The sewage soil disposal experiment is made mainly by using biochemical process of looser permeable soil horizon, and secondly by leaching and adsorption.

污水土壤处理试验，主要是利用透水性较强的土壤层的生物化学作用，其次是淋滤吸附。

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In this research, the earthworms soil bed was regarded as an experiment equipment of sewage disposal.

本研究将蚯蚓——土壤床作为污水处理的一种试验装置。

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Effects of land disposal of sewage sludge on grass and soil environment were studied. The sewage sludge used was from Northern Shenyang Wastewater Treatment Plant.

以沈阳北部污水处理厂污泥为研究对象，开展了污泥土地利用对草坪草及土壤环境影响的研究。

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