Research Of The Process Of HPF Coal Gas Desulfurization System Effluent’ Treatment

The process of HPF is popular in the field of coal gas desulfurization. This process has advantage of high desulfurize efficiency. In order to keep high desulfurize efficiency. It should release lots of desulfurized effluent which is filled with compound. And the compound is difficult to disposal by animalcule. So the ecology and groundwater is polluted by the release of desulfurized effluent. The effluent contains NH4SCN>(NH4)2S2O3、S、(NH4)2S and (NH4)2SO3. Thereinto NH4SCN’density is150g/L.(NH4)2S2O3’density is50g/L. Therefore the key of treating the effluent is to treat NH4SCN and (NH4)2S2O3.This thesis adopting active carbon adsorption method. Researching the relation of pH、 Fe3+density and the effect of effluent treatment, we obtain the removing percent of (NH4)2S2O3is90%, The removing percent of NH4SCN is24.6%。 The paper also adopt Fenton reagent deep oxidational way. Researching the relation of pH> the weight of materia medica and the effect of effluent treatment. The best rate of eliminate (NH4)2S2O3from effluent is100%. And NH4SCN’s best treating effect is 41%. And waste water’COD reduced from140,000to110,000.Cokifying factory using mixture releasement which mingled cokifying trash water with desulfurized effluent mixed as1:100. but this step can not directly using biochemical disposal yet. This thesis adopt Fenton reagent deep oxidational way, which considered the affection of staff quantity、 reaction temperature、 pH about the disposal effect. Adopting equally designated experimental outcome, at last, we obtain the removing percent of (NH4)2S2O3is100%,the removing percent of NH4SCN is95.6%.