91/271/EEC - Urban waste-water treatment

This European Standard sets out the objectives for drain and sewer systems outside buildings. It specifies the functional requirements for achieving these objectives and the principles for strategic and policy activities relating to planning, design, installation, operation, maintenance and rehabilitation.
It is applicable to drain and sewer systems, which operate essentially under gravity, from the point where wastewater leaves a building, roof drainage system, or paved area, to the point where it is discharged into a wastewater treatment plant or receiving water body.
Drains and sewers below buildings are included provided that they do not form part of the drainage system for the building.

This European Standard specifies the objectives for drain and sewer systems outside buildings. It specifies the functional requirements for achieving these objectives and the principles for strategic and policy activities relating to planning, design, installation, operation, maintenance and rehabilitation.
It is applicable to drain and sewer systems from the point where wastewater leaves a building, roof drainage system, or paved area, to the point where it is discharged into a wastewater treatment plant or receiving water body.
Drains and sewers below buildings are included provided that they do not form part of the drainage system for the building.

EN 16479 defines general requirements, performance requirements and conformity test procedures for automated sampling devices (samplers) for water and waste water that: - sample water and waste water from non-pressurized (i. e. open to atmosphere) channels or vessels; - sample over extended periods to collect discrete or composite samples based on time, event or flow proportional sampling. Specific sample integrity requirements are defined for samplers to be used for the collection of samples of final effluent or influent for the purpose of monitoring the performance of waste water treatment works, as required under the Urban Waste Water Treatment Directive (UWWTD). Samplers to be used for other industrial applications do not have to be assessed against these specific sample integrity requirements. This European Standard does not cover the installation and on-going use of samplers.

This European Standard defines general requirements, performance requirements and conformity test procedures for automated sampling devices (samplers) for water and waste water that:
-   sample water and waste water from non-pressurized (i. e. open to atmosphere) channels or vessels;
-   sample over extended periods to collect discrete or composite samples based on time, event or flow proportional sampling.
Specific sample integrity requirements are defined for samplers to be used for the collection of samples of final effluent or influent for the purpose of monitoring the performance of waste water treatment works, as required under the Urban Waste Water Treatment Directive (UWWTD). Samplers to be used for other industrial applications do not have to be assessed against these specific sample integrity requirements.
This European Standard does not cover the installation and on-going use of samplers.

This guidance standard specifies equipment and procedures for collecting floating pupal exuviae of Chironomidae from aquatic habitats; rivers from source to estuary, canals, ponds, lakes and sea coasts. Guidance in preparing specimens for subsequent identification is provided. These samples provide representative data on relative species abundance, suitable for numerical analysis, classification and monitoring of environmental conditions.

This guidance standard specifies equipment and procedures for collecting floating pupal exuviae of Chironomidae from aquatic habitats; rivers from source to estuary, canals, ponds, lakes and sea coasts. Guidance in preparing specimens for subsequent identification is provided. These samples provide representative data on relative species abundance, suitable for numerical analysis, classification and monitoring of environmental conditions.

This CEN Technical Report gives one of a series on sludge management options and describes good practice for the disposal of sludges and sludge treatment residues to landfill where national regulations permit.
This document is applicable to sludges described in the scope of CEN/TC 308 i.e. specifically derived from :
-   storm water handling ;
-   night soil ;
-   urban wastewater collecting systems ;
-   urban wastewater treatment plants ;
-   treating industrial wastewater similar to urban wastewater (as defined in Directive 91/271/EEC ) ;
-   water supply treatment plants;
-   water distribution systems;
but excluding hazardous sludges from industry.

This CEN Technical Report gives one of a series on sludge management options and describes good practice for the disposal of sludges and sludge treatment residues to landfill where national regulations permit.
This document is applicable to sludges described in the scope of CEN/TC 308 i.e. specifically derived from :
-   storm water handling ;
-   night soil ;
-   urban wastewater collecting systems ;
-   urban wastewater treatment plants ;
-   treating industrial wastewater similar to urban wastewater (as defined in Directive 91/271/EEC ) ;
-   water supply treatment plants;
-   water distribution systems;
but excluding hazardous sludges from industry.