CN102616966B - Device and method for groundwater defluorination - Google Patents
Device and method for groundwater defluorination Download PDFInfo
- Publication number
- CN102616966B CN102616966B CN 201210102971 CN201210102971A CN102616966B CN 102616966 B CN102616966 B CN 102616966B CN 201210102971 CN201210102971 CN 201210102971 CN 201210102971 A CN201210102971 A CN 201210102971A CN 102616966 B CN102616966 B CN 102616966B
- Authority
- CN
- China
- Prior art keywords
- water
- unit
- hydroxyapatite
- filtering
- removal
- 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.)
- Active
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a device and a method for groundwater defluorination . The device sequentially comprises a water inlet unit, a clarifying unit and a filtering unit from bottom to top, wherein the water inlet unit comprises a water inlet pipe, a coagulating agent dosing port, a powder hydroxyapatite dosing port and a water distribution device; all reagents and raw water are fully mixed in the water distribution device; a suspended sludge layer is arranged in the clarifying unit, and a sludge discharge port is arranged at the upper part of the suspended sludge area; and a filtering material is filled in the filtering unit. The raw material, a coagulating agent and powder hydroxyapatite are respectively dosed into the water distribution device of the water inlet unit via the water inlet pipe, the coagulating agent dosing port and the powder hydroxyapatite dosing port, mixed, then driven to go upwards, input into the clarifying unit, further conveyed to the filtering unit from a filter plate at the top after being clarified by the suspended sludge layer of the clarifying unit and discharged from a water outlet after being filtered by the filtering material of the filtering unit, and the residual sludge is discharged by the sludge discharge port. According to the device and the method disclosed by the invention, fluoride ions in groundwater can be economically, effectively and safely removed, the water quality needs not to be regulated again, the process is simple, and the water quality of outlet water is ensured.
Description
Technical field
The present invention relates to a kind of device or method based on fluorion in the removal underground water of powder hydroxyapatite.
Background technology
Fluorosis is ubiquitous endemy in world wide, and the tap water important absorption approach that is it.China is one of fluoride pollution the most serious country in the world, and except Shanghai City, all there is distribution national each province, relates to nearly hundred million people of population.For the water quality characteristics of underground water, the research and development defluorination method is one of focus of present drinking water treatment industry concern.
The main technology of Fluoride Removal that forms both at home and abroad at present mainly comprises coagulation sedimentation, activated alumina absorption method, electroosmose process, reverse osmosis method, ion exchange method, absorption method, bone black absorption, zeolite defluorination method etc., but all there is certain problem in various technology in actual application, it is applied have certain difficulty.Also another field of strengthening defluorination research for the research and development of defluorination material, comprising: the modification on existing sorbent material basis, compound; The research and development of novel defluorination material; The research and development of nano adsorption material etc.
Hydroxyapatite is used to the processing material of Removal of Fluorine From Underground Water in the recent period, and obtains effect preferably.In addition because material itself does not have toxic action, and have higher defluorination capacity, more than generally can reaching 30mg/g, thereby be subject to extensive concern.But the powdery hydroxyapatite is more difficult recycling and reusing in the process of processing underground water, thereby defluorination capacity utilization ratio is lower; Recent research improves for the problem that the powdery hydroxyapatite exists, developed the form of spherical particles filtrate on the basis of powder-material, thereby can use the form of using filter post or filter tank, part has solved the problem of the more difficult recycling of powdery hydroxyapatite.But because particle diameter of filter medium is relatively large, the travelling speed of fluorion in filtrate is slower, needs in use for some time to carry out complicated step for regeneration, and economy is also not obvious.The defluorination capacity that how to facilitate, take full advantage of economically hydroxyapatite becomes one of its bottleneck of applying of restriction.
Summary of the invention
The problem that exists in order to overcome existing technology of Fluoride Removal take hydroxyapatite as body material the object of the present invention is to provide a kind of Removal of Fluorine From Underground Water device based on the powdery hydroxyapatite, has significantly improved the effect of defluorination, and working cost is low.
Another object of the present invention is to provide a kind of removing flurine from underground water based on the powdery hydroxyapatite, defluorination respond well.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of Removal of Fluorine From Underground Water device comprises from bottom to up successively: water inlet unit, clarification unit, filtering unit.Three parts organically combine common the realization efficient economy of fluorion in underground water are removed, and the water quality of ensuring equipment water outlet.
The water inlet unit comprises: water inlet pipe, coagulant dosage mouth, powder hydroxyapatite add mouth and water-distributing device.Each reagent and former water fully mix in water-distributing device;
Coagulating agent is selected Al-based coagulant, and as polymerize aluminum chloride, Tai-Ace S 150, dosage is controlled between 5-20mg/L.The Main Function of coagulant dosage is with the effectively cohesion of powder hydroxyapatite, and the removal of fluorion is only its subsidiary effect, and this is different from the effect of coagulating agent in the coagulating sedimentation method for removing fluor.
Hydroxyapatite can be selected hydroxyapatite natural or synthetic, size adopts micron-sized or small particle size more, thereby have higher defluorination capacity, and the fluorion transition process of absorption is very fast, can take full advantage of its defluorination capacity within shorter duration of contact; It is definite that dosage is removed fluorion quantity according to need, generally between 80 ~ 200mg/L.
The suspension slime layer of clarification unit mainly is comprised of the flco that coagulating agent and hydroxyapatite powder form, and the body refuse outlet is set on top, body refuse district be used for gets rid of top to the fluorion body refuse of removal effect not, guarantee that slime layer thickness is stabilized in 0.8～1.2m left and right.The common removal that realizes fluorion of hydroxyapatite powder in the suspension slime layer and coagulating agent hydrolysate, and the height by slime layer guarantees duration of contact of reacting required.
The filtrate of filling in filtering unit adopts the quartz sand graduation filtrate, and particle size range is 0.5～1.0mm, and effective size of grain d10 is 0.8mm, non-homogeneous coefficient K80 is 1.3, filtrate thickness is more than 0.8m, and employing upward flow filtration mode, and filtering velocity is controlled between 8～12m/h.
A kind of method of removing the underground water fluorion, it is characterized in that: it is up after the water-distributing device mixing of water inlet unit that former water, coagulating agent, powder hydroxyapatite add mouth through water inlet pipe, coagulant dosage mouth, powder hydroxyapatite respectively, and the unit is clarified in input; Transport to filtering unit from the top filter plate in the clarification unit after suspension slime layer clarification, the body refuse outlet is used for keeping settling pond slime layer thickness stable; Discharge from water outlet after media filtration at filtering unit.
The method of aforesaid removal underground water fluorion is characterized in that selecting Al-based coagulant into the coagulating agent of water unit, and dosage is controlled between 5-20mg/L; Hydroxyapatite can be selected hydroxyapatite natural or synthetic, and size adopts micron order or nano level, and dosage is removed fluorion quantity according to need and determined.
The method of aforesaid removal underground water fluorion is characterized in that the suspension slime layer of clarifying the unit mainly is comprised of the flco that coagulating agent and hydroxyapatite powder form, and thickness is at 0.8～1.2m.
The method of aforesaid removal underground water fluorion is characterized in that the filtrate of filtering unit adopts the grating quartz sand filter media; Particle size range is 0.5～1.0mm, and effective size of grain d10 is 0.8mm, and non-homogeneous coefficient K80 is 1.3, and filtrate thickness is more than 0.8m, and filtering velocity is controlled between 8～12m/h.
The present invention has following characteristics:
(1) adopt the form of suspending clarification body refuse, utilize make a return journey fluorion in dewatering of the synergy of coagulating agent and nontoxic powder hydroxyapatite, utilize at last the upward flow filtration mode to hold back remaining powder hydroxyapatite and small flco, substantially there is no the considerable change of water quality in treating processes, need not readjust water quality after processing, technique is simple, and effluent quality is secure;
(2) economical, remove fluorion in underground water effectively, safely.The water treatment that the fluorion starting point concentration is 5mg/L is considered to national water quality standard, and its actual running cost is about 0.5～0.8 yuan/m
3, ton water cost of investment is between 200 yuan-400 yuan.
(3) take the practical situation of engineering in conjunction with present underground water, this device can be designed to operation scheme with pressure, conveniently is connected with the outlet of underground water well water pump, water supply network entrance.
Description of drawings
Fig. 1 is the schematic diagram of Removal of Fluorine From Underground Water device of the present invention;
Wherein: 1-water inlet unit, 2-clarification unit, 3-filtering unit, 11-water-in, 12-coagulant dosage mouth, 13-hydroxyapatite add mouth, 14-water-distributing device, 21-suspension slime layer, 22-body refuse outlet, 31-filtrate, 33-timing vent valve, 34-flange.
Embodiment 1
With reference to shown in Figure 1, a kind of Removal of Fluorine From Underground Water device based on the powder hydroxyapatite comprises into the water unit 1, clarification unit 2, filtering unit 3 from bottom to top successively.
The water inlet unit comprises: water-in 11, coagulant dosage mouth 12, powder hydroxyapatite add mouth 13 and water-distributing device 14.Coagulating agent, powder hydroxyapatite, former water fully mix in water-distributing device; Coagulating agent is selected Al-based coagulant, and dosage is controlled between 5-20mg/L.
The flco that the suspension slime layer 21 of clarification unit 2 is mainly formed by coagulating agent and hydroxyapatite powder forms, and body refuse outlet 22 is set on top, body refuse district is used for getting rid of top to the fluorion body refuse of removal effect not, guarantee that slime layer thickness is stabilized in 0.8～1.2m left and right.The common removal that realizes fluorion of hydroxyapatite powder in the suspension slime layer and coagulating agent hydrolysate, and the height by slime layer guarantees duration of contact of reacting required.
The filtrate 31 of filling in filtering unit 3 adopts the grating quartz sand filter media, and particle size range is 0.5～1.0mm, and effective size of grain d10 is 0.8mm, non-homogeneous coefficient K80 is 1.3, filtrate thickness is more than 0.8m, and employing upward flow filtration mode, and filtering velocity is controlled between 8～12m/h.The filter plate of filtering unit adopts flange 34 to be fixed on the device inboard, and the top of filtering unit arranges regularly vent valve 33.
Embodiment 1
Coagulating agent adopts Tai-Ace S 150, and dosage is selected 20mg/L; Hydroxyapatite adopts micron powder, and dosage adopts 80mg/L; Suspension slime layer thickness adopts 0.8m; Quartz sand adopts the grating quartz sand filter media, and effective size of grain d10 is 0.8mm, and non-homogeneous coefficient K80 is 1.3, and filtrate thickness is at 0.8m, filtering velocity 10m/h.Underground water fluorion starting point concentration is 5 mg/L, and device water outlet fluorinion concentration is reduced to 0.8 mg/L.
Embodiment 2
Coagulating agent adopts Tai-Ace S 150, and dosage is selected 10 mg/L; Hydroxyapatite adopts micron powder, and dosage adopts 100mg/L; Suspension slime layer thickness adopts 1.0m; Quartz sand adopts the grating quartz sand filter media, and effective size of grain d10 is 0.8mm, and non-homogeneous coefficient K80 is 1.3, and filtrate thickness is at 1.0m, filtering velocity 8m/h.Underground water fluorion starting point concentration is 3.6mg/L, and device water outlet fluorinion concentration is reduced to 0.7 mg/L.
Embodiment 3
Coagulating agent adopts polymerize aluminum chloride, and dosage is selected 5mg/L; Hydroxyapatite adopts micron powder, and dosage adopts 200mg/L; Suspension slime layer thickness adopts 1.2m; Quartz sand adopts the grating quartz sand filter media, and effective size of grain d10 is 0.8mm, and non-homogeneous coefficient K80 is 1.3, and filtrate thickness is at 1.2m, filtering velocity 12m/h.Underground water fluorion starting point concentration is 4.0mg/L, and device water outlet fluorinion concentration is reduced to 0.53 mg/L.
Embodiment 1-3 filter tank water outlet enters water supply network, water quality situation such as table 1 after sterilization.
The water quality situation of table 1 after processing based on the removing flurine from underground water of hydroxyapatite
| The embodiment numbering | 1 | 2 | 3 |
| Fluorion starting point concentration (mg/L) | 5.1 | 4.8 | 4.5 |
| Fluorinion concentration in water outlet (mg/L) | 0.80 | 0.7 | 0.53 |
As can be seen from Table 1, after method involved in the present invention is processed, can effectively reduce content of fluoride ion in underground water, in water outlet, content of fluoride ion can be reduced to below 1 mg/L.
Claims (8)
1. Removal of Fluorine From Underground Water device is characterized in that comprising successively from bottom to up: water inlet unit, clarification unit, filtering unit; The water inlet unit comprises that water inlet pipe, coagulant dosage mouth, powder hydroxyapatite add mouth and water-distributing device; Each reagent and former water fully mix in water-distributing device; Clarification arranges the suspension slime layer in the unit, on top, suspension body refuse district, the body refuse outlet is set; Fill the quartz sand graduation filtrate in filtering unit.
2. Removal of Fluorine From Underground Water device according to claim 1 is characterized in that into the coagulating agent of water unit be Al-based coagulant, dosage 5-20mg/L; Hydroxyapatite is hydroxyapatite natural or synthetic, and size adopts micron order or nano level, and dosage is removed fluorion quantity according to need and determined.
3. Removal of Fluorine From Underground Water device according to claim 1, is characterized in that the suspension slime layer of clarifying the unit is comprised of the flco that coagulating agent and hydroxyapatite powder form, and thickness is at 0.8～1.2m.
4. Removal of Fluorine From Underground Water device according to claim 1, is characterized in that the filtrate of filtering unit adopts the grating quartz sand filter media; Particle size range is 0.5～1.0mm, and effective size of grain is 0.8mm, and nonuniformity coefficient is 1.3, and filtrate thickness is more than 0.8m, and filtering velocity is controlled between 8～12m/h.
5. method of removing the underground water fluorion, it is characterized in that: it is up after the water-distributing device mixing of water inlet unit that former water, coagulating agent, powder hydroxyapatite add mouth through water inlet pipe, coagulant dosage mouth, powder hydroxyapatite respectively, and the unit is clarified in input; Transport to filtering unit from the top filter plate in the clarification unit after suspension slime layer clarification; Discharge from water outlet after media filtration at filtering unit.
6. the method for removal underground water fluorion according to claim 5 is characterized in that selecting Al-based coagulant into the coagulating agent of water unit, and dosage is controlled between 5-20mg/L; Hydroxyapatite is selected hydroxyapatite natural or synthetic, and size adopts micron order or nano level, and dosage is removed fluorion quantity according to need and determined.
7. the method for removal underground water fluorion according to claim 5, is characterized in that the suspension slime layer of clarifying the unit mainly is comprised of the flco that coagulating agent and hydroxyapatite powder form, and thickness is at 0.8～1.2m.
8. the method for removal underground water fluorion according to claim 5, is characterized in that the filtrate of filtering unit adopts the grating quartz sand filter media; Particle size range is 0.5～1.0mm, and effective size of grain d10 is 0.8mm, and non-homogeneous coefficient K80 is 1.3, and filtrate thickness is more than 0.8m, and filtering velocity is controlled between 8～12m/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210102971 CN102616966B (en) | 2012-04-09 | 2012-04-09 | Device and method for groundwater defluorination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210102971 CN102616966B (en) | 2012-04-09 | 2012-04-09 | Device and method for groundwater defluorination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102616966A CN102616966A (en) | 2012-08-01 |
| CN102616966B true CN102616966B (en) | 2013-06-05 |
Family
ID=46557248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210102971 Active CN102616966B (en) | 2012-04-09 | 2012-04-09 | Device and method for groundwater defluorination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102616966B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058419B (en) * | 2013-01-18 | 2014-05-28 | 江苏永冠给排水设备有限公司 | Defluorination process for drinking water |
| CN103880134B (en) * | 2014-03-14 | 2016-06-15 | 河海大学 | A kind of novel all-in-one Removal of Fluorine From Underground Water device |
| CN104045180A (en) * | 2014-05-08 | 2014-09-17 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Drinking water defluorinating method and device |
| CN104386857B (en) * | 2014-11-18 | 2017-01-11 | 江苏永冠给排水设备有限公司 | Complex drinking water fluorine removing process |
| CN104386859B (en) * | 2014-12-02 | 2016-06-08 | 河海大学 | A kind of Removal of Fluorine From Underground Water device based on magnetic hydroxylapatite |
| CN104399426B (en) * | 2014-12-08 | 2017-04-26 | 中国矿业大学 | Production method of aluminum-doped hydroxyapatite defluorinating filter material |
| CN113353903B (en) * | 2021-06-10 | 2024-02-09 | 暨南大学 | Preparation method of hydroxyapatite and constructed wetland system thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377841A (en) * | 2001-03-30 | 2002-11-06 | 中国科学院生态环境研究中心 | Method and device for removing flurine from underground water |
| CN101600656A (en) * | 2005-09-07 | 2009-12-09 | 阿夸蒂克处理系统公司 | From the aqueous solution, remove fluoride ion |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001259656A (en) * | 2000-03-16 | 2001-09-25 | Aquas Corp | Method for treating fluorine-containing waste water |
| WO2004024637A1 (en) * | 2002-09-13 | 2004-03-25 | North Carolina State University | Apparatus and method for removing phosphorus from waste lagoon effluent |
-
2012
- 2012-04-09 CN CN 201210102971 patent/CN102616966B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377841A (en) * | 2001-03-30 | 2002-11-06 | 中国科学院生态环境研究中心 | Method and device for removing flurine from underground water |
| CN101600656A (en) * | 2005-09-07 | 2009-12-09 | 阿夸蒂克处理系统公司 | From the aqueous solution, remove fluoride ion |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2001-259656A 2001.09.25 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102616966A (en) | 2012-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102616966B (en) | Device and method for groundwater defluorination | |
| AU2015261726B2 (en) | Method for the treatment of water comprising a step of adsorption on ion-exchanging resin and a step of ballasted coagulation/flocculation and of separation, and corresponding plant | |
| CN106242108B (en) | A kind of the cyclone flotation processing system and method for the waste water containing algae | |
| CN102774993B (en) | Water treatment device and method aiming at excessive ferrum, manganese, fluorine and arsenic in underground water | |
| CN203112625U (en) | Emergency treatment system for sudden thallium pollution of raw water | |
| CN205442981U (en) | Wastewater treatment system | |
| CN209210569U (en) | The zero-discharge treatment system of landfill leachate | |
| CN100513334C (en) | Deep treatment process of metallurgical sewage | |
| CN109851156A (en) | A kind of glass waste water reuse treatment method and system | |
| CN101224910B (en) | Three-step combined purifying membrane backwashing method | |
| CN107698092A (en) | A kind of packaged type fluorine-containing wastewater treatment method and device | |
| CN106673255A (en) | Wastewater treatment method and wastewater treatment device | |
| CN202808516U (en) | Novel underground water defluorination device | |
| CN103102026A (en) | Sudden raw water thallium pollution emergency treatment system and method | |
| CN102838199B (en) | Device and method for removing fluorine ions in groundwater | |
| CN110526504A (en) | A kind of system and method for targeting denitrogenation dephosphorizing acid-basic regenerated waste liquids in water processing | |
| CN1935683A (en) | Slag treating agent and its process and equipment for treating sewage | |
| CN205442980U (en) | Sewage purification processing system | |
| CN202322545U (en) | Sewage reuse treatment device | |
| CN207567053U (en) | A kind of packaged type fluorine-containing waste water processing apparatus | |
| CN104591363B (en) | A kind of remove the integral water purifying device of fluoride in water | |
| CN215828565U (en) | Adjustable sewage storage treatment device and combined system | |
| CN213266011U (en) | Deep fluorine removal system | |
| CN208762312U (en) | A kind of device being exclusively used in bath sewage processing | |
| CN107032536A (en) | A kind of method that tandem integral type air supporting removes COD in citrus waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201218 Address after: 223800 No.1 Weiyi Road, Sucheng Economic Development Zone, Suqian City, Jiangsu Province Patentee after: Jiangsu Heqing Haiyan Environment Co.,Ltd. Address before: Nanjing City, Jiangsu province 210098 Xikang Road No. 1 Patentee before: HOHAI University |