How does water "live" - ??Anhui Chaohu experience

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Online real name: Southeast Online 2006-06-24 16:18:57

Chaohu, located in the central part of Anhui Province, is the "city center" of Hefei and Chaohu. Mother Lake". In the new historical period, people's understanding of Chaohu Lake continues to deepen. Decision makers in Hefei and Chaohu cities have regarded the construction of "Chaohu economy" as an important issue for future development. The "Eleventh Five-Year Plan" of both cities has drawn a grand blueprint for the protection and development of Chaohu Lake.

The reporter recently went to the areas around Chaohu for interviews, and indeed saw a new scene——

Scientific use of thinking to bring life to life

Wanwei Chemical is a subsidiary of Chaohu City One of the two listed companies, it was also a well-known major producer of sewage and waste residue in the past. The calcium carbide waste residue generated by its production of PVA has been accumulated for more than ten years and has piled up a hill in the factory area. When it rains, the waste will flow into Chao Lake with the rain. From the day Wanwei started construction, the people around them were watching them closely, fearing that the sewage and waste residue discharged from the factory would pollute Chaohu and affect their lives.

Production continues to expand and benefits increase year after year, but the leaders of Wanwei Group are a little worried: the increase in waste residue will bring more and more harm to Chaohu.

How can these mountains of calcium carbide waste be utilized to not only eliminate pollution to Chaohu Lake, but also bring new economic growth points to enterprises? In 2001, the leaders of Wanwei Group decided to invest in building a cement plant next to the waste slag heap.

On June 5, the reporter saw in Wanwei that a big hole had been dug out of the waste residue mountain. "There is almost not enough waste residue. The scale of cement production is still expanding. We are now starting to We bought coal ash from outside," a staff member told reporters.

"The benefits of cement are becoming more and more obvious. At present, the total output value of cement has reached 600 million yuan, and the cost has been recovered. Now cement has become our main product." Wanwei Group Party Committee Work Department Minister Wang Zhengjiang said. "This is all forced out. Enterprises are also responsible for protecting Chaohu Lake!"

It has not only increased income but also protected Chaohu Lake. The development of circular economy has enabled Wanwei Group to realize the goal of protecting and utilizing Chaohu Lake. A "win-win" situation. Along the way, the reporter saw that the use of ecological models to engage in agriculture and aquaculture is also proceeding vigorously in the rural areas around Chaohu Lake, and has achieved good economic and social benefits.

First "give" and then "request", the concept becomes active

Nowadays, people's concept of using Chao Lake has changed: before making a fuss about Chao Lake, they will think about whether it can protect Chao Lake. , whether the sustainable development of Chaohu can be achieved. If you cannot do this, never ask for it from Chaohu.

The bidding document for Hefei Binhu New District clearly states that environmental protection of Chaohu Lake is the primary principle of the new district planning. In order to reduce the environmental pressure of the development of the chemical industry on Chaohu, Hefei City has recently completed the overall plan for the development of the city's chemical industry park, and plans to relocate chemical enterprises located in the urban area to the east of Cuo Town, Feidong County.

In order to protect the environment, Chaohu City has rejected more than 80 investment projects, totaling 900 million yuan.

Wang Zhengjiang, director of the Party Committee Work Department of Wanwei Group, said with emotion: "The circular economy brings not only economic benefits, but also a new concept. As long as you understand sustainable development and use and protecting natural resources are no longer contradictory.”

The change in concepts has enabled the wealthy lakeside people to understand that they should use ecological means to feed back Chao Lake. After Yicheng Town and Dawei Township in Baohe District, Hefei City became rich through rural tourism, they planted nearly 20,000 acres of ecological forests and used the Chaohu tidal flats for afforestation and greening. Now they have a length of 4.5 kilometers and an area of ??500 acres. of wave-proof forest belt.

Diversion of rivers into Chao Lake to revitalize stagnant water

Due to the overflow of industrial wastewater and domestic sewage in cities and towns, the loss of chemical fertilizers from farmland, and the serious water and soil erosion in the Chao Lake Basin, Chao Lake itself has poor water exchange capacity. Chaohu Lake pollution has become a serious problem in recent years.

The reporter learned that the "River Diversion to Chao" project included in Anhui Province's "Eleventh Five-Year Plan" has been launched recently. This project is an important part of the "River Diversion to Huaihe River" project The component is to divert water from the Yangtze River from the Baidang Lake Gate or Songyang Gate in Anqing City, upstream of Chao Lake, through the Luochang River or Kongcheng River respectively through the Qiling section and then enter Chao Lake from the Baishi Tianhe River or Zhaohe River to increase the water exchange in Chao Lake. quantity and improve the water environment of Chaohu Lake. This project will improve the water exchange capacity of Chaohu Lake, turn "dead water" into "living water", greatly improve the water quality of Chaohu Lake, and also ensure the domestic and agricultural water needs of Chaohu City, Hefei City and other areas in the Chaohu Lake Basin during severe droughts.

Many people may not think that fish such as silver carp and catfish play an important role in the pollution control of Chaohu Lake. A recent survey showed that the silver carp and fish released into the lake by Chaohu City for three consecutive years have eaten up two-fifths of the total cyanobacteria in Chaohu Lake. Biological manipulation has achieved remarkable results in controlling pollution in Chaohu Lake.

According to reports, under the circumstances of rapid economic growth during the "Tenth Five-Year Plan" period, the Chaohu Basin's pollution control work has achieved certain results: the total amount of pollutant discharge has decreased year by year, and the water quality of the basin has improved. There are currently five sewage treatment plants in the Chaohu Basin, with a daily treatment capacity of 535,000 tons. Last year, the water quality compliance rate of drinking water sources in the Chaohu Basin was 97%.

Various measures have been taken to protect Chaohu Lake, and the ecological environment of the Chaohu Lake basin has been greatly improved.

No wonder Zhang Binghua, an old man who was planning to go fishing in the lake after the fishing ban, happily told reporters: "The water in the lake has improved in recent years, and the fish are much easier to catch."

[Source: Economic Daily]