High-power recycling process for printing and dyeing wastewater

• Main Authors: HOU YUTING, WANG JIANFENG, LIU RUI, LIU PENG, XU YINONG, ZHANG KAN, WAN QIZHI, LI ZEDONG, JIN DONG-KEUN, YIN MIAOMIAO
• Format: Patent
• Language: Chinese; English
• Published: 28.03.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a printing and dyeing wastewater high-power recycling process, which comprises: an HMF curtain type membrane system for removing suspended solids and turbidity from water overflowing from a secondary sedimentation tank; the anti-pollution reverse osmosis system is used for receiving water flowing through the HMF curtain type membrane system and removing inorganic salts, bacteria, microorganisms, viruses, colloids and organic matters to form fresh water and concentrated water; and the material membrane concentration system is used for separating chromaticity, COD (Chemical Oxygen Demand) and salt of the concentrated water. On the basis of the existing process technology, a pollution-resistant HMF curtain type membrane is replaced, and anti-pollution reverse osmosis, material membrane concentration, medium-pressure reverse osmosis and Fenton systems are added, so that fresh water is a first product, Fenton effluent is used as a second product, sludge is used as a third product, and the f