Flow enters the solids Retention Section (A) which is separated by non-corrosive screen. Inorganic solids are retained behind the screen. Organic solids are broken by turbulence created with mixed liquor being forced through screen by submersible aeration pumps. This eliminates the need for mechanical comminution.
Wastewater Treatment and Recycling Process
Step 2
Liquid and small organic solids pass through the screen into the continuing Aeration section (B). Air and mixing are provided by submersible pumps with venturi aspirators that receive air through pipe intake from the atmosphere.
Step 3
Provided by an anoxic period during the regular treatment cycle. Cromaglass units create anoxic conditions by closing the air intakes of the aeration pumps with electric valves. This stops aeration, but the system continues mixing.
Step 4
Treated mixed liquor is transferred by pumping to the Clarification Section (C). The transfer period overfills the Clarifier with the excess spilling through overflow weirs back into the main Aeration Section. Transfer ceases and Clarifier (C) is isolated - solids separation occurs under quiescent conditions.
Step 5
After settling, effluent is pumped out of the Clarifier (C) for discharge. Sludge is returned from the bottom of the Clarifier (C) back into the main Aeration Section (B) using a submersible pump, or sludge can be wasted to a Sludge Processing Tank.