Destruction technologies

The following destruction processes have been approved:

Thermal oxidation category:

(i)   Liquid injection incineration;

(ii)  Reactor cracking;

(iii) Gaseous/fume oxidation;

(iv) Rotary kiln incinerators;

(v)  Cement kilns;

(vi) Municipal solid waste incinerators, for foams containing ozone-depleting substances (approved at the Fifth Meeting of the Parties);

(viii) Radio frequency plasma (approved at the Seventh Meeting of the Parties).

The following are the suggested regulatory standards for destruction facilities:

Pollutant                  Stack concentration

PCDD/PDCF           <1.0 ng/m³ (toxic equivalence using international method. Emission limits are expressed as mass per dry cubic metre of flue gas at 0°C and 101.3 kPa corrected to 11% O₂).

HCl                         <100 mg/m³

HF                          5 mg/m³

HBr/Br₂                   <5 mg/m³

Particulates              <50 mg/m³

Comments:              Frequency, method of sampling, and limit for the ODS that is being destroyed as recommended by national regulatory agencies.

CO            <100 mg/m³

Comments:              Continuous emission monitoring with one hour rolling average.

Comments:              Atmospheric releases of ODS shall be monitored at all facilities with air emission discharges (where applicable) to ensure compliance with the recommendations of the report of the ad hoc Technical Advisory Committee on Destruction Technologies.

(UNEP/OzL.Pro/4/15 Decision IV/11, para. 2).

(UNEP/OzL.Pro/5/12 Decision V/26).

(UNEP/OzL.Pro/4/15 Annexes VI and VII to Decision IV/11).

(UNEP/OzL.Pro/7/12 Decision VII/15, para. 2).

The Fourteenth Meeting of the Parties decided to approve the following destruction technologies for the purposes of paragraph 5 of Article 1 of the Protocol, in addition to the technologies listed in annex VI to the report of the Fourth Meeting and modified by decisions V/26 and VII/35:

(a)  for CFC, HCFC and halons: argon plasma arc;

(b)  for CFC and HCFC: nitrogen plasma arc, microwave plasma, gas phase catalytic dehalogenation and super-heated steam reactor;

(c)  for foam containing ODS: rotary kiln incinerator;

(UNEP/OzL.Pro/14/9 Decision XIV/6 para. 3).

The Fifteenth Meeting of the Parties decided to approve, for the purposes of paragraph 5 of Article 1 of the Montreal Protocol, the destruction technologies listed as “approved” in the table below, which were found by the Task Force on Destruction Technologies to meet the destruction and removal efficiencies set out therein.

Suggested substances for monitoring and declaration when using destruction technologies

* ITEQ – international toxic equivalency.

** Normal cubic metre.

*** TSP – total suspended particles.

(UNEP/OzL.Pro.15/9, Decision XV/9).