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[Composting process of municipal solid waste with high effective complex microbial community].
1Department of Environmental Engineering, Tsinghua University, Beijing 100084, China. xibeidou@263.net
Huan Jing Ke Xue= Huanjing Kexue
|January 5, 2002
Summary
High effective complex microbial community (HECMC) accelerates municipal solid waste (MSW) and sludge composting. Adding 5% HEMC significantly reduced maturation time, indicating its efficacy in organic matter decomposition and humus formation.
Area of Science:
- Environmental Microbiology
- Waste Management Science
- Soil Science
Context:
- Municipal solid waste (MSW) and sewage sludge present significant disposal challenges.
- Composting is a viable method for treating organic waste, converting it into valuable soil amendments.
- Optimizing composting efficiency requires understanding microbial community dynamics.
Purpose:
- To investigate the impact of high effective complex microbial community (HECMC) on the combined composting of MSW and sludge.
- To determine the optimal dosage of HEMC for accelerating the composting process.
- To evaluate the effects of HEMC on key composting parameters like temperature, organic matter, and C/N ratio.
Summary:
- Composting experiments were conducted using MSW and sludge with varying percentages of HEMC (2%, 3%, 5%) and a control (3% inactive HEMC).
- Key parameters monitored included biomass, temperature, organic matter content, and the carbon-to-nitrogen (C/N) ratio.
- The addition of HEMC significantly reduced the maturation time, with the 5% HEMC treatment achieving maturity in 12 days compared to 30 days for the control.
Impact:
- HECMC effectively decomposes organic matter and accelerates the conversion of waste into humus.
- The study demonstrates the potential of HEMC as a bio-augmentation agent to enhance composting efficiency.
- The resulting compost contains active bacteria beneficial for soil health, offering a sustainable waste management solution.