pH & alkalinity correction

Caustic / lime / acid dose for a target alkalinity change.

Flow (التصرف)

Reagent

Change in alkalinity (as CaCO₃)mg/L

Strength%Densitykg/L

11.5

tonne/month

Caustic soda 30%

Reagent (as 100%): 24 mg/L
As product: 80 mg/L
Per day: 384 kg
Liquid volume: 288.72 L/day · 8.66 m³/mo

Method

D₁₀₀ = factor × ΔAlk ; NaOH 0.80 · lime 0.74 · HCl 0.73 (mg per mg/L as CaCO₃)

Reference: Davis, Water & Wastewater Engineering; Crittenden (MWH).

This is an alkalinity (as CaCO₃) estimate. Final pH is NOT linear in dose and depends on your water's buffer capacity — confirm by on-site titration. Coagulation also consumes alkalinity — size against the net deficit.

Estimated use: about 11.52 tonne/month of ChimiArt Caustic soda 30% to raise alkalinity by 30 mg/L (flow 4800 m³/day).

Want to confirm this on your actual water? We can run a free jar test or send the grade's spec sheet.