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Titolo:
USING PH AS A REAL-TIME CONTROL PARAMETER FOR WASTE-WATER TREATMENT AND SLUDGE-DIGESTION PROCESSES
Autore:
ALGHUSAIN IA; HUANG J; HAO OJ; LIM BS;
Indirizzi:
KUWAIT UNIV,DEPT CIVIL ENGN,POB 5969 SAFAT 13060 KUWAIT UNIV MARYLAND,DEPT CIVIL ENGN COLLEGE PK MD 20742 TAEJON UNIV,DEPT ENVIRONM ENGN TAEJON 300716 SOUTH KOREA
Titolo Testata:
Water science and technology
fascicolo: 4, volume: 30, anno: 1994,
pagine: 159 - 168
SICI:
0273-1223(1994)30:4<159:UPAARC>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANOXIC-AEROBIC DIGESTION; ACTIVATED-SLUDGE; REDUCTION; ORP; AERATION; REMOVAL; SYSTEM;
Keywords:
ALTERNATING AEROBIC-ANOXIC OPERATION; AMMONIA VALLEY; ENDOGENOUS NITRATE RESPIRATION; NITRATE APEX; NITROGEN REMOVAL; ORP; PH; REAL-TIME COMPUTER CONTROL; SLUDGE DIGESTION; WASTE-WATER TREATMENT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
I.A. Alghusain et al., "USING PH AS A REAL-TIME CONTROL PARAMETER FOR WASTE-WATER TREATMENT AND SLUDGE-DIGESTION PROCESSES", Water science and technology, 30(4), 1994, pp. 159-168

Abstract

The alternating aerobic-anoxic (AAA) process offers many advantages for wastewater treatment and sludge digestion, Laboratory scale experiments were conducted to investigate the feasibility of using pH as a realtime control parameter for this process, Several well defined control points on the pH curve were identified, e.g., ammonia valley and nitrate apex, These points were directly related to the alternating nitrification and denitrification reactions in the process, and were found to be consistent with those previously identified using ORP. Although both pH and ORP can be used as real-time control parameters, pH provides several additional advantages over ORP. Based on these findings, real-time control strategies (fixed pH setpoints and dynamic pH control)were developed and tested. Results from laboratory scale AAA sludge digestion using fixed pH setpoints (6-8) indicated that 36% MLVSS reduction, 39% TN reduction and almost 48% saving in aeration energy was achieved after 300 hrs of digestion.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 03:05:15