沸石和石灰作为添加剂对污水污泥堆肥过程中温室气体排放和成熟度演变的影响。
Influence of zeolite and lime as additives on greenhouse gas emissions and maturity evolution during sewage sludge composting.
机构信息
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Department of Biotechnology, Amicable Knowledge Solution University, Satna, India.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
出版信息
Bioresour Technol. 2016 Sep;216:172-81. doi: 10.1016/j.biortech.2016.05.065. Epub 2016 May 21.
This study aimed to evaluate the role of different amount of zeolite with low dosage of lime amendment on the greenhouse gas (GHGs) emission and maturity during the dewatered fresh sewage sludge (DFSS) composting. The evolution of CO2, CH4, NH3 and N2O and maturity indexes were monitored in five composting mixtures prepared from DFSS mixed with wheat straw, while 10%, 15% and 30% zeolite+1% lime were supplemented (dry weight basis of DFSS) into the composting mass and compared with treatment only 1% lime amended and control without any amendment. The results showed that addition of higher dosage of zeolite+1% lime drastically reduce the GHGs emissions and NH3 loss. Comparison of GHGs emissions and compost quality showed that zeolite amended treatments were superior than control and 1% lime amended treatments. Therefore, DFSS composting with 30% zeolite+1% lime as consortium of additives were found to emit very less amount of GHGs and gave the highest maturity than other treatments.
本研究旨在评估不同量沸石与低剂量石灰改良对脱水新鲜污水污泥（DFSS）堆肥过程中温室气体（GHGs）排放和成熟度的影响。在由 DFSS 与小麦秸秆混合而成的五种堆肥混合物中监测了 CO2、CH4、NH3 和 N2O 的演变以及成熟度指标，同时在堆肥质量中添加了 10%、15%和 30%的沸石+1%石灰（以 DFSS 的干重为基础），并与仅添加 1%石灰的处理和不添加任何改良剂的对照进行了比较。结果表明，添加更高剂量的沸石+1%石灰可大幅减少 GHGs 排放和 NH3 损失。GHGs 排放和堆肥质量的比较表明，沸石改良处理优于对照和 1%石灰改良处理。因此，发现添加 30%沸石+1%石灰作为添加剂的混合物的 DFSS 堆肥产生的 GHGs 量非常少，并且比其他处理的成熟度更高。
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