Effects of Two Different Fermentation Agents on Dairy Manure Composting

In order to investigate the effect of sludge and HM fermentation agent on indoor aerobic composting,four treatments were designed,using dairy manure as raw materials and wheat straw as additional inoculation dose.The results showed that,after 30 days' composting,total phosphorus content in the 4 treatments changed insignificantly.While in the control treatment,the content of available phosphorus and nitrogen had the highest increment.Compared with the control treatment,the treatment of HM fermentation agent had the highest temperature rising rate;the treatment of sludge had the highest temperature in the mega-thermal period,and got the highest reduction of humus.The loss of total nitrogen was also significant in the treatment of sludge.In the treatment amended with both of the fermentation agents,the reactor height dropped to the largest extent and the content of organic matter declined more than other treatments.In conclusion,application of two fermentation agents in the composting,with the dry weight ratio of 10(sludge)∶4(dairy manure)∶0.002 5(fermentation agents),has a striking effect on the dairy manure composting,and achieving the utilization of sludge.