23346 version 1
Page 1 of 4
Demonstrate knowledge of treatment methods for hazardous waste
Level
5
Credits
30
Purpose
This unit standard is for people working in the specialist area of hazardous
resource recovery and disposal.
People credited with this unit standard are able to: explain criteria for treating
and disposing of hazardous waste; demonstrate knowledge of processes for
treating hazardous waste; and evaluate the suitability of a hazardous waste
treatment process for use in New Zealand.
Subfield
Solid Waste
Domain
Hazardous and Special Waste Management
Status
Registered
Status date
25 October 2007
Date version published
25 October 2007
Planned review date
31 December 2012
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
NZ Motor Industry Training Organisation (Incorporated)
(MITO)
Accreditation and Moderation Action Plan (AMAP) reference
0114
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
References relevant to this unit standard include:
Resource Management Act 1991;
local authority bylaws;
Management of Hazardous Waste, 2000, Centre for Advanced Engineering,
available at http://www.caenz.com.
Landfill Acceptance Criteria for Wastes with Hazardous Properties: Issues and
Options, available at http://www.mfe.govt.nz/publications/waste/landfill-acceptancecriteria-apr01.pdf.
 New Zealand Qualifications Authority 2016
23346 version 1
Page 2 of 4
2
Definitions
Company procedures means the documented methods for performing work activities
and include health and safety, environmental, and quality management requirements.
They may refer to manuals, codes of practice, or policy statements.
Hazardous waste refers to waste that:
Contains hazardous substances at sufficient concentrations to exceed the minimum
degrees of hazard specified by Hazardous Substances (Minimum Degrees of
Hazard) Regulations 2000, or
Meets the definition for infectious substances included in the Land Transport Rule:
Dangerous Goods 2005 and NZS 5433: 1999 Transport of Dangerous Goods on
Land, or
Meets the definition for radioactive material included in the Radiation Protection Act
1965 and Radiation Protection Regulations 1982.
PCB means polychlorinated biphenyls classified as UN 2315.
PCP refers to pentachlorophenol, a chemical historically used as an anti-sapstain
fungicide for short-term surface protection of sawn timber, often in conjunction with
boron treatment.
Elements and performance criteria
Element 1
Explain criteria for treating and disposing of hazardous waste.
Performance criteria
1.1
Criteria for treating and disposing of hazardous waste are explained in
accordance with Management of Hazardous Waste.
Range
1.2
Legislative requirements for treating and disposing of hazardous waste are
explained in accordance with the Resource Management Act and bylaws.
Range
1.3
bylaws of at least two local authorities.
Criteria for treating and disposing of hazardous waste are explained in terms of
company requirements.
Range
1.4
criteria – constituents, quantity, oxidation state.
employee competence, staffing levels, standard operating
procedures.
Explanation for treating and disposing of hazardous waste identifies disposal
methods recommended by the government in accordance with Management of
Hazardous Waste.
Range
includes but is not limited to – asbestos, PCBs, pesticides, PCP
waste, radioactive waste, clinical wastes.
 New Zealand Qualifications Authority 2016
23346 version 1
Page 3 of 4
Element 2
Demonstrate knowledge of processes for treating hazardous waste.
Performance criteria
2.1
Treatment processes are defined in terms of types of change effected.
Range
2.2
Physical processes are described in terms of method and waste substances
suitable for each method are identified.
Range
2.3
neutralisation, precipitation, hydrolysis, oxidation, reduction,
catalytic oxidation, catalytic dehydrochlorination, alkali metal
dechlorination.
Biological processes are described in terms of method and waste substances
suitable for each method are identified.
Range
2.6
Pozzolan, vitrification, thermoplastic microencapsulation,
polymerisation, solidification.
Chemical processes are described in terms of method and waste substances
suitable for each method are identified.
Range
2.5
sedimentation, centrifugation, flocculation, heavy metal separation,
soil washing, chelation, filtration, ion exchange, encapsulation, one
other.
Stabilisation processes are described in terms of method and waste substances
suitable for each method are identified.
Range
2.4
change – physical, chemical, biological;
excludes waste minimisation techniques;
at least two of each change.
aerobic, activate sludge, bioreclamation, white rot fungus.
Thermal processes are described in terms of method and waste substances
suitable for each method are identified.
Range
incineration, autoclave.
 New Zealand Qualifications Authority 2016
23346 version 1
Page 4 of 4
Element 3
Evaluate the suitability of a hazardous waste treatment process for use in New Zealand.
Range
any one of the processes in the range statements in element 2, excluding
incineration.
Performance criteria
3.1
The process is evaluated in terms of location and volume of hazardous waste
and proximity to treatment facility.
3.2
The health and safety impacts of the process are identified and evaluated in
terms of compliance with legislation.
3.3
The process is evaluated terms of surveyed community aspirations, local
authority bylaws, and compliance with the Resource Management Act.
3.4
The business prospects of the process are evaluated in accordance with
investor specified profit requirements.
Range
prospects – short term, long term.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP 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
Please contact the NZ Motor Industry Training Organisation (MITO) info@mito.org.nz if
you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016