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Chemical Compatibility

Wastewater Tank — Caustics/Bases

Moderate evidence

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Named chemicals

Caustic dosing chemical (NaOH-class)

What LibertyCES's vendor documentation shows

Same wastewater-pH case study uses caustic dosing chemical into the same polyethylene tank system.

Materials documented for this service

  • Polyethylene

Products cited for this service

Snyder Wastewater/Chemical Feed Station Tanks

Real Specifications

Caustic dosing equipmentProMinent Fluid Controls metering pumps dose caustic into the Snyder 4,500-gallon double-wall polyethylene holding tank under closed-loop PLC controlautomated-wastewater-ph-treatment.md
Target compliance rangeCaustic dosing brings inflow from pH 3.3 to a consistent 5.5-6.5 compliant discharge rangeautomated-wastewater-ph-treatment.md
PLC controllerProMinent Dialog X PLC controller manages closed-loop dosingautomated-wastewater-ph-treatment.md
Install / Failure Note

Dosing caustic without closed-loop pH feedback risks overshooting past the 5.5-6.5 compliant window into an over-alkaline discharge — a new compliance failure, not a fix. The case study's non-contact radar level sensor plus inline pH sensor exist specifically to prevent that overshoot.

The caustic dosing chemical is the corrective input, not a fire-and-forget one — dose too little and the stream stays out of compliance, dose too much without closed-loop feedback and you've created a new pH-overshoot violation on the other end of the scale. The same tank and dosing hardware handle both acidic and caustic wastewater streams; what changes is the control logic around them, not the tank material.

Every material and product claim on this page traces to real, vendor-published documentation on file with LibertyCES. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm current specifications with the manufacturer and request a spec review before final specification.

FAQ

Is Wastewater Tank compatible with Caustics/Bases?

Same wastewater-pH case study uses caustic dosing chemical into the same polyethylene tank system. This is moderate evidence.

What materials are documented for Wastewater Tank in Caustics/Bases service?

Materials documented for this service: Polyethylene. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm with a spec review before final specification.

What specific Caustics/Bases chemicals does this cover?

Named chemicals in this documentation: Caustic dosing chemical (NaOH-class).

What products are cited for Wastewater Tank in Caustics/Bases service?

Documented examples include Snyder Wastewater/Chemical Feed Station Tanks.

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