摘要
实验采用厌氧接触消化技术，分别在中温（３２℃）和自然温度条件下处理淀粉厂的高浓度废水。结果表明，采用中温厌氧消化可取得较好的处理效果，原水不调ｐＨ（原水ｐＨ为４．０～４．９）直接进反应器，容积负荷最高达５．０６ｋｇＣＯＤｃｒ／ｍ３·ｄ，进水ＣＯＤｃｒ平均１１．６０４×１０３ｍｇ／ｌ，出水ＣＯＤｃｒ平均１．７７８×１０３ｍｇ／ｌ，ＣＯＤｃｒ去除率达８５．８％，出水ｐＨ提高到６．４～７．０。采用自然温度消化，当气温大于２４℃时。
In this experiment, anaerobic contact digestion technolgy is used to treat the high concentration wastewater of a starch factory at two kinds of temperatures: a moderate temperature of 32℃ and natural temperature. A good effect can be achieved by treating the sewage at the moderate temperature. The raw sewage(whose pH ranging from 4.0 to 4.9 subjected to no pH adjustment) is directly put into the reactor. At the moderate temperature the volume loading is 5.06kg COD cr /m 3·d, the COD cr value of the inflow is 11,604mg/l, the COD cr value of the outflow is 1,778mg/l, the removal efficiency of the COD cr is 85.8%, and the pH value of the outflow is raised to 6.4￣7.0. At natural temperatures , when the air temperature is higher than 24℃ the treatment effect of the sewage is good.
关键词
厌氧接触消化
淀粉废水
中温消化
废水处理
anaerobic contact digestion technology
high concentration wastewater of starch factory
digestion of moderate temperature
digestion of natural temperature
