CN110723840A - Method and device for removing iron and manganese in underground water - Google Patents
Method and device for removing iron and manganese in underground water Download PDFInfo
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- CN110723840A CN110723840A CN201911138848.XA CN201911138848A CN110723840A CN 110723840 A CN110723840 A CN 110723840A CN 201911138848 A CN201911138848 A CN 201911138848A CN 110723840 A CN110723840 A CN 110723840A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 222
- 229910001868 water Inorganic materials 0.000 title claims abstract description 221
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 197
- 239000011572 manganese Substances 0.000 title claims abstract description 122
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 122
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000003860 storage Methods 0.000 claims abstract description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 27
- 239000001301 oxygen Substances 0.000 claims abstract description 27
- 238000005273 aeration Methods 0.000 claims abstract description 26
- 238000005086 pumping Methods 0.000 claims abstract description 19
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 17
- 239000003673 groundwater Substances 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 claims description 40
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 5
- 238000012806 monitoring device Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 18
- 230000003647 oxidation Effects 0.000 abstract description 11
- 238000007254 oxidation reaction Methods 0.000 abstract description 11
- 230000000694 effects Effects 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 6
- 229910000616 Ferromanganese Inorganic materials 0.000 abstract description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 13
- 238000012544 monitoring process Methods 0.000 description 5
- 239000003651 drinking water Substances 0.000 description 4
- 235000020188 drinking water Nutrition 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 235000014413 iron hydroxide Nutrition 0.000 description 4
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 4
- 229960004887 ferric hydroxide Drugs 0.000 description 3
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000005844 autocatalytic reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910009112 xH2O Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- IPJKJLXEVHOKSE-UHFFFAOYSA-L manganese dihydroxide Chemical compound [OH-].[OH-].[Mn+2] IPJKJLXEVHOKSE-UHFFFAOYSA-L 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/206—Manganese or manganese compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a method for removing iron and manganese in underground water, which comprises the following steps: step S01: pumping underground water through a deep well pump and conveying the underground water to a ground water storage tank; step S02: detecting the iron content of the pumped groundwater in a reservoir; step S03: conveying water with iron content not less than 0.3mg/L to a jet pump aeration device for oxygenation treatment to obtain oxygenated water; step S04: and (4) recharging the oxygen-containing water, and recharging the oxygen-containing water containing the micro-bubbles into the stratum through gas-water separation. The method organically combines the stratum ferromanganese removal method and the contact oxidation method demanganization process, can ensure that effluent meets the requirements of iron and manganese, and has stable treatment effect and simple process flow. The invention also discloses an iron and manganese removing device for the underground water.
Description
Technical Field
The invention relates to a method and a device for removing iron and manganese in underground water, belonging to the field of water treatment.
Background
Iron and manganese are the main constituent elements of the earth's crust and are widely present in nature. Because of the filtering effect of the stratum on the underground water, iron and manganese in the underground water often exist in the form of bivalent iron and bivalent manganese. Iron and manganese are also necessary trace elements for human bodies, and the water contains trace iron and manganese which are generally considered to be harmless to the human bodies. However, the contents of iron and manganese in underground water in many areas of China exceed the standard, so that the iron and manganese content of underground water not only influences the requirements on sensory indexes such as color, taste and smell when used as domestic water, but also can generate spots on utensils and washings, and can also cause adverse effects on various industries such as papermaking, spinning, printing and dyeing, chemical industry and leather when used as production water. Therefore, when groundwater containing iron and manganese is used as a water source, iron and manganese removal treatment is required. China 'sanitary Standard for Drinking Water' stipulates: iron is less than 0.3mg/L, manganese is less than 0.1 mg/L.
At present, the mature process for removing iron and manganese from underground water in China is a contact oxidation process. After the underground water containing iron and manganese is aerated, the underground water is filtered by a filter taking natural manganese sand (the content of manganese dioxide is generally 30-40%) as a filter material, so that iron hydroxide and high-valence manganese hydroxide can be gradually attached to the surface of the filter material to form an iron active filter membrane and a manganese active filter membrane respectively. The active filter membrane has contact catalysis effect, can greatly accelerate the oxidation speed, realizes the contact oxidation of iron and manganese under the condition of lower pH, and is oxidized into Fe (OH) by the dissolved oxygen in water3And high valence manganese and are trapped in the filter layer.
Iron has a lower redox potential than manganese, divalent manganese is more difficult to oxidize to tetravalent manganese, and manganese removal is much more difficult than iron. In addition, when iron and manganese coexist, bivalent iron and tetravalent manganese become reducing agents, oxidation of bivalent manganese is greatly hindered, and interference on manganese is formed. Therefore, when iron and manganese coexist, the removal of iron is completed before the removal of manganese is started. In engineering, a two-stage filtration mode is adopted, namely two groups of filters are adopted, namely iron is filtered first and then manganese is filtered. However, the two-stage filtration mode needs at least two groups of filters, so that the investment on equipment is high and the cost is high.
In addition to the above-described contact oxidation process, there is a new process for removing iron and manganese by passing water through an oxidizing formation, but since manganese is less oxidized than iron, it is difficult to cultivate a mature demanganizing formation, which has a much longer maturation period than that of iron removal, sometimes even several months. Therefore, the new process is not ideal for removing manganese, and further optimization of the process is needed.
Disclosure of Invention
The invention aims to provide a method and a device for removing iron and manganese from underground water, the device has small occupied area and low energy consumption, reduces the investment cost and can meet the requirements of sanitary standards for drinking water on iron and manganese; the method has stable treatment effect and can ensure that the effluent meets the requirements on iron and manganese.
In order to solve the technical problems, the invention adopts the following technical scheme: a method and a device for removing iron and manganese in underground water comprise the following steps:
step S01: pumping underground water through a deep well pump and conveying the underground water to a ground water storage tank;
step S02: detecting the iron content of the pumped groundwater in a reservoir;
step S03: conveying water with iron content not less than 0.3mg/L to a jet pump aeration device for oxygenation treatment to obtain oxygenated water;
step S04: recharging the oxygen-containing water, and recharging the oxygen-containing water containing the micro-bubbles into the stratum through gas-water separation;
step S05: repeating the step S01 to the step S04 to ensure that the iron content in the water after oxygenation treatment and/or recharging treatment is lower than 0.3 mg/L;
step S06: performing the oxygenation treatment on the water with the iron content of less than 0.3mg/L after the treatment of the step S05;
step S07: and (4) enabling the water after the oxygen charging treatment in the step (S06) to pass through a manganese sand filter material with the manganese dioxide content of 30-40% so that the manganese content in the water is less than 0.1 mg/L.
In the method and the device for removing iron and manganese in underground water, the concentration of the dissolved oxygen in the oxygenated effluent is 80-90% of the saturation value.
In the foregoing method and apparatus for removing iron and manganese from groundwater, the number of times of repeating steps S01 to S04 is 10 to 15.
The method organically combines the stratum iron and manganese removal method and the contact oxidation iron and manganese removal method to form a simpler method with better iron and manganese removal effect and more stability, and particularly relates to the following steps:
first, removing iron from stratum
Firstly, a deep well pump is started to pump underground water from a pumping well to a ground water storage tank, a liquid level meter is arranged in the water storage tank, and a signal is sent to close the deep well pump after a set water level is reached. The water storage tank is provided with an on-line iron content monitoring device, and if the iron content in the pumped water is not less than 0.3mg/L, the water needs to be refilled with oxygen.
The oxygenation is to introduce water in the water storage tank into a jet pump aeration device, the underground water is oxygenated, and the concentration of dissolved oxygen in the oxygenated water can reach 80-90% of the saturation value. The aerated water contains a large amount of bubbles, and gas-water separation is needed before the aerated water is reinjected into the stratum so as to avoid the phenomenon that the bubbles enter the stratum to generate air resistance.
The recharging mode is a self-recharging mode in a single well, namely pumped underground water is recharged into the previous pumping well pipe after being oxygenated for gas-water separation and finally enters the stratum. The method does not need to arrange a special gas-water separation tank, and uses a self well pipe to carry out gas-water separation. The flow velocity of the reinjection water in the well pipe is not more than 0.1m/s, and bubbles with the diameter of more than 1-2 mm can be separated. Most of the air which is not dissolved in water is separated and escaped in the well casing, and a small part of the air is carried to the deep part of the well casing by the water in the form of micro bubbles.
By this recharging method, the oxygen-containing water recharging to the stratum enters the stratum along the same path as the outlet water (but in the opposite direction), an automatically closed oxidation zone can be formed in the stratum around the well, the iron and oxygen in the underground water react to form ferric hydroxide, namely an iron filter membrane, and the ferric hydroxide covers the surface of the particles of the aquifer, and the ferric hydroxide can adsorb the ferrous iron in the untreated underground water: fe2++Fe(OH)3·2H2O＝Fe(OH)2(OFe)·2H2O++H+。
After the recharging is finished, the deep-well pump is restarted to send water to the water storage tank, untreated underground water flows through the oxidation zone again, and iron is adsorbed on the iron hydroxide layer. The adsorption capacity of the iron hydroxide layer is limited, however, by autocatalysis, when recharging is carried out again, oxygen reacts with the adsorbed ferrous iron to form new iron hydroxide with new adsorption capacity: 
at this time, the iron content in the pumped water is only slightly lower than that of the raw water, and in order to reduce the iron content in the discharged water to be below 0.3mg/L, a plurality of recharging cycles are possibly needed, and the iron content is gradually reduced along with the increase of recharging times. The recharge frequency is related to factors such as the iron content of underground water, the dissolved oxygen concentration of recharge water, the quantity of the recharge water for one time, the recharge time and the like, and generally, 10 to 15 times is needed for the stratum.
And when the content of iron in the pumped water is detected to be less than 0.3mg/L, the deep-well pump can be closed, and the subsequent demanganization is carried out.
(2) Demanganization of manganese sand filter
And when the iron content in the water is detected to be less than 0.3mg/L, closing the deep well pump, closing a valve leading to the pumping well after the jet pump aeration device, and opening a valve leading to the manganese sand filter. The underground water after iron removal flows into a jet pump aeration device from the water storage tank for oxygenation.
The oxygenated water flows into the manganese sand filter through the water inlet pipe of the manganese sand filter. The manganese sand filter is filled with a manganese sand filter material, wherein the content of manganese dioxide is 35%, and hydroxide of high-valence manganese is gradually attached to the surface of the filter material to form a manganese filter membrane, so that black or dark brown manganese calcined sand is formed. The manganese filter membrane has a contact catalysis effect, can greatly accelerate the oxidation speed of bivalent manganese, and can ensure that the bivalent manganese in water can be oxidized into high-valence manganese by dissolved oxygen under a lower pH condition: mn2++MnO2·xH2O＝MnO2·MnO·(x-1)H2O+2H+。
After the bivalent manganese adsorbed by the manganese filter membrane is oxidized and hydrolyzed, a new manganese active filter membrane substance is generated to take part in the reaction, so the manganese removing process of the manganese active filter membrane is also an autocatalytic reaction process, namely, the reaction product is also a catalyst: MnO2·MnO·(x-1)H2O+1/2O2+H2O＝2MnO2·xH2O。
Thus, under the combined action of oxygen and the manganese sand filter material, the bivalent manganese ions in the water are oxidized into manganese dioxide which is absorbed and intercepted by the manganese sand filter material, and the manganese removal process is completed. The filter material has short maturation period, large adsorption capacity and good effluent quality in the initial stage of filtration, and after the treatment is finished, the manganese content in the water is less than 0.1mg/L and reaches the regulations of sanitary Standard for Drinking Water.
A method and a device for removing iron and manganese from underground water comprise a water storage tank, a jet pump aeration device, a manganese sand filter and a clean water tank, wherein the jet pump aeration device is connected with a water outlet of the water storage tank, the jet pump aeration device is connected with the manganese sand filter through a first water pipe, a water outlet of the manganese sand filter is connected with a water inlet of the clean water tank, a water pipe branch is arranged on the first water pipe, a water outlet of the water pipe branch is arranged in a pumping well, a deep well pump is arranged in the pumping well, and the deep well pump is connected with the water storage tank.
In the method and the device for removing iron and manganese in underground water, a liquid level meter is arranged in the water storage tank.
In the method and the device for removing iron and manganese in underground water, online monitoring equipment is arranged in the water storage tank.
In the method and the device for removing iron and manganese in underground water, the manganese sand filter is internally provided with the manganese sand filter material with the manganese dioxide content of 30-40%.
In the method and the device for removing iron and manganese in underground water, the water delivery branch pipe is provided with a recharging valve.
Compared with the prior art, the method organically combines the stratum ferromanganese removal method and the contact oxidation method demanganization process, can ensure that effluent meets the requirements of iron and manganese, and has stable treatment effect and simple process flow.
The device can remove iron and manganese in underground water by using a set of jet pump aeration device and a manganese sand filter, so that the device has the advantages of small occupied area, low energy consumption and investment cost reduction, and the iron content and the manganese content in the discharged water are lower than 0.3mg/L and lower than 0.1mg/L, so that the requirements of sanitary standards for drinking water for life on iron and manganese can be met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the construction of the apparatus of the present invention;
fig. 2 is a work flow diagram of the method of the present invention.
Reference numerals: 1-pumping well, 2-deep well pump, 3-water storage tank, 4-jet pump aeration device, 5-manganese sand filter, 6-clean water tank, 7-first water pipe, 8-water conveying branch pipe and 9-recharging valve.
The invention is further described with reference to the following figures and detailed description.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1 of the invention: a method and a device for removing iron and manganese in underground water comprise the following steps: step S01: pumping underground water through a deep well pump and conveying the underground water to a ground water storage tank; step S02: detecting the iron content of the pumped groundwater in a reservoir; step S03: conveying water with iron content not less than 0.3mg/L to a jet pump aeration device for oxygenation treatment to obtain oxygenated water; step S04: recharging the oxygen-containing water, and recharging the oxygen-containing water containing the micro-bubbles into the stratum through gas-water separation; step S05: repeating the step S01 to the step S04 to ensure that the iron content in the water after oxygenation treatment and/or recharging treatment is lower than 0.3 mg/L; step S06: performing the oxygenation treatment on the water with the iron content of less than 0.3mg/L after the treatment of the step S05; step S07: and (4) enabling the water after the oxygen charging treatment in the step (S06) to pass through a manganese sand filter material with the manganese dioxide content of 30-40% so that the manganese content in the water is less than 0.1 mg/L.
Example 2 of the invention: a method and a device for removing iron and manganese in underground water comprise the following steps: step S01: pumping underground water through a deep well pump and conveying the underground water to a ground water storage tank; step S02: detecting the iron content of the pumped groundwater in a reservoir; step S03: conveying water with iron content not less than 0.3mg/L to a jet pump aeration device for oxygenation treatment to obtain oxygenated water; step S04: recharging the oxygen-containing water, and recharging the oxygen-containing water containing the micro-bubbles into the stratum through gas-water separation; step S05: repeating the step S01 to the step S04 to ensure that the iron content in the water after oxygenation treatment and/or recharging treatment is lower than 0.3 mg/L; step S06: performing the oxygenation treatment on the water with the iron content of less than 0.3mg/L after the treatment of the step S05; step S07: and (4) enabling the water after the oxygen charging treatment in the step (S06) to pass through a manganese sand filter material with the manganese dioxide content of 30-40% so that the manganese content in the water is less than 0.1 mg/L. The concentration of the oxygenated effluent dissolved oxygen is 80-90% of the saturation value. The number of times of repeating steps S01 to S04 is 10.
Example 3 of the invention: a method and a device for removing iron and manganese from underground water comprise a water storage tank 3, a jet pump aeration device 4, a manganese sand filter 5 and a clean water tank 6, wherein the jet pump aeration device 4 is connected with a water outlet of the water storage tank 3, the jet pump aeration device 4 is connected with the manganese sand filter 5 through a first water pipe 7, the water outlet of the manganese sand filter 5 is connected with a water inlet of the clean water tank 6, a water conveying branch pipe 8 is arranged on the first water pipe 7, the water outlet of the water conveying branch pipe 8 is arranged in a water pumping well 1, a deep well pump 2 is arranged in the water pumping well 1, and the deep well pump 2 is connected with the water storage tank 3.
Example 4 of the invention: a method and a device for removing iron and manganese from underground water comprise a water storage tank 3, a jet pump aeration device 4, a manganese sand filter 5 and a clean water tank 6, wherein the jet pump aeration device 4 is connected with a water outlet of the water storage tank 3, the jet pump aeration device 4 is connected with the manganese sand filter 5 through a first water pipe 7, the water outlet of the manganese sand filter 5 is connected with a water inlet of the clean water tank 6, a water conveying branch pipe 8 is arranged on the first water pipe 7, the water outlet of the water conveying branch pipe 8 is arranged in a water pumping well 1, a deep well pump 2 is arranged in the water pumping well 1, and the deep well pump 2 is connected with the water storage tank 3. A liquid level meter is arranged in the water storage tank 3. An on-line monitoring device is arranged in the water storage tank 3. The manganese sand filter 5 is internally provided with a manganese sand filter material with the manganese dioxide content of 30-40 percent. A recharging valve 9 is arranged on the water delivery branch pipe 8.
The working process of the device comprises the following steps:
the working process A: the method comprises the steps of starting a deep well pump 2 arranged in a pumping well 1, pumping underground water to a water storage pool 3 which is arranged on the ground and is not far away from the deep well pump 2 by using the deep well pump 2, monitoring the water level in the water storage pool 3 by using a liquid level meter arranged in the water storage pool 3, and sending a signal to a control system to close the deep well pump 2 after the water level reaches a set water level. The iron content of the water stored in the reservoir 3 is detected by an on-line monitoring device arranged at the bottom of the reservoir 3. When the online monitoring equipment detects that the iron content in the water storage tank 3 is not less than 0.3mg/L, the water in the water storage tank 3 is conveyed to the jet pump aeration device 4, and the water is oxygenated by the jet pump aeration device 4, so that the concentration of the oxygenated dissolved oxygen in the effluent can reach 80-90% of the saturation value. The water oxygenated by the jet pump aeration device 4 flows back to the deep well through the water delivery branch pipe 8, the flow rate of the reinjection water in the well pipe of the deep well is not more than 0.1m/s, so that bubbles with the diameter of more than 1-2 mm can be separated by utilizing the well pipe of the deep well, and the phenomenon of air resistance caused by the bubbles entering the stratum is avoided.
The working process B is as follows: and when the iron content in the water detected by the online monitoring equipment is not less than 0.3mg/L, repeating the working process A until the online monitoring equipment detects that the iron content in the water storage tank 3 is less than 0.3mg/L, closing the deep well pump 2, closing the recharge valve 9, and simultaneously opening a valve leading to the manganese sand filter 5.
And a working process C: introducing water with the iron content of less than 0.3mg/L in a water storage tank 3 into a jet pump aeration device 4 for oxygenation treatment, then conveying the water with the iron content of less than 0.3mg/L after oxygenation treatment into a manganese sand filter 5 through a first water conveying pipe 7, enabling the water with the iron content of less than 0.3mg/L to pass through a manganese sand filter material (the manganese dioxide content in the manganese sand filter material is 30% -40%), fully contacting the water with the iron content of less than 0.3mg/L with the manganese sand filter material with the manganese dioxide content of 30% -40%, forming a manganese filter membrane and a manganese active filter membrane, and achieving the purpose of removing manganese in water by utilizing the manganese filter membrane and the manganese active filter membrane. The water depleted of manganese by the manganese sand filter 5 is transported to a clean water basin 6 for subsequent use.
Claims (8)
1. A method and a device for removing iron and manganese in underground water are characterized by comprising the following steps:
step S01: pumping underground water through a deep well pump and conveying the underground water to a ground water storage tank;
step S02: detecting the iron content of the pumped groundwater in a reservoir;
step S03: conveying water with iron content not less than 0.3mg/L to a jet pump aeration device for oxygenation treatment to obtain oxygenated water;
step S04: recharging the oxygen-containing water, and recharging the oxygen-containing water containing the micro-bubbles into the stratum through gas-water separation;
step S05: repeating the step S01 to the step S04 to ensure that the iron content in the water after oxygenation treatment and/or recharging treatment is lower than 0.3 mg/L;
step S06: performing the oxygenation treatment on the water with the iron content of less than 0.3mg/L after the treatment of the step S05;
step S07: and (4) enabling the water after the oxygen charging treatment in the step (S06) to pass through a manganese sand filter material with the manganese dioxide content of 30-40% so that the manganese content in the water is less than 0.1 mg/L.
2. The method and the device for removing iron and manganese in underground water according to claim 1, wherein the concentration of dissolved oxygen in the oxygenated effluent is 80-90% of the saturation value.
3. The method and apparatus for removing iron and manganese from groundwater according to claim 2, wherein the number of times of repeating steps S01-S05 is 10-15.
4. The utility model provides a deironing removes manganese method and device for groundwater, its characterized in that, includes reservoir (3), jet pump aeration equipment (4), manganese sand filter (5) and clean water pond (6), the delivery port of jet aeration equipment (4) and reservoir (3) is connected, jet pump aeration equipment (4) are connected with manganese sand filter (5) through first raceway (7), and the delivery port of manganese sand filter (5) is connected with the water inlet of clean water pond (6), be provided with water delivery branch pipe (8) on first raceway (7), the delivery port of water delivery branch pipe (8) sets up in pumping well (1), be provided with deep-well pump (2) in pumping well (1), deep-well pump (2) with reservoir (3) are connected.
5. The method and the device for removing iron and manganese in underground water according to claim 1, characterized in that a liquid level meter is arranged in the water storage tank (3).
6. The method and the device for removing iron and manganese in underground water according to claim 1, characterized in that an online monitoring device is arranged in the water storage tank (3).
7. The method and the device for removing iron and manganese in underground water according to claim 1, wherein the manganese sand filter (5) is filled with a manganese sand filter material with the manganese dioxide content of 30-40%.
8. The method and the device for removing iron and manganese in underground water according to claim 1, characterized in that a recharging valve (9) is arranged on the water conveying branch pipe (8).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109927A (en) * | 2021-03-17 | 2022-09-27 | 中国科学院过程工程研究所 | Method for removing manganese and magnesium from laterite-nickel ore hydrochloric acid leaching solution |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87106661A (en) * | 1987-09-28 | 1988-04-06 | 湖北工业建筑设计院 | A kind of underground water deferrization and demanganization equipment |
| CN2034972U (en) * | 1988-02-11 | 1989-03-29 | 中国市政工程东北设计院市政工程研究所 | Iron and manganese removing device for groundwater |
| CN1032927A (en) * | 1988-11-16 | 1989-05-17 | 湖南省汉寿县卫生防疫站 | Underground water circulation jet aeration facility for iron and manganese removal |
| JP2004008969A (en) * | 2002-06-07 | 2004-01-15 | Mitsubishi Materials Natural Resources Development Corp | Method for removing iron in water using jet stream generator and system therefor |
| CN1733618A (en) * | 2005-07-27 | 2006-02-15 | 东华大学 | Process and apparatus for removing ferromanganese from underground water |
| CN101712519A (en) * | 2009-09-29 | 2010-05-26 | 汉川市洁波净化有限公司 | Underground water gravity type ferrum and manganese removal continuous drop aeration |
| CN104843899A (en) * | 2014-12-03 | 2015-08-19 | 重庆摩尔水处理设备有限公司 | Advanced purification treatment system for mine water |
| CN107673440A (en) * | 2017-11-22 | 2018-02-09 | 南昌工程学院 | A kind of well and method for removing iron for removing Fe Element in Groundwater |
| CN211871619U (en) * | 2019-11-20 | 2020-11-06 | 华电水务科技股份有限公司 | Iron and manganese removing device for underground water |
-
2019
- 2019-11-20 CN CN201911138848.XA patent/CN110723840A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87106661A (en) * | 1987-09-28 | 1988-04-06 | 湖北工业建筑设计院 | A kind of underground water deferrization and demanganization equipment |
| CN2034972U (en) * | 1988-02-11 | 1989-03-29 | 中国市政工程东北设计院市政工程研究所 | Iron and manganese removing device for groundwater |
| CN1032927A (en) * | 1988-11-16 | 1989-05-17 | 湖南省汉寿县卫生防疫站 | Underground water circulation jet aeration facility for iron and manganese removal |
| JP2004008969A (en) * | 2002-06-07 | 2004-01-15 | Mitsubishi Materials Natural Resources Development Corp | Method for removing iron in water using jet stream generator and system therefor |
| CN1733618A (en) * | 2005-07-27 | 2006-02-15 | 东华大学 | Process and apparatus for removing ferromanganese from underground water |
| CN101712519A (en) * | 2009-09-29 | 2010-05-26 | 汉川市洁波净化有限公司 | Underground water gravity type ferrum and manganese removal continuous drop aeration |
| CN104843899A (en) * | 2014-12-03 | 2015-08-19 | 重庆摩尔水处理设备有限公司 | Advanced purification treatment system for mine water |
| CN107673440A (en) * | 2017-11-22 | 2018-02-09 | 南昌工程学院 | A kind of well and method for removing iron for removing Fe Element in Groundwater |
| CN211871619U (en) * | 2019-11-20 | 2020-11-06 | 华电水务科技股份有限公司 | Iron and manganese removing device for underground water |
Non-Patent Citations (3)
| Title |
|---|
| 潘玉勤等: "《水/土壤源热泵地下换热系统施工技术手册》", 29 February 2016, 黄河水利出版社, pages: 55 * |
| 范惫功: "德国在含水层中除铁除锰的经验", 《公用科技》, vol. 11, no. 2, pages 34 - 38 * |
| 边云峰等: "地下水除铁除锰技术探讨", 《资源与环境科学》, no. 7, pages 210 - 211 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109927A (en) * | 2021-03-17 | 2022-09-27 | 中国科学院过程工程研究所 | Method for removing manganese and magnesium from laterite-nickel ore hydrochloric acid leaching solution |
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