midc presentation

8/10/2019 MIDC Presentation

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WE LCOMEPROPOSAL OF INSTALLATION OF

MECHANICAL BAR SCREENS


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The purpose of

screening process

Restrict the entry of suspended solidssuch as garbage in the water treatment

plant.Prevent pump, pipe and equipment fromclogging or damage.


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3D front side view of intake screen 3D side view position of intake screen


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3D Back side view 3D Section view


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FEATURES OF A GOOD SCREEN

Pumping Station Screens

Mechanically operated multi rake bar screen withthe following features:

Bar spacing 10 mmMOC SS 304 or SS 316 no other material to beused.Submerged ceramic lined maintenance freebearingsElectronically controlled Automatic jam removalsystemDual speed mode to handle flash flows. Cleaningcycle of 10 and 5 seconds respectively.


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SYSTEM OF GOODSCREENING

Screen shall remove solids from rawwater.Screenings shall be mechanically raisedon screen to the dead plateautomatically discharged to conveyorbelt, which in turn will dump it at a

convenient point for further disposal.


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Advantages of Mechanizedscreens.

Due to mechanized screens, no clogging andwater contamination problems occurs.No major head loss due to single screening.

Life of mechanical screens is almost 20 Yrs., insubmerged condition for SS 316 as MOC. Thisis absolute saving of recurring cost of MS wirescreen and manpower for cleaning.

Due to non-clogging the addition pumping will beavoided in rainy or high flood seasons.No water contamination hence reducedtreatment cost and safety.


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MULTI RAKE BAR SCREEN ATSHAHAD INTAKE HOUSE

Thane city Engineer visited at Shahadintake house to see the functioning ofscreening.


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Suspended solid waste which remove by bar screen through Conveyor belt


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MIDC Sites visited

Barvi Intake Airoli effluent pumping stationRabale effluent pumping stationRansai Intake structure


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Observations

Barvi intake- there are two intake channels withmanual screens installed. The screens are placedwith reducing opening size.

Airoli effluent pumping station-The pumping station isnewly constructed . It is still not commissioned. TheInlet channel size is 3.5 m wide and 6.9 m deep. Twochannels are providedRabale effluent pumping station-this pumping stationis a old structure. The main inlet channel size is 2.4mx2.05 m

Ransai Intake Structure-At this site a dam isconstructed .Through a underground inlet pipe wateris drawn to a inlet fountain.


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Barvi


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BARVI


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AIROLI EFFLUENT P.S.


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AIROLI EFFLUENT P.S.


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RABALE E.P.S


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RABALE E.P.S


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RANSAI INTAKE


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RANSAI INTAKE


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DATA REQUIRED FOR DETAILED DESIGN

1. Invert level of channel

1. Highest flood level (HFL)

1. Platform level desired( should be above HFL)

1. Top level of channel (ground level)

1. Intake stream type (pond, stream, river)

1. Peak flow

1. Channel width (cross section profile)

1. Desired bar spacing (10 mm)


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PRELIMINARY COSTESTIMATE

Barvi Intake-3.25cr Airoli effluent pumping station-1.64crRabale effluent pumping station-0.25crRansai Intake structure-0.25cr


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THANK YOU

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