Recognize one (or more) of these … ?

• Effluent non-compliancy or discharge limit violations (SS, COD, BOD, N, P, heavy metals, etc.)
• Filamentous and non-filamentous sludge bulking, leading to bad sludge settling
• Foam or scum layers on tanks, clarifiers and worst case: overspill
• Turbid effluents: high SS, pin point, complete deflocculation
• Rising sludge in clarifiers, settlers or thickeners, resulting in heavy sludge losses
• Fines, litigation, etc.
• Odour problems: complaints from your staff, neighbours or even your clients!
• Sludge dewatering problems
• Final sludge disposal not compliant and/or  too expensive
• Effluent not meeting internal standards
• One or more processes are unstable or difficult to control
• MBR underperformance problems like insufficient flux, more cleaning, increasing downtime, etc.
• New discharge licensing limits
• A lack of understanding resulting in not getting a grip on processes
• All kinds of discussions with suppliers, (sub)-contractors, etc.
• Warranty issues and discussions
• Those mind boggling questions you have not found an answer for yet …
• Your Black Beast…?