pollution control work meaning in Chinese

污染管制工作

Photo of the epd will continue to monitor river water quality and provide scientific data for future planning and pollution control work photograph taken in the shing mun river
环保署继续监测河溪水质为规划及污染管制提供可靠有力的依据照片摄于城门河图片
Projects on environmental control such as air and water pollution control works , noise mitigation measures , waste water treatment and disposal measures , and asbestos abatement works ( hk $ 137 million )
控制环境污染之工程，例如：空气及海水污染控制工程，噪音缓解工程，污水处理及排放工程和清除石棉工程等（合共港币一亿三千七百万元）