초록 ▼

A process wastewater treatment plant, and a process relating thereto, which converts process wastewater generated in battery manufacturing and the like into clean process water and sodium sulfate salt by treating the process wastewater to remove impurities and contaminants, including debris, oil/gre

A process wastewater treatment plant, and a process relating thereto, which converts process wastewater generated in battery manufacturing and the like into clean process water and sodium sulfate salt by treating the process wastewater to remove impurities and contaminants, including debris, oil/grease, heavy metal oxides, lead and other heavy metals, suspended solids, bacteria, organic compounds, and/or gases, from the wastewater to obtain a clean neutral sodium sulfate brine, subjecting the brine to heat to obtain distilled water and sodium sulfate salt, and purifying the distilled water by reverse osmosis for reuse as clear process water.

대표청구항 ▼

[ I claim:] [1.] A process wastewater treatment plant for converting wastewater generated in battery manufacturing and other metals related industries into clean process water and sodium sulfate salt, comprisingtreatment means for treating the process wastewater to remove impurities and contaminants

[ I claim:] [1.] A process wastewater treatment plant for converting wastewater generated in battery manufacturing and other metals related industries into clean process water and sodium sulfate salt, comprisingtreatment means for treating the process wastewater to remove impurities and contaminants, including debris, oil/grease, heavy metal oxides, lead and other heavy metals, suspended solids, bacteria, organic compounds, and/or gases, from the wastewater to produce a clean neutral sodium sulfate brine, wherein the treatment means includes separating means for separating debris, oil/greases, and heavy metal sediments from the wastewater, chemical treatment means for chemically treating the wastewater to neutralize acid in the wastewater, to coprecipitate iron and other heavy metals in the wastewater into precipitate, and to adsorb heavy metals in the wastewater onto iron solids precipitate, and separating means for separating the heavy metal precipitate from the waste water, ultraviolet light means for subjecting the wastewater to ultraviolet light to kill bacteria in the wastewater, pH adjusting means for adjusting the pH of the wastewater to promote conversion of carbonates and bicarbonates in the wastewater into carbon dioxide, and deaerator means for removing gases from the wastewater, andheating means for subjecting the brine to heat to produce distilled water and sodium sulfate salt wherein the heating means includes evaporation means for evaporating a portion of the wastewater to produce steam and a concentrated sodium sulfate brine, harvesting means for harvesting sodium sulfate salt from the sodium sulfate brine, and collection means for collecting distilled water as the steam produced during evaporation cools.