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发明公开
CN109928793A 一种利用农作物秸秆及剩余活性污泥生产矿山废弃用地修复用土的方法 无效 - 驳回

一种利用农作物秸秆及剩余活性污泥生产矿山废弃用地修复用土的方法
摘要：
一种利用农作物秸秆及剩余活性污泥生产矿山废弃用地修复用土的方法，属于矿山修复及资源再利用领域。本发明所述的矿山废弃用地修复用土含有：剩余活性污泥、农作物秸秆、草木灰和生石灰。本发明所述的矿山废弃用地修复用土的生产步骤如下：1)将剩余活性污泥经过SACT污泥堆肥工艺制成污泥熟土；2)然后向其中加入草木灰进行重金属钝化；3)之后将农作物秸秆粉碎，并好氧发酵得有机肥料；4)将2)和3)混合，并加入草木灰，调节pH和含水率，得到矿山废弃用地修复用土。本发明制备的修复用土针对矿山废弃用地土壤偏酸、保水保肥能力变差、土地质量下降及呈现贫瘠化等现象，并可与其他矿山修复方法联用，对废弃矿山进行综合治理。
摘要（英）：

The invention discloses a method for producing mine waste land restoration soil by utilizing crop straws and residual activated sludge, and belongs to the field of mine repair and resource reutilization. The mine waste land restoration soil comprises the residual active sludge, the crop straw, plant ash and raw lime. The production steps of the mine waste land restoration soil are as follows: 1) the residual activated sludge is prepared into sludge mellow soil through an SACT sludge composting process; 2) the plant ash is added into the sludge mellow soil for heavy metal passivation; 3) the crop straw is crushed, and aerobic fermentation is performed to obtain an organic fertilizer; and 4) the sludge mellow soil treated by the step 2) and the organic fertilizer obtained by the step 3) aremixed, the plant ash is added, the pH value and the water content are adjusted, and finally the mine waste land restoration soil is obtained. The mine waste land restoration soil aims at the phenomenasuch as mine acid waste land soil, poor water-retaining and fertilizer-retaining capacity, soil quality reduction and impoverishment, and can be used in combined with other mine repairing methods forcomprehensively treating waste mines.

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