Resource process for percolation liquid of city life garbage landfill
Title：
Resource process for percolation liquid of city life garbage landfill
Application Number：
 200410098947
Application Date：
 2004/12/17
Announcement Date：
 2005/08/03
Pub. Date：
 2006/10/11
Publication Number：
 1648075
Announcement Number：
 1278962
Grant Date：
 2006-10-11
Granted Pub. Date：
 2006-10-11
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C02F 9/14, C02F 3/28, C02F 1/44, F23G 7/04, C05F 9/00
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Nie Yongfeng, Xu Yudong, Yue Dongbei
Key Words：
 Resource process, percolation liquid, city life garbage, landfill
Abstract：
 The technological process of utilizing percolation liquid from domestic garbage landfill belongs to the field of garbage treating technology. The present invention aims at raising the percolation liquid treating level to reach the exhaust standard. The technological process of utilizing percolation liquid from domestic garbage landfill includes the following steps: 1) pumping the percolation liquid to the first stage of ultrafiltering system and treating in pressure difference of 0.3-0.5 MPa, 5-10 times concentration and membrane separation to obtain the first stage of concentrated liquid; 2) pumping into the second stage of ultrafiltering system and treating in pressure difference of 1.0-1.5 MPa, 4-5 times concentration and membrane separation to obtain the second stage of concentrated liquid; and 3) treating in immersing, burning and evaporating system at burning temperature over 750 deg.c, immersing depth 0.3-0.6 m and 5-10 times concentration to obtain liquid organic fertilizer.
Claim：
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PCT：
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
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