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processes for treatment of wastewater containing mercury contamination
processes for treatment of wastewater containing mercury contamination
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机译：含汞污染废水的处理方法
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1330197 Mercury cathode cell FRIEDRICH UHDE GmbH 19 Nov 1971 [21 Nov 1970] 53842/71 Heading C7B [Also in Division B1] Mercury-bearing wastewater, from a plant for the electrolysis of brine employing a mercury cathode, is purified by evaporating water from the wastewater at subatmospheric pressure (e.g. 92À5 mm Hg) and condensing the vapour, the condensate being used as flushing water for the electrolysis plant. The concentrated impurities are intermittently discharged from the evaporator, by means of an adjustable timer, and may be treated to obtain mercury-bearing sludge, the dry sludge being sent to a distillation oven where mercury is recovered. Before being introduced into the evaporator, the wastewater may be submitted to treatment with hydrazine followed by filtration. The heat needed for the distillation may be obtained from hot brine.
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机译：1330197汞阴极电池FRIEDRICH UHDE GmbH 1971年11月19日[1970年11月21日]税号C7B [也属于B1分部]来自含汞阴极电解厂的含汞废水可通过蒸发水来纯化低于大气压（例如92-5 mm Hg）的废水并冷凝蒸汽，冷凝水被用作电解厂的冲洗水。浓缩的杂质通过可调计时器间歇地从蒸发器中排出，可以进行处理以获得含汞的污泥，将干燥的污泥送入蒸馏炉，在其中回收汞。在将废水引入蒸发器之前，可以先对其进行肼处理，然后进行过滤。蒸馏所需的热量可以从热盐水中获得。
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