| Project Description | The industrial wastewater from a group in Jiangmen originates from container production: steel plate alkali washing wastewater for rust and oil removal (~2 t/week), spray painting scrubber wastewater for VOC and paint mist removal (~570 m³/day), and desorption wastewater from activated carbon VOC treatment (~30 m³/day), with a total daily volume of ~600 m³/day. All wastewater is 100% reused.The wastewater contains multiple alcohols, such as n-butanol, isobutanol, and sec-butanol, with high COD (raw COD ~8,000 mg/L; after flotation ~3,000 mg/L) and inhibitory effects on microorganisms, classifying it as high-concentration, hard-to-treat wastewater. Conventional pre-treatment + tertiary biological treatment is insufficient to meet reuse water quality standards.ZQQD adopts the FCM-IV electro-catalytic process combined with SA03 ozone catalytic oxidation and tertiary biological treatment, efficiently and stably treating the wastewater, ensuring effluent meets strict industrial reuse water quality standards without increasing salt content. To maintain salt concentration, the system incorporates RO concentration + evaporation crystallization, ensuring long-term stable operation. The effluent meets GB/T 19923-2005 “Reclaimed Water for Industrial Use” standards for process and product water. |
