高盐、高浓度有机废水蒸发特性实验

 搭建废水动态蒸发实验装置，对精细化工行业常见的蒸氨废水、颜料生产废水开展蒸发分离实验研究以获得废水蒸发特性，为实际蒸发系统设计提供基础数据支持。结果表明：废水的沸点升高随浓缩倍数的增加而逐渐上升，来自不同工艺段的蒸氨废水、颜料生产废水由于浓度差别，在相同的浓缩倍数下沸点升高略有不同；在蒸发过程中，颜料生产废水蒸发冷凝液的COD随着蒸发的进行逐渐降低；不同种类废水蒸发冷凝液的TDS与pH值变化规律大致相同，受原液中易挥发物质及夹带液滴的影响较大，随着浓缩倍数的增加先减小后趋于恒定。

Experimental research on characteristics in evaporation process of organic industrial wastewater with high salinity and concentration

A set of devices for wastewater evaporation have been built and a series of researches on evaporation of distilled ammonia wastewater and pigment production wastewater have been carried out to obtain the characteristics of the evaporation process so as to provide basic data for evaporation system design. The results show that the boiling point elevation of the wastewater increases gradually with the rise of concentration multiple, and that the boiling points of distilled ammonia wastewater and pigment production wastewater from different process stages are slightly different under the same concentration multiple. The COD in the condensate water of pigment production wastewater gradually decreases in the evaporation process. Change rules of TDS and pH in the condensate water of different kinds of wastewater are roughly the same, i.e., to decrease firstly then tend to be constant, mainly being dependent upon the volatile substances and droplet inclusion in the wastewater.