炭泥生物再生系统循环吸附降解有机物研究

Circle Adsorption and Bio-degradation of Organic Matter by Carbon-Sludge Biological Regeneration System

炭泥生物再生系统包括生物再生池、吸附池、混凝池和沉淀池。将沉淀池中吸附高浓度有机物的活性炭、泥渣回流到生物再生池中进行生物降解与炭泥生物活化,活化后的炭泥再次参与原水的吸附处理和强化混凝处理。考察了温度、有机物等因素对系统处理效果的影响,探究了炭泥系统循环吸附降解技术(CSCAB)的特性。结果表明,该系统吸附池对原水中COD、UV_(254)、氨氮与藻类总数的平均去除率分别为21.27%、15.69%、15.23%、17.10%;炭泥强化混凝对原水中COD、UV_(254)、氨氮、藻类总数及浊度的平均去除率分别为32.72%、28.36%、43.40%、23.04%、56.11%;生物再生池对沉淀池排泥水中COD、UV_(254)、氨氮的平均去除率分别为53.09%、33.74%、28.66%,对绿藻、蓝藻、硅藻、隐藻的平均去除率分别为32.19%、51.89%、50.94%、38.89%。

Carbon- sludge biological regeneration system contains a biological regeneration tank, an adsorption tank, a coagulation tank and a sedimentation tank. Activated carbon and sludge that ad- sorbed high concentration organic matters in the sedimentation tank were returned to the biological regen- eration tank for bio-degradation and biological activation, and activated carbon -sludge was once again involved in the adsorption of raw water and enhanced coagulation treatment. The treatment efficiency and the effects of temperature and organic matter concentration on the system were investigated. The results showed that the average removal rates of COD, UV_254, ammonia nitrogen and total algae by adsorption tank were 21.27%, 15.69%, 15.23% and 17.10%, respectively. The average removal rates of COD, UV_254, ammonia nitrogen, total algae and turbidity by enhanced carbon -sludge coagulation were 32.72% , 28.36% , 43.40% , 23.04% and 56.11% , respectively. The average removal rates of COD, UV_254 and ammonia nitrogen in sedimentation tank effluent by the biological regeneration tank were 53.09% , 33.74% and 28.66% , respectively, and the average removal rates of Chlorophyta, Cyanobac- teria, diatoms and Cryptophyta by biological regeneration tank were 32.19% , 51.89% , 50.94% and 38. 89% , respectively.