Feasibility of treatment of low polluted waste water in municipal waste water treatment plants

1997 ◽  
Vol 35 (10) ◽  
pp. 73-78 ◽  
Author(s):  
Harry L. Dorussen ◽  
Wilfried B. A. Wassenberg
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Simulation Models ◽  
Water Treatment Plant ◽  
Municipal Waste ◽  
Waste Water Treatment Plant ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants

In many cases municipal waste water treatment plants receive considerable amounts of low polluted waste water like pretreated industrial waste water, polluted ground water etc. It is not known to what extent treatment of this type of waste water in a municipal waste water treatment plant is feasible with regard to environmental effects and costs. In this paper the effects of this type of waste water on the removal efficiencies of nitrogen, heavy metals and organic micropollutants have been described and costs have been given to prevent an increase of emission loads. For an estimation of the effects on the emission loads simulation models have been used. For an existing oxidation system with a relatively high amount of low polluted waste water simulation runs have been made for situations with and without low polluted waste water. On basis of the results of this case study a system has been developed for the assessment of the feasibility of treatment of low polluted waste water in a municipal waste water treatment plant.

Calibrating simple models for mixing and flow propagation in waste water treatment plants

1999 ◽  
Vol 39 (4) ◽  
pp. 61-69 ◽  
Author(s):  
Bob De Clercq ◽  
Filip Coen ◽  
Bart Vanderhaegen ◽  
Peter A. Vanrolleghem
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Conventional Activated Sludge ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants ◽  
Flow Propagation

Mathematical models are useful tools in the prediction of system responses to operational changes in waste water treatment plants (WWTPs). The tanks-in-series model is one of the widespread hydraulic models in waste water treatment. This study shows the applicability of the mentioned model. Next to the mixing of substrate in a conventional activated sludge system, an oxidation ditch and a trickling filter, also the flow propagation in a waste water treatment plant was modelled. These different full-scale examples taken from waste water treatment demonstrate the relative ease of model configuration and calibration. Difficulties like experimental design, modelling the diffusion in biofilms and transients in flow rate were encountered.

Upgrading of waste-water treatment plants for the biological nitrogen elimination by the injection of on-line prepared mixed cultures

1994 ◽  
Vol 29 (12) ◽  
pp. 129-138 ◽  
Author(s):  
Margarete Glancer ◽  
Siniša Ban ◽  
Vice Soljan ◽  
Imre Pascik
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Mixed Culture ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Mixed Cultures ◽  
Waste Water Treatment Plant ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants ◽  
On Line

By mixing of defined single bacterial and yeast strains with known biokinetic and growth properties, it is possible to prepare various efficient designed mixed cultures for the biodegradation of defined persistent substances and their derivatives. Preparing the mixed cultures on line in separate propagators and enriching the activated sludges semi-continuously by injection of the mixed culture into the activated sludge reactor it is possible to improve the biodegradation efficiency of waste water treatment plants. Applying this technology in a cokery effluents treating plant designed for the removal of COD and phenols, additionally to an improved COD-removal it succeeded in establishing a very efficient nitrification. Injecting a mixed culture, containing oxygen tolerant denitrifying strains into the municipal waste water treatment plant of Salzburg it was possible to establish a simultaneous nitrification and denitrification under aerobic conditions

APPLIED OFF-LINE EXPERT SYSTEM FOR EFFLUENT, OPERATIONAL AND TECHNICAL PROBLEMS OF WASTE WATER TREATMENT PLANTS

1994 ◽  
Vol 30 (2) ◽  
pp. 157-164 ◽  
Author(s):  
Gösta Ladiges ◽  
Rolf Kayser
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Knowledge Bases ◽  
Waste Water Treatment Plant ◽  
Technical Problems ◽  
Water Treatment Plants ◽  
Effluent Waste

An off-line expel1 system has been developed and implemented at a nutrient removing waste water treatment plant to provide the operators with knowledge required to run their plant. The system can be started at occurring problems, and for the choice of setpoints for the operation of the plant. It contains knowledge bases for various effluent waste water and technical problems, combining facts and relationships for different chemical, biological and technical processes with models and algorithms. This enables the system to assess situations and give proper advice as well based on facts, experience and calculations. The system is built on a personal computer, and works with a Windows user interface that has been developed in intense co-operation with the plant operators.

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