工业废水包括生产废水、生产污水及冷却水 |
添加时间:2020/11/18 16:12:11 浏览次数: |
工业废水包括生产废水、生产污水及冷却水,是指工业生产过程中产生的废水和废液,其中含有随水流失的工业生产用料、中间产物、副产品以及生产过程中产生的污染物。工业废水种类繁多,成分复杂。 Industrial wastewater includes production wastewater, production sewage and cooling water. It refers to the waste water and waste liquid produced in the process of industrial production, which contains industrial production materials, intermediate products, by-products and pollutants produced in the production process. There are many kinds of industrial wastewater with complex components. 1.多效蒸发结晶技术 1. Multi effect evaporation crystallization technology 在工业含盐废水的处理过程中,工业含盐废水进入低温多效浓缩结晶装置,经过3—6效蒸发冷凝的浓缩结晶过程,分离为淡化水(淡化水可能含有微量低沸点有机物)和浓缩晶浆废液;无机盐和部分有机物可结晶分离出来,焚烧处理为无机盐废渣;不能结晶的有机物浓缩废液可采用滚筒蒸发器,形成固态废渣,焚烧处理;淡化水可返回生产系统替代软化水加以利用。 In the treatment process of industrial salt containing wastewater, the industrial salt containing wastewater enters the low temperature multi effect concentration crystallization device, and is separated into desalination water (desalination water may contain a small amount of low boiling point organic matter) and concentrated crystal slurry waste liquid after 3-6 effect evaporation and condensation; inorganic salt and some organic matter can be crystallized and separated and incinerated into inorganic salt waste residue; the organic matter that can not be crystallized is concentrated The waste water can be recycled to the production system instead of softened water. 低温多效蒸发浓缩结晶系统不仅可以应用于化工生产的浓缩过程和结晶过程,还可以应用于工业含盐废水的蒸发浓缩结晶处理过程中。 Low temperature multi effect evaporation and crystallization system can not only be used in the concentration process and crystallization process of chemical production, but also can be used in the evaporation concentration and crystallization process of industrial salt containing wastewater. 多效蒸发流程只在第一效使用了蒸汽,故节约了蒸汽的需要量,有效地利用了二次蒸汽中的热量,降低了生产成本,提高了经济效益。 In the multi effect evaporation process, only steam is used in the first effect, so the steam demand is saved, the heat in the secondary steam is effectively utilized, the production cost is reduced and the economic benefit is improved. |
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