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钢筋网镀锌产生的废渣要怎么处理?

添加时间:2019-12-10      发布人:/

  钢网经过镀锌的过程会产生大量的废料,会对环境造成污染,下面我们来谈谈废渣的处理。
  The process of steel mesh galvanizing will produce a lot of waste materials, which will pollute the environment. Let's talk about the disposal of waste residue.
  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;二是污水处理过程中形成的金属氢氧化物。
  The waste residue of zinc plating mainly comes from two aspects: one is carbonate produced in alkaline zinc plating solution; the other is metal hydroxide formed in sewage treatment process.
  首先是碱锌碳酸盐的处理:氰化锌和碱性锌酸盐在氢氧化钠和氧化钠中大量使用,它们都能吸收空气中的二氧化碳形成碳酸钠。当碳酸钠含量低时,对洗浴有好处。但是,当含量较大时,镀液的性能会受到影响。碳酸盐通过冷冻或加入石灰水沉淀,形成污泥。
  The first is the treatment of alkaline zinc carbonate: zinc cyanide and alkaline zincate are widely used in sodium hydroxide and sodium oxide, both of which can absorb carbon dioxide in the air to form sodium carbonate. When the content of sodium carbonate is low, it is good for bathing. However, when the content is large, the performance of the bath will be affected. Carbonate precipitates by freezing or adding lime water to form sludge.
  在碱性锌酸盐镀锌液中形成的污泥可与水溶,通过调节PH值直接排出。
  The sludge formed in alkaline zincate zinc plating solution can be dissolved in water and discharged directly by adjusting pH value.
  镀锌钢网生产过程中产生的氰化镀锌液中形成的污泥除含有大量的碳酸盐外,还含有氰化钠,给处理带来麻烦。处理方法是将污泥与水溶后,按含氰废水处理方法进行处理。
济南钢筋批发
  The sludge formed in the cyanide zinc plating solution produced in the production of galvanized steel mesh contains not only a large amount of carbonate, but also sodium cyanide, which brings trouble to the treatment. The treatment method is to dissolve the sludge and water, and then treat the wastewater containing cyanide.
  在污泥处理方面,从前面的讨论中可以看出,在处理镀锌废水时产生的污泥主要是氢氧化物和氢氧化铬。纯氢氧化锌污泥可以溶解在浓氢氧化钠溶液中,然后返回到镀液(碱性锌溶液)中使用。在酸性镀锌液中,污泥应先与盐酸溶解在氯化锌中,再加入到镀液中。
  In terms of sludge treatment, it can be seen from the previous discussion that the sludge produced in the treatment of zinc plating wastewater is mainly hydroxide and chromium hydroxide. Pure zinc hydroxide sludge can be dissolved in concentrated sodium hydroxide solution, and then returned to the plating solution (alkaline zinc solution) for use. In the acid zinc plating solution, the sludge should be dissolved in zinc chloride with hydrochloric acid first, and then added to the plating solution.
  以上是关于钢筋网的相关内容,希望对您有所帮助。
  The above is about the relevant content of the steel mesh, I hope to help you.
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