BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Annexes
of substances which are not separately regulated elsewhere witha concentration
of more than 1 mg/l is exceeded or less than 1 mg/l via targeted measures
20 g/t
The load level refers to the capacity of the organic target products. It does not apply to the application of
substances.
Other substances
Qualified random sample or
2-hour composite sample [mg/l]
Mercury 0.05 0.001
Cadmium 0.2 0.005
Copper 0.5 0.1
Nickel 0.5 0.05
Lead 0.5 0.05
Total chromium 0.5 0.05
Zinc 2 0.2
Tin 2 0.2
The requirements in column I apply to waste water flows from the manufacturing, further processing or application
of these substances. The requirements in column II refer to waste water flows not originating from
the manufacturing, further processing or application of these substances but which are nevertheless contaminated
with such substances below the concentration levels in column I.
(2) Upon compliance with the AOX requirements and the general requirements pursuant to part
B, the requirements of Appendix 48, part 10 shall also be deemed to have been met.
(3) The AOX requirements shall not apply to iodo-organic substances in waste water from the
manufacturing and bottling of X-ray contrast media.
(4) For adsorbable organic halogens (AOX) and the substances limited in paragraph (1), number
2, the total load per parameter in 0.5 or 2 hours shall be limited in the water discharge
licence. The respective total load is derived from the sum of the individual loads of the
separate waste water flows. The total load which must not be exceeded refers to the concentration
in the qualified random sample or 2-hour composite sample and the volumetric
flow of waste water in 0.5 or 2 hours corresponding to sampling.
(5) A waste water flow may only be blended with other waste water, subject to the furnishing
of proof that the load of total organically bonded carbon (TOC) in this waste water flow ascertained
for the site of occurrence is reduced by 80 % overall. This requirement shall not
apply where the residual TOC load discharged from the respective waste water flow into
waterbodies does not exceed 20 kilograms per day or 300 kilograms per year or 1 kilogram
per tonne of production capacity of the organic target product. When proving the reduction
in load, in the case of physico-chemical waste water treatment plants, the TOC elimination
level of such plants shall be used as a basis, whereas in the case of biological waste water
treatment plants, the result of a study pertaining to number 407 of the Annex to Article 4
shall be used as a basis.
E. Requirements on the waste water at the site of occurrence
(1) For chromium VI, a concentration of 0.1 mg/l in the random sample shall be adhered to.
(2) For volatile organically bonded halogens, a concentration of 10 mg/l in the random sample
shall be adhered to. This requirement shall be deemed to have been met, provided it is
achieved prior to the inlet into a sewage system without prior risk of leakage losses and
without the waste water having been diluted.
F. Requirements for existing discharges
(1) For existing discharges of waste water from installations which were lawfully in operation
prior to 1 January 1999 or whose construction had lawfully commenced by this date, the
provisions in parts A, B, C and D shall only apply insofar as no requirements to the contrary
are specified in paragraphs (2) to (5).
(2) Notwithstanding part B, proof of compliance with the general requirements in a waste water
register must only be provided for 90 % of the parameter-related total loads in each
case. The use of waste water-free techniques to generate a vacuum and for waste air purification
must only be tested for the parameters specified in parts D and E. Additional testing
with respect to other parameters is unnecessary.
(3) The requirements of part C pertaining to COD shall not apply to waste water from the
manufacture of polyacrylonitrile.
414 Waste Water and Waste Gas Treatment