AB oxidation ditch, one of the accented terms of annually produce 68,000 tons bleached bagasse pulp technical transformation project, has all been accomplished. This project, with the sewage treatment capacity of 50000m3/d and total investment is 38 million yuan, is now the largest sewage disposal system of pulping enterprise in Guangxi.

 

Biological Treatment System of Wastewater is designed with influent COD concentration of 1500mg/L and effluent COD concentration≤150mg/L and uses AB- Carrousel process of Dutch company DHV. DHV (Beijing) Environmental Engineering Co., Ltd. is responsible for the design and delivery of core equipment. After the system operates, sewage treatment capacity of Paper Industry Branch Company will be raised to 25,000 tons / day and daily sewage treatment capacity to 37,000 tons. This biological sewage treatment process engineering has been widely used diverse industrial wastewater treatment, including pulping, paper making, chemical and petrochemical industry, brewhouse, food processing and so on. The sewage treated by this biological sewage system reaches the national allowable sewage Discharge Standards. The biological treatment technology of wastewater has good reliability, low operation cost, excellent benefits and high efficiency etc.