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发明公开
CN102792802A 一种脱水污泥改良苏打型盐碱土的方法 无效 - 撤回

一种脱水污泥改良苏打型盐碱土的方法
摘要：
一种脱水污泥改良苏打型盐碱土的方法，它涉及改良苏打型盐碱土的方法，本发明要解决现有污水处理厂产生的脱水污泥在处置时会有能耗高、费用高、操作不便、污染大气环境和浪费脱水污泥资源的问题。本发明中一种脱水污泥改良苏打型盐碱土的方法通过如下步骤来实现：一、选地并挖排水沟；二、将城市污水处理厂脱水污泥施加于苏打型盐碱土地上并种植紫花苜宿；三、将紫花苜宿作为绿肥就地翻压于待改良的苏打型盐碱土地上并二次施加城市污水处理厂脱水污泥；四、连续二年重复步骤二和三进行改良，完成对苏打型盐碱土地的改良过程。本发明可应用于城市污水处理工程领域及苏打型盐碱土的改良工程领域。
摘要（英）：

The invention discloses a method for modifying soda saline-alkali soil with dewatered sludge and relates to a method for modifying soda saline-alkali soil, and the method is used for solving the problems of high energy consumption, high cost, inconvenience in operation, pollution of atmospheric environment and waste of dewatered sludge resources when disposing of the dewatered sludge produced by sewage treatment plant. The method for modifying the soda saline-alkali soil with dewatered sludge disclosed by the invention comprises the following steps of: I, selecting land and digging a drainage ditch; II, applying the dewatered sludge from an urban sewage treatment plant to the soda saline-alkali soil land and planting alfalfa; III, turning over and pressing the alfalfa utilized as green manure on the soda saline-alkali soil land to be modified and applying the dewatered sludge from the urban sewage treatment plant for the second time; and IV, continuously repeating the steps II and III for two years for modification to finish the modification process of the soda saline-alkali soil land. The method disclosed by the invention can be applied to the field of urban sewage treatment engineering or the modification engineering of soda saline-alkali soil.

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