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研究了直接超滤、粉末炭/超滤、混凝/超滤三种工艺的除污特性和相应的氯消毒效能。结果表明:三种超滤工艺的除浊率均能达到99%以上,但直接超滤工艺对溶解性有机物、氨氮、氯消毒副产物前体物的去除效果较差,粉末炭/超滤和混凝/超滤工艺集合了超滤和预处理工艺的优点,除污效能得到强化。由于微生物个体生长和挤压变形,超滤膜后仍有少量菌落检出,加氯1.0 mg/L后,三种超滤工艺的出水水质在48 h内均优于国标要求;粉末炭/超滤、混凝/超滤组合工艺均能降低氯消毒副产物生成势,且对HAAFP的去除效果较THMFP的好。
The decontamination characteristics of the three processes of direct ultrafiltration, powder carbon / ultrafiltration, coagulation / ultrafiltration and the corresponding chlorine disinfection efficiency were studied. The results showed that the turbidity removal rate of the three kinds of ultrafiltration processes can reach more than 99%, but the direct ultrafiltration technology has a poor removal effect on the dissolved organic matter, ammonia nitrogen and chlorine disinfection by-products precursors, powder carbon / ultrafiltration and The coagulation / ultrafiltration process combines the advantages of ultrafiltration and pretreatment processes with enhanced decontamination performance. Due to the growth and extrusion deformation of microorganisms, a small amount of colonies were still detected after ultrafiltration. After 1.0 mg / L chlorine was added, the effluent quality of the three ultrafiltration processes was better than the national standard within 48 h. Powder carbon / super The combination of filtration and coagulation / ultrafiltration can reduce the generation potential of chlorine disinfection by-products, and the removal efficiency of HAAFP is better than that of THMFP.