CLEARBOX® SBR Flex Series

The waste­water first flows into a screen­ing cham­ber where fil­ter­able sub­stances are screened out. This is an essen­tial step to avoid clog­ging of the pumps and the bio­car­ri­er tex­tile media. Then, depend­ing on pol­lu­tion load, the reac­tion phase can start imme­di­ate­ly in the flex­i­ble zone (e.g. for bio­log­i­cal pre­treat­ment of organ­ic rich waste­water) and/or in the SBR zone.

The reac­tion phas­es con­sist of an anaer­o­bic mix­ing phase, fol­lowed by aer­o­bic and/or anox­ic phas­es to achieve phos­pho­rous elim­i­na­tion, nitri­fi­ca­tion, and nitri­fi­ca­tion-den­i­tri­fi­ca­tion, respec­tive­ly. The final steps are set­tling and decant­i­ng phas­es where bio­mass sep­a­ra­tion and dis­charge of the treat­ed waste­water takes place, consecutively.

One of the main advan­tages of CLEARBOX® is incor­po­rat­ing CLEARTEC® and a mul­ti-pur­pose tank, which improve sludge set­tleabiliy (a patent­ed solu­tion) and facil­i­tates gen­er­a­tion of gran­u­lar and gran­u­lar-like bio­mass (a patent pend­ing process), respectively.

This third frac­tion of sludge has excel­lent set­tling prop­er­ties (typ­i­cal­ly stat­ed as SVI) and high­er nitri­fi­ca­tion rate com­pared to the con­ven­tion­al bio­mass. The low SVI val­ue from the sludge of CLEARBOX®, allows for a high­er exchange vol­ume, while reduc­ing the required set­tling and reac­tion time.