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Sewage Treatment Plant - Moving Bed Bio Reactor (MBBR) Technology

Screen Chamber

This tank will remove floating materials, plastics, larger objects etc., which will otherwise clog the pump.

Raw Sewage Collection Tank

The sewage will be collected in this tank. It will equalize the flow. From this tank it will be pumped to MBBR Tank under control process..

Moving Bed Bio Reactor (MBBR) Tank

The controlled process flow from sewage collection tank is taken into inlet launder of this tank. Floating type media is introduced within the treatment tank. This media is made up of special grade plastic of special density. In course of the treatment a bio-film develop on the elements. The MBBR within the reactor is provided with the help of diffuser placed at the bottom of the reactor. The thin bio-film developed on the elements enable the bacteria to act upon the biodegradable matter in the water and reduce the BOD content while, certain amount of COD is also removed. The overflow from the outlet launder is taken into Feed-Well of Secondary Clarifier. Diffusers are going to accompany with retrieval system for easy handling.

Clarifier Tank

From the MBBR Tank, the sewage will lead into Feed well of Clarifier Tank in which settling of microbial floccules takes place as sludge. Sludge from there would be transferred to sludge digester for further degradation. The supernatant from top will over flow into Intermediate Tank.

Sludge Digester

The bio-sludge from Clarifier Tank will be taken into this tank. The degraded sludge removed after 5-6 months from here can be used as Manure.

Intermediate Tank

The treated water from Clarifier Tank will overflow into this tank. This treated water gets pumped into tertiary filters.

Filter (PSF & ACF)

After Secondary treatment, the treated water will be given the tertiary treatment. The tertiary treatment consists of two phases.

Filtration Phase

The complete filtration operation comprises of two phases. Filtration and cleaning or regeneration (Commonly called as backwashing). The filtration phase in which particulate matters are removed and accomplished by passing the waste water to the filter through a filter bed composed of granular materials. Within the granular medium filter bed the removal of suspended solids has accomplished by a complex process involving one or more removal mechanism such as training, interception, impaction, sedimentation, flocculation and adsorption. The end of filter runs (filtration phase) is reached when the suspended solids in the treated water start to increase beyond an acceptable level or within a limiting head loss occurs across the filter bed. Once either of this condition is reached the filter must be cleaned (backwashed) to remove the material (suspended solids) that has accumulated within through the granular filter bed. Usually this is done by reversing the flow within through the filters. The sufficient flow of washed water is apply until the granular filtering media is fluidized (expanded). The material that has accumulated with a bed is then washed away.

Adsorption Phase

The pressure adsorption phase is a final polishing step in the removal of all organic matter. This is also required for removal of color, odour etc. from the treated water.

Ultra Violet (UV) disinfection system

The treated water from filters will be taken out from this system. This will help to disinfect the treated water from STP.