污水处理厂污泥制备生物炭及应用的研究进展OA北大核心CSCDCSTPCD

The technique of biochar preparation from sewage sludge is one of the most important ways for sludge recycling.Its advantages include low cost,simple method,and so on.In order to promote the development and application of the technique, this essay briefly summarized the present research statue from three aspects:preparation methods, influence factors and application fields.The merits and demerits of different preparation methods were discussed.The effects of different factors on yield,specific surface area,pore size and distribution of sludge biocar were discussed in detail.The application of sludge biochar in the fields of environment and agriculture are summarized.The existing problems of sludge biochar, such as low yield, precipitation of heavy metals and difference of production batches,were pointed out.At last,the future developments of sludge biochar were predicted.