Ozone can come from a multitude of sources and is frequently used as part of a full water treatment system. However, leftover ozone poses a possible health risk and can harm finished goods, as well as processing and fabrication equipment.
UV removal of ozone has the advantage of not requiring chemicals that may leave residuals. Furthermore, ozone dissociation with UV may aid in the oxidation of some TOCs.
UV removal of ozone
After secondary treatment, ozone disinfection is commonly utilized in medium to large-sized plants. Aside from disinfection, another prominent application for ozone in wastewater treatment is odour control. Although, this technology is widely acknowledged in India, ozone disinfection is the least employed approach.
Ozone treatment can produce higher levels of disinfection than either chlorine or UV, the capital and maintenance costs are not comparable with existing options. As a result, ozone is generally utilized sparingly, and only when other options are ineffective.
Purification of water is a strict need for businesses such as pharmaceutical, construction, food and beverage, cosmetics, and other biochemical sectors, in order to generate the best quality products. Before using the available water, they must ensure that it has been recycled, filtered, and cleaned.
In such a case, having a strong industrial UV water disinfection system is critical, if they wish to create the purest water for industrial use.
Various industries that utilize oxidation
- Organic waste oxidation
- Cyanide decomposition
- Petrochemical oxidation of ground water
- Precipitation of heavy metals
- Effluents from pulp and paper manufacturing
- Effluents from textile mills
- Textile dye, starch, and FOG (Fat, Oil, Grease) removal
- Elimination of pesticides, herbicides, and insecticides
- Domestic waste BOD reduction
- Secondary municipal waste water treatment
- Heavy metal precipitation in mining
- Organic compound oxidation
What are the applications of ozone?
Full-scale ozonation systems have been utilized to treat effluent from the textiles, pharmaceutical, and chemical industries, as well as landfill leachates. The primary pollutants in these waters are refractory organics, which can be classified as:
- In landfill leachates, there are humid compounds (brown or yellow in colour), and absorbable organic halogens.
- Coloured aromatic compounds frequently contain significant levels of metal ions, in textile effluent.
- Toxic or biocidal compounds used in the pharmaceutical and chemical industries.
- Surfactants used in the cosmetic and other industries.
- COD and colourful compounds in pulp solutions and appropriate productions.
The ozonation stage is generally handled between two biological systems, because to the complicated nature of COD.
When visible radiation is absorbed by dissolved materials or reflected by suspended solids, water appears coloured. Coloured water is commonly seen in dye facilities, textile mills, food and beverage processors, slaughterhouses, and other industrial plants.
Many companies have already begun to use ozone for colour removal, which is more potent and safer. The best results are obtained when water has been treated to reduce BOD, COD, and suspended solids (SS) levels, allowing the ozone reaction to be used primarily for colour removal.
After chemical or biological pre-treatment, wastewater is ozonated at a dosage ranging from 50 mg/lit to 150 mg/lit. Colour can be diminished by 90 to 98% at these settings. The dosage reduces chemical oxygen demand (COD) by around 45% at the same time.
Coagulation and turbidity removal is also improved
Ozone oxidation of dissolved organic compounds produces polar and charged molecules, which can form precipitates when combined with Polyvalent Aluminium or Calcium. The addition of up to 0.5 ppm of ozone to surface water reduces turbidity, improves settleability, and reduces the quantity of particles.
This process, known as pre-ozonation, destabilizes the colloid, reducing the quantity of coagulant required to generate a clear filtrate. Ozone is useful against a wide range of water treatment issues.
How can we assist?
Netsol Water is a renowned manufacturer of water and wastewater treatment plants.We are committed to providing high-performing wastewater treatment systems and disinfection systems, to assist industrial enterprises with their water, wastewater, and sewage requirements.