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针对城市污泥与餐厨垃圾好氧堆肥工艺,根据腐熟度评价指标的检测快捷性、堆肥后期稳定性和定量化程度,确定待选指标,然后通过对各项待选指标的相关性分析,筛选出了C/N(W)、WS-TOC和NO3--N 3个指标,最后通过与GI比较,初步确定3个指标的阈值分别为:C/N(W)下降到7~10;WS-TOC下降到4 700~5 200 mg/kg;NO3--N上升到350~420 mg/kg。
Aiming at the aerobic composting process of municipal sludge and food waste, according to the fast detection of maturity evaluation index, the stability and quantitative degree of compost late stage, the indicators to be selected are determined, and then through the correlation analysis of the indicators to be selected, Three indicators of C / N (W), WS-TOC and NO3 - N were screened out. Finally, the thresholds of three indicators were determined as follows: C / N (W) decreased to 7-10; WS-TOC dropped to 4 700-5,200 mg / kg; NO3-N increased to 350-420 mg / kg.