Textile Industry Again Encounter "Water Hoop Curse" Industry Encountered Obstacles

According to the 2012 edition of the discharge standard of pollutants for textile dyeing and finishing industry, the direct discharge of chemical oxygen demand (hereinafter referred to as COD) of the existing textile enterprises needs to be controlled at 80 mg / litre starting in January 1st this year. This is from 2013 COD straight row standard to 100 mg / litre, textile dyeing and finishing industry sewage discharge threshold is raised again.

On the one hand, the comprehensive cost of labor, raw materials and other comprehensive costs has led to a decline in profits. On the other hand, the environmental protection law, such as the new environmental protection law, is getting tighter and tighter. The textile industry, which has long been in the top three of the wastewater discharge volume, is faced with a more difficult choice of sewage disposal.

The elevator rose to the 13 floor, and there was a smell of incense. Go out of the elevator and turn around, the koi play lotus, the river winding, the green plant drop, the waterfall curtain, the unique air garden is forgotten. This is the top professional fabric supplier in the world -- the top floor of the office building of the mutual Textiles Holdings Limited.

"The water in this garden is factory waste water reuse. But if we do not save energy and reduce emissions, the 13 meeting rooms will not be able to enter people. Smoke coming from the windows will choke people to tears, "Wang Baosheng, Deputy Secretary General of the national textile industry technology support alliance, pointed to 12 chimneys on another roof of the park.

Textile printing and dyeing enterprises have stereotypes, and stereotypes exhaust is very pungent. In 2011, the company launched the waste heat recovery and reuse project of the stereotype machine, which had over 99.75% dust and over 90% desulfurization. It could also recycle waste gas for heating air-conditioning water and ironing processes.

In order to let reporters feel the contrast, Wang Baosheng's on-site command turned off a recycling device. After a few seconds, thick white smoke poured out of the chimney, and the pungent smell was disgusting. "In order to achieve the best results, we do not use the traditional water spray technology, because it can only remove large particles, and too much waste water, it is not cost-effective." Wang Baosheng said, "the core environmental protection issue of textile dyeing and finishing industry is water recycling. Even if we do waste gas treatment, we must also consider water saving."

Water and wastewater treatment has always been a headache for the textile industry.

The textile industry is a well deserved industrial water user. Usually, 1 tons of textile and dyeing products will consume 100 to 200 tons of water. In recent years, China's water price has been on the rise. Taking Guangdong Shenzhen as an example, its industrial water price has risen 50% in the past 3 years.

Textile industry Wastewater discharge And the power of pollution is amazing. According to the environmental statistics in 2012, in the 41 industrial sectors surveyed, the textile industry wastewater emissions amount to 23.7 billion tons, ranking third, and the textile industry COD emission ranks fourth in the industrial sector.

With the rising water price and the continuous improvement of environmental standards, textile industry The water curl is getting tighter and tighter. According to the "discharge standard for pollutants in textile dyeing and finishing industry", the indirect COD emission standard of printing and dyeing enterprises was 200 mg / litre in 2013, and the COD content of straight row environmental effluent increased to 100 mg / litre, but many enterprises still exceeded the standard discharge. Take Zhejiang as an example, in the first quarter of 2013, the key pollution source monitoring report of Zhejiang province showed that 391 textile enterprises in the province exceeded the standard discharge, accounting for 92.4% of the total number of superenterprises.

Since this year, the national standard of textile wastewater discharge has been further improved, and the new "environmental protection law" has been escorted for the implementation of supervision. "The textile industry has raised the standard of wastewater discharge. It seems that the bow has not been turned back." Xi Dan Li, vice chairman of the China dyeing and printing industry association and professor of Donghua University, said that in recent years, the requirements for environmental protection are getting higher and higher, and law enforcement is becoming more and more stringent. "The new environmental protection law gives enterprises no space to escape, especially in terms of water management, and enterprises can no longer be stingy."

Money is always a topic that enterprises can't do in environmental protection reform. In the textile industry with an average profit margin of less than 5%, it is too shy to make environmental improvements, but it may not be possible because of the hard constraints of environmental protection.

"Printing and dyeing industry's environmental protection transformation is easy to say, but it is by no means a simple device, it can be completed by a partial transformation." Zhang Shuming, deputy chief engineer of VR group Limited by Share Ltd, has visited the company and marveled at the systematic reuse of resources and energy treatment. "More importantly, there is a lot of investment in energy conservation and environmental protection, but now enterprises only focus on short-term benefits, and rarely focus on long-term goals."

Since its establishment in 1997, the investment of mutual textiles in environmental protection and energy saving has exceeded 60 million US dollars. Such a scale of investment in environmental protection is very few in the textile industry. There is also a dispute about "burning money". But the performance of mutual textile in Hong Kong stock for 10% consecutive years is obvious to all. "I invest money in order to save money, and I get all the heat in the trench. Facts have proved that energy saving and emission reduction are well done, and the cost is lower. Why can't you make money? "Yin Huilai, chairman of the board of mutual Textiles Holdings, counted out a few accounts.

The upgrading of low bath ratio dyeing technology has greatly improved the dyeing water ratio, and only 3 years have recovered the cost. The water consumption has been reduced by 50%, the steam consumption has been reduced by 50%, the auxiliary consumption has been reduced by 40%, and the source reduction has been achieved.

　　 Printing and dyeing workshop The transformation of the heating valve is equivalent to wearing 3000 thermal insulation clothing for the valve. The investment of 220 thousand yuan will be returned in 2 months, and more than 2000 tons of standard coal can be saved in one year.

The sewage discharge heat and cold separation system and the heat waste heat recovery system can reuse the heat energy in the traditional waste water, recover the investment in 4 months, save 200 thousand yuan in the first year, and save 1 million 800 thousand yuan last year.

Build a sewage treatment plant and use membrane infiltration technology to reclaim the recycled water. The daily sewage treatment capacity is 40 thousand tons, and the COD direct discharge is only 40 mg / L to 50 mg / L, which is only half of the national standard. It can save 3 million to 6 million yuan a year, and can reduce COD400 tons per year. After treatment, reclaimed water can also be used for 100% times.

"After the environmental protection transformation, the product quality is better, and the production efficiency can also be improved." Yin Huilai said that the key part of dyeing and printing is dyeing, and the dyeing is not successful, and the water and materials are wasted. Moreover, the fabric is soaked in water for a long time, and the fabric is not good. Through the upgrading and upgrading in recent years, compared with 2008, the coal consumption per unit product standard of enterprises decreased by 27.1%, the water consumption per unit product decreased by 59.4%, and the success rate of the product increased from 65% to 98%, the per capita output value increased by 109.9%, and the per capita profit and tax increased by 77.4%. In 2014, "Energy saving and emission reduction do not lose money. Instead, it becomes our competitiveness to adapt to the new normal economic situation."