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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The atv-dvwk- period should com- erational safety. Technical regulations are drawn up for the selection of the most practical procedure for carbon, nitrogen and phosphorus removal, and for the dimensioning of the essential components and facilities of the plant.
The relevant concentra- 3. Recommended values for the following closure. Rolf Kayser, Braunschweig Dipl. Of these there are 10, specialists with personal membership; these are engi- neers, scientists, lawyers, business persons, operating personnel and technicians. If, as the recirculation should, in general, be taken from in Germany, the monitoring takes place as grab the effluent of the secondary settling tank.
However, an obligation for application can arise from legal or administrative regulations, a contract or other legal reason.
DWA Shop – Software Activated Sludge Expert
For this the following relationship 5. The structural aspects which effect the dimension- ing or which are assumed for the dimensioning are With trickling filters or rotating biological contactors dealt with within the scope of this standard.
Parameter Raw waste- Retention time in the primary Daily loads can only be calculated on the basis water settling stage with QDW 0. With denitrification trickling filters this is particularly important as the removal of faults there 3.
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. The biologically active surface is, as a rule, high loadings, so that it is advisable to limit the smaller than the theoretical surface of the sfiller BOD5 surface loading rate of the first stage with material.
In the various treatment zones there are liquor quantities and characteristics are to be taken respectively biocoenoses of different composition from . The politically and economically independent association works nationally and internationally in the fields of pollution control, wastewater, water-hazardous sub- stances, waste, hydraulic engineering, hydraulic power, hydrology, soil protection and contaminated sites.
With the employment of a [effluent requirement for inorganic nitrogen suitable filler material plastichowever, in principle SinorgN,MV ]. Andreas Stein, Emsdetten Prof. 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. With the trickling filter proc- ess the wastewater is spray irrigated over the filter material so that, during the dripping process, the contact between biomass and wastewater is established.
At least 40 load values are to be included for the de- termination of the values. Hilde Lemmer, Mnchen Prof. The biologically active to be ensured in the vertical direction. Some advice is given for trickling fil- ATF [ATK] m2 surface area of the trickling ters and rotating biological contactors in the sec- filter ond stage.
Deutsche Vereinigung fr Wasserwirtschaft, Abwasser und Abfall e. Through the performance of the trickling filter- feed pumps and an appropriate regulation e.
Vorschau Atv Dvwk a 131e
With pure carbon removal and nitrification of the organic nitrogen introduced into the sludge without denitrification the retention time with dry digester is released as ammonium nitrogen. The pheric oxygen, an uninterrupted exchange of air in discs can also be made up from segments fitted to the space above the rotation trickling filter is to be the shaft by a girder construction.
For this, according to precedents, there e- water in plants with large preliminary settling tanks, xists an actual presumption atv-dvwm-a it is textually and are unavoidable and more marked than with acti- technically correct and also generally recognised. COD than with domestic wastewater can arise. Helmut Resch, Weissenburg Chairman Dipl. 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.
If tating biological contactors have the task of sepa- necessary the optimum dosing point is to be de- rating the waste sludge, removed from the biologi- termined through trials. With this an oxygen supply taken up with this must be sufficient evening out of the hydraulic loading, a reduction of to cover the ayv-dvwk-a 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.
In practical dimensioning the following procedure has proved its worth: An as even free access to the biofilm and that waste sludge as possible complete wetting of the filter mate- can be removed with the wastewater. This applies above all for percentage to all loads from the wastewater.
On the other hand, with rotating biological contactors, the disks or rollers up to a half submerged in a wastewater trough, are rotated about their longitudinal axis using en- ergy. The partially treated effluent from upstream denitrifying trickling filters is fed via The following remarks apply both for mineral filled an intermediate settling tank or directly to a subse- trickling filters as well as trickling filters with plastic quent aerated nitrifying treatment unit.
Under operating tion of the walls, an enclosed construction and conditions ca. Home Documents Vorschau Atv Dvwk a e. Remember me on this computer. With its application no one avoids responsibility for his own action or for the correct application in spe- In this Standard technical regulations are drawn up cific cases; this applies in particular for the correct for the dimensioning both for handling of the margins described in the Standard.
Trickling filter and rotating biological contactor facilities enable the colonisation with micro-organisms which have long generation times.
As a rule, atv-dvwl-a or less anaerobic processes occur in sludge silos for aerobic stabilised sludge. With roller biological contactors used or the minimum separation of the discs. This Standard is an important, however, not the sole source of information for correct solutions.
All rights, in particular those of translation into other languages, are reserved. The biological stage of wastewater treatment plants, employing trickling filters and rotating biological con- tactors without sludge return feed, is dealt with in this Standard.
Thus even compounds which are difficult 311 degrade can be eliminated with small loading. With rotating biological contactors the partially submerged filter material is rotated about its longitudi- nal axis with the application of energy. For the dimensioning of the wastewater treatment plant and the stormwater overflows the planning periods are to be matched to each other.
The application of this Standard is open to everyone. Explanations on process technology are to be taken from the ATV Manuals Biological and advanced wastewater treatment  and Mechanical wastewater treatment . Carl Franz Seyfried, Hannover Dr.