Coagulation Jar test six-gang jar tester Coagulation Alum agitator Jar tester,Nairobi,1938 Particles
Coagulation agitator Jar tester, Nairobi, 1938
Coagulation Types of Coagulants Chemical Name Chemical Formula Primary Coagulant Coagulant Aid Almminum sulfate (Alum) A2(SO,3·14H2O X Ferrous sulfate Fes04·7H0 X Ferric sulfate Fe2(S04)39H20 X Ferric chloride FeC13·6H20 X Cationic polymer Various X X Calcium hydroxide (Lime) Ca(OH)2 X* X Calcium oxide (Quicklime) CaO X+ X Sodium aluminate NaAl2O4 X+ X Bentonite Clay X Calcium carbonate CaCO3 X Sodium silicate Na2SiO3 X Anionic polymer Various X Nonionic polymer Various X POLYALUMINUM CHLORIDE Al(OH)Cl3nm X
Coagulation
Poly Aluminum Chloride for Drinking Water Liquid Solid Index High-class First-class product product High-class product First-class product A,03 Content%≥ 10.0 10.0 30.0 28.0 Basicity 40-85 40-80 40-90 40-90 Density(20%)/(g/cm3)）≥ 1.15 1.15 Non-dissolved Substances/% 0.1 0.3 0.3 1.0 pH(1%aqueous suspension) 3.5-5.0 3.5-5.0 3.5-5.0 3.5-5.0 As%≤ 0.0001 0.0002 Pb%≤ 0.0005 0.00L Cd/%< 0.0001 0.0002 且gP6≤ 0.00001 0.00001 Heavy metal in the coagulant! Cr+/6 0.0005 0.0005 Ore:calcium aluminate
Poly Aluminum Chloride for Drinking Water Index Liquid Solid High-class product First-class product High-class product First-class product Al2O3 Content %≥ 10.0 10.0 30.0 28.0 Basicity % 40-85 40-80 40-90 40-90 Density (20%)/(g/cm3) ≥ 1.15 1.15 - - Non-dissolved Substances /%≤ 0.1 0.3 0.3 1.0 pH(1% aqueous suspension) 3.5-5.0 3.5-5.0 3.5-5.0 3.5-5.0 As /%≤ 0.0001 0.0002 Pb /%≤ 0.0005 0.001 Cd /%≤ 0.0001 0.0002 Hg /%≤ 0.00001 0.00001 Cr6+ /%≤ 0.0005 0.0005 Ore: calcium aluminate
Drinking water treatment in Ethiopia 100 Jar test 99.6 Raw water turbidity:>500 NTU Treated water turbidity:1-2 NTU 98.8 98.4 KupiqmL 98 97.2 6 78910 coagulant dosage(mg/L)
Drinking water treatment in Ethiopia • Jar test • Raw water turbidity: >500 NTU • Treated water turbidity:1-2 NTU
Drinking water treatment in Kenya Kabete WTP Ng'ethu WTP 16 6 (n''N)AupIqum 5 (n'I'N)lenpisay 12 3 ◆-PAC-CFII 8 ◆-PAC-CFII 2 PAC-SDD 6 --PAC-SDD △-ALUM 4 2 ALUM 0 0 10 15 20 25 10 15 20 25 Dosage(mg/川) Dosage (mg/I) Sasumua WTP 18 (n'I'N)AupIqina lenpisay 6420 ◆-PAC-CFI 864 --PAC-SDD -ALUM 0 0 5 10 15 20 25 Dosage(mg/川 WTP PAC-SDD PAC-CFII ALUM NG'ETHU 97.7% 98% 89.8% SASUMUA 81.9% 84% 75% KABETE 91.8% 92% 89%
WTP PAC-SDD PAC-CFII ALUM NG’ETHU 97.7% 98% 89.8% SASUMUA 81.9% 84% 75% KABETE 91.8% 92% 89% Drinking water treatment in Kenya