Patent ID: 7410573

Claim:
A waste water purification system including a waste water purification apparatus, wherein the waste water purification apparatus comprises: purification means for purifying polluted salt water containing matter to be removed including particulate floating particles of plankton, oil particles, and organic matter, and polluted salt water from factory effluent containing matter to be removed, generated from industrial production sites, including pollutant particles and phosphorus; sludge recovery means for separating and collecting, from the waste water, sludge generated in purification treatment; and means for discharging purified salt water generated in the purification treatment; and said purification means and said sludge recovery means comprising: coagulation and separation means for forming flocs containing pollutant particles and phosphorus by infusing a coagulant, and for separating the flocs through at least a filtration process of filtering the flocs by a filter to create the purified salt water; floc disintegration means for generating an acidic solution and an alkaline solution by electrolyzing part of the purified salt water and for disintegrating the flocs collected as sludge by use of one of the acidic solution and the alkaline solution generated; coagulant regeneration means for regenerating the coagulant from matter forming the disintegrated flocs, separating the matter to be removed and the regenerated coagulant in the disintegrated flocs and extracting the coagulant; and sludge recovery and discard means for recovering and discarding the matter to be removed.