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Coagulation-Flocculation Part 2 - Coggle Diagram
Coagulation-Flocculation Part 2
Technologies
Physical
adsorption techniques
membrane filtration process
Biological
fungal decolorization
microbial degradation
adsorption by microbial biomass
Chemical
precipitation
ion exchange
filtration
electrokinetic coagulation
electroflotation
benefits
of flocculation
to increase removal of suspended solids and BOD
to improve performance of settling tanks
to improve settling of particles in sedimentaion tank
Advantages and Disadvantages
Advantages
Physical
produce a high-quality treated effluent
great capacity
most effective adsorbent
Biological
publicly acceptable treatment
Economically attractive
Chemical
Removes all pollutants types to be able to produce a high-quality treated effluent
No loss of sorbent on regeneration and effective
Rapid and efficient process
Disadvantages
Physical
formation of by-products
Economically unfeasible
technical constraints
Biological
necessary to create an optimal favorable environment
Slow process
maintenance and nutrition requirements
Chemical
Expensive
High energy cost, chemicals required
Coagulant type
metal
Alum
inium Chloride
Ferric Chloride
organic polymer
Moringa olifeira
chitosan
charcoal/ bio-char
Application
Coagulation
Industrial waste containing colloidal and suspended solids
Chemical Precipitation
Definition
removal of metal ions from solution by changing the solution composition, thus causing the metal ions to form insoluble metal complexes
Natural method
settling or sedimentation
solid forms over a period of time due to ambient forces like gravity or centrifugation
Applications
treatment of “hard” water
phosphorus removal
removal of metals from waste stream
making pigments
removing salts from water in water treatment