CN110127904A - A kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique - Google Patents
A kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique Download PDFInfo
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- CN110127904A CN110127904A CN201910491575.0A CN201910491575A CN110127904A CN 110127904 A CN110127904 A CN 110127904A CN 201910491575 A CN201910491575 A CN 201910491575A CN 110127904 A CN110127904 A CN 110127904A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 title claims abstract description 40
- 239000000126 substance Substances 0.000 title claims abstract description 33
- 239000003245 coal Substances 0.000 title claims abstract description 28
- 238000002309 gasification Methods 0.000 title claims abstract description 28
- 239000003337 fertilizer Substances 0.000 title claims abstract description 27
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 25
- 239000002351 wastewater Substances 0.000 claims abstract description 89
- 238000004062 sedimentation Methods 0.000 claims abstract description 55
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000005189 flocculation Methods 0.000 claims abstract description 54
- 230000016615 flocculation Effects 0.000 claims abstract description 54
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 54
- 239000011737 fluorine Substances 0.000 claims abstract description 54
- 238000012545 processing Methods 0.000 claims abstract description 22
- 230000010354 integration Effects 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 97
- 230000003750 conditioning effect Effects 0.000 claims description 52
- 239000007788 liquid Substances 0.000 claims description 31
- 239000010802 sludge Substances 0.000 claims description 23
- 239000006228 supernatant Substances 0.000 claims description 21
- 230000008929 regeneration Effects 0.000 claims description 16
- 238000011069 regeneration method Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 229920002401 polyacrylamide Polymers 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 239000006004 Quartz sand Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 7
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 5
- 229910001424 calcium ion Inorganic materials 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 7
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 12
- 239000002699 waste material Substances 0.000 description 11
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 7
- 239000001110 calcium chloride Substances 0.000 description 6
- 229910001628 calcium chloride Inorganic materials 0.000 description 6
- 238000003756 stirring Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006115 defluorination reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 ferromanganese ion Chemical class 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005406 washing 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- 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
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 Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment techniques, the present invention is specifically includes the following steps: step S11, the on-line monitoring of waste water and processing, step S12, the homogeneous of waste water, amount and pH are adjusted, step S13, the fluorine removal processing of waste water, the present invention relates to technical field of waste water processing.The coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique and method, it can be achieved to greatly strengthen the flexibility of technique, operating automation degree is high, it is simple and convenient, integration pretreatment flocculation sedimentation equipment can change and adjust at any time according to demand, operation working condition is switched into when having demand, without demand when can switch and stop working reduction and reduce operating cost, and integration pretreatment flocculation sedimentation equipment can also vehicle-mounted or lifting, with high practicability and flexibility.
Description
Technical field
The present invention relates to technical field of waste water processing, specially a kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment work
Skill.
Background technique
Wastewater treatment is exactly to be handled using the method for physics, chemistry and biology waste water, makes purification of waste water, is reduced dirty
Dye makes full use of water resource so that reaching Sewage treatment, multiplexing.Separated from contaminants each in waste water is come out or converted it into
The process of innocuous substance, with the continuous development of society, increasingly attention environmental protection is needed to industrial wastewater, biological sewage
And breeding wastewater etc. carries out purified treatment, environment is avoided pollution, wherein to coal gasification fluoride waste and chemical fertilizer factory chemical plant
The processing of fluoride waste is more important.
The technique that coal gasification fluoride waste and chemical fertilizer factory's chemical plant fluoride waste are handled at present, flexibility compared with
Difference, operating automation degree are low, and complex process, are not applied for that spatial position is limited and the sewage treatment of improvement project,
Can not achieve can change and adjust at any time according to demand by using integration pretreatment flocculation sedimentation equipment, cut when having demand
Swap-in enters to run working condition, without demand when can switch and stop working reduction and reduce operating cost, be unable to reach and mention
The purpose of high integration pretreatment flocculation sedimentation equipment practicability and flexibility, thus to coal gasification fluoride waste and chemical fertilizer factory
The processing of chemical plant fluoride waste is very unfavorable.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique,
Solve the technique that existing coal gasification fluoride waste and chemical fertilizer factory's chemical plant fluoride waste are handled, flexibility is poor,
Operating automation degree is low, and complex process, is not applied for that spatial position is limited and the sewage treatment of improvement project, cannot
Realizing can change and adjust at any time according to demand by using integration pretreatment flocculation sedimentation equipment, be switched into when having demand
Enter to run working condition, without demand when can switch stop working reduction and reduce operating cost, be unable to reach raising one
Bodyization pre-processes the problem of flocculation sedimentation equipment practicability and flexibility purpose.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of coal gasification and chemical fertilizer factory contain
Fluorine waste water treatment process, specifically includes the following steps: the on-line monitoring of step S11, waste water and processing: waste water initially enters online
Detector, when on-line detector detects the fluorinated volume of the waste water less than or equal to threshold value, the waste water is directly entered tune
Pond is saved, when on-line detector detects the fluorinated volume of the waste water greater than the threshold value, the waste water enters integrated flocculation
Settling apparatus enters back into conditioning tank after integration apparatus is handled；Step S12, the homogeneous of waste water, amount and pH are adjusted: by
Conditioning tank carries out homogeneous to waste water and after amount, is delivered to pH conditioning tank, adjusts the pH value of the waste water to preset range；Step
The fluorine removal processing of S13, waste water: being delivered to surge tank for waste water in pH conditioning tank, then enter fluorine removing filter from bottom, described to remove
The bottom of fluororesin filter device is provided with strainer and/or quartz sand, is provided with activated alumina above the strainer and/or quartz sand
Filler, discharge after the content of fluoride of waste water is up to standard.
Further, the technique further include: the step S21, backwash and regeneration of fluorine removing filter: by backwash water from fluorine removal
The top of filter intakes, and backwash tube water outlet in bottom carries out backwash to the fluorine removing filter, by regenerated liquid from fluorine removing filter
Bottom is delivered in the fluorine removing filter, until the fluorine removing filter is full of, is impregnated to filtrate, after the completion of immersion
It empties and rinses, complete the regeneration to the fluorine removing filter；Step S22, the natural sedimentation processing of backwash water and regenerated liquid: will
Backwash water or regenerated liquid drain into backwash liquor storage pool, and after natural sedimentation, base sludge is delivered to sludge-tank, supernatant conveying
To flocculation sedimentation equipment；Step S23, the flocculation treatment of waste water: added respectively into flocculation sedimentation equipment calcium ions solution and
Flocculant, after precipitation, base sludge is delivered to sludge-tank to mixed liquor, and supernatant is delivered to conditioning tank.
Further, in the step S11, the waste water enters integrated flocculation sedimentation equipment, by integration apparatus
Processing includes: to add calcium ions solution into the integrated flocculation sedimentation equipment, and stir, wherein the revolving speed of blender
For 60-80r/min, mixing time 10-15min；Polyaluminium aluminum flocculation is added into the integrated flocculation sedimentation equipment
Agent PAC, and stir, blender is two-stage revolving speed, wherein the revolving speed of first order blender is 15-30r/min, mixing time is
5-10min, the revolving speed of second level blender is 8-15r/min, time 10-15min；To the integrated flocculation sedimentation equipment
In add polyacrylamide flocculant PAM, and stir, the revolving speed of blender is 5-10r/min, mixing time 10-15min.
Further, in the step S12, after being carried out homogeneous to waste water by conditioning tank and being measured, it is delivered to pH conditioning tank
Include: that waste water is delivered to by pH conditioning tank by variable-frequency delivery pump, conditioning tank and pH conditioning tank are detected by ultrasonic level gage
Water level, and control the working frequency of the variable-frequency delivery pump, wherein adjust pool water level lower than 0.5m or pH when adjusting pool water level
When higher than design ordinary water level 0.5m, the variable-frequency delivery pump is out of service, is not less than 0.5m, pH conditioning tank when adjusting pool water level
For water level lower than peak level and when being higher than design ordinary water level, the variable-frequency delivery pump carries out the low frequency operation of 10Hz, works as tune
It saves pool water level and is not less than 0.5m, when pH adjusts pool water level lower than normal design water level, the variable-frequency delivery pump carries out expiring for 50Hz
Load operation.
Further, in the step S13, waste water in pH conditioning tank is delivered to surge tank, then enter fluorine removal from bottom
Filter include: by frequency conversion intake pump will adjust pH after waste water be forced into fluorine removing filter, pass through constant pressure water supply power distribution cabinet control
The working frequency of the frequency conversion intake pump is made, after setting operating pressure, by main pipeline distance-transmission pressure gauge feedback signal, works as pressure
When table feedback signal is lower than setting pressure, the working frequency of the frequency conversion intake pump is increased until actual pressure is equal to the institute of setting
Operating pressure is stated, the frequency conversion intake pump includes at least one, when First frequency conversion intake pump expires frequency run and is unsatisfactory for pressing
When power, starts second water pump automatically and gradually rise frequency, and so on.
Further, in the step S12, after being carried out homogeneous to waste water by conditioning tank and being measured, it is delivered to pH conditioning tank,
PH value to the preset range for adjusting the waste water includes: acid solution or lye to be added to pipe-line mixer by metering pump, and pass through
The pH value of waste water in online pH meter monitoring pH conditioning tank, when the pH value of waste water in pH conditioning tank reaches the preset range, meter
Amount pump is automatically stopped operation.
Further, in the step S22, supernatant be delivered to flocculation sedimentation equipment include: will be upper by supernatant liquid pump
Clear liquid is delivered to flocculation sedimentation equipment, wherein when the water level of the backwash liquor storage pool is higher than preset water level value, the supernatant
Liquid pump starts automatically, while flocculation sedimentation equipment starts automatically, when the water level of the backwash liquor storage pool is lower than the default water
When place value, the supernatant liquid pump is automatically stopped operation, while flocculation sedimentation equipment is automatically stopped operation.
Further, in the step S23, it includes: by sludge pump by base sludge that base sludge, which is delivered to sludge-tank,
It is delivered to sludge-tank, wherein the sludge pump starts spoil disposal by predetermined period.
Further, the operating status of fluorine removing filter is set by motor-driven valve control panel, wherein when intake pressure increases
When big or water flow is reduced, backwash mode is set by the fluorine removing filter, when influent quality is normal, is discharged still after backwash
When not up to standard, regeneration mode is set by the fluorine removing filter.
Further, when on-line detector detect the waste water fluorinated volume be greater than the threshold value when, the waste water into
Before entering integrated flocculation sedimentation equipment, the technique further include: the waste water is delivered to cache pool, in Xiang Suoshu cache pool
Active carbon is added and carries out adsorption treatment.
(3) beneficial effect
The present invention provides a kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment techniques.Have compared with prior art with
It is lower the utility model has the advantages that the coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique, specifically includes the following steps: step S11, waste water
On-line monitoring and processing: waste water initially enters on-line detector, when on-line detector detects that the fluorinated volume of the waste water is less than
Or when being equal to threshold value, the waste water is directly entered conditioning tank, when on-line detector detects that the fluorinated volume of the waste water is greater than institute
When stating threshold value, the waste water enters integrated flocculation sedimentation equipment, enters back into conditioning tank after integration apparatus is handled；Step
S12, the homogeneous of waste water, amount and pH are adjusted: after being carried out homogeneous to waste water by conditioning tank and being measured, being delivered to pH conditioning tank, adjusted
The pH value of the waste water is saved to preset range；Step S13, waste water in pH conditioning tank the fluorine removal processing of waste water: is delivered to buffering
Tank, then enter fluorine removing filter from bottom, the bottom of the fluorine removing filter is provided with strainer and/or quartz sand, the strainer
And/or active oxidation Al filler is provided with above quartz sand, discharge after the content of fluoride of waste water is up to standard.It can be achieved to increase greatly
The strong flexibility of technique, operating automation degree is high, simple and convenient, limited especially for spatial position and improvement project is outstanding
Be it is applicable, integration pretreatment flocculation sedimentation equipment can change and adjust at any time according to demand, fortune is switched into when having demand
Row working condition, without demand when can switch stop working reduction and reduce operating cost, and the integration pretreatment wad a quilt with cotton
Solidifying settling apparatus can have high practicability and flexibility with the vehicle-mounted or a certain clear position of lifting.
Detailed description of the invention
Fig. 1 is the schematic block of a kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique according to the embodiment of the present invention
Figure；
Fig. 2 is the front view according to the integrated flocculation sedimentation device structure of the embodiment of the present invention；
Fig. 3 is the top view according to the integrated flocculation sedimentation device structure of the embodiment of the present invention；
Fig. 4 is the water distributor aperture schematic diagram according to the embodiment of the present invention；
Fig. 5 is the sludge pipe aperture schematic diagram according to the embodiment of the present invention；
Fig. 6 is the flow chart of a kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique according to the embodiment of the present invention；
Fig. 7 is the tables of data figure according to the Inlet and outlet water water quality of the embodiment of the present invention each index after processing.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-7 is please referred to, the embodiment of the present invention provides a kind of technical solution: a kind of coal gasification and chemical fertilizer factory's fluoride waste
Treatment process, specifically includes the following steps:
Step S11, the on-line monitoring of waste water and processing: waste water initially enters on-line detector, when on-line detector detects
To waste water fluorinated volume be less than or equal to threshold value when, waste water is directly entered conditioning tank, when on-line detector detects containing for waste water
When fluorine amount is greater than threshold value, waste water enters integrated flocculation sedimentation equipment, enters back into conditioning tank after integration apparatus is handled.
In an alternative embodiment, when on-line detector detect fluorinated volume be less than or equal to 4 when, waste water directly into
Enter conditioning tank, when on-line detector detects that fluorinated volume is greater than 4, waste water enters integrated flocculation sedimentation equipment, first passes through one
Conditioning tank is entered back into after the processing of body equipment.Optionally, the competitive Adsorption ion relatively high if there is content, as SO42-,
Cl- etc., and when content of organics is higher, it needs to be arranged before integrated flocculation sedimentation equipment cache pool, active carbon is added and inhales
It is attached, integrated flocculation sedimentation equipment is entered after absorption.Optionally, it before starting water pump, checks whether exits and entrances valve is opened, passes
Whether moving axis periphery has foreign matter, and self-sucking pot water level, which must not be lower than half, should first exhaust sampling valve pipe when sampling is detected
Water body in road, guarantee water sample are fresh water outlet；
Step S12, the homogeneous of waste water, amount and pH are adjusted: after being carried out homogeneous to waste water by conditioning tank and being measured, being delivered to
PH conditioning tank adjusts the pH value of waste water to preset range；
In an alternative embodiment, pH value preset range is 6.5-7.0, by conditioning tank to raw water progress homogeneous and
After amount, it is promoted to pH conditioning tank through variable-frequency delivery pump, the concentrated sulfuric acid is added into pipe-line mixer by metering pump in the process,
Reach pH between 6.5-7.0, before starting frequency conversion intake pump, need to first open fluorine removing filter inlet valve or main pipeline coupling cock,
Control cabinet should first set pressure and rise to required pressure as 0.05Mpa, after half a minute, when meter readings disorder, should open buffering
Tank top exhaust valve, until water outlet, avoids hitting concentrated sulfuric acid dosing pipeline and dismantle medicine system accessory；
Step S13, the fluorine removal processing of waste water: waste water in pH conditioning tank is delivered to surge tank, then enters fluorine removal from bottom
Filter, the bottom of fluorine removing filter are provided with strainer and/or quartz sand, and the top setting of strainer and/or quartz sand is active
Alumina packing, discharge after the content of fluoride of waste water is up to standard.
In an alternative embodiment, raw water in pH conditioning tank is delivered to after surge tank the bottom of from by frequency conversion intake pump
Portion enters fluorine removing filter, and filter bottom is covered with strainer and quartz sand, can reduce influent turbidity and suspended matter, on quartz sand
Side is equipped with a large amount of active oxidation Al fillers, can effectively adsorb fluoride in water, water outlet content of fluoride heel row up to standard to total row
Canal.Optionally, in time cleaning inlet strainer and conditioning tank water float impurity, fluorine removing filter be fluoride-removing equipment, need to guarantee into
Water turbidity meets the requirements, and when adjusting Inlet and outlet water water, should slowly rotate exit butterfly valve and in line connection butterfly valve, and when normal operation answers
Connection butterfly valve is completely closed, interference effluent quality is avoided；
Optionally, a kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique of the embodiment of the present invention further include:
Step S21, the backwash and regeneration of fluorine removing filter: backwash water is intake from the top of fluorine removing filter, bottom is anti-
Pipe water outlet is washed, backwash is carried out to fluorine removing filter, regenerated liquid is delivered in fluorine removing filter from fluorine removing filter bottom, until
Fluorine removing filter is full of, filtrate is impregnated, empties and rinses after the completion of impregnating, completes the regeneration to fluorine removing filter；
Step S22, backwash water or regenerated liquid the natural sedimentation processing of backwash water and regenerated liquid: are drained into backwash liquor storage
Pond, after natural sedimentation, base sludge is delivered to sludge-tank, and supernatant is delivered to flocculation sedimentation equipment；
Step S23, the flocculation treatment of waste water: adding calcium ions solution and flocculant into flocculation sedimentation equipment respectively,
After precipitation, base sludge is delivered to sludge-tank to mixed liquor, and supernatant is delivered to conditioning tank.
In an alternative embodiment, according to influent quality and water situation, fluorine removing filter need to be carried out periodically anti-
It washes and regenerates, anti-scouring water is raw water, is intake from filter top, and bottom backwash tube water outlet, regenerated liquid uses clear water or turbidity
The aluminum sulfate solution that lower raw water is prepared, is delivered in filter by regeneration pump from filter bottom, until by filter
It is full of and recycles 15 minutes, then stop regeneration pump and close regeneration motor-driven valve, filtrate is impregnated, is emptied after the completion of impregnating
And rinse, normal use is then put into, the electric butterfly valve on fluorine removing filter, which is opened and closed, is required to certain time, 15 seconds left sides
The right side in regular job it is ensured that after it fully opens or close, then carries out next step operation, motor-driven valve automatic mode and manually
Mode forbids opening simultaneously, and when regeneration, regenerated liquid is injected into filter, first opens respective filter and regenerates motor-driven valve, after open
Dynamic regeneration pump, after having infused regenerating tank medical fluid, filter is less than, need to continue to fill, first stop regeneration pump, and rear closing regeneration is electronic
Valve when being vented to filter, to guarantee to empty completely, should start emptying motor-driven valve, and open sampling valve；Backwash water
Backwash liquor storage pool is drained into regenerated liquid, after natural sedimentation, base sludge is delivered to sludge-tank by sludge pump, on
Clear liquid is promoted to flocculation sedimentation equipment by supernatant liquid pump；Add calcium chloride, polymerization chlorine respectively into flocculation sedimentation equipment simultaneously
Change aluminium flocculating agent PAC and polyacrylamide flocculant PAM, it is solid that calcium chloride can form calcirm-fluoride with high-content fluoride in water
Body, PAC and PAM effectively can carry out flocculation sedimentation to suspended matter in water and solid, and mixed liquor is after inclined-tube sedimentation tank, bottom
Sludge is delivered to sludge-tank by sludge pump, and supernatant overflow to clear water reserviors is back to conditioning tank through fresh water pump.
In an alternative embodiment, raw water is promoted to integrated flocculation sedimentation equipment, is passed through in integration apparatus
It crosses and adds drug and four stirrings three times, add calcium chloride for the first time, the revolving speed of blender is controlled in 60-80r/min, time
10-15min, adds flocculant of polymeric aluminium chloride PAC for the second time, and blender is the revolving speed control of two-stage revolving speed, first order blender
System is controlled in 15-30r/min, mixing time 5-10min, the revolving speed of second level blender in 8-15r/min, time 10-
15min, the revolving speed for adding polyacrylamide flocculant PAM blender for the third time are controlled in 5-10r/min, time 10-15min.
In an optional example, raw water is promoted to by pH conditioning tank by variable-frequency delivery pump, passes through supersonic liquid level
Meter control frequency, when adjusting pool water level is higher than design ordinary water level 0.5m lower than 0.5m or pH adjusting pool water level, out of service, pH
Pool water level is adjusted lower than peak level and when being higher than design ordinary water level, the low frequency operation of 10Hz is carried out, is lower than normal design
When water level, the oepration at full load of 50Hz is carried out.
In an alternative embodiment, raw water is forced into fluorine removing filter after adjusting pH by frequency conversion intake pump, leads to
Constant pressure water supply power distribution cabinet control frequency is crossed, after setting operating pressure, by main pipeline distance-transmission pressure gauge feedback signal, lower than setting
When pressure, frequency is increased up to actual pressure is equal to and sets pressure, when First water pump expires frequency run and is unsatisfactory for pressure,
Automatically start second water pump and gradually rise frequency, and so on.
In an alternative embodiment, the pH value preset range of waste water is 6.5-7.0 in pH conditioning tank, passes through metering pump
The concentrated sulfuric acid is added into pipe-line mixer, raw water pH is adjusted, is monitored by online pH meter, after starting metering pump, when pond original
When water pH is higher than 7.0, it is automatically added to sulfuric acid, when pond pH is lower than 6.5, metering pump is automatically stopped operation.
In an optional example, flocculation sedimentation equipment handles waste water in backwash liquor storage pool, when water level in water pool is higher than
When 2m, supernatant liquid pump will start automatically, and subsequent relevant device will also start automatically, and subsequent relevant device includes flocculation sedimentation equipment
On calcium salt blender, 3 flocculation stirring devices, calcium chloride metering pump, PAC metering pump and PAC jar agitator, will be in backwash pond
Supernatant carries out precipitation process, and when backwash liquor storage pool water level is lower than 2m, supernatant liquid pump is automatically stopped, above-mentioned relevant device
It is simultaneously stopped operation, when inspection should be noted that supernatant liquid pump state, and the attached fresh water pump of flocculation apparatus passes through floating-ball level switch and controls
Start and stop, high liquid level start automatically, clear water are delivered to conditioning tank, low liquid level is automatically stopped.
In an alternative embodiment, flocculation sedimentation equipment at runtime, every 4 hours manually opened spoil disposals 1 of sludge pump
Hour, backwash liquor storage pool sludge pump is filtered according to the on-demand spoil disposal of basin bottom sludge quantity if backwash pond liquid level is higher simultaneously
Device needs backwash to drain, and backwash water can be drained into sludge-tank with sludge pump, reduce backwash pond liquid level height.
In an alternative embodiment, fluorine removing filter is clicked respective keys on motor-driven valve control panel and is entered accordingly
Operating status needs backwash when intake pressure increases and water flow reduces, and when influent quality is normal, is discharged still after backwash
When not up to standard, need to regenerate.
In an alternative embodiment, Con trolling index of the invention and technical parameter have:
1, water inlet requires: 1. fluorinated volume≤5mg/L, 2. turbidity≤20NTU, and turbidity is excessively high to block filtrate hole, influences
Defluorination effect, 3. pH value is 6.5-7.0, and pH value is excessively high to will affect defluorination effect, 4. ferromanganese ion content≤0.3mg/L, ferrimanganic
Ion concentration is excessively high to block filtrate hole, cause oxidation poisoning by aluminum, seriously affect life-span of filtering material.
2, working environment parameter: main pipeline pressure≤0.1Mpa, water pump discharge pressure≤0.25Mpa, operating temperature≤40
DEG C, particle diameter of filter medium is within the scope of 1.0-3.0mm, and the rate of filtration is within the scope of 2-10m/h, and pH value and filtrate filter diameter are bigger, filtering velocity
Lower, the cycle of operation need to be depending on raw water quality, and backwash mode is rinsed using raw water, and the backwash time is 10-15min, after regeneration
Washing time 20-30min, for backwash intensity within the scope of 18-25L/sm2, regenerated liquid is using 5%-7% aluminum sulfate, and again
The raw time is 3-4h, regenerates intensity within the scope of 8-10L/sm2, and calcium chloride is the calcium chloride solution for selecting 2%, and PAC is choosing
With 2% polymeric aluminum chlorides solution, PAM is the polyacrylamide solution for selecting 0.3%.
Use case
Certain waste-water treatment industry is the waste water treatment process of embodiment to coal gasification fluoride waste and change using the present invention
The chemical plant Fei Chang fluoride waste is handled, by table Fig. 7 it is found that the content of fluoride when processing is discharged and turbidity are than water inlet
It is low, therefore present invention process using add calcium chloride generate calcium fluoride precipitate, the solubility of calcirm-fluoride Yu Shuizhong at 18 DEG C
For 16.3mg/L, it is 7.9mg/L by fluorine ionometer, will form sediment in the calcirm-fluoride of this solubility.The residual quantity of fluorine is 10-
The speed that sediment is formed when 20mg/L can slow down.When containing a certain number of salts in water, such as sodium chloride, sodium sulphate, chlorination
When ammonium, it will increase the solubility of calcirm-fluoride.Therefore 20- is generally not less than with the fluorine in wastewater content after lime treatment
For 30mg/L, it can be achieved that greatly strengthening the flexibility of technique, operating automation degree is high, simple and convenient, especially for space bit
It is equipped with limit and improvement project is especially suitable, integration pretreatment flocculation sedimentation equipment can change and adjust at any time according to demand
It is whole, switched into when having demand operation working condition, without demand when can switch stop working reduction and reduce operation at
This, and integration pretreatment flocculation sedimentation equipment can have high practicability with the vehicle-mounted or a certain clear position of lifting
And flexibility.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of coal gasification and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that the technique the following steps are included:
Step S11, the on-line monitoring of waste water and processing: waste water initially enters on-line detector, when on-line detector detects institute
When stating the fluorinated volume of waste water and being less than or equal to threshold value, the waste water is directly entered conditioning tank, when on-line detector detect it is described
When the fluorinated volume of waste water is greater than the threshold value, the waste water enters integrated flocculation sedimentation equipment, handles by integration apparatus
After enter back into conditioning tank；
Step S12, the homogeneous of waste water, amount and pH are adjusted: after being carried out homogeneous to waste water by conditioning tank and being measured, being delivered to pH tune
Pond is saved, adjusts the pH value of the waste water to preset range；
Step S13, the fluorine removal processing of waste water: waste water in pH conditioning tank is delivered to surge tank, then enters fluorine-filtering from bottom
Device, the bottom of the fluorine removing filter are provided with strainer and/or quartz sand, are provided with above the strainer and/or quartz sand
Active oxidation Al filler, discharge after the content of fluoride of waste water is up to standard.
2. a kind of coal gasification according to claim 1 and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that described
Technique further include:
Step S21, the backwash and regeneration of fluorine removing filter: backwash water is intake from the top of fluorine removing filter, bottom backwash tube
Water outlet carries out backwash to the fluorine removing filter, regenerated liquid is delivered in the fluorine removing filter from fluorine removing filter bottom,
Until the fluorine removing filter is full of, filtrate is impregnated, empties and rinses after the completion of impregnating, is completed to the fluorine removal mistake
The regeneration of filter；
Step S22, the natural sedimentation processing of backwash water and regenerated liquid: backwash water or regenerated liquid are drained into backwash liquor storage pool, passed through
After crossing natural sedimentation, base sludge is delivered to sludge-tank, and supernatant is delivered to flocculation sedimentation equipment；
Step S23, the flocculation treatment of waste water: adding calcium ions solution and flocculant into flocculation sedimentation equipment respectively, mixing
After precipitation, base sludge is delivered to sludge-tank to liquid, and supernatant is delivered to conditioning tank.
3. a kind of coal gasification according to claim 1 and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that described
In step S11, the waste water enters integrated flocculation sedimentation equipment, includes: by integration apparatus processing
Calcium ions solution is added into the integrated flocculation sedimentation equipment, and is stirred, wherein the revolving speed of blender is 60-
80r/min, mixing time 10-15min；
Flocculant of polymeric aluminium chloride PAC is added into the integrated flocculation sedimentation equipment, and is stirred, blender turns for two-stage
Speed, wherein the revolving speed of first order blender is 15-30r/min, mixing time 5-10min, and the revolving speed of second level blender is
8-15r/min, time 10-15min；
Polyacrylamide flocculant PAM is added into the integrated flocculation sedimentation equipment, and is stirred, the revolving speed of blender is 5-
10r/min, mixing time 10-15min.
4. a kind of coal gasification according to claim 1 and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that described
In step S12, after being carried out homogeneous to waste water by conditioning tank and being measured, being delivered to pH conditioning tank includes: to be incited somebody to action by variable-frequency delivery pump
Waste water is delivered to pH conditioning tank, and the water level of conditioning tank and pH conditioning tank is detected by ultrasonic level gage, and controls the frequency conversion
The working frequency of delivery pump, wherein adjust pool water level higher than design ordinary water level 0.5m lower than 0.5m or pH when adjusting pool water level
When, the variable-frequency delivery pump is out of service, is not less than 0.5m when adjusting pool water level, pH adjusts pool water level and is lower than peak level and height
When designing ordinary water level, the variable-frequency delivery pump carries out the low frequency operation of 10Hz, is not less than 0.5m, pH when adjusting pool water level
When adjusting pool water level lower than normal design water level, the variable-frequency delivery pump carries out the oepration at full load of 50Hz.
5. a kind of coal gasification according to claim 1 and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that described
In step S13, waste water in pH conditioning tank is delivered to surge tank, then from bottom enter fluorine removing filter include: by frequency conversion into
Waste water is forced into fluorine removing filter after water pump will adjust pH, and the work of the frequency conversion intake pump is controlled by constant pressure water supply power distribution cabinet
Frequency, after setting operating pressure, by main pipeline distance-transmission pressure gauge feedback signal, when pressure gauge feedback signal is lower than setting pressure
When, increase the frequency conversion intake pump working frequency until actual pressure be equal to setting the operating pressure, the frequency conversion into
Water pump includes at least one, when First frequency conversion intake pump expires frequency run and is unsatisfactory for pressure, starts second water automatically
Frequency is pumped and gradually rises, and so on.
6. a kind of coal gasification according to claim 1 and chemical fertilizer factory's fluoride wastewater treatment technique, it is characterised in that: described
In step S12, homogeneous is carried out to waste water by conditioning tank and after amount, is delivered to pH conditioning tank, adjust the pH value of the waste water to
Preset range includes: acid solution or lye to be added to pipe-line mixer by metering pump, and monitor pH conditioning tank by online pH meter
The pH value of middle waste water, when the pH value of waste water in pH conditioning tank reaches the preset range, metering pump is automatically stopped operation.
7. a kind of coal gasification according to claim 2 and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that described
In step S22, it includes: that supernatant is delivered to flocculation sedimentation by supernatant liquid pump to set that supernatant, which is delivered to flocculation sedimentation equipment,
It is standby, wherein when the water level of the backwash liquor storage pool is higher than preset water level value, the supernatant liquid pump starts automatically, wads a quilt with cotton simultaneously
Solidifying settling apparatus starts automatically, when the water level of the backwash liquor storage pool is lower than the preset water level value, the supernatant liquid pump
It is automatically stopped operation, while flocculation sedimentation equipment is automatically stopped operation.
8. a kind of coal gasification according to claim 2 and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that described
In step S23, it includes: that base sludge is delivered to sludge-tank by sludge pump that base sludge, which is delivered to sludge-tank, wherein described
Sludge pump starts spoil disposal by predetermined period.
9. a kind of coal gasification according to claim 1 and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that pass through
The operating status of motor-driven valve control panel setting fluorine removing filter, wherein, will when intake pressure increases or water flow reduces
The fluorine removing filter is set as backwash mode, when influent quality is normal, when being discharged still not up to standard after backwash, by the fluorine removal mistake
Filter is set as regeneration mode.
10. a kind of coal gasification according to claim 1 and chemical fertilizer factory's fluoride wastewater treatment technique, which is characterized in that when
When on-line detector detects that the fluorinated volume of the waste water is greater than the threshold value, the waste water enters integrated flocculation sedimentation equipment
Before, the technique further include: the waste water is delivered to cache pool, active carbon is added in Xiang Suoshu cache pool and carries out at absorption
Reason.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111302527A (en) * | 2020-02-21 | 2020-06-19 | 宁夏水投环保发展有限公司 | Novel corridor type treatment process and operation method for coal gasification fluorine-containing wastewater |
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Application publication date: 20190816 |