Water Professionals is the personal, non-commercial knowledge platform of Dr.-Ing. Markus Meier (Düsseldorf). Focus: thermodynamically sound thinking on ozone, pure oxygen, cavitation/AOP, PFAS and CO₂ neutralization — vendor-neutral and without commercial intent.
Topics I write about
Ozone & O₂ transfer
Transfer rates, sidestream dosing and energy metrics for biological and quaternary treatment.
- SOTE / pressure-drop behaviour
- Air vs. pure oxygen
- Injection technologies compared
Quaternary treatment notes
Micropollutant targets, ozone demand and integration into existing plant operation.
- Load cases & sizing sketches
- By-products / bromate risks
- CAPEX/OPEX perspectives
Cavitation & AOP
Hydrodynamic cavitation with ozone and related AOP pathways for persistent contaminants.
- Reactor concepts compared
- Kinetics observations
- Pilot experiences from the literature
PFAS / PFOS destruction
Technical framing of oxidative and hybrid destruction routes — distinct from adsorption-only options.
- Technology comparison
- Limits & verification
- How operators weigh options
CO₂ neutralization of alkaline wastewater
Gentle pH control with industrial CO₂ instead of mineral acids — including sequestration / CCUS perspective.
- Chemistry & dosing concept
- Salting vs. HCO₃⁻ buffering
- Carbon-crediting overview
Critical reading of vendor claims
How I read bids, tenders and technology claims with an engineering eye.
- Typical assumptions in offers
- Risks & data quality
- Where data beats marketing
How these topics take shape
Exchange & questions
Questions, criticism or your own field experience on these topics? A short, free exchange by email is always welcome — with no commercial expectation on either side.
Start a non-binding technical exchange →
Related article: CO₂ sequestration & carbon crediting in wastewater