When printing and dyeing wastewater is discharged, it often has some residual heat.

Shaoxing Bao textile, cotton and hemp dyeing and Printing Co., Ltd. is taking the trouble from this humble place. In March this year, they installed 16 intelligent sewage heat exchangers, so that the waste heat in printing and dyeing wastewater can be reused, and 80 tons of steam can be saved a day, which is equivalent to less than 2700 tons of standard coal in a year. Therefore, the enterprise will reduce the expenditure of about 4 million yuan, and the investment recovery will take only six months.

Shaoxing county is the key energy consuming County in the whole province, and its energy consumption level is generally high. Under the background of energy shortage and price increase, energy conservation is not only a practical need for resource protection, but also helps enterprises to reduce costs and win competitive advantages. Enterprises such as "treasure spinning" attach importance to energy saving enterprises, and now more and more are in Shaoxing county.

In July 18th, the heads of more than 40 printing and dyeing enterprises rushed to the Binhai Industrial Area to participate in the on-site promotion meeting of energy saving technology for printing and dyeing wastewater reuse, organized by the Shaoxing economic and Trade Bureau, to learn the experience of energy saving and consumption reduction of enterprises such as "Bao spinning" and "BELLE Heng".

From the relevant departments of Shaoxing County, the energy consumption level of Shaoxing county has maintained a steady downward trend in the first half of the year, through the decomposition of the implementation of energy-saving targets and the corresponding policy guidance.

Above Designated Size Industrial enterprises, the comprehensive energy consumption of 10000 yuan output value is 0.31 tons of standard coal, down 14.1% from the same period last year.

In particular, 183 key energy intensive enterprises in printing, dyeing, thermal power, building materials, chemical fiber and other industries have actively promoted and applied advanced energy-saving technology and equipment. The comprehensive energy consumption of 10000 yuan output value is 0.45 tons of standard coal, down 12.6% from the same period last year.

Comprehensive energy consumption accounts for about 44% of the total industrial energy consumption in Shaoxing county.

These enterprises have effectively controlled energy consumption by introducing low energy consumption equipment, implementing energy saving technology pformation and applying advanced technology.

BELLE Heng printing and dyeing Co., Ltd. increased 13% in the first half of this year compared with the same period last year, sales increased by 18%, while total energy consumption dropped by 1%.

BELLE Heng printing and dyeing Co., Ltd. carries out meticulous management, calculates the energy consumption of each machine platform, sets up energy consumption quota assessment management, and reduces energy waste from all aspects of production.

Jin Xianghui textile printing and dyeing Co., Ltd. achieved the goal of energy saving through the introduction of air flow dyeing machine, processing the same amount of cloth, which saved more than half of the water than the traditional dye vat. The processing time needed also shortened by nearly half, and the steam consumption was saved by 30% to 40%.

While doing a good job of saving articles, Shaoxing dyeing and printing enterprises also actively develop and utilize renewable energy resources to break through the bottleneck of energy resources.

Asia Pacific special printing and dyeing Co., Ltd. is implementing the industrial solar water heating project. They gather solar energy on the roof of the plant. It is estimated that more than 4.4 tons of steam can be generated in one year, which is equivalent to 6000 tons of standard coal saved.

This will start the province's industrial use of solar energy.

In addition, energy saving and consumption reduction has forced Shaoxing county enterprises to adjust their product mix, so that enterprises can return to life and seek new development.

"Bao textile printing and dyeing", when faced with many pressures such as high cost of pad dyeing and nearly collapse, resolutely decided to stop the pformation of the original pad dyeing line and expand the true wax printing, and achieved better economic and social benefits. In the first quarter of this year, the output value increased by 195% compared with the same period, while the sewage discharge volume decreased by 41%.