配施城市污泥改良沙化土壤研究初探

The Initially Search of Soil Ecosystem of Amended with Sewage Sludge

城市污水处理厂污泥的土地利用是其资源化利用的主要途径,配施城市污泥改良沙化土壤则是污泥土地利用的方式之一.沙化土壤的特点是土力贫瘠,有机质、养分等缺乏,污泥施入后可提高其保水、持水性,特别是增加土壤中的有机质含量,可使植物获得良好的生长响应.在污泥土地利用国内外研究现状基础上,重点阐述污泥改良沙化土壤的可行性及实施方案.污泥用于沙化土壤的生态改良与修复将同时解决城市污水处理厂污泥的处理处置和土地沙漠化这两个广受关注的环境问题,具有一定的经济、社会、环境效益.

Sewage sludge land application is a primary approach to achieve sludge resource reuse,and desert reme- diation is one of the recycling of the sludge disposal. The characteristics of sandy and degraded soil is barren,or- ganic matter and nutrient deficiency, throwing sludge into sand）, soil can improve the nutrient content,especially in the soil organic matter content,which can benefit the plant and get good growth response. On the basis of sludge land use research status at domestic and overseas,emphases on the feasibility and the technical route of repairing sandy and degraded soil by sludge.There is a large amount of areas in China is part of typical arid and semiarid,the situation is hard to say optimism.The method above mentioned can solve together two well-publicized environ- ments, which have a certain economic,social and environmental benefits.