Relieve water stress, reclaimed water becomes Beijing's new water source-【3M filter element】

Relieve water stress, reclaimed water becomes Beijing's new water source-reclaimed water, reclaimed water reuse u003cbru003eBefore the National Day this year, the 'Four Lakes and One Line' project on the Yongding River in Beijing was completed and opened to tourists. The trees are verdant and blue waves are rippling. Previously, the Beijing section of the Yongding River had been dry for 30 years. u003cbru003e 'It can be said that reclaimed water makes it come back to life.' Deng Zhuozhi, deputy chief engineer of Beijing Water Resources Planning and Design Institute, said that the project uses reclaimed water recycling technology, plus the favor of 'heavenly waterThe water input is 5.64 million cubic meters. u003cbru003eAccording to statistics, in 2010, Beijing's reclaimed water consumption has reached 680 million cubic meters, accounting for 19% of the city's water supply. Reclaimed water has become Beijing's second largest water source. u003cbru003e 1,000 cubic meters per capita is an internationally recognized water scarcity warning line. The per capita water resources of 100 cubic meters have long made Beijing one of the major cities in the world that lack water. u003cbru003e 'For 12 consecutive years of drought, rapid economic development, and increasing population, Beijing will usher in a historically difficult period of water use in the next five years.' Nie Yuzao, party secretary of the Beijing Municipal Water Affairs Bureau, said frankly. u003cbru003e 'Under this situation, Beijing is focusing on sewage.' According to Pan Anjun, deputy director of the Beijing Municipal Water Affairs Bureau, according to the traditional model, sewage is waste water and flows into the downstream river after it is used up. There is no replenishment to ask for, this kind of water use mode of 'moving water' must be changed and the water must be circulated.' u003cbru003e After 2008, the Beijing Municipal Government and related enterprises invested 5 billion yuan to upgrade and renovate 8 reclaimed water plants in the urban area, including Qinghe, Jiuxianqiao, Wujiacun, and Xiaohongmen; as corresponding supporting projects, the total investment The construction of a 3.2 billion yuan drainage and reclaimed water supply network is also in full swing. u003cbru003e At the same time, in order to promote and encourage the use of recycled water, Beijing has maintained the price of recycled water at RMB 1 per cubic meter for many years, and users who use recycled water are exempt from water resource fees and sewage treatment fees. According to estimates, according to the current process, the treatment cost per cubic meter of recycled water is 2.5 yuan. For this alone, the government needs to invest hundreds of millions of yuan in subsidies every year. u003cbru003e 'Since 2004, Beijing has officially incorporated reclaimed water into the city's unified water resources deployment, which is equivalent to including it in the'financial budget.' Reclaimed water is no longer dispensable, but becomes the main source of water,' Pan Anjun said. u003cbru003e As of 2010, Beijing's industrial use of recycled water reached 140 million cubic meters, accounting for 20% of the total utilization. The ratio of agricultural water and landscape water was even more alarming, reaching 47% and 30 of the total utilization, respectively. %. In the urban area of u200bu200bBeijing alone, 70% of the water systems use recycled water, restoring the ecological health of rivers and lakes. u003cbru003e Not only that, the use of recycled water is also seen everywhere in daily life. At a car wash shop on Chengshousi Road, Sun Xing, a worker, told reporters: 'The recycled water is transparent and tasteless, and the car wash is still very clean, and the price of water is cheap, which customers appreciate.' u003cbru003eHowever, there are also surveys that show that most provinces and regions across the country have limited capacity to produce and utilize reclaimed water, with an average utilization rate of less than 10%. u003cbru003e Pan Anjun calculated an account: In 2010, Beijing’s new water supply was about 1.56 billion cubic meters. If it is used once and discharged, the water volume is only 1.56 billion cubic meters; after deducting normal losses, if it can be Among them, 80% is collected and used and used again, which is equivalent to an increase of 0.8 times the amount of water; the third and fourth use can be carried out next. It can be seen that there is still a lot of room for the development and utilization of recycled water in Beijing. u003cbru003eAccording to a survey of 100 industrial enterprises by the Beijing Municipal Commission of Economy and Information Technology, Beijing still has nearly 70% of its industrial wastewater resources available for development and use. If these waste water resources can be effectively recycled, the industry's fresh water consumption can be reduced by tens of millions of cubic meters. With the gradual advancement of the 'retreat from the city to the district\u003cbru003e Shao Yisheng, vice president of the China Urban Planning and Design Institute, said that the current international investment in sewage treatment is generally similar to that in water supply, and China is far from reaching this level. This requires strengthening planning at the government level, gradually adjusting the imbalance of water prices, and increasing investment in sewage treatment. In addition, awareness of private business and public participation is also very important. u003cbru003e Industry insiders also pointed out that government construction and subsidies cannot fully cover the large number of 'self-sufficient' small reclaimed water utilization models. Problems in cost control and water supply stability have affected the benefits of decentralized utilization. Some experts suggest that the price of reclaimed water should be appropriately increased to make the investment in reclaimed water truly profitable, and to realize the transformation of reclaimed water reuse from 'industry' to 'industry'. u003cbru003eReclaimed water, middle water reuse u003cbru003e u003cbru003eHigh-quality article recommendation: u003cbru003eIntroduction to the functions of various levels of filter elements for household RO reverse osmosis water purifiers