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METHOD FOR SIMULATNEOUS PROCESSING WASTE WATERS WITH NH3 ANSD H2S CONTENT AND WASTE CAUSTIC LYE OF SODIUM CONTAINING SODIUM SULPHIDE
METHOD FOR SIMULATNEOUS PROCESSING WASTE WATERS WITH NH3 ANSD H2S CONTENT AND WASTE CAUSTIC LYE OF SODIUM CONTAINING SODIUM SULPHIDE
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机译:NH3和H2s含量同时处理含硫化钠的废碱法同时处理废水的方法
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摘要
The process serves for the pretreatment of both material streams for the purpose of further treatment in a biological final purification stage. The sodium hydroxide solution is first acidified with sulphuric acid to a pH between 3.0 and 7.0 and then, together with the NH3- and/or H2S-containing process effluents is subjected to NH3- and H2S-stripping. The vapours thus produced are further treated in a Claus apparatus, which is equipped with an NH3 cleavage catalyst, while the effluent flowing from the stripping column can be fed, after appropriate cooling, to the biological final purification stage.
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