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Development of an evaporation crystallizer for desalination of alkaline organic wastewater before incineration 总被引:2,自引:0,他引:2
A wastewater evaporation-desalination pretreatment method was introduced to remove the Na^+ and K^+ salts in volatile organic compounds (VOCs) wastewater before it was fed into the incinerator. VOCs in the wastewater were volatilized in the evaporation system and then the vapor was combusted in an incinerator. Simulated phenol wastewater containing sodium chloride was evaporated and concentrated and sodium chloride was crystallized in different parameters. The experimental results showed that the higher initial concentration of sodium chloride increases the ratio of volatilization of VOCs, which was due to the effect of “salting out” (a decrease in the solubility of the nonelectrolyte in the solution, or more rigorously, an increase in its activity coefficient, caused by the salt addition (Furter and Cook, 1967)). When evaporation speed was increased from 1.67 ml/min to 2.73 ml/min, the total removal coefficient of sodium chloride was about 99.88%-99.99%. This pretreatment procedure eliminates the slag phenomenon caused by Na^+ and K^+ salts during wastewater incineration, so the incinerator could operate continuously, and the wastewater evaporation could increase the heat value of wastewater, and the operation cost would be reduced. 相似文献
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徐智 《内蒙古科技与经济》2004,(18):46-47
临河市位于河套灌区腹部.是国家商品粮食基地之一。全市总面积2290km^2.现有灌溉面积212万亩。依据灌区节水改造一期工程规划报告.当前主要的建设任务是:以节水为巾心的灌区的续建配套与中低产田改造。面临黄河水资源的日益短缺干旱连年不断的形势,在灌区确定的建设任务面前.排沟有无必要存在, 相似文献
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我是管鼻鹱(hù),一只相貌堂堂却"臭名昭著"的管鼻鹱。在你捂着鼻子逃跑之前,请耐心听我把话说完。如果不是"动物频道"栏目来邀请我做访谈,你们实在是很少有机会认识我,更不要说了解我了。我生活在遥远的北冰洋,那儿只有冰雪和暴风,以及一些不识 相似文献
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段玉 《中学生阅读(初中版)》2012,(1):48-49
2011年3月,我国很多地区出现了抢购食盐的闹剧。在野生动物的世界中也有类似现象,动物们也"抢盐"。在肯尼亚埃尔贡山国家森林公园中,有个基藤洞。白天这个洞安安静静的,一旦夜幕降临,就热闹非 相似文献
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垦利县,地处黄河入海口,土壤盐分较重,地下水矿化度较高,含氟量大,不宜直接开发利用,可利用灌溉水源基本为黄河水。而黄河近年来水情况呈明显减少趋势,黄河水远远不能满足该县工农业生产和生活要求,黄河水资源已经成为该地区发展的制约因素。 相似文献