DE2741021A1 - Verfahren zur biologischen abwasserreinigung - Google Patents

Verfahren zur biologischen abwasserreinigung

Info

Publication number: DE2741021A1
Authority: DE; Germany
Prior art keywords: sludge; stage; phase; liquid; liquid flow
Prior art date: 1976-09-17
Legal status (The legal status 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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

DE19772741021

Other languages

German (de)

English (en)

Inventor

Gunnar Aronsson

Lars Goesta Malm

Goesta Tommy Widlund

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Alfa Laval AB

Original Assignee

Alfa Laval AB

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.)

1976-09-17

Filing date

1977-09-12

Publication date

1978-03-23

1977-09-12 Application filed by Alfa Laval AB filed Critical Alfa Laval AB

1978-03-23 Publication of DE2741021A1 publication Critical patent/DE2741021A1/de

Status Withdrawn legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims description 26
239000010865 sewage Substances 0.000 title description 4
238000000746 purification Methods 0.000 title description 2
239000010802 sludge Substances 0.000 claims description 82
238000006213 oxygenation reaction Methods 0.000 claims description 19
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 18
229910052760 oxygen Inorganic materials 0.000 claims description 18
239000001301 oxygen Substances 0.000 claims description 18
239000007788 liquid Substances 0.000 claims description 17
238000005352 clarification Methods 0.000 claims description 14
230000008719 thickening Effects 0.000 claims description 14
239000002351 wastewater Substances 0.000 claims description 14
238000000926 separation method Methods 0.000 claims description 11
239000012071 phase Substances 0.000 claims description 7
238000004065 wastewater treatment Methods 0.000 claims description 7
238000005188 flotation Methods 0.000 claims description 5
239000007791 liquid phase Substances 0.000 claims description 5
235000015844 Citrullus colocynthis Nutrition 0.000 claims 1
240000000885 Citrullus colocynthis Species 0.000 claims 1
238000005119 centrifugation Methods 0.000 claims 1
230000002093 peripheral effect Effects 0.000 claims 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
238000004062 sedimentation Methods 0.000 description 6
239000008213 purified water Substances 0.000 description 4
238000004064 recycling Methods 0.000 description 4
238000005273 aeration Methods 0.000 description 3
239000002245 particle Substances 0.000 description 3
235000015097 nutrients Nutrition 0.000 description 2
239000002562 thickening agent Substances 0.000 description 2
239000002028 Biomass Substances 0.000 description 1
229920001131 Pulp (paper) Polymers 0.000 description 1
238000004140 cleaning Methods 0.000 description 1
239000012141 concentrate Substances 0.000 description 1
238000010276 construction Methods 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
230000006735 deficit Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000010790 dilution Methods 0.000 description 1
239000012895 dilution Substances 0.000 description 1
238000007599 discharging Methods 0.000 description 1
238000000855 fermentation Methods 0.000 description 1
230000004151 fermentation Effects 0.000 description 1
239000000463 material Substances 0.000 description 1
239000003921 oil Substances 0.000 description 1
230000000737 periodic effect Effects 0.000 description 1
238000001556 precipitation Methods 0.000 description 1
239000013049 sediment Substances 0.000 description 1
239000000126 substance Substances 0.000 description 1

Classifications

- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
- C02F1/385—Treatment of water, waste water, or sewage by centrifugal separation by centrifuging suspensions
- 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

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Water Supply & Treatment (AREA)
Hydrology & Water Resources (AREA)
Environmental & Geological Engineering (AREA)
Organic Chemistry (AREA)
Microbiology (AREA)
Biodiversity & Conservation Biology (AREA)
Analytical Chemistry (AREA)
Mechanical Engineering (AREA)
Activated Sludge Processes (AREA)
Physical Water Treatments (AREA)
Centrifugal Separators (AREA)
Treatment Of Sludge (AREA)

DE19772741021 1976-09-17 1977-09-12 Verfahren zur biologischen abwasserreinigung Withdrawn DE2741021A1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE7610325A SE7610325L (sv)	1976-09-17	1976-09-17	Forfarande for genomforande av biologisk avloppsvattenrening

Publications (1)

Publication Number	Publication Date
DE2741021A1 true DE2741021A1 (de)	1978-03-23

Family

ID=20328905

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE19772741021 Withdrawn DE2741021A1 (de)	1976-09-17	1977-09-12	Verfahren zur biologischen abwasserreinigung

Country Status (6)

Country	Link
CA (1)	CA1084179A (fr)
DE (1)	DE2741021A1 (fr)
FR (1)	FR2364861A1 (fr)
GB (1)	GB1563160A (fr)
IT (1)	IT1087506B (fr)
SE (1)	SE7610325L (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4452699A (en) *	1981-05-07	1984-06-05	Shinryo Air Conditioning Co., Ltd.	Method of improving the SVI of mixed liquor in aeration tank

1976
- 1976-09-17 SE SE7610325A patent/SE7610325L/xx unknown
1977
- 1977-09-12 DE DE19772741021 patent/DE2741021A1/de not_active Withdrawn
- 1977-09-12 IT IT2745777A patent/IT1087506B/it active
- 1977-09-12 GB GB37954/77A patent/GB1563160A/en not_active Expired
- 1977-09-16 FR FR7727986A patent/FR2364861A1/fr active Granted
- 1977-09-16 CA CA286,948A patent/CA1084179A/fr not_active Expired

Also Published As

Publication number	Publication date
GB1563160A (en)	1980-03-19
IT1087506B (it)	1985-06-04
FR2364861B1 (fr)	1980-04-30
FR2364861A1 (fr)	1978-04-14
SE7610325L (sv)	1978-03-18
CA1084179A (fr)	1980-08-19

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Legal Events

Date	Code	Title
1978-03-23	OAM	Search report available
1978-05-03	OC	Search report available
1983-10-06	8139	Disposal/non-payment of the annual fee