Google Links

Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Monitor coagulation and flocculation processes
   • Monitor test results and processes to ensure compliance with the parameters of the operation.
   • Identify and report process faults and the operational condition of plant.
   • Collect and test samples.
   • Conduct jar tests and determine dosages.
2. Control chemical use
   • Use, handle and store chemicals.
   • Determine and apply chemical dosing according to plant processes based on jar testing.
   • Maintain chemical supply and usage records.
3. Operate and control coagulation and flocculation processes
   • Carry out routine plant inspections.
   • Collect process samples and conduct standard tests such as jar testing.
   • Carry out system adjustments and process calculations to improve system performance whenever water quality changes or process performance deteriorates.
4. Complete documentation
   • Compile reports from plant and system data.
   • Report observations outside defined parameters for further action.
5. Monitor coagulation and flocculation processes
   • Monitor test results and processes to ensure compliance with the parameters of the operation.
   • Identify and report process faults and the operational condition of plant.
   • Collect and test samples.
   • Conduct jar tests and determine dosages.
6. Control chemical use
   • Use, handle and store chemicals.
   • Determine and apply chemical dosing according to plant processes based on jar testing.
   • Maintain chemical supply and usage records.
7. Operate and control coagulation and flocculation processes
   • Carry out routine plant inspections.
   • Collect process samples and conduct standard tests such as jar testing.
   • Carry out system adjustments and process calculations to improve system performance whenever water quality changes or process performance deteriorates.
8. Complete documentation
   • Compile reports from plant and system data.
   • Report observations outside defined parameters for further action.

Performance Evidence

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.

taking samples and performing tests including at least one of:

flocculation growth and size

flocculation time

mixing time

mixing energy

pH

colour

turbidity

routine jar tests and associated timings

residual aluminium or iron

alkalinity

drop tests

dosage feed rate review and checks

producing logs and reports

preparing testing solutions and solutions strengths

performing process calculations including at least one of:

preparation of dosing solutions

jar test dosages

dry and liquid chemical feed rates

mixing intensity

preparing and applying chemical dosing

applying optimised jar test results in the process

conducting routine plant inspections

identifying and reporting system faults

making basic system adjustments including at least one of:

pH correction

chemical dosing

completing required documentation including at least one of:

routine plant inspection and safety checks

water quality sampling and test results

routine maintenance reports

chemical dosing calculations

process set point changes

water quality and safety incident reports

---

Knowledge Evidence

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the depth of knowledge demonstrated must be appropriate to the job context of the candidate.

process layout

process flash mix

flocculation process

chemicals used i.e. polymers, coagulants, flocculants and pH correction

features and components of coagulation and flocculation systems

process operations including:

chemical addition

flash mixing

flocculation

chemicals used for coagulation and flocculation

chemical dosing processes

risk factors and potential hazards related to coagulation and flocculation systems including:

aluminium and iron based coagulants

synthetic organic polymers

pH adjusting chemicals such as lime, soda ash, caustic soda

risk control requirements including safety equipment and safety data sheets (SDS)

operation of pumping and valving systems

control and communications systems

water testing procedures

effects of weather and conditions on operation of site or plant

procedures for storing and handling dangerous goods and chemicals

understanding risk management principles of ADWG and AGWR

jar testing dosage and calculations

---