NEW GENERATION APARTMENTS

BACKGROUND:
NEW GENERATION APARTMENTS is located at Zirakpur; sewage generation is approx. 100 KLD

GENERAL SCHEME:

• The plant is designed for receiving raw sewage and settling & screening of the heavy floating particles. There will be a primary bar screen chamber to screen the foreign particles followed by an oil trap to trap the oil contents therein.
• The pre-screened sewage is treated by means of an efficient and compact Anoxic cum Biozone SBMR (Surface Booster Media Reactor) requiring minimal power input and maintenance. It is an aerated moving bed system combined with a secondary clarifier. The rotating media is free-flowing with the required MLSS growth in and around the bio media to consume the active dissolved oxygen injected by air blowers, with highersurface area and net hydraulic lift. The Biozone is self-cleansing but a sludge recirculation pump will pump out the excess MLSS to the solid disposal pit. It is a modular single skid-mounted unit complete inbuilt with a central control system
• The Final Settlement is a tube settler clarifier for the sedimentation of solids & residual of MLSS in the form of sludge. Tube settler is the best-suited clarifier to decant the flocculated solids in the form of sludge. This cross-current entry method reduces the risk of disturbing previously settled solids. As the liquid flows upward, the solids settle on the inclined, parallel plates and slide into the sludge hopper at the bottom. The clarified liquid leaves the tube assembly through orifices or weirs at the top, and the underflow is removed from the sludge hopper or sludge tank below the unit, and usually dewatered prior to disposal.
• The pressure sand filter (PSF) is used as tertiary treatment unit to trap the trace amounts of solids which escape the clarifier, and can typically handle up to 50 mg/l of solids in an economical manner. This unit is essentially a pressure vessel that is filled with graded media (sand and gravel). The water filtered with PSF is passed on to the next stage in the STP chain: the Activated Carbon Filter