ZA847663B - Avoidance of rising sludge in biological wastewater treatment clarifiers - Google Patents

Avoidance of rising sludge in biological wastewater treatment clarifiers

Info

Publication number: ZA847663B
Authority: ZA; South Africa
Prior art keywords: nitrogen; mixed liquor; clarifier; biomass; pit
Prior art date: 1983-09-29

Application number

ZA847663A

Other languages

English (en)

Inventor

Marshall Louis Spector

Sun-Nan Hong

Robert Peter Seebohm

Original Assignee

Air Prod & Chem

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1983-09-29

Filing date

1984-09-28

Publication date

1986-05-28

1984-09-28 Application filed by Air Prod & Chem filed Critical Air Prod & Chem

1986-05-28 Publication of ZA847663B publication Critical patent/ZA847663B/xx

Links

230000000630 rising effect Effects 0.000 title abstract 2
239000010802 sludge Substances 0.000 title abstract 2
238000004065 wastewater treatment Methods 0.000 title abstract 2
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 10
229910052757 nitrogen Inorganic materials 0.000 abstract 4
239000002028 Biomass Substances 0.000 abstract 3
229910001873 dinitrogen Inorganic materials 0.000 abstract 2
238000007872 degassing Methods 0.000 abstract 1
239000007789 gas Substances 0.000 abstract 1

Classifications

- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0042—Baffles or guide plates
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2405—Feed mechanisms for settling tanks
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2494—Feed or discharge mechanisms for settling tanks provided with means for the removal of gas, e.g. noxious gas, air
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Life Sciences & Earth Sciences (AREA)
Organic Chemistry (AREA)
Engineering & Computer Science (AREA)
Environmental & Geological Engineering (AREA)
Water Supply & Treatment (AREA)
Hydrology & Water Resources (AREA)
Microbiology (AREA)
Biodiversity & Conservation Biology (AREA)
Toxicology (AREA)
Health & Medical Sciences (AREA)
General Chemical & Material Sciences (AREA)
Treatment Of Sludge (AREA)
Separation Of Suspended Particles By Flocculating Agents (AREA)
Activated Sludge Processes (AREA)
Degasification And Air Bubble Elimination (AREA)

ZA847663A 1983-09-29 1984-09-28 Avoidance of rising sludge in biological wastewater treatment clarifiers ZA847663B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US53747083A	1983-09-29	1983-09-29

Publications (1)

Publication Number	Publication Date
ZA847663B true ZA847663B (en)	1986-05-28

Family

ID=24142778

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA847663A ZA847663B (en)	1983-09-29	1984-09-28	Avoidance of rising sludge in biological wastewater treatment clarifiers

Country Status (5)

Country	Link
EP (1)	EP0138118B1 (de)
JP (1)	JPS6090100A (de)
AT (1)	ATE42532T1 (de)
DE (1)	DE3477920D1 (de)
ZA (1)	ZA847663B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10112357A1 (de) *	2001-03-13	2002-10-02	Siemens Axiva Gmbh & Co Kg	Verfahren und Vorrichtung zur biologischen Abwasserreinigung mit integrierter Schlamm (Biomasse)- abtrennung durch Sedimentation unter Druckbeaufschlagung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2257327A1 (en) *	1974-01-10	1975-08-08	Commissariat Energie Atomique	Liq-gas exchange process for water treatment - using ozonised air bubbles to strike interface in con-current flow

1984
- 1984-09-26 JP JP59201387A patent/JPS6090100A/ja active Granted
- 1984-09-27 AT AT84111555T patent/ATE42532T1/de not_active IP Right Cessation
- 1984-09-27 EP EP19840111555 patent/EP0138118B1/de not_active Expired
- 1984-09-27 DE DE8484111555T patent/DE3477920D1/de not_active Expired
- 1984-09-28 ZA ZA847663A patent/ZA847663B/xx unknown

Also Published As

Publication number	Publication date
JPS6090100A (ja)	1985-05-21
ATE42532T1 (de)	1989-05-15
EP0138118A2 (de)	1985-04-24
JPH0137194B2 (de)	1989-08-04
DE3477920D1 (en)	1989-06-01
EP0138118A3 (en)	1986-08-13
EP0138118B1 (de)	1989-04-26

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