污泥-五种植物协同对赤矿泥土壤化处置的促进作用  

Promoting effect of sludge and five kinds of plants cooperation on soilformation of red mudandmineral mud

作　　者：徐敏 成官文[1] 岳远隋 徐晓宇 杜诚豪 王云龙 曾玉辉 冯杰 农国武[2] 黄振艺[2] XU Min;CHENG Guanwen;YUE Yuansui;XU Xiaoyu;DU Chenghao;WANG Yunlong;ZENG Yuhui;FENG Jie;NONG Guowu;HUANG Zhenyi(College of Environmental Science and Engineering,Guilin University of Technology,Guilin 541006,China;Guangxi Branch of Aluminum Corporation of China Limited,Pingguo 531400,China)

机构地区：[1]桂林理工大学环境科学与工程学院,广西桂林541006 [2]中国铝业股份有限公司广西分公司,广西平果531400

出　　处：《中国有色冶金》2023年第6期111-118,共8页China Nonferrous Metallurgy

基　　金：广西重点研发计划(桂科AB20297039);中国铝业股份有限公司科技攻关项目(gxzz201903);矿泥土壤化处置示范及赤泥矿泥土壤化处置技术工程应用(gxzz202210)。

摘　　要：为解决赤泥、矿泥的规模化、无害化处置问题,考察污泥-五种植物协同作用对控碱赤泥、脱水矿泥土壤化矿坑原位生态复垦的影响。结果表明,污泥-五种植物协同作用能显著降低赤矿泥基质的盐碱性,提高土壤化处置赤矿泥基质养分、酶活性和微生物的多样性,其中,pH值、全盐含量分别降至8.50、1.50 g·kg^(-1),达到了矿山生态环境保护与恢复治理技术规范的要求;有机质、全氮、全磷在植物第一生长季的含量达到了全国第二次土壤普查标准中的三级水平;施加污泥后赤矿泥基质碱性磷酸酶和脲酶最高活性分别达到0.17 mg·g^(-1)2h^(-1)、2.05 mg·g^(-1)24h^(-1)。该方法为赤泥、矿泥土壤化处置规模化生态处理提供了新思路。To explore the problem of large-scale and harmless disposal of the redmudandmineral mud,the study of in-situ ecological reclamation of alkali-control red mud and dewatered ore mud soiled mine pits was carried out by using the synergism of sludge and five kinds of plants cooperation.The findings demonstrated that the sludge and five kinds of plants cooperation could significantly lower the salt alkalinity of the red mud andmineral mud matrix and improve nutrients,enzyme activity,and microbial diversity of the red mudandmineral mud red mineral mud matrix used for soil chemical disposal.Among these,the pH and total salt levels were decreased to 8.50 and 1.50 g·kg^(-1),respectively,meeting the technical specifications for mine ecological environmental protection and restoration management.In accordance with the second national soil census criteria,the levels of organic matter,total nitrogen,and total phosphorus in plants'first growth season met the tertiary criterion.After sludge application,the greatest alkaline phosphatase and urease activity in the redmudand mineral mud matrix were 0.17 mg·g^(-1)2h^(-1)and 2.05 mg·g^(-1)24h^(-1),respectively.It offered a fresh concept for soil formation and large-scale ecological treatment of redmudandmineral mud.

关 键 词：赤泥 矿泥 土壤化 污泥-植物协同作用 原位生态修复 无害化处置 规模消纳 

分 类 号：X758[环境科学与工程—环境工程] TF821[冶金工程—有色金属冶金]