CN110104840A - A kind for the treatment of process for waste water advanced defluorinate - Google Patents
A kind for the treatment of process for waste water advanced defluorinate Download PDFInfo
- Publication number
- CN110104840A CN110104840A CN201910480085.0A CN201910480085A CN110104840A CN 110104840 A CN110104840 A CN 110104840A CN 201910480085 A CN201910480085 A CN 201910480085A CN 110104840 A CN110104840 A CN 110104840A
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- China
- Prior art keywords
- defluorinate
- waste water
- complexing
- treatment process
- 60min
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F1/28—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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
-
- 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
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- 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)
- Removal Of Specific Substances (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind for the treatment of process for waste water advanced defluorinate, the technique first adds defluorinating agent into waste water, enter immersion ultrafiltration system separated sludge and waste water after carrying out pre- defluorinate, waste water enters complexing defluorinate system processing, and final outflow water fluorine ion is reduced to 1mg/L or less；The technique is by combining pre- defluorinate processing system and complexing defluorinate system, realize the target of depth removal fluoride, fluorine ion can be reduced to 1mg/l or less, using immersion ultra-filtration and separation sludge and waste water, improve the residence time of sludge, the time of contact for improving alumine hydroxide colloid particle and fluorine ion, effectively improve fluoride removal rate.
Description
Technical field
The invention belongs to sewage advanced treatment field more particularly to a kind for the treatment of process for waste water advanced defluorinate.
Background technique
Fluorine is one of the essential trace elements of the human body, but when fluorine content is higher than 1 mg/L in water, then can cause den tal fluorosis
Disease, if long-term drinking content is higher than 4 mg/L water and can cause fluorosis of bone.Therefore, in order to guarantee that water quality safety and the mankind are strong
Health need to carry out depth fluorine removal processing to more than 1 mg/L fluorinated water.
The processing method of fluoride waste mainly has calcium salt precipitation method, coagulant sedimentation, absorption method, electroosmose process and reverse osmosis
Saturating method, wherein electroosmose process and hyperfiltration are due to the higher and rare application of processing cost.Calcium salt precipitation method uses and adds CaCl2
Or Ca(OH)2Ca is provided2+With F-Reaction generates the CaF of indissoluble2Precipitating removal F-, due to calcirm-fluoride in 18 DEG C of water solution degree
For 16 mg/L, it is converted into F-Concentration is 7.9 mg/L, while often containing a certain amount of salt in waste water, such as sodium sulphate and chlorine
Change sodium etc., the presence of these salts can further increase the solubility of calcirm-fluoride, it is difficult to meet fluorine content and want lower than 1 mg/L
It asks, for absorption method since adsorbent material adsorption capacity is low, the cycle of operation is short, while high investment, therefore lacks effective depth fluorine removal
Method.
Summary of the invention
In view of the above-mentioned problems, the technique will be pre- de- the present invention provides a kind for the treatment of process for waste water advanced defluorinate
Fluorine system system, immersion ultrafiltration system and depth fluorine removal system combine, and realize effectively removing for fluorine, and water outlet fluorine ion is reduced to
1mg/L or less.
To achieve this purpose, the present invention adopts the following technical scheme:
One kind being used for waste water advanced defluorinate treatment process, first adds defluorinating agent into the waste water, enters leaching after carrying out pre- defluorinate
Do not have formula ultrafiltration system separated sludge and waste water, waste water enters complexing defluorinate system processing, and final outflow water fluorine ion is reduced to 1mg/L
Below.
The defluorinating agent that the pre- defluorinate adds preferably is compounded through inorganic aluminum coagulant, calcium agent, organic polymer coargulator
It forms, dosage is 200 ~ 1000mg/L, and the reaction time is 20 ~ 60min.
The immersion ultrafiltration system residence time is 30 ~ 120min, and membrane flux is 30 ~ 60L/m2L, backwash frequency 15
~ 30min/ times, maintaining sludge concentration by spoil disposal is 2000 ~ 5000mg/L.
The complexing defluorinate system includes at least two sets of fixed bed systems, and one is regenerated with one；AL is loaded in the fixed bed
Type resin.
The complexing defluorinate retention time of sewage is 10 ~ 60min, and the regeneration period is 24 ~ 48h.
Regenerative agent is one of aluminum sulfate, alum or aluminium chloride or a variety of；Regeneration solution concentration is 5 ~ 15%, regenerant flow
For 5 ~ 10BV/h, the reproduction time is 60min ~ 120min.
The regeneration liquid waste that complexing defluorinate system regeneration generates is back to pre- defluorinate system and further utilizes regenerative agent.
Compared with prior art, the invention has the following advantages:
(1) the invention discloses a kind for the treatment of process for waste water advanced defluorinate, the technique is by by pre- defluorinate processing system
It is combined with complexing defluorinate system, realizes the target of depth removal fluoride, fluorine ion can be reduced to 1mg/l or less；
(2) the sludge main component generated in present treatment technique is alumine hydroxide colloid particle, has certain suction to fluorine ion
Attached effect improves the residence time of sludge using immersion ultra-filtration and separation sludge and waste water, i.e. raising alumine hydroxide colloid
The time of contact of grain and fluorine ion, effectively improve fluoride removal rate；
(3) AL type acid-basic regenerated waste liquids in water is fluorine-containing aluminum bearing waste, and regeneration liquid waste is recycled to pre- defluorinate system, on the one hand using useless
Remaining aluminum ions flocculation in liquid, while can remove the fluorine ion in regeneration liquid waste, discharging of waste liquid is avoided, is had simultaneously
Effect takes full advantage of regenerative agent.
Detailed description of the invention
Fig. 1 is the processing technological flow figure that the present invention is used for waste water advanced defluorinate.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, of the invention is typical but non-limiting
Embodiment it is as follows:
As shown in Figure 1, a kind of be used for waste water advanced defluorinate treatment process, defluorinating agent is first added into the waste water, is carried out pre- de-
Enter immersion ultrafiltration system separated sludge and waste water after fluorine, waste water enters complexing defluorinate system processing, final outflow water fluorine ion
It is reduced to 1mg/L or less.
The defluorinating agent that pre- defluorinate adds preferably is compounded through inorganic aluminum coagulant, calcium agent, organic polymer coargulator,
Dosage be 200 ~ 1000mg/L, 200 mg/L, 300 mg/L, 400 mg/L, 500 mg/L, 600 mg/L, 700 mg/L,
800 mg/L, 900 mg/L, 1000 mg/L, reaction time are 20 ~ 60min, 20min, 30min, 40min, 50min, 60min.
The immersion ultrafiltration system residence time be 30 ~ 120min, 30min, 40min, 50min, 60min, 70min,
80min, 90min, 100min, 110min, 120min, membrane flux be 30 ~ 60L/m2L, 30 L/m2L、40 L/m2L、50 L/
m2L、60 L/m2L, backwash frequency are 15 ~ 30min/ times, 15 min/ times, 16 min/ times, 17 min/ times, 18 min/ times, 19
Min/ times, 20 min/ times, 21 min/ times, 22 min/ times, 23 min/ times, 24 min/ times, 25 min/ times, 26 min/ times,
27 min/ times, 28 min/ times, 29 min/ times, 30 min/ times, maintaining sludge concentration by spoil disposal is 2000 ~ 5000mg/L,
2000mg/L、2100 mg/L、2200 mg/L、2300 mg/L、2400 mg/L、2500 mg/L、2600 mg/L、2800 mg/
L、3000 mg/L、3200 mg/L、3500 mg/L、3600 mg/L、3800 mg/L、4000 mg/L、4200 mg/L、4500
mg/L、4600 mg/L、48 mg/L、5000 mg/L。
It includes at least two sets of fixed bed systems that defluorinate system, which is complexed, and one is regenerated with one；AL type tree is loaded in the fixed bed
Rouge.
Complexing defluorinate retention time of sewage is 10 ~ 60min, and 10min, 20min, 30min, 40min, 50min, 60min are again
The raw period is 24 ~ 48h, for 24 hours, 25h, 26h, 28h, 30h, 31h, 32h, 33h, 35h, 38h, 40h, 42h, 44h, 46h, 48h.
Regenerative agent is one of aluminum sulfate, alum or aluminium chloride or a variety of；Regeneration solution concentration be 5 ~ 15%, 5%, 6%, 7%,
8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, regenerant flow be 5 ~ 10BV/h, 5 BV/h, 6 BV/h, 7 BV/h, 8 BV/h,
9 BV/h, 10 BV/h, the reproduction time be 60min ~ 120min, 60min, 70min, 80min, 90min, 100min, 110min,
120min。
The regeneration liquid waste that complexing defluorinate system regeneration generates is back to pre- defluorinate system and further utilizes regenerative agent.
Embodiment 1
It is 32mg/L that content of fluoride ion is drained outside certain iron and steel enterprise, and waste water initially enters pre- defluorinate system, and defluorinating agent KL108 is added
Amount is 300mg/L, reaction time 20min, immersion ultrafiltration residence time 60min, and membrane flux is 50L/m2 L, backwash frequency
It is 15min/ times, maintaining sludge concentration by spoil disposal is 2000mg/L, and it is 5.2mg/L that pre- defluorinate system, which produces water content of fluoride ion,
Pre- defluorinate produces water and enters complexing defluorinate system, and complexing defluorinate system includes two sets of fixed bed systems, and one is regenerated with one, in reactor
Al type resin is loaded, defluorinate retention time of sewage 20min is complexed, regeneration period 48h, regenerative agent is aluminum sulfate, and regenerated liquid is dense
Degree is 5%, and regenerant flow 10BV/h, reproduction time 60min, the regeneration liquid waste that resin regeneration generates are back to pre- defluorinate system
System further utilizes.
Embodiment 2
It is 95mg/L that content of fluoride ion is drained outside certain iron and steel enterprise, and waste water initially enters pre- defluorinate system, and defluorinating agent KL108 is added
Amount is 600mg/L, reaction time 30min, immersion ultrafiltration residence time 60min, and membrane flux is 40L/m2 L, backwash frequency
It is 20min/ times, maintaining sludge concentration by spoil disposal is 3000mg/L, and it is 6.3mg/L that pre- defluorinate system, which produces water content of fluoride ion,
Pre- defluorinate produces water and enters complexing defluorinate system, and complexing defluorinate system includes two sets of fixed bed systems, and one is regenerated with one, in reactor
Al type resin is loaded, defluorinate retention time of sewage 40min is complexed, regeneration period 36h, regenerative agent is aluminum sulfate, and regenerated liquid is dense
Degree is 10%, and regenerant flow 5BV/h, reproduction time 100min, the regeneration liquid waste that resin regeneration generates are back to pre- defluorinate system
System further utilizes.
Embodiment 3
It is 140mg/L that content of fluoride ion is drained outside certain iron and steel enterprise, and waste water initially enters pre- defluorinate system, and defluorinating agent KL108 is thrown
Dosage is 900mg/L, reaction time 100min, immersion ultrafiltration residence time 60min, and membrane flux is 30L/m2 L, backwash
Frequency is 30min/ times, and maintaining sludge concentration by spoil disposal is 2000mg/L, and pre- defluorinate system produces water content of fluoride ion and is
8.6mg/L, pre- defluorinate produce water and enter complexing defluorinate system, and complexing defluorinate system includes two sets of fixed bed systems, and one is regenerated with one,
Al type resin to be loaded in reactor, and defluorinate retention time of sewage 60min is complexed, the regeneration period is for 24 hours that regenerative agent is aluminum sulfate,
Regeneration solution concentration is 15%, regenerant flow 5BV/h, reproduction time 120min, and the regeneration liquid waste that resin regeneration generates is back to
Pre- defluorinate system further utilizes.
The Applicant declares that the present invention is explained by the above embodiments method detailed of the invention, but the present invention not office
Be limited to above-mentioned method detailed, that is, do not mean that the invention must rely on the above detailed methods to implement.Technical field
Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary element to each raw material of product of the present invention
Addition, selection of concrete mode etc., all of which fall within the scope of protection and disclosure of the present invention.
Claims (7)
1. one kind is used for waste water advanced defluorinate treatment process, which is characterized in that first add defluorinating agent into the waste water, carry out pre-
After defluorinate enter immersion ultrafiltration system separated sludge and waste water, waste water enter complexing defluorinate system processing, final outflow water fluorine from
Son is reduced to 1mg/L or less.
2. treatment process as described in claim 1, which is characterized in that the defluorinating agent that the pre- defluorinate adds is preferably through inorganic
Aluminium coagulant, calcium agent, organic polymer coargulator compound, dosage be 200 ~ 1000mg/L, the reaction time be 20 ~
60min。
3. treatment process as described in claim 1, which is characterized in that the immersion ultrafiltration system residence time be 30 ~
120min, membrane flux are 30 ~ 60L/m2L, backwash frequency are 15 ~ 30min/ time, by spoil disposal maintain sludge concentration for 2000 ~
5000mg/L。
4. treatment process as described in claim 1, which is characterized in that the complexing defluorinate system includes at least two sets of fixed beds
System, one is regenerated with one；AL type resin is loaded in the fixed bed.
5. treatment process as claimed in claim 4, which is characterized in that the complexing defluorinate retention time of sewage be 10 ~
60min, regeneration period are 24 ~ 48h.
6. treatment process as claimed in claim 5, which is characterized in that regenerative agent is one in aluminum sulfate, alum or aluminium chloride
Kind is a variety of；Regeneration solution concentration is 5 ~ 15%, and regenerant flow is 5 ~ 10BV/h, and the reproduction time is 60min ~ 120min.
7. the treatment process as described in any claim in claim 1-6, which is characterized in that complexing defluorinate system regeneration produces
Raw regeneration liquid waste is back to pre- defluorinate system and further utilizes regenerative agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910480085.0A CN110104840A (en) | 2019-06-04 | 2019-06-04 | A kind for the treatment of process for waste water advanced defluorinate |
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| CN201910480085.0A CN110104840A (en) | 2019-06-04 | 2019-06-04 | A kind for the treatment of process for waste water advanced defluorinate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679030A (en) * | 2019-10-18 | 2021-04-20 | 中国石油化工股份有限公司 | Method and device for treating coal gasification low-fluorine-containing sewage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208327647U (en) * | 2018-09-26 | 2019-01-04 | 高频美特利环境科技（北京）有限公司 | A kind of sewage disposal system of advanced treating fluoride waste |
| CN208791354U (en) * | 2018-08-01 | 2019-04-26 | 苏州崇越工程有限公司 | The equipment for reducing waste water fluorinion concentration |
-
2019
- 2019-06-04 CN CN201910480085.0A patent/CN110104840A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208791354U (en) * | 2018-08-01 | 2019-04-26 | 苏州崇越工程有限公司 | The equipment for reducing waste water fluorinion concentration |
| CN208327647U (en) * | 2018-09-26 | 2019-01-04 | 高频美特利环境科技（北京）有限公司 | A kind of sewage disposal system of advanced treating fluoride waste |
Non-Patent Citations (1)
| Title |
|---|
| 王罗春等: "《农村饮用水安全保障》", 31 January 2018, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679030A (en) * | 2019-10-18 | 2021-04-20 | 中国石油化工股份有限公司 | Method and device for treating coal gasification low-fluorine-containing sewage |
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