CN107376881A - A kind of modification of flyash for treatment of Power waste water and application method - Google Patents
A kind of modification of flyash for treatment of Power waste water and application method Download PDFInfo
- Publication number
- CN107376881A CN107376881A CN201710700647.9A CN201710700647A CN107376881A CN 107376881 A CN107376881 A CN 107376881A CN 201710700647 A CN201710700647 A CN 201710700647A CN 107376881 A CN107376881 A CN 107376881A
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- CN
- China
- Prior art keywords
- flyash
- coal ash
- modified coal
- minutes
- treatment
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
Abstract
The present invention relates to a kind of method of modifying of the flyash for treatment of Power waste water, it is as follows that the method comprising the steps of：(1) most suitable modifying agent is filtered out：On the basis of 1g flyash, the component that modifying agent includes has：Sodium chloride 0.1g；Concentration is 1mol/L sulfuric acid 0.3ml；Concentration is 1mol/L hydrochloric acid 0.3ml；(2) flyash is modified：After mixing flyash mixes 30 minutes at room temperature with modifying agent, filtering, after being rinsed repeatedly with deionized water, abundant electrothermal drying is carried out at 120 DEG C, grinds and modified coal ash is made；The application method of above-mentioned modified coal ash is including content：By above-mentioned modified coal ash in mass ratio, Fei Shui ﹕ modified coal ash is that 10 ﹕ 1 ratio is thoroughly mixed, and adsorption time is controlled at 45 minutes to 60 minutes.The modified flyash of the present invention has extremely strong adsorption capacity to power plant effluent, solves the defects of original activated carbon treatment of Power waste water cost is high, reaches the purpose of the treatment of wastes with processes of wastes against one another.
Description
Technical field
The invention belongs to waste water of heat-engine plant further treatment technique field, particularly a kind of fine coal for treatment of Power waste water
The modification of ash and application method.
Background technology
It is in existing deep treatment method to use activated carbon as adsorbent more, but activated carbon cost is higher, price per ton
Require high at 8000 yuan or so, and using rear regeneration techniques, and the industrial residue that flyash is larger as power plant's discharge capacity, its cost
Only at 30 yuan per ton or so, flyash is one of larger industrial residue of the current discharge capacity in China, and China's year bed drain purge has been at this stage
Up to 30,000,000 t.The processing of flyash and Utilizing question cause people widely to pay attention to, have gradually paid close attention to this money mislayed
Source.Flyash is rich in activating oxide SiO2And Al2O3Based on glass microballoon, and a small amount of metal oxide and uncombusted
Charcoal, specific surface area is big, and microcellular structure is more, has stronger adsorption capacity.Can not only using flyash advanced treatment of waste water
It is cost-effective, it can more reach the purpose of the treatment of wastes with processes of wastes against one another.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, to propose a kind of changing for flyash for treatment of Power waste water
Property and application method.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of method of modifying of flyash for treatment of Power waste water, it is as follows that the method comprising the steps of：
(1) most suitable modifying agent is filtered out：On the basis of 1g flyash, the component that modifying agent includes has：Sodium chloride 0.1g；
Concentration is 1mol/L sulfuric acid 0.3ml；Concentration is 1mol/L hydrochloric acid 0.3ml；
(2) flyash is modified：After mixing flyash mixes 30 minutes at room temperature with modifying agent, filter, use
After deionized water is rinsed repeatedly, abundant electrothermal drying is carried out at 120 DEG C, grinds and modified coal ash is made.
The application method of modified coal ash, the application method are including content made of a kind of method of modifying described above：
By above-mentioned modified coal ash in mass ratio, Fei Shui ﹕ modified coal ash is that 10 ﹕ 1 ratio is thoroughly mixed, adsorption time
Control was at 45 minutes to 60 minutes.
The advantages and positive effects of the present invention are：
1st, the present invention is modified using the cheap flyash of cost, and modified flyash has extremely strong to power plant effluent
Adsorption capacity, solve the defects of original activated carbon treatment of Power waste water cost is high.
2nd, present invention process is simple, is easy to grasp, and not only solves the process problem of power plant effluent, while also solves electricity
The process problem of factory's flyash, reach the purpose of the treatment of wastes with processes of wastes against one another.
Brief description of the drawings
Fig. 1 is Langmuir isotherm formulas linear relationship proof diagram in the inventive method；
Fig. 2 is Freundlich isotherm formulas linear relationship proof diagram in the inventive method.
Embodiment
Present example is further described below：It is emphasized that embodiment of the present invention is illustrative
, rather than it is limited, therefore the present invention is not limited to the embodiment described in embodiment, it is every by this area skill
The other embodiment that art personnel's technique according to the invention scheme is drawn, also belongs to the scope of protection of the invention.
A kind of method of modifying of flyash for treatment of Power waste water, it is as follows that the method comprising the steps of：
(1) flyash is modified, in flyash containing the more stable silica of a large amount of performances and aluminum oxide etc. into
Point, its absorption property can not be played preferably, it is necessary to carried out the modification of surface or structure to it, made increased activity, by increasing calcium
The comparison of adsorption under the different modified conditions such as roasting, modified, the sulfuric acid modified, hydrochloric Acid Modification of alkali lye,
1. filter out most suitable modifying agent：On the basis of 1g flyash, the component that modifying agent includes has：
Sodium chloride 0.1g；Concentration is 1mol/L sulfuric acid 0.3ml；Concentration is 1mol/L hydrochloric acid 0.3ml；
2. method of modifying：After mixing flyash mixes 30 minutes at room temperature with modifying agent, filtering is anti-with deionized water
After multiple flushing, abundant electrothermal drying is carried out at 120 DEG C, grinds and sour modified coal ash is made；
Mechanism is explained：Hydrochloric acid coordinates the combined modified adsorption that can improve modified coal ash of sulfuric acid bisgallic acid, and modified
The Si-Al keys that process addition NaCl energy hydrotropies are destroyed in flyash, so as to improve adsorption.
A kind of application method that modified coal ash is made using above-mentioned method of modifying, this method are including content：Will be above-mentioned
In mass ratio, Fei Shui ﹕ modified coal ash is that 10 ﹕ 1 ratio is thoroughly mixed to modified coal ash, and adsorption time is 45 points
Clock was to 60 minutes.
Using the optimal modified coal ash of gained, adsorption development test is carried out, adsorption time is set, throws the experiment such as ash quantity
Variable, show that optimal adsorption condition is by orthogonal test：The optimal adsorption time is 45 minutes to 60 minutes, and most suitable throwing ash quantity is
Per 100ml waste water 10g or so, pass through the calculation formula of adsorption equilibrium quantity：
In formula：Q --- the material mass that the adsorbent of Powder ash adsorption amount, i.e. unit mass is adsorbed, mg/g
V --- sewage volume, L
C0, Ce --- raw water and pollutant concentration during adsorption equilibrium in sewage, mg/L before respectively adsorbing
X --- absorbate quality, mg
M--- flyash dosages, g
Table one：Adsorption isotherm data logger
Equilibrium adsorption capacity qe is mapped with corresponding equilibrium concentration Ce, obtains adsorption isotherm.
1/Ce is mapped with 1/qe, as shown in Figure 1：
Lg Ce are mapped with lg qe, as shown in Figure 2：
Calculate adsorption equilibrium quantity and make adsorption equilibrium thermoisopleth, can be obtained by chart：At the absorption property of flyash
The waste water managed after biochemical treatment is feasible and efficient.
By water sample and flyash V/m (ml/g)=10：1 ratio is mixed, 30 points of the water bath with thermostatic control concussion at 30 DEG C
More than clock, take supernatant to be filtered after sufficient standing, utilize the water sample COD value after Digestion adsorption filtration, meter
Clearance is calculated, experimental result is shown in Table two：
Table two, modified coal ash result
Claims (2)
1. the method for modifying of a kind of flyash for treatment of Power waste water, it is characterised in that it is as follows that the method comprising the steps of：
(1) most suitable modifying agent is filtered out：On the basis of 1g flyash, the component that modifying agent includes has：Sodium chloride 0.1g；Concentration
For 1mol/L sulfuric acid 0.3ml；Concentration is 1mol/L hydrochloric acid 0.3ml；
(2) flyash is modified：After mixing flyash and modifying agent mix 30 minutes at room temperature, filtering, spend from
After sub- water rinses repeatedly, abundant electrothermal drying is carried out at 120 DEG C, grinds and modified coal ash is made.
2. the application method of modified coal ash made of method of modifying described in a kind of claim 1, it is characterised in that the user
Method is including content：By above-mentioned modified coal ash in mass ratio, Fei Shui ﹕ modified coal ash is that 10 ﹕ 1 ratio is sufficiently stirred
Mixing, adsorption time are controlled at 45 minutes to 60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700647.9A CN107376881A (en) | 2017-08-16 | 2017-08-16 | A kind of modification of flyash for treatment of Power waste water and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700647.9A CN107376881A (en) | 2017-08-16 | 2017-08-16 | A kind of modification of flyash for treatment of Power waste water and application method |
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| CN107376881A true CN107376881A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710700647.9A Pending CN107376881A (en) | 2017-08-16 | 2017-08-16 | A kind of modification of flyash for treatment of Power waste water and application method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110773114A (en) * | 2019-10-23 | 2020-02-11 | 华北电力大学（保定） | Preparation method of modified fly ash adsorbent for VOCs (volatile organic chemicals) |
| CN112340824A (en) * | 2020-10-28 | 2021-02-09 | 贵州中车绿色环保有限公司 | Preparation method of modified fly ash and application of modified fly ash in COD (chemical oxygen demand) removal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62254836A (en) * | 1986-04-30 | 1987-11-06 | Taguchi Kenkyusho:Kk | Absorbent for metallic ion and odor |
| CN101306849A (en) * | 2008-07-03 | 2008-11-19 | 山东轻工业学院 | Modification process of fly ash zeolite and wastewater treatment process for paper making |
| CN102219458A (en) * | 2011-04-02 | 2011-10-19 | 河海大学 | Ecological concrete and preparation method thereof |
| CN106237977A (en) * | 2016-08-18 | 2016-12-21 | 国网天津市电力公司 | The preparation of modified coal ash and use for advanced treating refinery(waste) water |
-
2017
- 2017-08-16 CN CN201710700647.9A patent/CN107376881A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62254836A (en) * | 1986-04-30 | 1987-11-06 | Taguchi Kenkyusho:Kk | Absorbent for metallic ion and odor |
| CN101306849A (en) * | 2008-07-03 | 2008-11-19 | 山东轻工业学院 | Modification process of fly ash zeolite and wastewater treatment process for paper making |
| CN102219458A (en) * | 2011-04-02 | 2011-10-19 | 河海大学 | Ecological concrete and preparation method thereof |
| CN106237977A (en) * | 2016-08-18 | 2016-12-21 | 国网天津市电力公司 | The preparation of modified coal ash and use for advanced treating refinery(waste) water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110773114A (en) * | 2019-10-23 | 2020-02-11 | 华北电力大学（保定） | Preparation method of modified fly ash adsorbent for VOCs (volatile organic chemicals) |
| CN112340824A (en) * | 2020-10-28 | 2021-02-09 | 贵州中车绿色环保有限公司 | Preparation method of modified fly ash and application of modified fly ash in COD (chemical oxygen demand) removal |
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Application publication date: 20171124 |