SBR法处理豆制品废水工艺条件的研究

用SBR法处理豆制品废水的试验表明,该系统具有较好的抗负荷冲击能力,进水COD在300～2000 mg/L之间变化,对系统不造成任何影响;考察了曝气时间、曝气量和污泥浓度等对去除效果的影响,试验结果表明,曝气时间和曝气量对处理效果影响很大,确定该反应系统最佳曝气时间是8 h,适宜的曝气量是800 L/h,而污泥浓度控制在4000 mg/L左右时,处理效率最高,采用进水顶出水的排水方式是可行的,确定系统的最佳排水比是3/5.厌氧段的插入可以减少剩余污泥的产量.

Experimental study on soybean wastewater treatment by SBR

The experimental research of soybean wastewater by SBR showed that reliable and stable treatment results could be achieved.The COD of effluent water was less than 100 mg/L when COD concentration of influent water was 300 to 2000 mg/L.The relationship between the removal rate and aeration time,aeration quantity has strong influence on treatment efficiency,the best aeration time was 8 h,the best aeration quantity was 800 L/h,at the same time,if the MLSS concentration was about 4000 mg/L,the removal rate will be higher.The experimental research showed that the method of draining by influent propping up effluent was feasible,the best ratio of draining was 3/5.Insertting of anoxic phase is favourable to reduce the production of residual activated sludge.