To discuss things together and seek common development

On May 8th, the author saw crystal clear irrigation water sprayed out from a dropper pipe and sprayed onto the flowers in the Fayuan Community, Qiaoxi District, Shijiazhuang City. Chen Yunfei, the engineering department manager of the Origin Property Management Office of Hebei Tourism Century Property Development Co., Ltd., told the author that the water is actually treated kitchen sewage.

In the southern part of Fayuan Community, the author saw a reclaimed water treatment station. Chen Yunfei introduced that rainwater from rainwater pipes and kitchen domestic sewage from sewage pipes are collected and filtered here, and then enter the biochemical tank for biochemical treatment to remove odors, kill harmful bacteria, and breed beneficial bacteria, and then use aeration pumps to pressurize. Oxygen is continuously blown into the water to further breed beneficial bacteria. After these processes are processed, it is disinfected. After the processing is completed, it can be stored in a pond for use in drip irrigation of the flowers and trees in the community.

City is an important space carrier for human production and life, and water is an important resource supporting urban economic and social development. From May 9th to 15th this year, it was the 30th National Urban Water Conservation Publicity Week. The theme was "Implementing New Development Concepts and Building Water-Saving Cities".

In recent years, in order to solve the serious shortage of water resources, Hebei Province has taken the creation of a water-saving city as the starting point, guided the city's water-saving work with new development concepts, and coordinated the protection and utilization of water resources, and the recycling of water resources. Obvious results have been achieved in water efficiency, sponge city construction, sewage recycling, and water environment, which have strongly promoted high-quality urban development.

Several tourists were playing in the Minghu Water Ecological Wetland Park in Yongnian District, Handan City. In recent years, Yongnian District of Handan City has paid attention to the restoration of the urban water ecology, implemented comprehensive treatment of the beach wasteland on the south side of Minghe River, and purified the reclaimed water from the sewage treatment plant through multiple organisms and plants to form a wetland park of about 200 hectares. Photo by Du Baihua, Hebei Daily reporter

Explore the water-saving potential of sponge facilities in depth and realize the scientific collection of rainwater resources. Recently, Lei Yanfeng and colleagues of Qian'an City Landscaping Center are repairing and maintaining the reservoirs and rainwater tanks in the landscape project of the green belt on the east side of Binhu East Road to ensure that the pipelines are unobstructed and to welcome the arrival of the rainy season. .

Entering this 26.7-hectare project, three scenic wetlands can regulate the microclimate inside the park, about 20,000 square meters of sunken green space can store nearly 10,000 cubic meters of rainwater, and the planting ditch can store about 675 cubic meters of rainwater. Rainwater, 4 larger reservoirs and 6 rainwater tanks store rainwater and also play a role in improving the runoff control rate within the site. Rainwater is purified, transmitted, and stored through a series of low-impact development measures such as grass-planting ditches, biological retention ponds, and sunken green spaces on the site, and ultimately serves for plant watering and ecological toilet flushing in the park.

As the master key to solving the urban "water problem", the construction of sponge city is a highly professional and complex systematic project. Hebei Province will play the role of the national pilot demonstration of sponge city construction in Qian'an City, deeply tap the water-saving potential of sponge facilities, and realize the scientific collection and utilization of rainwater resources. The province promoted the 8 technological achievements of Qian'an City, and included the sponge city construction reform experience of Qian'an City in the first batch of reform experience catalogues of the Provincial Party Committee Reform Office to promote the construction and development of sponge cities in the province. By the end of 2020, more than 20% of the built-up areas of cities in the province have completed the pilot construction of sponge cities.

On the east side of the southern area of ​​Fayuan Community, Qiaoxi District, Shijiazhuang City, a sign "Climbing is prohibited in the middle water pool" is hung. Photo by Song Ping, Hebei Daily reporter

Strengthen sewage treatment and utilization of tail water resources

Every day, the Fudong Sewage Treatment Plant in Hengshui High-tech Zone not only receives industrial wastewater and domestic sewage from the high-tech zone, but also produces 2500 cubic meters of reclaimed water that can be reused in certain areas.

The reclaimed water utilization project of the wastewater treatment plant uses the effluent (category 4 water) of the wastewater treatment plant as raw water, and after ultrafiltration and reverse osmosis processes, it reaches the standard for reclaimed water reuse. The reclaimed water is currently mainly used for production water, garden greening and road cleaning watering by Hebei CapitaLand Biomaterials Co., Ltd. and CECEP Environmental Energy Co., Ltd.

The person in charge of the Fudong Sewage Treatment Plant calculated an account. The company used tap water for production at 8.84 yuan/ton and reclaimed water at 3.75 yuan/ton. The use of reclaimed water by the enterprise can not only greatly reduce production costs and save water resources, At the same time, it has brought economic benefits to the aquatic products enterprises.

While doing a good job in water conservation and utilization, Hebei Province vigorously carried out urban sewage treatment and tail water utilization, and strengthened the ecological protection of water resources. Since Hebei Province launched the three-year action to improve the quality and efficiency of urban sewage treatment in 2019, a total of 102 direct domestic sewage outlets have been eliminated in cities and cities across the province, and sewage collection and treatment facilities have been eliminated, covering 31 square kilometers of blank areas, and cities and counties have been completed All black and odorous water bodies in the area have been eliminated, drainage and sewage treatment management have been further standardized, and the rate of centralized collection of domestic sewage has been significantly increased.

Strengthen the construction of municipal infrastructure and carry out the protection and utilization of water resources

Municipal infrastructure is the basic framework of a city, and it is also a key facility to ensure the sustainable development of urban water use. This year's Hebei Province's 20 people's livelihood projects include old pipe network renovation, rain and sewage diversion renovation, and urban domestic water source replacement projects, all related to water supply. Through continuous construction of urban public water supply and drainage facilities, the efficiency of water resource utilization is improved and urban production is guaranteed. water for live.

Focus on the problems of "running, running, dripping and leaking" of the old municipal pipe network. Since 2018, Hebei Province has carried out a special action to renovate the old municipal pipe network for three consecutive years, and the water supply pipe network has been transformed to 1503.6 kilometers in three years. Effectively avoid water waste. In order to improve the efficiency of urban domestic sewage collection, Hebei Province has also focused on promoting the transformation of rain and sewage diversion of the urban drainage pipe network in accordance with the requirements of improving the quality and efficiency of urban sewage treatment and drainage and waterlogging prevention. By the end of 2020, the province has completed a total of 3,901 kilometers of transformation.

The urban water source replacement project is the most direct and effective measure for comprehensive management of groundwater overexploitation, and it is also an important measure to improve the level of urban water supply security. In recent years, the water-receiving area of ​​the Middle Route of the South-to-North Water Diversion Project in Hebei Province has paid close attention to the construction of public water supply facilities. 193 urban public water supply plants have been built, with a comprehensive production capacity of 6.13 million cubic meters per day, and a water supply network of 22,000 kilometers and a public water supply network. Coverage continues to expand. This year, Hebei Province plans to expand 5 water plants, build 10 new pumping stations, construct and renovate 622 kilometers of public water supply pipeline network, and realize full coverage of urban river water replacement in the water area of ​​the South-to-North Water Diversion Project.

At present, the 10 water-deficient districts and cities in Hebei Province have all reached the national water-saving city standards. Among them, Tangshan, Langfang, Shijiazhuang, Cangzhou, Qinhuangdao, Hengshui, Xingtai, Handan and Qian'an have been used for housing and urban-rural construction Ministry and National Development and Reform Commission named "National Water-saving City". In the next step, Hebei Province will consolidate the achievements of water-saving cities, encourage county-level cities to declare water-saving cities, comprehensively promote the construction of water-saving cities, and establish a long-term management mechanism. (Hebei Daily reporter Song Ping, correspondent Chen Peng and Cui Weiguang)