CASS工艺污水处理厂设计计算书

广州市某区污水处理厂设计摘要：本设计主要是广州市某区污水处理厂的设计，该污水厂出水水质要求达到《城镇污水处理厂污染物排放标准》(GB 18918—2025)一级 A 标准和绿化水质标准，经过对可行的两种处理工艺 CASS 工艺与氧化沟工艺的比较，最终采纳现行的 SBR 变形形式 CASS 工艺。CASS 工艺主体部分采纳圆形利浦罐形式，污水从内圆向外流，从内到外依次是选择器、厌氧区，好氧区，通过改变 CASS 池的循环周期来达到氮磷的最佳去除。该污水厂设计的构筑物有平流沉淀池，格栅，提升泵房等构筑物。污泥经过污泥浓缩后再经过消化池消化处理，最后再外运。最后在污水厂平面布置的形式上采纳《给排水设计手册》相关规定。关键词：污水处理厂；CASS；平流沉砂池A sewage treatment plant design in a district of GuangzhouStudent: Adviser: Wang Zhiyong (College of Civil Engineering and Architecture，Taizhou University) Abstract: The design is mainly to a sewage treatment plant in Guangzhou. The water quality discharged of the sewage treatment plant must achieve at the Degree A and the stander of Greening water quality in the “Urban sewage treatment plant pollutant discharge stander (GB 18918-2025)”. Finally, we adopt the current SBR deformation form of CASS process according to the comparison of the feasible two processing technology of CASS process and oxidation ditch process. The body of the CASS process adopts the circular Philips cans forms and the sewage is from the inner circle to be out. The selector, the anaerobic zone, and an aerobic zone is in line from the inner to outside. And the removal of nitrogen and phosphorus is by changing the CASS cellCycle. There are horizontal flow sedimentation pool, grille, pumping station in the structure of the sewage plant design. The condensed sludge need to handle in the sludge digester before sending out. At last, the form of the sewage plant layout adopts the relevant rule of the...