The Commission implementing the decision establishing the Best Available Technique (BAT) Conclusions for this sector has been published on the Official Journal of the European Union. This Best Available Technique REFerence (BREF) document covers the entire chemical sector and provides information on aqueous and/or gaseous releases from chemical installations and the good news is that odour management is a key issue in the Common Waste Water and Waste Gas Treatment/Management Systems in the Chemical Sector.
As mentioned before, the BAT Conclusions (from now on, 'the Conclusions') have been published on an official journal. That makes this document a law.
There are three BAT techniques approved for odour Management for this industry: the BAT 6, the BAT 20 and the BAT 21.