NZQA Expiring unit standard
Title
4303 version 7
Page 1 of 4
Explain environmental effects monitoring and waste treatment in the dairy industry
Level
Purpose
3 Credits 12
People credited with this unit standard are able to explain: sources and characteristics of dairy factory waste discharges and their potential effects on the environment; loss monitoring, environmental monitoring and data analysis; chemical and physical treatment systems for dairy factory wastewater; and the application of biological and land treatment systems used for dairy factory wastewater.
Classification Dairy Manufacturing > Dairy Environmental Management
Available grade Achieved
Explanatory notes
1 Organisational requirements refer to instructions to staff on policy and procedures which are documented in memo and/or manual format and are available in the workplace. These requirements include but are not limited to – site specific requirements, company quality management requirements, hygiene, health and safety, regulatory and legislative requirements.
2 Legislative requirements include but are not limited to Resource Management Act
1991, relevant codes of practice, and subsequent amendments.
3 Routine explanations and reports may be in everyday workplace language including mathematical language and some commonly used technical terms, be presented orally, be presented in writing using standard format, proforma, charts and diagrams, include mathematical and other information from several sources.
4 Assessment is to be made in the industry context, and should take place primarily on-the-job under normal working conditions.
5 Mathematical operations may include routine estimation and calculation and involve percentages, comparisons, and variations. Calculators may be used.
6 Descriptions of work practices must be in accordance with codes of practice and organisational requirements.
Primary Industry Training Organisation
SSB Code 101558

New Zealand Qualifications Authority 2020 New Zealand Qualifications Aut

NZQA Expiring unit standard 4303 version 7
Page 2 of 4
Outcome 1
Explain sources and characteristics of dairy factory waste discharges and their potential effects on the environment.
Evidence requirements
1.1 Waste minimisation is explained in terms of potential sources or areas for minimisation and effect on cost of treatment.
Range sources – product, water, chemical, packaging, energy.
1.2 Waste discharges are explained in terms of their characteristics.
Range waste discharges include but are not limited to – factory wastewaters, storm water, air emissions; characteristics include but are not limited to – nutrient levels, pH, temperature, volume, nitrogen oxides, sulphur oxides, particulates.
1.3 Waste discharges are explained in terms of their potential effects on the environment.
Range effects
– nutrient levels, colour and turbidity, noise, odours, visual effects; environment – waterways, atmosphere, land.
Outcome 2
Explain loss monitoring, environmental monitoring and data analysis.
Evidence requirements
2.1 Loss monitoring and environmental monitoring are explained in terms of the selection of appropriate analyses for a given type of dairy factory wastewater.
2.2 Monitoring is explained in terms of major sources of error in sampling, subsampling, flow measurement and analysis.
Outcome 3
Explain chemical and physical treatment systems for dairy factory wastewater.
Evidence requirements
3.1 Wastewater pre-treatment systems are explained in terms of considerations for further waste treatment processes.
Range systems – equalisation, neutralisation, milkfat removal, sedimentation.
Primary Industry Training Organisation
SSB Code 101558

New Zealand Qualifications Authority 2020 New Zealand Qualifications Aut

NZQA Expiring unit standard
3.2
4303 version 7
Page 3 of 4
Wastewater pre-treatment systems are explained in terms of the principles of operation and methods used for milkfat removal.
Range methods – fat traps, dissolved air flotation (DAF), chemically assisted DAF.
3.3 Wastewater chemical and physical treatment systems are explained in terms of the principles of operation of methods used for nutrient removal.
Range methods – chemical coagulation, flocculation, sedimentation, chemical precipitation.
Outcome 4
Explain the application of biological and land treatment systems used for dairy factory wastewater.
Evidence requirements
4.1 Basic biological treatment systems are explained in terms of application and performance.
Range biological treatment systems – aerobic, anaerobic; performance includes but is not limited to nutrient removal.
4.2 Land treatment systems are explained in terms of types of irrigation systems and their advantages and disadvantages.
Range irrigation systems
– fixed irrigation, travelling irrigators, aboveground lateral systems, border dykes.
Replacement information This unit standard has been replaced by unit standard
28663
This unit standard is expiring. Assessment against the standard must take place by the last date for assessment set out below.
Primary Industry Training Organisation
SSB Code 101558

New Zealand Qualifications Authority 2020 New Zealand Qualifications Aut

NZQA Expiring unit standard 4303 version 7
Status information and last date for assessment for superseded versions
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Process Version Date Last Date for Assessment
Registration
Review
1
2
28 April 1995
5 July 1999
31 December 2017
31 December 2017
Review
Revision
Revision
Rollover
3
4
5
6
28 May 2002
21 November 2002
13 June 2003
17 July 2009
31 December 2017
31 December 2017
31 December 2017
31 December 2017
Review 7 18 June 2015 31 December 2017
Consent and Moderation Requirements (CMR) reference 0022
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do
.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
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 (CMR). 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.
Primary Industry Training Organisation
SSB Code 101558

New Zealand Qualifications Authority 2020 New Zealand Qualifications Aut