CN107500438A - Desulfurization wastewater softens pre-processing device and its processing method - Google Patents
Desulfurization wastewater softens pre-processing device and its processing method Download PDFInfo
- Publication number
- CN107500438A CN107500438A CN201710905826.6A CN201710905826A CN107500438A CN 107500438 A CN107500438 A CN 107500438A CN 201710905826 A CN201710905826 A CN 201710905826A CN 107500438 A CN107500438 A CN 107500438A
- Authority
- CN
- China
- Prior art keywords
- desulfurization wastewater
- order reaction
- reaction groove
- softens
- filter
- 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.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 50
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 47
- 230000023556 desulfurization Effects 0.000 title claims abstract description 47
- 238000007781 pre-processing Methods 0.000 title claims abstract description 16
- 238000003672 processing method Methods 0.000 title abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 50
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 28
- 230000018044 dehydration Effects 0.000 claims abstract description 23
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 23
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 239000010802 sludge Substances 0.000 claims abstract description 18
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 239000000378 calcium silicate Substances 0.000 claims abstract description 6
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 6
- 241000628997 Flos Species 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 42
- 239000003814 drug Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 15
- 239000004571 lime Substances 0.000 claims description 11
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 10
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 5
- 238000005374 membrane filtration Methods 0.000 claims description 5
- 125000001741 organic sulfur group Chemical group 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 10
- 238000001556 precipitation Methods 0.000 abstract description 7
- 239000000919 ceramic Substances 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 6
- 239000010703 silicon Substances 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 229910001868 water Inorganic materials 0.000 description 14
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 10
- 238000012545 processing Methods 0.000 description 7
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 5
- 238000005352 clarification Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
- 239000000347 magnesium hydroxide Substances 0.000 description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- WJEIYVAPNMUNIU-UHFFFAOYSA-N [Na].OC(O)=O Chemical compound [Na].OC(O)=O WJEIYVAPNMUNIU-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000013327 media filtration Methods 0.000 description 1
- -1 noise Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to a kind of desulfurization wastewater softening pre-processing device and its processing method, include first order reaction groove, the first feeding mouth of dehydration device is connected with the discharging opening of first order reaction groove, second order reaction groove is connected with the discharging opening of dehydration device, filter is connected with the discharging opening of second order reaction groove, the discharging opening of filter is connected with sludge transfer canal, sludge transfer canal includes the first pipeline and second pipe, first pipeline connects desulfurizer, second pipe connects the second feeding mouth of dehydration device, connect and independent discharge mouth is provided with desulfurizer, detection means is installed on floss hole.Thus, the precipitation of calcium carbonate of second order reaction groove generation can direct reuse in desulphurization system, be not easy dirty blocking tubular film and ceramic membrane, extend the cleaning frequency, reduce operating cost.Overwhelming majority dissolving silicon is deposited in first order reaction groove, is not in the phenomenon of the anti-molten precipitated calcium silicate of sodium carbonate in second order reaction groove after dewaterer separation of solid and liquid.
Description
Technical field
The present invention relates to a kind of processing equipment and its processing method, more particularly to a kind of desulfurization wastewater softening pre-processing device
And its processing method.
Background technology
Sulfur dioxide (chemical formula SO2), it is one of the main reason for causing atmosphere pollution, and causes the important original of acid rain
Cause, it is one of Air Pollutant Discharge.The gas can be sprayed during volcano eruption, titanium dioxide can be also produced in many industrial process
Sulphur.Because coal and oil generally all contain element sulphur, therefore sulfur dioxide can be generated during burning.When sulfur dioxide is soluble in water,
Sulfurous acid can be formed.If sulfurous acid is further aoxidized under the conditions of existing for PM2.5, sulfuric acid will be efficiently produced rapidly.This
One of the reason for being exactly the worry to using these fuel as the environmental effect of the energy.
At the year end of cut-off 2010, the Target of Total Pollutant Amount Control that China completes the Eleventh Five-Year Plan period is annual SO2Discharge capacity 2246.7
Ten thousand tons, the wherein controlled quentity controlled variable of power industry is 951.7 ten thousand tons.In numerous industrial processes, coal fired power plant flue gas desulfurization system
System is SO2Discharge rich and influential family.Among these, lime stone~gypsum wet desulfurization is that power plant desulfurization is most widely used, technology is most ripe
Sulfur removal technology.In order to maintain the balance of desulfurizer serum recycle system material, soluble fraction i.e. cl concn in flue gas is prevented
More than setting and ensure gypsum quality, it is necessary to discharge a certain amount of waste water from system, waste water essentially from gypsum dehydration and
Purging system.Then the processing of desulfurization wastewater caused by this technique is the big problem that we face.Desulfurization wastewater mainly contained
Sulphite, suspension, sulfate and the heavy metal ion of saturation.Because most of material is advised in national environmental standard
The first fixed pollutant, environmental pollution are more serious.Therefore, it is necessary to discharged after being effectively treated to desulfurization wastewater.Then
The processing of desulfurization wastewater caused by this technique is the big problem that we face.
On April 16th, 2015, State Council's issue《Water pollution action plan》《Ten, water》, country will strengthen dirty to all kinds of water
The management of dye." ten, water " clearly proposes, to the year two thousand twenty, National Water Environmental quality obtains interim improvement, seriously polluted
Water body is reduced by a relatively large margin, and " taking charge of industrial pollution control severely " turns into vital task, and multinomial standard further becomes tight, some emphasis areas
Domain even will forbid sewage discharge.On September 30th, 2016, Chinese Ministry of Environmental Protection are issued on soliciting《Thermal power plant's pollution prevention technique policy》
With《The optimal practicable techniques guide of thermal power plant's prevention and cure of pollution》Opinion letter, to the waste gas of power plant emission, waste water, noise, solid
Basic technical policy is formulated in pollution caused by discarded object etc., is explicitly pointed out on waste water：Thermal power plant's water prevention and cure of pollution should follow
Remove contamination shunting, multi-purpose water, focus on the principle being combined with decentralized processing, encourage thermal power plant to realize the recycling of waste water
It is not outer to arrange.Thermal power plant has some techniques to be set and running in desulfurization wastewater Zero discharging system at present.
Desulfurization wastewater Zero discharging system generally point three process sections, the first process section pre-process for softening, the second process section
To be reduced concentration, the 3rd process section is crystallization salt manufacturing.The main purpose for softening preprocessing part is by adding lime, carbon
The medicaments such as sour sodium carry out reaction precipitation, and final filtration removes solid sediment, and clear liquid meets that the technique of subsequent concentration crystallization will
Ask.Conventional process route is as follows：
1) dosing reaction (lime, NaOH, sodium carbonate or sodium sulphate etc. can be added) softening+one or more levels clarification+medium
Filtering；
2) dosing reaction softening+tubular membrane or ceramic membrane filter；
3) plus lime softening+one-level clarifies+other medicament (generally sodium carbonate) softenings+two level clarification+media filtration；
4) lime softening+one-level clarification+other medicament softening+tubular membranes or ceramic membrane filter are added.
PH value is adjusted to more than 11.5 to desulfurization wastewater feeding lime, and aids in adding flocculant and organic sulfur etc., then
Sodium carbonate or sodium sulphate medicament are added, is sunk respectively with the calcium ions and magnesium ions reaction generation calcium carbonate in water or calcium sulfate and magnesium hydroxide
Forming sediment, react generation sulfide precipitation with heavy metal, the water after precipitation softens is added after flocculant flocculation and settled through clarifier,
Precipitating sludge transports outward landfill after being transported to dewatering system desiccation with sludge delivery pump, supernatant filter off most of in water removal
Suspension.This filter plant includes filter, tubular membrane or other equipment.Four kinds of process routes of the above cover mesh substantially
Preceding desulfurization wastewater zero-emission project application.
The defects of these techniques is：When the magnesium ion and higher sulfate ion concentration that water contains, the precipitation of generation
Thing is not easily separate, and depositing reservoir floor space is very big, and effluent quality is difficult to ensure that, chemical feeding quantity is huge and easy adds
Lime and sodium carbonate directly react, and if in desulfurization wastewater containing a large amount of supersaturated calcium sulfate suspension when, can also disappear
Consume a large amount of sodium carbonate medicaments and react generation calcium carbonate and sodium sulphate, cause reagent cost very high.Technological process length causes to throw
It is very high to provide cost, and floor space is larger.Easily there is the problem of various dirty stifled and foulings, filter and film separation system are anti-
Wash frequent with Chemical cleaning.
In view of it is above-mentioned the defects of, the design people, be actively subject to research and innovation, it is pre- to found a kind of softening of desulfurization wastewater
Processing equipment and its processing method, make it with more the value in industry.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of desulfurization wastewater softening pre-processing device and its place
Reason method.
The desulfurization wastewater softening pre-processing device of the present invention, includes first order reaction groove, wherein：The first order reaction groove
The first feeding mouth of dehydration device is connected with discharging opening, second order reaction groove, institute are connected with the discharging opening of the dehydration device
To state and filter is connected with the discharging opening of second order reaction groove, the discharging opening of the filter is connected with sludge transfer canal,
The sludge transfer canal includes the first pipeline and second pipe, and first pipeline connects desulfurizer, the second pipe
The second feeding mouth of dehydration device is connected, described connect is provided with independent discharge mouth, be provided with the floss hole on desulfurizer
Detection means.
Further, above-mentioned desulfurization wastewater softening pre-processing device, wherein, the dehydration device be plate and frame filter press,
One or more in centrifugal dehydrator.
Further, above-mentioned desulfurization wastewater softening pre-processing device, wherein, the filter is tubular type membrane filtration
Device, or the filter purpose ceramic-film filter.
Further, above-mentioned desulfurization wastewater softening pre-processing device, wherein, communication is installed in the detection means
Alarm component.
The desulfurization wastewater softening preprocess method of the present invention, it comprises the following steps：
Step 1, desulfurization wastewater initially enter first order reaction groove and reacted；
Step 2, it is dehydrated separation of solid and liquid；
Step 3, precipitated using second order reaction groove；
Step 4, filtration treatment；
Step 5, weak acid resin filtering.
Further, above-mentioned desulfurization wastewater softening preprocess method, wherein, in the step 1, in the first reactive tank
Middle addition lime medicament, regulation pH value selectively add the one or more in flocculant, organic sulfur, stirred to 9.5 to 12.5
It is abundant to mix reaction.
Further, above-mentioned desulfurization wastewater softening preprocess method, wherein, in the step 2, filled into dehydration
Carry out separation of solid and liquid is put, press filtration obtains clear liquid, and caused sludge takes outward transport landfill or the production original as other industry
Material.
Further, above-mentioned desulfurization wastewater softening preprocess method, wherein, in the step 3, step 2 is obtained
To clear liquid be directly entered second order reaction groove, add sodium carbonate medicament, or auxiliary adds magnesium chloride medicament, reaction generation simultaneously
Calcium carbonate and silicate precipitates.
Further, above-mentioned desulfurization wastewater softening preprocess method, wherein, in the step 4, filled by filtering
Carry out membrane filtration is put, caused sludge is fed directly to supplement of the desulfurizer as lime stone, or returns to dehydration device concentration
Processing.
Yet further, above-mentioned desulfurization wastewater softening preprocess method, wherein, in the step 5, the clear liquid of acquisition
Below turbidity 0.2NTU, hardness are removed to 0mg/L.
By such scheme, the present invention at least has advantages below：
1st, eliminate that floor space is big, the high clarification process section equipment of cost of investment.
2nd, eliminate caused by influent quality fluctuates that settling section process equipment blocks, water outlet is unqualified, chemical feeding quantity is difficult to
The problems such as control.
3rd, dewaterer process section removes the suspension in most waters and the solid particulate matter of first order reaction groove generation,
Include the magnesium hydroxide particle of particle diameter very little, sodium carbonate reagent consumption amount can be at utmost saved in follow-up second order reaction groove.
4th, second order reaction groove generation precipitation of calcium carbonate can direct reuse in desulphurization system, and due to calcium carbonate particle diameter compared with
Greatly, dirty blocking tubular film and ceramic membrane are not easy, extends the cleaning frequency, reduces operating cost.
5th, overwhelming majority dissolving silicon is deposited in first order reaction groove, after dewaterer separation of solid and liquid, will not be gone out
The phenomenon of the anti-molten precipitated calcium silicate of sodium carbonate in existing second order reaction groove, and it is aided with adding for the desiliconizing agents such as magnesium chloride, can be by silicon
Content is removed to below 2mg/L.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is the structural representation of desulfurization wastewater softening pre-processing device.
The implication of each reference is as follows in figure.
The dehydration device of 1 first order reaction groove 2
The filter of 3 second order reaction groove 4
The second pipe of 5 first pipeline 6
The independent discharge mouth of 7 desulfurizer 8
9 detection means
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Desulfurization wastewater such as Fig. 1 softens pre-processing device, includes first order reaction groove 1, its unusual part is：One
The first feeding mouth of dehydration device 2 is connected with the discharging opening of order reaction groove 1.Meanwhile in order to realize at orderly classification waste water
Manage, second order reaction groove 3 is connected with the discharging opening of dehydration device 2.Also, filtering is connected with the discharging opening of second order reaction groove 3
Device 4, complete necessary filter progress.In view of effectively being utilized to the sludge during processing, realize resources circulation and carry
Rise clean-up effect, the discharging opening of filter 4 is connected with sludge transfer canal, and sludge transfer canal includes the first pipeline 5 and the
Two pipelines 6.Specifically, the first pipeline 5 connection desulfurizer 7, second pipe 6 connect the second feeding mouth of dehydration device 2.Again
Person, for the ease of implementing, connect and independent discharge mouth 8 is provided with desulfurizer 7, detection means 9 is installed on floss hole.
From the point of view of a preferable embodiment of the invention, in order to lift dehydrating effect, the dehydration device 2 used is sheet frame
One or more in filter press, centrifugal dehydrator.Meanwhile according to the difference of actual treatment demand, other can also be used
Dewatering process equipment.Also, in view of filter effect can be lifted, and filtering rate is lifted, filter 4 is tubular type membrane filtration
Device, or the purpose ceramic-film filter of filter 4.
From the point of view of further, the present invention is provided with communication alarm component in detection means 9.So, can once there is exception
The very first time alerts, and is easy to user to carry out scene investigation and safeguard, the exception for avoiding the occurrence of desulfurization wastewater leaks.
From the point of view of further, in order to preferably coordinate the use of present treatment equipment, it is pre- now to provide a kind of desulfurization wastewater softening
Processing method, it comprises the following steps：
Step 1, desulfurization wastewater initially enter first order reaction groove and reacted.Lime medicament is added in the first reactive tank,
Need to adjust pH value to 9 to 12 according to subsequent technique, selectively add the one or more in flocculant, organic sulfur, stir
Reaction is abundant.
Step 2, it is dehydrated separation of solid and liquid.Specifically, separation of solid and liquid is carried out into dehydration device, press filtration obtains clear liquid.
During this, caused sludge can take outward transport landfill or the raw materials for production as other industries such as buildings.Hereby it is achieved that money
Source recycles.
Step 3, precipitated using second order reaction groove.The clear liquid that step 2 is obtained is directly entered second order reaction groove, throws
Add sodium carbonate medicament.Certainly, in order to lift sedimentation effect, it can aid in adding magnesium chloride medicament etc. simultaneously and remove silicon medicament, reaction life
Into calcium carbonate and silicate precipitates.
Step 4, filtration treatment.During this period, membrane filtration is carried out by filter, (concentration is generally caused sludge
3-5%) it is fed directly to supplement of the desulfurizer as lime stone.Or these sludge are returned into dehydration device and focused on, no
Pollute environment.
Step 5, weak acid resin filtering, below the clear liquid turbidity 0.2NTU of acquisition, fully meet follow-up various condensing crystallizings
The requirement of technique, to remove the remaining calcium and magnesium of trace, weak acid resin filtering technique can also be passed through again, hardness is removed to connecing
Nearly 0mg/L.
In simple terms, this softening preprocess method be first order reaction (only plus lime and organic sulfur)+dewaterer (sheet frame or from
Core type or other forms)+second order reaction (only plus sodium carbonate)+tubular membrane or ceramic membrane filter.
Sum it up, the present invention, during implementation, technological process is short, cost of investment is low, floor space is small, lime and carbonic acid
Sodium operation dosage is low, system operation is safeguarded simply.The softening preprocess method of use without three headers mainly for handling
Desulfurization wastewater, and not requiring calcium sulfate suspension content, and containing the higher desulfurization wastewater of magnesium and sulfate ion, one
As magnesium ion content in more than 1000mg/L, sulfate ion content can be more closed with this pretreating process in more than 5000mg/L
It is suitable.
It is can be seen that by above-mentioned character express and with reference to accompanying drawing using after the present invention, gather around and have the following advantages：
1st, eliminate that floor space is big, the high clarification process section equipment of cost of investment.
2nd, eliminate caused by influent quality fluctuates that settling section process equipment blocks, water outlet is unqualified, chemical feeding quantity is difficult to
The problems such as control.
3rd, dewaterer process section removes the suspension in most waters and the solid particulate matter of first order reaction groove generation,
Include the magnesium hydroxide particle of particle diameter very little, sodium carbonate reagent consumption amount can be at utmost saved in follow-up second order reaction groove.
4th, second order reaction groove generation precipitation of calcium carbonate can direct reuse in desulphurization system, and due to calcium carbonate particle diameter compared with
Greatly, dirty blocking tubular film and ceramic membrane are not easy, extends the cleaning frequency, reduces operating cost.
5th, overwhelming majority dissolving silicon is deposited in first order reaction groove, after dewaterer separation of solid and liquid, will not be gone out
The phenomenon of the anti-molten precipitated calcium silicate of sodium carbonate in existing second order reaction groove, and it is aided with adding for the desiliconizing agents such as magnesium chloride, can be by silicon
Content is removed to below 2mg/L.
Described above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is some improvement and
Modification, these improvement and modification also should be regarded as protection scope of the present invention.
Claims (10)
1. desulfurization wastewater softens pre-processing device, include first order reaction groove (1), it is characterised in that：The first order reaction groove (1)
Discharging opening on be connected with the first feeding mouth of dehydration device (2), it is anti-to be connected with two level on the discharging opening of the dehydration device (2)
Groove (3) is answered, filter (4), the discharging opening of the filter (4) are connected with the discharging opening of the second order reaction groove (3)
Sludge transfer canal is connected with, the sludge transfer canal includes the first pipeline (5) and second pipe (6), first pipeline
(5) desulfurizer (7) is connected, the second feeding mouth of second pipe (6) the connection dehydration device (2) is described to connect desulfurizer
(7) independent discharge mouth (8) is provided with, detection means (9) is installed on the floss hole.
2. desulfurization wastewater according to claim 1 softens pre-processing device, it is characterised in that：The dehydration device (2) is
One or more in plate and frame filter press, centrifugal dehydrator.
3. desulfurization wastewater according to claim 1 softens pre-processing device, it is characterised in that：The filter (4) is
Tubular type film filter, or the filter (4) purpose ceramic-film filter.
4. desulfurization wastewater according to claim 1 softens pre-processing device, it is characterised in that：On the detection means (9)
Communication alarm component is installed.
5. desulfurization wastewater softens preprocess method, it is characterised in that comprises the following steps：
Step 1, desulfurization wastewater initially enter first order reaction groove and reacted；
Step 2, it is dehydrated separation of solid and liquid；
Step 3, precipitated using second order reaction groove；
Step 4, filtration treatment；
Step 5, weak acid resin filtering.
6. desulfurization wastewater according to claim 5 softens preprocess method, it is characterised in that：In the step 1,
Lime medicament is added in one reactive tank, regulation pH value to 9.5 to 12.5, selectively add one kind in flocculant, organic sulfur or
It is a variety of, stirring reaction is abundant.
7. desulfurization wastewater according to claim 5 softens preprocess method, it is characterised in that：In the step 2, enter
Dehydration device carries out separation of solid and liquid, and press filtration obtains clear liquid, and caused sludge takes outward transport to fill or as other industry
Raw materials for production.
8. desulfurization wastewater according to claim 5 softens preprocess method, it is characterised in that：In the step 3, it will walk
Rapid two obtained clear liquids are directly entered second order reaction groove, add sodium carbonate medicament, or auxiliary adds magnesium chloride medicament simultaneously, instead
Calcium carbonate and silicate precipitates should be generated.
9. desulfurization wastewater according to claim 5 softens preprocess method, it is characterised in that：In the step 4, pass through
Filter carries out membrane filtration, and caused sludge is fed directly to supplement of the desulfurizer as lime stone, or returns to dehydration dress
Put and focus on.
10. desulfurization wastewater according to claim 5 softens preprocess method, it is characterised in that：In the step 5, obtain
Below clear liquid turbidity 0.2NTU, hardness removed to 0mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905826.6A CN107500438A (en) | 2017-09-29 | 2017-09-29 | Desulfurization wastewater softens pre-processing device and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905826.6A CN107500438A (en) | 2017-09-29 | 2017-09-29 | Desulfurization wastewater softens pre-processing device and its processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107500438A true CN107500438A (en) | 2017-12-22 |
Family
ID=60700184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710905826.6A Pending CN107500438A (en) | 2017-09-29 | 2017-09-29 | Desulfurization wastewater softens pre-processing device and its processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107500438A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2893202A1 (en) * | 2012-12-07 | 2014-06-12 | Aquatech International Corporation | Water treatment process |
| CN105130084A (en) * | 2015-09-28 | 2015-12-09 | 张博 | Recycling treatment device for desulfurized waste water and method thereof |
| CN105540939A (en) * | 2016-03-14 | 2016-05-04 | 北京沃特尔水技术股份有限公司 | Device and method for removing calcium, magnesium, fluorine and silicon elements in wastewater |
| CN105621742A (en) * | 2016-02-05 | 2016-06-01 | 大唐环境产业集团股份有限公司 | Desulfurization waste water softening device and desulfurization waste water softening method |
| CN106630343A (en) * | 2016-11-02 | 2017-05-10 | 华润电力（菏泽）有限公司 | Method and system for treating desulfurization wastewater |
| CN207330580U (en) * | 2017-09-29 | 2018-05-08 | 杭州匠容道环境科技有限公司 | Desulfurization wastewater softens pre-processing device |
-
2017
- 2017-09-29 CN CN201710905826.6A patent/CN107500438A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2893202A1 (en) * | 2012-12-07 | 2014-06-12 | Aquatech International Corporation | Water treatment process |
| CN105130084A (en) * | 2015-09-28 | 2015-12-09 | 张博 | Recycling treatment device for desulfurized waste water and method thereof |
| CN105621742A (en) * | 2016-02-05 | 2016-06-01 | 大唐环境产业集团股份有限公司 | Desulfurization waste water softening device and desulfurization waste water softening method |
| CN105540939A (en) * | 2016-03-14 | 2016-05-04 | 北京沃特尔水技术股份有限公司 | Device and method for removing calcium, magnesium, fluorine and silicon elements in wastewater |
| CN106630343A (en) * | 2016-11-02 | 2017-05-10 | 华润电力（菏泽）有限公司 | Method and system for treating desulfurization wastewater |
| CN207330580U (en) * | 2017-09-29 | 2018-05-08 | 杭州匠容道环境科技有限公司 | Desulfurization wastewater softens pre-processing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104150669B (en) | Heat-engine plant desulfurized waste water purification system and purifying method | |
| CN105000713B (en) | A kind of desulfurization wastewater treatment system and method | |
| CN104803504B (en) | Novel desulfurization waste water treatment method | |
| CN105214474B (en) | A kind of flue gas desulfurization waste-water pretreatment system integrated with sludge and its technique | |
| CN105540977A (en) | Desulfurized waste water treatment method and system | |
| CN204824453U (en) | Desulfurization pretreatment of water device that gives up | |
| CN106881319B (en) | A kind of the plastic container cleaning system and its working method of sewage zero-discharge | |
| CN106966534A (en) | Desulfurization wastewater Zero discharging system and technique based on ion selectivity electrodialytic technique | |
| CN204325024U (en) | A kind of novel lead-acid storage battery heavy metal waste water treatment system | |
| CN108726727A (en) | Treatment method of cold rolling acid wastewater and application of sintered semi-dry desulfurization ash | |
| CN107285489A (en) | A kind of device and method of desulfurization wastewater pretreatment | |
| CN108083483A (en) | A kind of papermaking or the decoloration treatment method of dyeing waste water | |
| CN107721037A (en) | A kind of high ammonia nitrogen desulfurization wastewater processing up to standard and reclaiming system and method | |
| CN106938866A (en) | A kind of desulfurization wastewater resource utilization system and method | |
| CN207330580U (en) | Desulfurization wastewater softens pre-processing device | |
| CN103011462B (en) | Device and method for treating waste residues of circulating make-up water by reutilizing lime softening method of power plant | |
| CN107215980A (en) | The device and method of novel desulphurization wastewater treatment | |
| CN212864234U (en) | Slurry desalting device of limestone desulfurization system | |
| CN206666277U (en) | Desulfurization wastewater treatment system | |
| CN106430713A (en) | Wet desulphurization wastewater zero-discharge treatment device | |
| CN206751583U (en) | Desulfurization wastewater Zero discharging system based on ion selectivity electrodialytic technique | |
| CN110813045A (en) | Water treatment sludge recovery method | |
| US6207062B1 (en) | Treatment of aqueous effluents by injection of carbon dioxide | |
| CN206901925U (en) | The device of novel desulphurization wastewater treatment | |
| CN206156907U (en) | Sewage treatment system is arranged in thermal power plant's circulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |
|
| RJ01 | Rejection of invention patent application after publication |