„Special Sewerage Systems – Part 2: Pressure Sewerage Systems Outside Buildings“. ATV-DVWK-A E. Dimensioning of Stormwater Holding Facilities. Procedures — Supplement to Standard ATV-A E. ATV-A E . DWA-A E. Dimensioning of ATV-DVWK-M E New. Allocation of. Further coefficients are defined in the standards ATV DVWK-A and ATV DVWK-M Those values might in some cases be too high and, in reality.

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German Standards 1 Download Report. Published on Nov View Download Politically and economically independent, we are working in the fields of water management, sewage, waste and soil conservation. The number of its members makes the DWA one of the largest organizations in this field in Europe, and its special expertise and competence give it a prominent place in standardization, professional training and public information. Our main activities are preparing and updating the DWA Rules and Standards and engaging in national and international cooperation to draft special standards.

This work does not only refer to technical and scientific issues, but also to the economic and legal aspects of environmental and water protection. Our intention is to provide for the public of English speaking specialists a picture of how, in Germany, technical standards on technicalscientific subjects are elaborated and combined into a common set of rules and standards.

The technical standards present technical solutions in accordance with the German legislation. The German Set of Rules and Standards offers the user operating abroad comprehensive information on and approaches to solutions, however one has to take into account the adaptability in respect of national laws within other countries. Compared with other drainage processes the investments can be considerably lower.

In cost-comparison calculations all follow-on2costs for depreciation, rate of interest, operation and preventative maintenance are to be incorporated.

The Standard, along with the usual references to standards and definitions, contains the detailed system description of a pressure sewerage system. Questions about bylaws are covered as well as the planning of engineering implementation and the operation of pressure sewerage systems.

Part 2 of the Standard supplements EN and applies only together with this standard specification. It is in particular directed at planners, system suppliers, authorities, operators and construction companies.

It also contains additional performance characteristics which are important for those inviting tenders, planners, those carrying out construction and operators of vacuum dvqk systems. Standard DWA-A E supplements the standard specification in order to cover the necessary national [German] requirements. It helps the planning engineer to recognize and use creatively the margins existing dfwk EN Through the cvwk application of EN and DWA-A E a qualitatively high quality planning and implementation of the construction is achieved.

In the special issue both documents dvwi contained completely in one synoptic directive. It assists the planning engineer in recognising and using creatively the margins existing in EN In the joint publication both sets of technical rules are printed completely in one synoptic directive, i.


Through the joint application of EN and DWAA E wtv qualitatively high level of planning and execution of construction work is achieved. New English version in preparation: In addition they contain rules for action in operation and avoidance of accidents and hazards to health.

The respective minimum contents for service and operating instructions are listed in the individual parts of this series of standards. For exemplification they are supplemented by model texts. Due to the in part very different local constraints, the operator has to clarify which parts can be taken over or, if required, modified.

Depending aatv the scope and characteristics of the systems to be operated, in individual cases a combination of individual parts of the service and operating instructions can be sensible.

German Standards 1

With this revision the integration into quality and environmental management systems and the increase in significance of cost aspects have been taken into account. For the first time common standardised requirements, test criteria and testing recommendations are presented for these processes. Information on labour protection supplements the details. The strategies listed, area-related strategy, multi-sector, condition strategy, asset value strategy, function-related strategy and fire brigade strategy are assessed with regard to suitability and practice.

Statements are to be seen as a snapshot, which corresponds with the current status of the framework conditions and represent a majority opinion. It is therefore absolutely necessary to continue to match the considerations and conclusions presented with market development and the situation with regard to legislation. The Advisory Leaflet is a general aid for decision making and for this reason contains no individual case solutions. In addition, the oxygen requirement is subject to variations due to changes of loading, temperature, the concentration of activated sludge and other parameters.

The installations for the oxygen transfer must therefore be so designed that, on one hand, peak requirements can be covered, on the other, with low loading, not too much oxygen is fed to the system.

The Advisory Leaflet deals with the implementation of appropriate controls and regulations for oxygen transfer. Objective is to give the user an aid with the selection of a suitable control concept, oxygen transfer and information on the mechanical engineering equipment with the activated sludge process. Pipelines are to be found in all areas of the technical equipment of wastewater treatment plants. The choice of the pipe materials and the dimensioning of the pipelines with regard to diameter and wall thickness require a high degree of specialist knowledge, above all with regard to types of loading, the material characteristics, the possibilities for working and, not the least, the numerous standard specifications and regulations associated with these areas.

Using the Advisory Leaflet, planners, those requesting tenders and those responsible for decision making are to be given an aid for the achievement of technical and economical solutions. In many cases proven solutions can be recommended, in other cases attention must be drawn to technical documents and regulations, in order to develop correct standards for the requesting of tenders and the implementation in plant construction.


The Advisory leaflet presents a summary of the state of the art and allows both, the general introduction to this topic and also further consideration of the system. The aim is to ease access to sewage sludge drying processes for the planner and operator of sewage sludge treatment plants.

German Standards 1

Described are the basic procedural principles and the drying processes that have proven successful in practice. The feasibilities and dvvwk of individual drying systems are dealt with further so that an appropriate and well founded decision for or against the employment of drying plants will be supported and the possible selection of a drying system facilitated on a good ground.

Special focus was put on dredged material from water bodies of the the German Federal states and municipalities as exemplified with the dvak of sludge from ponds, lakes and storage reservoirs.

In respect of storage places for dredged material, gravel pits or pits of quarrying sites, flushing fields and depositories still cover a significant portion. Often, only the implementation of membrane technology provides the opportunity for economic water circulation or water reuse. The topics consist of several parts. Part 1 deals with membrane processes per se, i. Part 2 describes the membrane bioreactor processes.

Thereby, the emphasis is on the process unit, consisting of the biological degradation in the aeration tank and the separation of the biomass by means of membranes.

Details are given, in particular, on the requirements and specifics of membrane bioreactors in contrast to conventional activated sludge processes. Service Instructions for the Personnel of Wastewater Pumping InstallationsJune Dcwk we may deliver a number of selected rules and standards in the following languages, e. For further details please contact: Prices subject to change. Information for our customers abroadDear Madam, dear Sir, we would like to inform you about the procedure, how your order will be dealt with: As a customer from abroad you will receive a proforma-invoice for a payment in advance.

Payment with credit card guarantees the fastest possible delivery.

After receiving your payment the ordered publications will be sent to you immediately together with an invoice 171.

We hope to find your understanding why we have chosen this form of order procedure. Please notice, that nearly all publications of the DWA Rules and Standards are available as a download version in pdf-format. X complete overview of all download versions and further information can be found under www.

DIN test standards – test standards. German Standards of Iron Ores Documents. Jiri Davidek, Institute of West German standards for display workstations: The Bank for You1. Verben German 1 Ch. Comparison of American, British, and German standards for Safety Colours In German: German Association for Water, Wastewater and and Standards What do they find in DWA?