Title:
TREATMENT OF HIGH WATER CONTENT DREDGING SLUDGE
Document Type and Number:
Japanese Patent JP3723625
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for rapidly and economically treat a large quantity of high water content sludge accumulated on the bottom of lakes and marshes, rivers or the shore of a harbor and a treatment method not generating land subsidence and not limiting the use of a landfill site.
SOLUTION: In a treatment method adding a flocculant to high water dredging sludge to form floc and subsequently draining water by natural or mechanical dehydration, at first, a solidifying material is added and, next, the flocculant is added to form floc including solidifying material particles. Alternatively, at first, nonionic or anionic polymeric flocculant is added and, next, a solidifying material serving as an inorg. flocculant is added and, further, if necessary, the inorg. flocculant or a cationic flocculant is added to form floc including solidifying material particles.
Inventors:
Nobuo Kato
Mitsuaki Seo
Satoshi Sato
Hiroyuki Nishimura
Seiichi Sato
Abe Katsuhisa
Mitsuaki Seo
Satoshi Sato
Hiroyuki Nishimura
Seiichi Sato
Abe Katsuhisa
Application Number:
JP8107396A
Publication Date:
December 07, 2005
Filing Date:
April 03, 1996
Export Citation:
Assignee:
Tell Night Co., Ltd.
International Classes:
B01D21/01; C02F1/56; C02F11/00; C02F11/14; (IPC1-7): C02F11/14; B01D21/01; C02F1/56; C02F11/00
Domestic Patent References:
| JP59147700A | ||||
| JP58150500A | ||||
| JP50081963A | ||||
| JP7032000A | ||||
| JP51070961A | ||||
| JP6055199A | ||||
| JP61086992A |
Attorney, Agent or Firm:
Nao Okuyama
Masao Takeda
Akiyama Noburi
Arihara Koichi
Shoichi Okuyama
Masao Takeda
Akiyama Noburi
Arihara Koichi
Shoichi Okuyama