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针对重庆某高有机物水源水,采用新型含炭沉淀池污泥回流工艺进行了中试研究,分析了进出水有机物特性和含炭沉淀池污泥生物特征,并与混凝/沉淀工艺进行了对比。结果表明,混凝/沉淀工艺对COD_(Mn)和UV_(254)的去除率分别为18.67%~23.24%和24.49%~31.25%,含炭沉淀池污泥回流工艺比混凝/沉淀工艺大幅提高了对COD_(Mn)和UV_(254)的去除效果,其去除率分别为35.58%~41.88%和38.78%~48.32%。含炭沉淀池污泥培养7~8 d后完成了生物富集,生物量达到100 nmol P/m L左右。由于炭泥中含有大量微生物,含炭沉淀池污泥回流工艺对亲水性、小分子质量有机物组分的去除效果更好。
Aiming at a high organic source water in Chongqing, a pilot-scale study was conducted on the sludge reflow process of a new type of sediment-containing sedimentation tank. The characteristics of organic substances in and out of the water and biological characteristics of the sludge in the sedimentation tank were analyzed and compared with the coagulation / sedimentation process . The results showed that the removal rates of COD_ (Mn) and UV_ (254) in the coagulation / sedimentation process were 18.67% ~ 23.24% and 24.49% ~ 31.25%, respectively. The removal efficiencies of COD_ (Mn) and UV_ (254) increased by 35.58% ~ 41.88% and 38.78% ~ 48.32%, respectively. Bioaccumulation was achieved after 7-8 days of culture in sludge containing charcoal and the biomass reached 100 nmol P / m L. Due to the large amount of microorganisms contained in the carbonaceous mud, the sludge recycle process with carbonaceous sedimentation tanks is more effective in removing hydrophilic and small molecular weight organic components.