铁炭微电解预处理ABS凝聚干燥工段废水

Pretreatment of Wastewater from ABS Gelatinous Drying Section by Iron-Carbon Microelectrolysis

采用铁炭微电解系统对ABS凝聚干燥工段废水进行预处理研究,研究了不同进水pH对铁炭微电解处理效果的影响.为了研究铁炭微电解系统分解转化有毒难降解有机污染物的电化学作用,分别建立了活性炭对照试验和海绵铁对照试验.结果表明,铁炭微电解系统能高效分解转化废水中的有毒难降解有机污染物,使废水的ρ(BOD5)/ρ(CODCr)由0.32提高到0.60以上,极大地提高了废水的可生化性;不同进水pH对铁炭微电解系统处理该废水的影响相对较小;在保障铁炭微电解高处理效率的前提下,为了降低铁屑的消耗速率,提高铁炭微电解的使用寿命,降低其运行成本,最佳进水pH为4～6.

Wastewater from an ABS gelatinous drying section was pretreated by the iron-carbon micro-electrolysis system,and the effects of different influent pH on the pollution removal efficiency were studied.In order to research the electrochemical action of the iron-carbon micro-electrolysis system for the degradation and transformation of toxic refractory organic pollutants,two control experiments of activated carbon and sponge iron were set up.The results show that the iron-carbon micro-electrolysis system can decompose and transform the toxic refractory organic pollutants effectively,and increase the ρ（BOD5） /ρ（CODCr） ratio from 0.32 to above 0.60,which significantly increases the biodegradability of the ABS resin wastewater.There was little effect on the removal efficiency of micro-electrolysis by different influent pH.Under the premise of high treatment efficiency for the iron-carbon micro-electrolysis system,the best influent pH was between 4 and 6 so as to decrease the consumption rate of scrap iron,increase the life of the iron-carbon micro-electrolysis system and reduce the running cost.