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High-temperature anaerobic fermentation process for breeding wastewater

A high-temperature anaerobic fermentation and breeding wastewater technology, which is applied in aerobic and anaerobic process treatment, anaerobic digestion treatment, animal husbandry wastewater treatment, etc., to achieve the effects of accelerating release, preventing accumulation, and shortening start-up time

Pending Publication Date: 2022-05-27
湖北中新开维现代牧业有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to propose a high-temperature anaerobic fermentation process for aquaculture wastewater to solve the deficiencies of existing wastewater treatment schemes

Method used

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  • High-temperature anaerobic fermentation process for breeding wastewater

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Embodiment

[0023] The aquaculture wastewater indicators used in this example are OLR=3.125, TS=5.208g·L -1 .

[0024] First, the collected aquaculture wastewater is pretreated, and the wastewater is pumped into the aeration adjustment tank through the water collection well, and the aquaculture wastewater is acidified and hydrolyzed. The hydraulic retention time is 4.5h. At the same time, a submersible mixer is installed in the aeration tank, which can maintain the The movement of the middle water flow improves the hydrolysis efficiency and prevents the sludge deposition from affecting the subsequent use of the aeration tank; then the wastewater is passed into the 22-grid baffled anaerobic reaction tank with a length of 31 meters, and the wastewater is added to the gas-liquid heating mixer with steam. It is heated to 55°C for anaerobic fermentation, and the wastewater flows in the anaerobic reaction tank through baffles during fermentation to ensure the residence reaction time of the wast...

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Abstract

The invention relates to a high-temperature anaerobic fermentation process for breeding wastewater, which is mainly characterized in that the temperature of the breeding wastewater during biogas fermentation treatment is increased to more than 50 DEG C. The high-temperature anaerobic fermentation has very outstanding advantages in the aspects of gas yield, hydraulic retention time, degradation rate and the like. High-temperature anaerobic fermentation is remarkably improved in the aspects of maximum daily gas yield, methane content, TS removal rate and VS removal rate, the fermentation period of the wastewater can be greatly shortened, and the treatment efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a high-temperature anaerobic fermentation process for aquaculture wastewater. Background technique [0002] The aquaculture wastewater discharged from animal husbandry production farms in the production process is mainly composed of urine, residual manure, hair, feed residue and flushing water. Some farms also include domestic wastewater generated in the production process. accounted for the vast majority. Due to the high concentration of organic matter in farm wastewater, which contains a large amount of nitrogen, phosphorus, suspended solids, pathogenic bacteria and other components, if these pollutants are not properly treated, once they enter natural water bodies and farmland, they will cause serious environmental pollution. . Farm wastewater is a high-concentration organic wastewater rich in a large number of pathogens. It is directly discharged in...

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Application Information

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IPC IPC(8): C02F9/14C02F103/20
CPCC02F3/28C02F3/30C02F2001/007C02F2103/20C02F2301/10Y02E50/30
Inventor 诸葛文达金林耿浩肖志恒
Owner 湖北中新开维现代牧业有限公司
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