BIOLOGICAL DENITRIFICATION APPARATUS
PURPOSE:To efficiently treat sewage, by providing an oxygen-containing gas supply means at the intermediate position in the up-and-down direction of a sludge bed and setting the lower part of said sludge bed to a denitrification part while setting the upper part thereof to an oxidizing part. CONSTIT...
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| creator | AKEGA HARUKI ASANO HIDEYUKI EMOTO FUDEKO |
| description | PURPOSE:To efficiently treat sewage, by providing an oxygen-containing gas supply means at the intermediate position in the up-and-down direction of a sludge bed and setting the lower part of said sludge bed to a denitrification part while setting the upper part thereof to an oxidizing part. CONSTITUTION:Raw sewage having an org. substance (methanol) injected therein through an org. substance injection line 5 is supplied to the lower part of a reaction tank 51 through a sewage inflow line 4. Air is introduced into the granular sludge bed 7 formed in the reaction tank 51 at the intermediate position thereof in the form of fine air bubbles from an air diffuser 53 through an air pipe 52 to supply oxygen to the granular sludge bed 7. The raw sewage denitrified herein by the action of denitrifying bacteria undergoes the oxidative decomposition treatment of the excessive org. substance. Further, the sewage reaches the gas-liquid-solid separation part 8 above the sludge bed to be separated into treated water, gas and sludge. By this method, the capacity of the tank can be miniaturized. |
| format | Patent |
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CONSTITUTION:Raw sewage having an org. substance (methanol) injected therein through an org. substance injection line 5 is supplied to the lower part of a reaction tank 51 through a sewage inflow line 4. Air is introduced into the granular sludge bed 7 formed in the reaction tank 51 at the intermediate position thereof in the form of fine air bubbles from an air diffuser 53 through an air pipe 52 to supply oxygen to the granular sludge bed 7. The raw sewage denitrified herein by the action of denitrifying bacteria undergoes the oxidative decomposition treatment of the excessive org. substance. Further, the sewage reaches the gas-liquid-solid separation part 8 above the sludge bed to be separated into treated water, gas and sludge. By this method, the capacity of the tank can be miniaturized.</description><language>eng</language><subject>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 ; METALLURGY ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE ; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><creationdate>1988</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19881026&DB=EPODOC&CC=JP&NR=S63258695A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19881026&DB=EPODOC&CC=JP&NR=S63258695A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>AKEGA HARUKI</creatorcontrib><creatorcontrib>ASANO HIDEYUKI</creatorcontrib><creatorcontrib>EMOTO FUDEKO</creatorcontrib><title>BIOLOGICAL DENITRIFICATION APPARATUS</title><description>PURPOSE:To efficiently treat sewage, by providing an oxygen-containing gas supply means at the intermediate position in the up-and-down direction of a sludge bed and setting the lower part of said sludge bed to a denitrification part while setting the upper part thereof to an oxidizing part. CONSTITUTION:Raw sewage having an org. substance (methanol) injected therein through an org. substance injection line 5 is supplied to the lower part of a reaction tank 51 through a sewage inflow line 4. Air is introduced into the granular sludge bed 7 formed in the reaction tank 51 at the intermediate position thereof in the form of fine air bubbles from an air diffuser 53 through an air pipe 52 to supply oxygen to the granular sludge bed 7. The raw sewage denitrified herein by the action of denitrifying bacteria undergoes the oxidative decomposition treatment of the excessive org. substance. Further, the sewage reaches the gas-liquid-solid separation part 8 above the sludge bed to be separated into treated water, gas and sludge. 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CONSTITUTION:Raw sewage having an org. substance (methanol) injected therein through an org. substance injection line 5 is supplied to the lower part of a reaction tank 51 through a sewage inflow line 4. Air is introduced into the granular sludge bed 7 formed in the reaction tank 51 at the intermediate position thereof in the form of fine air bubbles from an air diffuser 53 through an air pipe 52 to supply oxygen to the granular sludge bed 7. The raw sewage denitrified herein by the action of denitrifying bacteria undergoes the oxidative decomposition treatment of the excessive org. substance. Further, the sewage reaches the gas-liquid-solid separation part 8 above the sludge bed to be separated into treated water, gas and sludge. By this method, the capacity of the tank can be miniaturized.</abstract><oa>free_for_read</oa></addata></record> |
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| 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 METALLURGY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | BIOLOGICAL DENITRIFICATION APPARATUS |
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