农产品加工废水预处理方法研究  

Research on Pretreatment Method of Wastewater for Agricultural Products Processing

作　　者：肖中新[1] 韩厚强 

机构地区：[1]安徽省环境监测中心站,安徽合肥230071 [2]安徽南风环境工程技术有限公司,安徽合肥230001

出　　处：《农产品加工（下）》2017年第10期18-20,24,共4页Farm Products Processing

摘　　要：提出了一种针对高盐、高氨氮、高有机溶剂、高毒性农产品(香精香料、添加剂、化肥等)加工废水预处理的方法。该方法通过混凝反应沉淀、微电解反应、芬顿反应和MVR(Mechanical Vapor Recompression)蒸发等工序对废水进行预处理后,可有效减少后续废水中的细小悬浮物、低沸有机物含量,并避免MVR蒸发器在运行过程中出现泡沫的现象,从而确保MVR蒸发器正常运行。此外,可将有机氮转化为氨氮,控制氮在废水中存在的形式,将大部分氨氮以氯化铵的形式结晶出系统,从而降低了后续冷凝液生化处理时的氨氮负荷。该方法与传统处理工艺相比,不仅有效改善了出水水质,而且确保了污水处理系统运行的稳定性。This paper proposed a pretreatment method for high salt,high ammonia nitrogen,high organic solvent and highly toxic chemical sewage. Through the coagulation reaction precipitation treatment, micro-electrolysis reaction, Fenton reaction treatment,MVR(Mechanical Vapor Recompression) evaporation treatment can effectively reduce the chemical waste water in the small suspended solids,low boilin organic content,reduce the MVR evaporator in the course of the operation Foam,so as to ensure the normal operation of the MVR evaporator,while the organic nitrogen can be converted into ammonia nitrogen,nitrogen control in the form of waste water,most of the ammonia nitrogen in the form of ammonium chloride crystallization system,thereby reducing the subsequent condensate biochemical the ammonia load during processing. Compared with the conventional treatment process,the treatment result of the chemical waste water not only improves the water quality of the effluent,but also the stability of the whole system operation is also guaranteed.

关 键 词：污水预处理 农产品加工废水 混凝反应 微电解反应 芬顿反应 MVR 

分 类 号：X703.1[环境科学与工程—环境工程]