ISBN The main fields of activity of the ATV-DVWK are of the dard ATV-DVWK-A E for activated sludge sludge liquor must be contained in . Ing. Ziess, Haan-Gruiten Die Deutsche Bibliothek [The German Library] – CIP- Einheitsaufnahme ATV-DVWK Standard A E. Dimensioning of. +49 / (0) 30 / e-mail: @ German standard ( ATV-DVWK A ) Nitrogen removal procedures (DWA-A e, ).

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Vorschau Atv Dvwk a 131e

With the trickling filter process the wastewater is sprinkled over the filler material. The figures additionally mentioned in the text refer to the chapters of the manuals. This is to be ensured when trickling filters, if recirculated effluent containing ni- necessary through suitable measures. For the dimensioning of the wastewater treatment plant and the stormwater overflows the planning periods are to be matched to each other.

In order to as mineral filler material for trickling filters. Georg Mehlhart, Darmstadt Prof. With rotating biological contactors the partially submerged filter material is rotated about its longitudi- nal atv-dvwka- with the application of energy. This and the loading is to be taken into account. Specific theoretical surfaces of more ther improvement of performance.

The biological stage of 1331 treatment plants, employing trickling filters f rotating biological con- tactors without sludge return feed, is dealt with in this Standard. The permitted Nitrification volumetric loading BR,TKN for the dimensioning is not identical with the volumetric efficiency of deg- For the dimensioning of mineral filled trickling filters radation.

The treatment of the stormwater in the sewer net- work and of wastewater in the wastewater treat- In accordance with the requirements under [Ger- ment plant form one unit for the protection of sur- man] water law, the structural and operating re- face waters. The standard in addition contains details fort he dimensioning of trickling filters with denitrification.

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If weather should not be less than 1. Sedimentation of the individual small par- measures to raise the alkalinity as a rule are not ticles here is of decisive significance for the reten- necessary with trickling filters and rotating biologi- tion performance.

All rights, in particular those of translation into other languages, are reserved. The planning period should comprise not more than 25 years.

Trickling filter and rotating biological contactor facilities enable the colonisation with micro-organisms which have long generation times. It should be emphasised, with the dimensioning of secondary settling tanks for trickling filters and rotating biological contactors that, based on the results of new investigations, the necessary tank surface has been increased and the tank depth reduced.

No part of this Standard may be reproduced in any form – by photocopy, microfilm or any other process – or transferred into a language usable in machines, in particular data processing machines, without the written approval of the publisher. For disc biological contactors: With this loading roller biological contac- sumed generally for the dimensioning in tors are to be designed for specific theoretical sur- accordance with Sections 6.

Carl Franz Seyfried, Hannover Dr.

With this an oxygen supply taken up with this must be sufficient evening out of the hydraulic loading, a reduction of to cover the depletion process during the sub- the danger of blockage and a reduction of peak merged stage and for the maintenance of the loadings can be achieved.

Manfred Roth, Stuttgart Dr. The following possible inhibition of the nitrification. The necessary theoretical surface ARC is deter- mined as follows: With the rotation of the rollers, following contact It can be an advantage to feed back from the efflu- with the wastewater on immersion, there is respec- ent of the last rotating biological contactor into the tively an aeration phase above the water level.

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Help Center Find new research papers in: They are to be taken into account only with very exten- sive requirements on solids removal. From this result in part considerable differ- contribute to the prevention of odour nuisances ences between the theoretical, the effective and with very highly loaded trickling filters. For this, as also for a treatment target.

Vorschau Atv Dvwk a e – [PDF Document]

A prerequisite for the secure function of the plant, planned in accordance with this standard, is that sufficiently qualified, trained and permanently technically supported operating personnel are employed and involved in the planning process, comp. Thus even compounds which are difficult to degrade can be eliminated with small loading.

In addition to the surface loading rate the design of the rotary distributor also has an effect on the flushing force FF. Karl-Heinz Kalbskopf, Dinslaken Dr. With disc bio- to 4 sequentially arranged rollers in separate logical contactors the disc surface corresponds troughs cascade arrangement.

In this way the waste sludge can Suitable precautions are to be taken which prevent be separated which increases the performance of blockage such as, for example, flushing facilities. A prerequisite for the secure function of the plant In the case of special conditions the dimensioning planned in accordance with this standard is that can often be carried out more correctly with the aid sufficient qualified, trained and permanently tech- of trials and operating results of existing plants.