Shaoxing Textile Industry First Implements Carbon Fiber Water Entry Decontamination

The scene saw that the construction workers used piles of bamboo around the inner lake.

Bamboo piles play a regular role because carbon fibers are about 1 meters long and sink into the water.

String string them up and fix them on bamboo posts.

Decontamination targets: inferior five types of water turn into five types of water.

The sewage from Xinghu district mainly comes from the domestic sewage of the surrounding residents.

Monitored by the environmental monitoring station of Shaoxing County Environmental Protection Bureau, its recent water pollution is more serious. The COD concentration reaches 110 mg / L, turbidity is 28.7 mg / liter, and total nitrogen and total phosphorus are all above five kinds of water.

At the same time, the water body of the Nei Hu Lake has been seen as green, showing signs of blue-green algae outbreak.

According to the construction plan, the goal of carbon fiber purification water quality project is to improve the water quality of the inner lake, reaching five kinds of water standards.

Specific indicators include COD concentration decreased to 40 mg / L, ammonia nitrogen, total nitrogen below 2 mg / liter, total phosphorus below 0.4 mg / litre and so on.

Technology Decomposition: similar eco cloth decontamination mode

Last year, Shaoxing County Water Technology Station promoted the use of "ecological cloth" to purify water quality in five Fung village aquaculture households in Hutang street.

The method is to immerse cloth in water and make it a breeding ground for beneficial microorganisms.

The use of carbon fiber is similar to that of ecological cloth.

The difference is that it consists of two parts: the ecological floating island process and the carbon fiber contact oxidation process.

The technology of floating island is to plant plants on the surface of the water bed and absorb the pollutants in the water by using plant roots.

At the same time, the microorganisms attached to the roots of the plant degrade pollutants in the water, thus effectively repairing the water body.

The process of carbon fiber biological contact oxidation is to use water treatment materials (carbon fiber) as biofilm carrier in polluted water, and utilize the activities of microbial metabolism on the biofilm carrier to achieve the degradation and absorption of organic matter in sewage.

According to the construction data, this eco carbon fiber is a new environmental protection material jointly developed by Beijing University of Chemical Technology and Zhejiang Xin Zhi Ball Technology Development Co., Ltd.

The experimental results showed that the removal rate of COD was higher than 80% after the deposition of eco carbon fiber, and the removal rate of ammonia nitrogen was more than 40%.

Its sewage purification performance is better than that of Japanese carbon fiber ecological grass and acacan ecosystem base in the United States, reaching the international advanced level.

At last year's appraisal meeting of scientific and technological achievements, the experts attending the meeting were affirmed.

A fly in the ointment: the cost is a little high.

The comrades of the Shaoxing River and Lake Management Bureau, who introduced the technology, told reporters that the lake area of Xingyue district is about 20 mu, and its storage capacity is about 35 thousand cubic meters. The total investment of water purification works is about 250 thousand yuan.

According to the data, the life of eco carbon fiber material can be up to 5 to 10 years.

If calculated according to the 6 year standard, the annual cost of decontamination is equivalent to about 2000 yuan per mu, which does not include the cost of future maintenance.

The "ecological cloth" introduced by Shaoxing water technology station has an average cost of about 400 yuan per mu per year.

Even such a price, aquaculture households use enthusiasm is not high, the need for government support in order to promote.

At present, the county uses the "ecological cloth" to control the water quality, which adds up to only forty or fifty mu.

In addition, using carbon fiber to purify the water body is more suitable for static water and is not suitable for rivers with relatively fast flow.

This year, they are also trying to introduce, and whether it can be popularized in the whole county, the key depends on the effect.