CN206940612U - Desulfurization wastewater treatment system - Google Patents
Desulfurization wastewater treatment system Download PDFInfo
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- CN206940612U CN206940612U CN201720778703.6U CN201720778703U CN206940612U CN 206940612 U CN206940612 U CN 206940612U CN 201720778703 U CN201720778703 U CN 201720778703U CN 206940612 U CN206940612 U CN 206940612U
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- concentration basin
- reaction chamber
- clarification
- desulfurization wastewater
- wastewater treatment
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Abstract
A kind of desulfurization wastewater treatment system that the utility model is related to, it is characterised in that it includes the first reaction chamber（1）, the first flocculation tanks（2）, first clarification concentration basin（3）, plate and frame filter press（4）, the second reaction chamber（5）, the second flocculation tanks（6）, second clarification concentration basin（7）, water tank（8）And desulfurization reuse case（9）.The utility model desulfurization wastewater treatment system, which has, invests small, and energy consumption is low, and operating cost is low, medicament can market purchasing, equipment operation is simple, is not required to change the equipment such as filter membrane, has the advantages of larger flexibility.
Description
Technical field
It the utility model is related to a kind of desulfurization wastewater treatment system.
Background technology
When wet desulfurization system is run, because absorbent recycles, chlorion and Cd, Zn in absorption tower in slurries,
The heavy metals such as Pb can be progressively enriched with the operation of desulphurization system, and very big harm is produced to desulphurization system and surrounding enviroment.Chlorine
Ion concentration is too high to be caused equipment corrosion, influence desulfuration efficiency, the quality for influenceing desulfurated plaster, acceleration system fouling, influence
Sulfur removal technology etc..Heavy metal can cause heavy metal pollution outside with gypsum or efflux wastewater discharge system.
For wet desulfurizing process, chlorion and heavy metal are the factors that can not be ignored, and are even closed sometimes
Key and deciding factor.Therefore, it is that the enterprise for running wet desulfurization system must face that dechlorination processing is carried out to desulfurization wastewater
And urgent problem to be solved.
Current chloride and the heavy metal containing wastewater treatment state of the art and analysis：
First, chlorine-contained wastewater disposal status
（1）Chemical precipitation method
Generated and precipitated with Cl- using Ag+, Hg+, Cu+, lime etc., then by precipitation, filtering, remove Cl-.The precipitation method are general
All over having the characteristics that simple to operate, pollution is small, clearance is high, but it is cuprous easily aoxidize, effect is also bad, silver nitrate, mercuric nitrate
Price Deng precipitating reagent is higher, and the method reagent consumption amounts of ultrahigh concentration Ca (OH) 2 are high, and these methods are only limitted to laboratory substantially at present
Use.
（2）Ion-exchange-resin process
Chlorine-contained wastewater enters ion exchange column, and chlorion is by resin adsorption, low chloride wastewater discharge.Resin is through after a while
After absorption, then reach saturation state, the resin of adsorption saturation is passed through strippant, after desorbing after a while, resin adsorption
Chlorion desorption enter liquid after desorption, the resin after desorption enters next work period.Ion exchange resin exchange capacity is small,
It is easily saturated, regeneration liquid waste pollution environment, therefore is not particularly suited for the too high desulfurization wastewater of chloride ion content.Meanwhile desulfurization is given up
SO42- in water will also influence the removal efficiency of chlorion.
（3）Electroosmose process
Electrodialysis is using amberplex as dialyser, and using copper coin as anode, under applying direct current electric field effect, chlorion is past
Anode moves to form stannous chloride precipitation, thus realizes the removal of chlorion, can reach good chlorion removal effect.
But desulfurization wastewater chloride ion content is too high, the impurity such as organic matter is more, and film can be caused dirty stifled frequent, while electroosmose process water consume and electricity
Consume larger, it is necessary to consume metallic copper, cost is higher, is not suitable for using in the processing of desulfurization wastewater.
Wet desulfurization system waste water is usually that chlorion is handled using the method for " two films one steam " at present, but is invested
Greatly（Ten thousand yuan of 150-200 of ton water investment）, operating cost is higher（Operating cost is more than 120 yuan）, while produce a large amount of abraum salts need
Handle.
2nd, heavy metal treatment technology present situation
（1）Chemical precipitation method
Chemical precipitation method mainly by adding suitable precipitating reagent into waste water, make its in the range of optimal pH with again
Metal ion chemically reacts, and so as to generate material that is not soluble in water or being insoluble in water, recycles cohesion, absorption, filtering etc.
Chemical technology is handled sediment, and then the purpose of purification of heavy metal waste water.Because chemical precipitation method has processing
Technique is simple, treatment effect is preferable, low cost and other advantages, is currently the side being most widely used in heavy metal containing wastewater treatment technology
One of method.
（2）Oxidation-reduction method
Oxidation-reduction method mainly has this chemical property of a variety of valence states using same heavy metal ion, is closed by adding
Suitable oxidant or reducing agent heavy metal ion be transformed into toxicity it is smaller, beneficial to formed the sediment for being easy to be separated from water from
Sub- valence state.At present, oxidation-reduction method handling process is simple, technology maturation, operating cost are low, has for the waste water for handling high concentration
Certain advantage, it is mainly used in the preprocessing process of wastewater treatment, it is also necessary to coordinate follow-up processing could qualified discharge.
（3）Ion-exchange
Ion-exchange mainly ion-exchanger is added into waste water, by ion-exchanger it is self-contained freely from
It is sub to be swapped with pending metal ion to reach the purpose of heavy-metal ion removal.Conventional ion-exchanger have sun from
Sub-exchange resin, anion exchange resin, chelating resin, Humic Acid Resin and zeolite.Ion-exchange can not only remove useless
The metal ion of more difficult separation in water, and can selectivity recovery precious metal, and removal of heavy metal ions rate is higher.
Ion-exchange investment is larger, is generally used for the processing of the big waste water of electroplating wastewater, small scale toxicity at present.
（4）Electrolysis
Electrolysis is that the heavy metal in waste water is removed using the principle of electrochemistry, and after adding direct current, anode metal is by oxygen
Metal ion formation colloid soluble in water is melted into, on the one hand the metal ion in waste water is reduced into metal simple-substance in negative electrode, separately
On the one hand form hydroxide with hydroxyl caused by negative electrode and adsorbed by the hydroxide colloid of anode, so as to reach removal waste water
The purpose of middle metal ion.Treatment of Wastewater by Electrolysis effect is more stable, body refuse amount is few, it is easy to automate, can be simultaneously
Contents of many kinds of heavy metal ion go out so as to reclaim metal, but because the electric current of negative electrode not enough causes greatly negative electrode sedimentation rate small, therefore
Apply in general to handle the heavy metal wastewater thereby of high concentration.The shortcomings that other electrolysis maximum is that electrisity consumption is too big, and operating cost is high,
Side reaction is more, so current electrolysis method is not universal in heavy metal wastewater thereby is handled.
（5）Absorption method
Absorption method is that adsorbent is put into waste water, and part heavy metal ion can be adsorbed the avtive spot on agent surface rapidly
Absorption, unnecessary heavy metal ion can enter microcellular structure and be adsorbed by the avtive spot of inside, and final absorption and desorption reach flat
Weighing apparatus.Due to adsorbent limited sorption capacity, therefore it is used for handling low concentration heavy metal water.
（6）Membrane separation technique
Membrane separation technique is the new method of processing heavy metal-containing waste water developed in recent years, in the effect of ambient pressure
Under the waste water containing heavy metal is realized the separation of waste water by a kind of special pellicle, this technology does not change the change of heavy metal
Learn form.According to the species of film and the difference of motive force, membrane separation technique includes counter-infiltration, electrodialysis, ultrafiltration and liquid film separation
Deng.Although membrane separation technique has the advantages that efficient, energy-conservation, will not cause secondary pollution, membrane module designs are difficult, expense
It is higher, membrane flux is not high, film is easily contaminated and causes the lost of life, these drawbacks hinder the industrialization of membrane separation technique
Using.
The content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided one kind investment is small, and energy consumption is low, and operating cost is low, medicine
Agent can market purchasing, equipment operation is simple, is not required to change the equipment such as filter membrane, the desulfurization wastewater processing system with larger flexibility
System.
What the purpose of this utility model was realized in：
A kind of desulfurization wastewater treatment system, it is characterised in that it is dense including the first reaction chamber, the first flocculation tanks, the first clarification
Contracting pond, plate and frame filter press, the second reaction chamber, the second flocculation tanks, the second clarification concentration basin, water tank and desulfurization reuse case,
Desulfurization wastewater is flow in the first reaction chamber, and the product of the first reaction chamber enters the first flocculation tanks, the first flocculation tanks
Product enters the first clarification concentration basin, and the first underflow of the first clarification concentration basin enters plate and frame filter press, and plate and frame filter press produces
Filtrate and the first clarification concentration basin the first overflow it is common enter the second reaction chamber, the product of the second reaction chamber enters second and wadded a quilt with cotton
Solidifying case, the product of the second flocculation tanks enter the second clarification concentration basin, and it is anti-that the second the second underflow for clarifying concentration basin is back to first
Answer in case, the second overflow of the second clarification concentration basin enters water tank, and the product of water tank enters desulfurization reuse case.
The specification of first reaction chamber and the second reaction chamber is 2m × 3m × 3m.
The specification of first flocculation tanks and the second flocculation tanks is 4m × 3m × 3m.
The specification of first clarification concentration basin and the second clarification concentration basin is 16m × 5m × 3m.
One, the anticorrosive agitators of 4kw built in first reaction chamber and the second reaction chamber and pH meter one.
The anticorrosive low-speed agitators of the built-in 2.0kw of first flocculation tanks and the second flocculation tanks one.
4.5kw mud scrapers one and 11.0kw sludge pumps three built in first clarification concentration basin and the second clarification concentration basin
Platform.
First reaction chamber, the second reaction chamber, the first flocculation tanks, the second flocculation tanks, the first clarification concentration basin and the second clarification
The interior Fluorine-lined steel plate of concentration basin.
Compared with prior art, the beneficial effects of the utility model are：
Flue gas desulfurization waste-water has that suspension is high, and chlorine ion concentration is high, the features such as heavy metal ion complicated component, preferably uses
Materializing strategy technique based on flocculation sediment.The main purpose of processing be eliminate heavy metal caused by toxicity, reduce suspension
The chlorion accumulated in content, reduction system.Main process uses " flocculation sediment " technique.Needed for this construction waste water materializing strategy
The hydraulic detention time wanted is shorter, and the volume of sewage treatment structure is smaller, and total process water yield is few in addition, preferably using equipment at
Reason system.All reaction treatment structures are using the consersion unit of integration.Because the corrosivity of waste water is stronger, metal structure
Structures use anti-corrosion measure.
Therefore the utility model desulfurization wastewater treatment system is small with investing, and energy consumption is low, and operating cost is low, and medicament can market
Buying, equipment operation is simple, is not required to change the equipment such as filter membrane, has the advantages of larger flexibility.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model desulfurization wastewater treatment system.
Wherein：
First reaction chamber 1, the first flocculation tanks 2, first clarification concentration basin 3, plate and frame filter press 4, the second reaction chamber 5, second
Flocculation tanks 6, second clarify concentration basin 7, water tank 8, desulfurization reuse case 9.
Embodiment
Referring to Fig. 1, a kind of desulfurization wastewater treatment system that the utility model is related to, it wads a quilt with cotton including the first reaction chamber 1, first
Solidifying case 2, first clarifies concentration basin 3, plate and frame filter press 4, the second reaction chamber 5, the second flocculation tanks 6, second and clarifies concentration basin 7, goes out
Water tank 8 and desulfurization reuse case 9,
A kind of processing method of desulfurization wastewater treatment system is as follows：
Desulfurization wastewater is flow in the first reaction chamber 1, the top infeed antichlor and conditioning agent of the first reaction chamber 1, and first
The product of reaction chamber 1 enters the first flocculation tanks 2, and the top of the first flocculation tanks 2 feeds flocculant, and the product of the first flocculation tanks 2 enters
Enter the first clarification concentration basin 3, the first underflow of the first clarification concentration basin 3 enters plate and frame filter press 4, caused by plate and frame filter press 4
Filter cake and desulfurated plaster merging treatment, filtrate caused by plate and frame filter press 4 and the first overflow of the first clarification concentration basin 3 are entered jointly
Enter the second reaction chamber 5, the top of the second reaction chamber 5 feeds antichlor and conditioning agent, and the product of the second reaction chamber 5 enters second
Flocculation tanks 6, the sides of the second flocculation tanks 6 feed flocculant, and the products of the second flocculation tanks 6 enters the second clarification concentration basin 7, and second
Second underflow of clarification concentration basin 7 is back in the first reaction chamber 1, and the second overflow of the second clarification concentration basin 7 enters water tank
8, the product of water tank 8 enters desulfurization reuse case 9.
Wherein：
The specification of first reaction chamber 1 and the second reaction chamber 5 is 2m × 3m × 3m, the residence time：30min, the first reaction chamber 1
With Fluorine-lined steel plate in the second reaction chamber 5, and one, the anticorrosive agitators of built-in 4kw and pH meter one；
The specification of first flocculation tanks 2 and the second flocculation tanks 6 is 4m × 3m × 3m, the residence time：60min, the first flocculation tanks 2
With Fluorine-lined steel plate in the second flocculation tanks 6, and anticorrosive low-speed agitators of built-in 2.0kw one；
The specification that first clarification concentration basin 3 and second clarifies concentration basin 7 is 16m × 5m × 3m, the residence time：7h, first
Clarify concentration basin 3 and second and clarify Fluorine-lined steel plate in concentration basin 7, and built-in 4.5kw mud scrapers one and 11.0kw sludge
Pump three.
Water quality index according to reuse is influenceed in desulfurization wastewater is analyzed, and specific data are shown in Table 1.Can from analyze data
To find out, the main pollution factor of sample includes：Chlorion, sulfate radical, Cd, Zn, Pb, As etc..It is generally believed that chlorion exceedes
During 20g/L, desulfuration efficiency can be influenceed, highest must not exceed 30g/L.When the water sample is continuing with, chlorion may proceed to accumulate, directly
To the operating of the system of influence.The presence of heavy metal ion can cause potential environment to influence.
The sample water quality situation of table 1
| Project | Water inlet | Unit |
| Total suspended matter | 3610 | mg/L |
| Chlorion | 17870 | mg/L |
| pH | 6.61 | |
| SO4 2- | 770 | mg/L |
| Total mercury | Do not detect | mg/L |
| Cadmium | 0.310 | mg/L |
| Total chromium | Do not detect | mg/L |
| Lead | 0.041 | mg/L |
| Arsenic | 0.050 | mg/L |
| Zinc | 5.500 | mg/L |
| Antimony | Do not detect | mg/L |
The utility model realizes the removing of heavy metal and Cl- in desulfurization wastewater using graduated response principle.
Waste water initially enters the first reaction chamber and carries out first time dechlorination processing, and effect is to remove big portion by precipitation reaction
Divide chlorion, the pH value rise of waste water, heavy metal ion also separate out therewith in the process.First reaction chamber water outlet enters first
Flocculation tanks, the flocculant into flocculation tanks, subsequent waste water enter the first clarification concentration basin and carry out mud-water separation.Underflow is through plate compression
Afterwards, filter residue and desulfurated plaster merging treatment, filtrate enter the second reaction chamber with clarification concentration basin supernatant and carried out at depth dechlorination
Reason.Second reaction chamber water outlet is after flocculating, concentrating, and overflow water reaches processing requirement and returns to desulphurization system, and it is anti-that underflow returns to first
Answer case.
Raw water sample is diluted to 12690mg/L, and the species to water purification agent, dosage, temperature, reaction time etc. have carried out one
The experiment of series, finally economy preferably under the premise of, it is determined that technique on probation.
Under more economical process conditions, the water sample index after processing is shown in Table 2.There it can be seen that water outlet chlorion contains
Measure as 4750g/L, removal efficiency 62.57%.Under the conditions of being somebody's turn to do, the removal efficiency of heavy metal is higher in water outlet, will not generation environment danger
Evil.
The effluent quality situation of table 2
| Project | Water inlet | Water outlet | Unit |
| Total suspended matter | 2551 | - | mg/L |
| Chlorion | 12690 | 4750 | mg/L |
| SO4 2- | 558 | 188 | mg/L |
| Total mercury | Do not detect | Do not detect | mg/L |
| Cadmium | 0.21 | Do not detect | mg/L |
| Total chromium | Do not detect | Do not detect | mg/L |
| Lead | 0.03 | Do not detect | mg/L |
| Arsenic | 0.04 | Do not detect | mg/L |
| Zinc | 4.01 | 0.005 | mg/L |
| Antimony | Do not detect | Do not detect | mg/L |
Claims (8)
1. a kind of desulfurization wastewater treatment system, it is characterised in that it includes the first reaction chamber（1）, the first flocculation tanks（2）, it is first clear
Clear concentration basin（3）, plate and frame filter press（4）, the second reaction chamber（5）, the second flocculation tanks（6）, second clarification concentration basin（7）, water outlet
Case（8）And desulfurization reuse case（9）,
Desulfurization wastewater flow to the first reaction chamber（1）It is interior, the first reaction chamber（1）Product enter the first flocculation tanks（2）, the first flocculation
Case（2）Product enter first clarification concentration basin（3）, the first clarification concentration basin（3）The first underflow enter plate and frame filter press
（4）, plate and frame filter press（4）Caused filtrate and the first clarification concentration basin（3）The first overflow enter the second reaction chamber jointly
（5）, the second reaction chamber（5）Product enter the second flocculation tanks（6）, the second flocculation tanks（6）Product enter second clarification concentrate
Pond（7）, the second clarification concentration basin（7）The second underflow be back to the first reaction chamber（1）It is interior, the second clarification concentration basin（7）
Two overflows enter water tank（8）, water tank（8）Product enter desulfurization reuse case（9）.
2. a kind of desulfurization wastewater treatment system according to claim 1, it is characterised in that the first reaction chamber and the second reaction
The specification of case is 2m × 3m × 3m.
3. a kind of desulfurization wastewater treatment system according to claim 1, it is characterised in that the first flocculation tanks and the second flocculation
The specification of case is 4m × 3m × 3m.
A kind of 4. desulfurization wastewater treatment system according to claim 1, it is characterised in that the first clarification concentration basin and second
The specification for clarifying concentration basin is 16m × 5m × 3m.
5. a kind of desulfurization wastewater treatment system according to claim 1, it is characterised in that the first reaction chamber and the second reaction
One, the anticorrosive agitators of 4kw built in case and pH meter one.
6. a kind of desulfurization wastewater treatment system according to claim 1, it is characterised in that the first flocculation tanks and the second flocculation
The anticorrosive low-speed agitators of built-in 2.0kw one of case.
A kind of 7. desulfurization wastewater treatment system according to claim 1, it is characterised in that the first clarification concentration basin and second
Clarify 4.5kw mud scrapers one and 11.0kw sludge pumps three built in concentration basin.
8. a kind of desulfurization wastewater treatment system according to claim 1, it is characterised in that the first reaction chamber, the second reaction
Case, the first flocculation tanks, the second flocculation tanks, the first clarification concentration basin and the second clarification interior Fluorine-lined steel plate of concentration basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720778703.6U CN206940612U (en) | 2017-06-30 | 2017-06-30 | Desulfurization wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720778703.6U CN206940612U (en) | 2017-06-30 | 2017-06-30 | Desulfurization wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206940612U true CN206940612U (en) | 2018-01-30 |
Family
ID=61367478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720778703.6U Expired - Fee Related CN206940612U (en) | 2017-06-30 | 2017-06-30 | Desulfurization wastewater treatment system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206940612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162269A (en) * | 2017-06-30 | 2017-09-15 | 江阴市尚时环境工程有限公司 | Desulfurization wastewater treatment system and its processing method |
-
2017
- 2017-06-30 CN CN201720778703.6U patent/CN206940612U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162269A (en) * | 2017-06-30 | 2017-09-15 | 江阴市尚时环境工程有限公司 | Desulfurization wastewater treatment system and its processing method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180130 Termination date: 20210630 |