【摘要】 利用天然物质城市草炭土、草甸土、火山岩和红壤与壳聚糖絮凝剂絮凝复配处理味精废水,并对影响絮凝复配过程中味精废水浊度去除率的助剂投加量、壳聚糖用量和pH值的影响做了进一步的探讨.结果表明,壳聚糖经天然物质复配絮凝处理味精废水后的浊度去除率均优于复配前,其中草甸土和红壤最为突出.在最佳复配比例为m(草甸土):m(壳聚糖)=5∶1、pH为1.0~2.0(即在原味精废水中)时,草甸土复配后味精废水浊度去除率为45.77%;对于红壤,在最佳复配比例为m(红壤):m(壳聚糖)=25∶3、pH=6.0时,其浊度最佳去除率为78.41%.此絮凝复配方法为味精废水的处理提供了一种廉价的新方法.更多还原

【Abstract】 Wastewater from monosodium glutamate (MSG) production was tentatively treated using a new flocculant which was prepared by compounding chitose with natural materials including urban grass peat soil, meadow soil, pozzolan and red soil. And some influencing factors such as the amount of auxiliary reagents added, dosage of chitose and pH changes were discussed on the basis of the removal rates of turbidity in MSG wastewater. The results showed that the flocculation performance of the chitose-based compound flocculants was more efficacious than chitose itself. The optimum compound proportion for treating turbidity in MSG wastewater was meadow soil (g) : chitose (g) = 5∶1, the optimal pH=1.0~2.0; red soil (g) : chitose (g) = 25∶3, the optimal pH=6.0. Under the optimal conditions, the removal rate of turbidity by the two compound flocculants was much higher than that by chitose alone, up to 45.77% and 78.41%, respectively. The flocculating compound can provide with a new low-cost method for treating MSG wastewater.更多还原