Pollutant identification of water and soil of uncontrolled landfills in Shenzhen
ZHOU Rui, WU Ling, BU Si, LI Ting-ting, LIU Fang-yuan, REN He-jun
National Joint Engineering Laboratory for Petrochemical Pollution Site Control and Restoration Technology, Key Laboratory of Groundwater Resource and Environment of Ministry of Education, Jilin University, Changchun 130021, China
Abstract：Based on on-site investigations, personnel interviews and data collections, characteristic pollutants of 24 uncontrolled landfills in Shenzhen were identified, of which the soil and groundwater quality was evaluated by Nemerow index method. The assessment results of soil and groundwater environmental quality showed that:5 pollutants exceeded the standard in soil, including 2moderate pollutants of cadmium and arsenic, of which pollution indexes were 2.970 and 2.141 respectively, and 3 light pollutants of vanadium, nickel and lead, of which pollution indexes were between 1.348 and 1.777; and 22 pollutants exceeded the standard in groundwater, including 13 heavy pollutants of coliform, ammonia nitrogen, manganese, iron, lead, aluminum, permanganate index, thallium, total dissolved solids, iodide, nickel, sulfate and beryllium, of which pollution indexes were between 3.860 and 832.581, 6 moderate pollutants of arsenic, total hardness, nitrate, fluoride, chloride and selenium, of which pollution indexes were between 2.039 and 2.993, and 3 light pollutants of antimony, sodium and mercury, of which pollution indexes were between 1.804 and 1.147. Groundwater pollution was far more serious than soil pollution. The characteristic pollutants of the uncontrolled landfills in soil were 6pollutants of fluoride, arsenic, nickel, lead, vanadium and cadmium, and those in groundwater were 16 pollutants of total hardness, total dissolved solids, sulfate, chloride, and fluoride, nitrate, ammonia nitrogen, iron, manganese, arsenic, lead, nickel, aluminum, thallium, permanganate index and total coliform. 5 pollutants of fluoride, lead, nickel, thallium and aluminum showed typical regional characteristics. The results of this study can provide data support for the encironment quality management of the uncontrolled landfills in Shenzhen.
周睿, 吴玲, 簿丝, 李婷婷, 刘方圆, 任何军. 深圳简易垃圾填埋场水土环境污染指标识别[J]. 中国环境科学, 2022, 42(3): 1287-1294.
ZHOU Rui, WU Ling, BU Si, LI Ting-ting, LIU Fang-yuan, REN He-jun. Pollutant identification of water and soil of uncontrolled landfills in Shenzhen. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(3): 1287-1294.
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