种嗜酸细菌作用下的基于含铁硫化矿的铬还原方法

• Format: Patent
• Language: Chinese
• Published: 15.03.2017
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

本发明公开了种嗜酸细菌作用下的基于含铁硫化矿的铬还原方法，属于环境工程领域的废水处理技术。在含铁硫化矿的铬还原过程中引入嗜酸铁硫氧化细菌，并在黄铁矿表面附着形成生物膜，能够有效消除黄铁矿表面的钝化层，克服了纯化学反应治理原料利用效率低下的问题，而且能够极大地加快还原反应动力学，黄铁矿基本能够达到完全利用。铬还原后能够和体系中的铁离子和硫酸根形成黄钾铁矾，施氏矿物等沉淀，过滤分离，即可去除体系中三价铬离子。此还原治理方式适应范围广，场地要求低，运行周期长，具有大规模工业化运用潜力。