污泥好氧堆肥预处理混合破碎机实验研究

针对污泥高温好氧堆肥技术对粒径和含水率的要求,研制开发出了污泥混合破碎机。该破碎机采用螺旋式布置弯刀,实现污泥和辅料(包括熟料和平菇渣)的混合、破碎和输送三重功能,并能连续作业。实验表明:通过调节污泥与辅料的混合比,可以满足堆肥所需的混合料粒径(20 mm)和含水率(60%左右)要求;采用V熟:V平=1∶1作辅料,破碎机污泥处理量小于7 t/h时,满足粒径和含水率要求所需的污泥/辅料体积比R为1∶(2.5~3.5);分别采用平菇渣和熟料作辅料,结果表明,与污泥混合后都可以满足堆肥要求;平菇渣起到膨松作用,需要的量相对少。

Experimental study on a sludge mixing and crushing machine used in aerobic composting

A sludge mixing and crushing machine was developed to match the requirements of particle size and moisture in aerobic composting of municipal sewage sludge.Machetes of spiral layout were used to mix,crush and transport sludge and amendments(including mushroom residues and sludge compost) successively.Experimental data showed that mixture with right particle size(less than 20 mm) and moisture(about 60%) could be got by changing the mix ratio of sludge and amendments.The volumetric mix ratio(R) of sludge and ...