CN204356104U - A kind of device removing pentavalent inorganic arsenic in water - Google Patents
A kind of device removing pentavalent inorganic arsenic in water Download PDFInfo
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- CN204356104U CN204356104U CN201420283184.2U CN201420283184U CN204356104U CN 204356104 U CN204356104 U CN 204356104U CN 201420283184 U CN201420283184 U CN 201420283184U CN 204356104 U CN204356104 U CN 204356104U
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- driven pump
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Abstract
The utility model provides a kind of device removing pentavalent inorganic arsenic in water.Comprise containing the former pond of arsenic (1), power-driven pump (2), charcoal post (4) and clear water collecting tank (7), described charcoal post (4) comprise the water inlet water distributor (3) being arranged on charcoal post (4) upper end, the sorbent material (5) being seated in charcoal post (4) middle and lower part, be positioned at bottom twine (6), be connected with power-driven pump (2) containing the former pond of arsenic (1), power-driven pump (2) is connected with water inlet water distributor (3), and clear water collecting tank (7) is connected to the bottom of charcoal post (4) by outlet conduit.The utility model does not need costliness and the preparation process of the metal-adsorbing material of complexity, secondary pollution can not be produced, the arsenic removing apparatus provided, greatly can improve the arsenic removal usefulness of simple carbide material sorbing material, can be used for controlling the arsenic concentration in tap water, underground water, industrial arsenic-containing waste water and sewage secondary clarifier effluent, reach relevant national standard.
Description
Technical field
The utility model relates to a kind of water treatment device, specifically a kind of device removing As (V) in water.
Background technology
Arsenic (As) is the quasi-representative pollutent in water, and its pollution problem is mainly reflected in underground water.The arsenic of occurring in nature exists with the form of inorganic arsenic (arsenite and arsenate) usually, also containing the organoarsenic such as a small amount of first arsenic acid (MMA) and dimethyl arsenate (DMA).The toxicity size of these arsenides is followed successively by from high to low: inorganic arsenic (III) > organoarsenic (III) > inorganic arsenic (V) > organoarsenic (V), wherein, the toxicity of trivalent inorganic arsenic As (III) is 60 times of pentavalent inorganic arsenic As (V), also be the main existence form of arsenic in underground water, be easy to be converted into As (V) by mode of oxidizing As (III), therefore, in water treatment procedure, As (V) is the main arsenic pollutent controlled.
Systematic study shows, long-term exposure can cause body arsenicalism in low dosage containing arsenic tap water, and then cause the diseases such as heredity is poisoning, myocardial atrophy, diabetes, immunity system weakening, long-term exposure can cause skin carcinoma, lung cancer etc. in the arsenic tap water of high density, arsenic compound has been confirmed as carcinogens by the authoritative institutions such as the World Health Organization (WHO) and EPA (USEPA), therefore, in state's regulation tap water such as WHO, USEPA, European Union, Japan, China, the highest permission reduces to 10 μ g/L containing arsenic mass concentration by 50 original μ g/L.In recent years, the Chilean northern territory underground water of South America pollutes very serious by arsenic, be that in world wide, underground water pollutes country the most serious by arsenic, Supreme Procuratorate goes out concentration up to 21mg/L; The underground water of some countries of South East Asia and North America also receives the severe contamination of arsenic, and concentration is up to 10mg/L; High-arsenic underground water district of China is mainly distributed in 40 counties (flag, city) in province (autonomous region) districts such as Inner Mongol, Xinjiang, Shanxi, Taiwan, in underground water, Supreme Procuratorate goes out concentration and is about 2mg/L, and the high arsenic population of exposure that in drinking-water, arsenic content is greater than 50 μ g/L has exceeded nearly million people.These high arsenic pollute and cause a lot of endemic arseniasis event, become a large problem of world's drinking water safety.Country's " 12 " prevention and cure of endemic diseases planning clearly proposes to pollute region arsenic to fall arsenic engineering construction, guarantees that Drinking Water meets state health standards, visible, and the arsenic controlled in water pollutes, imperative.
The removal ability of conventional water treatment (coagulation, precipitation, filtration) process to As in water (V) is very limited.Adsorption technology is a kind of effective technology removing water pollutant, study about the absorption of arsenic in water at present, majority concentrates in metal oxide absorption, and this type of sorbent material has good arsenic removal usefulness, but there is the problems such as expensive, regeneration difficulty, operation expense are high in metal oxide absorption, be difficult to be applied in existing water factory, particularly high arsenic area is fallen behind for some, without potable water treatment plants, to be more difficultly used directly.Comparatively speaking, gac is a kind of well sorbing material, has been widely used in the removal of Organic substance in water and inorganics, adopts charcoal absorption to be considered to the effective technology controlling a kind of simple, economic of water pollutant and be convenient to practical application.Commercial gac has been in the news and has had certain adsorptive power to As (V), but comparatively other sorbing material such as metal oxide is poor for arsenic removal ability, therefore adopt gac direct absorption arsenic removal report less, more that the method for employing at carbon surface depositing metal oxide is to improve the adsorptive power of arsenic, but this mode can cause metal oxide uneven in activated carbon surface deposition distribution, and then cause the absorption of gac localized accumulated to be difficult to give full play to adsorptive power, affect (pH≤3 are best) greatly by system pH, reduction is to problems such as the removals of coexisted organic compounds, strongly limit the treatment efficiency of carried by active carbon metal oxide materials arsenic removal and actually to apply.Based on these problems, consider, seek a kind of device of efficient hardening charcoal absorption arsenic removal technology from Environmental capacity and technology application point, the arsenic controlled in water pollutes, and has profound significance.
Summary of the invention
The purpose of this utility model is that proposing one effectively can remove As in water (V), thus effectively controls the device of pentavalent inorganic arsenic in the removal water of the pollution of arsenic in water.
The purpose of this utility model is achieved in that
Comprise containing the former pond 1 of arsenic, power-driven pump 2, charcoal post 4 and clear water collecting tank 7, described charcoal post 4 comprise the water inlet water distributor 3 being arranged on charcoal post 4 upper end, the sorbent material 5 being seated in charcoal post 4 middle and lower part, be positioned at bottom twine 6, be connected with power-driven pump 2 containing the former pond 1 of arsenic, power-driven pump 2 is connected with water inlet water distributor 3, and clear water collecting tank 7 is connected to the bottom of charcoal post 4 by outlet conduit.
Described sorbent material is the mixture of carbide material and ferrous salt.
Described water inlet water distributor has the water distributing pore of equidistantly distribution.
In removal water of the present utility model, the device of As (V) comprises three parts, and first part is raw water collection system, comprises containing the former pond 1 of arsenic and power-driven pump 2.Second section is Sewage treatment systems, comprises charcoal post 4.Charcoal post 4 upper end is provided with into water water distributor 3, middle and lower part filled with adsorbent 5, and bottom is provided with twine 6.Part III is water-collecting system, comprises clear water collecting tank 7.Wherein, be connected with power-driven pump 2 containing the former pond 1 of arsenic, power-driven pump 2 and charcoal post water distributor 3 of intaking is connected, and will be uniformly distributed by charcoal post water inlet water distributor 3 containing the former water of arsenic, makes to contain the former water of arsenic and fully contacts with the sorbent material 5 be filled in charcoal cylinder.Clear water collecting tank 7 is connected to the bottom of charcoal post 4 by outlet conduit.
The flow rate control of power-driven pump 2 is at 5 ~ 10 ms/h.
Sorbent material 5 in charcoal post is mixed by carbide material and ferrous salt.Carbide material is granular carbon.Ferrous salt is iron protochloride.Fe in the quality of carbide material and ferrous salt in sorbent material
2+mass ratio be 50:1.Fe in the sorbent material of filling in charcoal post
2+4:1 is preferably with the mol ratio of As in water (V).
In removal water of the present utility model, the reaction mechanism of the device of As (V) is: when carbide material mixes by a certain percentage with ferrous salt, Fe
2+by diffusing into (micropore, mesopore, macropore) in carbide material hole, with the acid oxy radical complexing on carbide material surface, for As (V) provides more adsorption activity position, reach the efficient object except As (V).
The utility model relative to being conventionally used for the coagulation, precipitation, filtration, biological dearsenicating method etc. of removing As (V) in water at present, there is the advantages such as adsorption efficiency is high, with low cost, technique is simple, running maintenance is convenient; For metal oxide arsenic-removing adsorption agent and the application of current wide coverage, this sorbent material has efficient stable, regeneration with low cost, capable of washing, non-metallic ion stripping, the contaminant removal efficiency that coexists is high and be convenient to the features such as existing water factory application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 1 a and Fig. 1 b is the arrangement form of charcoal post of the present utility model water inlet water distributor.
Embodiment
Embodiment one: will be pumped in activated carbon column 4 by power-driven pump 2 with the speed of 10 ms/h containing the water in the former pond 1 of arsenic, be provided with at activated carbon column top into water water distributor 3, can be contacted with sorbent material 5 equably by water inlet water distributor containing the former water of arsenic, wherein sorbent material is the modified activated carbon that granular carbon and iron protochloride are composited, Fe in the quality of granular carbon and ferrous salt
2+mass ratio be 50:1, Fe in ferrous salt
2+be 4:1 with the mol ratio of As in water (V), can As (V) efficiently, fast in planar water, thus reach the object effectively removing As (V).Water after absorption enters in clear water collecting tank 7 through twine 6 and rising pipe.
Embodiment two: present embodiment controls 7.0 from different being of embodiment one containing the water pH in the former pond of arsenic, and temperature controls at 25 DEG C.
Embodiment three: present embodiment is mutually containing air or the oxygen of exposing to the sun in the former pond 1 of arsenic from the different of embodiment one, two, make containing the dissolved oxygen in the former pond of arsenic between 1 ~ 20mg/L, arsenic in water can be converted into As (V) completely like this, the arsenic removal ability of gac can be improved widely.
Technical solutions of the utility model include but not limited to above-mentioned cited specific embodiment.
Claims (2)
1. remove the device of pentavalent inorganic arsenic in water for one kind, it is characterized in that: comprise containing the former pond of arsenic (1), power-driven pump (2), charcoal post (4) and clear water collecting tank (7), described charcoal post (4) comprises the water inlet water distributor (3) being arranged on charcoal post (4) upper end, be seated in the sorbent material (5) of charcoal post (4) middle and lower part, be positioned at the twine (6) of bottom, be connected with power-driven pump (2) containing the former pond of arsenic (1), power-driven pump (2) is connected with water inlet water distributor (3), clear water collecting tank (7) is connected to the bottom of charcoal post (4) by outlet conduit.
2. a kind of device removing pentavalent inorganic arsenic in water according to claim 1, is characterized in that: the water distributing pore described water inlet water distributor having equidistantly distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283184.2U CN204356104U (en) | 2014-05-30 | 2014-05-30 | A kind of device removing pentavalent inorganic arsenic in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283184.2U CN204356104U (en) | 2014-05-30 | 2014-05-30 | A kind of device removing pentavalent inorganic arsenic in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204356104U true CN204356104U (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420283184.2U Expired - Fee Related CN204356104U (en) | 2014-05-30 | 2014-05-30 | A kind of device removing pentavalent inorganic arsenic in water |
Country Status (1)
| Country | Link |
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| CN (1) | CN204356104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698649A (en) * | 2017-01-24 | 2017-05-24 | 清华大学 | Rural drinking water biological slow filtration arsenic removal facility |
-
2014
- 2014-05-30 CN CN201420283184.2U patent/CN204356104U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698649A (en) * | 2017-01-24 | 2017-05-24 | 清华大学 | Rural drinking water biological slow filtration arsenic removal facility |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20160530 |