Vattenkvalitet

Ämnesområden: Avloppsvatten
Kommittébeteckning: SIS/TK 198 (Vatten- och avloppssystem)
Källa: CEN
Svarsdatum: den 19 okt 2021
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This document specifies the design requirements for plant and equipment to remove solids, other than screenings and grit, from raw wastewater, at wastewater treatment plants for over 50 PT.
It includes primary treatment with sedimentation, fine screens and micro-screens
NOTE 1 The removal of screenings and grit, are covered in EN 12255, Part 3.
NOTE 2 Dissolved air flotation (DAF) is not covered in detail in this document because it is not commonly used for primary treatment in municipal wastewater treatment plants. It may be used for primary treatment of industrial wastewater, but then the design is specific to the application.

Ämnesområden: Avloppsvatten
Kommittébeteckning: SIS/TK 198 (Vatten- och avloppssystem)
Källa: CEN
Svarsdatum: den 19 okt 2021
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This document specifies design principles and performance requirements for odour control and associated ventilation for wastewater treatment plants serving more than 50PT.

Ämnesområden: Vattenkvalitet: allmänt
Kommittébeteckning: SIS/TK 198 (Vatten- och avloppssystem)
Källa: ISO
Svarsdatum: den 22 okt 2021
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This document provides guidelines for the treatment and reuse of MSW Leachate accumulated before incineration.
It is applicable to personnel involved in design, management, operation and supervision of treatment and reuse of the MSW Leachate accumulated before incineration and environmental authorities engaged in regulation.
This document provides:
— General principles;
— Quantity and quality of the leachate;
— Treatment system design for the leachate;
— Reuse of treated leachate;
— Environmental and occupational health and safety

Kommittébeteckning: SIS/TK 198 (Vatten- och avloppssystem)
Källa: CEN
Svarsdatum: den 16 nov 2021
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This document specifies a method to determine the influence of factory-made cement based products on the odour, flavour, colour, turbidity and total organic carbon (TOC) of test waters after contact with the products.
This document is applicable to factory-made cement based products, e.g. cement mortar linings to metallic pipes, tanks, concrete pipes, etc. intended to be used for the transport and storage of water for human consumption, including raw water used for the production of drinking water.
NOTE Tests with the specified test water will not necessarily be representative of materials used in different kinds of waters and especially very soft waters.

Kommittébeteckning: SIS/TK 198 (Vatten- och avloppssystem)
Källa: CEN
Svarsdatum: den 16 nov 2021
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This document specifies a method to determine the migration of substances from factory-made cement based products into test waters after contact with the products.
This document is applicable to factory-made cement based, e.g. cement mortar linings to metallic pipes, tanks, concrete pipes, etc., intended to be used for the transport and storage of water intended for human consumption, including raw water used for the production of drinking water.
NOTE Tests with the specified test water will not necessarily be representative of materials used in different kinds of waters and especially very soft waters.

Kommittébeteckning: SIS/TK 198 (Vatten- och avloppssystem)
Källa: ISO
Svarsdatum: den 19 nov 2021
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This International Standard provides guidance for the operation and maintenance (O&M) of basic on-site domestic wastewater services (ODWS), using appropriate technologies in their entirety at any level of development. This International Standard supplements and is intended to be used in conjunction with ISO 24513 and ISO 24521.
It provides assistance to relevant authorities, training organizations, certification bodies, and other responsible entities for the development of regulations, plans, manuals as well as information and training materials addressed to operators and users of ODWS.
This International Standard is applicable to both publicly and privately operated on-site domestic wastewater (blackwater and greywater) systems, for one or more dwellings or other premises where wastewater is generated.
The scope of this International Standard includes the following:
• guidance on the O&M of on-site domestic wastewater systems from the operator’s perspective
• guidance on the O&M of on-site domestic wastewater systems from the user’s perspective
• guidance on training and information aspects
• guidance on environmental, health and safety issues
The following are outside the scope of this International Standard:
• detailed design of on-site domestic wastewater systems
• limits of acceptability for discharge of wastewater or sludge
• analytical methods
• management structure of wastewater services’ activities for O&M
• content of contracts or subcontracts
Note 1: Management of on-site domestic wastewater systems, especially in rural areas and areas under development, is sometimes provided by the owners of the premises where wastewater is generated. In
such cases, the owners of the premises carry out the management themselves. In this International Standard, the term “services” includes “self-services” provided by the owners or users of the premises.
Note 2: Especially in undeveloped areas, sanitary wastewater is collected in an undiluted form. Sources of sanitary wastewater in this International Standard are domestic, excluding stormwater runoff.

Note 3: The designation of activities as operation activities or maintenance activities can differ according to the local context. However, it is important that activities essential for the proper functioning of ODWS are carried out, no matter how these activities are designated.