OPERATING EXPERIENCE OF THE JOINT SCOTT-PAPER AND CRABTREE MUNICIPALITY EFFLUENT TREATMENT SYSTEM

Over three years of operating experience, three major problems were en countered with this treatment facility. They include flotation on the primary sedimentation clarifier, foam on the aeration basin and filame ntous sludge bulking. Causes of these problems are discussed and solut ions presented. The conclusion stresses that sludge dewatering capacit y is critical and must satisfy seasonal needs, that spill protection i s essential and that treatment system clean-out strategies are require d. Finally, it is shown that deinking effluents need specific treatmen t plant configurations.