运用二氧化碳气体控制碱性废水pH值的技术  

Technology for Controlling pH Value of Alkaline Wastewater with Carbon Dioxide Gas

作　　者：郭召东 王星 魏震 刘艳春 宋军 GUO Zhao-dong;WANG Xing;WEI Zhen;LIU Yan-chun;SONG Jun(POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China)

机构地区：[1]中国水利水电第十四工程局有限公司,云南昆明650041

出　　处：《云南水力发电》2023年第2期6-9,共4页Yunnan Water Power

摘　　要：针对滇中引水工程松林隧洞施工期产生的施工废水pH值超标,呈现出碱性的问题,通过摸索、实践,最终提出了一种投加二氧化碳调节碱性废水pH值的方法及装置,运用二氧化碳气体中和碱性废水,使其pH值达到处理标准。二氧化碳在水中主要解离碳酸根离子,与污水中的碱性离子发生化学中和反应,其效果稳定,安全高效,二氧化碳利用率高,成本较低。The pH value of construction wastewater generated during construction of Songlin Tunnel of Yunnan Water Diversion Project exceeds the standard,showing alkalinity.This paper presents a method and device for adjusting pH value of alkaline wastewater by adding carbon dioxide through exploration and practice.By neutralizing alkaline wastewater with carbon dioxide gas,the pH value can reach the treatment standard.Carbon dioxide mainly dissolves carbonate ions in water and reacts chemically with alkaline ions in sewage.It has stable effect,high safety and efficiency,high utilization rate of carbon dioxide and low cost.

关 键 词：隧洞 施工废水 碱性 二氧化碳 调节pH值 

分 类 号：X703[环境科学与工程—环境工程]