Pilot Plant Research on Biological Phosphate and Nitrogen Removal at Seven Waste Water Treatment Plants

1993 ◽  
Vol 27 (5-6) ◽  
pp. 329-341 ◽  
Author(s):  
Eef J. Leeuw ◽  
Peter de Jong
Keyword(s):  
Pilot Plant ◽  
Waste Water Treatment ◽  
Phosphate Removal ◽  
Storm Water ◽  
Effluent Quality ◽  
Water Flows ◽  
Peak Loads ◽  
Water Treatment Plants ◽  
Biological Nitrogen ◽  
Nitrogen And Phosphate Removal

By means of a mobile pilot plant, several technologies for enhanced biological nitrogen and phosphate removal (10 mg N-total/l and 1 mg P/l) have been tested at seven locations. The main results with respect to effluent quality, sludge characteristics, effects of peak loads and storm water flows are presented.

Upgrading of the Munich waste water treatment plants for denitrification in effluent filters

1994 ◽  
Vol 29 (12) ◽  
pp. 217-225 ◽  
Author(s):  
J. Eichinger
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Pilot Plant ◽  
Waste Water Treatment ◽  
Storm Water ◽  
Pilot Studies ◽  
Water Treatment Plants ◽  
The Usa ◽  
High Degree ◽  
P Removal

Munich has been studying denitrification in effluent filters, as has been practiced in the USA for over 15 years in a full scale demonstration, pilot- plant for over a year (October 1991 through October 1992). The results have been very encouraging; in spite of very low wastewater temperatures, a high degree of denitrification has been achieved very economically. Excellent BOD5 and COD effluents have been achieved. At the same time P-removal has improved. Nitrite has always been low. This was done at dry weather hydraulic loads averaging 4.4 m/hr with a daily peak of 6 m/hr and storm water maximums of 14.4 m/hr. Additional smaller scale, pilot studies were begun in May 1993, whose object is to optimize the technology under European conditions.

Biofilm Reactors: A Compact Solution for the Upgrading of Waste Water Treatment Plants

1992 ◽  
Vol 26 (3-4) ◽  
pp. 733-742 ◽  
Author(s):  
P. Sagberg ◽  
P. Dauthuille ◽  
M. Hamon
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Phosphate Removal ◽  
Biofilm Reactors ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants ◽  
Fixed Film ◽  
Two Stages ◽  
New Applications

In order to obtain compact plants and to assure a greater treatment reliability, fixed film reactors have been developed. This biofiltration has been applied and proved for over a decade for carbon removal. Today, new applications appear in nitrogen and phosphate removals, which are able to respond to the upgrading of aging waste water treatment plants. Full scale plant results are presented in nitrification. The use of two stages of biofilm reactors (C + N) permits high effluent quality. Chemical phosphate removal and denitrification results obtained on pilot tests are also discussed. Some plants are now been built with such processes. The VEAS concept, in Oslo, which includes four steps of fixed film reactors is discussed as an example of this present upgrading tendency.

Pilot Plant Studies on Tannery Waste Water Treatment with the Objective to Reduce Sludge Production

1991 ◽  
Vol 23 (10-12) ◽  
pp. 1863-1871 ◽  
Author(s):  
L. Szpyrkowicz ◽  
S. Rigoni-Stern ◽  
F. Zilio Grandi
Keyword(s):  
Pilot Plant ◽  
Waste Water Treatment ◽  
Waste Waters ◽  
Traditional Treatment ◽  
Effluent Quality ◽  
Tannery Waste ◽  
N Removal ◽  
The Mean ◽  
Tannery Waste Water ◽  
Final Effluent

The objective of the work was to verify the possibility to reduce the quantity of the sludge produced during the treatment of chrome tannery waste waters. The modified Ludzack-Ettinger process for high nitrogen content waste waters was tested without a chemical-physical pretreatment, normally adopted to eliminate from the tannery waste waters the compounds potentially inhibitory for biological processes. The results obtained in a pilot plant during 4 runs differing in waste waters flow and strength and in MLSS recycling ratio demonstrate the lack of inhibition of denitrification and nitrification by a high content of sulphides and chromium. In the comparison with traditional treatment of tannery waste waters the 60% reduction of the sludge to be wasted and the improvement of a final effluent quality were achieved. The mean overall rate of COD and N removal was 0.38 mgCOD/mgMLVSSxday and 0.125 mgN/mgMLVSSxday, respectively.

Second Generation Oxidation Ditches: Advanced Technology in Simple Design

1993 ◽  
Vol 27 (9) ◽  
pp. 105-113
Author(s):  
G. Petersen ◽  
H. Nour El-Din ◽  
E. Bundgaard
Keyword(s):  
Phosphorus Removal ◽  
Waste Water Treatment ◽  
Advanced Technology ◽  
Simple Design ◽  
Biological Phosphorus Removal ◽  
Nitrogen And Phosphorus ◽  
Effluent Quality ◽  
The Right ◽  
Biological Nitrogen ◽  
Biological Phosphorus

Oxidation ditcb systems for waste water treatment at various demands for effluent quality with regard to BOD, nitrogen and phosphorus are presented. Simple design for only BOD-removal and nitrification as well as designs for advanced treatment including biological nitrogen and biological phosphorus removal are presented, and full scale results from more than 15 years of operation are shown. The simple design and price competitive construction can none the less produce effluent qualities below 15 mg BOD/l, 8 mg N/l and 1.5 mg P/l if the right oxidation ditcb combination is used.

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