WATER QUALITY MONITORING/CONTROLLING APPARATUS AND SEWAGE TREATING SYSTEM

• Main Authors: OBARA TAKUMI, MOTOKI TADAO, TSUTSUMI MASAHIKO, YAMANAKA OSAMU, HATSUKA YUKIO
• Format: Patent
• Language: English
• Published: 08.07.2004
• Edition: 7
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TESTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide a water quality monitoring/controlling apparatus in which abnormality in the value measured by a water quality sensor can be diagnosed quickly, and to provide a sewage treating system equipped with the water quality monitoring/controlling apparatus. SOLUTION: This sewage treating system is provided with one or more bio-reactors for treating sewage and the water quality monitoring/controlling apparatus for monitoring whether or not the treated sewage satisfies the prescribed target water quality. The water quality monitoring/controlling apparatus is provided with the water quality sensor (an ammonia nitrogen concentration meter) 5 which is used for controlling the target water quality and by which the target water quality (ammonia nitrogen concentration) is measured, the water quality sensor (an oxidation-reduction potentiometer) 4 which is used for diagnosing the abnormality and by which the relative water quality (an oxidation-reduction potential (ORP)) is measured and an abnormality diagnosing part 50 for diagnosing whether the target water quality measured by the sensor 5 is abnormal or not by considering the correlation between the target water quality and the relative water quality. COPYRIGHT: (C)2004,JPO&NCIPI