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Dynamic Experimental Study on Treatment of Acid Mine Drainage by Bacteria Supported in Natural Minerals

机译：天然矿物质中受药物治疗酸性矿矿排水的动态试验研究

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In order to solve the problem of pollution of acid mine drainage (AMD), such as low pH value and being rich in SO42-, Fe and Mn pollution ions, etc., immobilized particles were prepared by using sugar cane-refining waste (bagasse), a natural composite mineral (called medical stone in China) and sulfate-reducing bacteria (SRB) as substrate materials, based on microbial immobilization technology. Medical stone is a kind of composite mineral with absorbability, non-toxicity and biological activity. The adsorption capacity of medical stone is different according to its geographic origins. Two dynamic columns were constructed with Column 1 filled by Fuxin's medical stone-enhanced SRB immobilized particles, and Column 2 filled by Dengfeng's medical stone-enhanced SRB immobilized particles as fillers. The treatment effect on AMD with SRB-immobilized particles enhanced by medical stone from different areas was compared. Results showed that Column 2 had better treatment effect on AMD. The average effluent pH value of Column 2 was 6.98, the average oxidation reduction potential (ORP) value was -70.17 mV, the average removal percentages of SO42-, Fe2+ and Mn2+ were 70.13%, 83.82% and 59.43%, respectively, and the average chemical oxygen demand (COD) emission was 555.48 mg/L.
机译：为了解决酸性矿污染（AMD）的污染问题，例如低pH值并富含SO42-，Fe和Mn污染离子等，通过使用甘蔗精炼废物制备固定化的颗粒（Bagasse ）基于微生物固定技术，硫酸盐降低细菌（SRB）和硫酸盐降低细菌（SRB）的天然复合矿物（称为硫酸盐）。医用石材是一种具有吸收性，无毒和生物活性的复合矿物。医用石的吸附容量根据其地理起源而不同。两个动态柱构建有由阜新的医疗石头增强SRB固定的颗粒填充的第1栏，由邓丰医用石增强SRB固定化颗粒填充的第2​​栏作为填料。比较了对来自不同区域的医用石材增强的SRB-固定化颗粒对AMD的处理效果。结果表明，第2栏对AMD具有更好的治疗效果。柱2的平均流出物pH值为6.98，平均氧化还原电位（ORP）值为-70.17mV，SO42-，Fe2 +和Mn2 +的平均除去百分比分别为70.13％，83.82％和59.43％，以及平均化学需氧量（COD）排放为555.48 mg / L.

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