Improving sewage sludge composting by addition of spent mushroom substrate and sucrose

Liqiang Meng; Shumei Zhang; Hainan Gong; Xiancheng Zhang; Chuandong Wu; Weiguang Li

doi:10.1016/j.biortech.2018.01.015

Improving sewage sludge composting by addition of spent mushroom substrate and sucrose

Bioresour Technol. 2018 Apr:253:197-203. doi: 10.1016/j.biortech.2018.01.015. Epub 2018 Jan 4.

Authors

Liqiang Meng¹, Shumei Zhang², Hainan Gong³, Xiancheng Zhang⁴, Chuandong Wu⁵, Weiguang Li⁶

Affiliations

¹ School of Environmental Engineering, Harbin Institute of Technology, 150090 Harbin, China; Institute of Microbiology, Heilongjiang Academy of Sciences, 150010 Harbin, China; Institute of Advanced Technology, Heilongjiang Academy of Sciences, 150020 Harbin, China.
² Institute of Microbiology, Heilongjiang Academy of Sciences, 150010 Harbin, China; Institute of Advanced Technology, Heilongjiang Academy of Sciences, 150020 Harbin, China.
³ Institute of Advanced Technology, Heilongjiang Academy of Sciences, 150020 Harbin, China.
⁴ Institute of Microbiology, Heilongjiang Academy of Sciences, 150010 Harbin, China.
⁵ School of Environmental Engineering, Harbin Institute of Technology, 150090 Harbin, China.
⁶ School of Environmental Engineering, Harbin Institute of Technology, 150090 Harbin, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 150090 Harbin, China. Electronic address: 18904514131@163.com.

PMID: 29348062
DOI: 10.1016/j.biortech.2018.01.015

Abstract

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.

Keywords: Composting; Nitrogenous gas; Sewage sludge; Spent mushroom substrate; Sucrose.

MeSH terms

Agaricales*
Composting*
Nitrogen
Sewage*
Soil
Sucrose

Substances

Sewage
Soil
Sucrose
Nitrogen