A vibrant array of colorful pills and tablets, representing pharmaceutical waste or byproducts requiring effluent management.

Kiranjyot

July 18, 2025

Case Studies, Environmental

The Secret Sauce Of Effluent Management

One of India’s leading pharmaceutical companies, with a global presence in branded generics, reached out to us with a problem: the functioning of their ETP (Effluent Treatment Plant) was disturbed due to an increased hydraulic load, and they wanted us to help it operate efficiently.

Table of Contents

Our experts discovered that they had been consistently adding new product lines over the past five years.

Over time, not only had the effluent volume increased from 8-10 cubic metres a day to 15 cubic metres a day, but its characteristics had also become far more intense.

As a result, the existing microflora was unable to cope with the shock load.

Challenges

  1. Increased refractory organics due to hydraulic load
  2. Bio-reduction of refractory organics under low hydraulic retention time (HRT)
  3. Survival of biomass under high osmotic pressure (TDS load)

Table showing wastewater parameters (Flow, pH, COD, TDS) with inlet and outlet values for 2010 and 2014.

We formulated a treatment plan to address the challenges with the ETP facility without requiring any structural modifications.

The first step involved a Biocheck analysis to assess the health of the biological system, which was conducted in our DSIR-approved R&D laboratory by analyzing samples.

With data from the report, we were able to provide the client with all the necessary information about the physical characteristics and condition of the existing microflora.

Our experts determined that a bio-augmentation program in accordance with the Pollution Control Board (PCB) norms would be the optimal approach to maintaining the fluctuating biomass level while reducing refractory organic pollutants.

We recommended CleanMaxx, our consortium of encapsulated microorganisms with an increased shelf life that degrades refractory organics even under stringent conditions.

Flowchart of an ETP layout: Equalization Tank, Primary Clarifier, Aeration Tank (with CleanMaxx), Secondary Clarifier, Intermediate Tank.

The two-month-long program introduced Cleanmaxx in small doses via pre-assimilation.

The recirculation rate was increased to facilitate the heavy growth of microorganisms.

By maintaining an optimum dissolved oxygen (DO) level of 1.8-2.5 ppm and regulating minimal nutrient doses, we achieved an MLSS level of 2500-3800 ppm within two weeks of the program.

The results following treatment were immediate and impactful.

Results

COD Reduction efficiency increased to a 75-90% range, compared to 50-60% before the implementation of the bio-augmentation program.

A significant MLSS level was developed during the two-month treatment, and after one year, the MLSS levels were maintained at desired levels despite a high TDS load.

There was also a significant reduction in the TDS level due to the reduction in organic waste.

In conclusion, with CleanMaxx microbial technology, there were significant improvements to the performance of the biological system, including:

  1. Rapid MLSS development within 15 days
  2. COD reduction efficiency increased from 60% to 90%
  3. Desired MLSS was maintained even under a high TDS load
  4. Overall stabilisation of the biological system was achieved

Bar chart showing COD reduction in bioreactor after CleanMaxx addition, comparing inlet and outlet levels over 150 days.

The company was able to achieve the effluent discharge limits as per PCB norms after advanced tertiary treatment.

Our client was thrilled with the results, and we were only too happy to identify and solve their problem effectively.

Learn more about CleanMaxx Aero and how we can help you deal with any issue affecting your effluent treatment plant.

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