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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. Assess process
   • Review existing process performance data.
   • Review existing operational processes with reference to manufacturer and plant designer specifications.
   • Identify the impact of influent quality on treatment process.
   • Identify additional sampling and testing required for valid evaluation of current process performance.
   • Review existing fault reports and other relevant plant asset information.
   • Investigate the operational status of plant components.
2. Improve process
   • Investigate the cause of effluent quality issues.
   • Investigate the operational status of the wastewater treatment process.
   • Assess the effectiveness of process control strategies.
   • Identify treatment process conditions for optimising the growth of beneficial microorganisms.
3. Report on process
   • Compile report on current status.
   • Make recommendations on optimisation options.
4. Assess process
   • Review existing process performance data.
   • Review existing operational processes with reference to manufacturer and plant designer specifications.
   • Identify the impact of influent quality on treatment process.
   • Identify additional sampling and testing required for valid evaluation of current process performance.
   • Review existing fault reports and other relevant plant asset information.
   • Investigate the operational status of plant components.
5. Improve process
   • Investigate the cause of effluent quality issues.
   • Investigate the operational status of the wastewater treatment process.
   • Assess the effectiveness of process control strategies.
   • Identify treatment process conditions for optimising the growth of beneficial microorganisms.
6. Report on process
   • Compile report on current status.
   • Make recommendations on optimisation options.

Range Statement

Activated sludge processes include:	sequencing batch reactors (SBR) intermittent decant extended aeration (IDEA) Bathurst Box oxidation ditches
Nutrient removal processes include:	biological nutrients removal fermentation pre-fermenters

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Performance Evidence

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. The candidate must be assessed preparing recommendation reports on at least one 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.

identifying wastewater microorganisms

selecting measures to optimise the growth of beneficial microorganisms

identifying a range of wastewater microorganisms, and their general characteristics and types of problems caused

identifying effluent quality and selecting process control strategies to optimise the growth of beneficial microorganisms

preparing reports outlining the optimum treatment for various microorganisms including measures to ensure validity

performing various calculations to provide data for the analysis and development of options and solutions, including at least one of F:M ratio, MCRT

return and wasting rates

preparing and applying chemical dosing as required

reviewing existing activated sludge or BNR treatment process performance with reference to historical data, differences in raw water quality and plant configuration

identifying data deficiencies

assessing fault reports and investigating the current operational status of activated sludge or BNR treatment process plant components

investigating current and potential chemical addition practices

planning trials to test the performance of the determined activated sludge or BNR treatment process optimisation options

identifying the general characteristics of different types of microorganisms

identifying wastewater characteristics that impact on microorganism growth

identifying the problems caused by microorganisms in specific wastewater treatment processes

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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.

types, lifecycle, characteristics of wastewater microorganisms

operational problems caused by wastewater microorganisms

effluent quality problems caused by wastewater microorganisms

properties and mode of action of chemical additives

principles that form the basis of activated sludge treatment processes

principles that form the basis of BNR-activated sludge treatment processes, including nitrification and de-nitrification, enhanced biological phosphorous removal

types of activated sludge and BNR-activated sludge treatment processes

activated sludge and BNR microbiology

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