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23346 Demonstrate knowledge of treatment methods for hazardous waste

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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 Extractives Industry Training Organisation

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-acceptance-
     criteria-apr01.pdf.




                                                                  New Zealand Qualifications Authority 2010
                                                                                  23346 version 1
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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        criteria – constituents, quantity, oxidation state.

1.2         Legislative requirements for treating and disposing of hazardous waste are
            explained in accordance with the Resource Management Act and bylaws.

            Range        bylaws of at least two local authorities.

1.3         Criteria for treating and disposing of hazardous waste are explained in terms of
            company requirements.

            Range        employee competence, staffing levels, standard operating
                         procedures.

1.4         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 2010
                                                                                 23346 version 1
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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        change – physical, chemical, biological;
                         excludes waste minimisation techniques;
                         at least two of each change.

2.2         Physical processes are described in terms of method and waste substances
            suitable for each method are identified.

            Range        sedimentation, centrifugation, flocculation, heavy metal separation,
                         soil washing, chelation, filtration, ion exchange, encapsulation, one
                         other.

2.3         Stabilisation processes are described in terms of method and waste substances
            suitable for each method are identified.

            Range        Pozzolan, vitrification, thermoplastic microencapsulation,
                         polymerisation, solidification.

2.4         Chemical processes are described in terms of method and waste substances
            suitable for each method are identified.

            Range        neutralisation, precipitation, hydrolysis, oxidation, reduction,
                         catalytic oxidation, catalytic dehydrochlorination, alkali metal
                         dechlorination.

2.5         Biological processes are described in terms of method and waste substances
            suitable for each method are identified.

            Range        aerobic, activate sludge, bioreclamation, white rot fungus.

2.6         Thermal processes are described in terms of method and waste substances
            suitable for each method are identified.

            Range        incineration, autoclave.




                                                                  New Zealand Qualifications Authority 2010
                                                                               23346 version 1
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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 Extractive Industry Training Organisaton info@exito.org.nz if you
wish to suggest changes to the content of this unit standard.




                                                                New Zealand Qualifications Authority 2010

				
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