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Elements and Performance Criteria

  1. Assess granular media filtration process performance
  2. Investigate granular media filtration plant or equipment operation
  3. Investigate the operational options for process optimisation
  4. Develop and record a plan for process optimisation
  5. Assess granular media filtration process performance
  6. Investigate granular media filtration plant or equipment operation
  7. Investigate the operational options for process optimisation
  8. Develop and record a plan for process optimisation

Performance Evidence

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. The candidate must be assessed in as least one type of process listed in the Range of Conditions. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.

conducting system investigation and reporting on operational or control system problems

coordinating filter inspection, sampling and testing

conducting trend analysis for long-term filter monitoring

performing calculations to provide data for the analysis and development of options and solutions, including backwash rates and filtration rates

determining filter run and backwash profiles and times

interpreting a range of complex and technical documents, including at least one of:

regulatory, legislative, licensing and organisational requirements

codes and standards

specifications

organisational policies

analysing problems and recommending appropriate remedial solutions

reviewing existing filtration process performance with reference to historical data, initial specifications and differences in incoming water quality

identifying data deficiencies and organising additional data collection through appropriate sampling and testing

assessing faults and incident reports and investigating the status of filtration plant components and media

investigating potential changes to filtration operational processes to identify possible optimisation strategies

planning trials to test the performance of the determined filtration optimisation options

compiling recommendation 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.

principles that form the basis of granular media filtration processes

types of filters and their range of applications, conditions for use and manufacturers’ requirements

backwash principles and optimisation

filter run profiles

the range and performance of filter aids

filter media properties and selection

filter inspection and sampling

principles of filter maintenance, including:

filter cleaning

double backwashes

surface cleaning

lancing

caustic washing

filter ripening and turbidity breakthrough

pilot filters

pumping and valving systems

range of appropriate measuring and testing procedures