Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/2651
Título: | Knowledge-based fuzzy system for diagnosis and control of an integrated biological wastewater treatment process |
Autor(es): | Pires, O. C. Palma, C. Costa, J. C. Moita, I. Alves, M. M. Ferreira, Eugénio C. |
Palavras-chave: | Anaerobic digestion Activated sludge Fuzzy logic based system Nutrient removal Distributed supervision Expert system |
Data: | 2005 |
Citação: | IWA CONFERENCE ON INSTRUMENTATION, CONTROL AND AUTOMATION, 2, Busan, 2005 – “Proceedings of the the 2nd IWA Conference on Instrumentation, Control and Automation”. [S.l. :s.n.], [c. 2005]. vol. 1. p. 247-255. |
Resumo(s): | A supervisory expert system based on fuzzy logic rules was developed for diagnosis and control of a lab- scale plant comprising anaerobic/anoxic/aerobic modules for combined high rate biological N and C removal. The design and implementation of a computational environment in LabVIEW for data acquisition, plant operation and distributed equipment control is described. A step increase in ammonia concentration from 20 to 60 mg N/L was applied during a trial period of 73 hours. Recycle flow rate from the aerobic to the anoxic module and by-pass flow rate from the influent directly to the anoxic reactor were the output of the fuzzy system that were automatically changed (from 34 to 111 L/day and from 8 to 13 L/day, respectively), when new plant conditions were recognized by the expert system. Denitrification efficiency higher than 85% was achieved 30 hours after the disturbance and 15 hours after the system response at an HRT as low as 1.5 hours. Nitrification efficiency gradually increased from 12 to 50% at an HRT of 3 hours. The system proved to properly react in order to set adequate operating conditions that timely led to recover efficient N and C removal rates. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/2651 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Artigos em Livros de Atas / Papers in Proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
ICA2005-Korea-Proceedings[1].pdf | 124,35 kB | Adobe PDF | Ver/Abrir |