Influent Sample & Analysis

This free online influent water analysis tool from Reynolds & Bauhm gives an instant, physics-based assessment of how treatable an industrial or municipal wastewater is, and which treatment approach suits it — no sign-up, free and confidential. Enter your influent sample laboratory analysis — pH, COD, BOD₅, total suspended solids (TSS), oil & grease, ammonia, total nitrogen and phosphorus, alkalinity and salinity — together with the design flow, and the influent water analysis calculator returns an indicative treatability score, biodegradability classification, organic load, oxygen demand, nutrient balance, buffering capacity, a parameter signature profile and a recommended treatment direction.

The engineering basis

• Organic strength & mass loading — COD and BOD₅ classify the stream from low to very-high strength; loads in kg/day are computed by mass balance from concentration and flow.
• Biodegradability — the BOD₅:COD ratio indicates how amenable the effluent is to biological treatment versus physico-chemical or advanced oxidation.
• Oxygen demand — actual oxygen requirement from carbonaceous (≈1.1 kg O₂/kg BOD) and nitrogenous (4.57 kg O₂/kg N) demand, after Metcalf & Eddy / WEF.
• Nutrient balance — the BOD:N:P ratio against the 100:5:1 target shows whether nutrient dosing or nutrient removal is required for discharge consent.
• Alkalinity & buffering — nitrification consumes 7.14 mg CaCO₃ per mg ammonia-nitrogen; the tool flags whether alkalinity supplementation is needed.
• Settleability versus flotation — a Stokes’-law settling velocity, density-corrected for salinity, helps choose sedimentation, lamella clarification or dissolved-air flotation.
• Salinity — total dissolved solids and chloride drive biological inhibition, oxygen-transfer efficiency and materials selection.

Discharge standards & industries

Required parameter sets are mapped to the UK Environment Agency, EU Urban Waste Water Treatment Directive (91/271/EEC), Australian EPA / ANZECC and US EPA discharge frameworks. The assessment is applied across food and beverage, dairy, meat and poultry, brewery and distillery, oil & gas produced water, chemical, pharmaceutical, textile, municipal and mining wastewaters.

This is an early-stage scoping tool. Final treatment selection, system sizing and specification are confirmed by Reynolds & Bauhm engineers following laboratory analysis and, where appropriate, on-site treatability or pilot testing.