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1·Sewage sludge means sludge arising from urban effluent treatment plant and includes pretreatment waste, scourings and unstabilised sludge.

“下水道淤泥”，是指经城市污水处理厂产生的淤渣，包括预处理的废物、污垢和性质不稳定的淤泥。

2·The tested sewage sludge is acid.

供试污泥呈酸性。

3·Effects of land utilization of sewage sludge on crops and soils.

污泥土地利用对农作物及土壤的影响研究。

4·Sewage sludge is a by-product of the wastewater-treatment system.

污泥是污水处理系统产生的副产物。

5·The company has promised to limit dumping of sewage sludge in the sea.

公司保证限制向海中倾倒污水污物。

6·Ocan dumping of sewage sludge, used by major cities such as New York, began to backfire.

主要城市如纽约向大海倾倒污水污泥，开始产生适得其反的效果。

7·Composting is an economical and effective approach to make sewage sludge stable and harmless.

堆肥化技术是使污水厂污泥达到稳定化和无害化的一种经济而有效的手段。

8·The technology of ultrasound pretreatment can extremely improve anaerobic digestion of sewage sludge.

超声预处理是促进污水污泥厌氧消化的较佳技术。

9·These microbes are now being spread round the country in river water and in sewage sludge used on farms.

这些微生物正在全国的河水和农场的污泥中蔓延。

10·Artifical improvement of soil fertility in a regraded forest ecosystem by using municipal sewage sludge.

城市污泥对退化森林生态系统土壤的人工熟化研究。