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Guidelines to Statutory Order on the Licensing of Waste Water Discharges

21. Schedule 1

This schedule applies to all substances belonging to the families and groups listed below, except those considered irrelevant due to their low risk of toxicity, persistence and bioaccumulation.

  1. Organic halides and substances capable of forming organic halides in an aquatic environment.

  2. Organic phosphorus compounds.

  3. Organic tin compounds.

  4. Substances that may be carcinogenic (likely to cause cancer), mutagenic or teratogenic (likely to cause foetal malformation) in or via an aquatic environment.

  5. Mercury and mercury compounds.

  6. Cadmium and cadmium compounds.

  7. Mineral oils and hydrocarbons.

  8. Cyanides.

Schedule2

21.1 Load reduction requirements according to class of treatment

Class of
treatment

21.1.1 BI5

Total phosphorus

Nitrification
SOP 95% 90% 90%

SO

95%

  

90%

OP

90%

90%

  

O

90%

    

O: Load reduction, organic substances

P: Load reduction, total phosphorus

SO: More stringent requirements for reduction of organic substances and nitrification

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