Ballast Decanter

Decanters are deployed in sequencing batch reactor (SBR)/ Cyclic wastewater processes to separate the sludge from clear effluent. We have developed a Ballast decanter which is a scum/solids excluding floating type decanter. The decanter is air powered and can be driven by the plant's aeration system thereby eliminating the need for any complex equipment. Vertical movement of the decanter is established by injecting or releasing pressurized air. The emergency level is fixed at a maximum position to eliminate possible overflow. The lower position is arrested by a stopper provided at the bottom of the tank. The entire system can be moved to ground level for maintenance with help of the winch.

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Ballast Decanter Overview

We manufacture Ballast decanter which is a scum/solid excluding floating type decanter for use in SBR/ Cyclic wastewater processes. The decanter is air powered and is driven by the plant’s aeration system. The decanter has two positions, cut-off and work. The decanter is moved in a vertical direction by injecting or releasing pressurized air into the body of the decanter.

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Ballast Decanter Specifications

Decanter Size

300 mm, 400 mm, 500 mm & 600 mm

Decanter Capacity at 3 m height (m3/h)

850, 1575, 2450 & 2625

Three-way valve size

40 mm (for 300 & 400 mm decanter size) and 50 mm (for 500 & 600 mm decanter size)


Compressed Air

800 LPM (for 300 mm & 400 decanter size) and 2500 LPM (for 500 mm & 600 mm decanter size)

Compressed Air Pressure

0.05 Kg/cm2 for all decanter sizes

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Application areas of Ballast Decanter

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Industries Using Ballast Decanter