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Engineering notes

Explainers written for the person who has to make the decision, not for the person approving the budget. No product pitches disguised as articles.

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Evaporator and crystalliser train in a zero liquid discharge plant

What zero liquid discharge really costs you

Zero liquid discharge is sold as a technology. It is really a pre-treatment decision — and the money is made or lost before the first evaporator.

Electrodeionization stack and mixed bed vessels in a demineralisation plant

EDI or mixed bed: which polisher fits your plant

Higher capital cost, lower running cost, no acid and caustic on site. The trade-off between electrodeionization and mixed bed, in numbers we can support.

Anaerobic membrane bioreactor tanks with external ultrafiltration units

High-COD effluent is a fuel bill, not a disposal bill

Aerobic treatment burns power to destroy organics. Anaerobic membrane treatment turns the same load into biogas, with up to 75% less sludge.

Planned

Coming next

Sample cards. Article slots already planned. The layout is final; these will be replaced as each piece is published.

Choosing between MLD and ZLD

A decision framework based on discharge consent, water balance and the value of the recovered salt. Sample card.

Why your membranes are fouling

Autopsy findings, feed analysis and cleaning regime — the three things that explain most membrane failures. Sample card.

The cheapest megawatt on your site

Waste heat recovery, energy recovery turbines and where the payback actually is. Sample card.

What a good analyzer package specification contains

Sample conditioning, hazardous area classification, FAT scope and the things specifications usually leave out. Sample card.

How export finance changes a project's shape

German content, eligible costs and why the technical scope determines the funding. Sample card.

Commissioning: the sequence that actually works

Utilities before process, water before the systems that consume it, and why instrumentation gets verified first. Sample card.

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