SEXTANG : système expert d'aide à l'exploitation des stations d'épuration par étangs aérés facultatifs

1993 ◽  
Vol 20 (3) ◽  
pp. 500-508
Author(s):  
J. Gagnon ◽  
J. B. Sérodes ◽  
G. Simian
Keyword(s):  
Wastewater Treatment ◽  
Expert System ◽  
Key Words ◽  
Municipal Wastewater ◽  
Environmental Regulations ◽  
Computer Assisted ◽  
System A ◽  
Système Expert ◽  
Data Record ◽  
User Friendly

When completed, the actual program of municipal wastewater abatment of Quebec will comprise, among many treatment stations, approximately 400 facultative aerated lagoons. This type of station needs some supervision to maintain a good performance. Failure to adequately supervise the process could result in partly treated waters, not meeting environmental regulations, being released, SEXTANG is a prototype of expert system developed to assist operators of these stations in their every day duties and to identify the causes of misfunctions and propose solutions. Four different functions are available: (i) diagnosis and solutions to identified problems, (ii) data record and processing of current parameters, (iii) sludge management, and (iv) information on environmental regulations, SEXTANG presents also a user friendly interface with functions like an explanation of questions asked by the system, a dictionary of wastewater treatment terminology, and the access, at any time during a consultation, to the values and answers given by the operator since the beginning of the consultation. Key words: expert system, wastewater treatment, facultative aerated lagoons, computer-assisted operation.

Pl@ntwood: A Computer-Assisted Identification Tool for 110 species of amazon trees based on wood Anatomical Features

IAWA Journal ◽  
2011 ◽  
Vol 32 (2) ◽  
pp. 221-232 ◽  
Author(s):  
Carolina Sarmiento ◽  
Pierre Détienne ◽  
Christine Heinz ◽  
Jean-François Molino ◽  
Pierre Grard ◽  
...  
Keyword(s):  
Tree Species ◽  
Tropical Species ◽  
Computer Assisted ◽  
Accurate Identification ◽  
Anatomical Features ◽  
System A ◽  
Microscopic Features ◽  
On Line ◽  
User Friendly ◽  
Identification Tool

Sustainable management and conservation of tropical trees and forests require accurate identification of tree species. Reliable, user-friendly identification tools based on macroscopic morphological features have already been developed for various tree floras. Wood anatomical features provide also a considerable amount of information that can be used for timber traceability, certification and trade control. Yet, this information is still poorly used, and only a handful of experts are able to use it for plant species identification. Here, we present an interactive, user-friendly tool based on vector graphics, illustrating 99 states of 27 wood characters from 110 Amazonian tree species belonging to 34 families. Pl@ntWood is a graphical identification tool based on the IDAO system, a multimedia approach to plant identification. Wood anatomical characters were selected from the IAWA list of microscopic features for hardwood identification, which will enable us to easily extend this work to a larger number of species. A stand-alone application has been developed and an on-line version will be delivered in the near future. Besides allowing non-specialists to identify plants in a user-friendly interface, this system can be used with different purposes such as teaching, conservation, management, and selftraining in the wood anatomy of tropical species.

Développement et usage d'un système expert pour le choix des évacuateurs de crues

1992 ◽  
Vol 19 (5) ◽  
pp. 847-854
Author(s):  
Benoît Robert ◽  
Mohamed Taleb ◽  
Claude Marche
Keyword(s):  
Expert System ◽  
System Structure ◽  
Management Tool ◽  
Computer Assisted ◽  
Existing Structures ◽  
Computer Assisted Design ◽  
Système Expert ◽  
Technical Content ◽  
Qualitative Knowledge ◽  
The Many

Expert systems are computer tools allowing the management of nonnumerical, qualitative knowledge. In that way, they depart from the numerical tools used for solving complex equation systems in computer assisted design. The integration of both types of tools is therefore desirable. Typically, the design of spillways involves long and tedious calculations, dependant on the type and nature of the structure. An expert system was developed to assist the design engineer in the initial and crucial task of choosing the baseline conditions. This expert system is based solely on technical criterion and integrates the knowledge of several experts in the field. A management tool for this multiple-source knowledge was therefore developed and integrated to the many design criterions. The system, currently being developed and implemented in an industry, was tested against approximately 40 worldwide existing structures. The responses, very promising, are presented with the system structure and its technical content. Key words: expert system, design, spillway, hydraulics.

STUDIES REGARDING THE PERFORMANCES OF MUNICIPAL WASTEWATER TREATMENT PROCESSES

2006 ◽  
Vol 5 (4) ◽  
pp. 685-692
Author(s):  
Elisabeta Chirila ◽  
Ionela Carazeanu Popovici ◽  
Techin Ibadula ◽  
Alice Iordache
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Municipal Wastewater Treatment ◽  
Treatment Processes

Membrane Bioreactors for Municipal Wastewater Treatment

2015 ◽  
Vol 4 (0) ◽  
pp. 9781780402925-9781780402925
Author(s):  
H. van der Roest ◽  
D. Lawrence ◽  
A. van Bentem
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Membrane Bioreactors ◽  
Municipal Wastewater Treatment

A study about the use of chemicals in conventional tertiary treatment. Performances comparison of three municipal wastewater treatment plants and pilot plant experiences

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
A. Iborra-Clar ◽  
J.A. Mendoza-Roca ◽  
A. Bes-Pií ◽  
J.J. Morenilla-Martínez ◽  
I. Bernácer-Bonora ◽  
...  
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Pilot Plant ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Secondary Effluent ◽  
Municipal Wastewater Treatment ◽  
Wastewater Reclamation ◽  
Valencian Region ◽  
Municipal Wastewater Treatment Plants

Rainfall diminution in the last years has entailed water scarcity in plenty of European regions, especially in Mediterranean areas. As a consequence, regional water authorities have enhanced wastewater reclamation and reuse. Thus, the implementation of tertiary treatments has become of paramount importance in the municipal wastewater treatment plants (WWTP) of Valencian Region (Spain). Conventional tertiary treatments consist of a physico-chemical treatment of the secondary effluent followed by sand filtration and UV radiation. However, the addition of coagulants and flocculants sometimes does not contribute significantly in the final water quality. In this work, results of 20-months operation of three WWTP in Valencian Region with different tertiary treatments (two without chemicals addition and another with chemicals addition) are discussed. Besides, experiments with a 2 m3/h pilot plant located in the WWTP Quart-Benager in Valencia were performed in order to evaluate with the same secondary effluent the effect of the chemicals addition on the final water quality. Results showed that the addition of chemicals did not improve the final water quality significantly. These results were observed both comparing the three full scale plants and in the pilot plant operation.

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