Potential Engineering products

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.

Floating decanter is used in sequencing batch reactors (SBR) to discharge settled water from the tank. The basic design principle of the decanter is to utilize spring-loaded non-return valves to isolate effluent piping from the surrounding mixed liquid when the tank is in-filling. The scum/solids excluding type floating decanter do not have electro-mechanical components and it eliminates motors, gears, and drive units. A simple open/close valve is used to control flow through the decanter. No in-basin components require routine maintenance or scheduled replacement. The system can be operated either manually or can be PLC based.

Supernatant decanter is a floating type decanter. It is used to remove supernatants from the upper portion of the basin. It collects water from below the top surface of precluded foam, sludge, scum, or other floatable material. To control the decanter flow rate, a standard open/close valve is used. No electro-mechanical component is used inside the tank thus, facilitating ease of operation and maintenance. To restrict the lower movement of the decanter a stand is provided at the bottom of the tank. A flexible joint helps in changing the position of the decanter with changes in liquid levels.