二氧化碳软化高硬度废水的研究  

Study on CO_2 Softening Wastewater with High Hardness

作　　者：符磊[1] 满瑞林[1] 扶强 姚银朋 FU Lei;MAN Ruilin;FU Qiang;YAO Yinpeng(School of Chemistry and Chemical Engineering,Central South University Changsha 410083)

机构地区：[1]中南大学化学化工学院,长沙410083

出　　处：《工业安全与环保》2018年第5期35-38,共4页Industrial Safety and Environmental Protection

基　　金：国家科技重大专项-典型重金属污染防治技术评估研究及示范课题子课题-涉砷典型行业污染综合防治技术评估与示范(2013ZX 7504-001-04-02)

摘　　要：采用一种新装置——自吸式反应器强化CO_2软化高钙废水过程,探究了温度、起始pH值、CO_2气体流量、CO_2总通入量等因素对钙离子去除率的影响。结果显示,在起始pH值为12.89、温度20℃、通入的CO_2体积分数为100%、CO_2气体流量为1.0 L/min时,钙离子去除率最高达98.47%。与传统的鼓泡搅拌反应器相比,CO_2利用率提高了2倍以上。This paper used a new device,a self-priming gas-liquid reactor which could enhanced the process of CO2 softening calcium wastewater,to explore the effects of temperature,initial pH value,CO2 gas flow,CO2 total flux and other factors on the removal rate of calcium. The results showed that the removal rate of calcium ion was up to 98. 47% under the best technological conditions（initial pH value 12. 89,gas flow rate 1. 0 L/min,CO2 concentration 100%,the temperature 20 ℃）. Meanwhile,the utilization ratio of CO2 with self-priming gas-liquid reactor was more than 2 times with traditional bubbling stirring reactor.

关 键 词：自吸式反应器 高钙废水 CO2软化 

分 类 号：X758[环境科学与工程—环境工程]