WO2008155510A1 - Process control software for the control of hydraulic retention time in a biological reactor - Google Patents
Process control software for the control of hydraulic retention time in a biological reactor Download PDFInfo
- Publication number
- WO2008155510A1 WO2008155510A1 PCT/GB2007/002267 GB2007002267W WO2008155510A1 WO 2008155510 A1 WO2008155510 A1 WO 2008155510A1 GB 2007002267 W GB2007002267 W GB 2007002267W WO 2008155510 A1 WO2008155510 A1 WO 2008155510A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reactor
- control
- retention time
- hydraulic retention
- biological
- Prior art date
Links
- 230000014759 maintenance of location Effects 0.000 title claims abstract description 33
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 5
- 150000002823 nitrates Chemical class 0.000 claims description 4
- 238000010586 diagram Methods 0.000 claims 1
- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
- 239000010841 municipal wastewater Substances 0.000 abstract description 4
- 239000010842 industrial wastewater Substances 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- 101100468275 Caenorhabditis elegans rep-1 gene Proteins 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009118 appropriate response Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003568 thioethers Chemical class 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
- G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
-
- 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
Definitions
- the present invention relates to control software required for the operation of a balance tank reactor as described by Olaopa Process in European Patent No. 1196354 and US Patent No.: 6562237.
- Olaopa Process describes a biological reactor for the reduction/elimination of nitrogen and/or phosphates incorporating balancing of reactor' s constituents in such a way as to maintain a constant hydraulic retention time (HRT) within the tank under variable flow regime.
- HRT hydraulic retention time
- the outlet from the reactor is located below top water level and the outflow can be controlled with a pump or control valve.
- anoxic/anaerobic reactors are defined on the basis of the influent displacing similar volumes on the outlet.
- Olaopa Process (Pat.No.rEP 1 196354 & US 6562237) referred to in this invention is the only anoxic/anaerobic reactor allowing for variable flow rates on the inlet and controlled flow on the outlet of the reactor.
- control panel incorporating computerised software allowing variation of hydraulic retention time within a biological reactor primarily used for the dissimilatory reduction of nitrates to nitrogen.
- the control panel may also have incorporated into it computerised software allowing variation of mixing ratio of the influents into the biological reactor typically crude wastewater and nitrified re-circulating mixed liquor.
- an operator will define a hydraulic retention time and mix-ratio on the control panel.
- the computer programme Upon pressing 'START' on the panel the computer programme will control the volume of nitrified effluent to be mixed with the crude wastewater to the treatment plant and the hydraulic retention time within the biological reactor.
- a hydraulic level sensor will read the top water level in the reactor, calculate the volume of the liquid in the reactor and use the reactor volume and selected hydraulic retention time to set a pumping flow rate out of the reactor. If the level in the tank rises there will then be a corresponding increase in pumping rate and vice versa. This will be sufficient if the software is for the control of hydraulic retention time only.
- the mixing ratio of the re-circulating influent and crude wastewater influent is selected and the desirable hydraulic retention time (HRT) is also selected.
- the incoming flowrate and desirable HRT is used to calculate appropriate hydraulic level in the reactor. Where the desirable hydraulic level does not match existing hydraulic level in the reactor, the discharge pumping rate can be increased or decreased.
- This programme can be used for the control of a flow mix into the reactor (re-circulating nitrified influent and crude wastewater) and maintaining a specified hydraulic retention time under variable flow regimes.
- the volume of liquid in the reactor and the selected hydraulic retention time will be used to calculate the percentage opening of a control valve located on the discharge pipework from the reactor.
- the control panel can contain either or both of the controls described i.e. hydraulic retention time only or hydraulic retention time and mix-ratio.
- control panel according to the present invention remain applicable to the simultaneous control of mix ratios into the anoxic/anaerobic compartment(s) and any control of hydraulic retention time within the tanks.
- control panel can be applied to the aerobic compartment of any biological reactor.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Environmental & Geological Engineering (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/GB2007/002267 WO2008155510A1 (en) | 2007-06-18 | 2007-06-18 | Process control software for the control of hydraulic retention time in a biological reactor |
GB0919349A GB2461466A (en) | 2007-06-18 | 2007-06-18 | Process control software for the control of hydraulic retention time in a biological reactor |
EP20070733270 EP2162804A1 (en) | 2007-06-18 | 2007-06-18 | Process control software for the control of hydraulic retention time in a biological reactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/GB2007/002267 WO2008155510A1 (en) | 2007-06-18 | 2007-06-18 | Process control software for the control of hydraulic retention time in a biological reactor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008155510A1 true WO2008155510A1 (en) | 2008-12-24 |
Family
ID=39011565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2007/002267 WO2008155510A1 (en) | 2007-06-18 | 2007-06-18 | Process control software for the control of hydraulic retention time in a biological reactor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2162804A1 (en) |
GB (1) | GB2461466A (en) |
WO (1) | WO2008155510A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014078761A1 (en) * | 2012-11-16 | 2014-05-22 | Xylem Water Solutions U.S.A., Inc. | Optimized process and aeration performance with an advanced control algorithm |
CN110204033A (en) * | 2019-05-08 | 2019-09-06 | 南开大学 | A kind of method that microorganism electrochemical ammoniumization recycles nitrate nitrogen in waste water |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0302545A2 (en) | 1987-08-07 | 1989-02-08 | SNAMPROGETTI S.p.A. | Process for the biological purification of waste waters |
EP1196354A1 (en) | 1999-06-02 | 2002-04-17 | Tox Olaopa | Biological nutrient removal using "the olaopa process" |
US6562237B1 (en) | 1998-12-04 | 2003-05-13 | Tox Olaopa | Biological nutrient removal using the olaopa process |
WO2003066535A1 (en) * | 2002-02-07 | 2003-08-14 | Lorne Karl | Method and system for controlling a biological reactor unit |
EP1376276A1 (en) * | 2002-06-21 | 2004-01-02 | H2L Co., Ltd | An AI based control system and method for treating sewage/waste water by means of a neural network and a back-propagation algorithm |
US20040217067A1 (en) | 2003-05-01 | 2004-11-04 | Meredith Christopher Edward | Residual wastewater chlorine concentration control using a dynamic weir |
-
2007
- 2007-06-18 GB GB0919349A patent/GB2461466A/en not_active Withdrawn
- 2007-06-18 WO PCT/GB2007/002267 patent/WO2008155510A1/en active Application Filing
- 2007-06-18 EP EP20070733270 patent/EP2162804A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0302545A2 (en) | 1987-08-07 | 1989-02-08 | SNAMPROGETTI S.p.A. | Process for the biological purification of waste waters |
US6562237B1 (en) | 1998-12-04 | 2003-05-13 | Tox Olaopa | Biological nutrient removal using the olaopa process |
EP1196354A1 (en) | 1999-06-02 | 2002-04-17 | Tox Olaopa | Biological nutrient removal using "the olaopa process" |
WO2003066535A1 (en) * | 2002-02-07 | 2003-08-14 | Lorne Karl | Method and system for controlling a biological reactor unit |
EP1376276A1 (en) * | 2002-06-21 | 2004-01-02 | H2L Co., Ltd | An AI based control system and method for treating sewage/waste water by means of a neural network and a back-propagation algorithm |
US20040217067A1 (en) | 2003-05-01 | 2004-11-04 | Meredith Christopher Edward | Residual wastewater chlorine concentration control using a dynamic weir |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014078761A1 (en) * | 2012-11-16 | 2014-05-22 | Xylem Water Solutions U.S.A., Inc. | Optimized process and aeration performance with an advanced control algorithm |
CN104903254A (en) * | 2012-11-16 | 2015-09-09 | 赛莱默水处理美国有限公司 | Optimized process and aeration performance with advanced control algorithm |
US9475715B2 (en) | 2012-11-16 | 2016-10-25 | Xylem Water Solutions U.S.A., Inc. | Optimized process and aeration performance with an advanced control algorithm |
CN110204033A (en) * | 2019-05-08 | 2019-09-06 | 南开大学 | A kind of method that microorganism electrochemical ammoniumization recycles nitrate nitrogen in waste water |
CN110204033B (en) * | 2019-05-08 | 2021-07-23 | 南开大学 | Method for recovering nitrate nitrogen in wastewater through microbial electrochemical ammonification |
Also Published As
Publication number | Publication date |
---|---|
EP2162804A1 (en) | 2010-03-17 |
GB0919349D0 (en) | 2009-12-23 |
GB2461466A (en) | 2010-01-06 |
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