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钢筋网片镀锌处理后的废渣怎么处理?

添加时间:2019-09-04      发布人:

  钢网片经过镀锌处理后会产生大量的废料,会对环境造成污染,下面我们就谈谈废渣处理的方法。
  Steel mesh after galvanizing treatment will produce a large amount of waste, which will pollute the environment. Next, we will talk about the method of waste slag treatment.
  镀锌废渣主要来自两个方面:一是碱性镀锌液中产生的碳酸盐;第二,金属氢氧化物在污水处理中形成。
  Zinc-plating slag mainly comes from two aspects: one is carbonate produced in alkaline zinc-plating bath; the other is metal hydroxide formed in sewage treatment.
  第一种是用碳酸盐处理碱性锌:氰化物锌和碱性锌都是用氢氧化钠和氧化钠处理的,它们都能吸收空气中的二氧化碳并产生碳酸钠。当碳酸钠含量较低时,对洗浴有好处。然而,过多的内容会影响浴的性能。然后通过冷冻或加入石灰水将碳酸盐沉淀出来。
  The first is to treat alkaline zinc with carbonate: both cyanide zinc and alkaline zinc are treated with sodium hydroxide and sodium oxide, which can absorb carbon dioxide from the air and produce sodium carbonate. When the content of sodium carbonate is low, it is good for bathing. However, too much content can affect the performance of the bath. Carbonate is then precipitated by freezing or adding limewater.
  在碱性锌酸盐锌溶液中形成的污泥可溶于水,通过调节PH值直接排出。
  Sludge formed in alkaline zinc zincate solution can be dissolved in water and discharged directly by adjusting PH value.
济南钢筋批发
  镀锌钢网片生产过程中产生的氰化镀锌溶液中形成的污泥除含有大量碳酸盐外,还含有氰化钠涂层,给处理带来麻烦。该处理方法是将污泥与水溶解,按照含氰废水的处理方法进行处理。
  The sludge formed in cyanide zinc plating solution during the production of galvanized steel mesh contains not only a large amount of carbonate, but also sodium cyanide coating, which brings troubles to the treatment. The treatment method is to dissolve sludge and water and treat cyanide-containing wastewater according to the treatment method.
  关于污泥的处理,我们从前面的讨论中得知,处理镀锌废水产生的污泥主要是氢氧化钙和氢氧化铬。简单的氢氧化锌污泥可以溶解在浓氢氧化钠溶液中,再回到镀液(碱性镀锌液)中使用。酸性镀锌液应先用盐酸将污泥溶解到氯化锌中,再加入浴液。
  As for sludge treatment, we know from the previous discussion that the sludge from zinc plating wastewater treatment is mainly calcium hydroxide and chromium hydroxide. Simple zinc hydroxide sludge can be dissolved in concentrated sodium hydroxide solution and then returned to the plating solution (alkaline zinc plating solution). The sludge should be dissolved into zinc chloride with hydrochloric acid before adding bath solution.
  以上是钢网片的相关内容,希望对您有所帮助。
  Above is the relevant content of steel mesh, I hope to help you.
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