Inline pH Adjustment System
pH is logarithmic. A small amount of caustic or acid can swing the water past your target in a second, and a poorly mixed dosing setup will do exactly that. Local pockets of high and low pH create scale, precipitate metals in the wrong places, trigger overdose-underdose oscillation in the control loop, and waste chemical. AquaShear’s inline pH adjustment system distributes acid or caustic uniformly in a single pass, so the pH probe reads what the whole stream is actually doing.
What pH Adjustment Actually Requires
Adjusting pH reliably means two things, delivering the right amount of chemical, and mixing it fully before the sensor sees the result. Dose right but mix wrong and the pH reading bounces. The control loop chases a signal that doesn’t reflect the bulk stream. You end up overdosing to compensate, then the next batch is too high, and the cycle runs on.
For a caustic dose into a low-pH stream, fast distribution matters because the reaction happens the moment the two fluids contact. Any pocket of undiluted caustic hits a localized pH of 13 or 14 and precipitates metals or scales surfaces before it ever sees the rest of the flow.
For a caustic dose into a low-pH stream, fast distribution matters because the reaction happens the moment the two fluids contact. Any pocket of undiluted caustic hits a localized pH of 13 or 14 and precipitates metals or scales surfaces before it ever sees the rest of the flow.
Why Standard pH Mixing Setups Fall Short
In-tank agitators with pH probes work, but they need large residence volume and they struggle at turndown. Static mixers give acceptable performance at design flow and degrade everywhere else. Both leave dead zones. Both require downstream pipe length before the pH reads stable. And both sit in corrosive service, which means bearings, seals, and impellers on a replacement schedule.
Dosing pumps alone don’t mix. They meter.
Dosing pumps alone don’t mix. They meter.
How AquaShear Adjusts pH in a Single Pass
The AquaShear chamber has no moving parts. Opposing streams of process water and pH-adjustment chemical collide through precision-aligned nozzles and generate a controlled vortex that distributes the chemical uniformly across the pipe cross-section. One pass, full mix, stable pH reading at the sensor.
For caustic, acid, and lime slurry service, AquaShear builds the unit in 316 stainless steel with Delrin nozzle disks and Viton gaskets. That combination handles sodium hydroxide, sulfuric and hydrochloric acid, magnesium hydroxide, and the temperature swings common in pH control service. Units handle up to 250°F and 150 PSIG.
For caustic, acid, and lime slurry service, AquaShear builds the unit in 316 stainless steel with Delrin nozzle disks and Viton gaskets. That combination handles sodium hydroxide, sulfuric and hydrochloric acid, magnesium hydroxide, and the temperature swings common in pH control service. Units handle up to 250°F and 150 PSIG.
Proven in Acid and Caustic Service
AquaShear units have run in acid, caustic, and chlorine service for over 20 years with no moving parts to replace. Quarterly maintenance is a 15-minute visual check.
Trusted By
pH Adjustment Applications We Size For
AquaShear handles pH control across a wide range of industries.
Mining flotation circuits and heap leach pH control
Acid mine drainage neutralization
Agricultural irrigation water conditioning
Municipal and industrial wastewater pH compliance
Drinking water corrosion control
Metals precipitation in wastewater treatment
Process water and cooling water pH
Food and beverage CIP neutralization
AquaShear handles both acid-side and caustic-side chemistries with the appropriate materials package.
What We Need to Size Your System
Every AquaShear unit is built to the application. For a pH adjustment quote, the AquaShear team will ask for the following.
- Flow rate and operating pressure
- Starting pH, target pH, and buffering capacity of the stream
- Chemical being dosed and feed concentration
- Water chemistry, including dissolved solids, metals, and temperature
- Downstream pH sensor location and control strategy
- Materials preference or regulatory requirements
Chamber sizes run from 1″ to 14″, with 316 stainless steel construction and matched nozzle and gasket materials standard for acid and caustic service. Lead time runs 6 to 12 weeks.
Request a pH Adjustment Quote
Tell the AquaShear team about the application and they’ll size the system. Pricing starts at $1,500 and scales with size, materials, and configuration.