五格式净粪池(FcPTR)启动特性研究

针对三格式化粪池(TcST)出水不达标的问题，构建了一种与TcST容积相等的五格式净粪池(FcPTR)，开展FcPTR与TcST处理实际生活污水的启动特性对比研究。结果表明，第13天〔水力停留时间（HRT）为80 h〕，FcPTR和TcST对COD_Cr的去除率分别降至44%和31%。第46天，通过降低HRT至36 h，FcPTR和TcST对COD_Cr的去除率分别升至86%和61%；FcPTR厌氧折流1区pH普遍大于厌氧折流2区，FcPTR厌氧区酸碱比为0.12~0.20，表明FcPTR具有较好的产酸产甲烷相分离特性。通过扫描电镜图分析FcPTR中填料挂膜和污泥生长情况，结果表明在第46天填料挂膜成功，污泥中微生物主要以短杆菌和球状菌为主。FcPTR相对于TcST具有较好的处理效果，COD_Cr出水达到GB 18918—2002《城镇污水处理厂污染物排放标准》一级A标准。

Study on the start-up characteristics of five-compartment purification tank reactor (FcPTR)

A five-compartment purification tank reactor (FcPTR) with the same volume as three-compartment septic tank (TcST) was constructed to address the problem of substandard effluent from TcST, and a study of the start-up characteristics of FcPTR and TcST for treating actual domestic wastewater was conducted. The results showed that the removal rates of FcPTR and TcST of CODCr decreased to 44% and 31%, respectively, on the 13th day (HRT is 80 h). On the 46th day (HRT is 36 h), the removal rates of FcPTR and TcST of CODCr increased to 86% and 61%, respectively, by reducing HRT. On the 46th day, pH of FcPTR anaerobic fold 1 zone was generally larger than that of anaerobic fold 2 zone, and the acid to basic ratio of FcPTR anaerobic zone was 0.12-0.20, which had better acidification and methanation separation characteristics. On the 46th day, the filler and sludge in FcPTR were observed by sweeping electron microscopy, the morphology of biofilm on the fillers was successful, and the microorganisms in the sludge were mainly short bacilli and spherical bacteria. Research shows FcPTR had a better treatment effect than TcST, and CODCr effluent reached the Class Ⅰ A of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002).