Air purification cooling waste water treatment method for viscose glue fiber workshop

Abstract

The invention discloses a treatment process of air purification and wastewater cooling in cellulose viscose production department including: 1) biocidal treatment of wastewater, 2) the treatment of flocculation, 3) filtration in a plurality of filters, 4) addition of reducing agent, 5) addition of acid, 6) addition of antisludging agent, 7) precise filtration, 8) reverse osmosis treatment, 9) chemical scrubbing, 10) deaerated treatment, 11) reducing acidity by adding alkali to reach index demand of water recycle with the PH value being 7-8. The invention is used for treatment of air purification and wastewater cooling in cellulose viscose production department, and reduces suspended matter effectively to ensure the stable operation of counter-osmosis device and improve the quality of process recycle water, as the result that the process includes disinfection, flocculation, and through pretreatment and backwash of multiple-media filter and precise filter, that ensure the improvement of the quality of cellulose viscose products.

Description

technical field [0001] The invention belongs to industrial wastewater treatment and reuse. Specifically, it is a recycling process for treating air purification and cooling waste water in a man-made viscose fiber spinning workshop by using a reverse osmosis membrane process technology (including a device). Background technique [0002] According to the current situation of domestic production of viscose fiber, for every ton of silk produced, the cooling water consumption for air purification in the spinning workshop is 80 tons, and the annual production of viscose fiber is about 1 million tons, and the water resource consumption is very huge. The cooling waste water is generally only used for flushing the floor, or used for backwashing resin softeners and other low-quality water occasions, and finally undergoes biochemical treatment and discharge. [0003] With the application of membrane wastewater treatment technology, the applicant has succes...

AI Technical Summary

Problems solved by technology

In addition, the electrodialysis method was used to carry out experimental research on the recovery of chemical raw materials and pure water from the second-bath acid wastewater in viscose fiber production, and positive results have also been achieved. However, it is required to recycle production and ensure high-quality products. Water quality is still far away

However, the use of reverse osmosis technology is expected to meet the requirements of use. The use of reverse osmosis membrane technology to treat air-cooled wastewater in viscose fiber production workshops and reuse them as the last rinsing process for viscose fibers has not yet been published.

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