氧化沟工艺在某市污水处理厂设计中的应用

Application of oxidation ditch process in a city sewage treatment plant design

某市污水处理厂工程设计水量达到5.86万t/d。该污水厂的污水处理采用预处理和Carrousel氧化沟工艺,然后经二沉池出水。污泥处理采用浓缩池进行污泥浓缩,然后进入消化池,经过消化的污泥经进一步脱水后填埋。出水达到国家污水综合排放标准(GB18978-2002)一级B标准。

The sewage treatment plant project of a city is designed to reach 58600 tons of water / day. The sewage treatment process in this wastewater treatment plant is pretreatment and carrousel oxidation ditch, then the effluent outflow from the secondary settling tank. Sludge treatment using concentration basin to enrich it, then the sludge goes into the digestive pool, and landfilling after digestion by further dehydration. Implementa- tion of the national sewage effluent discharge standards （GB18978 -2002） reached 1B standard.