The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7470365 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 30, 2008

Filed:

Oct. 11, 2005
Applicant:

Sang Hun Hong, Seoul, KR;

Inventor:

Sang Hun Hong, Seoul, KR;

Assignee:

Ark Co. Ltd., Gyeonggi-do, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 11/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention provides a system for sludge treatment which transfers sludge into a dewatering device while maintaining the sludge density at a predetermined level constant suitable for dewatering the sludge even when the density of the precipitated sludge varies, thus improving the sludge treating efficiency and sludge dewatering efficiency, and reducing the amount of a coagulant to be used. In the system for sludge treatment, a sludge concentration device is installed in a mixing flocculation tank. Thus, the sludge is mixed with the coagulant and flocculated in the mixing flocculation tank to produce flocs and a supernatant, while the supernatant is directly discharged from the mixing flocculation tank. Furthermore, the amount of the supernatant is controlled to maintain the desired density of the flocs to be transferred to the dewatering device. Thus, the dewatering device can be stably operated.


Find Patent Forward Citations

Hong, Sang. (2008). Sludge concentration system which have functions for automatically charging a coagulant and for automatically controlling the concentration of a sludge (U.S. Patent No. 7470365). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7470365

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