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Waste Acceptance Testing

The Landfill Directive requires that before waste can be sent to landfill all of the properties of the waste that determine its suitability for landfill must be known. The introduction of the Waste Acceptance Criteria (WAC) aims to obtain greater control of the waste disposed of at landfills, in order to minimise the impact of this form of disposal. Wastes can only be accepted at a landfill if they meet the relevant Waste Acceptance Criteria (WAC) for that type of landfill. There is a significant cost implication if the waste is classified as hazardous, so waste producers - including those producing waste from construction sites - need to determine the classification of their waste before disposing of it to landfill.

Waste Acceptance Testing In Depth

At ACS Environmental Testing we can offer an efficient and reliable analysis service using various test leaching procedures specified by the Environment Agency. The leachate produced by this procedure is analysed, and the results from some of these tests can then be compared with Waste Acceptance Criteria (WAC) to determine the appropriate class of landfill to accept the waste
For full Waste Classification a WAC test and a contaminant suite (e.g. ENV2) on the solid material are required.

 

Leachate Preparation

At ACS Environmental Testing the following leachate preparation methods are available.

 

  • Leachate preparation (single step L/S 2 test) - BS EN 12457-1
  • Leachate preparation (single step L/S 10 test) - BS EN 12457-2
  • WAC leachate preparation (two-step L/S 2 plus L/S 8 test) - BS EN 12457-3
  • Up flow percolation test - CEN/TS 14405
  • pH dependence leaching test (initial acid/base addition) - CEN/TS 14429
  • pH dependence leaching test (continuous pH control) - CEN/TS 14997
  • Tank test - EA NEN 7375

 

Waste Analysis (Solids)

The following parameters are tested from the solid material:-

 

  • Total Organic Carbon
  • Loss on Ignition
  • BTEX (Benzene, Touluene, Ethylbenzene & Xylene)
  • PCB (Polychlorinated Biphenols) (7 x congeners)
  • Mineral Oil (TPH) (Total Petroleum Hydrocarbons)
  • Total PAH (Polyaromatic Hydrocarbons)
  • pH

 

Eluate Analysis

The following parameters are tested from the prepared leachate:-

 

  • pH
  • Temperature
  • Conductivity
  • Total Dissolved Solids
  • Phenol Index
  • Dissolved Organic Carbon
  • Metals
    (As) Arsenic
    (Ba) Barium
    (Cd) Cadmium
    (Cr) Chromium
    (Cu) Copper
    (Hg) Mercury
    (Mo) Molybdenum
    (Ni) Nickel
    (Pb) Lead
    (Sb) Antimony
    (Se) Selenium
    (Zn) Zinc
  • Anions
    Chloride
    Sulphate
    Fluoride
     

 

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