will only be briefly described.
[0020] A method for advanced treatment of cattle manure and sewage biogas slurry, comprising the following steps:
[0021] (1) Put the biogas slurry into the stable pond for temporary ...
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The invention relates to the technical field of sewage treatment, in particular to an advanced treatment method for excrement biogas slurry in cattle raising industry, which overcomes the problems that the advanced treatment method for the biogas slurry does not exist in the prior art and the advanced treatment cannot be effectively carried out after the combination of the existing sewage treatment technologies, and comprises the following steps: (1) temporarily storing and homogenizing the biogas slurry in a stabilization pond; (2) the biogas slurry passes through a suspended matter removal device, and part of suspended matter in the biogas slurry is removed through dosing coagulation and dissolved air flotation; (3) carrying out AAO reaction treatment on the sewage to remove nitrogen and phosphorus; (4) carrying out acidification stripping treatment on the sewage to remove lignin-like substances contained in the liquid, and then carrying out Fenton oxidation and neutralization treatment; (5) flocculating and precipitating the sewage and discharging clear water; in the acidification stripping process, acid is added to enable the sewage to be acidic, the surface tension of the sewage is changed, floating foams adhering to lignin-like substances are formed by aeration, the foams are sucked away by a foam suction device, centrifugal machine blades of the foam suction device cut up the foams and the lignin-like substances to form discharged thick slurry, and the thick slurry is neutralized and returned to the field.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for advanced treatment of manure and biogas slurry in cattle raising industry. Background technique [0002] The cattle industry includes the breeding of beef cattle and dairy cows. The wastewater includes urine, dung, feed residue, milking parlour washing water and domestic sewage, as well as the wastewater discharged when the water-flushing process is used in the breeding process. The biggest feature of this wastewater is suspension. At the same time, due to the high content of refractory substances (cellulose, hemicellulose, lignin) in the wastewater, the B / C ratio of ≤ 0.1 will appear at the end of the conventional biochemical process, and the biodegradability is poor. In general, the difficulty in the treatment of this type of wastewater lies in denitrification and the removal of refractory substances, especially the removal of refractory substances; at pre...
Claims
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IPC IPC(8): C02F9/14C02F1/52C02F1/54C02F1/24C02F3/30C02F1/72C02F1/66C02F1/461C02F1/56C02F101/16C02F101/30C02F103/20
CPCC02F9/00C02F1/5236C02F1/54C02F1/24C02F3/302C02F1/725C02F1/66C02F1/46176C02F1/56C02F2101/16C02F2101/30C02F2103/20C02F2301/08Y02A40/20
Inventor 朱鹤烽沈钜岳胡红武
Owner 常州市钜岳水务环保科技股份有限公司