同海大学 TONGJI UNIVERSITY Lesson V:Mixing Coagulation/Flocculation Dr.TANG Yulin
Company name Dr. TANG Yulin Lesson V: Mixing Coagulation/Flocculation
d 同©大号 Tongji University 净水厂鸟敢图 Coagulant Cl2 Conventional 111111 Treatment Flocculation Filtration Sedimentation
Tongji University
同©大号 Tongji University Pumping Storage tanks station Flocculant Raw water reservoir Mixing tank Flocculation tank Particulate filter Consumer Raw water held Water is mixed 3As aggregates Water Water is stored in reservoir to with flocculant of floc settle out, undergoes before use by allow particulates they carry colloidal filtration consumers to settle particles out of Water is disinfected suspension by chlorination, ozone treatment, or exposure to Municipal Water Purification Plant
Tongji University Municipal Water Purification Plant
酒 同©大 Lake or Reservoir Tongji University Coagulation removee dirt and other partcles susponded in water.Alum and othor chemicals are added to water to form Sny sticky particies caled"floc"which attract the dirt particles.The combined weight of the dirt and the alum (foc)become heavy enough to sink to the bottom during sedimentation. Sedlmentation: The heawy particles (floc) sette to the Storage: bottom and the Wster is placed in clear water moves a closed tank or to fitration. roservoir for Disinfection:A small amount of chlorine is added or disinfoction to take some other disinfection method la used to kdl any place.The waler bactera or microorganisms that may be in the water. then fiows through pipes to homes and businesses in the community. F月tration:The water passes through fiters, some made of Souce:AWWA Drnking Water Week Blue Thumb Kt layers of sand. gravel,and charooal thet help remove even smaler particles
Tongji University
同©大学 Tongji University Application of Mixing in Water Treatment 1.Mixing of coagulants completely within water, 2.Blending of miscible liquids, 3.Flocculation of particles in water
Tongji University 1. Mixing of coagulants completely within water, 2. Blending of miscible liquids, 3. Flocculation of particles in water, Application of Mixing in Water Treatment