厌氧+人工湿地处理农村生活污水研究

摘要

[Objective] The research aimed to study on capacity of sewage treatment with anaerobic + artificial wetland.[Method] By studing on the removal of conventional pollutants such as COD_(Cr), SP, TP and NH_4~+-N with new wetlands to analysis their impact on the capacity of sewage treatment.[Result]The COD_(Cr) removal efficiency could reach 70%-80% and the value of COD_(Cr) could be reduced from above 300.00 mg/L to blow 100 mg/L, the removal efficiency of SP and NH_4~+-N were 30%-40% when hydraulic load is 90 cm/d. [Conclusion] When the concentration of COD_(Cr), SP and NH_4~+-N were below 300.00,2.50 and 15.00 mg/L, it's easy to achieve a more stable removal efficiency.%[目的] 研究厌氧+人工湿地对高负荷污水处理的能力.[方法] 通过新式湿地对COD_(Cr)、SP、TP和NH_4~+-N等常规污染物的去除,研究其对污水处理的能力.[结果] 采用90 cm/d 水力负荷运行时,COD_(Cr)去除率可达70%～80%,可将300.00 mg/L以上的COD_(Cr)降低至100.00 mg/L以下,对SP和NH_4~+-N的去除率在30%～40%.[结论] 人工湿地的COD_(Cr)、SP及NH_4~+-N浓度为300.00、2.50、15.00 mg/L以下时,能达到较稳定去除效率.