How to remove the COD (12000 ppm) of condensate water generated in pharmaceutical industry?

25 January 2023 1 9K Report

I have a water sample collected from the condensate of pharmaceutical industry post effluent treatment which still has a very high COD (>10000 ppm). How to reduce it to desirable range. I have used different AOPs as well such as H2O2, Cavitation, ozonation wither solo or in combination.

Mohamed Omar

The choice of method will depend on the specific characteristics of the condensate water and the desired level of COD removal. Generally speaking, the characteristics of condensate water generated in the pharmaceutical industry can vary depending on the specific process and treatment steps used in the production facility. However, some common characteristics of condensate water generated in the pharmaceutical industry include:

High COD (Chemical Oxygen Demand) levels: The condensate water can contain a high concentration of organic compounds, which can lead to high COD levels.

High TDS (Total Dissolved Solids) levels: The condensate water can contain a high concentration of dissolved solids, which can lead to high TDS levels.

pH variability: The pH of the condensate water can vary depending on the specific process and treatment steps used in the production facility.

Presence of microorganisms: The condensate water can contain a variety of microorganisms, including bacteria, fungi, and viruses.

High temperature and pressure: The condensate water can be generated at high temperature and pressure, which can affect the treatment and disposal options.

Presence of traces of active pharmaceutical ingredients (API) and excipients.

Presence of heavy metals, acids or alkalis.

some commonly used methods include:

Biological treatment: This method is considered one of the most effective ways to reduce COD in condensate water generated in the pharmaceutical industry. This process can be done in an aerobic or anaerobic system, depending on the availability of oxygen, and it involves using microorganisms to break down the organic compounds present in the condensate water.

Oxidation: This method involves using chemicals like hydrogen peroxide, potassium permanganate, or ozone to oxidize the organic compounds present in the condensate water. This process can be done in a batch or continuous mode.

Membrane filtration: This method involves passing the condensate water through a membrane filter to remove the organic compounds. This process can be done using methods like ultrafiltration, or microfiltration.

Adsorption: This method involves passing the condensate water through an adsorbent like activated carbon to remove the organic compounds.

Advanced oxidation process (AOP): This method involves using UV light or hydrogen peroxide to produce hydroxyl radicals which can degrade the organic compounds present in the condensate water.

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