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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 dewatering process performance
   • Monitor test results and processes to maintain the parameters of operation.
   • Identify and report process faults and the operational condition of plant.
2. Control chemical use
   • Use, handle and store chemicals.
   • Determine and carry out chemical dosing.
   • Maintain chemical supply and usage records.
   • Select, fit and use required safety equipment, including personal protective equipment.
3. Operate and control dewatering processes
   • Carry out routine plant inspections.
   • Conduct and analyse process tests and determine performance against plant operational requirements.
   • Make integrated process adjustments to optimise system performance.
   • Collect, interpret and record process data.
4. Complete documentation
   • Compile reports from plant and system data.
   • Report observations outside defined parameters for further action.
5. Monitor dewatering process performance
   • Monitor test results and processes to maintain the parameters of operation.
   • Identify and report process faults and the operational condition of plant.
6. Control chemical use
   • Use, handle and store chemicals.
   • Determine and carry out chemical dosing.
   • Maintain chemical supply and usage records.
   • Select, fit and use required safety equipment, including personal protective equipment.
7. Operate and control dewatering processes
   • Carry out routine plant inspections.
   • Conduct and analyse process tests and determine performance against plant operational requirements.
   • Make integrated process adjustments to optimise system performance.
   • Collect, interpret and record process data.
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.

performing system calculations

monitoring test results and processes

identifying and reporting faults

conducting routine plant inspections

taking samples and performing basic tests including at least one of:

solids analysis

jar testing

sludge density

centrate clarity

dewatering process efficiency

preparing and applying chemical dosing

making basic process adjustments according to instructions, including at least one of:

loading rates

chemical dosing rates

dewatering polymers

centrifuge settings

collecting data and completing required documentation

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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

features and components of thickening and dewatering systems

theory of process operation

chemicals used for sludge conditioning including synthetic and organic polymers

chemical dosing processes

risk factors and potential hazards relating to thickening and dewatering systems

risk control requirements including safety equipment and safety data sheets

equipment operation, capacity and limitations

hazardous materials handling

environmental aspects of water and/or wastewater treatment

interpretation and use of safety data sheets

principles that form the basis of dewatering processes

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