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    • 67. 发明申请
    • METHOD AND APPARATUS FOR PERFORMING SURFACE FILTRATION FOR WASTEWATER MERCURY REMOVAL
    • 用于进行废水去除的表面过滤的方法和装置
    • WO2014058596A1
    • 2014-04-17
    • PCT/US2013/060794
    • 2013-09-20
    • EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    • MASCIOLA, David, A.MICHAELIS, Owen, R.
    • C02F1/00B01D29/27C02F1/28C02F1/52C02F1/54C02F9/00
    • C02F1/5236C02F1/001C02F1/283C02F1/54C02F9/00C02F2101/20
    • A method and treatment unit for removing particulate mercury from aqueous streams such as wastewater streams from hydrocarbon processing is disclosed. Mercury solids are removed by means of a surface filter configured in the shape of a bag. The separated solid mercury can be thickened and dewatered by removing the spent filter bag from service and allowing the water to drain and/or evaporate. The dewatered solids can then be disposed of together with the spent bag to an approved solid waste disposal facility. Coagulants, fiocculants, and mercury precipitants can be injected upstream of the filter bag if required to increase removal efficiency by precipitating dissolved ionic mercury and increasing the particle size of the mercury solids. Following bag filtration, activated carbon or an alternative technology ( e.g ., mercury specific ion exchange resin or adsorbent) can be applied to remove any trace concentrations of dissolved elemental and organic forms of mercury if required based on local discharge requirements.
    • 公开了一种用于从烃处理中除去诸如废水的水流中的微粒汞的方法和处理单元。 汞固体通过配置成袋子形状的表面过滤器去除。 分离的固体汞可以通过从使用中除去废过滤袋而变稠并脱水,并允许水排出和/或蒸发。 然后将脱水的固体与废袋一起处理到批准的固体废物处理设施。 如果需要通过沉淀溶解的离子汞并增加汞固体的粒径来增加去除效率,则可以在过滤袋的上游注入凝结剂,吸收剂和汞沉淀剂。 在袋式过滤之后,如果需要,可以应用活性炭或替代技术(例如汞特异性离子交换树脂或吸附剂)以根据局部放电要求去除任何痕量的溶解的元素和有机形式的汞。