CN109422331A - A kind of power plant desulfurization wastewater gradient centrifugation processing method - Google Patents
A kind of power plant desulfurization wastewater gradient centrifugation processing method Download PDFInfo
- Publication number
- CN109422331A CN109422331A CN201710783366.4A CN201710783366A CN109422331A CN 109422331 A CN109422331 A CN 109422331A CN 201710783366 A CN201710783366 A CN 201710783366A CN 109422331 A CN109422331 A CN 109422331A
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- CN
- China
- Prior art keywords
- water
- vibration membrane
- ultrafiltration
- desulfurization wastewater
- production
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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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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention belongs to desulfurization wastewater processing technology field, specific design cycle ultrafiltration membrane and vibration membrane processing method and system.The present invention includes the following steps: that desulfurization wastewater 1) is carried out clarifying basin pretreatment；2) pretreatment is produced into water progress loop ultrafiltration and obtains ultrafiltration production water；3) ultrafiltration is produced into the vibration membrane concentrated water and vibration membrane production water that water carries out vibration membrane filtering；4) vibration membrane concentrated water is this system condensed water, into subsequent Zero discharging system；5) vibration membrane produces water reuse to production.Producing water water quality of the present invention meets desulfurizing tower of electric power plant quality of reused water requirement, and the water of concentrated water is only the 35% of raw water amount, can be completely used for boiler bottom slag sprinkling, realize wastewater zero discharge.
Description
Technical field
The invention belongs to desulfurization wastewater processing technology field, specific design cycle ultrafiltration membrane and vibration and are at membrane processing method
System.
Background technique
Coal-burning power plant is the column support type industry in China's modernization economic construction, can meet social groups to the full extent
Daily life electricity consumption supply requirement, pull growth of the national economic on play an important role.In sustainable development idea
Under, energy saving policy is constantly promoted, and the environmental consciousness of social groups is also constantly promoted, and government department pays much attention to the de- of coal-burning power plant
Sulphur discharge of wastewater problem should actively optimize at Desulphurization for Coal-fired Power Plant wastewater zero discharge to further strengthen ecological environmental protection
Science and engineering skill improves the ecological benefits and economic benefit of coal-burning power plant comprehensively.
Existing desulfuration waste water treatment process generally comprises neutralization, precipitating, coagulation, final neutralization and slurry dewatering processing etc.
Softening pretreatment (by desulfurization wastewater dosing coagulation clarification, removes most of hardness, basicity and suspended matter；Softening water outlet enters
Filtration system further removes oil removal；The body refuse that chemical reaction generates enters dewatering system desliming), film concentration is (with each
The film of seed type carries out concentration, obtains concentrate with high salt) and evaporating, concentrating and crystallizing processing, concentrate after crystallization with
Crystal grain is separated by solid-liquid separation, and mother liquor returns to stoste pool or continues evaporative crystallization, and crystal is dehydrated, and is finally obtained net
Change water and carnallite.
Have the following disadvantages: that (1) carries out dosing softening in pretreatment stage, sodium carbonate dosage is very big, operating cost
It is very high；(2) desulfurization wastewater has the characteristics that salt content height, complicated component, hardness are high, while being steamed using costly tradition
Hair crystallization technique of zero discharge finally generates solid carnallite, and carnallite complicated component can not recycle, and can only handle as dangerous waste.
Summary of the invention:
Therefore, it is an object of the invention to solve in the prior art to desulfurization wastewater carry out pretreatment and evaporative crystallization processing cause
Reagent cost it is excessively high, and be unable to fully cause processing cost to increase using the impurity product in desulfurization wastewater treatment process,
To reach resource and the economic dual defect considered, and then provide a kind of membrane processing method of desulfurization wastewater concentration decrement
And system.
The technical solution adopted by the present invention are as follows:
A kind of membrane processing method of desulfurization wastewater concentration decrement, includes the following steps:
1) desulfurization wastewater is subjected to clarifying basin pretreatment；
2) pretreatment is produced into water progress loop ultrafiltration and obtains ultrafiltration production water；
3) ultrafiltration is produced into the vibration membrane concentrated water and vibration membrane production water that water carries out vibration membrane filtering；
4) vibration membrane concentrated water is this system condensed water, into subsequent Zero discharging system；
5) vibration membrane produces water reuse to production.
The parameter of the loop ultrafiltration are as follows: operating pressure 0.38MPa, flux 186LMH.
The parameter of vibration membrane are as follows: operating pressure 4.5MPa, flux 100LMH, vibration frequency are 48 ~ 50HZ.
Realize the device of the membrane processing method of above-mentioned desulfurization wastewater concentration decrement, including loop ultrafiltration device, vibration membrane
Device, cleaning device；
The beneficial effects of the present invention are:
1) membrane processing method of this system uses less process equipment, reduces investment cost and operating cost, also saves
Land area.
2) system can also be achieved fully automatic operation, and operation operation is easy.
3) wastewater flow rate (concentrate) of subsequent evaporation processing is effectively reduced, greatly reduces energy consumption, economic benefit and
Social benefit is huge.
Detailed description of the invention
Fig. 1 is the process flow chart of the membrane processing method of desulfurization wastewater concentration decrement in example.
Specific embodiment
There is provided following examples is to preferably further understand the present invention, it is not limited to the preferred forms,
The contents of the present invention and protection scope are not construed as limiting, anyone shows under the inspiration of the present invention or by the present invention with other
Any product identical or similar with the present invention for having the feature of technology to be combined and obtaining, all falls within protection of the invention
Within the scope of.
Specific experiment step or condition person are not specified in example, according to the literature in the art described routine experiment step
Rapid operation or condition can carry out.Reagents or instruments used without specified manufacturer is conventional reagent product.
Example 1 carries out the film process of desulfurization wastewater concentration decrement according to process flow chart in Fig. 1, the specific steps are as follows:
1) it by desulfurization wastewater after clarifying basin pre-processes, is passed through loop ultrafiltration and is filtered, the rate of recovery of loop ultrafiltration is
100%。
2) loop ultrafiltration is obtained by step 1) and produce water by vibration membrane, be concentrated, the rate of recovery 65%, obtain 65% and produce
Water reuse obtains 35% condensed water and enters spray slag system.
The desulfurization wastewater rate of recovery is 65% in this example.
Desalinization wastewater water quality indicator such as the following table 1 before and after the processing in example
Water quality indicator contrast table before and after the film process that table 1, desulfurization wastewater concentration are reduced
Producing water water quality meets desulfurizing tower of electric power plant quality of reused water requirement, and the water of concentrated water is only the 35% of raw water amount, can all use
It is sprayed in boiler bottom slag, realizes wastewater zero discharge.
Examples detailed above is only intended to clearly illustrate example, and does not limit the embodiments.For affiliated
For the those of ordinary skill in field, other different forms of changes or modifications may be made based on the above description.
There is no need and unable to illustrate to all embodiments.And thus changes and variations that derived from are still
Protection scope in the invention.
Claims (3)
1. a kind of power plant desulfurization wastewater gradient centrifugation handles processing method, it is characterised in that include the following steps:
Desulfurization wastewater is subjected to clarifying basin pretreatment；
Pretreatment is produced into water progress loop ultrafiltration and obtains ultrafiltration production water；
Ultrafiltration is produced into the vibration membrane concentrated water and vibration membrane production water that water carries out vibration membrane filtering；
Vibration membrane concentrated water is this system condensed water, into subsequent Zero discharging system；
Vibration membrane produces water reuse to production.
2. loop ultrafiltration described in claim 1, it is characterised in that parameter are as follows: operating pressure 0.38MPa, flux 186LMH.
3. vibration membrane described in claim 1, it is characterised in that parameter are as follows: operating pressure 4.5MPa, flux 100LMH, shake
Dynamic frequency is 48 ~ 50HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783366.4A CN109422331A (en) | 2017-09-04 | 2017-09-04 | A kind of power plant desulfurization wastewater gradient centrifugation processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783366.4A CN109422331A (en) | 2017-09-04 | 2017-09-04 | A kind of power plant desulfurization wastewater gradient centrifugation processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109422331A true CN109422331A (en) | 2019-03-05 |
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ID=65512756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710783366.4A Pending CN109422331A (en) | 2017-09-04 | 2017-09-04 | A kind of power plant desulfurization wastewater gradient centrifugation processing method |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039433A (en) * | 2019-12-13 | 2020-04-21 | 浙江天地环保科技有限公司 | System and method for treating ship tail gas desulfurization washing wastewater |
-
2017
- 2017-09-04 CN CN201710783366.4A patent/CN109422331A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039433A (en) * | 2019-12-13 | 2020-04-21 | 浙江天地环保科技有限公司 | System and method for treating ship tail gas desulfurization washing wastewater |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190305 |