污泥生物炭作为土壤改良剂的研究进展与展望

用污水污泥生产生物炭并应用于土壤改良,是一种经济有效的土壤修复方法,具有提高土壤肥力、固定重金属、增加土壤生物量等效果。为了深入评估污水污泥基生物炭在土壤应用中的可行性,论述了污泥生物炭的制备方法与性质,探讨了污泥生物炭施入土壤后对土壤理化性质、重金属污染及有机物污染等方面的作用,分析了污泥生物炭作为土壤改良剂的可行性和潜在的危险,并对污泥生物炭研究与应用的方向进行了展望,对促进污泥资源化利用和土壤修复具有现实意义。

Producing biochar from sewage sludge and applying it to soil improvement is an economic and effective soil remediation method,which has the effects of improving soil fertility,immobilizing heavy metals,increasing soil biomass,etc.In order to deeply evaluate the feasibility of sewage sludge based biochar in soil application,this paper discusses the preparation methods and properties of sludge biochar,discusses the effects of sludge biochar on soil physical and chemical properties,heavy metal pollution and organic pollution after it is applied to soil,and analyzes the feasibility and potential dangers of sludge biochar as a soil conditioner,and then looks forward to the research and application direction of sludge biochar,it has an important practical significance for promoting sludge resource utilization and soil remediation.