Biochemical Treatment Of Sewage Into Printing And Dyeing "Meritorious Service Minister"
Because of the "double control" of sewage, many printing and dyeing Production is limited and pressure is increasing. But Xinyu dyeing and printing plant, located in Lizhu Town, Shaoxing, Zhejiang, is still full load.
"Thanks to the biochemical treatment process which was introduced earlier last year, the sewage concentration has been reduced in advance, so the new sewage policy will not affect us."
The person in charge of the enterprise said.
Lizhu town is a famous knitting town in China.
Fabric
Such as knitting and dyeing.
It is understood that 8 printing and dyeing enterprises have embark on printing and dyeing biochemical treatment process in 12 printing and dyeing enterprises above designated size.
Compared with the traditional process, the printing and dyeing enterprises such as Li Zhu's biochemical process, the sewage volume is obviously reduced, and the sewage concentration is obviously reduced.
It is understood that in May last year, Xinyu dyeing and printing plant invested nearly 5 million yuan on the basis of the original physicochemical treatment, and adopted biochemical technology to build a sewage treatment pond covering an area of about more than 1300 square meters. The daily sewage capacity reached 5000 tons, which has been put into operation in June this year.
In the same capacity and product quality unchanged, in June this year, the COD concentration in the printing and dyeing wastewater of the company was controlled at 400mg/l, which was 1 times more than that of last month.
"There is also a downward trend, and the COD concentration has dropped to 380mg/l in July."
The company's personnel said.
Because of this, the production of industrial waste water in Shaoxing was raised to COD 500mg/l concentration, and the production of Xinyu dyeing and printing plant was not affected at all.
Biochemical treatment process is adopted to achieve energy saving and emission reduction.
Dyeing and weaving in Tai Wan
The company has also tasted the sweetness of early emission reduction and early action.
"Big bay dyeing and weaving" Lizhu town is the first company to adopt "jet aeration biochemical process and equipment". As early as the end of 2009, the treatment of 5000 tons of sewage biochemical treatment project has solved the problem of "Tai Wan dyeing and weaving" sewage disposal.
"Running two years ago, the COD concentration in the company's sewage is controlled at 300mg/l, which makes the focus of the enterprise more on product upgrading and filing.
It is reported that this year, the company not only in the summer and light season business is not light, and printing and dyeing processing fees have also been successful in raising prices.
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