So using sludge and bacterial sludge can increase the microorganism number, raise microorganism activity and accelerate changeover of organic matter in the soil, thus increasing the fertility of soil.
施入底泥、菌泥均可增加土壤微生物数量，提高微生物活性，加快土壤有机成分转化，提高土壤肥力。
Quite a number of expenses were paid for chemical consumption in thickened sludge de-watering operation in municipal wastewater treatment plant.
城市污水处理厂污泥浓缩脱水的药剂消耗是主要的运行费用。
The bodies of the missing, along with an undermined number of animals, were believed to be buried under the meters-deep sludge.
失踪者遗体和未确定数量的动物有可能是被埋在数米深的淤泥中。
It was recognized that the retention percentage of total base number and the sludge amount could reflect the hydrolytic stability.
探讨了评价高碱值磺酸钙水解安定性的方法，认为总碱值保留值和淤渣量均能较好地反映水解安定性。
Activated sludge treatment system is leading water treatment methods. Activated sludge treatment system result in a large number of sludge.
当前主要的污水处理方式是活性污泥处理系统，多数活性污泥处理系统会产生大量的污泥。
Activated sludge treatment system is leading water treatment methods. Activated sludge treatment system result in a large number of sludge.
当前主要的污水处理方式是活性污泥处理系统，多数活性污泥处理系统会产生大量的污泥。
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