NON-DISCHARGE WASTEWATER TREATMENT USING MULTI-STEP VACUUM DECOMPRESSION EVAPORATION CONCENTRATION OF HIGH CONCENTRATION WASTEWATER

摘要

The present invention relates to a non-discharged wastewater treatment system using multi-stage vacuum evaporation and concentration of high-concentration wastewater of the present invention, and to a non-discharged wastewater treatment that treats pollutants contained in high concentrations in wastewater such as nutrients such as nitrogen and phosphorus by multi-stage vacuum evaporation , More specifically, it consists of pre-treatment, evaporation, and post-treatment processes to treat nutrient salts such as nitrogen and phosphorus at high concentrations, but includes a crystallization process to treat organic substances or high concentration concentrates generated in each process. It relates to a non-discharged wastewater treatment system using multi-stage vacuum evaporation and concentration of high-concentration wastewater to minimize water volume obtained and reuse condensed water in a process to reduce water consumption and improve environmental pollution.