氨氮是一种新进入水体的污染物,其超标率最大,严重污染环境。对低C/N比氨氮废水,传统生物技术需额外投加有机物作为电子供体进行脱氮,导致出水残留有机物。新研制的三维电极-生物膜反应器将电化学技术与生物膜技术相结合,将生物膜负载...氨氮是一种新进入水体的污染物,其超标率最大,严重污染环境。对低C/N比氨氮废水,传统生物技术需额外投加有机物作为电子供体进行脱氮,导致出水残留有机物。新研制的三维电极-生物膜反应器将电化学技术与生物膜技术相结合,将生物膜负载在三维电极体系表面,利用电化学作用产生的氢气和二氧化碳为微生物脱氮提供电子供体和碳源。长期稳定运行表明,新研制的三维电极-生物膜反应器中氨氮的转化率为95.8%,TN去除率为82%,出水基本无亚硝氮积累,每去除1 kg TN所需能耗小于5.9 kW·h。实验结果表明,该装置在脱氮过程中无需额外投加有机物和碳源,废水处理效率高、能耗低。展开更多
This article reported the preparation of macro porous resin by heating polyproplyene and improving its property.The result showed that macro porous resin with good quality and big soil adsorption rate can be prepared ...This article reported the preparation of macro porous resin by heating polyproplyene and improving its property.The result showed that macro porous resin with good quality and big soil adsorption rate can be prepared when the ration of polyproplyene to soybean salad oil is 1∶2,the highest heating temperature is 250℃,time of homothermal agitation is 20min and the rate of cooling is 2℃/min.The resin can effectively adsorb waste grease in restaurant wastewater.After removing grease,wastewater is treated with cogulant deposition.COD cr descend to 83mg/l from 790mg/l,which can reach the national discharge standards.展开更多
文摘氨氮是一种新进入水体的污染物,其超标率最大,严重污染环境。对低C/N比氨氮废水,传统生物技术需额外投加有机物作为电子供体进行脱氮,导致出水残留有机物。新研制的三维电极-生物膜反应器将电化学技术与生物膜技术相结合,将生物膜负载在三维电极体系表面,利用电化学作用产生的氢气和二氧化碳为微生物脱氮提供电子供体和碳源。长期稳定运行表明,新研制的三维电极-生物膜反应器中氨氮的转化率为95.8%,TN去除率为82%,出水基本无亚硝氮积累,每去除1 kg TN所需能耗小于5.9 kW·h。实验结果表明,该装置在脱氮过程中无需额外投加有机物和碳源,废水处理效率高、能耗低。
文摘This article reported the preparation of macro porous resin by heating polyproplyene and improving its property.The result showed that macro porous resin with good quality and big soil adsorption rate can be prepared when the ration of polyproplyene to soybean salad oil is 1∶2,the highest heating temperature is 250℃,time of homothermal agitation is 20min and the rate of cooling is 2℃/min.The resin can effectively adsorb waste grease in restaurant wastewater.After removing grease,wastewater is treated with cogulant deposition.COD cr descend to 83mg/l from 790mg/l,which can reach the national discharge standards.