CN102531301A - Bottom sediment stabilizing agent and application thereof - Google Patents
Bottom sediment stabilizing agent and application thereof Download PDFInfo
- Publication number
- CN102531301A CN102531301A CN2011104582154A CN201110458215A CN102531301A CN 102531301 A CN102531301 A CN 102531301A CN 2011104582154 A CN2011104582154 A CN 2011104582154A CN 201110458215 A CN201110458215 A CN 201110458215A CN 102531301 A CN102531301 A CN 102531301A
- Authority
- CN
- China
- Prior art keywords
- bed mud
- stabilization
- reagent
- stabilization reagent
- bottom sediment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention belongs to the technical field of environment protection and relates to a bottom sediment stabilizing agent for stabilization of bottom sediment and application thereof. The bottom sediment stabilizing agent comprises the following components in weight percentage: 17-25 percent of nano-ferrum powder and 75-83 percent of water. The raw materials of the bottom sediment stabilizing agent are easy to obtain and low in price; the leaching toxicity of heavy metals in the stabilized bottom sediment is greatly reduced; after the bottom sediment is stabilized, heavy metal ions are well stabilized, so that the leaching toxicity of the heavy metals is greatly reduced; therefore, the bottom sediment stabilizing agent is particularly applicable to the stabilization of the bottom sediment in the river channel dredging process.
Description
Technical field
The invention belongs to environmental technology field, relate to a kind of bed mud stabilization reagent that is used for the bed mud stabilization and uses thereof.
Background technology
Bed mud is the source and the remittance of pollutent in the water surrounding, and its principal pollutant comprise like heavy metals such as cadmium, nickel, chromium, copper, zinc, lead.When reduced gradually in the pollutent source of importing in the water body, polluted bed mud still can make the water body quality deteriorated, and then aquatic ecological and human being's production life etc. is had a negative impact.If mishandling, then maybe the soil and the underground water of surrounding environment be polluted, and then the ecology of environment is damaged the dredging bed mud.There are secondary pollution risk, the higher problem that can't be applicable to extensive processing of processing cost and at present the dystopy recovery technique of polluted bed mud is faced mostly.Therefore, be necessary to study the new technology of the pollutions such as heavy metal of administering the dredging bed mud.
The heavy metal treatment process of dredging bed mud mainly contains drip washing and stabilization.Owing to utilize drip washing repairing heavy metal pollution bed mud, expensive not only, and have the risk of secondary pollution.Though and stabilization technology can not reduce the content of heavy metal in the bed mud, can make that the form of heavy metal changes to residual form in the bed mud, and then reduce the bio-toxicity of heavy metal.
Therefore, need to reduce the leaching toxicity of bed mud, just can avoid its secondary pollution in the process of recycling.Traditional mode is to add solidifying agent such as cement and lime, and these modes need be added wide variety of materials, and addition surpasses 30%; Increased quantity of refuse,, also possibly reverse and become mud if meet water again; Simultaneously, bad to the stabilization results of the bigger heavy metal of toxicity such as Cd, Cr.And adopting the mode of adding nanometer iron powder to come stabilization mud, its addition is few, and the stabilization of the bigger heavy metal of toxicity such as Cd, Cr is had effect preferably, can avoid it when recycling, to produce bigger secondary pollution.
Summary of the invention
For overcoming the shortcoming of stabilization reagent in the prior art, the present invention provides the bed mud stabilization reagent and the application thereof of the simple and stabilization excellent performance of a kind of composition.Stabilization reagent of the present invention is specially adapted to the stabilization of lake dredging bottom-mud.Contain nanometer iron powder and water in this stabilization reagent.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of bed mud stabilization reagent, process by comprising following components in weight percentage:
Nanometer iron powder 17%～25%,
Water 75%～83%.
The weight percent of described water preferred 80%.
Described nanometer iron powder is the nano-scale particle material, and its PM for particulate matter surface is a Z 250, and the inherence is a fe, preferred α-Fe.
The particle diameter of described nanometer iron powder is 50-80nm, preferred 70nm.
2FeO(OH)+3H
2→2Fe
0+4H
2O
3Fe
0+4H
2O→Fe
3O
4+4H
2
Wherein FeO (OH) is from FeSO
4With separate out in other substance reactions, and α-Fe to be FeO (OH) produce in the environment of heating with hydrogen, α-Fe and water vapour reaction generation magnetite simultaneously.
A kind of above-mentioned bed mud stabilization reagent is used for stablizing the purposes of bed mud, comprises following steps:
(1) takes by weighing nanometer iron powder and water according to the above ratio, it is stirred, form hydrogel liquid, obtain bed mud stabilization reagent;
(2) the stabilization reagent with step (1) preparation adds in the dredging bed mud, makes the stabilization reagent thorough mixing of bed mud and interpolation;
(3) the middle bed mud that adds overstabilization reagent of step (2) is laid on ground, its leaching toxicity of stable back can reduce greatly under the condition of ventilation, shading.
In the described step (2), churning time is 10～15 minutes, puts into vibrating machine vibration 2～3 hours again.
In the described step (2), the amount ratio of stabilization reagent and bed mud is the described stabilization reagent of 500～700mL step (1)/1Kg bed mud.
In the described step (3), be 500～550h steady time.
Bed mud stabilization reagent of the present invention will react with the heavy metal in the bed mud, and its chemical structure is changed, and forms more stable chemical substance, thereby reduces the leaching toxicity of dredging bed mud greatly.Wherein the reaction formula of Cr, Fe, Cu is following:
Cr
2O
7 2-+3Fe+7H
2O→Cr
2Fe
3(OH
-)
12+2OH
-
Pb
3O
4+Fe
3O
4→3PbFe
2O
4
CuO+Fe
3O
4+H
2O→CuFeO
2+2FeO(OH)
Above raw material scene proportionally adds the mud whipping device.
The present invention has following beneficial effect:
Stabilization reagent material of the present invention is easy to get, and is cheap, and the leaching toxicity through the heavy metal in the bed mud after the stabilization reduces greatly.The present invention has good stabilising effect to heavy metal ion after the bed mud stabilization, make its heavy metal leach toxicity and reduce significantly, is specially adapted to the stabilization of lake dredging bottom-mud.
Description of drawings
Fig. 1 is nanometer iron powder particulate structure iron in the present invention's enforcement.
Embodiment
Below in conjunction with embodiment the present invention is described further, but protection scope of the present invention never only limits to embodiment.
Embodiment 1
(1) preparation stabilization reagent
With 17 kilograms of particle diameters is the tap water of 70nm nanometer iron powder (as shown in Figure 1) and 83 liters; Mixed 10 minutes through stirrer, put into vibrating machine vibration 2～3 hours again, make the stabilization reagent thorough mixing of bed mud and interpolation; Form hydrogel liquid, obtain bed mud stabilization reagent;
(2) interpolation of stabilization reagent
The stabilization reagent that the 83L that step (1) is made mixes adds in the dredging bed mud that 130 kilograms of water cut are about 80% weight; Concrete addition manner is that bed mud, stabilization reagent are sent in the mixing and blending machine with rotary conveyor and worm conveyor respectively; Behind 10-15 minute thorough mixing, belt is sent to stabilization bed mud discharge port;
(3) stablize maintenance
The bed mud that adds overstabilization reagent is laid on ground, keeps ventilating, but must not see light, stablize 500h after, its leaching toxicity can reduce greatly.
The contrast and experiment of stabilization reagent of the present invention and other stabilization stable reagent bed muds commonly used is as shown in table 1.
Table 1
Stabilization reagent of the present invention can be used for the stabilization of lake dredging bottom-mud, reduces the leaching toxicity of bed mud heavy metal greatly.Shown in above-mentioned table 1, stabilization reagent of the present invention has the satisfactory stability effect to bed mud, is suitable for the heavy metal repair process of bed mud.
Embodiment 2
(1) preparation bed mud stabilization reagent;
Tap water with 30 kilograms of particle diameters are 70nm nanometer iron powder and 120L mixed 10 minutes through stirrer, put into vibrating machine vibration about 2～3 hours again, made the stabilization reagent thorough mixing of bed mud and interpolation, formed hydrogel liquid, obtained bed mud stabilization reagent;
(2) interpolation of stabilization reagent
The stabilization reagent that the 120L that step (1) is made mixes adds in the dredging bed mud that 200 kilograms of water cut are about 80% weight; Concrete addition manner is that bed mud, stabilization reagent are sent in the mixing and blending machine with rotary conveyor and worm conveyor respectively; Behind 10-15 minute thorough mixing, belt is sent to stabilization bed mud discharge port.
(3) stablize maintenance
The bed mud that adds overstabilization reagent is laid on ground, keeps ventilating, but must not see light, stablize 500h after, its leaching toxicity can reduce greatly.
The contrast and experiment of stabilization reagent of the present invention and other stabilization stable reagent bed muds commonly used is as shown in table 2.
Table 2
Embodiment 3
(1) preparation bed mud stabilization reagent;
Tap water with 50 kilograms of particle diameters are 70nm nanometer iron powder and 150L mixed 10 minutes through stirrer, put into vibrating machine vibration about 2～3 hours again, made the stabilization reagent thorough mixing of bed mud and interpolation, formed hydrogel liquid, obtained bed mud stabilization reagent;
(2) interpolation of stabilization reagent
The stabilization reagent that the 160L that step (1) is made mixes adds in the dredging bed mud that 300 kilograms of water cut are about 80% weight; Concrete addition manner is that bed mud, stabilization reagent are sent in the mixing and blending machine with rotary conveyor and worm conveyor respectively; Behind 10-15 minute thorough mixing, belt is sent to stabilization bed mud discharge port.
(3) stablize maintenance
The bed mud that adds overstabilization reagent is laid on ground, keeps ventilating, but must not see light, stablize 550h after, its leaching toxicity can reduce greatly.
The contrast and experiment of stabilization reagent of the present invention and other stabilization stable reagent bed muds commonly used is as shown in table 2.
Table 2
The above-mentioned description to embodiment is can understand and use the present invention for ease of the those of ordinary skill of this technical field.The personnel of skilled obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (9)
1. bed mud stabilization reagent, it is characterized in that: this reagent is processed by comprising following components in weight percentage:
Nanometer iron powder 17%～25%,
Water 75%～83%.
2. bed mud stabilization reagent according to claim 1 is characterized in that: the weight percent of described water is 80%.
3. bed mud stabilization reagent according to claim 1 is characterized in that: described nanometer iron powder is the nano-scale particle material, and its PM for particulate matter surface is a Z 250, and the center is a fe, preferred α-Fe.
4. bed mud stabilization reagent according to claim 1 is characterized in that: the particle diameter of described nanometer iron powder is 50-80nm, preferred 70nm.
5. arbitrary described bed mud stabilization reagent is used for stablizing the purposes of bed mud among the claim 1-4.
6. purposes according to claim 5 is characterized in that: comprise following steps:
(1) takes by weighing nanometer iron powder and water by the described proportioning of claim 1, it is stirred, form hydrogel liquid, obtain bed mud stabilization reagent;
(2) the stabilization reagent with step (1) preparation adds in the dredging bed mud, makes the stabilization reagent thorough mixing of bed mud and interpolation;
(3) bed mud that adds overstabilization reagent in the step (2) is laid on ground, stable under the condition of ventilation, shading.
7. purposes according to claim 6 is characterized in that: in the described step (2), churning time is 10～15 minutes, puts into vibrating machine vibration 2～3 hours again.
8. purposes according to claim 6 is characterized in that: in the described step (2), the amount ratio of stabilization reagent and bed mud is the described stabilization reagent of 500～700mL step (1)/1Kg bed mud.
9. purposes according to claim 6 is characterized in that: in the described step (3), be 500～550h steady time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104582154A CN102531301A (en) | 2011-12-31 | 2011-12-31 | Bottom sediment stabilizing agent and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104582154A CN102531301A (en) | 2011-12-31 | 2011-12-31 | Bottom sediment stabilizing agent and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102531301A true CN102531301A (en) | 2012-07-04 |
Family
ID=46339517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104582154A Pending CN102531301A (en) | 2011-12-31 | 2011-12-31 | Bottom sediment stabilizing agent and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102531301A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964659A (en) * | 2014-05-08 | 2014-08-06 | 南京大学 | Method for solidifying lead-containing sludge by utilizing iron-containing sludge generated by Fenton reagent method |
| CN104743758A (en) * | 2015-03-13 | 2015-07-01 | 同济大学 | Dredged sediment stabilizing reagent, preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050199556A1 (en) * | 2004-03-11 | 2005-09-15 | Zhang Wei-Xian | Dispersed zero-valent iron colloids |
-
2011
- 2011-12-31 CN CN2011104582154A patent/CN102531301A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050199556A1 (en) * | 2004-03-11 | 2005-09-15 | Zhang Wei-Xian | Dispersed zero-valent iron colloids |
Non-Patent Citations (1)
| Title |
|---|
| 王新新等: "底泥铬污染的纳米铁粉修复及其土壤酶活性动态", 《生态环境》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964659A (en) * | 2014-05-08 | 2014-08-06 | 南京大学 | Method for solidifying lead-containing sludge by utilizing iron-containing sludge generated by Fenton reagent method |
| CN103964659B (en) * | 2014-05-08 | 2015-09-16 | 南京大学 | A kind of iron containing sludge utilizing Fenton reagent method to produce solidifies the method for leaded mud |
| CN104743758A (en) * | 2015-03-13 | 2015-07-01 | 同济大学 | Dredged sediment stabilizing reagent, preparation method and application thereof |
| CN104743758B (en) * | 2015-03-13 | 2017-01-04 | 同济大学 | A kind of Dredged bed mud stabilizing agent, preparation method and applications |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lei et al. | Polyaniline@ magnetic chitosan nanomaterials for highly efficient simultaneous adsorption and in-situ chemical reduction of hexavalent chromium: Removal efficacy and mechanisms | |
| Cai et al. | Sulfidation of zero-valent iron by direct reaction with elemental sulfur in water: Efficiencies, mechanism, and dechlorination of trichloroethylene | |
| CN104971697B (en) | Preparation and application methods for magnetic biochar material used for removing arsenic pollution in water body | |
| CN102897891A (en) | Preparation method of composite potassium permanganate sustained-release agent | |
| CN103464102A (en) | Porous composite adsorbing agent for removing stream substrate sludge contamination and preparation process of agent | |
| CN111548089B (en) | Barrier material with environment repairing function and preparation and use methods thereof | |
| CN105016532B (en) | A kind of processing method of the copper waste water containing complexing of low concentration | |
| CN105008285A (en) | Particulate water treatment agent for environment and method for treating water polluted by harmful substances using same | |
| JP2013177575A (en) | Treatment agent, and method for treating polluted water or polluted soil | |
| Deng et al. | A study by response surface methodology (RSM) on optimization of phosphorus adsorption with nano spherical calcium carbonate derived from waste | |
| Li et al. | Treatment of antimony mine drainage: challenges and opportunities with special emphasis on mineral adsorption and sulfate reducing bacteria | |
| CN108085006A (en) | It is a kind of to be used to repair curing agent of As polluted soil and its preparation method and application | |
| CN102531301A (en) | Bottom sediment stabilizing agent and application thereof | |
| CN113649410B (en) | Process for repairing heavy metal pollution of soil by using nano repairing material | |
| Komaei et al. | Stabilization and solidification of arsenic contaminated silty sand using alkaline activated slag | |
| CN109721147A (en) | Metal ion and the method for preparing lithium ion battery negative material in a kind of recycling waste water | |
| Ren et al. | Retention of Pb (II) by a low-cost magnetic composite prepared by environmentally-friendly plasma technique | |
| JP7376244B2 (en) | Water quality improvement material and its manufacturing method | |
| Yang et al. | Removal of cesium from liquid radioactive waste by in situ electrochemical synthesis of cesium zinc ferrocyanide | |
| Ramamurthy et al. | Surfactant assisted removal of Cu (II), Cd (II) and Pb (II) from contaminated soils | |
| Zeng et al. | Efficient removal of Cd2+ from aqueous solution with a novel composite of silicon supported nano iron/aluminum/magnesium (hydr) oxides prepared from biotite | |
| CN110818047A (en) | Preparation method of polysilicate ferro-manganese graphene flocculant | |
| Wei et al. | Calcium hydroxide coating on highly reactive nanoscale zero-valent iron for in situ remediation application | |
| JP2013116952A (en) | Heavy metal treatment agent and heavy metal treatment method using the same | |
| JP2019135039A (en) | Antimony-containing water treatment method and antimony-containing water treatment apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |