干旱区生态环境知识资源中心(Arid): 喀斯特石漠化土壤中施用城市污泥的环境影响分析

Arid

	喀斯特石漠化土壤中施用城市污泥的环境影响分析
其他题名	Environmental effect analysis of municipal sewage sludge addition to Karst rocky desertification soil
	杨丹; 李冕; 冯梦芹
来源期刊	环境污染与防治
ISSN	1001-3865
出版年	2020
卷号	42 期号:1
中文摘要	城市污泥广泛用于土壤增肥,但其中的重金属、氮等污染物可能对土壤和地下水环境造成潜在影响。为探索污泥在喀斯特石漠化土壤中进行土地利用的可行性,分析了不同污泥质量分数的混配土壤重金属含量,以及熟化过程土壤淋溶液中重金属、氨氮、硝酸盐氮和亚硝酸盐氮的含量。结果表明:(1)当混配土壤中污泥质量分数低于50%时,混配土壤中重金属均不超过《土壤环境质量农用地土壤污染风险管控标准(试行)》(GB 15618-2018)的农用地污染土壤风险筛选值;但总Cd在混配土壤中污泥质量分数为50%~75%时超标7.8%~32.8%,总Zn在混配土壤中污泥质量分数为75%时超标6.8%。(2)污泥质量分数为75%、熟化30d时,淋溶液中总Cu超过《地下水质量标准》(GB/T 14848-2017)Ⅳ类标准,其他情况下各重金属均不超标;土壤熟化过程中,混配土壤淋溶液中氨氮、硝酸盐氮和亚硝酸盐氮均不超标。污泥在石漠化土壤中进行土地利用时,建议污泥质量分数低于50%,熟化30d以上。
英文摘要	Municipal sewage sludge(MSS)is widely used as soil fertilizer.However,heavy metals and nitrogen may have potential impact on soil and underground water environment.In order to investigate the feasibility of land utilization of MSS in Karst rocky desertification soil,the heavy metal contents in mixed soils with different MSS mass fraction,and the heavy metal,ammonia nitrogen,nitrate nitrogen and nitrite nitrogen contents in leachate were analyzed.Results showed that:(1)when MSS mass fraction was below 50%,heavy metal contents in mixed soils did not exceed risk screening values ofSoil environmental quality -risk control standard for soil contamination of agricultural land(GB 15618-2018).But total Cd exceeded risk screening values for 7.8%-32.8% when MSS mass fraction was 50%-75%,and total Zn exceeded risk screening values for 6.8% when MSS mass fraction was 75%.(2) Only when MSS mass fraction was 75% and aging time was 30d,total Cu in leachate exceeded the Category Ⅳ standard ofStandard for groundwater quality(GB/T 14848-2017).Heavy metals in other conditions did not exceed standard,neither of ammonia nitrogen,nitrate nitrogen and nitrite nitrogen.It was suggested that MSS mass fraction should be lower than 50%and aging time should over 30dwhen MSS was used for land utilization in Karst rocky desertification soil.
中文关键词	石漠化土壤 ; 土地利用 ; 重金属 ; 淋溶液 ; 地下水
英文关键词	rocky desertification soil land utilization heavy metals leachate groundwater
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:6652333
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353629
作者单位	杨丹, 贵阳学院生物与环境工程学院, 贵阳, 贵州 550005, 中国. 李冕, 贵阳学院生物与环境工程学院, 贵阳, 贵州 550005, 中国. 冯梦芹, 贵阳学院生物与环境工程学院, 贵阳, 贵州 550005, 中国.
推荐引用方式 GB/T 7714	杨丹,李冕,冯梦芹. 喀斯特石漠化土壤中施用城市污泥的环境影响分析[J],2020,42(1).
APA	杨丹,李冕,&冯梦芹.(2020).喀斯特石漠化土壤中施用城市污泥的环境影响分析.环境污染与防治,42(1).
MLA	杨丹,et al."喀斯特石漠化土壤中施用城市污泥的环境影响分析".环境污染与防治 42.1(2020).