摘要
随着垃圾填埋场开挖筛分分质利用工程的陆续开展,筛分出的腐殖土妥善处置成了亟待解决的问题。通过超声淋洗不同粒径的锑污染垃圾腐殖土,研究了柠檬酸、乙二胺四乙酸二钠(EDTA)及两者复合淋洗剂的淋洗效果,并通过小麦种子萌发实验探究锑污染垃圾腐殖土资源化用作绿化用土的潜力。研究发现,柠檬酸和EDTA复合超声淋洗既可有效提升腐殖土中锑的去除效果,能缩短处理时间,能消除粒径的影响,而且还可以减少营养物质流失。小麦种子萌发实验表明,柠檬酸和EDTA复合超声淋洗后的腐殖土具有资源化用作绿化用土的潜力,适当地可以根据不同营养元素损失率进行氮肥、磷肥和钾肥掺拌。
The proper disposal of screened humus soil has become an urgent problem as landfill excavation,screening and fractional utilization projects carried out.Ultrasonic drenching on antimony-contaminated waste humus soil with different particle diameters was used to study drenching effects of citric acid,EDTA and their combination.Wheat seed germination test was used to study whether antimony-contaminated waste humus soil could be used as green soil.It was found that combination drenching of citric acid and EDTA with ultrasound could effectively enhance the removal effect of antimony from humus soil,and reduce treatment time and the effect of particle diameter.Moreover,the loss of nutrients could be reduced,too.Wheat seed germination test showed that combination drenching of citric acid and EDTA with ultrasound had the potential to be used as green soil.If necessary,nitrogen fertilizer,phosphorus fertilizer and potassium fertilizer could be added according to the loss of different nutrients.
作者
张海静
江文琛
刘超然
王磊
黄晟
ZHANG Haijing;JIANG Wenchen;LIU Chaoran;WANG Lei;HUANG Sheng(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Shanghai 200092)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2024年第5期666-670,共5页
Environmental Pollution & Control
基金
上海市政总院启明星项目(No.K2021K110)。
关键词
腐殖土
重金属
锑
淋洗
资源化
绿化用土
humus soil
heavy metals
antimony
drenching
reutilization
green soil
