全部回流 meaning in Chinese

total reflux

An integrated process of wastewater treatment and utilization is presented . the process is made up of heating the soft water of room temperature by high temperature printing and dyeing wastewater via heat exchangers , reusing the low level base decrement wastewater of water washing for dust control and desulphurizing of stack gas and anaeration - aeration biological treatment of printing and dyeing wastewater . this process has fair economical benefit on the principle of so called waste control by waste itself . this might be an ideal process for printing and dyeing wastewater treatment and disposal , the effluent of this process is quite enough to meet the requirement of urban sewer collector . additionally also many advantages are attractive such as the complete return of biological sludge to digestion , no chemicals dosage and free of secondary pollution
介绍了高温印染废水通过热交换加热常温软水、低浓度碱减量水洗废水用于烟道气除尘脱硫、厌氧-好氧处理一般印染废水等印染废水综合处理技术，该技术具有较好的经济效益，达到了以废治废的目的，生物污泥全部回流硝化，不加任何药剂，无二次污染，处理后水质达到城市截污管网标准要求，是一种较为理想的印染废水处理工艺。