How does the regenerated water become new lifeblood in the

How does the regenerated water become new lifeblood in the city?
Staff reporter Guan JingJing

Beijing utilized nearly 3,360 million cubic meters of regenerated water totally in 2000 - 2010, it was equivalent to 1680 pieces of water yield of Kunming Lake, also approach the total water consumption of the whole year in Beijing of 2010. The regenerated water becomes the indispensable, stable and reliable new source of water in Beijing. Please pay close attention to - -

One Sunday in August, live in Tong Zhou District in good taste Mr. Wu that occupies of Beijing to come to management office of the property, he wants to ask if the normal water in the Residential Area has been opened. After getting the answer that is denied, Mr. Wu is a bit disappointed. "Beijing lacks water in this way, can or hope for the open normal water of breakfast. "

In Beijing, what is more and more ordinary citizens like Mr. Wu understood water resource is in short supply, and use the regenerated water to already become a part of more and more people's life.

Water of regeneration that is seen everywhere

The glistening light of waves of lake surface of the Olympic Green is clear, a pond of green water all come from the regenerated water plant of north brook beyond several kilometers; The rubbery dam of cold water river of Tong Zhou District, the clean and limpid water of regeneration plans to flow into the farmland of the low reaches at any time; Also 8.5 generations of lines factory in the east of Beijing of the village, the coming from the regenerated water with water of 85%, Chaoyang District China spins and exchanges the Residential Area of the city, every household all wash the lavatory with the regenerated water

The regenerated water is so-called " The normal water " ,Mean the sewage reaches certain water quality index, meet a certain instructions for use after dealing with appropriately, can carry on the beneficial water that used. Adjust water to compare with desalinization, across the basin, the regenerated water has obvious advantages. More important, the regeneration of sewage contributes to improving the ecological environment, realize ecological benign cycle of water.

A lateral thinking done in childhood just as us: What washes the dirtier? You will certainly know the answer is water. Will become dirty if use, this is a characteristic of water, and because uses are different, the composition is complicated, bacteria are numerous in water which become dirty.

How that urban drainage pipeline hit water lower than Grade V " Turn into the body " Is it water of clean usable regeneration?

Traditional sewage handling is mainly to put up " precipitates the pool " with the cement around the rivers lake ,Filter and discharge through simple physics. This kind of building construction mode can't guarantee the water quality of the regenerated water. With the constant expansion of the regenerated water use, the requirements for water quality are higher and higher.

Vice section chief Xiong JianXin in the water drainage place of affair office of water of Beijing tells Science and Technology Daily reporter: "Demand to deal with all sewages deeply now, introduce the treatment technology of membrane, also adopt the living beings to strain the pool, ozone to sterilize etc., popularizing. "

The recycling after sewage disposal

" with the membrane bioreactor (MBR) It is that the most advanced water of regeneration at present handles the craft to separate technology for representatives' membrane deeply. " GE Chinese research and development centre senior researcher Xiong RiHua introduces to Science and Technology Daily reporter, "hundreds and thousands of appearance like noodles in put on sewage membranes empty and fibrous, utilize function of the microorganism to decompose and purify the sewage. And each ' noodles ' is an accurate filter in fact, all stop mud, tiny particle, bacterium and virus,etc. except noodles, the clean water after filtering passes the central purpose-built tiny passway of ' noodles ' and carries on recycling after collecting summary. "

Yellow rosy clouds introduction of chief of Institute for Environmental Research to water of environmental institute of Tsing-Hua University, MBR one kind separates technology and traditional sewage of membrane and carries out a biological disposal upon craft organized new high-efficient sewage disposal and recycling craft. It utilize choice that membrane separate see through and efficiency, utilize validity and completeness that carry out a biological disposal upon, remove the harmful substance in water to the maximum extent, the treated sewage water quality is limpid, organic matter content extremely low, can direct the recycling.

Compared with traditional sewage disposal craft, the biggest characteristic of MBR uses the membrane assembly instead of precipitating the pool, group device soaks the membrane in biochemical pool directly, the mixed solution separates the firm liquid through the membrane in the biochemical pool. "Replace two in the traditional active mud craft and sink the pool with the membrane assembly, can separate the high-efficient firm liquid, overcome traditional active the intersection of mud and craft produce water water quality enough for stable and mud apt to swell insufficient. " Huang Xia says.

"Membrane bioreactor system excellent to produce ink water quality, can meet most recycling requirements. Mend occasions that expects extremely much of water quality of recycling such as water,etc. as to some original water or similar boiler containing high percentage of salt, can further use other more meticulous membrane such as reverse osmosis and separate technology. " Xiong RiHua says.

Xiong Jian introduces newly: "Most early membrane deal with apparatus, introduce not foreign, there is autonomous innovation too at home in recent years, we begin to popularize progressively too. If out of order because of the fittings of the key equipment, the foreign products are not easy to purchase. "

The scientific and technological Limited Company of the green source of water of Beijing established in 2001 relies on the advanced technology that researches and develops independently, have already finished the regenerated project of water plant in Beijing Miyun, the wild geese of Huairou of Beijing perches over thousands of MBR sewage recycle treatment projects such as the improvement project of sewage treatment plant, soup river mouth Town sewage recycle treatment project.

Regenerated water conservancy is used and still needs to expand

The annual consumption of water of regeneration of Beijing of 2010 has already been up to 680 million cubic meters, the majority has been used for using water rich and influential family. At present industrially, 9 heat and power plants produce cooling water and already all use the regenerated water; Agriculture used 300 million cubic meters of regenerated water last year; The intersection of the whole city and overth lake, park, already regenerated water as mend the intersection of water and source mainly 70% more than urban river.

But the normal water closely linked with ordinary citizen uses seem barely satisfactory. There are normal water pipelines in though some newly-built Residential Areas, but the normal water is obstructed slowly. Wash the car and popularized and has not started all the time either.

This is that the ordinary people accept the question of the intensity at first. Xiong RiHua thinks: "It is used in the resident domestic water on large scale that the regenerated water is difficult, and accepted the restricting of intensity by the masses in consideration of security mainly. "

Institute Professor Liu GuoDong of hydroelectric project of the water conservancy of university of Sichuan has expressed the same worry too: "A lot of private enterprises get involved in sewage disposal now, sometimes the normal water may not be up to standard of, have some taste, there may be difficulty to popularize in resident's life by a large scale. "

It is that one restricts the factor that it is higher and the normal water pipe network lays the expenses run.

As to this, Xiong Jian shows newly, the pipe network lays and serves main users directly, " should pave in the river first, used for supplementing the river and using water directly. Secondly should lay to the factory, supply the big users of water for industrial use. The third is given municipal administration, is used in municipal administration and garden and use water. " This is likewise in consideration of scale merit.

"There is normal water device in a lot of new Residential Areas, but can not use, run economic questions such as fee, administration expense,etc. inside, also there is problem of management, there should be a set of effectual methods and but not let the developer and economic lever of the property work. " Director of Chinese Academy of Sciences Water Resource Research Center Professor Xia Jun says to Science and Technology Daily reporter, "can't all things speak by money, want, try every possible means from system, good experience of Residential Area study and popularize, the normal water will play and act on to make good use of greatly in saving the water resource. "

"We are making great efforts to expand the scope of application of the regenerated water, and deal with the regenerated water deeply, use factory's water quality to further improve, reach water standard in the earth's surface. The plan was in 2015, the water consumption of the regeneration of Beijing should reach 1 billion cubic meters, account for nearly 1/3 of total water consumption in the whole city. " Water Deputy Bureau Director of affair office, press spokesman Bi Xiao in Beijing just said.

How does the regenerated water become new lifeblood in the city?