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Description of the "Batch" Process The BIO-PURE® treatment system utilizes an aerobic process which provides both extended aera- tion and contact stabilization.All waste liquor passes successively through four stages for secondary treatment and five for tertiary treatment: Secondary Tertiary 1. Disintegration 1. Disintegration 2. Aeration 2. Aeration 3. Clarification 3. Clarification 4. Disinfection (Chlorination) 4. Disinfection (CL,, or U.V.) 5. Filtration The secondary process is shown in the following diagram: S RAW EWAGE TREATED�SECONDARY WIENINFLUENT Of ` I L 0 HIGH LEVEL , PL flM L C-[ T' 9DREEN 1 OSTANDBY LEVEL MIXED LIDUOR TRANSFER PUMP DISCHARGE PUMP AERATION CHLORINE RETURN PUMPjLnPUMP AERATION CHAMBER CLARIFIER CLi CONTACT CHAMBER The BIO-PURE® batch process is programmed through tact chamber is pressure discharge to the filters or the a Solid State Controller to provide consistent treatment receiving body, the remaining liquid in the chamber is regardless of the erratic flows encountered from domestic returned to the aeration chamber for further biological wastewater systems. The turbulent action of air flow treatment. directed at the bottom of the Disintegrator Basket results in the attrition of all degradable solids entering the plant. The chlorine contact chamber is now ready to receive the After passing through the disintegrator all influent collects clarified supernatant. Chlorination is accomplished by in the aeration chamber where it is mixed with biologically pumping the supernatant through a non-mechanical, active mixed liquor and is digested.The Aeration Chamber splitflow chlorinator.Chlorine contact time is approximate- remains at least one-fourth full at all times in order to pro- ly seventy minutes. On completion of the supernatant vide a basic colony of bacteria for digestion fresh influent. transfer, the remaining liquid and sludge is pumped back The Aeration Chamber also provides a surge tank for to the Aeration Chamber for further treatment by the variable influent flow rates. bacteria. As the level in the Aeration Chamber raises to the Stand- In applications where Ultra Violet disinfection is desired by Level float switch, this starts the Controller and Mixed the pressure effluent is transferred through the dual media Liquor is transferred to the clarifier and accompanied by filters and into the LIM unit. Once passing through the a minimum two minute automatic skimming of floatable U.V. the disinfected effluent enters the outfall. solids back to the Aeration Chamber. Quiescent settling takes place for a minimum of sixty minutes. Prior to the Filter backwash can either be directed into the Aeration transfer of the Settled supernatant liquor, approximately Chamber or into a BIO-PURE® packaged Digester. ninety five percent of the treated water in the chlorine con-