Study on the remediation of antimony-contaminated waste humus soil by drenching and its reutilization as green soil
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.
万方数据
维普
