BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Annexes
� Artificial channels: The maximum mean value temperature in any section must not exceed
35 °C
� Sea and estuary/delta zones of non significant rivers: The wastewater temperature must
not exceed 35°C and further than 1000 meters from the discharge point the temperature
increase in the water body must be 3 °C.
(2) These limits do not apply to wastewaters discharged into the sea (assimilation is provided
for sea coastal waters).
(3) Industrial wastewaters discharged into sensitive areas must respect the total phosphorous
and total nitrogen limits of 1 mg/l and 10 mg/l, respectively.
(4) The general limit 5000 cfu/100 ml is recommended. The competent authority will establish
the most appropriate limit according to environmental, hygienic and sanitary situation of the
water body and to existing uses.
(5) The toxicity test is obligatory. In addition to Daphnia magna test, acute toxicity tests can be
done on Ceriodaphnia dubia, Selenastrum capricornutum, bioluminescent bacteria or other organisms
such as Artemia salina for salt containing wastewater effluents or other organisms that
will be indicated. The worst test result must be considered. A positive test is not straight penalised,
but the following actions are required: a deep analytical investigation, the search of the
toxicity sources and their removal.
10. LUXEMBURG
No information supplied.
11. THE NETHERLANDS
The Netherlands has two main framework environmental acts: the ‘Environmental Management
Act’ and the ‘Surface Water Pollution Act’. These acts together provide the framework
for issuing environmental permits and for setting the conditions of the permits. The acts comply
with the requirements of the IPPC Directive and integrated permitting is guaranteed by a coordinated
licensing procedure from the competent authorities. Both framework acts govern a
number of Decrees and Regulations that provide requirements with regard to potentially polluting
activities.
The Netherlands emission Regulations (NeR) are concerned with process emissions to air and
function as guidelines for the issuing of licences and/or for the adjustment of licensing conditions.
The NeR has been used for guidance in the granting of licences from 1 May 1992.
In the NeR, concentration standards for different substances are given, which constitute upper
limits for distinct point sources, depending on mass flow. Furthermore, in ‘special regulations’
rules departing from the ‘general emission standards’ for certain industries or specific installations
are given.
The emissions standards in the NeR are not legally binding and the NeR does not replace existing
binding agreements. However, if the licensing authority wishes to depart from the NeR, the
reasons for doing so must be stated explicitly in the preamble to the licence.
Voluntary agreements
Voluntary agreements or covenants (in Dutch: Convenanten) are declarations of intent on the
implementation of environmental policy for certain industrial sectors. The declarations of intent
are agreements between the authorities and the industry. Participation in a covenant gives the
authorities and companies the advantage of a more transparent, coherent and predictable path of
environmental improvement and investments. The covenants are applied in two fields:
� general environmental performance on ‘traditional’ pollutants
� energy efficiency.
430 Waste Water and Waste Gas Treatment