Fruit and vegetable wastewater treated in the process of UASB, biocontact oxidation and coagulation. Abstract:Basing on the characteristics of fruit and vegetable dewatered wastewater, the process of UASB, biocontact oxidation and ulation is adopted. By introducing the sludge cultivation and adjustment in missioning, and analyzing the problems during operation, factors which may affect missioning are raised, as well as the related control measure. Practice shows that effluent wastewater treated by UASB/ biocontact oxidation/ulation process has been up to the Ⅱ grade of Integrated Wastewater Discharge Standard of The People’s Republic of China(GB8978—1996). Keywords:Fruit dewatered wastewater、Vegetable dewatered wastewater、 UASB、Biocontact oxidation、Coagulation、 一、概述 某食品公司主要从事温带水果脱水和蔬菜脱水加工,两种产品的主要工艺流程为:水果加工:原料→去皮、清洗→蒸煮→糖浸→干燥 蔬菜加工:原料→清洗→挑选→切割→药剂处理→干燥 废水主要来源于清洗、蒸煮、糖浸等生产工序,以及地面和设备的冲刷、清洗用水。 二、水质、水量 设计水量:300m3/d,设计水质见表1。 表1 设计进出水水质 The quality of influent and effluent of device 序号 名称 CODcr (mg/l) BOD5 (mg/l) SS (mg/l) pH
