The invention relates to a technological method for controlling the disinfection by-product and
pathogenic microorganism risk of drinking water, belonging to the field of drinking
water treatment. The drinking water is produced by combining biological pretreatment, pre-ozonation, main ozonation,
active carbon filter and conventional coagulation-
precipitation-sand
filtration-
disinfectant fluid treatment technology, and the method is a feed
water treatment technological method which is developed for the micro-
pollution raw water and controls the disinfection by-product and
pathogenic microorganism heath risk in the water purifying process. The micro-polluted
raw water sequentially enters a biological pretreatment tank, a pre-ozonation contact tank, a folded-plate flocculating tank, an inclined-tube
sedimentation tank, a
sand filter, a main ozonation contact tank, an
active carbon filter and a disinfection tank, and finally flows into a
clean water reservoir. Through the application of the biological pretreatment, two-level
ozone oxidation and
active carbon technology, the removal effect on the
turbidity, organic matters, the disinfection by-product precursor, the
virus microorganism,
bacteria microorganism and the like is obviously improved, and the
water quality and safety are obviously superior to those of the traditional coagulation
sedimentation technology.