The system was treated with AQUACLEAN / ACF-32 at 5 PPM and then provided maintenance dosage at 1 PPM level thereafter. Within two weeks the system demonstrated visible signs of improvement. The post treatment analysis of the effluent revealed the following percentage improvements.
The above reductions are continuing to improve as the bacteria of AQUACLEAN become acclimated to the system, again showing the cost effectiveness of the use of bio-augmentation.
AQUACLEAN / ACF-32 controlled the concentration of influent phenolic materials which was causing total loss of bacterial populations in a secondary treatment plant. The daily influent concentrations of phenol were often in excess of 30 mg/l in the effluent.
Through the use of AQUACLEAN and some diversion of flow, control was achieved even when influent concentration of phenol was over 100.0 mg/l. In addition, the anaerobic digester was often disrupted because of toxic conditions. The use of AQUACLEAN directly into the primary digester brings the digester back on line much faster than it would otherwise recover. The use of AQUACLEAN in anaerobic digestion of municipal sludge has long been a beneficial practice. Solids balancing of an anaerobic digester is the primary method of affecting control over these systems. Often this balance is difficult to maintain, especially in recent years, due mainly to the aging of undersized systems and heavily increased solids loading.
The increased use of highly complex industrial waste material is adding to the problem of proper digester operation. Application of AQUACLEAN to these systems has demonstrated its ability to quickly restore proper operating parameters, showing increased gas production, volatile solids destruction and overall solids removal efficiency. Heavy metal loading into these anaerobic digesters is resulting in extraordinarily toxic conditions. Although AQUACLEAN is sensitive to metal toxicity, the effective use of this bacterial augmentation can overcome these toxic conditions, especially if the heavy metal toxicity is cyclic.
The excellent efficiency of AQUACLEAN’s bacteria to oxidize hydrocarbons makes it particularly effective against complex organic compounds, which end up in the digester. AQUACLEAN’s affinity for hydrogen sulfide oxidation makes it beneficial in controlling odor problems always associated with malfunctioning anaerobic digester systems.