Secondary waste water treatment apparatus

Claim 1

IN A BIOLOGICAL OXIDATION APPARATUS FOR THE SECONDARY TREATMENT OF WASTE WATER COMPRISING AN ENCLOSURE, THE ENCLOSURE HAVING AN UPPER AND A LOWER END, A PLURALITY OF VERTICALLY DISPOSED SPACED APART SHEETS DEFINING SPACES THEREBETWEEN, THE SHEETS BEING IN SUBSTANTIALLY PARALLEL ARRANGEMENT AND HAVING UPPER ENDS AND LOWER ENDS, A LIQUID DISTRIBUTOR COMPRISING MEANS TO PROVIDE A LIQUID ONTO UPPER ENDS OF THE SHEETS, A LIQUID DISCHARGE AT THE LOWER END OF THE ENCLOSURE ADAPTED TO REMOVE THE TREATED WATER, THE IMPROVEMENT WHICH COMPRISES A PLURALITY OF BAFFLES, THE BAFFLES BEING POSITIONED WITHIN THE SPACE ADJACENT THE UPPER END OF THE VERTICALLY DISPOSED SHEETS, THE BAFFLES COMPRISING ELONGATE MEMBERS HAVING TWO GENERALLY PARALLEL EDGES, THE EDGES HAVING SERRATIONS, THE SERRATIONS HAVING POINTS, THE POINTS OF THE SERRATIONS OF EACH EDGE BEING DISPOSED AGAINST A HANGING SHEET, EACH BAFFLE DEFINING A SURFACE LYING BETWEEN THE EDGES WHICH IS REMOTELY DISPOSED FROM THE ADJACENT SHEETS RELATIVE TO THE EDGES AND ADAPTED TO CAUSE LIQUID FALLING THEREON TO BE DEFLECTED TO THE EDGES, THE BAFFLE BEING POSITIONED IN SUCH A MANNER THAT THE FALLING SPRAY OF LIQIUID IS DEFLECTED ONTO THE UPPER PORTION OF EACH OF THE HANGING SHEETS AND IS PREVENTED FROM FALLING BETWEEN THE SHEETS.