How to Perform a Jar Test for Water Pollutants
A jar test is a simple and effective way to evaluate whether a filtration media can remove contaminants from polluted water before implementing a full-scale treatment system. By testing a representative water sample, facilities can assess potential pollutant removal performance and determine whether a media is suitable for their application.
Why Conduct a Jar Test?
Jar testing helps identify how effectively a filtration media can remove contaminants from water under controlled conditions. The results can provide valuable insight into the treatment of:
- Industrial process water
- Contaminated groundwater
- Wastewater streams
- Surface water sources
- Other water pollutant concerns
While a jar test cannot replicate every field condition, it serves as a practical screening tool before investing in a larger treatment system.
Materials Needed
- To perform a jar test, you will need:
- Approximately 2 liters of contaminated water
- A clean glass container
- Hydrosil® removal media
- Water testing equipment or laboratory analysis capabilities
Step 1: Establish Baseline Water Quality
Test the contaminated water sample to identify the pollutants present and their concentrations. Record the results to serve as a baseline for comparison after treatment.
Step 2: Prepare the Filtration Media
Place the Hydrosil media in a glass container and rinse it with tap water four times to hydrate the media and remove any fine particles. Allow excess water to drain.
Step 3: Add the Contaminated Water
Pour the contaminated water into the container until it reaches the top of the media bed. Do not fill the container above the media level.
Step 4: Allow Contact Time
Allow the water and media to remain in contact for approximately 15 minutes so the media can interact with and remove contaminants.
Step 5: Analyze the Treated Water
Separate the water from the media and test the treated sample using the same methods as the baseline test. Compare the results to determine the effectiveness of the media and the level of contaminant reduction achieved.
Interpreting Jar Test Results & Disposal
If contaminant levels are reduced after the 15-minute contact period, the media may be suitable for treating similar water conditions. Additional testing may be recommended before full-scale implementation. Dispose of used media and treated water in accordance with all applicable local, state, and federal regulations.
Need Help Evaluating Water Treatment Media?
Hydrosil provides filtration media solutions for contaminant removal, groundwater treatment, industrial water treatment, and environmental remediation applications. If a jar test or pilot study is not available for your project then Hydrosil can utilize historical information and run a theoretical calculation to evaluate your project needs. Contact our team to discuss your water quality challenges and determine the best treatment approach for your specific application.
