Wastewater Treatment Blog
In-depth engineering guides on industrial wastewater treatment technologies. Written by the engineers who design, manufacture and commission these plants — not marketing copy.
DAF or Sedimentation? Which One, When?
A comparison by surface loading, space requirement, sludge dry solids and pollutant type — plus a scenario-based decision guide for choosing between flotation and settling.
Read moreWater Reuse and Zero Liquid Discharge (ZLD)
The UF + RO + evaporator + crystalliser chain explained step by step, with the levels of recovery, typical rates by sector and operating tips. Reuse is GESU's strategic focus.
Read moreWhat Is Reverse Osmosis (RO)?
Osmotic pressure, cross-flow, recovery and concentration factor; a table of typical design parameters and fouling/scaling/CIP troubleshooting.
Read moreWhat Is MBR? Membrane Bioreactor Technology
How an MBR works step by step, submerged/external and flat sheet/hollow fibre membrane types, typical values by sector, and effluent ready for reuse with MBR+RO.
Read moreWhat Are Coagulation and Flocculation?
Why colloids never settle: zeta potential, charge neutralisation, rapid/slow mixing (G value), how a jar test is run, and the five most common conditioning problems in the field.
Read moreWhat Is DAF? Dissolved Air Flotation Guide
The physics of flotation, the A/S ratio, micro-bubble size, surface loading and recycle rate, chemical conditioning and the operating problems most often seen in the field.
Read moreAll numerical ranges given in these articles are typical orders of magnitude found in the literature and in practice; they are not commitments. The exact design for a given plant is established by wastewater analysis, jar testing and, where appropriate, pilot work.
Go Deeper
Technology, product and sector pages that continue where the articles leave off.
The treatment technologies GESU engineers and manufactures.
GESU's flagship product: oil, grease and TSS removal, manufactured in-house.
Reuse of municipal and industrial-park wastewater for irrigation and secondary uses.
Sector-specific wastewater characteristics and treatment chains.
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