A municipal biosolids polymer evaluation needs to connect the dewatering result with the solids actually captured and handled. This is a measurement framework, not a report of a verified project or a promised disposal-cost reduction.
Establish a matched baseline
Record sludge origin, feed dry solids, flow and storage or digestion changes. Use paired samples and an agreed evaluation period. Wet cake mass alone cannot establish a saving if feed load or solids capture changes at the same time.
Keep centrifuge performance in context
Track cake solids, centrate quality, throughput and relevant machine settings. Observe alarms and interruptions rather than excluding inconvenient runs. Changes to machine operation must remain within approved limits and be recorded separately from chemical changes.
Compare cationic PAM candidates supplied with documented preparation instructions. Ask Xinqi Polymer to identify the exact trial grade and product basis so repeat deliveries can be connected to the accepted test.
Build the cost comparison carefully
Include chemical consumption, preparation, operating time and actual disposal terms. Avoid assuming that a wetter or drier cake changes every cost proportionally. Identify fixed charges and any thresholds in the relevant service agreement.
Document the scope of acceptance
Keep the demonstrated feed range, sampling method and operating settings with the purchasing record. Define what triggers a confirmation test after a process or supply change. An evidence-based comparison supports a purchase decision without attributing invented outcomes to a real treatment works.