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Improving sewage sludge composting by addition of spent mushroom substrate and sucrose
Bioresource Technology ( IF 11.4 ) Pub Date : 2018-01-04 , DOI: 10.1016/j.biortech.2018.01.015
Liqiang Meng , Shumei Zhang , Hainan Gong , Xiancheng Zhang , Chuandong Wu , Weiguang Li

The effects of spent mushroom substrate (SMS) and sucrose (S) amendment on emissions of nitrogenous gas (mainly NH3 and N2O) and end products quality of sewage sludge (SS) composting were evaluated. Five treatments were composted for 20 days in laboratory-scale using SS with different dosages of SMS and S, without additive amended treatment used as control. The results indicated that SMS amendments especially combination with S promoted dehydrogenase activity, CO2 production, organic matter degradation and humification in the composting, and maturity indices of composting also showed that the 30%SMS+2%S treatment could be much more appropriate to improve the composting process, such as total Kjeldahl nitrogen, nitrification index, humic acids/fulvic acids ratio and germination index, while the emissions of NH3 and N2O were reduced by 34.1% and 86.2%, respectively. These results shown that the moderate addition of SMS and S could improve the compost maturity and reduce nitrogenous gas emission.



中文翻译:

通过添加废蘑菇底物和蔗糖改善污水污泥堆肥

评估了废蘑菇底物(SMS)和蔗糖(S)修正剂对氮气排放量(主要是NH 3和N 2 O)和污水污泥(SS)堆肥最终产品质量的影响。五种处理方法在实验室范围内使用SS进行堆肥20天,使用不同剂量的SMS和S,不使用添加剂改良处理作为对照。结果表明,SMS修饰剂特别是与S组合可促进脱氢酶活性,CO 2堆肥的生产,有机物的降解和腐殖化以及堆肥的成熟度指标也表明30%SMS + 2%S处理可能更适合改善堆肥过程,例如凯氏总氮,硝化指数,腐殖酸/富里酸的比率和发芽指数,而NH 3和N 2 O的排放分别减少了34.1%和86.2%。这些结果表明适度添加SMS和S可以提高堆肥的成熟度并减少含氮气体的排放。

更新日期:2018-01-04
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