continued from part 1 - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION (21) Application No.6335/DELNP/2008 A
(19) INDIA
(22) Date of filing of Application :18/07/2008 (43) Publication Date : 24/10/2008
(54) Title of the invention : "WASTE WATER TREATMENT METHOD USING IMMOBILIZED CARRIER"
(51) International classification :C02F 3/12 (71)Name of Applicant :
(31) Priority Document No :2006-016426 1)KURARAY CO. LTD.
(32) Priority Date :25/01/2006
Address of Applicant :1621, SAKAZU, KURASHIKI-
(33) Name of priority country :Japan
SHI,OKAYAMA 710-0801, JAPAN Japan
(86) International Application No :PCT/JP2007/000028 (72)Name of Inventor :
Filing Date
:24/01/2007
1)BABA, YASUHIRO
(87) International Publication No :WO 2007/086240 2)FUJII, HIROAKI
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
3)OKABE-HIDEHIKO
4)KOBAYASHI, GORO
5)MIURA, TSUTOMU
(62) Divisional to Application Number :NA
Filing Date
:NA
(57) Abstract :
To provide an inexpensive wastewater treatment method which facilitates downsizing of tanks and requires less withdrawal of an
excessive sludge, the use is made of an aeration tank I in which wastewater is contacted with a particulate carrier under an aerobic
condition, and a total oxidization tank 3 in which the volume of a sludge generated in the aeration tank 1 is reduced under an aerobic
condition, a coefficient of self-oxidization of the sludge flowing into the total oxidization tank 3 is set to 0.05 (per day). and the
method includes a step of adding a coagulant to the total oxidization tank 3 for the purpose of improving the solid-liquid separating
characteristic of the sludge within the total oxidization tank.
No. of Pages : 42 No. of Claims : 6
The Patent Office Journal 24/10/2008 25877