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    • 5. 发明申请
    • METHOD OF REDUCING RESIDUAL RECALCITRANT ORGANIC POLLUTANTS
    • 减少残留有机污染物的方法
    • WO2014036732A1
    • 2014-03-13
    • PCT/CN2012/081177
    • 2012-09-10
    • GENERAL ELECTRIC COMPANYWANG, SijingWANG, LeiZHANG, HaiwuXU, WeiqingZHOU, Ying
    • WANG, SijingWANG, LeiZHANG, HaiwuXU, WeiqingZHOU, Ying
    • C02F3/34C02F3/02
    • C02F3/341C02F3/02C02F3/04C02F3/106C02F3/107C02F3/108C02F3/1268C02F3/2853C02F3/348C02F2003/001C02F2003/003C02F2101/30C02F2101/327C02F2101/36C02F2101/38C02F2103/06C02F2103/365C02F2203/004C02F2305/06Y02W10/15
    • A method for reducing recalcitrant chemical oxygen demand (COD) of a liquid in a water system is provided. The method comprises pretreating the liquid in a pretreatment unit (12) to remove indigenous bacteria or microbes to a population level below which the indigenous organisms can interfere with the screened and externally introduced microorganisms. The liquid is then provided to a reactor (20) that has a filter bed (22) formed with a carrier material (26). Special microbes are screened and used to colonize the carrier material (26) to remove recalcitrant COD. A biofilm is cultured on the surface of the carrier material (26) to immobilize the screened microbes in the reactor (20). The method further comprises adding a co-substrate as the liquid enters the reactor (20) and percolating the liquid through the filter bed (22) colonized with the screened microbes to degrade at least part of the recalcitrant COD under aerobic conditions. The screened microbes comprise at least one microbial species selected from the group consisting of Bacillus, Comamonas, Arthrobacter, Micrococcus, Pseudomonas, Pediococcus, Achromobacter, Flavobacterium, Mycobacterium, Rhodanobacter, Stenotrophomonas and yeast.
    • 提供了一种降低水系中液体的难溶化学需氧量(COD)的方法。 该方法包括将预处理单元(12)中的液体预处理以将本地细菌或微生物除去至低于该水平的本地生物可能干扰被筛选和外部引入的微生物的群体水平。 然后将液体提供到具有形成有载体材料(26)的过滤床(22)的反应器(20)。 将特殊微生物筛选并用于定植载体材料(26)以除去顽固的COD。 在载体材料(26)的表面上培养生物膜,以将筛选的微生物固定在反应器(20)中。 该方法还包括当液体进入反应器(20)时加入共底物,并将液体渗透通过筛选的微生物定殖的过滤床(22),以在有氧条件下降解至少部分顽固性COD。 所筛选的微生物包含至少一种选自芽孢杆菌属,科马矛菌属,节杆菌属,微球菌属,假单胞菌属,类球菌属,无色杆菌属,黄杆菌属,分枝杆菌属,罗丹霉属,嗜麦芽寡养单胞菌属和酵母菌的微生物。