【摘要】 采用静态强制通风好氧堆肥的方法,以木屑作为对比,考察了利用污泥熟肥作为调理剂对污泥堆肥过程的影响。结果表明,与以木屑作为调理剂的污泥堆体(对照组)相比,以污泥熟肥作为调理剂的污泥堆体(实验组)升温快,高温阶段(>50℃)持续时间长达10 d,满足粪便无害化卫生标准的要求,而对照组仅持续了2 d;实验组腐熟的堆肥含水率从60%降到39%,下降了21%,pH维持在7.5～8.5范围内,微生物活性较强,而对照组含水率仅下降15%,pH始终低于7.5;实验组种子发芽指数(GI)在第14天就回升到80%以上,基本上去除了植物毒性,而对照组GI在第22天才回升到50%。总体而言,污泥熟肥能显著改善堆肥中微生物的微环境,促进有机物的降解,缩短堆肥腐熟时间,是一种优质的调理剂。更多还原

【Abstract】 The effect of sludge matured compost on sewage sludge static forced-aeration composting was studied.It showed that,compared with sawdust(matched group),the compost mixed with matured sludge compost(experimental group) warmed faster.And the high-temperature stage(>50℃) continued for 10 days,which achieved the sanitary standard for the non-hazardous treatment of night soil,while the high-temperature stage of matched group lasted for only two days.The water content of experimental group decreased from 60% to 39%,decreased by 21%,and the pH value were between 7.5 and 8.5,which promoted the activity of microbe.But the water content of matched group decreased only by 15%,and the pH value was always lower than 7.5.The germination index(GI) of experimental group increased to 80% on the 14th day,which suggested that the biological toxicity of compost was almost removed.GI of matched group was lower than 50% until the 22th day.All in all,matured sludge compost conditioner can improve the microenvironment of composting,promote the degradation of the organic matter,and accelerate the composting process.Matured sludge compost is a superior composting conditioner.更多还原