Zhejiang Jinmo: An Innovative Way Of Green Circulation "Filtering Out" With Membrane

There is no doubt that the printing and dyeing enterprises are facing huge environmental pressure and economic cost due to sewage disposal. However, in the blue print fashion Town, with the goal of "green high-end and world leading", printing and dyeing enterprises with their own development are required to realize green circulation through a variety of efficient technologies, reduce the cost of sewage treatment, and transform the sewage treatment from a "sharp sword" to a "sharp weapon" to enhance the competitiveness of enterprises.

Zhejiang Yingfeng Technology Co., Ltd. is the leader of blue printing fashion Town Green cycle innovation. Last year, Yingfeng Co., Ltd., Zhejiang Jinmo Technology Co., Ltd. and other units jointly applied for the national key R & D plan "research and demonstration of printing and dyeing wastewater near zero discharge and resource utilization technology", and established the demonstration project of the project in the new plant area of Yingfeng Co., Ltd. This project is the only national key R & D program key project in Keqiao District in recent three years, providing scientific and technological support for promoting energy conservation and emission reduction of printing and dyeing enterprises and promoting transformation and upgrading of printing and dyeing industry.

It is the third deep cooperation between Zhejiang Jinmo and Yingfeng since it entered Keqiao market. "Resonating with enterprises with high standards and strict requirements is also a process of constantly challenging and improving ourselves. Blue print fashion town and Yingfeng shares are undoubtedly the lucky land and lucky star for Jinmo." Zhejiang Jinmo Technology Co., Ltd. General Manager Xu Yinong said.

Over the past six years, cooperation has been deepened

By separating water and pollutants by small membrane silk, printing and dyeing wastewater is transformed into pure water and returned to production In 2012, at the initial stage of Keqiao printing and dyeing industry cluster promotion project, after the wastewater membrane treatment process developed by Zhejiang Jinmo Technology Co., Ltd. entered Keqiao market, it once caused a sensation to Keqiao printing and dyeing enterprises.

But at that time, the cost of sewage treatment was low, and the one-time investment of membrane treatment process was high, which made many printing and dyeing enterprises flinch. "However, Yingfeng technology, which was just put into operation at that time, took the initiative to throw" olive branch "and talked with Mr. Fu for less than an hour, and it was a good match." Recalling the first cooperation between the two sides, Xu Yinong's memory is still fresh: "Yingfeng is determined to build a green factory. The high positioning makes me see the advanced concept of green environmental protection of Keqiao enterprises, and also strengthens our determination and confidence in deeply ploughing into Keqiao printing and dyeing Market."

Since the first cooperation in 2015, with the continuous iterative upgrading of membrane treatment technology in Zhejiang Tianjin, Yingfeng Co., Ltd. has upgraded from the second generation of membrane treatment process to the fourth generation, and now it has become the pilot printing and dyeing enterprise of national key R & D projects.

Five West Lakes can be filled with purified water filtered out by small membrane silk in a year

Yingfeng shares, Huaxia printing and dyeing, Oriental era The wastewater treatment status of printing and dyeing enterprises in blue printing fashion town is clear at a glance in Zhejiang Jinmo intelligent water affairs data center located in Keqiao science and technology park.

"In the blue printing fashion Town, more and more printing and dyeing enterprises like our membrane silk, which is inseparable from the green and environmental protection concept of Keqiao printing and dyeing enterprises." Xu Yinong revealed that at present, there are more than 40 printing and dyeing enterprises cooperating with it.

At present, the water reuse rate of the printing and dyeing wastewater treatment system on the market is generally 50-55%. Relying on big data, Zhejiang Jinmo has developed membrane treatment technology, making a big contribution to the most troublesome problems of printing and dyeing enterprises, and the recovery rate is as high as 65%. "Recovery rate means that the discharged wastewater is treated by membrane and becomes purified water, and then returned to the production workshop and then put into the next production and construction process. Therefore, the higher the recovery rate is, the greater the emission reduction and cost saving for printing and dyeing enterprises." Yingfeng shares new plant water treatment center related person in charge said. Whether corporate social responsibility is high or not, waste water treatment is willing to invest is a hard indicator.

After years of working hard in Keqiao printing and dyeing Market, Xu Yinong deeply felt the growing sense of social responsibility of Keqiao printing and dyeing enterprises. He revealed that according to the sewage treatment capacity of the enterprises cooperated by his company and calculated by 65% of the reclaimed water reuse rate, in Keqiao, the net amount of water filtered out from the sewage every year is enough to fill five West Lakes.

Help the development of green printing and dyeing industry, printing and dyeing wastewater is expected to "nearly zero discharge"

"After the printing and dyeing wastewater is treated by special nanofiltration membrane and series of technologies, the water reuse rate and salt reuse rate can reach 95% and 90% respectively, which can reduce nearly half of the operation cost." In Zhejiang Jinmo laboratory, R & D engineer Wang Qiliang showed the treated brine which can be used for dyeing cloth again.

In order to solve the development bottleneck of high pollution in the printing and dyeing industry, the national key R & D plan "research and demonstration of printing and dyeing wastewater near zero discharge and resource utilization technology" was pilot in Yingfeng Co., Ltd. The project is jointly developed by Zhejiang Jinmo, Zhejiang University and Tianjin University of technology.

Textile printing and dyeing industry is an important link in the whole textile industry chain. Industry insiders believe that through the implementation of the "near zero discharge" project, the key technology system of printing and dyeing wastewater near zero discharge will be established, the upgrading and transformation steps of printing and dyeing wastewater near zero discharge project will be accelerated, the reuse rate of salt and the economic practicability of the whole treatment process will be improved, the front-end interception and resource reuse of printing and dyeing wastewater will be realized, and the treatment cost of the whole water body will be reduced, which will eventually drive the printing and dyeing industry Develop to high quality.

At present, the demonstration project has been completed in the new factory area of Yingfeng. According to the daily treatment scale of 12000 tons of printing and dyeing wastewater, 44 tons of salt can be recovered every day, and nearly 9 million yuan of cost can be saved in one year (calculated by 330 days).