ATV-DVWK-A 131 E PDF

Mezahn For this, as also for a treatment target. The hopper conical shape provides an even upwards flow distribution and encourages the formation and stability of a suspended sludge blanket. For control values of CP,ER 5. The dimensioning values presented below have been determined for disc biological contactors.

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For this, according to precedents, there exists an actual presumption that it is textually and technically correct and also generally recognised. The application of this Standard is open to everyone.

However, an obligation for application can arise from legal or administrative regulations, a contract or other legal reason. This Standard is an important, however, not the sole source of information for correct solutions. With its application no one avoids responsibility for his own action or for the correct application in specific cases; this applies in particular for the correct handling of the margins described in the Standard.

Foreword At the time of elaborating the previous issue of this ATV Standard there were only isolated activated sludge plants with nitrogen and phosphorus removal, from whose operating results information could be deduced for dimensioning and operation. Therefore, with many questions, one had to rely exclusively on the results of research.

In the meantime, a large number of such facilities have been commissioned so that a wider database, also from practice, is available for a revision. Compared with the issue of ATV Standard ATV-A dated February the following important changes have been made: validity for activated sludge plants of any size up to now 5, total number of inhabitants and population equivalents PT.

Explanations on process technology are to be taken from the ATV Manuals Biological and advanced wastewater treatment [1] and Mechanical wastewater treatment [2]. The figures additionally mentioned in the text refer to the chapters of the manuals.

May 5.

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vorschau_ATV-DVWK-A_131E.pdf

For this, according to precedents, there exists an actual presumption that it is textually and technically correct and also generally recognised. The application of this Standard is open to everyone. However, an obligation for application can arise from legal or administrative regulations, a contract or other legal reason. This Standard is an important, however, not the sole source of information for correct solutions. With its application no one avoids responsibility for his own action or for the correct application in specific cases; this applies in particular for the correct handling of the margins described in the Standard. Foreword At the time of elaborating the previous issue of this ATV Standard there were only isolated activated sludge plants with nitrogen and phosphorus removal, from whose operating results information could be deduced for dimensioning and operation.

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atv-dvwk_a_131_e

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