污泥茶渣堆肥发酵过程酶活性变化

对污泥茶渣等物料进行堆肥发酵,结果表明:不同物料配比堆肥第3d均进入高温(75℃)降解阶段,持续时间16～18 d.污泥含量40％～50％处理的全氮、速效氮含量高于污泥含量30％的处理；处理D全氮含量最高,达19.17 g·kg-,各处理全氮平均值大小顺序为D＞E＞C＞B＞A;处理E速效氮含量最高,为1171mg·kg...

Enzyme Activity in Compost Consisting of Sludge and Tea Waste

Enzyme activities in compost containing various proportions of sludge and tea waste were compared.The results showed that the higher compost temperature was reached on the third day,and maintained for 16-18 days for all treatments.The total N in the compost containing 40%-50% of sludge was higher than when 30% sludge was used.The total N of Treatment D was 19.17 g·kg-1,which was the highest among all treatments.The order of total N content for the treatments was D>E>C>B>A.The available N of Treatment E was 1171 mg·kg-1,which was the highest among all treatments.The order of average available N for the treatments was E>D>C>B>A.The cellulase activity increased linearly as the temperature rose.On the 8th day,the cellulase activities of the Treatment A,B,C and E reached maximum values of 0.396,0.498,0.499 and 0.498 mg·g-1·d-1,respectively.Treatment E attained the highest value of 0.590 mg·g-1·d-1 on 12th day.The urease activity decreased with increasing tea waste addition.The order of the average urease activity in the treatments was C>A>D>E>B.