矿化垃圾和绿色植物废弃物对盐碱土的改良效果  

The improvement effect of aged-refuse and green-plant-waste on saline-alkali soil

作　　者：董阳[1] 方海兰[2] 梁晶[2] 郝冠军[2] 郝瑞军[2] 吕子文[2] 

机构地区：[1]南京农业大学资源与环境科学学院,江苏南京210095 [2]上海市园林科学研究所,上海200232

出　　处：《环境污染与防治》2009年第10期36-42,共7页Environmental Pollution & Control

基　　金：上海市建设委员会专项(No.ZX050205)

摘　　要：利用矿化垃圾和绿色植物废弃物在上海临港新城进行盐碱土现场改良试验,并监测不同处理土壤溶液中重金属元素浓度。结果表明:(1)在盐碱土中分别加入矿化垃圾、绿色植物废弃物或2者混合加入能明显降低盐碱土的盐分,提高土壤的肥力,达到改良盐碱土的目的。(2)各处理土壤溶液中重金属变化趋势基本一致:Cu浓度低于《地下水质量标准》(GB/T14848—93)中Ⅲ类标准,Cr浓度均在GB/T14848—93中Ⅳ类标准内,不存在Cu和Cr污染可能;个别点土壤溶液中偶尔出现Zn和Pb浓度超过GB/T14848—93中Ⅴ类标准,大部分基本在GB/T14848—93中Ⅳ类标准内;Cd、Fe和Mn浓度相对较高,是造成地下水潜在污染的原因,要注意合理控制。(3)不同处理会影响矿化垃圾中重金属的溢出,会使一部分重金属向下迁移,但总体对地下水质影响不大,且100cm处各种重金属元素的平均浓度均没有超过GB/T14848—93中Ⅳ类标准。(4)矿化垃圾中加入绿色植物废弃物处理的污染综合指数较小,主要是由于绿色植物废弃物重金属元素浓度相对较低、有机质含量高,和矿化垃圾混合使用能降低矿化垃圾潜在污染的风险。The aged-refuse and green-plant-waste was used to improve saline-alkali soil in Lingang new urban in Shanghai,and the contents of heavy metal in leaching solution of different treated soil were also analyzed. The results showed that the composition of aged-refuse and green-plant-waste could reduce the salt contents,improve soil fertility which can meliorate the saline-alkali soil. The concentration of heavy mental such as Cu,Zn,Fe,Mn,Cr,Cd and Pb in leaching solution of treated soil was investigated, and the variation trends of heavy mental were similar in different treatments. Except for Fe and Mn, the Zn,Cd,Cu, Cr and Pb had low chance to pollute the groundwater. Different treatments would affect the leaching of heavy mental from aged-refuse. Some amount of heavy mental would transfer to the ground but it wouldn＇t have any effect on the groundwater quality on the whole. The average contents of heavy mental in 100 cm level hadn＇t exceed the fourth standard for water quality. With the help of green-plant-waste, which contained low heavy mental and high organic matter,the potential pollution of heavy mental in aged-refuse was reduced.

关 键 词：矿化垃圾 绿色植物废弃物 盐碱土 重金属 

分 类 号：X705[环境科学与工程—环境工程]