Environment and Water Simulators

How to Use

1. Select your simulation type: air quality modeling, emission dispersion, ventilation analysis, water treatment process, or stormwater management
2. Input process parameters—for emissions dispersion enter stack height (m), exhaust velocity (m/s), temperature differential (K), and ambient wind speed; for water treatment specify flow rate (m³/h), influent concentration (mg/L), and treatment residence time (min)
3. Configure categorical filters (cat-filter) to isolate specific pollutants, treatment stages, or environmental zones, then execute simulation to generate concentration profiles, removal efficiency curves, and compliance reports

Worked Example

Industrial wastewater treatment plant: influent ammonia concentration 45 mg/L, design flow 500 m³/h, activated sludge basin residence time 6 hours. Apply nitrification filter selecting cat-filter for biological treatment stage. Simulator calculates ammonia removal rate of 92% with final effluent 3.6 mg/L, confirming compliance with discharge limit of 5 mg/L. Stack emissions case: chemical facility stack diameter 1.2 m, exhaust temperature 120°C, ambient 15°C, wind speed 3.5 m/s. Ground-level SO₂ concentration at 500 m downwind: 0.8 ppm, acceptable under EPA one-hour standard of 75 ppb when accounting for atmospheric dispersion using Gaussian plume model.

Practical Notes

1. Apply cat-filter to separate point-source emissions from fugitive dust; stormwater modeling requires separate categorical treatment since first-flush effects concentrate pollutants in initial 12–25 mm rainfall depth
2. Ventilation simulations in enclosed spaces (e.g., parking garages, industrial workshops) use air changes per hour (ACH)—6 ACH minimum for CO removal; coordinate with exhaust stack height to prevent short-circuiting
3. Desalination reverse-osmosis units operate 40–85% recovery; higher recovery increases concentrate salinity and scaling risk; cross-flow velocity typically 0.3–0.6 m/s to minimize membrane fouling