This study was aimed to examine the response of Ca-bentonite (CB) amendment to improve the sewage sludge (SS) composting along with wheat straw (WS) as bulking agent. Five treatments (SS+WS) were mixed with or without blending of discrepant concentration of CB (2%, 4%, 6%, and 10%), respectively, and without CB added treatment applied as the control. The results showed that compared to control and 2%CB blended treatments, while the 6 to 10%CB -amended treatment indicated maximum enzymatic activities with the composting progress and highest organic matter degradation and loss. The amendment of 6 to 10%CB increased the humic acid, HA/FA ratio, DON, NH₄⁺-N, NO₃ and DOC but reduced the fulvic acids content and the maturity period by 2 weeks as compared to control. In addition, maturity parameters also confirmed that the highest seed germination was observed with the 10%CB applied compost followed by 6%CB, 4%CB and 2%CB applied treatments, respectively.

这项研究的目的是研究钙膨润土（CB）改良剂与小麦秸秆（WS）作为填充剂一起改善污水污泥（SS）堆肥的反应。将五个处理（SS + WS）分别混合或不混合不同浓度的CB（2％，4％，6％和10％），并且不添加CB的处理作为对照。结果表明，与对照和2％CB混合处理相比，经6％至10％CB改良的处理显示出最大的酶促活性，伴随着堆肥的进行，有机物的降解和损失也最高。将CB修正为10％至10％可增加腐殖酸，HA / FA比，DON，NH ₄ ⁺ -N，NO ₃和DOC，但与对照组相比，黄腐酸含量和成熟期降低了2周。此外，成熟度参数还证实了在施用10％CB的堆肥之后，分别以6％CB，4％CB和2％CB的处理，观察到了最高的种子发芽率。