What is flocculation in water treatment process?
Flocculation is a water treatment process where solids form larger clusters, or flocs, to be removed from water. This process can happen spontaneously, or with the help of chemical agents. It is a common method of stormwater treatment, wastewater treatment, and in the purification of drinking water.Jul 31, 2019
What do you mean by flocculation?
Definition of flocculation n. The process of becoming flocculent. Precipitation from solution in the form of fleecy masses.
Why is flocculation important in water treatment?
Coagulation and flocculation are both critical processes to separate and remove suspended solids in water and wastewater treatment. These processes improve the clarity of the water to reduce turbidity.
What is difference between coagulation and flocculation?
Coagulation and flocculation are two separate processes, used in succession, to overcome the forces stabilising the suspended particles. While coagulation neutralises the charges on the particles, flocculation enables them to bind together, making them bigger, so that they can be more easily separated from the liquid.
What is the function of flocculation?
Coagulation and flocculation are used to separate the suspended solids portion from the water. Suspended particles vary in source, charge, particle size, shape, and density. Correct application of coagulation and flocculation depends upon these factors.
Why is flocculation important?
Applying flocculation ensures a high flux over filtration units as well as efficient and cost effective separation of cell material from supernatant. Used water can contain significant amounts of suspended particulate matter, which often takes long to sediment.
What is flocculation and sedimentation?
When this reaction occurs, the particles bind together, or coagulate (this process is sometimes also called flocculation). The larger particles, or floc, are heavy and quickly settle to the bottom of the water supply. This settling process is called sedimentation.Jan 23, 2017
What does flocculation not remove?
Suspended particles cannot be removed completely by plain settling. Large, heavy particles settle out readily, but smaller and lighter particles settle very slowly or in some cases do not settle at all.
What chemical is used for flocculation?
The aluminum coagulants include aluminum sulfate, aluminum chloride and sodium aluminate. The iron coagulants include ferric sulfate, ferrous sulfate, ferric chloride and ferric chloride sulfate. Other chemicals used as coagulants include hydrated lime and magnesium carbonate.
What is flocculation geography?
Flocculation. Particles carried by a river join together on contact with the salt in sea water, increasing particles' weight, causing them to be more readily deposited. Flood. A temporary excess of water which spills over onto land.
Does flocculant lower pH?
Balance the pH level to about 7.0 Because flocculants can affect the pH level, you'll want to start out with it at about 7.0 so you can make sure your sanitizer keeps working at maximum efficiency.