Chemical Treatment For Wastewater
Why it is important to choose a suitable method for wastewater treatment?
80% of wastewater goes back to the environment without treatment causing environmental damage and sickness.
Chemical Wastewater Treatment:
It is the use of chemical reactants to break down pollutants. It is perfect wastewater with high chemical toxin content, such as the wastewater from chemical or pharmaceutical manufacturing and textile manufacturers. It is also ideal for removing the heavy metals in the wastewater produced from mining. The chemical effluent treatment plants (ETPs) that treat these wastes use chemical treatment methods.
what are the Types of Pollutants that Chemical Wastewater Treatments Remove?
industries like mining, steel manufacturing, and oil and gas extraction and refining — will produce wastewater with toxic soluble metals. These industries are likely to use chemical treatment.
contaminants chemical waste management treatments can remove:
- Dyes: Wastewaters from paper mills and textile plants.
- Paints and solvents.
- Metal residues: wastewater often include cobalt, iron, lead, aluminum, copper, mercury, nickel, and zinc. Chemical treatment breaks down the metals’ chemical structures and makes them harmless to the environment.
What are the steps of chemical treatment?
- Coagulation: It is adding chemical substances that neutralize the charge of suspended solids and facilitate their coagulation between colloidal particles.
For example (ex: CHIMI FLOC FR 4011 which is FeCl3 (ferric chloride 40%/ Iron (III) chloride) that is produced by CHIMIART the biggest company for coagulants in the MENA region since 1977.
- Flocculation: flocculation means adding chemical substances called polymer that consists of acrylamide subunits and are characterized by their high molecular weight. Its role is to combine with the coagulated waste particles to form larger, heavier, and stable flocs that can be easily removed.
Polymers are divided according to their charge:
+ Cationic polymer “positively charged”
+ Anionic polymer “negatively charged”
Author:
Lack of water management, one of the most influential problems faced by humans presently, has been directly impacting public health, because of the pervasive wastage of land, surface water, as well as groundwater, which are among the most basic sustainability needs.
According to World Health Organization, by 2025, half of the world’s population will be living in water-stressed areas.A paradigm shift is now required in water management all over the world not only to prevent the further damage to sensitive ecosystems but also for the effective management of wastewater.
Water and wastewater treatment chemicals are playing an important role in providing clean water and preventing from various diseases.The use of traditional water treatment methods is declining over time, owing to the rapid industrial development in various sectors.
To meet the emerging demand for water management, major water industry players are emphasizing on developing innovative treatment products for local as well as the global sites.
Zero liquids discharge technologies, resource recovery, and smart water solutions are certain innovations which are going to abruptly revolutionize the water treatment industry.
The integration of emerging technologies with traditional water treatment infrastructures is expected to help various public and private stakeholders to further enhance their capabilities for effective wastewater treatment and recovery of waste energy resources.Some of the key players in the global water and wastewater treatment chemicals market are Akzo Nobel N.V, Albemarle Corporation, SOLENIS, SUEZ, Ecolab, and Kurita Water Industries Ltd.
