engineering

Water Treatment & Purification

Clean water is civilization's most critical infrastructure. Explore the physics, chemistry, and biology of turning raw water into safe drinking water — from coagulation and sedimentation to disinfection and adsorption.

water-treatmentpurificationdisinfectionchlorinationsedimentationfiltrationcoagulationenvironmental-engineering

Water treatment engineering combines physical separation, chemical reaction, and biological control to transform source water — often turbid, contaminated, and microbiologically unsafe — into water that meets stringent drinking standards. The multi-barrier approach uses sequential processes, each targeting different contaminant classes, so that no single failure compromises public health.

These simulations model the core unit processes found in every modern treatment plant. Adjust chemical doses, flow rates, UV intensities, and settling velocities to see how removal efficiency, contact time, and breakthrough curves respond. Every equation comes from the environmental engineering literature used to design systems serving billions of people worldwide.

5 interactive simulations

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Activated Carbon Adsorption & Breakthrough

Model activated carbon adsorption using the Freundlich isotherm — adjust carbon dose, influent concentration, and flow rate to see breakthrough curves

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Chlorination & CT Disinfection Kinetics

Model chlorine disinfection using the CT concept — adjust dose, contact time, pH, and temperature to see log inactivation of pathogens

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Coagulation, Jar Test & Zeta Potential

Simulate coagulation chemistry — adjust coagulant dose, pH, and mixing intensity to model zeta potential reduction and floc formation

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Sedimentation & Stokes Settling

Model particle settling using Stokes' law — adjust particle size, density, and basin geometry to calculate settling velocity and removal efficiency

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UV Disinfection & Dose-Response

Model UV disinfection dose-response — adjust UV intensity, exposure time, and transmittance to calculate log inactivation of pathogens