城市污水处理厂污泥利用探讨

Discussion on Sludge Utilization in City Sewage Plant

采用在污水污泥中按不同比例掺入生活垃圾或黄土与砂,进行高温堆制,开发出含多种微量元素的高效有机/无机复合肥和多微有机营养土,并施用于农作物和花卉。结果表明施用后农作物产量增加,花卉植物的株高、花蕾数、根长、根重明显高于对照组。该课题的研究不仅可获得廉价的微量元素复合肥料,而且消除了污水污泥对环境的污染,可创造一定的社会经济效益。

Nearly 8 mllion tons of the sludge of the city sewage plant come out in Shanxi province every year, in order to make use of it, we add domestic garbage, loess or sand in different proportions to the sludge composting. The products can be developed to efficient organic - inorganic compound fertilizer and organic nutrient soil which contain many trace elements. The fertilizers used in crops and flowers can increase the production, hight ,number of the buds, root length of the flower plants. It is obviously better than the control group. The development of these fertilizers is not only the availability of trace elements in low-cost compound fertilizer but also elimination of the environmental pollution caused by sludge. It creates the certain social and economic benefits.