含铬废水中稳定指数的改进与优化研究  

Application and optimization of stability index in wastewater containing chromium

作　　者：赵一满 王永强[1] 诸勇 吴爱军[1] 周中田 曹竹[1] Zhao Yiman;Wang Yongqiang;Zhu Yong;Wu Aijun;Zhou Zhongtian;Cao Zhu(School of Environment and Resources,Southwest University of Science and Technology,Mianyang 621010,China;National Enterprise Technology Center of Yinhe Chemical,Sichuan Province,Mianyang 621010,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]四川省银河化学国家企业技术中心,四川绵阳621010

出　　处：《工业水处理》2019年第10期45-49,共5页Industrial Water Treatment

摘　　要：含铬废水蒸发系统结垢会给设备安全、连续、低成本运行带来不利影响,因此对含铬废水蒸发系统结垢趋势进行预测十分必要。在研究较为成熟的预测油田水结垢趋势的稳定指数(SAI)模型基础上,研究了铬化工行业产生的高浓度含铬废水结垢趋势预测问题。通过分析温度、硬度、铬离子浓度等因素对含铬废水蒸发系统碳酸钙结垢量的影响,并运用Matlab中cftool工具对实验数据进行拟合,实现了对SAI模型的优化与改进。优化后的稳定指数(SAII)可以对含铬废水蒸发系统结垢趋势进行更准确地预测。The fouling of the chromium-containing wastewater evaporation system adversely affects the safety of the equipment and the continuous and low-cost operation of the equipment.Thus,it is necessary to predict the fouling tendency of the chromium-containing wastewater evaporation system.Based on the more mature stability index(SAI)model used for predicting oil-water scaling trends,the object of this paper is to study the fouling trend prediction pro-blem of the high-concentration chromium-containing wastewater produced by the chrome chemical industry.The eff-ects of temperature,hardness,and chromium ion concentration on the amount of calcium carbonate in the chromium-containing wastewater evaporation system are analyzed.Meanwhile,the cftool tool in Matlab is used to fit the ex-perimental data.Therefore,the stability index(SAI)model is optimized and improved.The optimized stability index(SAII)can more accurately predict the fouling tendency of the chromium-containing wastewater evaporation system.

关 键 词：含铬废水 低温多效蒸发 结垢趋势预测 优化稳定指数 

分 类 号：X75[环境科学与工程—环境工程] X78