WO1986005221A1 - Method for natural reduction of some injurious substances in upper suboil water magazines - Google Patents
Method for natural reduction of some injurious substances in upper suboil water magazines Download PDFInfo
- Publication number
- WO1986005221A1 WO1986005221A1 PCT/DK1986/000018 DK8600018W WO8605221A1 WO 1986005221 A1 WO1986005221 A1 WO 1986005221A1 DK 8600018 W DK8600018 W DK 8600018W WO 8605221 A1 WO8605221 A1 WO 8605221A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- suboil
- borings
- magazines
- nitrate
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000126 substance Substances 0.000 title claims abstract description 9
- 230000000266 injurious effect Effects 0.000 title claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 37
- 229910002651 NO3 Inorganic materials 0.000 abstract description 21
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052742 iron Inorganic materials 0.000 abstract description 17
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052748 manganese Inorganic materials 0.000 abstract description 8
- 239000011572 manganese Substances 0.000 abstract description 8
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract description 4
- 235000002908 manganese Nutrition 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000295146 Gallionellaceae Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 241000556720 Manga Species 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035484 reaction time Effects 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
- C02F3/306—Denitrification of water in soil
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
- C02F1/64—Heavy metal compounds of iron or manganese
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
Definitions
- the present invention concerns a method for na ⁇ tural reduction of some injurious substances in upper suboil water magazines of that kind sta ⁇ ted in the characterizing part of claim 1.
- the concentration of nitrate is highest in free suboil water magazines without occurence of pro ⁇ tecting stratum of clay, and typically there is a falling concentration on rising depths.
- the methods for reduction of nitrate concen- tration in the drinking-water known to-day aim at making deeper borings, which often results in too high concentration of iron at the water works, which contents of iron can be removed by means of a single filtration in open or closed filters.
- Establishment of cleaning works is of ⁇ ten able to solve the problems on the short view only.
- suboil water with contents of nitrate will in time use the capacity of nitrate reduction, which exist in the deeper stratum in the form of iron and manganese, and the nitrate concen ⁇ tration will start rising again.
- the method differs from known principles in that way that, when pumping down suboil water with f.ex. dissolved ferro iron into the upper nitrate containing suboil water. a chemical process takes place, which to all appearance is conditional on a certain micro ⁇ biological activity.
- fig. 1 shows a principle plan for the inven- tion, seen from above, and fig. 2 and 3 show the invention in sectio ⁇ nal view.
- the method is characte ⁇ ristic about the utilization of the soil as natu- ral reaction magazine, in that way that around existing reclamation borings A,B,C with too high contents of nitrate is making a number of pump down borings 1,2,3 for pumping down suboil water containing iron around existing borings.
- the suboil water containing iron is pumped up from a number of deeper borings E, which are led down into the grey stratum of sand below the grey stratum of clay, or just down into lower suboil water magazines, where the contents of iron are high.
- the suboil water, which is pumped up, is distribu ⁇ ted for seeping down via the star drain system D and is pumped down via borings 1,2,3, which are lying in some distance from the reclamation bo- rings A,B,C.
- the water works can continue the re ⁇ clamation of drinking water from the existing bo ⁇ rings, without investing in expensive filtersy- stems for removing of iron and manganese etc. from deep borings, and the contents of nitrate fall characteristically down to an acceptable level, as a result of the chemical-biological process and especially as a result of the dilution effect. Further is achieved that the water works by means of the process in the soil get undesirable sub ⁇ stances removed, as iron, manganese, methane, or- * ganic substances etc., which must exist in the deeper lying suboil water magazine.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Geology (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Public Health (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Soil Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Abstract
Method for natural reduction of some injurious substances in upper suboil water magazines comprising a number of pump down borings (1, 2, 3), which is placed around existing water reclamation borings (A, B, C) and a number of seep drains (D) and a number of reclamation borings (E) to lower suboil water magazines, so that water is pumped up from the borings (E), which is led out into drain (D) and pump down borings (1, 2, 3). By the use of said method, the water containing iron and manganese is pumped from lower suboil water magazines out into the upper suboil water magazine containing nitrate, in which a chemical-biological process takes place, which means precipitation of iron - thereafter precipitations of manganese, and at the same time with this the contents of nitrate is reduced.
Description
Method for natural reduction of some injurious substances in upper suboil water magazines.
The present invention concerns a method for na¬ tural reduction of some injurious substances in upper suboil water magazines of that kind sta¬ ted in the characterizing part of claim 1.
The origin of the nitrate problem and influen¬ ce of the nitrate on human beings and environ¬ ment are in the course of time known to most people. It is also known that many waterworks and individual works have attained or will at¬ tain to the highest limit of nitrate into the drinking-water.
The concentration of nitrate is highest in free suboil water magazines without occurence of pro¬ tecting stratum of clay, and typically there is a falling concentration on rising depths.
When boring through water-bearing strata of sand, a characteristic colour change is often noticed, from red and yellow colours to more greyish co¬ lours. The phenomenon has in a way been known to well-borers and geologists for many years. It has also been known that the water in the red strata of sand is iron- and manganese free, whereas in the grey strata there are high contents of dis¬ solved iron and manganese.
At comparatively resent investigations in the geo- chemical area it has become known that according to the contents of nitrate the fact is reversedly
_&
accordingly small contents of nitrate in grey strata, while the contents of nitrate is high in the red upper water-bearing strata of sand.
The methods for reduction of nitrate concen- tration in the drinking-water known to-day aim at making deeper borings, which often results in too high concentration of iron at the water works, which contents of iron can be removed by means of a single filtration in open or closed filters. Establishment of cleaning works is of¬ ten able to solve the problems on the short view only. On reclamation from greater depths., suboil water with contents of nitrate will in time use the capacity of nitrate reduction, which exist in the deeper stratum in the form of iron and manganese, and the nitrate concen¬ tration will start rising again.
The iron and manganese, which in the course of many years are removed by means of filters, are therefore to put it mildly "wasted", as they in the suboil water zone would have been able to denitrificate/ remove large quantities of nitra¬ te.
Where protecting strata of clay do not exist, it can to-day be necessary to close or move to mana¬ ge the nitrate problems.
The method, as per the invention, differs from known principles in that way that, when pumping down suboil water with f.ex. dissolved ferro iron into the upper nitrate containing suboil water.
a chemical process takes place, which to all appearance is conditional on a certain micro¬ biological activity.
The equation of the chemical reaction of the process:
5 Fe (++) + No 3 (-) I- 5 Fe (OH) + 1/2 N2 T
5 ferro iron atoms reduct 1 nitrate molecule in a biological environment iron bacteria and ni¬ trate reducing bacteria. The result becomes pre- cipitation of iron hydroxid and evaporation of free nitrogen.
Possible presence of free oxygen in the upper sub- oil water magazines will mean that to begin with the iron oxidize from the free oxygen, and then later the reduction of nitrate will take place.
In cases where the contents of iron in the suboil water is small from lower suboil water magazines a delution effect will mostly be achieved, where¬ as the bio-chemical reaction will be essential, where the contents of iron is high.
In the deep lying suboil water other substances exist, which will be able to contribute to a re¬ duction of nitrate, namely methane organic sub¬ stance, hydrogen sulphide etc. As regards man- ganese it is known that precipitation of manga¬ nese demands a forcible oxidation remedy, and the nitrate will not directly be able to oxidi¬ ze manganese. Troubles with manganese precipi¬ tation are known from ordinary sandfilters, but they are often solved, when the filter has fun- tioned some time, i.e. when an active micro-flo¬ ra is built up.
In the upper suboil water magazine manganese will first precipitate rather close to the reclama¬ tion boring, while the iron will precipitate clo¬ se to the pump down boring. The method has imme- diate the great advantage that the reaction time can be done very long, in case it turns out to be necessary for the sake of manganese.
In advance it will not be able to make firm rules to necessary stay, mixture, placing of pump down borings, as the geological- and geochemical con¬ ditions vary much from waterwork to waterwork.
The invention will in the following be descri¬ bed according to the drawing, as
fig. 1 shows a principle plan for the inven- tion, seen from above, and fig. 2 and 3 show the invention in sectio¬ nal view.
The method, as per the invention, is characte¬ ristic about the utilization of the soil as natu- ral reaction magazine, in that way that around existing reclamation borings A,B,C with too high contents of nitrate is making a number of pump down borings 1,2,3 for pumping down suboil water containing iron around existing borings.
The suboil water containing iron is pumped up from a number of deeper borings E, which are led down into the grey stratum of sand below the grey stratum of clay, or just down into lower suboil water magazines, where the contents of iron are high.
The suboil water, which is pumped up, is distribu¬ ted for seeping down via the star drain system D and is pumped down via borings 1,2,3, which are lying in some distance from the reclamation bo- rings A,B,C.
By using this method, as per the invention, is achieved that the water works can continue the re¬ clamation of drinking water from the existing bo¬ rings, without investing in expensive filtersy- stems for removing of iron and manganese etc. from deep borings, and the contents of nitrate fall characteristically down to an acceptable level, as a result of the chemical-biological process and especially as a result of the dilution effect. Further is achieved that the water works by means of the process in the soil get undesirable sub¬ stances removed, as iron, manganese, methane, or- * ganic substances etc., which must exist in the deeper lying suboil water magazine.
Claims
1. Method for natural reduction of some injurious substances in upper suboil water magazines c h a- r a c t e r i z e d by around existing water re- clamation borings (A) is placed a number of pump down borings (1,2,3), and a number of seep drains (D) and a number of reclamation borings (E) to lower suboil water, magazines, so that water is pumped up from (E), which is led out into drain (D) and the pump down borings (1,2,3).
2. Method for natural reduction of some injurious substances in upper suboil water magazines as per claim l c h a r a c t e r i z e d by around exis¬ ting water reclamation borings (A) in upper part of free suboil water magazines is placed a number of pump down borings (1,2,3) and a number of seep drains (D) and reclamation borings (E) led down into free suboil water magazine.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK0996/85 | 1985-03-05 | ||
| DK99685A DK161157C (en) | 1985-03-05 | 1985-03-05 | PROCEDURE FOR PREPARING DRINKING WATER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1986005221A1 true WO1986005221A1 (en) | 1986-09-12 |
Family
ID=8099850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DK1986/000018 WO1986005221A1 (en) | 1985-03-05 | 1986-03-04 | Method for natural reduction of some injurious substances in upper suboil water magazines |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU5582786A (en) |
| DK (1) | DK161157C (en) |
| WO (1) | WO1986005221A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT400597B (en) * | 1994-06-09 | 1996-01-25 | Reisinger Franz | METHOD AND DEVICE FOR PRODUCING A HORIZONTAL FILTER FOUNTAIN |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE335969B (en) * | 1970-08-11 | 1971-06-21 | Smalandsstenars Mekaniska Verk | |
| SE354264B (en) * | 1969-02-13 | 1973-03-05 | Y Reijonen | |
| EP0086863A1 (en) * | 1982-02-18 | 1983-08-31 | GebràDer Sulzer Aktiengesellschaft | Process et apparatus for the biological denitrification of ground water |
| SE434388B (en) * | 1982-11-10 | 1984-07-23 | Vyrmetoder Ab | PROCEDURE FOR REDUCING IRON AND MANGANE CONTENTS IN GROUND WATER |
| EP0133405A1 (en) * | 1983-08-02 | 1985-02-20 | Bureau De Recherches Geologiques Et Minieres | Method for the denitrification of ground water in order to make it drinkable |
| SE439917B (en) * | 1984-01-16 | 1985-07-08 | Vyrmetoder Ab | PROCEDURE TO REDUCE NITRATE CONTENT IN GROUND WATER |
-
1985
- 1985-03-05 DK DK99685A patent/DK161157C/en not_active IP Right Cessation
-
1986
- 1986-03-04 AU AU55827/86A patent/AU5582786A/en not_active Abandoned
- 1986-03-04 WO PCT/DK1986/000018 patent/WO1986005221A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE354264B (en) * | 1969-02-13 | 1973-03-05 | Y Reijonen | |
| SE335969B (en) * | 1970-08-11 | 1971-06-21 | Smalandsstenars Mekaniska Verk | |
| EP0086863A1 (en) * | 1982-02-18 | 1983-08-31 | GebràDer Sulzer Aktiengesellschaft | Process et apparatus for the biological denitrification of ground water |
| SE434388B (en) * | 1982-11-10 | 1984-07-23 | Vyrmetoder Ab | PROCEDURE FOR REDUCING IRON AND MANGANE CONTENTS IN GROUND WATER |
| EP0133405A1 (en) * | 1983-08-02 | 1985-02-20 | Bureau De Recherches Geologiques Et Minieres | Method for the denitrification of ground water in order to make it drinkable |
| SE439917B (en) * | 1984-01-16 | 1985-07-08 | Vyrmetoder Ab | PROCEDURE TO REDUCE NITRATE CONTENT IN GROUND WATER |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT400597B (en) * | 1994-06-09 | 1996-01-25 | Reisinger Franz | METHOD AND DEVICE FOR PRODUCING A HORIZONTAL FILTER FOUNTAIN |
Also Published As
| Publication number | Publication date |
|---|---|
| AU5582786A (en) | 1986-09-24 |
| DK161157B (en) | 1991-06-03 |
| DK161157C (en) | 1991-12-09 |
| DK99685A (en) | 1986-09-06 |
| DK99685D0 (en) | 1985-03-05 |
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