Printing and Dyeing Wastewater Treatment Equipment

Product Description

The printing and dyeing wastewater in the workshop is collected by the pipe network and then enters the sewage treatment system. After the large floats are intercepted by the grid, it enters the aeration adjustment tank to adjust the water quality and quantity. The sewage pump lifts the printing and dyeing wastewater to the hydrolysis and acidification tank. Under the action, the macromolecular organic matter in the printing and dyeing wastewater is decomposed into small molecular organic matter, which improves the biodegradability of the water quality and effectively removes the chromaticity of the water quality. Facilitate subsequent aerobic treatment. Under the action of aerobic microorganisms, the organic matter in the printing and dyeing wastewater is decomposed into water and CO2 to further degrade the organic matter in the water. The sewage is further processed by the sedimentation tank, and the effluent enters the decolorization tank, and the decolorization treatment makes the sewage discharge up to the standard. After the sludge settles, part of the sludge is returned to the integrated equipment pool. The surplus sludge is pumped into the sludge thickening tank by the sludge pump, and after the thickening and volume reduction treatment, the sludge pump is pumped into the sludge drying tank for dewatering treatment, and the treated sludge is dried and transported outside. Disposal.
In recent years, due to the development of chemical fiber fabrics, the rise of imitated silk and the progress of printing and dyeing finishing technology, PVA pulp, rayon alkali hydrolyzate (mainly phthalic acid), new additives and other difficult-to-biodegrade organic substances A large amount of wastewater enters the printing and dyeing wastewater, and its CODCr concentration has also increased from the original hundreds of mgm to more than 2000-3000mg/L, BOD5 increased to more than 800mg/L, and the pH value reached 11.5-12, so that the original biological treatment system CODCr was removed The rate dropped from 70% to around 50%, or even lower
Silk, hemp dyeing and finishing, polyester dyeing and finishing wastewater treatment process:
Grille—pH adjustment—regulating tank—physical and chemical treatment—hydrolysis acidification—contact oxidation—decolorization treatment—standard discharge

Suzhou Weizhi Water Treatment Equipment Co., Ltd. was established in 2008. The company has more than ten years of water treatment technology. It is a professional water treatment equipment company in Suzhou. By the end of 2019, water treatment technology has successfully implemented more than 1500 projects at home and abroad, with equipment treatment capacity of more than 60000 tons / day, and has solved water problems for more than 1500 customers, Industries involved: environmental protection, chemical industry, machinery, medicine, electronics, food, community water and other equipment; The company's existing production equipment: wastewater treatment equipment, reclaimed water reuse equipment, ultra pure water equipment, pure water equipment, evaporation equipment, etc; R & D projects: treatment of waste leachate, seawater desalination, application and development of energy recovery device, remote data acquisition of sewage treatment equipment and guidance tips for on-site practical application. Patents: at present, the company has 3 invention patents, 12 practical patents and 13 software patents. In addition, the company provides customers with fast and high-quality services with complete production and manufacturing plants, perfect design, excellent construction quality and perfect after-sales service quality. With the successful practice of thousands of projects, the company has extremely rich experience in design, implementation and operation.