BVT-Merkblatt zu Abwasser- und Abgasbehandlung
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BVT-Merkblatt zu Abwasser- und Abgasbehandlung

BVT-Merkblatt zu Abwasser- und Abgasbehandlung BVT-Merkblatt zu Abwasser- und Abgasbehandlung

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06.12.2012 Aufrufe

Annexes signed by the aforementioned environmental expert; this certificate is kept available for the perusal of the supervisory official; a copy of the certificate will be forwarded by the operator to the Environmental Licence Department. § 2. All containers must be provided with a permanent leak detection system. This obligation does not apply for containers of reinforced thermoset synthetics or stainless steel located outside a water abstraction area or a protected zone, and of which the individual water content capacity amounts to less than 5000 l, or less than 10000 l if these containers are for the storage of P3 and/or P4 products. The leak detection system must detect a leak inside an interstitial space formed either by an additional, solid or flexible impervious inside or outside casing, or by an impervious coat on the walls and the bottom of the excavation, and must meet the corresponding provisions of appendix 5.17.3. § 3. For the installation of a metal container with an individual water content capacity from 5000 l, or for the storage of P3 and/or P4 products from 10000 l and the associated ducts: 1. in a water abstraction area or a protected zone type I or II, or 2. in an area surrounding electrical conductors where major stray currents can be present, the corrosiveness of the soil and of the filling-in soil must be specified and categorised by an environmental expert accredited in the discipline soil corrosion according to the method mentioned in appendix 5.17.5. Here the corrosiveness of the soil at the deepest point in the place where the metal container is to be installed, or the filling-in soil is to be categorised as ‘barely corrosive’, ‘moderately corrosive’, ‘corrosive’ or ‘highly corrosive’. The determining of the corrosiveness may not take place under extreme circumstances of drought or frost. The provisions of this paragraph may be departed from if the corrosiveness of the soil and filling-in soil has already been determined during the last five years or when without a prior soil corrosiveness investigation cathodic protection is applied. The application of this cathodic protection must take place under the supervision of an environmental expert accredited in the discipline soil corrosion. § 4. Cathodic protection: 1. if the result of the inspection mentioned in § 3 is ‘corrosive’ or ‘highly corrosive’, cathodic protection must be applied 2. if the result of the examination mentioned in § 3 is ‘moderately corrosive’, it may initially be decided to not install cathodic protection. In this case, corrosion monitoring on the basis of permanent or periodic potential measurements must be provided for; with a potential measurement more positive than -500 mV compared to a Cu/CuSO4 reference electrode, indicating possible corrosion or stray currents, cathodic protection must be applied 3. if the result of the inspection specified in § 3 is ‘barely corrosive’ and the container is adequately cladded, cathodic protection is not required. The cathodic protection must bring the whole surface of the container, including the metal ducts (if this proves necessary), to a potential of -850 mV or a greater negative value measured with respect to a Cu/CuSO4 reference electrode. In anaerobic soils his potential must amount to at least -950 mV. § 5. The containers must be covered by a layer of earth, sand or another adapted inert material at least 50 cm thick. Measures must be taken to prevent the passage of vehicles or the storage of goods above the containers, unless these are protected by a non-flammable and sufficiently resistant floor. 384 Waste Water and Waste Gas Treatment

Art. 5.17.2.5 § 1. Storage in containers placed in a trench is only allowed in: Annexes 1. single- or double-walled metal containers which have been manufactured according to the provisions of appendix 5.17.2 2. containers of reinforced thermoset synthetics which have been manufactured according to the provisions of appendix 5.17.2 3. containers of stainless steel manufactured according to a code of good practice which has been approved by an environmental expert accredited in the discipline containers for gases or hazardous substances, or by an authorised expert 4. a storage system which provides the same guarantees of the prevention of soil and/or groundwater pollution as the aforementioned containers; this storage system must be accepted by an environmental expert accredited in the discipline of containers for gases or hazardous substances; a certificate of this acceptance is drawn up and signed by the aforementioned environmental expert; this certificate is to be kept available for the perusal of the supervisory official; a copy of the certificate will be forwarded by the operator to the Environmental Licence Department. § 2. All containers must be provided with a permanent leak detection system. This obligation does not apply for containers of reinforced thermoset synthetics or stainless steel which are located outside a water abstraction area or a protected zone, and of which the individual water content capacity is less than 5000 l, or less than 10000 l if these containers are for the storage of P3 and/or P4 products. The leak detection system must meet the provisions of appendix 5.17.3. § 3. The trench must be built according to the provisions of appendix 5.17.6. The walls may not meet any property boundaries. § 4. At the lowest point of the trench the necessary provisions must be installed to be able to register and remove any leaked liquid or water. § 5. It is forbidden to give the trench any other purpose than that of storage space for the containers. Only the ducts required for the operation of the containers placed therein may be brought through the trench. § 6. If the container has a content greater than 2000 l, there is to be a free space around the container at least 50 cm wide to make possible the inspection of the container. § 7. Unless specified otherwise in the environmental licence, the filling in of the trench is compulsory for the storage of P1 and/or P2 products. If the trench is filled up, between the container and the wall of the trench there must be a distance of at least 30 cm, and account is to be taken of the provisions of appendix 5.17.6 to this order. § 8. Measures must be taken to prevent the passage of vehicles or the storage of goods above the trench, unless these are protected by a non-flammable and sufficiently resistant floor. § 9. A prefab construction, consisting of a concrete cylindrical container in which a singlewalled metal container is placed, is only allowed for the storage of P3 and/or P4 products intended for the heating of buildings with a water content capacity of max. 5300 l and if the metal container and the prefab concrete cylindrical container has been built as a prototype accepted by an environmental expert accredited in the discipline containers for gases or hazardous substances or by an authorised expert. Waste Water and Waste Gas Treatment 385

Art. 5.17.2.5<br />

§ 1. Storage in containers placed in a trench is only allowed in:<br />

Annexes<br />

1. single- or double-walled metal containers which have been manufactured according to the<br />

provisions of appendix 5.17.2<br />

2. containers of reinforced thermoset synthetics which have been manufactured according to the<br />

provisions of appendix 5.17.2<br />

3. containers of stainless steel manufactured according to a code of good practice which has<br />

been approved by an environmental expert accredited in the discipline containers for gases<br />

or hazardous substances, or by an authorised expert<br />

4. a storage system which provides the same guarantees of the prevention of soil and/or gro<strong>und</strong>water<br />

pollution as the aforementioned containers; this storage system must be accepted by<br />

an environmental expert accredited in the discipline of containers for gases or hazardous<br />

substances; a certificate of this acceptance is drawn up and signed by the aforementioned<br />

environmental expert; this certificate is to be kept available for the perusal of the supervisory<br />

official; a copy of the certificate will be forwarded by the operator to the Environmental<br />

Licence Department.<br />

§ 2. All containers must be provided with a permanent leak detection system. This obligation<br />

does not apply for containers of reinforced thermoset synthetics or stainless steel which are located<br />

outside a water abstraction area or a protected zone, and of which the individual water<br />

content capacity is less than 5000 l, or less than 10000 l if these containers are for the storage<br />

of P3 and/or P4 products.<br />

The leak detection system must meet the provisions of appendix 5.17.3.<br />

§ 3. The trench must be built according to the provisions of appendix 5.17.6. The walls may not<br />

meet any property bo<strong>und</strong>aries.<br />

§ 4. At the lowest point of the trench the necessary provisions must be installed to be able to<br />

register and remove any leaked liquid or water.<br />

§ 5. It is forbidden to give the trench any other purpose than that of storage space for the containers.<br />

Only the ducts required for the operation of the containers placed therein may be<br />

brought through the trench.<br />

§ 6. If the container has a content greater than 2000 l, there is to be a free space aro<strong>und</strong> the container<br />

at least 50 cm wide to make possible the inspection of the container.<br />

§ 7. Unless specified otherwise in the environmental licence, the filling in of the trench is compulsory<br />

for the storage of P1 and/or P2 products.<br />

If the trench is filled up, between the container and the wall of the trench there must be a distance<br />

of at least 30 cm, and account is to be taken of the provisions of appendix 5.17.6 to this<br />

order.<br />

§ 8. Measures must be taken to prevent the passage of vehicles or the storage of goods above<br />

the trench, unless these are protected by a non-flammable and sufficiently resistant floor.<br />

§ 9. A prefab construction, consisting of a concrete cylindrical container in which a singlewalled<br />

metal container is placed, is only allowed for the storage of P3 and/or P4 products intended<br />

for the heating of buildings with a water content capacity of max. 5300 l and if the metal<br />

container and the prefab concrete cylindrical container has been built as a prototype accepted<br />

by an environmental expert accredited in the discipline containers for gases or hazardous substances<br />

or by an authorised expert.<br />

Waste Water and Waste Gas Treatment 385

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