Method for removing chloride ion in sewage
A chloride ion and sewage technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problems of low operating cost, complicated operation, low equipment investment, etc., and achieve low operating cost. , Simple operation, easy to use effect
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example 1
[0019] Use the prepared polyferrous sulfate to carry out flocculation and precipitation treatment on chlorine-containing wastewater, add 1ppt of mercury nitrate reagent to the chlorine-containing wastewater to remove suspended particles, adjust the pH value to 9.5, and fully stir for 10 minutes to make it react completely, then Add excessive sodium sulfate and sodium oxalate to 500mg / L wastewater, and continue leaching for 30 minutes under normal pressure, so that the remaining traces of mercury ions in the wastewater can be precipitated, and finally the wastewater flows through the adsorption tower filled with biomass filter material for adsorption treatment , the effluent is both waste water that completely removes chloride ions. The chlorine content in the effluent is 0.21mg / L, and the removal rate is 99.97%.
example 2
[0021] Use the prepared polymeric ferrous sulfate to carry out flocculation and sedimentation treatment of chlorine-containing wastewater, add 5ppt of mercury nitrate reagent to the chlorine-containing wastewater to remove suspended particles, adjust the pH value to 11.5, and fully stir for 30 minutes to make it react completely, then Add excessive sodium sulfate and sodium oxalate to 1000mg / L wastewater, and continue leaching for 50 minutes under normal pressure, so that the remaining traces of mercury ions in the wastewater can be precipitated, and finally the wastewater flows through the adsorption tower filled with biomass filter material for adsorption treatment , the effluent is both waste water that completely removes chloride ions. The chlorine content in the effluent is 0.19 mg / L, and the removal rate is 99.96%.
example 3
[0023] Use the prepared polyferrous sulfate to carry out flocculation and sedimentation treatment on chlorine-containing wastewater, add 4ppt of mercury nitrate reagent to the chlorine-containing wastewater to remove suspended particles, adjust the pH value to 10, and fully stir for 20min to make it react completely, then Add excess sodium sulfate and sodium oxalate to 800mg / L wastewater, and continue leaching for 40 minutes under normal pressure, so that the remaining traces of mercury ions in the wastewater can be precipitated, and finally the wastewater flows through the adsorption tower filled with biomass filter material for adsorption treatment , the effluent is both waste water that completely removes chloride ions. The chlorine content in the effluent is 0.17mg / L, and the removal rate is 99.96%.
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