Water treatment chemicals can help to reduce organic and inorganic impurities, before they reach the semi-permeable membrane in the RO process and create fouling.
The usage of these chemicals assists the RO system in saving energy and avoiding membrane fouling, which can result in unforeseen costs at any time.
What are the various water treatment chemicals?
A: Antifoam chemical types
When some forms of gas are spread into a liquid, they form foam, which is a mass of bubbles. Strong liquid coatings surround the bubbles, resulting in vast amounts of non-productive foam.
When foam is not controlled, it can impair equipment capacity and lengthen and raise the cost of procedures.
B: Coagulants
Positive ions with a high valence are favoured as coagulants. Coagulation is highly reliant on coagulant dosages, pH, and colloid concentrations.
C: Corrosion Inhibitors
Inhibitors are substances that react with a metallic surface, providing it with some measure of protection. Inhibitors frequently act by adsorbing themselves on the metallic surface, and producing a layer to protect the metallic surface.
Corrosion inhibitors are classified into five types. They are as follows:
- Passivators.
- Inhibitors of cathodic current.
- Organic stiflers.
- Inhibitors of precipitation.
- Inhibitors of Volatile Corrosion (VCI).
D: Flocculants
To stimulate the production of flocs in water containing suspended solids, polymer flocculants (polyelectrolytes) are used to facilitate the creation of linkages, between particles.
These polymers have a highly unique effect that is determined by their charges, molar weight, and molecular degree of ramification. The polymers are water-soluble, with molar weights ranging from 105 to 106 g/mol.
E: Agents of neutralization (alkalinity control)
To neutralize acids and bases, we utilize either sodium hydroxide solution (NaOH), calcium carbonate, or lime suspension (Ca(OH)2). To lower pH levels, we utilize diluted sulphuric acid or diluted hydrochloric acid. The amount of neutralizing agents used is determined by the pH of the water, in a reaction basin.
F: Oxygen Scavengers
Scavenging oxygen involves preventing oxygen from initiating oxidation processes. The majority of naturally occurring organics have a small negative charge.They can absorb oxygen molecules because they have a little positive charge, preventing oxidation events in water and other liquids.
G: pH stabilizers
Municipal water is frequently pH-adjusted to prevent pipe corrosion and lead dissolution, into water supplies. pH modifications may also be required during water treatment. The pH is adjusted by adding basic or acidic compounds.
H: Cleaners for resins
Ion exchange resins must be regenerated after usage before they may be reused. However, fouling occurs every time the ion exchangers are employed. Because, impurities that enter resins are not eliminated by regeneration, resins must be cleaned using specific chemicals.
Chemicals utilized include sodium chloride, potassium chloride, citric acid, and chlorine dioxide.
I: Scale inhibitors
These are negatively charged polymers, which are surface active. Polymers become connected as minerals exceed their solubility, and begin to combine. The crystallization structure is broken, and scale formation is avoided. The scale particles mixed with the inhibitor will then be distributed and remain suspended.
How can we assist?
Netsol Water carry a wide selection of water treatment chemicals and resins that serve a variety of purposes, both incorporated into water treatment systems. Special water treatment issues can be addressed using specialized chemicals and dose levels, in conjunction with active components to enhance the degree of mitigation accomplished, and hence the value gained.
We provide water treatment system customization based on client needs. All of these solutions include an incorporated Pre-Treatment system, RO process, Post filter, and PLC controller as standard features. Our experts have conservatively developed these items for dependable, long-term performance.