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METHOD OF COMMON PROCESSING OF INDUSTRIAL WASTE WATER CONTAINING AMMONIA AND/OR HYDROGEN SULFIDE AND SODIUM HYDROXIDE
METHOD OF COMMON PROCESSING OF INDUSTRIAL WASTE WATER CONTAINING AMMONIA AND/OR HYDROGEN SULFIDE AND SODIUM HYDROXIDE
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机译:含氨和/或硫化氢和氢氧化钠的工业废水的通用处理方法
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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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