生物质炭与沸石强化剩余污泥堆肥处理

摘要

We used biochar and/or zeolite alone for surplus sludge composting.The results show that the mixed application of biochar(dosage of 8%)and zeolite(dosage of 10%)has a synergetic effect and increases the composting efficiency compared with the control and the treatments of biochar or zeolite alone.The addition of biochar and zeolite can increase the pile temperature and reduce the nitrogen loss by transforming ammonium in-to nitrite.Moreover,the addition of biochar and zeolite can enhance heavy metal passivation and promote the composting process.%将生物质炭与沸石联合或单独用于剩余污泥堆肥处理.结果表明,与对照样和只添加了生物质炭或沸石的处理相比,生物质炭(用量8%)和沸石(用量10%)的混合施用产生协同作用,提高了堆肥效率.生物质炭和沸石的添加提高了堆温,促进氨转化为硝酸盐,从而减少氮素损失.此外,生物质炭和沸石的加入可以提高重金属的钝化效果和促进堆肥进程.