Gate to Gate
Identity ID
43e80031-c02d-477c-a23f-de2bb875cd5d
Process class
Associated ID
4a8bca82-28ca-4457-8ef3-e69fa0c63529
Included activities starts
Included activities ends
Description
The process first establishes an accident equalization tank as the initial step of pretreatment, which serves to regulate the quality and quantity of wastewater to meet the requirements of subsequent treatment processes, ensuring the stable operation of the entire treatment system. Following this, the primary sedimentation tank removes large suspended solids from the wastewater through gravitational settling, thereby reducing the load on subsequent biological treatment. The iron-carbon reduction process utilizes micro-electrolysis principles, where iron-carbon media react with organic compounds in the wastewater through redox reactions, effectively enhancing the biodegradability of the wastewater and laying a solid foundation for subsequent biological treatment. The hydrolysis acidification tank uses microbial action to convert refractory organic matter into biodegradable small-molecule organics, further enhancing the wastewater's biotreatability. The A/O tank (using MBBR technology) combines anoxic and aerobic environments to remove organic matter and nitrogen via microbial metabolism, achieving efficient biological nitrogen and phosphorus removal. The secondary sedimentation tank further separates treated sludge and purified water through sedimentation, reducing the load on subsequent treatment processes. The high-efficiency sedimentation tank removes suspended solids and some dissolved pollutants through chemical coagulation, ensuring clear effluent. The ozone oxidation unit utilizes the strong oxidizing property of ozone to deeply treat refractory organic compounds, enhancing the safety of the effluent. The biological aerated filter (BAF) combines biological degradation and physical filtration to effectively remove organic matter and ammonia nitrogen from water, further improving effluent quality. The denitrification filter removes nitrate nitrogen through microbial denitrification, reducing the risk of water eutrophication. The activated carbon filtration unit adsorbs residual organic compounds and odors using activated carbon, ensuring the purity of the effluent. Finally, the disinfection process in the effluent uses disinfectants to kill pathogenic microorganisms in water, ensuring the effluent meets safe discharge standards.
Activity Description
The wastewater treatment process includes: an accident equalization tank for stabilizing the quality and flow rate of sewage; a primary clarifier to remove large suspended solids from the wastewater; iron-carbon reduction technology that enhances wastewater biodegradability through micro-electrolysis; a hydrolysis and acidification process that converts refractory organic compounds into biodegradable small-molecule organics; an A/O reactor (utilizing MBBR technology) that effectively removes organic matter and nitrogen under anaerobic and aerobic conditions; a secondary clarifier for further water clarification through solid-liquid separation; a high-efficiency sedimentation tank that removes suspended solids via chemical coagulation; an ozone oxidation unit to enhance organic matter removal; and a biological aerated filter (BAF) that combines biological degradation with physical filtration to improve effluent quality. quality; denitrification filter removes nitrate nitrogen; activated carbon filtration adsorbs residual organic matter; finally, effluent disinfection ensures safe and compliant discharge of water quality.
Process Description
Wastewater treatment services typically include four main aspects: pretreatment, primary treatment, secondary treatment, and tertiary treatment, ensuring the stable operation of the wastewater treatment system and compliance of the effluent water quality with regulatory standards.
Time period
2022
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
This activity represents the treatment of wastewater with specific technologies in the WWTP.