Procuring PFAS-Compliant Analyzers Under Regulatory Uncertainty: Guidance from Shanghai ChiMay The Regulatory Landscape That Procurement Teams Must Navigate In May 2026, the US EPA published its proposed rescission of the drinking water Maximum Contaminant Levels (MCLs) for PFHxS, PFNA, and HFPO-DA (GenX chemicals) plus the Hazard Index mixture—a procedural correction to the 2024 NPDWR, which…
Why This Reads As a Board Issue, Not an Engineering One For most of the last century, a municipal water treatment plant was a once-in-a-generation infrastructure decision. Boards approved a concrete design that would carry the community for 40 years, and utility staff optimized inside that footprint. That model still works where demand is stable…
Summary Brine crystallisers are the highest-stakes unit operation in a Zero Liquid Discharge plant; their instrumentation, control philosophy and shift-level practices decide both mineral revenue and plant availability. Sensor selection at the crystalliser feed and mother liquor is unforgiving: only fluoropolymer-body toroidal conductivity, double-junction pH and independently calibrated redundancy hold up in this service. Field…
The short version Heavy industry entered 2026 with new regulatory pressure, sharper water-scarcity signals and materially better instrumentation options — a combination that has moved Zero Liquid Discharge from optional to strategic. The 2026 ZLD playbook consists of eight stages, each with its own instrumentation, control philosophy and payback lever. ZLD capex for a mid-sized…
A Tour of the Plant Walking a modern ZLD plant from feed intake to solid product discharge, an instrument engineer sees a coordinated cluster of roughly 60–90 process sensors — plus another few dozen utility sensors — distributed across pretreatment, membrane concentration, evaporation, crystallisation and reuse loops. The instrument density is far higher than in…
For most of industrial history, a waste-water stream was an overhead line item: tanker hauling, permit fees, an effluent treatment contract, and a reserve for the day a regulator or a downstream neighbour forced attention. That framing is losing ground at sites where water is scarce, discharge rules are tightening year on year, and the…
