CN102964040A - In-situ repair method for polluted sediment nitrogen nutritive salt and in-situ repairing pile applied to in-situ repair method - Google Patents
In-situ repair method for polluted sediment nitrogen nutritive salt and in-situ repairing pile applied to in-situ repair method Download PDFInfo
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- CN102964040A CN102964040A CN2012105026738A CN201210502673A CN102964040A CN 102964040 A CN102964040 A CN 102964040A CN 2012105026738 A CN2012105026738 A CN 2012105026738A CN 201210502673 A CN201210502673 A CN 201210502673A CN 102964040 A CN102964040 A CN 102964040A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 50
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 37
- 150000003839 salts Chemical class 0.000 title claims abstract description 15
- 239000013049 sediment Substances 0.000 title abstract description 14
- 230000008439 repair process Effects 0.000 title abstract description 13
- 230000000050 nutritive effect Effects 0.000 title abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 67
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000001301 oxygen Substances 0.000 claims abstract description 38
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 38
- 238000005067 remediation Methods 0.000 claims description 25
- 235000016709 nutrition Nutrition 0.000 claims description 12
- 230000035764 nutrition Effects 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 31
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 24
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- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 2
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention discloses an in-situ repair method for polluted sediment nitrogen nutritive salt and an in-situ repairing pile applied to the in-situ repair method, and belongs to the field of sediment in-situ repair. The in-situ repair method comprises the following steps of (1) mixing a nitrogen immobilization material and a slow-release oxygen material according to a mass ratio of (5-15):1; (2) putting the mixed material into in-situ repairing piles; (3) vertically inserting the in-situ repairing piles into sediment so that the in-situ repairing piles are uniformly distributed on a plane of an area to be repaired; and (4) covering the mixed material in the step (1) on the surface of the sediment with the inserted in-situ repairing piles to obtain a sediment in-situ covering layer with the thickness of 20-30 cm. According to the in-situ repair method disclosed by the invention, ammonia nitrogen in the sediment can be adsorbed, the diffusion of polluted substances to upper covering water can be reduced, dissolved oxygen in the sediment and a hydrospheric surface is improved, the growth of aboriginal denitrified bacteria is facilitated, and nitrogen in the sediment is facilitated to be metabolized out of a system so that the purpose of in-situ repair of surface water sediment is realized.
Description
Technical field
The invention belongs to the settling original position and repair the field, more particularly, relate to a kind of original position reparation stake that is subjected to the sedimental in-situ remediation method of nitrogen nutrition salt and organic severe contamination thereof and is used for the method, the method application function material improves sedimental microhabitat, and then strengthens indigenous microorganism to settling nitrogen nutrition salt and organic cleaning action thereof.
Background technology
In country water pollution is controlled in the more and more stricter situation, the point and the face source load that flow into surface water body reduce gradually, and are become gradually the important source of pollution of surface water body by the endogenous pollution that settling brings.The oxygen that the metabolic exhaustion of Effects of Organic Matter in Sediments is a large amount of, the metabolism of anaerobion under the anaerobic environment so that the nutritive element nitrogen content raises, and then causes the series of environmental problems such as release, body eutrophication, algal tufa of ammonia nitrogen.
To studies show that of nitrogen release and Mechanism thereof in the settling, nitrogen in the organic matter has been resolved into the inorganic ammonia nitrogen of easier migration by microorganism, ammonia nitrogen is oxidized to nitrate under aerobic condition, through denitrification nitrogen is removed from system with the form of nitrogen again.But because aerobic organic content is higher in the settling, the dissolved oxygen that is consumed has little time to replenish, and causes nitrification to be obstructed, and causes the accumulation of ammonia nitrogen in water body and the settling.Therefore dissolved oxygen is the key environmental factors that ammonia nitrogen discharges in the control settling.
Settling nutritive salt pollution reduction technology mainly contains dystopy treatment technology and in-situ treatment technology.Wherein the dystopy treatment technology mainly is to shift by the presence of pollution sources of dredging with water body, but its quantities is large, and cost is high, and the water body after the dredging can form new deposition again behind certain hour.And based technique for in-situ remediation need not the trend place that a large amount of engineerings become sediment remediation.
The settling based technique for in-situ remediation mainly contains physics covering, oxygenic aeration, chemical oxidation and bioremediation technology.It mainly is the transmission of retardance ammonia nitrogen that physics covers, and oxygenic aeration and chemical oxidation then mainly are to build the good site conditions with certain dissolved oxygen concentration, and biological restoration then is to remove with the nitrogen form by nitrogen in microbial metabolism acceleration water body and the settling.Single processing mode can reach preferably effect in a short time, but is difficult to reach sedimental long-acting repairing effect.There is respectively following problem in present various settling based technique for in-situ remediation:
(1) physics covering material: the covering material that the physics soverlay technique is commonly used is sandstone and cleaning soil etc., and pollution substance still can be discharged in the overlying water after penetrating tectum, and pollution substance is trapped in the settling, becomes the potential risks source.(number of patent application: 201110001391.5), it has preferably effect to the ammonia nitrogen in the underground water to existing patent " a kind of underground water nitrogen-fixation remediation filtering material and preparation method thereof ", is successfully applied to the precedent that fluvial deposit is repaired but there is no.
(2) oxygenic aeration of bed mud: the oxygenic aeration technology has certain requirement to equipment and energy consumption, is not suitable for spread.The chemical oxidation technology might violent change in the water surrounding pH value etc., but effect is not lasting.Such as patent " a kind of underground water reparation with slowly-releasing oxygen material and preparation method thereof " (number of patent application: 201110426869.9) can effectively promote underground oxygen content in water, its oxygen release effect sustainable more than 2 years and to former habitat without larger change, be successfully applied to the precedent that fluvial deposit is repaired but there is no.
(3) adaptability of functional biological: all screening and separating is out from reactor for present most of functional microorganism, also some enrichment is out from indigenous microorganism, but do not changing under the abominable primitive environment condition, the bacterial classification that adds is probably like a fish out of water or be subjected to the competitive inhibitory effect of other microorganisms and can't bring into play its effect.
(4) microbe carrier: surface water body has certain flowability, and the microorganism with repair tends to be taken away by current, therefore has many technology to adopt the mode of microorganism embedding to drop into and carries out the original position reparation in the water body.The material that is widely used at present microbial fixed carrier be mainly sodium alginate, polyvinyl alcohol gel, PVA hydrogel etc. (immobilization ammonia oxidizing bacteria short distance nitration stability study [J]. environmental science, 2008,29 (10): 2835-2840.).The affinity of these carriers and microorganism is good, but the immobilized spherule long-play can cause the problems such as grain expansion, volume increase, physical strength reduces greatly, some are also arranged is the solid support materials that cause with haydite and polymeric particles, but bioaffinity is relatively poor, and these materials may bring environment hidden danger.
Summary of the invention
The technical problem that invention will solve
For the poor problem of long-acting repairing effect that exists in the existing settling based technique for in-situ remediation, the invention provides the in-situ remediation method of a kind of settling nitrogen nutrition salt pollution and repair stake for the original position of the method, the method can be adsorbed the ammonia nitrogen in the settling, reduce pollution substance to the diffusion of overlying water, and the dissolved oxygen at raising S ﹠ W interface, optimum habitat, in-situ construction interface, promote the growth of indigenous denitrifying bacteria, the nitrogen metabolism that accelerates in the settling goes out system, reaches the target that surface water body settling original position is repaired.
Technical scheme
Principle of the present invention:For the transmission of ammonia nitrogen in the settling and shift to new management mechanisms, utilization has the difunctional immobilization material of bioaffinity the absorption of ammonia nitrogen and nitrogen transformation functional microorganism is fixed and support effect, and effect is improved in the habitat of slowly-releasing oxygen material counterweight polluted-water water/sediment interface anaerobic environment, suitable coupling and combined utilization by two kinds of functional materialss, original position is built nitrogen transformation site conditions and the nitrogen transformation process also strengthened, for the original position reparation in ammonia nitrogen heavily contaminated river course provides technical support.By application of the present invention, wish to build the good habitat of following settling and water termination: dissolved oxygen content〉2mg/L, the pH value is 6.5～8.0.In addition, because the Sediment Oxygen Demand of primitive environment is different and have different pH value surge capabilities, in order to build good site conditions, the proportioning of bi-material and cladding thickness then are very important parameters.
Technical scheme of the present invention is as follows:
The in-situ remediation method of a kind of settling nitrogen nutrition of the present invention salt pollution the steps include:
1) get the gentle oxygen release material of nitrogen immobilization material of certain mass, 5～15:1 mixes according to mass ratio.Described nitrogen immobilization material adopts Chinese patent application number: 201110001391.5 disclosed underground water nitrogen-fixation remediation filtering materials; Described slowly-releasing oxygen material adopts Chinese patent application number: 201110426869.9 disclosed underground water reparations are with slowly-releasing oxygen materials.
2) material that step 1) is mixed is packed in the original position reparation stake;
3) described original position reparation stake vertically is inserted in the settling, depth of penetration is 10～20cm, and described original position is repaired stake and evenly distributed on the plane, area to be repaired;
4) material that step 1) is mixed is covered in the settling top layer of squeezing into described original position reparation stake and gets settling original position tectum, and the tectal thickness of described settling original position is 20 ~ 30cm.
The in-situ remediation method of a kind of settling nitrogen nutrition of the present invention salt pollution, described step 4) can not have implementation step 2) to the condition of step 3), the mixture that step 1) is made directly is covered in the settling top layer and gets settling original position tectum, and the tectal thickness of described settling original position is 20 ~ 30cm.
The original position of a kind of in-situ remediation method for the salt pollution of described settling nitrogen nutrition of the present invention is repaired stake, and described original position reparation stake bottom is that cone point, top are round shape, and round-meshed structure is set on the columnar tube wall.
Preferably, the material of described original position reparation stake is stainless steel, and the tube wall diameter is 5cm, and the aperture of the circular hole on the tube wall is 5mm.
Beneficial effect
Compared to existing technology, beneficial effect of the present invention is as follows:
(1) the invention provides the in-situ remediation method of a kind of settling nitrogen nutrition salt pollution, according to material to the adsorptivity of ammonia nitrogen and the demand of biocompatible property improvement, prepare sorbing material with the optimum carrier material after optimizing, according to the characteristic demand of oxygen release agent to high pH value and long-acting oxygen release, made slowly-releasing oxygen material.After the mass ratio mixing of bi-material by 5～15:1, repair stake by original position the nitrogen immobilization material is eased up oxygen release material cloth in the primitive environment of bottom, river, make the dissolved oxygen content of primordial sediment-water termination greater than 2mg/L, the pH value is controlled at 6.5～8.0, built aerobic optimum habitat, it is active to have improved indigenous microorganism, is conducive to degraded organic in the primitive environment, and nitrogen metabolism gone out, reach the purpose that the settling original position is repaired;
(2) method of the present invention is from transmission and the metabolic mechanism of ammonia nitrogen, emphatically the potent absorption of pollutent ammonia nitrogen, sedimental primitive environment are improved, promote the tachymetabolism of nitrogen, have long-lasting, and safeguard that simple, easy handling, cost are lower, sedimental original position reparation to lake and river bottom has exemplary role, thereby is a practicable technology of can long-acting control removing bottom, river pollutent, is applicable to spread;
(3) the used material of method of the present invention is mineral material, and cost of manufacture is low, and environmental safety is high.
Description of drawings
Fig. 1 is the structural representation of the original position carrier fill system implemented of method of the present invention;
Fig. 2 is that the original position among the present invention is repaired the structural representation of stake.
Among the figure: 1, settling original position tectum; 2, original position is repaired stake; 3, settling.
Embodiment
Further introduce technical scheme of the present invention below in conjunction with specific embodiment and accompanying drawing.
Embodiment 1
In the urban landscape rivers of city of Jiangsu province, carried out a kind of case verification of settling in-situ remediation method.Because consider side slope safety, this river course not desilting is thorough, before the substrate original position was repaired, water quality was in bad V class, and settling is one of primary pollution source of overlying water nitrate pollution.This average section of river depth of water is 50～100cm, and dry season, water body was detained, and the Pluvial flow velocity is about 0.2～0.3 m/s, and maximum can reach 2 ~ 3 m/s.
Such as Fig. 1, the in-situ remediation method of present embodiment the steps include:
1) preparation of nitrogen immobilization material
According to patent " a kind of underground water nitrogen-fixation remediation filtering material and preparation method thereof " (number of patent application: 201110001391.5), choose clinoptilolite, polygorskite, diatomite, mix according to the quality proportioning of 70:25:5, with H
2O causes the bead of 5mm as matrix material in tablets press, calcining 4 hours in rotary kiln sinters granule strength under 450 ℃〉the nitrogen immobilization material of 30N.
2) slowly-releasing oxygen material preparation
According to patent " a kind of underground water reparation slowly-releasing oxygen material and preparation method thereof " (number of patent application: 201110426869.9), choose calcium peroxide as the oxygen release agent, cement is as plastic binder, and flyash is as the pH buffer reagent, and quartz sand is as the hypertonicity material.With oxygen release agent, plastic binder, pH buffer reagent and hypertonicity material by weight the proportioning of 20:40:20:20 mix, in tablets press, cause the bead of 7mm left and right sides diameter, dry.Slowly-releasing oxygen sheating material is comprised of by the proportioning of quality 70:15:15 silicate minerals, flyash, 100 order quartz sands.In tablets press, wrap the shell of one deck 1mm to inner nuclear material, dry.The granule strength of making〉50N.
3) with the gentle oxygen release material of nitrogen immobilization material, 10:1 mixes according to mass ratio;
4) original position is repaired stake 2 preparations: original position reparation stake 2 bottoms are that cone point, top are round shape, and round-meshed structure is set on the columnar tube wall, the material of original position reparation stake 2 is stainless steel, and the tube wall diameter is 5cm, and the aperture of the circular hole on the tube wall is 5mm.Such as Fig. 2.
5) material that step 3) is mixed is packed in the original position reparation stake 2;
6) described original position reparation stake 2 vertically is inserted in the settling 3, depth of penetration is 10cm, and described original position is repaired stake 2 and evenly distribute spacing 40 * 40cm on the plane, area to be repaired;
7) material that step 3) is mixed is covered in settling 3 top layers of squeezing into described original position reparation stake 2 and gets settling original position tectum 1, and the thickness of described settling original position tectum 1 is 20cm.
The static release quantitative change of total nitrogen and ammonia nitrogen in the period sampling measuring bed mud in the test.The result shows, operation through 6 months, concentration and the organic content of total nitrogen and ammonia nitrogen are respectively 26.7 ~ 74.5mgL-1,11.01 ~ 48.79 mgL-1,15.26%～20.00% in the settling of contrast section, concentration and the organic content of repairing the sedimental total nitrogen in section and ammonia nitrogen are respectively 5.05～8.03 mgL-1,2.75～3.78 mgL-1,9.26%～12.54%, repairing effect is respectively 81% ~ 89%, 75% ~ 92%, 37.5% ~ 39.5%.
In the city of city of Jiangsu province lock control Landscape River Forebay of Pumping Station, carried out a kind of settling in-situ remediation method case verification.Before the substrate original position was repaired, water quality was in bad V class.This average section of river depth of water is 100～150cm, and dry season, water body was detained, and the Pluvial flow velocity is about 0.2～0.3 m/s, and maximum can reach 2 ~ 3 m/s.
In conjunction with Fig. 1, this in-situ remediation method step of present embodiment is as follows:
1) preparation of nitrogen immobilization material
According to patent " a kind of underground water nitrogen-fixation remediation filtering material and preparation method thereof " (number of patent application: 201110001391.5), choose clinoptilolite, polygorskite, diatomite mixes according to the proportioning of 70:25:5, with H
2O causes the bead of 5mm as matrix material in tablets press, calcining 4 hours in rotary kiln sinters granule strength under 450 ℃〉the nitrogen immobilization material of 30N.
2) slowly-releasing oxygen material preparation
According to patent " a kind of underground water reparation slowly-releasing oxygen material and preparation method thereof " (number of patent application: 201110426869.9), choose calcium peroxide as the oxygen release agent, cement is as plastic binder, and flyash is as the pH buffer reagent, and quartz sand is as the hypertonicity material.Oxygen release agent, plastic binder, pH buffer reagent and hypertonicity material weight are mixed than by the proportioning of 40:30:17:13, in tablets press, cause the bead about 7mm, dry.Slowly-releasing oxygen sheating material by silicate minerals, flyash, 100 order quartz sands in mass ratio the proportioning of 45:45:10 form.In tablets press, wrap the shell of one deck 1mm to inner nuclear material, dry.The granule strength of making〉50N slowly-releasing oxygen material.
3) the nitrogen immobilization material that makes is evenly mixed according to the ratio of weight ratio 15:1 with slowly-releasing oxygen material.
4) weir is encircled and hunted down at two ends, section to be repaired, and overlying water is drained with lift pump, forms the pool condition of doing.The nitrogen immobilization material that mixes at settling 3 Surface mulchs and the mixture of slowly-releasing oxygen material, thickness is 30cm.
DO in the continuous monitoring overlying water, pH value, the static release quantitative change of total nitrogen and ammonia nitrogen in the period sampling measuring bed mud in the test.The result shows that through 6 months operation, the burst size of total nitrogen and ammonia nitrogen was 26.7 ~ 74.5mgL in the settling of contrast section
-1, 11.01 ~ 48.79 mgL
-1, 16.23%～19.50%, the burst size of repairing the sedimental total nitrogen in section and ammonia nitrogen is respectively 4.35～6.78 mgL
-1, 2.04～3.45 mgL
-1, 9.06%～11.55%, repairing effect is respectively 84% ~ 91%, 81% ~ 93%, 40.77% ~ 44.18%.
Embodiment 3
In the urban landscape rivers in Anhui Province city, carried out a kind of case verification of settling in-situ remediation method.Its method steps is substantially with embodiment 1, and its difference is, the described nitrogen immobilization material oxygen release material that eases up, and 5:1 mixes according to mass ratio; The depth of penetration of original position reparation stake 2 is 15cm, the nitrogen immobilization material that mixes at settling 3 Surface mulchs and the mixture of slowly-releasing oxygen material, and cover thickness is 25cm.
The static release quantitative change of total nitrogen and ammonia nitrogen in the period sampling measuring bed mud in the test.The result shows, operation through 6 months, concentration and the organic content of total nitrogen and ammonia nitrogen are respectively 24.7 ~ 72.5mgL-1,11.02 ~ 48.83 mgL-1,15.40%～20.00% in the settling of contrast section, concentration and the organic content of repairing the sedimental total nitrogen in section and ammonia nitrogen are respectively 5.20～7.15 mgL-1,2.75～3.78 mgL-1,9.24%～12.55%, repairing effect is respectively 79% ~ 80.1%, 75% ~ 92%, 37.5% ~ 39.5%.
Claims (4)
1. the in-situ remediation method of settling nitrogen nutrition salt pollution the steps include:
1) get the gentle oxygen release material of nitrogen immobilization material of certain mass, 5～15:1 mixes according to mass ratio;
2) material that step 1) is mixed is packed in the original position reparation stake (2);
3) described original position is repaired stake (2) and vertically be inserted in the settling (3), depth of penetration is 10～20cm, and described original position is repaired stake (2) and evenly distributed on the plane, area to be repaired;
4) material that step 1) is mixed is covered in settling (3) top layer of squeezing into described original position reparation stake (2) and gets settling original position tectum (1), and the thickness of described settling original position tectum (1) is 20 ~ 30cm.
2. the in-situ remediation method of settling nitrogen nutrition salt pollution, it is characterized in that, described step 4) can not have implementation step 2) to the condition of step 3), the mixture that step 1) is made directly is covered in settling (3) top layer and gets settling original position tectum (1), and the thickness of described settling original position tectum (1) is 20 ~ 30cm.
3. an original position that is used for the in-situ remediation method of settling nitrogen nutrition claimed in claim 1 salt pollution is repaired stake, it is characterized in that, it is that cone point, top are round shape that described original position is repaired stake (2) bottom, and round-meshed structure is set on the columnar tube wall.
4. the original position of the in-situ remediation method for the salt pollution of settling nitrogen nutrition according to claim 3 is repaired stake, it is characterized in that, the material that described original position is repaired stake (2) is stainless steel, and the tube wall diameter is 5cm, and the aperture of the circular hole on the tube wall is 5mm.
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|---|---|---|---|
| CN201210502673.8A CN102964040B (en) | 2012-11-30 | 2012-11-30 | In-situ repair method for polluted sediment nitrogen nutritive salt and in-situ repairing pile applied to in-situ repair method |
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|---|---|---|---|
| CN201210502673.8A CN102964040B (en) | 2012-11-30 | 2012-11-30 | In-situ repair method for polluted sediment nitrogen nutritive salt and in-situ repairing pile applied to in-situ repair method |
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|---|---|
| CN102964040A true CN102964040A (en) | 2013-03-13 |
| CN102964040B CN102964040B (en) | 2014-07-09 |
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| CN201210502673.8A Active CN102964040B (en) | 2012-11-30 | 2012-11-30 | In-situ repair method for polluted sediment nitrogen nutritive salt and in-situ repairing pile applied to in-situ repair method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106818264A (en) * | 2017-03-30 | 2017-06-13 | 安徽理工大学 | A kind of circular steel pile tube and its construction method for coordinating system of taproot arbor reinforcing side slope |
| CN107540181A (en) * | 2017-09-28 | 2018-01-05 | 中冶华天工程技术有限公司 | Black-odor riverway bed mud covering material preparation method |
| CN109824140A (en) * | 2018-10-18 | 2019-05-31 | 北京博诚立新环境科技股份有限公司 | A kind of underground water home position strengthening biological renovation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0259095A (en) * | 1988-08-25 | 1990-02-28 | Toa Harbor Works Co Ltd | Method for improving water quality and deposit |
| CN101811022A (en) * | 2010-05-06 | 2010-08-25 | 杭州贝洋科技有限公司 | Preparation of heavy metal adsorbent, adsorbent plunger and application |
| CN102336467A (en) * | 2011-06-24 | 2012-02-01 | 北京工业大学 | Oxygen-release material for ground water in situ aerobic bioremediation, and preparation method for the same |
| CN102424446A (en) * | 2011-10-18 | 2012-04-25 | 和濡水尚科技(北京)有限公司 | Method for treating black and stink river and lake water body in city |
| CN102659295A (en) * | 2012-04-26 | 2012-09-12 | 大恩(天津)环境技术研发有限公司 | Liner type sediment ecological restoration system |
-
2012
- 2012-11-30 CN CN201210502673.8A patent/CN102964040B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0259095A (en) * | 1988-08-25 | 1990-02-28 | Toa Harbor Works Co Ltd | Method for improving water quality and deposit |
| CN101811022A (en) * | 2010-05-06 | 2010-08-25 | 杭州贝洋科技有限公司 | Preparation of heavy metal adsorbent, adsorbent plunger and application |
| CN102336467A (en) * | 2011-06-24 | 2012-02-01 | 北京工业大学 | Oxygen-release material for ground water in situ aerobic bioremediation, and preparation method for the same |
| CN102424446A (en) * | 2011-10-18 | 2012-04-25 | 和濡水尚科技(北京)有限公司 | Method for treating black and stink river and lake water body in city |
| CN102659295A (en) * | 2012-04-26 | 2012-09-12 | 大恩(天津)环境技术研发有限公司 | Liner type sediment ecological restoration system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106818264A (en) * | 2017-03-30 | 2017-06-13 | 安徽理工大学 | A kind of circular steel pile tube and its construction method for coordinating system of taproot arbor reinforcing side slope |
| CN106818264B (en) * | 2017-03-30 | 2023-05-05 | 安徽理工大学 | Construction method of circular steel pipe pile for reinforcing side slope by matching with straight root system arbor |
| CN107540181A (en) * | 2017-09-28 | 2018-01-05 | 中冶华天工程技术有限公司 | Black-odor riverway bed mud covering material preparation method |
| CN109824140A (en) * | 2018-10-18 | 2019-05-31 | 北京博诚立新环境科技股份有限公司 | A kind of underground water home position strengthening biological renovation method |
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