Apparatus and methods for sequential treatments of process flows

An apparatus for removing and disinfecting particulate matter from a process flow comprising:

• a. a first filtration unit comprising filtration screens;
• b. a first disinfectant unit comprising a source of disinfecting light;
• c. a first passage for filtrate from the first filtration unit to the first disinfectant unit;
• d. a second filtration unit comprising filtration screens;
• e. a second disinfectant unit comprising a source of disinfecting light;
• f. a second passage for filtrate from the second filtration unit to the second disinfectant unit;
• and
• g. a central outlet box joining the first disinfectant unit with the second disinfectant unit.

A process for removing and disinfecting particulate matter from a process flow comprising the following steps:

• a. filtering the process flow to remove a majority of the particulate matter;
• b. directing the filtrate to a source of disinfecting light while creating turbulence in the filtrate;
• and
• c. disinfecting the filtrate.