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failed, land-consumptive waste treatment systems with modern, bio- logically correct wastewater/sewage systems. ACT systems are prov- NOTES ing cost-effective through elimination of old septic and pond systems, thereby eliminating leachlines or pits and returning valuable land to income-producing status. AquaClear's industrial and domestic waste treatment plants have proven reliable with very little maintenance, even when operating under the most rigorous conditions. Each system is tailored to the customer's specific needs and conformance to local, state, and fed- eral regulations.The treatment plants are of modular design to allow for easy future expansion. WASTEWATER TREATMENT SYSTEM PROCESS DESCRIPTIONS Following are two descriptions of the AquaClear wastewater treat- ment system process. The fust is written in nontechnical terms to enhance the layman's understanding of the system's operation and processes. The second is written for those already familiar with the basic technology,but want to delve deeper into the inner workings of the process through an understanding of the equations and formulae which make the process work. Technical terms contained in these articles may be referenced in the glossary following the technical description. A foldout flow schematic is provided on the last page of this pam- phlet.Please use it to follow the flow description. THE SYSTEM The basic principle of the process is the digestion of waste by micro- organisms. The system operates at a high mean-cell-residence-time (MCAT), thus creating a low food (waste) to microorganism (F:M) ratio. This low F:M ratio results in a condition where there is not enough food in the system to support all the microorganisms pres- ent. The low number of microorganisms are forced to actively com- pete for any remaining food, even using their own cell structure as food. This competitive situation results in a highly treated effluent with very low sludge production. Unlike a flowthrough system,which often outputs only partially treated waste in quantities equal to volume of the incoming load (100 gal- lons in, 100 gallons out), the AquaClear system processes waste in batches. This makes possible the efficient and _fledive treatment of sewage regardless of uneven incoming flow patterns. Influent is directed into the system from a buffering pretreatment or stabilization tank which is generally located underground, outside the building where the treatment system is housed. Once in the aeration chamber, the influent (now called mixed liquor) is aerated by a series of diffusers located near the bottom of the tank and fed by an externally mounted air compressor. The diffusers may be of the coarse-bubble or fine-bubble design, or a combination of both. 2