The full name of IECS is Industrial Effluent Characterization Study.

This test is previously known as WWCS (Waste Water Characterization Study)

As its name has already suggested, you refer to IECS to know your raw wastewater’s or treated industrial effluent’s characteristics.

Why Do You Need An IECS?

From IECS report, you will know the important parameters of your samples, such as pH, Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS) and heavy metal contents.

From these parameters, you can monitor the performance of your current effluent treatment plant, which helps you to decide if you need to enhance or increase the capacity of your current plant.

IECS is also used to design and buy off new treatment plants and is needed for submission to the local government bodies.

What Are Inside An IECS Report?

An IECS report typically contains important points below:

  • Identification of Your Sampling Site, which includes the name, address and type of industrial activities of your company
  • Objective of the Study, for example, for quality monitoring or as a requirement for submission to the Department of Environment (DOE)
  • Manufacturing Process Flow, which summarizes the manufacturing activities from the start to the generation of effluent
  • Study Methodology, which includes the formulae and apparatus used, as well as the photos of sampling points
  • Results and Discussion, which discusses the outcome of the lab report and analysis on-site, as well as to identify non-compliance parameters
  • Suggestion and Conclusion, which discusses further improvements that could be carried out such as capacity upgrading, addition of equipment etc.
  • Appendix and Reference, which includes the analytical data from the lab. Important parameters in the lab reports include the pH, Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS) and heavy metal contents such as arsenic, cadmium, nickel, mercury, chromium, zinc, and lead.

Procedure To Conduct IECS

Below is an example of how an IECS is carried out, however, production operational characteristics will lead to some differences from site to site:

You will collect an effluent sample every hour for 8 hours continuously for a minimum duration of 3 days.

During this hourly collection, you will also record the sample’s flow rate, PH and temperature.

At the end of the 8 hours, you will mix all samples into one composite sample, which is then grabbed, well-preserved and sent to a qualified lab for testing.

How to Ensure Accurate Sampling Procedure

Your production line needs to run normally and smoothly without any disruptions, for example, planned or unplanned downtime / major machine breakdown.

If your factory runs 24 hours continuously, you are suggested to collect an effluent sample every hour for 24 hours continuously for a minimum duration of 3 days.

You also need to ensure that your water samples are not diluted unnecessarily, for example, with used water from major floor cleaning or machine cleaning. That being said, you should avoid rainwater from flowing into the effluent drains and collection points.

You also need to store your samples well, for example, keeping them away from high temperature.

What Do You Need To Be Aware of When Conducting IECS

A factory can have more than one collection point depending on the quantity of production effluent discharge points. For example, you have two collection points in a food processing factory that has one nugget processing line and one potato fries processing line.

Engineers will use the data from all these lines to design an effective effluent treatment plant.

Why Engage Us For Your IECS Study

Our engineers have more than 10 years of experience in conducting IECS studies for companies in different industries (food processing, paper mill, ink printing, chicken slaughtering, noodles, plating, galvanizing and rubber glove factories).

We provide consultation and following-up services whenever necessary.