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Aeration Chamber in Sewage Treatment Plants Effluent Treatment Plants Manufacturer, New Delhi NCR, India, ETP
Aeration Chamber or Reactor
Aeration Chamber is a Reactor where conversion of organic biomass takes place in the presence or absence of oxygen by the bacteria responsible for degrading organic matters. The combination of Reactor and Media is called technology
SAFF : Submerged Aerobic Fixed Film Reactor , As the name suggest In SAFF reactor media is submerged into the reactor
MBBR : Moving Bed Bioreactor , As the name suggest media is constantly moving in the reactor , media used in this technology is bio pac media and the contact movement of media is achieved by the activity of diffusers.
Why we need Head Room in Aeration Chamber ?
Head room is Required to let the gases escape and also for regular maintenance / cleaning of diffusers etc , Minimum headroom required is 3 feet , Not obstructed by pipes, or ventilation ducts etc.
Why we require work platform ?
Work platform is Required for MLSS check, and maintenance of the diffusers , mandatory for every plant , work platform Must provide waist-level access to tank , Must have safety railings, Minimum width=3 feet , Must have anti-skid surface If made from MS, must be painted to prevent corrosion
Shape of the Reactor ?
The shape of reactor can be circular , rectangular and square , calculation is done in such a way that The shape of tank must allow uniform aeration, and also thorough mixing of sewage and sludge for vigorous and healthy growth of bacteria , The shape of the tank must not obstruct placement of diffusers
How to place inlet pipe in Aeration Chamber Elbow/T joint at the end to deliver the wastewater downward , The pipe must not propel the sewage toward the outlet The raw wastewater and sludge inlet pipes should be above the wastewater level (i.e., above the weir of the outlet-side launder) , Discharge of both raw wastewater and sludge into aeration tank should be visible for monitoring purposes, and not immersed inside water
Why to provide baffle wall ?
Baffle wall is mandatory to prevent short-circuiting of wastewater: The incoming wastewater must not head straight toward the exit without adequate retention (digestion) in the tank , The height of the baffle wall above the water surface must be equal to the other walls of the tank The depth of the baffle wall under the water surface must be between 0.25D and 0.30D. • Where D = Depth of water in tank
RAS inlet and wastewater inlet pipe placement. Maximum distance between the wastewater inlet pipe and return sludge inlet pipe required is 2 feet , because Recirculated sludge must be delivered in close vicinity of the raw wastewater inlet, to ensure maximum, intimate contact between wastewater and bacteria.
Inlet outlet separation ?
The inlet is positioned to give maximum possible linear distance from the outlet , The inlet and outlet must be placed farthest from each other; to ensure maximum possible retention time of wastewater (and thus treatment) in the tank.
Free Board ?
Free board is mandatory To prevent emergency situations. A recommended practice should be level-monitoring and warning system
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