scholarly journals Investigation of Different Control Strategies for the Waste Water Treatement Plant

10.5772/18573 ◽  
2011 ◽  
Author(s):  
Vega ◽  
Hicham El
Keyword(s):  
Waste Water ◽  
Control Strategies

Application of Models in Developing Control Strategies for Activated Sludge Waste Water Treatment Plants

1984 ◽  
Vol 16 (5-7) ◽  
pp. 587-594 ◽  
Author(s):  
A Holmberg ◽  
J Forsström
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Activated Sludge ◽  
Control Strategies ◽  
Waste Water Treatment ◽  
Control Algorithms ◽  
Flow Rates ◽  
Simulation Techniques ◽  
Water Treatment Plants ◽  
Sludge Waste

This paper studies control of activated sludge plants using recycle and wastage flow rates as control variables. The behaviour of the control algorithms was studied using simulation techniques. The results indicate that the process is not sensitive to the recycle flow rate. Wastage flow control with the objective to keep the sludge concentration constant turned out to be promising.

Online load measurement in combined sewer systems – possibilities of an integrated management of waste water transportation and treatment

2002 ◽  
Vol 45 (4-5) ◽  
pp. 421-428 ◽  
Author(s):  
M. Häck ◽  
U. Lorenz
Keyword(s):  
Waste Water ◽  
Municipal Wastewater ◽  
Control Strategies ◽  
Integrated Management ◽  
Organic Load ◽  
Sewer System ◽  
Water Transportation ◽  
Sewer Systems ◽  
Hydraulic Conditions ◽  
Pre Treatment

To obtain a further appreciable reduction of discharges in the area of sewage disposal, besides waste water purification at our treatment plants, discharge of wastewater through the sewer system has to be taken into account. Today, control strategies pursuing this aim are mainly based on hydraulic conditions like level or flow rate. They all neglect the wastewater organic load as an essential parameter. The main reasons are the expensive methods used to continuously measure traditional organic sum parameters like COD or TOC. A meaningful alternative to those parameters is the spectral absorption coefficient at λ = 254 nm (SAC), defined in DIN 38402 by the German Institute for Standardisation. As a purely physical parameter, the SAC shows a good correlation to organic sum parameters like COD and TOC, especially if municipal wastewater is considered. By using an UV-process probe, it is possible to measure the SAC and infer the organic load of raw wastewater continuously without any sample pre-treatment. By the use of this instrument numerous possibilities arise, in order to control the sewers discharge load depend.

Adolescents' Use of Resource Control Strategies and Bullying Behaviors

2017 ◽  
Author(s):  
Kelly N. Clark ◽  
Nicole B. Dorio ◽  
Michelle K. Demaray ◽  
Christine K. Malecki
Keyword(s):  
Control Strategies ◽  
Resource Control ◽  
Bullying Behaviors
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