Read the water
Turbidity helps reveal how particulate conditions in the incoming water are changing. Read it alongside the organic signal to understand the coagulation duty.
Turbidity monitoring. Read particulate change.
Turbidity helps reveal how particulate conditions in the incoming water are changing. Read it alongside the organic signal to understand the coagulation duty.
Discuss your measurementsWhat the signal can tell you
A turbidity trend describes one part of the incoming-water story. It should not be used as a substitute for dissolved-organic information.
Put the information into context.
Connect the model
Compass uses incoming-water measurements within a model developed for the works to predict coagulant demand for the turbidity-removal objective.
Agree the evidence
Agree the sample location, NTU basis, operating range, reference method and relationship with the other measurements.
The measurement arrangement and control objective are agreed for the works. Performance is assessed against site evidence.
Compass data / illustrative interface
See the signal. See the decision.
Read incoming turbidity and dissolved organic carbon (DOC) alongside the calculated dose. In this example, the dose responds to rising organics even while turbidity falls.
Incoming turbidity06.8NTU · demo value
Incoming DOC05.2mg/L · demo DOCeq
Calculated dose38.4mg/L · demo value
Incoming turbidityIncoming DOCCalculated dose
EarlierTime →Now
Illustrative UI only. Fictional values; trends use separate relative scales. DOC is shown as an optical equivalent (DOCeq). Site-specific calibration and validation are required.
Read the incoming change, then check the treatment result.
A source-water event can alter particulate conditions before its effect appears further through the works. A useful review pairs the incoming trend with the dose history and treated-water record, using aligned sample times. This helps separate a change in the water from a change in the treatment response.
Does low turbidity mean low coagulant demand?
Not necessarily. Dissolved-organic conditions can change independently. Review both signals and the plant evidence before drawing a dosing conclusion.
Compass
Compass uses incoming-water measurements within a model developed for the works to predict coagulant demand for the turbidity-removal objective.