Chemically Enhanced Sand Filtration (CESF)

Clear Water’s core design and treatment stems from active treatment systems utilizing Chemically Enhanced Sand Filtration (CESF).

This core technology for removing high concentrations of suspended solids, hydrocarbons, and heavy metals from stormwater has been incorporated at a number of facilities and frequently proves to be the best solution for the project site upon further evaluation of water quality characterization and long term operational practices. Clear Water’s systems are designed to meet the specific needs of each individual site with a suite of failsafe options to maximize efficient stormwater treatment, and minimize system bypass events.

Bill Nye Explains CESF

Clear Water Services had the opportunity to work with Bill Nye on a video about Advanced Stormwater Treatment utilizing Chitosan-Enhanced Sand Filtration (CESF). 

Additional Resources

Our work at Clear Water Services is informed not only by our own experiences and research, but by countless studies on water treatment technology as well. The advantages of Chitosan-Enhanced Sand Filtration (CESF) over traditional methods have been well-documented in the literature. Below, we’ve compiled a brief list of publications which are freely available. We hope you can see for yourself why CESF has become the preferred stormwater treatment technology for so many localities and applications.

Evaluation of chitosan as a natural coagulant for drinking water treatment

Natural organic matter removal by coagulation during drinking water treatment: a review

Treatment of Tunnel Construction Wastewater Using Chitosan Coagulant

Chitosan Application for Treatment of Beni-Amrane’s Water Dam

Coagulation Properties of Biodegradable Chitosan-CTA Coagulants in Turbidity Removal.

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