Printing and dyeing wastewater quality-divided treatment and reclaimed water reuse integrated system and treatment method

• Main Authors: ZHANG KUAN, AN JIE, CHEN TAO, ZHANG PEI, LI NAN, JING ZHONGQIU, JIAO JUNXIA
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The integrated system comprises a characteristic wastewater centralized pretreatment system, a heavily polluted wastewater pretreatment system, a mixed wastewater biochemical treatment system, a mixed wastewater advanced treatment system, a reclaimed water reuse treatment system, a standard discharge treatment system and a sludge treatment system, effluent of the characteristic wastewater centralized pretreatment system is collected to the heavily-polluted wastewater pretreatment system, effluent of the heavily-polluted wastewater pretreatment system is collected to the mixed wastewater biochemical treatment system, and effluent of the mixed wastewater biochemical treatment system is collected to the mixed wastewater advanced treatment system; one part of the effluent of the mixed wastewater advanced treatment system enters the reclaimed water reuse treatment system, and the other part of the effluent enters the up-to-standard discharge treatment system. Aiming at the water quality characteristics of the prin