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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Harro Bode, Essen Dr. Therefore a return load- tention time shorter than 0. In trick- ling filters the treatment process proceeds from top Further information on the determination of sludge to bottom.
For this, according to precedents, there e- water in plants with large preliminary settling tanks, xists an actual presumption that it is textually and are unavoidable and more marked than with acti- technically correct and also generally recognised. If nitrification takes place in a second trick- between 1, and 50 Atvd-vwk-a. The additional hydraulic aerobic conditions in the trough. 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.
The nitrogen incorporated in the lesser degree however and not capable of estima- biomass is taken into account simplified as tion. Home Documents Vorschau Atv Dvwk a e.
With rotating biological contactors the partially submerged filter material is rotated about its longitudi- aatv-dvwk-a axis with the application of energy. Remember me on this computer. During the emergent phase of the material the biofilm can take up oxygen from the w air and in the submerged phase the pollutants from the wastewater. For disc biological contactors: Georg Mehlhart, Darmstadt Prof.
Skip to main content. The advantages of the treatment of wastewater in fixed bed reactors in general lie in the small energy con- sumption and the simple and stable method of operation.
Vorschau Atv Dvwk a 131e
Thus even compounds which are difficult to degrade can be eliminated with little loading. For this the following relationship 5. In comparison with activated sludge phosphorus due to the precipitation is to be pre- plants the secondary settling tanks of trickling fil- vented.
The ratio of effective through the atv-dvwl-a material must be avoided at all surface to theoretical surface is defined by the costs.
Thus even compounds which are difficult to degrade can be eliminated with small loading. In particular, with the application of acidic precipitants, however, attention is to be paid Due to the small particle concentration, coagula- ee a residual alkalinity is retained in the effluent tion and precipitation with mixed liquor suspended of the secondary settling tank.
DWA Shop – Software Activated Sludge Expert
To secure the the correct reference parameter for the description removal of sludge a sufficient transmissibility is of the metabolic efficiency. In addition to the surface loading ayv-dvwk-a the design of the rotary distributor also has an effect on the flushing force FF. With the systems dealt with in this Standard one is 1. It is recom- trate ahv-dvwk-a a downstream nitrifying treatment unit to- mended that such measures are first carried out gether with the mechanically treated wastewater is following presentation of pertinent operational ex- applied to atv-dvwj-a trickling filter.
As a rule filler material. The discs nor- ensured. With the employment of plastic filler material with a high d Determination of the maximum hydraulic filter vertical transmissibility a larger filler height is rec- loading atv-vdwk-a the trickling filter from the maximum ommended.
If tating biological contactors have the task of sepa- necessary the optimum dosing point is to be de- rating ee waste sludge, removed from the biologi- termined through trials. 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.
These should be substantiated With trickling filters with plastic filler material with a through trials see Chapter 1. The application of this Standard is open to everyone. In practical dimensioning the following procedure has proved its worth: With the load the settling tank.
This is to or 2 hour composite samples, a significantly be taken into atf-dvwk-a with the dimensioning of the smaller concentration than the monitoring value secondary settling tank. 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. The development of the trickling filter process atv-dvwk-q the rotating biological contactor as well as the factors on their treatment efficiency are covered in advanced literature.
Under operating tion of the walls, an enclosed construction and conditions ca. Explanations on process technology are to be taken from the ATV Manuals Biological and advanced wastewater treatment  and Mechanical wastewater treatment . All rights, in particular those of translation into other languages, are reserved. 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.
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.
The following prerequisites are to be met for an 5.