CN101428872A - Process for treating nickel-containing wastewater with modified coal ash - Google Patents
Process for treating nickel-containing wastewater with modified coal ash Download PDFInfo
- Publication number
- CN101428872A CN101428872A CNA2008102043985A CN200810204398A CN101428872A CN 101428872 A CN101428872 A CN 101428872A CN A2008102043985 A CNA2008102043985 A CN A2008102043985A CN 200810204398 A CN200810204398 A CN 200810204398A CN 101428872 A CN101428872 A CN 101428872A
- Authority
- CN
- China
- Prior art keywords
- nickel
- modified coal
- fly ash
- reaction
- waste water
- 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.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for treating nickel-contained wastewater through modified fly ash. 5g of the modified fly ash is added into 1L of nickel-contained wastewater; the ash and the wastewater are fully stirred and mixed, and are oscillated and react for 24 h at room temperature; after completing the reaction, mud and wastewater are separated from each other so as to complete the treatment on the nickel-contained water, wherein a preparation method for the modified fly ash comprises the following steps: preparing the mixed liquor of the fly ash and 2mol/L sodium hydroxide solution according to the solid-liquid ratio of 1 to 6; carrying out microwave reaction for 20 minutes at 85 DEG C; carrying out stirring reaction for 12h at 100 DEG C; after completing the reaction, cleaning the mixed liquor through deionized water and 95 percent ethanol; saturating the mixed liquor through 1mol/L sodium chloride; and finally obtaining the modified fly ash after drying at 110 DEG C. The modified fly ash has an obvious effect when being used for processing the nickel-contained wastewater with the concentration of 200 mg/L around.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, the method that the power plant's rejected fly ash that utilizes modification of saying so is more specifically handled nickel-containing waste water.
Background technology
Nickel-containing waste water industrial discharge amount is big, is easy to generate secondary pollution, and can enter human body by food chain, produces harm.At present, adopt traditional chemical precipitation method to handle mostly to nickel-containing waste water, though can reach emission standard, consumption of chemical agent is big, and expense is higher.
Power plant's depleted flyash can be used to handle nickel-containing waste water, it is a kind of method of the treatment of wastes with processes of wastes against one another, but the flyash loading capacity of non-modified is on the low side, directly be used for handling nickel-containing waste water can not reach country's " integrated wastewater discharge standard " (GB8978-1996) in to the emission request of nickel (＜1mg/l).
Summary of the invention
Technical problem to be solved by this invention provides the method for utilizing modified coal ash to handle nickel-containing waste water, the flyash specific surface area of modification is big, use modified coal ash handle nickel-containing waste water can reach country's " integrated wastewater discharge standard " (GB8978-1996) in to the emission request of nickel.
Technical solution of the present invention: a kind of method of utilizing modified coal ash to handle nickel-containing waste water, the steps include: in every liter of nickel-containing waste water, to add 5 gram modified coal ashs, ash, water are fully mixed, the 24h of concussion reaction at normal temperatures, reaction finishes the back mud-water separation, finishes the processing to nickel-containing waste water;
Wherein, described modified coal ash preparation method is mixed with mixed solution with the sodium hydroxide solution of flyash and 2mol/L by 1: 6 solid-to-liquid ratio, 85 ℃ of following microwave reactions 20 minutes, then 100 ℃ of following stirring reactions 12 hours, after finishing, reaction cleans with washed with de-ionized water, 95% ethanol, use 1mol/L sodium-chlor saturated then, 110 ℃ of oven dry down, obtain modified coal ash at last.
The beneficial effect of the invention: the present invention utilizes physics and chemofacies bonded method that flyash is carried out modification and handles, microwave method not only plays the effect of crystal seed, and has shortened the time of subsequent chemistry modification greatly, has improved its specific surface area, effective, cost is low.Utilize modified coal ash of the present invention that the nickel-containing waste water of concentration about for 200mg/L removed, test shows that removal effect is remarkable.The treatment of wastes with processes of wastes against one another of the present invention, and can recycle nickel ion by desorption, both can reuse flyash and also avoid the generation secondary pollution, meet the theory of recycling economy.
Embodiment
Below by embodiment the present invention is described in further detail, a kind of method of utilizing modified coal ash to handle nickel-containing waste water, the steps include: in every liter of nickel-containing waste water, to add 5 gram modified coal ashs, ash, water are fully mixed, the 24h of concussion reaction at normal temperatures, reaction finishes the back mud-water separation, finishes the processing to nickel-containing waste water;
Wherein, described modified coal ash preparation method is mixed with mixed solution with the sodium hydroxide solution of flyash and 2mol/L by 1: 6 solid-to-liquid ratio, 85 ℃ of following microwave reactions 20 minutes, then 100 ℃ of following stirring reactions 12 hours, after finishing, reaction cleans with washed with de-ionized water, 95% ethanol, use 1mol/L sodium-chlor saturated then, 110 ℃ of oven dry down, obtain modified coal ash at last.
Embodiment
Adopt the present invention that the flyash of pit hole mouth power plant is carried out modification, then the specific surface area of the flyash before and after the modification is measured, the results are shown in Table 1.Many times have been increased by the flyash specific surface area after the visible modification of table 1.
Specific surface area contrast before and after the modification of table 1 pit hole mouth fly ash in electric power plant
After utilizing the modification of pit hole mouth power plant flyash is handled nickel-containing waste water, waste strength is 216mg/L, and every liter of waste water of dosage 5 grams, 20 ° of C of room temperature fully mix 24h, and processed waste water nickel content is 0.528mg/L, and clearance reaches 99.8%.Make waste water reach country's " integrated wastewater discharge standard " (GB8978-1996) in to the emission request of nickel (＜1mg/l).
Described content only is the basic explanation of the present invention under conceiving, and according to any equivalent transformation that technical scheme of the present invention is done, all should belong to protection scope of the present invention.
Claims (1)
1. method of utilizing modified coal ash to handle nickel-containing waste water, the steps include: in every liter of nickel-containing waste water, to add 5 gram modified coal ashs, ash, water are fully mixed, the 24h of concussion reaction at normal temperatures, reaction finishes the back mud-water separation, finishes the processing to nickel-containing waste water;
Wherein, described modified coal ash preparation method is mixed with mixed solution with the sodium hydroxide solution of flyash and 2mol/L by 1: 6 solid-to-liquid ratio, 85 ℃ of following microwave reactions 20 minutes, then 100 ℃ of following stirring reactions 12 hours, after finishing, reaction cleans with washed with de-ionized water, 95% ethanol, use 1mol/L sodium-chlor saturated then, 110 ℃ of oven dry down, obtain modified coal ash at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102043985A CN101428872B (en) | 2008-12-11 | 2008-12-11 | Process for treating nickel-containing wastewater with modified coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102043985A CN101428872B (en) | 2008-12-11 | 2008-12-11 | Process for treating nickel-containing wastewater with modified coal ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101428872A true CN101428872A (en) | 2009-05-13 |
| CN101428872B CN101428872B (en) | 2011-01-12 |
Family
ID=40644551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102043985A Expired - Fee Related CN101428872B (en) | 2008-12-11 | 2008-12-11 | Process for treating nickel-containing wastewater with modified coal ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101428872B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353411A (en) * | 2014-11-19 | 2015-02-18 | 上海电力学院 | Preparation method of water treatment strong adsorbent |
| CN106241939A (en) * | 2016-09-06 | 2016-12-21 | 湖北平安电工材料有限公司 | Modified coal ash removes the method for industry COD in organic siliconresin waste water |
| CN106475080A (en) * | 2016-10-27 | 2017-03-08 | 重庆大学 | A kind of anthracite method of modifying and application |
-
2008
- 2008-12-11 CN CN2008102043985A patent/CN101428872B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353411A (en) * | 2014-11-19 | 2015-02-18 | 上海电力学院 | Preparation method of water treatment strong adsorbent |
| CN106241939A (en) * | 2016-09-06 | 2016-12-21 | 湖北平安电工材料有限公司 | Modified coal ash removes the method for industry COD in organic siliconresin waste water |
| CN106475080A (en) * | 2016-10-27 | 2017-03-08 | 重庆大学 | A kind of anthracite method of modifying and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101428872B (en) | 2011-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101829545B (en) | Heavy metal biological adsorbent using eggshell membrane as matrix and preparation method thereof | |
| CN106345411B (en) | A kind of active sludge carbon based on rare metal and the application in terms of sulphur removal ammonia phosphorus | |
| CN101428983B (en) | Method for modification treatment of coal ash | |
| CN103286116A (en) | Harmless treatment method of electrolytic manganese residue | |
| CN102689922A (en) | Lead compound nano-powder preparation method for recovery and manufacture of lead-acid battery | |
| CN109046229B (en) | Lanthanum hydroxide modified hydroxyapatite material and preparation method and application thereof | |
| CN102689923A (en) | Preparation method of lead-acid battery PbO nano-powder | |
| CN103386294B (en) | A preparation method for a coal gangue-based composite adsorbent capable of removing mercury in waste water | |
| CN109719118A (en) | A kind of aluminium cell solid waste recycling treatment system and method | |
| CN102671634B (en) | Modified cellulose adsorbent and preparation method as well as application thereof | |
| CN101428872B (en) | Process for treating nickel-containing wastewater with modified coal ash | |
| CN104525137A (en) | Defluorination biological adsorbent made by tea residue modification, preparation method and application thereof | |
| CN106902787A (en) | A kind of preparation method of the compound lithium battery Absorbent of egg shell waste material/activated carbon | |
| CN109111974A (en) | A kind of deashing method of biomass | |
| CN105688929A (en) | Neutral advanced oxidation catalyst with pelelith as carrier and preparing method of neutral advanced oxidation catalyst | |
| CN105944688B (en) | A kind of preparation method and heavy metal in waste water minimizing technology of modified pineapple peel magnetic adsorptive material | |
| CN108772038B (en) | Adsorbent for removing lead ions in water and preparation method and application thereof | |
| CN107552015B (en) | Modified mangosteen shell and method for reducing vanadium in water body by using same | |
| CN102872818A (en) | Composite adsorbing material for removing zinc ions in natural water and preparation method thereof | |
| CN108258260A (en) | A kind of synthetical recovery reuse method of waste zinc manganese dry battery | |
| CN102117919B (en) | Method for recycling mercury from waste neutral zinc-manganese dioxide battery | |
| CN105836917A (en) | A method of removing ammonia nitrogen from an aged percolate by utilizing a pyrolysis cyclic stone guano process | |
| CN104577248A (en) | Lithium battery positive electrode material recovery method | |
| CN212292842U (en) | Integrated system for directly preparing mercury oxide from mercury-containing organic sludge | |
| CN109759004A (en) | A method of adsorbent material is prepared using manganese slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chengdu Raise Environmental Protection Technology Co., Ltd. Assignor: Shanghai University of Electric Power Contract record no.: 2011510000171 Denomination of invention: Process for treating nickel-containing wastewater with modified coal ash Granted publication date: 20110112 License type: Exclusive License Open date: 20090513 Record date: 20110819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |