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Shaoxing Dyeing Enterprises Use Biochemical Technology To Reduce Sludge Production

2013/12/18 11:23:00 112

ShaoxingSludgeEnergy Conservation And Emission Reduction

< p > strike against printing and dyeing sludge is very important, but the key is to reduce sludge production from the source. Recently, from Shaoxing, Zhejiang, it has been learned that since Shaoxing has vigorously promoted the operation of printing and dyeing sludge, many a href= "//www.sjfzxm.com/" printing and dyeing enterprises are now upgrading technology, reducing sludge production in various ways. < /p >
< p > this summer, there have been many incidents of dyeing and printing sludge in Shaoxing. In the vicinity of Shaoxing Lixin dyeing and Printing Co., Ltd., I don't know who had stolen several piles. Shaoxing environmental law enforcement officers conducted a survey of the company, which made the new printing and dyeing feel wronged. Subsequently, the company installed monitoring equipment, monitoring the surrounding environment around the clock, determined to catch the black hand who stole the sludge. < /p >
< p > the reason why Lixin dyeing and printing is to be named oneself is because they have been committed to the research on the reduction technology of < a href= "//www.sjfzxm.com/news/list.aspx ClassID=101112107107" > printing and dyeing sludge < /a >, and the effect is very good. At present, the company produces about 40 tons of sludge every day, and then reduces it by half after drying. In the past, the company would put sludge in the boiler and mix it with coal for combustion. However, the sludge is not thoroughly burned, and about 5 to 10 tons of sludge dried every day can not be solved. < /p >
< p > in order to digest these sludge, Ye Guojian, deputy general manager of Lixin dyeing and printing company and technicians studied in depth. They found that the sludge was evenly distributed and mixed with coal before burning, which wasted coal and sludge. According to the principle of fluidized-bed, they test the drying sludge which has just dried the calorific value of 2800 kcal with residual temperature, and directly carries out spraying and incineration in the middle temperature zone of the furnace directly under the automatic control of the mechanical equipment. In this way, 20 tons of dry sludge per day will only be sent to 5 million kcal boilers and will be completely burned. The practice of "new printing and dyeing" has attracted many colleagues' attention. These days, many printing and dyeing enterprises nearby come to pick up the classics. < /p >
< p > in the same area, Zhejiang Qing Mao textile printing and dyeing Co., Ltd. also practise in this respect. As early as 2011, the company was listed as a "coal to gas" pilot by the municipal government. Since then, the company has gradually converted the fuel from the three major heat transfer oil boilers to natural gas. In addition, the company has the only three largest steam boilers in the city, which belong to the thermal power plant boiler, not in the "coal to gas" range. All along, the company has used these three steam boilers to incinerate sludge. < /p >
Yu Jianliang, deputy manager of Qing Mao textile printing and dyeing company, said that from this month, they began to deliver 15 tons of sludge daily to central recycling Energy Developments Ltd in accordance with the "five unification" plan. < /p >
< p > according to the relevant person in charge of solid waste center of Shaoxing Environmental Protection Bureau, biochemical methods are effective ways to reduce printing and dyeing sludge at present. At present, most printing and dyeing enterprises in Shaoxing begin to reduce sludge production by adopting < a href= "//www.sjfzxm.com/news/list.aspx ClassID=101112107105" > biochemistry < /a > in the production process. However, according to their actual conditions, enterprises generally consider the cost and determine the proportion of sludge treated by biochemical methods. < /p >
Enterprises without p upgrading and upgrading without technological innovation often face a situation of shutting down. According to the Municipal Commission, most of the 19 printing and dyeing enterprises that closed in 2013 were unable to meet the rectification requirements because of the environmental protection facilities of enterprises. < /p >
< p > according to the relevant person in charge of solid waste center of Shaoxing Environmental Protection Bureau, next year, urban "coal to gas" is basically completed. At that time, enterprises do not have sludge burning boilers. < a href= "//www.sjfzxm.com/news/list.aspx? ClassID=101112107108" > sludge treatment < /a > will be transported to central recycling Energy Developments Ltd according to the agreement, which greatly reduces the possibility of stealing. < /p >
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