Process and apparatus for the chemical-mechanical treatment and purification of ground waters, surface waters and effluents

摘要: A process and apparatus for the chemical-mechanical treatment purification of ground surface waters effluents various types employs adding materials coagulation, flocculation, precipitation, sedimentation altering pH value. The comprises separate stages carried out successively as follows: (1) a first initial stage wherein certain additives are admixed to raw water by stirring; (2) second contact sludge is (3) third flocculent aid possibly also at least some other added in stirring with high energy input; alternatively (4) fourth formation course flocs completion reaction previously settleable particles conglomerations together adsorbed attached occluded components moderate movement. After further occurs products separated from clarified removal solids water. separation zone accomplished inclined means part concentrated concentration 1% weight/volume after drying being returned stage.