China News Service, Handan, March 30th (Wang Tianyi, Chang Lingshan) "In 2021, our park will produce 2.1 million tons of water, all of which will be reclaimed water from Ming Lake." On the morning of the 30th, in Yongnian Fastener Industrial Park Inside, Wen Jiateng, the head of Hebei Hengchuang Environmental Protection Technology Co., Ltd., told a reporter from Chinanews.com that these reclaimed water entered the fastener galvanizing workshop in the park, and after participating in production links such as degreasing and rust removal, it underwent physicochemical, biochemical, and security reactions. The process reaches the national sewage discharge standard again, and after layers of purification, it finally becomes the water source of Ming Lake.

　　Yongnian District, Handan City, Hebei Province, where the Standard Parts Park is located, is known as the "Fastener Capital of China". After decades of development, it has become a characteristic industrial cluster with an annual output of over 4.6 million tons and an output value of over 30 billion yuan. .

　　However, with the rapid development of the fastener industry, millions of tons of industrial wastewater generated every year have become a "water burden" that the local environmental protection department has to face.

　　Yongnian District is located in the southern part of the North China Plain. It is arid and has little rainfall. The two seasonal rivers passing through the area are depleted all the year round. For a long time, industrial and domestic water has been drawn from groundwater, resulting in over-exploitation of local groundwater.

　　How to not only deal with the "water burden", but also solve the "water trap"?

Yongnian District set its sights on Ming Lake on the east side of the city.

The newly built sewage treatment plant in Yongnian District of Handan City can treat 40,000 cubic meters of sewage per day.

Photo by Chen Jiansha

　　Minghu Lake is the flood mitigation area of ​​the Yongnian section of the Ming River. It covers a total area of ​​3,000 mu and has a flood mitigation volume of 7.62 million cubic meters. Due to the perennial drought, it has gradually become a large garbage pit for waste accumulation.

　　In May 2017, Yongnian District invested 330 million yuan to start the comprehensive treatment project of Ming Lake.

After more than a year of treatment, the first phase of the Ming Lake Ecological Wetland Park was completed and put into use. The lake area reaches 1,000 mu and the water storage capacity is 3.8 million cubic meters. The former garbage pit has become a scenic spot for citizens to play.

　　In order to collect the industrial wastewater generated during the production process of standard parts enterprises, Yongnian District has built a high-end fastener industrial park project with a total investment of 5 billion yuan. The most advanced technology in the industry is used to treat electroplating wastewater. After the water quality reaches the national standard, it enters the urban sewage. Treatment plant for secondary treatment.

　　At the same time, the district has successively invested in the construction of two sewage treatment plants, realizing the complete collection and treatment of urban domestic sewage and industrial sewage.

The wastewater that meets the standard from the sewage treatment plant is purified by multiple treatments, and the water quality reaches the standard water that can be used in water bodies, which becomes the water source of Ming Lake.

　　According to Pang Yuedong, chairman of Yongnian District Urban Construction Investment Group Co., Ltd., after more than three years of accumulation, Ming Lake is now storing 3.6 million cubic meters of water, and 40,000 cubic meters of reclaimed water is collected every day from the sewage treatment plant.

　　In early 2021, standard parts manufacturers and waste-to-energy plants in Yongnian District have successively used the reclaimed water from Ming Lake.

At the same time, the district also extends the reclaimed water pipeline network to various streets and residential quarters in the city.

Today, reclaimed water is being used in landscaping, public toilet flushing, fire fighting, dust control and spraying in the entire urban area.

It is estimated by the water conservancy bureau of the district that more than 13 million cubic meters of reclaimed water will be used every year.

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