High-chlorine wastewater and high-sulfate radical wastewater treatment process
The invention discloses a high-chlorine wastewater and high-sulfate-radical wastewater treatment process which comprises the following steps: respectively treating high-chlorine wastewater and high-sulfate-radical wastewater, recycling zinc in the high-chlorine wastewater by using a zinc precipitati...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a high-chlorine wastewater and high-sulfate-radical wastewater treatment process which comprises the following steps: respectively treating high-chlorine wastewater and high-sulfate-radical wastewater, recycling zinc in the high-chlorine wastewater by using a zinc precipitation reaction tank, separating heavy metal ions from liquid by using a first heavy metal removal reaction tank, and carrying out solid-liquid separation to obtain heavy metal precipitation residues and calcium chloride filtrate; heavy metal precipitation slag is conveyed to a pyrometallurgy system, zinc ions in a water body are enriched through precipitation and then serve as production raw materials of a front-end production system, waste is turned into wealth, and considerable economic effects are generated; sulfate ions in a water body are converted into calcium sulfate, so that the quality of sodium chloride in a rear-end evaporative crystallization system is ensured, the generation amount of carnallite is reduce |
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