Physical-chemical treatment
For water pre-treatment
What is physico-chemical treatment?
Whether producing drinking water or treating wastewater, a crucial step in the treatment process is removing particles. These particles have different sizes. They are divided into 4 categories:
- dissolved(< 0,08 μm),
- colloidal(0,08 – 1 µm),
- supracolloidal(> 1 – 100 µm)
- settleable(> 100 µm).
- Neutralization: pH correction to achieve optimum coagulant efficiency (value indicated on product data sheet).
- Coagulation: quick mixing of a coagulant with the property of neutralizing the negative charges of particles contained in water.
- Flocculation:By slowly mixing another chemical called flocculant for several tens of minutes, flocs form and aggregate.
- Separation: This is the physical separation of solids (by settling, flotation or filtration), which settle easily thanks to their increased volume and density!
The word clarifloculation refers to all these steps combined
What is physico-chemical treatment used for?
This type of treatment is used in many cases for many applications:
- Accelerate particle settling speed (Hazen speed) to reduce the size of structures and save floor space
- Remove fine, colloidal and dissolved particles
- the most suitable chemical products
- optimal chemical doses
- optimal contact time.
Some examples of packages involving physico-chemical treatment:
-
CF-S Coagulation flocculation
Coagulation flocculation -
Compact Clarifloculator CFC.DLC
Coagulation flocculation -
Clariflocculator CF-S.DL-M
Coagulation flocculation