Subtitle:.
The discharging of industrial waste water and cooling water


Section 4.2.2.
The discharging of industrial waste water not containing hazardous substances


Article 4.2.2.1. Translation not available

Subsection 4.2.2.1.
The discharging of industrial waste water not containing hazardous substances into ordinary surface waters [...]

Article 4.2.2.1.1.

The general conditions for discharges into ordinary surface waters and/or for discharges of industrial waste water containing no hazardous substances in the outlying area to be individually optimised are as follows:

1

if the industrial waste water to be discharged contains such a quantity of pathogenic germs that the receiving water might become dangerously polluted as a result of the discharge, the waste water must first be disinfected;

2

the pH value of the discharged industrial waste water may not be over 9 or below 6.5; if the discharged industrial waste water originates from the use of ordinary surface water and/or groundwater and if the natural pH value of this surface water and/or groundwater is over 9 or below 6.5, one may use this natural pH value for determining the limit values for the pH of the discharge;

3

the biochemical oxygen demand in five days at 20C in the industrial waste water discharged may not exceed 25 mg oxygen demand per litre;

4

the temperature of the industrial waste water discharged may not exceed 30C; if it is explicitly stated in the licence and with an outside temperature of 25C or more, or if the cooling water is taken in at a temperature of 20C or more, the waste water discharged may have a temperature of up to 35C insofar as this does not cause the temperature of the receiving surface water to exceed the value indicated in the environmental quality standards;

5

in the industrial waste water discharged, the following concentrations may not be exceeded:

a)

0.5 millilitres per litre for settlable solids (during stationary sedimentation for two hours);

b)

60 milligrams per litre for suspended solids;

c)

5 milligrams per litre for perchloroethylene-extractable apolar substances;

d)

3 milligrams per litre for the sum of anionic, non-ionic and cationic surface-active agents;

6

if the industrial waste water discharged originates from the use of ordinary surface water and/or groundwater, the values set down in sub 3 and sub 5 of the present Article may be increased by the concentration value in the water taken in;

7

a representative sample of the industrial waste water discharged must not contain oils, fats or other floating substances in such quantities that the presence of a floating film can be established unequivocally; when in doubt, the presence of the film can be established by pouring the sample into a separating funnel to examine whether the two phases can be separated.


Subsection 4.2.2.2.
Discharge of industrial waste water containing no hazardous substances into the public sewage system of a municipality for which a zoning plan has not yet been finalised.

Article 4.2.2.2.1. [...]

Article 4.2.2.2.2. [...]

Subsection 4.2.2.3.
The discharging of industrial waste water not containing hazardous substances into the public sewage systems

Article 4.2.2.3.1.

In a municipality for which the municipal zoning plan has been finalised, the discharge of industrial waste water containing no hazardous substances in the central area, the collectively optimised outlying area and/or the outlying area to be collectively optimised must satisfy the following general conditions:

1

the pH value of the industrial waste water discharged must be between 6 and 9.5;

2

the temperature of the industrial waste water discharged may not exceed 45C;

3

the dimensions of the suspended solids present in the industrial waste water discharged may not exceed 1 cm. These substances do not hinder the proper operation of the pumping and treatment stations by their structure;

4

the industrial waste water discharged does not contain any dissolved, flammable or explosive gases, or products that could cause such gases to be released. The industrial waste water discharged does not cause any dissemination of effluvia that harm the environment;

5

the following concentrations may not be exceeded in the discharged industrial waste water:

a)

1 g/l suspended solids;

b)

0.5 g/l substances extractable in petroleum ether.

6

unless explicitly provided for in the licence, the industrial waste water discharged may not contain substances that:

a)

constitute a hazard for the maintenance personnel of the sewer system and water treatment installation;

b)

may damage or block the pipes;

c)

constitute an impediment to the proper working of the pumping and water treatment units;

d)

may cause serious pollution of the receiving surface water or may seriously pollute the receiving surface water in which the water from the public sewer is discharged;

7

assessment of the discharge of industrial waste water at a sewage treatment installation is governed by the criteria stated in Articles 2 and 3 of the Order of the Government of Flanders of 21 February 2014 establishing the rules for the discharge of industrial waste water at a public sewage treatment installation.


Article 4.2.2.3.2. In a municipality for which the municipal zoning plan has been finalised, the discharge of industrial waste water containing no hazardous substances in the outlying area to be individually optimised must satisfy the conditions of Article 4.2.2.1.1.

Article 4.2.2.3.3. In the case of existing licensed or reported discharges, those conditions of the present subsection which differ in a stricter sense from the situation as it was before the municipal zoning plan was finalised are to come into force on the first day of the 29th month after finalisation of the municipal zoning plan.

Section 4.2.3.
The discharging of industrial waste water containing one or more hazardous substances.


Article 4.2.3.1. Translation not available

Section 4.2.4.
Discharging of cooling water


Article 4.2.4.1. Translation not available