CN102515465A - Composite flocculation dehydration conditioner prepared from coal ash - Google Patents
Composite flocculation dehydration conditioner prepared from coal ash Download PDFInfo
- Publication number
- CN102515465A CN102515465A CN2012100041182A CN201210004118A CN102515465A CN 102515465 A CN102515465 A CN 102515465A CN 2012100041182 A CN2012100041182 A CN 2012100041182A CN 201210004118 A CN201210004118 A CN 201210004118A CN 102515465 A CN102515465 A CN 102515465A
- Authority
- CN
- China
- Prior art keywords
- coal ash
- composite flocculation
- coal
- flyash
- composite
- 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
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the field of recycling of industrial solid waste coal ash, and mainly relates to a method for preparing a composite flocculation dehydration conditioner by using waste coal ash which is produced after coal in a power plant is combusted. The prepared composite flocculation dehydration conditioner consists of the following components in percentage by mass: 54 to 66 percent of filtrate prepared from coal ash, 21 to 26 percent of industrial pure Al2(SO4)3, and 13 to 20 percent of industrial pure MgSO4. The coal ash is industrial waste residues which are removed by a coal-fired boiler in a thermal power plant; and the coal ash comprises silica and aluminum trioxide which are used as main components, ferrum, calcium, magnesium, potassium, and sodium oxides, parts of carbon particles, and trace elements. The elements of the coal ash are exactly the main components of a composite inorganic polymer sludge dehydrating agent. Therefore, the high-efficiency and environment-friendly composite sludge dehydrating agent can be synthesized by using the usable elements in the coal ash and is used for treating sludge, and the coal ash can be used effectively, so that the aim of treatment of wastes with processes of wastes against one another can be fulfilled, and good economic benefit can be obtained.
Description
Technical field
Patent of the present invention belongs to the recycling field of industrial solid castoff flyash, relate generally to utilize power plant's coal combustion after waste flyash prepare the method for composite flocculation dehydrating and conditioning agent.
Background technology
The intensification of Along with people's environmental pollution control understanding, sewage work continues mutually and puts into operation in each main cities.Meanwhile; In sewage treatment process, will inevitably produce a large amount of mud, its quantity accounts for 0.3%～0.5% (in the water ratio 97%) of handling the water yield; The expense that is used to handle mud in whole construction costs of sewage work accounts for 20%～50%, even up to 70%.So sludge treatment is the important component part of Sewage treatment systems, must fully pay attention to.Sludge dewatering is the most difficult ring of sludge treatment, and bulky mud is made troubles to its outward transport, has improved the processing costs of mud greatly.Mud is through concentrating, still have an appointment after the digestion 95%～97% water cut, and volume is still very big, in order to fully utilize and ultimate disposal, needs make processed to mud, makes the physicals of liquid mud change over semi-solid state.The ideal dehydration should be to remove water to greatest extent, and the solid particulate of while mud then should be retained on the mud cake after the dehydration as far as possible, and the expense that requires this operation to spend is minimum.And sludge dehydrating agent can produce effect preferably under condition with low cost, and Given this, the present invention is the preparation that main raw material carries out the agent of a kind of efficient composite flocculation dehydrating and conditioning with this waste of flyash.
Flyash is a kind of industrial residue that the fuel-burning power plant coal firing boiler is got rid of.If arbitrarily discharging pollutes the environment, cause the wasting of resources.Along with the development and utilization of every profession and trade to flyash, the utilization of coal ash rate is increasingly high, and flyash " is turned waste into wealth ", needs the present condition for application of analysis and research flyash, finds out the problem of present existence, promotes the Sustainable development of flyash.The staple of flyash is silicon-dioxide and alchlor, and the oxide compound and the part carbon granules of other iron calcium magnesium potassium sodium etc. also have trace element simultaneously.These elements exactly also are the major ingredient of composite type inorganic polymer sludge dehydrating agent.Therefore utilize the composite sludge dehydration agent of these units capable of using synthesizing efficient, the environmental protection usually in the flyash, be used to handle mud, flyash is utilized effectively, thereby reaches the purpose of " treatment of wastes with processes of wastes against one another ", obtain good economic benefit.
Summary of the invention
In order to reduce the cost of sludge dehydrating agent, the protection environment the invention provides a kind of flyash that utilizes and is composite flocculation dehydrating and conditioning agent of main raw material preparation and preparation method thereof.
A kind of industrial residue flyash of getting rid of with the fuel-burning power plant coal firing boiler is raw material, the agent of preparation composite flocculation dehydrating and conditioning.After flyash sieved, mix a small amount of solubility promoter, add certain density NaOH solution; In the water bath with thermostatic control vibrator, react for some time, filtered while hot, and filtrating put into four neck flasks; Heating in water bath, agitator slowly drips the vitriol oil with long neck funnel and is slightly acidic to pH; Behind the room temperature cure certain hour, dropwise splash into a certain amount of Al
2(SO
4)
3And MgSO
4Solution.Mix the back and use alkali lye regulation system pH value to be strongly-acid, under constant temperature, stir certain hour, at room temperature slaking 24h promptly gets this composite flocculation dehydrating and conditioning agent.
Embodiment
Embodiment one:
A kind of industrial residue flyash of getting rid of with the fuel-burning power plant coal firing boiler is raw material, the agent of preparation composite flocculation dehydrating and conditioning.After flyash crossed 200 mesh sieves, mix a small amount of solubility promoter, add the NaOH solution of 1.4mol/L; In 50 ℃ of water bath with thermostatic control vibrators, react 26h, filtered while hot, and filtrating put into four neck flasks; Water bath heating temperature is adjusted to 75 ℃, and agitator slowly drips the vitriol oil to pH=5.5 with long neck funnel; Behind room temperature cure 24h, dropwise splash into a certain amount of Al
2(SO
4)
3And MgSO
4Solution.Mixing back use alkali lye regulation system pH value is 2.5, under constant temperature, stirs 1h, and at room temperature slaking 24h promptly gets this composite flocculation dehydrating and conditioning agent.
Composite flocculation dehydrating and conditioning of the present invention agent is to be processed by the raw material of following mass percent:
| Flyash filtrating | Al 2(SO 4) 3 | MgSO 4 |
| 54％ | 26％ | 20％ |
Use it for the preceding conditioning of domestic sludge dehydration, the primary sludge resistivity is 30.5 * 10
8s
2/ g belongs to difficult dewatered sludge, and handling back mud resistivity is 3.05 * 10
8s
2/ g becomes easy dewatered sludge.
Embodiment two:
A kind of industrial residue flyash of getting rid of with the fuel-burning power plant coal firing boiler is raw material, the agent of preparation composite flocculation dehydrating and conditioning.After flyash crossed 200 mesh sieves, mix a small amount of solubility promoter, add the NaOH solution of 1.6mol/L; In 60 ℃ of water bath with thermostatic control vibrators, react 30h, filtered while hot, and filtrating put into four neck flasks; Water bath heating temperature is adjusted to 80 ℃, and agitator slowly drips the vitriol oil to pH=6.0 with long neck funnel; Behind room temperature cure 22h, dropwise splash into a certain amount of Al
2(SO
4)
3And MgSO
4Solution.Mixing back use alkali lye regulation system pH value is 3.0, under constant temperature, stirs 1.5h, and at room temperature slaking 24h promptly gets this composite flocculation dehydrating and conditioning agent.
Composite flocculation dehydrating and conditioning of the present invention agent is to be processed by the raw material of following mass percent:
| Flyash filtrating | Al 2(SO 4) 3 | MgSO 4 |
| 60％ | 23％ | 17％ |
Use it for the preceding conditioning of domestic sludge dehydration, the primary sludge resistivity is 30.5 * 10
8s
2/ g belongs to difficult dewatered sludge, and handling back mud resistivity is 3.28 * 10
8s
2/ g becomes easy dewatered sludge.
Embodiment three:
A kind of industrial residue flyash of getting rid of with the fuel-burning power plant coal firing boiler is raw material, the agent of preparation composite flocculation dehydrating and conditioning.After flyash crossed 200 mesh sieves, after flyash sieved, mix a small amount of solubility promoter; Add the NaOH solution of 1.8mol/L, in 70 ℃ of water bath with thermostatic control vibrators, react 34h, filtered while hot; And filtrating put into four neck flasks, water bath heating temperature is adjusted to 85 ℃, agitator; Slowly drip the vitriol oil to pH=6.5 with long neck funnel, behind room temperature cure 20h, dropwise splash into a certain amount of Al
2(SO
4)
3And MgSO
4Solution.Mixing back use alkali lye regulation system pH value is 3.5, under constant temperature, stirs 2.0h, and at room temperature slaking 24h promptly gets this composite flocculation dehydrating and conditioning agent.
Composite flocculation dehydrating and conditioning of the present invention agent is to be processed by the raw material of following mass percent:
| Flyash filtrating | Al 2(SO 4) 3 | MgSO 4 |
| 66％ | 21％ | 13％ |
Use it for the preceding conditioning of domestic sludge dehydration, the primary sludge resistivity is 30.5 * 10
8s
2/ g belongs to difficult dewatered sludge, and handling back mud resistivity is 3.51 * 10
8s
2/ g becomes easy dewatered sludge.
Claims (1)
1. one kind is the composite flocculation dehydrating and conditioning agent of feedstock production with industrial solid wastes flyash, it is characterized in that, by mass percentage, by the filtrating 54%-66% that flyash makes, industrial pure Al
2(SO
4)
321%-26%, technical pure MgSO
413%-20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210004118.2A CN102515465B (en) | 2012-01-09 | 2012-01-09 | Composite flocculation dehydration conditioner prepared from coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210004118.2A CN102515465B (en) | 2012-01-09 | 2012-01-09 | Composite flocculation dehydration conditioner prepared from coal ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102515465A true CN102515465A (en) | 2012-06-27 |
| CN102515465B CN102515465B (en) | 2014-07-16 |
Family
ID=46286616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210004118.2A Expired - Fee Related CN102515465B (en) | 2012-01-09 | 2012-01-09 | Composite flocculation dehydration conditioner prepared from coal ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102515465B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439535A (en) * | 2015-11-09 | 2016-03-30 | 四川环奥污泥处置技术有限公司 | Physical and chemical property conditioner for dried/semidried sludge and application method of physical and chemical property conditioner |
| RU2660871C1 (en) * | 2017-05-15 | 2018-07-10 | Федор Иванович Лобанов | Method of disposal of sludge domestic wastewater |
-
2012
- 2012-01-09 CN CN201210004118.2A patent/CN102515465B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 刘臻等: "粉煤灰制备絮凝剂的研究", 《粉煤灰综合利用》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439535A (en) * | 2015-11-09 | 2016-03-30 | 四川环奥污泥处置技术有限公司 | Physical and chemical property conditioner for dried/semidried sludge and application method of physical and chemical property conditioner |
| CN105439535B (en) * | 2015-11-09 | 2018-04-03 | 四川环奥污泥处置技术有限公司 | Desiccation/semi-oriented sludge physicochemical property conditioner, application process |
| RU2660871C1 (en) * | 2017-05-15 | 2018-07-10 | Федор Иванович Лобанов | Method of disposal of sludge domestic wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102515465B (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101913785B (en) | Incineration fly ash cement kiln synergic processing process | |
| CN113479920B (en) | Aluminum ash resource utilization method | |
| CN101279825B (en) | Method for cooperative reclaiming flyash and sludge in refuse incineration | |
| CN102188953A (en) | Modified coal ash used for treating ammonia nitrogen waste water and preparation method thereof | |
| CN113245342B (en) | Resource treatment method and treatment system for waste incineration fly ash water washing salt making based on seed crystal method | |
| CN106866006B (en) | Organic wastewater collaboration Industrial Solid Waste prepares the system and method for sulphate aluminium cement | |
| CN104562180A (en) | Method for preparing calcium sulfate whisker from phosphogypsum | |
| CN103896505A (en) | Method for adjusting and controlling feeding mode of lime-dried municipal sludge cooperatively treated with cement kiln | |
| CN105923646A (en) | Resource comprehensive utilization for salty mud | |
| CN102659372B (en) | Light building material manufactured through waste incineration ash and manufacturing method | |
| CN104724897A (en) | Sludge dewatering conditioning agent and use method thereof | |
| CN104726713A (en) | Process for comprehensive recovery of metal-containing oxides in disabled SCR (selective catalytic reduction) denitration catalyst | |
| CN101585522B (en) | Method for recovering phosphorus from urban mud anaerobic digestion solution | |
| CN102515465B (en) | Composite flocculation dehydration conditioner prepared from coal ash | |
| CN103232052B (en) | Method for preparing high-purity calcium carbonate directly from phosphogypsum | |
| CN103848882B (en) | A kind of turmeric saponin extracting method of non-waste-emission | |
| CN103482891B (en) | The cement that a kind of domestic garbage incineration flyash directly grinds and preparation method | |
| CN101096732B (en) | Magnesium and magnesium alloy resource circulatory utilization system | |
| CN212450661U (en) | Potassium extraction system based on biomass combustion fly ash | |
| CN113620670A (en) | System and method for preparing baking-free bricks and co-producing potassium chloride by using biomass power plant ash | |
| CN105540778A (en) | Polymeric aluminum ferric chloride flocculant preparation method | |
| CN104671295A (en) | Method for preparing polyaluminum ferric chloride water purifier | |
| CN109403416B (en) | Water balance system for recycling metal surface treatment waste | |
| CN102557387B (en) | Composite sludge flocculation and dehydration conditioner prepared from steel slag | |
| CN202643513U (en) | Energy saving and emission reduction disposal and resource integrated equipment for municipal and/or industrial sludge |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20160109 |