CA2083199A1 - Method for the treatment of sewage and installation to be used for this method - Google Patents

Method for the treatment of sewage and installation to be used for this method

Info

Publication number
CA2083199A1
CA2083199A1 CA002083199A CA2083199A CA2083199A1 CA 2083199 A1 CA2083199 A1 CA 2083199A1 CA 002083199 A CA002083199 A CA 002083199A CA 2083199 A CA2083199 A CA 2083199A CA 2083199 A1 CA2083199 A1 CA 2083199A1
Authority
CA
Canada
Prior art keywords
bioreactor
nitrifying
denitrifying
carried out
treatment
Prior art date
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.)
Granted
Application number
CA002083199A
Other languages
French (fr)
Other versions
CA2083199C (en
Inventor
Eric H. Marsman
Gerardus J. F. M. Vlekke
Leonardus G. C. M. Urlings
Berend A. H. Reitsma
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.)
Tauw Milieu BV
Original Assignee
Individual
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19859922&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2083199(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2083199A1 publication Critical patent/CA2083199A1/en
Application granted granted Critical
Publication of CA2083199C publication Critical patent/CA2083199C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
    • 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
    • C02F3/06—Aerobic processes using submerged filters
    • 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
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2806—Anaerobic processes using solid supports for microorganisms
    • 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
    • C02F3/308—Biological phosphorus removal
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/903—Nitrogenous
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/906—Phosphorus containing

Abstract

The invention relates to a method for the treatment of (raw) sewage in a package plant consisting of three bioreactors in series.
The treatment is being carried out using three types of biomass.
In a first step phosphate is removed by biological means and, at the same time, the chemical and biological oxygen demand is lowered in a highly loaded active sludge system, in a second step a nitrification is carried out, ammonium being converted to nitrate, and in a third step a denitrification is carried out using a carbon source. In the denitrification step acidified surplus sludge from the P-removing step can also be used instead of an external carbon source. The nitrifying and denitrifying bioreactors are both fixed film processes. The thickness of the biofilm on the support material in the nitrifying bioreactor can be influenced by adjusting the aeration system or by adjusting the hydraulic loading. In the de-nitrifying bioreactor the thickness of the biofilm can be adjusted by raising the shear by means of raising the superficial velocity in the support material. The system according to the invention makes possible effective treatment of raw sewage in a highly loaded system resulting in the far-reaching removal of COD, nitrogen and phos-phate.
The process can be operated in an alternative mode, where the nitrifying and denitrifying bioreactors are exchanged; first bio-reactor: biological-P-removal and simultaneous reduction of COD, second bioreactor: denitrification and third bioreactor: nitrifi-cation. The effluent of the nitrifying bioreactor is recirculated to the denitrifying bioreactor.
The first step is carried out in a plug flow bioreactor with an anaerobic and an aerobic zone. By using an intermediate settling tank between the first and the second step, it is possible to dis-charge phosphate-rich surplus sludge. The mixing in the nitrifying step is advantageously maintained by aeration under the packages of support material. Mixing in the denitrifying step is accomplished by means of a propellor.
CA 2083199 1991-11-18 1992-11-18 Method for the treatment of sewage and installation to be used for this method Expired - Fee Related CA2083199C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9101917 1991-11-18
NL9101917A NL9101917A (en) 1991-11-18 1991-11-18 METHOD FOR PURIFYING WASTE WATER, AND APPARATUS FOR USING THIS METHOD

Publications (2)

Publication Number Publication Date
CA2083199A1 true CA2083199A1 (en) 1993-05-19
CA2083199C CA2083199C (en) 2003-04-08

Family

ID=19859922

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2083199 Expired - Fee Related CA2083199C (en) 1991-11-18 1992-11-18 Method for the treatment of sewage and installation to be used for this method

Country Status (7)

Country Link
US (1) US5342522A (en)
EP (1) EP0543457B1 (en)
AT (1) ATE157634T1 (en)
CA (1) CA2083199C (en)
DE (1) DE69221993T2 (en)
DK (1) DK0543457T3 (en)
NL (1) NL9101917A (en)

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Also Published As

Publication number Publication date
US5342522A (en) 1994-08-30
ATE157634T1 (en) 1997-09-15
DK0543457T3 (en) 1997-10-20
DE69221993D1 (en) 1997-10-09
CA2083199C (en) 2003-04-08
EP0543457A1 (en) 1993-05-26
EP0543457B1 (en) 1997-09-03
NL9101917A (en) 1993-06-16
DE69221993T2 (en) 1998-03-19

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