How to remove heavy metal for Wastewater treatments?
Several water resources worldwide, including underground water resources, are contaminated and unfit for drinking. Reliable wastewater collection and treatment are critical for improving global health, and preventing disease spread.
Generally, industrial wastewaters contain huge amounts of heavy metals, like zinc, lead, nickel, cadmium, etc., which needs to be eliminated. Let’s go through some procedures for removing heavy metals from wastewater.
Which metals can be found in wastewater?
Heavy metals found in wastewater are typically nickel, lead, cadmium, and zinc.These metals, such as Zn2+, Ni2+, Cd2+, and Pb2+, are present in water at ppb levels in cationic form.
Why is elimination of Heavy Metals important?
Heavy metals such as lead, mercury, and arsenic have been linked to the following health issues:
· Lead poisoning can result in coma, convulsions, or death.
· Lead may harm the baby in the womb.
· It can interfere with a child's brain development.
· Kidney failure can occur as a result of lead exposure.
· Mercury can have an impact on both the digestive and immune systems.
· Some mercury compounds are potentially harmful to the eyes and skin.
· Mercury is poisonous to both the central and peripheral nervous systems.
· Long-term arsenic exposure can cause cancer and skin lesions.
· Arsenic has also been linked to a number of cardiovascular and neurological conditions.
· Vomiting and abdominal pain are symptoms of acute arsenic poisoning.
· Arsenic can also have an impact on children's cognitive development.
How are Heavy Metals eliminated by filtration?
Filtration works by passing only small particles through. The filter's "holes" should be smaller than the target contaminants. Heavy metals and other pollutants are unable to pass through in this manner.
What are the various filtration options or methods?
The principle of filtration remains the same regardless of how many stages are involved. It only allows water molecules to pass through, so contaminants are left behind. However, because of recent technological and engineering advances, there is more to it.
· 5-stage RO Plants
A full 5-stage reverse osmosis system, for example, has two pre-treatment processes before the main filter (where the heavy metals are removed).
Stage 1:The first stage could involve taking care of the "big guys." Dust, sludge, and sediments are removed here. As a result, the first stage filter may only be small enough to remove large particles.
Stage 2:The second stage could include the elimination of chlorine. This is primarily for membrane protection. The use of chlorine-free water will help to extend the useful lifespan of the core membrane (the 0.005-micron filter).
The removal of chlorine is also beneficial to human health because this substance can cause irritations and allergies, in both children and adults.
Stage 3:The core is the third stage. Lead, mercury, arsenic, and other heavy metals will be removed here.
The final two stages of the 5-stage process may be all about improving the odour and taste of the water.
· 2 or 3-stage RO Plants
Aside from 5-stage filtration systems, systems with only 2 or 3 stages are also available.
A 2-stage filter, for example, might have a 1-micron sediment filter and a 0.4-micron carbon filter. It is sufficient for the removal of lead, mercury, and other heavy metals.
A 3-stage filter, on the other hand, can take care of the taste. It is equipped with the same filters as the 2-stage filter. A third stage, however, improves the taste of water. This makes staying hydrated easier, especially on hot summer days.
As a result, heavy metals must be removed before they reach our glass of water. It's best to start early so that the cumulative effects can be avoided. It's especially important if we have children in the house.
Heavy metals will have the greatest impact on children because they are still developing. Even trace amounts of heavy metals can interfere with their brain and physical development.
How can we assist?
If you have any questions about wastewater treatment or water treatment to remove heavy metals from water or wastewater, or if you would like to discuss your specific needs, please contact the Netsol Water team right away. Our team is an expert in water treatment with over 10+ years of experience, and can help you tailor a solution to your specific requirements.