xinhuanet.com Lanzhou in April 13, Professor, Beijing Normal University Research Institute of water sciences, national environmental emergency experts group members Wang Jinsheng said in Lanzhou, preliminary judgment, Lanzhou tap water in the benzene from Lanzhou Petrochemical 80's of last century after leakage accident happen into underground contamination.
4 month 11 days, Lanzhou discovered water benzene exceed the standard event. To participate in the work of investigating the incident Wang Cheap Georgia Bulldogs Jerseys Jinsheng recently when accepting a reporter to interview, Lanzhou tap water from the the Yellow River River, Lanzhou Veolia Water (Group) Co. Ltd. the first water to second water plants have an approximately self ditch 3 kilometers, and the Yellow River are all from the west to the East, the south is Lanzhou Petrochemical flow channel. The access to information is found, the enterprises in the 80's of last century, there had been some accident, some organic material with the groundwater seepage into the ground, from high to low motion. And gravity flow channel depth of four or five meters, and in the water downstream, blocking the movement of ground water, flowing groove side forms the groundwater Residence District, preliminary judgement is Cheap Houston Cougars Jerseys the retention area containing benzene water into the flow channel.
however, gravity flow channel why only now benzene pollution? Wang Jinsheng explained, gravity flow channel is the cement structure, every Cheap Southern Miss Golden Eagles Jerseys once in a while there is a contraction joint, after flowing groove design life of the shrinkage joint, aging, Cheap Mississippi State Bulldogs Jerseys retention area of benzene in the groundwater by the contraction joints into the flow channel, and the pollution to the water quality.
Wang Jinsheng said, now in the gravity near the ditch is about one meter found deep underground sewage waste oil, but its composition need further testing. Cheap Louisiana State University Jerseys
Before, Lanzhou city environmental protection departments that Lanzhou Petrochemical a pipeline leak, pollute the self channel number 4 line, leading to the benzene exceed the standard.
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