Broad Prospects For Printing And Dyeing Water Film Technology

At the beginning of last year, Shaoxing Eagle Xiang dyeing and finishing Co., Ltd., in cooperation with Hangzhou's environmental Polytron Technologies Inc, implemented " printing and dyeing The waste water treatment and reuse project adopts membrane separation integrated process to reuse water, and the sewage reuse rate reaches over 60%, and COD drops to 20 mg per litre. At present, the company produces 2800 tons of fresh water, which is used for water production all the time. Both economic and social benefits are considerable. According to the introduction, membrane treatment technology has enabled the company to achieve various environmental goals and achieve maximum production capacity.

In August of the same year, Sheng Xin Printing and dyeing company's new technology of reclaimed water reuse -- membrane treatment technology was put into use. The concentration of COD in treated water dropped to 50 mg per litre, while the concentration of COD in the river reached 100 mg per litre, which could completely be used as production water again. "3000 tons of pretreatment wastewater can produce 2000 tons of clean water after membrane treatment." The company's responsible person said that the introduction of membrane treatment accounts, enterprises can calculate.

In 2010, "Zhi Ren printing and dyeing" invested about 15000000 yuan in the transformation of the pool, and invested 8 million yuan last year. It introduced the reverse osmosis membrane technology produced by Dow company, which greatly reduced the COD concentration of the treated industrial water. Reporters learned that the company's industrial water, including at least six thousand or seven thousand tons of sewage, after membrane treatment, has now been controlled to two thousand or three thousand tons.

Reporters learned in the interview that up to now, Shaoxing has built 210 sewage treatment facilities, with a scale of 570 thousand tons / day, 65 water reuse enterprises, and a daily capacity of 200 thousand tons. Among them, the printing and dyeing industry biochemical treatment technology in the forced promotion, the county more than 100 printing and dyeing enterprises using membrane treatment technology, the wastewater reuse rate reached 70%.

The relevant person in charge of an environmental protection unit in Shaoxing County said that compared with the traditional reclaimed water treatment process, the membrane treatment process has invested heavily. A few years ago, printing and dyeing enterprises were far away from the technology of membrane treatment. However, in the face of increasingly stringent requirements for energy saving and emission reduction, the advantages of membrane technology have become increasingly apparent, and investment companies have benefited from it. It is against this background that membrane technology has been increasingly favored by Shaoxing printing and dyeing enterprises.