Specifications

The Patent Office Journal 17/12/2010

4502

(12) PATENT APPLICATION PUBLICATION (21) Application No.1382/MUM/2009 A

(19) INDIA

(22) Date of filing of Application :08/06/2009 (43) Publication Date : 17/12/2010

(54) Title of the invention : HORIZONTAL JET-SPIRAL FLOW- HOPPER FLOCCULATOR

(51) International classification

:B01D21/01;

B01F7/04;

B01D21/01

(31) Priority Document No :NA

(32) Priority Date :NA

(33) Name of priority country :NA

(86) International Application No

Filing Date

:NA

(87) International Publication No : NA

(61) Patent of Addition to Application Number

Filing Date

:NA

(62) Divisional to Application Number

Filing Date

:NA

(71)Name of Applicant :

1)BHOLE A.G.

Address of Applicant :FLAT 102, YASH ENCLAVE, 259

DHARAMPETH EXTN, NAGPUR 440010. Maharashtra India

(72)Name of Inventor :

1)BHOLE A.G.

(57) Abstract :

The invention, Horizontal Jet-Spiral Flow-Hopper Flocculator is one of the units for treatment of surface water, the tapered velocity

gradient achieved in the invention during process of flocculation results in converting colloidal impurities of raw water to dense and

large size floes which efficiently and effectively settle down in the sedimentation unit that follows the invention. The invention

achieves spiral flow in the entire body of the flocculator with gradual reduction in the velocity of flow, which is helpful for tapered

velocity gradient in the whole volume of the flocculator. The invention Horizontal jet Spiral Flow Hopper Flocculator consists of a

hopper shaped tank either square or circular in plan, main inlet pipe fitted with a jet at the end of pipe, secondary inlet pipe without a

et, both pipes with valves, placed at the hopper bottom and connected to a pump to pump the required flow of raw water (flow means

water volume per unit time) with required velocity from the raw water tank to the flocculator by adjusting the two valves, additional

third pipe with a valve to re-circulate the excess quantity of raw water back to the raw water tank, the diameter of the jet nozzle so

chosen that it gives the required water velocity, smaller the nozzle diameter higher the velocity and vise versa; a spiral staircase

through-out the depth of the hopper with its treads around a centrally located slotted vertical pipe which supports the treads (or steps)

also helps to collect the settled sludge (if any) on the treads through the slots and finally transfer the collected sludge to the sludge pit

at the bottom of the hopper tank, the sludge pit provided with a outlet pipe and valve for intermittent withdrawal of the collected

sludge in the pit; a collecting launder around the outside of the hopper - top for collecting the flocculated water with an outlet

arrangement in the form of a channel or a pipe to carry the flocculated water to the next unit i.e. the sedimentation tank.

No. of Pages : 25 No. of Claims : 9