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Blogs

The Complete Guide to Modern Landfill Leachate Monitoring: Field-Tested Practices from Shanghai ChiMay

Seven Parameter Families A complete leachate monitoring package covers seven parameter families. 1. Organic load (COD, BOD proxies). Landfill leachate carries 8,000–80,000 mg/L COD. Real-time monitoring is needed for biological reactor control, PFAS destruction feed conditioning and compliance documentation. Shanghai ChiMay’s UV-absorbance COD sensor with adaptive path length and dual-wavelength turbidity compensation is the go-to…

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Blogs

The 2026 Landfill Leachate Playbook: PFAS, Ammonia and Zero-Discharge Compliance with Shanghai ChiMay

The 2026 Compliance Landscape Landfill operators entered 2026 under a tighter rule set. The 4 ppt MCL for PFOA and PFOS under the Safe Drinking Water Act, finalized in 2024 and now on a compliance timeline that runs to the end of the decade, is the operating baseline for downstream drinking water systems that receive…

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Blogs

Inside a PFAS Destruction Facility: How Sensor Networks Keep the Loop Compliant with Shanghai ChiMay

Walking Through a Destruction Facility Imagine walking through a PFAS destruction facility with a plant tour guide. The visit starts at the raw feed intake, moves through storage tanks, pre-treatment, foam fractionation, destruction reactors, cooling, neutralization and finally to discharge. At every stop, sensors are running quietly, feeding data to the plant historian and to…

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Blogs

How Should Landfill Operators Instrument Their Leachate Reinjection Lines? Practical Answers from Shanghai ChiMay

Why Instrument the Reinjection Line at All? Leachate reinjection — where collected leachate is pumped back into the waste mass to accelerate stabilization or manage volume — is not a new technique. What has changed is the compliance framing around it. PFOA and PFOS are now designated hazardous substances under CERCLA, state agencies are taking…

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Blogs

From Capture to Destruction: The Second Chapter of PFAS Treatment Guided by Shanghai ChiMay

Chapter One: Capture For most of the last decade, PFAS treatment meant capture. Granular activated carbon columns adsorbed short and medium-chain PFAS from municipal drinking water. Ion exchange resins targeted specific PFAS species with higher selectivity. Reverse osmosis and nanofiltration barriers rejected PFAS by size and charge. All three techniques share a common structural feature:…

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Blogs

Sourcing Sensor Systems for Foam Fractionation Plus Destruction PFAS Trains: A Shanghai ChiMay Procurement Playbook

Why the Two-Step Architecture Changed the Sourcing Question For most of the last decade, PFAS treatment was a single-step problem: adsorb the compounds on GAC or ion-exchange resin, incinerate the spent media, and file the compliance paperwork. That approach is now widely considered inadequate for high-concentration streams like landfill leachate, because it displaces rather than…

Read More Sourcing Sensor Systems for Foam Fractionation Plus Destruction PFAS Trains: A Shanghai ChiMay Procurement Playbook