Method for aerating separating and purifying weak acidic harmful gas dissolved in waste water
A harmful gas, weakly acidic technology, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve problems such as air pollution, air pollution in circulating water facility areas, and deterioration of washing and circulating water quality, and achieve the goal of reducing pollution Effect
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[0012] As shown in the figure, the washing circulating water comes from the cooling and washing process of the gas double standpipe; the air used for aeration and other gases can be supplied by a centrifugal blower and a Roots blower; The weak acid gas such as hydrogen sulfide in the water is blown out; the circulating water that has been aerated to remove hydrogen sulfide continues to enter the sedimentation tank to remove suspended solids; the gas containing hydrogen sulfide from the aeration tank enters the activated carbon adsorption tower or wet absorption Purification tower for processing. The gas is evacuated directly after purification.
[0013] The contriver has done the hydrogen sulfide stripping test of the gas washing circulating water, and the research results show that
[0014] test type
pH
gas-liquid ratio
Hydrogen sulfide stripping rate (%)
small test
5.3~7.0
70
91.8 (average)
industrial test
6~7
...
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