Interactive engineering calculators, standards, and knowledge for Water & Environmental professionals.
10 interactive calculators, organized by engineering discipline
Calculate air dispersion concentration from a stack using AERMOD or SCREEN3 methodology. Ensure compliance with air quality standards.
Calculate the dissolved oxygen sag curve using the Streeter-Phelps equation. Assess water quality and ensure compliance with environmental standards.
Calculate the hydraulic retention time (HRT) for constructed wetlands to ensure effective nitrogen removal in wastewater treatment.
Estimate the annual landfill gas generation rate using the EPA AP-42 First-Order Decay Model. Plan and manage your landfill more effectively.
Calculate the optimal diameter and head loss for leachate collection pipes in municipal solid waste landfills. Ensure efficient and safe operation.
Calculate the minimum required soil cover thickness for landfill caps based on infiltration rate, hydraulic conductivity, and other parameters. Ensure compliance with environmental regulations.
Estimate the VOC emission rate from a storage tank using AP-42 Section 7.1 equations. Essential for air quality management and regulatory compliance.
Convert calcium and magnesium concentrations from mg/L to meq/L for water hardness analysis. Essential for water treatment and scaling assessment.
Calculate the required volume of an activated sludge reactor for BOD removal. Ensure optimal design and compliance with environmental standards.
Calculate the volume storage requirement and outflow peak flow for a stormwater detention basin. Ensure compliance with local regulations and enhance water management.
