Printing And Dyeing Enterprises Use "Membrane" To Reduce Emissions

Physicochemical and biochemical treatment technology is widely used in dyeing and printing enterprises in our county. The average processing cost per ton is between 1.5 yuan and 2 yuan.

In the same treatment of one ton of printing and dyeing wastewater, the cost of membrane treatment technology is as high as 4.6 yuan.

Shaoxing's printing and dyeing enterprises, which are renowned for their shrewdness, are now doing this "losing business". They have launched the printing and dyeing wastewater treatment technology project and become a new bright spot in the industry.

In the "Sheng Xin dyeing and printing" of the Binhai Industrial Zone, except for the busy workshops, the construction workers are building new equipment on top of the hot more than 1000 days.

"This is a new technology of reclaimed water reuse -- membrane treatment technology."

Sheng Xin Printing and dyeing company operator said that the whole set of equipment is expected to be put into operation in late August.

In 3 months, 5 printing and dyeing enterprises, such as "Shu Mei Te" and "BELLE Heng", signed a cooperation agreement on membrane technology with the Ningbo branch of ordnance science and Technology Research Institute.

"Shaoxing printing and dyeing enterprises are very interested in the membrane processing technology and the way of" third party "management cooperation. Apart from the signing of these 5 enterprises, there are still many enterprises actively contacting us, consulting and negotiating.

Zhou Yusong of the Ningbo branch of ordnance Technology Research Institute disclosed that due to the sharp increase in Shaoxing business, they have rented office space in the Binhai Industrial Area and are ready to set up offices to meet the needs of business development.

In addition to cooperating with the Ningbo branch of the ordnance Technology Research Institute, many printing and dyeing enterprises also introduced advanced membrane treatment technologies abroad, such as "Zhi Ren printing and dyeing" to invest 8 million yuan to expand and pform the printing and dyeing wastewater treatment system and deep water reuse deep treatment. The Dow's reverse osmosis membrane technology was adopted, and it was planned to be put into use in September.

Why are there so many printing and dyeing enterprises hot film technology?

"3000 tons of pretreatment wastewater is treated by membrane treatment, and 2000 tons directly become clean water."

Zhang Guohua, the operator of the company, visited Suzhou and Ningbo, and finalized the membrane treatment technology.

He told reporters that the technology of emission reduction and water conservation, in line with the requirements of energy saving and emission reduction, for enterprises, the economic accounts "earn no money".

Take the Sheng Sheng dyeing and printing wastewater treatment technology project as an example, the concentration of COD in the treated water is reduced to less than 50mg/L, while the concentration of COD in the river water is about 100mg/L, so it can be reused in industrial water.

According to the industrial water price of 1.15 yuan per ton, the average sewage discharge cost per ton of waste water is more than 2.8 yuan per ton, without considering the management cost of labor and so on. The cost of 1 tons of water is definitely higher than 4 yuan, and the membrane treatment technology not only reduces its sewage discharge by 2/3, but also has obvious effect of reducing emissions and saving water.

To this end, "Sheng Xin Printing and dyeing" plans to launch the two phase of membrane treatment technology.

At that time, the company's emissions will be greatly reduced, so as to achieve the goal of energy conservation and emission reduction.

"In addition to reducing emissions and water-saving results, the pressure of environmental protection and emission reduction is also one of the driving forces for printing and dyeing enterprises to actively seek upgrading of wastewater treatment."

County Environmental Protection Bureau official said.

Since last year, our county has adopted a series of major measures, such as carrying out the special action of cleaning up construction projects in printing and dyeing chemical industry, printing and dyeing enterprises exceeding the standard of "final elimination" system and so on.

This year, our county has also imposed a "magic spell" on the excessive effluent of printing and dyeing enterprises, that is, the elimination of waste volume in the first row of a row is changed every 3 days.

Under the severe pressure of emission reduction, the printing and dyeing enterprises in Shaoxing county actively seek a way out, upgrade the wastewater treatment technology actively, realize energy saving and emission reduction, and relieve the pressure of environmental protection.

"Membrane treatment technology will play a decisive role in reducing emissions in our county's printing and dyeing industry and even the whole county."

Insiders said.