CN103880134B - A kind of novel all-in-one Removal of Fluorine From Underground Water device - Google Patents
A kind of novel all-in-one Removal of Fluorine From Underground Water device Download PDFInfo
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- CN103880134B CN103880134B CN201410095887.7A CN201410095887A CN103880134B CN 103880134 B CN103880134 B CN 103880134B CN 201410095887 A CN201410095887 A CN 201410095887A CN 103880134 B CN103880134 B CN 103880134B
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Abstract
A kind of integration Removal of Fluorine From Underground Water device provided by the invention, including the inlet unit being sequentially connected with, fluorine removal reaction member, intermediate water tank and filter element; Tentatively retain unit connection by flco between described fluorine removal unit, intermediate water tank, bottom described filter element, be provided with outlet. This apparatus structure is compact, floor space is little, easy to use, flexible operation, processing cost are low, defluorination effect good, effluent quality is high, has good popularizing application prospect.
Description
Technical field
The invention belongs to water treatment field, particularly to a kind of novel all-in-one Removal of Fluorine From Underground Water device.
Background technology
The subsoil water fluoride pollution outstanding problem of China, high-fluorine water distribution area, more than 1,600,000 square kilometres, relates to nearly hundred million people of water population. By the fluorosis caused after the fluorine of drinking water approach excess intake, it is ubiquitous serious problems in world wide.
Existing Removal of Fluorine From Underground Water technology mainly includes coagulation sedimentation, activated alumina absorption method, electroosmose process, hyperfiltration, ion exchange, absorption method, bone black absorption and zeolite defluorination method etc., but all there is certain problem in various technology in actual application so that it is popularization and application there be difficulties involved when.
Hydroxyapatite is a kind of respond well new material being used to Removal of Fluorine From Underground Water in the recent period, owing to material itself does not have toxic action to receive significant attention. The form of hydroxyapatite includes powder-material and form of spherical particles filtrate, and is applied in some Practical Projects. But, one of adsorption capacity bottleneck becoming its popularization and application of restriction how making full use of hydroxyapatite. CN201210102971 discloses a kind of Removal of Fluorine From Underground Water device and method, the flco formed by both is used to build clarification unit by powdery hydroxyapatite, coagulant mixing, achieve the recycling of powdery hydroxyapatite, what significantly reduce coagulant makes consumption simultaneously, reduces the probability that aluminium ion in water outlet exceeds standard. But, the method being clarified unit upflow velocity less, it is generally required to control within 3m/h, thus causing that the floor space processing device is relatively big, adding processing cost. Ultrafilter membrane is incorporated in system by the patent CN201210364313.6 developed on this basis, thus providing good basic condition for process optimization, and can control aluminum ions content preferably. But it is relatively costly to equally exist ultrafilter membrane, causing apparatus cost and operating cost higher, in rural area, application has certain restriction. Occur in that the defluorination method with hydroxyapatite for basic handling material and device successively in the recent period, all can obtain good defluorination effect, but there is also certain problem in actual applications. For the conceptual phase residing for current technology of Fluoride Removal, in the urgent need to a kind of novel fluorine removal device, while guaranteeing defluorination effect, both can significantly reduce plant area area, can effectively reduce again its operation and maintenance cost.
Summary of the invention
Goal of the invention: in order to overcome above-mentioned the deficiencies in the prior art, it is an object of the invention to the novel all-in-one Removal of Fluorine From Underground Water device that a kind of floor space is little, operating cost is low.
Technical scheme: a kind of novel all-in-one Removal of Fluorine From Underground Water device provided by the invention, including the inlet unit (1) being sequentially connected with, fluorine removal reaction member (2), intermediate water tank (3) and filter element (4); Tentatively retaining unit (5) connection by flco between described fluorine removal unit (2), intermediate water tank (3), described filter element (4) bottom is provided with outlet.
As improvement, described inlet unit (1), fluorine removal unit (2) and intermediate water tank (3) are located at filter element (4) top.
Improving as another kind, described fluorine removal reaction member (2), for being thoroughly mixed form reactor, is provided with intermission aeration device (6), aeration time interval 0.5-2min bottom it, aeration rate and inflow ratio are 0.5-1.2; In fluorine removal reaction member (2), hydraulic detention time is 20-60min.
Improving as another kind, the mass ratio filling the mixture of inorganic aluminate and powdery hydroxyapatite, described inorganic aluminate and powdery hydroxyapatite in described fluorine removal reaction member (2) is (2-5): 1; The loading of described mixture is 3-20g/L fluorine removal reaction member effective volume.
Improving as another kind, described flco tentatively retains unit (5) for G2 molding sand core or G3 molding sand core, and pending water water flow velocity of crossing on core is 5-10m/h.
As further improvement, core bottom is provided with pulse air cleaning device (7), pulse frequency 0.5-2min/ time, air capacity 10-30L/s m2。
Improving as another kind, the dischargeable capacity of described intermediate water tank (3) processes more than the water yield and intermediate water tank (3) peak level 10cm below lower than fluorine removal reaction member (2) peak level at 5min.
Improving as another kind, fill the common grating quartz sand that particle diameter is 0.8-1.2mm and form filtering layer (8) in described filter element (4), filtering layer (8) thickness is more than 0.8m; Pending water filtering velocity in filtering layer (8) is 5-10m/h.
As further improvement, also include backwash discharge outlet (9), described backwash discharge outlet (9) is located at filter element (4) top, backwash discharge outlet (9) 1.5m more than lower than intermediate water tank (3) peak level, and than filtering layer (8) surface height 0.5-0.8m.
Beneficial effect: the invention provides that novel integrated Removal of Fluorine From Underground Water apparatus structure is compact, floor space is little, easy to use, flexible operation, processing cost are low, defluorination effect good, effluent quality is high, has good popularizing application prospect.
Specifically, the present invention realizes the gravity flow of subsequent processing units current by the once lifting of inlet unit, utilizes inlet unit to pass into pending water and the inorganic aluminate adding in fluorine removal reactor and powdery hydroxyapatite; Using fluorine removal reaction member as the main place of fluorine removal, the high concentration flco formed by hydroxyapatite and Al-based coagulant realizes fluorine removal; Realize retaining of flco with vertically disposed core, and pulse air flushing system is set carrys out a small amount of flco that cleaning sand wicking surface sticks and extend the use time of core; In quartz sand filtering layer, fully retaining of residual particulate matter in water is realized by being located at the filter element of lower section.
The present invention passes through the ratio of inorganic aluminate and the powdery hydroxyapatite adjusting in fluorine removal reaction member and makes consumption, significantly improves the removal effect of fluoride in subsoil water, and reduces the fluorine removal cost of reality; And intermission aeration device is set bottom fluorine removal reaction member, while guaranteeing mixing effect, significantly reduce the air capacity of input, thus reducing corresponding energy expenditure.
Major part flco can be trapped in fluorine removal reactor by the present invention by arranging of the preliminary device for trapping of flco, thus significantly strengthening defluorination effect;In the present invention, the preliminary device for trapping of flco preferably employs less costly, the good core of rejection effect, ensures that the rejection effect of flco; The basic characteristics simultaneously filtered according to core are provided with pulse air cleaning device, such that it is able to utilize relatively low expense to extend the service life of core; Additionally, due to core is less costly, it is set to movable, regularly core is replaced thus convenient.
The present invention, by arranging intermediate water tank, adds the stability that system is run on the one hand, has provided a system to again basic potential energy source on the other hand, it is possible to provides basic energy source for the backwash in core and filter tank, saves the basal energy expenditure needed for backwash.
Filter element is arranged at bottom of device by the present invention, such that it is able to effectively utilize the potential energy that upper unit possesses to realize the automatic operation of device, it is to avoid the waste of energy.
In the present invention, fluorine removal reactor is discharged waste water and backwashing wastewater and only just need to can be realized effective mud-water separation through of short duration quiet sinking after collecting, and supernatant can be back to water inlet pipe, reduces the generation amount of waste water.
Accompanying drawing explanation
Fig. 1 is the structural representation of novel all-in-one Removal of Fluorine From Underground Water device of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing novel all-in-one Removal of Fluorine From Underground Water device of the present invention made and further illustrating.
Novel all-in-one Removal of Fluorine From Underground Water device, is shown in Fig. 1, including the inlet unit (1) being sequentially connected with, fluorine removal reaction member (2), intermediate water tank (3) and filter element (4); Described inlet unit (1), fluorine removal unit (2) and intermediate water tank (3) are located at filter element (4) top. Tentatively retaining unit (5) connection by flco between fluorine removal unit (2), intermediate water tank (3), described filter element (4) bottom is provided with outlet. Described fluorine removal reaction member (2), for being thoroughly mixed form reactor, is provided with intermission aeration device (6) bottom it.
In the present invention, the dischargeable capacity of described intermediate water tank (3) processes more than the water yield, backwash discharge outlet (9) 1.5m lower than intermediate water tank (3) peak level, and ratio filtering layer (8) surface height 0.6m at 5min; Alternatively, backwash discharge outlet (9) 1.5m more than lower than intermediate water tank (3) peak level, and ratio filtering layer (8) surface height 0.5-0.8m, all can realize the object of the invention; Intermediate water tank (3) peak level 10cm below lower than fluorine removal reaction member (2) peak level; Fill the common grating quartz sand that particle diameter is 0.8-1.2mm in described filter element (4) and form filtering layer (8); Filter element (4) top is provided with backwash discharge outlet (9), backwash discharge outlet (9) 1.5m more than lower than intermediate water tank (3) peak level, and than filtering layer (8) surface height 0.5-0.8m.
In the present invention, flco tentatively retains unit (5) for G2 molding sand core or G3 molding sand core, and core bottom is provided with pulse air cleaning device (7). Alternatively, flco tentatively retains unit (5) can also be other cores, it is therefore preferable to G2 molding sand core or G3 molding sand core.
For verifying the usefulness of this defluorination method, in the usefulness checking that Shenqiu County town water factory of Henan Province has been correlated with. During test, the water quality situation of former water is as shown in table 1.
Table 1 raw water quality parameter detecting result
By adopting different parameters to arrange, verifying water treatment efficiency, this plant running parameter is in Table 2.
Table 2 novel all-in-one Removal of Fluorine From Underground Water plant running parameter
Water quality after detection process, result is in Table 3.
Table 3 raw water quality parameter detecting result
Claims (4)
1. an integrated Removal of Fluorine From Underground Water device, it is characterised in that: include the inlet unit (1), fluorine removal reaction member (2), intermediate water tank (3) and the filter element (4) that are sequentially connected with; Tentatively retaining unit (5) connection by flco between described fluorine removal reaction member (2), intermediate water tank (3), described filter element (4) bottom is provided with outlet; Described inlet unit (1), fluorine removal reaction member (2) and intermediate water tank (3) are located at filter element (4) top; Described fluorine removal reaction member (2), for being thoroughly mixed form reactor, is provided with intermission aeration device (6), aeration time interval 0.5-2min bottom it, aeration rate and inflow ratio are 0.5-1.2; In fluorine removal reaction member (2), hydraulic detention time is 20-60min; Filling the mixture of inorganic aluminate and powdery hydroxyapatite in described fluorine removal reaction member (2), the mass ratio of described inorganic aluminate and powdery hydroxyapatite is (2-5): 1; The loading of described mixture is 3-20g/L fluorine removal reaction member effective volume; Filling the common grating quartz sand that particle diameter is 0.8-1.2mm in described filter element (4) and form filtering layer (8), filtering layer (8) thickness is more than 0.8m; Pending water filtering velocity in filtering layer (8) is 5-10m/h; Described flco tentatively retains unit (5) for G2 molding sand core or G3 molding sand core, and pending water water flow velocity of crossing on core is 5-10m/h; The dischargeable capacity of described intermediate water tank (3) processes more than the water yield and intermediate water tank (3) peak level 10cm below lower than fluorine removal reaction member (2) peak level at 5min.
2. a kind of integration Removal of Fluorine From Underground Water device according to claim 1, it is characterised in that: core bottom is provided with pulse air cleaning device (7), pulse frequency 0.5-2min/ time, air capacity 10-30L/s core area.
3. a kind of integration Removal of Fluorine From Underground Water device according to claim 1, it is characterized in that: also include backwash discharge outlet (9), described backwash discharge outlet (9) is located at filter element (4) top, the position of backwash discharge outlet (9) is lower than intermediate water tank (3) more than peak level 1.5m, and is higher than filtering layer (8) surface 0.5-0.8m.
4. a kind of integration Removal of Fluorine From Underground Water device according to claim 1, it is characterised in that: described inlet unit includes water inlet pipe (11) and the fluorine removal medicament addition device (12) being sequentially arranged on water inlet pipe, tube mixer (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410095887.7A CN103880134B (en) | 2014-03-14 | 2014-03-14 | A kind of novel all-in-one Removal of Fluorine From Underground Water device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410095887.7A CN103880134B (en) | 2014-03-14 | 2014-03-14 | A kind of novel all-in-one Removal of Fluorine From Underground Water device |
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| CN103880134A CN103880134A (en) | 2014-06-25 |
| CN103880134B true CN103880134B (en) | 2016-06-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591363B (en) * | 2015-02-13 | 2016-08-31 | 河海大学 | A kind of remove the integral water purifying device of fluoride in water |
| CN108275806A (en) * | 2018-03-30 | 2018-07-13 | 环境保护部南京环境科学研究所 | A kind of box river and lake water fluoridation device of mobile model |
Citations (5)
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|---|---|---|---|---|
| CN1724400A (en) * | 2005-06-03 | 2006-01-25 | 天津大学 | Process for micro filtering combined fluorine removing by aluminate coagulating |
| CN101054248A (en) * | 2006-04-11 | 2007-10-17 | 王文臣 | Method of treating fluorine-containing edible water of various water quality |
| MD4103B1 (en) * | 2010-10-25 | 2011-03-31 | Univ De Stat Din Moldova | Process for waste water treatment from fluoride ions |
| CN102616966A (en) * | 2012-04-09 | 2012-08-01 | 河海大学 | Device and method for groundwater defluorination |
| CN102838199A (en) * | 2012-09-26 | 2012-12-26 | 河海大学 | Device and method for removing fluorine ions in groundwater |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724400A (en) * | 2005-06-03 | 2006-01-25 | 天津大学 | Process for micro filtering combined fluorine removing by aluminate coagulating |
| CN101054248A (en) * | 2006-04-11 | 2007-10-17 | 王文臣 | Method of treating fluorine-containing edible water of various water quality |
| MD4103B1 (en) * | 2010-10-25 | 2011-03-31 | Univ De Stat Din Moldova | Process for waste water treatment from fluoride ions |
| CN102616966A (en) * | 2012-04-09 | 2012-08-01 | 河海大学 | Device and method for groundwater defluorination |
| CN102838199A (en) * | 2012-09-26 | 2012-12-26 | 河海大学 | Device and method for removing fluorine ions in groundwater |
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