29964 Demonstrate Knowledge of Treatment Processes for Drinking-Water Treatment

Explanatory notes

1 Legislation and references relevant to this unit standard include: Health and Safety at Work Act 2015, Resource Management Act 1993, Hazardous Substances and New Organisms Act 1996;

Drinking-Water Standards for New Zealand, 2005 (Revised 2008). Ministry of Health, Wellington.

Outcomes and evidence requirements

Outcome 1

Demonstrate knowledge of separation processes for drinking-water treatment.

Rangeincludes coagulation and flocculation.

Evidence requirements

1.1 Legislation and standards relevant to separation processes are described in terms of their purpose, effect on the process, and consequences of non-compliance.

1.2 The purpose of separation is described in terms of the characteristics of raw water and its effect on the treatment process.

1.3 Process options for separation are described in terms of mode of operation, inputs, outputs, and advantages and disadvantages.

1.4 Tests and performance measures applicable to separation processes are described in terms of efficiency and downstream effects.

1.5Options for disposal of end products of separation processes are described in terms of environmental impact, health risks, and efficiency.

Outcome 2

Demonstrate knowledge of filtration processes for drinking-water treatment.

Evidence requirements

2.1 Legislation and standards relevant to filtration processes are described in terms of their purpose, effect on the process, and consequences of non-compliance.

2.2 The purpose of filtration is described in terms of the characteristics of raw or clarified water, and its effect on the treatment process.

2.3Process options for filtration are described in terms of mode of operation, inputs, outputs, and advantages and disadvantages.

2.4Tests and performance measures applicable to filtration processes are described in terms of efficiency and downstream effects.

2.5Options for disposal of end products of filtration processes are described in terms of environmental impact, health risks, and efficiency.

Outcome 3

Demonstrate knowledge of disinfection processes for drinking-water treatment.

Evidence requirements

3.1Legislation and standards relevant to disinfection processes are described in terms of their purpose, effect on the process, and consequences of non-compliance.

3.2The purpose of disinfection is described in terms of its effect on drinking-water, and public health.

3.3Process options for disinfection are described in terms of mode of operation, inputs, outputs, and advantages and disadvantages.

3.4Tests and performance measures applicable to disinfection processes are described in terms of efficiency and downstream effects.

3.5By-products of disinfection processes are described in terms of public health risks and their control.

Status information and last date for assessment for superseded versions

This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.

Please note

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Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards.

Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMRs). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.

Comments on this unit standard

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