Environmental engineering

From chemical mixing tanks in water treatment to post-combustion flue-gas systems — where flow distribution and residence time decide the efficiency.

Common problems

Dead zones in the tank — the chemical does not make enough contact and treatment falls below design
Skewed gas flow ahead of the treatment unit — part of the cross-section is overloaded while the rest sits idle
Injection outside the temperature window — with SNCR, a temperature offset lets ammonia slip through unreacted
Local fouling and erosion — unplanned shutdowns for cleaning and repair

Why simulation is needed

This equipment is large, enclosed and runs continuously: its interior cannot be observed directly, and it cannot be stopped for experiments. Measurements at a few discrete points cannot establish the actual flow pattern.

Simulation reconstructs the whole flow, temperature and concentration field, so several retrofit options can be compared before investing in fabrication.

Simulation of flue-gas treatment equipment in environmental engineering — Flow field inside a flue-gas treatment unit — the basis for choosing injector positions.

Equipment & processes we handle

Wastewater treatment

Mixing and contact tanks (RTD analysis, dead-zone detection), settling tanks, bioreactors.

Flue-gas treatment

SOx removal with dry and wet FGD, NOx removal with SNCR and ozone, dust filters.

Waste-to-energy

Grate combustion chambers, temperature distribution, burnout and emissions control.

Simulation methods

Single-phase and multiphase turbulent flow, with residence-time distribution (RTD) analysis
Lagrangian droplet and particle tracking for urea, ammonia and lime slurry injectors
Chemical reactions with emission models, coupled to the temperature field
Conjugate heat transfer for equipment walls and heat-exposed zones

What you receive

An engineering report with flow, temperature and concentration fields at the important sections
A quantitative comparison between the current state and each retrofit option
Specific recommendations: injector positions, flow-guide plates, dimensional changes
Model files handed over so your team can re-run them when needed