CN105198054A - Method for removing boron in water body - Google Patents
Method for removing boron in water body Download PDFInfo
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- CN105198054A CN105198054A CN201410255516.0A CN201410255516A CN105198054A CN 105198054 A CN105198054 A CN 105198054A CN 201410255516 A CN201410255516 A CN 201410255516A CN 105198054 A CN105198054 A CN 105198054A
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Abstract
The invention relates to a method for removing boron in a water body. The method comprises the steps that 1, magnesium oxide is added in the boron-containing water body, and heating stirring is performed to achieve initial boron removing; 2, the solution obtained in the first step is filtered, an oxidizing agent is added into the filtrate, and heating stirring is performed to achieve deep boron removing. According to the method, the cheap magnesium oxide is utilized as the boron removing raw materials, and the raw materials are low in cost and easy to obtain; magnesium elements in the water body cannot be consumed in the boron treating process; water bodies such as underground brine, salt lake brine, industrial wastewater and seawater which are high in boron content can be treated, the process is short, the treatment cost is low, and the boron content in the treated water body can be reduced to below 5 ppm.
Description
Technical field
The present invention relates to a kind of water body except the method for boron, be specifically related to a kind of magnesium oxide that utilizes and from water body, remove the method for boron impurities for raw material.
Background technology
Containing a large amount of magnesium resources in the water bodys such as bittern (comprising salt lake brine, subsurface brine and industrial waste bittern), seawater, it is the important source material that electrolytic process produces metal Mg-based hydrogen storage.But, when Boron contents is higher in water body, follow-up electrolytic magnesium process can be had a strong impact on, greatly reduce the current efficiency of electrolytic process.Research shows, in electrolysis magnesium process, will make negative electrode passivation when the mass percent of boron in ionogen or boride reaches 0.001 ~ 0.002%, magnesium globule not easily converges, and current efficiency declines 5 ~ 40%.In order to meet the requirement of electrolytic magnesium to raw material, must first carry out except boron process water body.At present, water body has following several except the method for boron:
(1) flocculation sedimentation.By electrostatic attraction, boric acid is adsorbed onto on sediment in the solution, by the boron in sedimentation removing solution.The people such as Li Shuan (refer to document: Li Shuan, will kept by clothing, Zhou Lei. and alkalization flocculence seawater takes off the pretreated research of boron. University Of Science and Technology Of Tianjin's journal, 2011,26 (6): 38-42) regulated the pH value of seawater by basifier, utilize the Mg (OH) generated
2the characterization of adsorption of colloid removes the boron in seawater.A large amount of magnesium ion is for cost is except boron to lose in seawater for the method, and the control of magnesium hydroxide growing amount is more difficult, is not suitable for high magnesium chloride bittern system except boron.
(2) active carbon adsorption.The people such as Yan Chunyan (referring to document: Yan Chunyan, Yi Wentao, Deng little Chuan, Ma Peihua. gac is studied the absorption of Boron In Seawater. inorganic salt technique, 2007,39 (3): 34-36) utilize trace B in charcoal absorption solution.Result shows, once except boron rate can reach more than 90%.But adsorbing the gac reached capacity needs to carry out manipulation of regeneration, in 175 ~ 200 DEG C of temperature ranges, realize regeneration using hydrogen as sweeping gas, add technical process and cost.
(3) ion-exchange-resin process.Boron-selective resins has good in boron rate, the boric acid in water body and the poly-hydroxy complexing in effects of boron resin, and the hydrogen ion simultaneously discharged can be neutralized by amido, reaches the object of boron in removing bittern with this.The people such as Guozheng ZHANG document (refer to document: Guozheng ZHANG, Li Yongqiang, Zhao Peng, Tang Linsheng. old halogen except boron experimental study. salt industry and chemical industry, 2011,1:12-14) in describe and utilize except boron resin D40 is to the effect of old halogen except boron.Result of study shows, when bittern volume is 4 times of resin volume, de-boron rate can reach more than 80%.The shortcoming of the method is that resin is easily damaged in Reusability, wash-out, regenerative process, causes the loss of resin, makes production cost higher.
(4) extraction process.Extraction ratio juris mixes with boric acid solution as extraction agent with containing o-dihydroxy and the organic solvent immiscible with water, makes it fully contact.Because boric acid can be extracted to organic phase with the polyhydroxy functional groups reacting forming complex in organic solvent, thus reach the object with other ion isolation in aqueous phase.The people such as Cheng Wenying (refer to document: Cheng Wenying, Yang Jianyuan, Yan Junyi. from East Taijinaier lake acidifying extraction mother liquor, reclaim boron by 2-ethyl second alcohol. sea lake salt and chemical industry, 1997,27 (1): 34-38) make extraction agent by 2-ethyl second alcohol, make thinner with sulfonated kerosene, extract in acid condition, strip with water under neutrallty condition, thus boron is separated from brine systems.The people such as Tang Minglin (refer to document: Tang Minglin, Deng Tian dragon .A1416 extracts boric acid research from selecting the mother liquor after boron. and salt lake is studied, 1994,2 (1): 63-66) A1416 is dissolved in kerosene the boron extracted in bittern, percentage extraction and stripping rate all can reach more than 90%.The shortcoming that the method exists is that extraction agent cost is higher and be partially soluble in water, and virose extraction agent also can to environment in addition.
(5) acid precipitation method is added.Add acid precipitation method and mainly utilize the boric acid character that solubleness is less in the solution, in water body, add hydrochloric acid or boron is converted into the less boric acid of solubleness by sulfuric acid, thus reach the object of separating boron.The people such as Yang Cundao (refer to document: Yang Cundao, Jia Youliang, Li Jun gesture. from the novel process research of salt lake brine crystallization boric acid. chemical engineering, 1992,20 (3): 22-27) utilize reactive crystallization principle, at room temperature acidify salt lake bittern water direct crystallization obtains boric acid.But only can remove the boron of in bittern 50 ~ 60% by the method, de-boron efficiency is very low, thus usual the method and other methods combining are got up to use.
Existence due to boron a large amount of in water body seriously can reduce the output capacity of current efficiency and magnesium in electrolytic magnesium process, therefore needs to carry out except boron process water body.The subject matter that current water body exists except boron has: (1) uses the raw material costly such as a large amount of boron-selective resins, organic solvent, gac to carry out except boron, except the loss of these raw materials in boron process and regeneration costly; (2) except boron efficiency is low, the requirement of electrolytic magnesium process to raw material can not be reached; (3) except magnesium ion in water body in boron process loses in a large number, the cost except boron is added.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of water body except the method for boron.The method, using magnesium oxide as raw material, cheaper starting materials, to be easy to get; Except boron rate is greater than 95%, except in the water body of complete boron, Boron contents is less than 5ppm, can meet the requirement of electrolytic magnesium industry to raw material; Except boron process can not cause the loss of magnesium ion in water body, new impurity can not be introduced.
For reaching this object, the present invention by the following technical solutions:
Water body, except a method for boron, comprises the steps:
(1) added by magnesium oxide in boracic water body, heated and stirred is to realize tentatively except boron;
(2) filtered by step (1) gained solution, in filtrate, add oxygenant, heated and stirred is to realize the degree of depth except boron.
Contriver explores the reaction mechanism of the inventive method further by a large amount of experiments, finds, by controlling the heating of water body and agitation condition, aquation can generate cotton-shaped magnesium hydroxide with positive charge after adding magnesium oxide wherein.Due to the characteristic of boron out-shell electron, the hydroxide radical can in water with lone-pair electron is combined and forms electronegative B (OH)
4-, be easy to by the magnesium hydroxide particles of positively charged institute adsorption and sedimentation, and then reach the preliminary object except boron.In addition, unhydrated magnesium oxide also exists with the particulate state of positively charged, can adsorb electronegative B (OH)
4-and sedimentation, reach the object except boron.Contriver is also found by a large amount of experiments, is dissolved with a small amount of magnesium hydroxide through preliminary removing in the water body of boron.Control condition of heating and stirring after adding oxygenant and can remove iron in water body and organic impurity, these impurity exist with the form of flocks, are conducive to the magnesian precipitation of residual hydrogen in water body and sedimentation.Flocculent precipitate (magnesium hydroxide, ironic hydroxide, organic impurity) sinks slowly, and specific surface is very large, is easy to the boron of trace in adsorbed water body, realizes the degree of depth of water body except boron.
Have employed oxygenant in method of the present invention, its effect is as follows: (1) by the oxidation such as iron, organic impurity harmful to electrolytic magnesium process in water body, can form flocks under certain condition of heating and stirring.In all right adsorbed water body of this flocks, the boron of trace, removes while realizing boron, iron, organic impurity; (2) oxygenant discharges oxygen under the condition of heating, can improve the thermodynamic condition of heated and stirred, is convenient to magnesium hydroxide precipitation and the absorption to boron.
In aforesaid method, the aqueous solution of to be boron-containing quantity the be 5 ~ 500ppm of boracic water body described in step (1); Preferably, the boron-containing quantity of described boracic water body is 10 ~ 400ppm; Preferably, the described aqueous solution is bittern or seawater.
In aforesaid method, in step (1), be 1.00 parts by weight with the feeding quantity of boracic water body, magnesian feeding quantity is 0.001 ~ 0.4 weight part; Preferably, be 1.00 parts by weight with the feeding quantity of boracic water body, magnesian feeding quantity is 0.005 ~ 0.1 weight part.
According to certain embodiments of the present invention, described magnesian feeding quantity 0.001 ~ 0.4 weight part is such as 0.001 weight part, 0.005 weight part, 0.01 weight part, 0.06 weight part, 0.11 weight part, 0.16 weight part, 0.21 weight part, 0.26 weight part, 0.31 weight part, 0.36 weight part.
In aforesaid method, condition of heating and stirring described in step (1) is heat 0.1 ~ 4.0h at 50 ~ 130 DEG C; Preferably, described condition of heating and stirring is heat 0.5 ~ 3.0h at 65 ~ 95 DEG C.
According to certain embodiments of the present invention, described heated and stirred temperature 50 ~ 130 DEG C is such as 50 DEG C, 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C, 100 DEG C, 110 DEG C, 120 DEG C, 130 DEG C.
According to certain embodiments of the present invention, described heated and stirred time 0.1 ~ 4.0h is such as 0.2h, 0.6h, 1.0h, 1.4h, 1.8h, 2.2h, 2.6h, 3.0h, 3.4h, 3.8h.
In aforesaid method, oxygenant described in step (2) is any one or the wherein combination of at least two kinds in hydrogen peroxide, potassium permanganate, oxygen, clorox, potassium hypochlorite.Typical but non-limiting example comprises: hydrogen peroxide, potassium permanganate, clorox, potassium hypochlorite, the combination of hydrogen peroxide and potassium permanganate, the combination of oxygen and potassium hypochlorite, the combination of clorox and potassium permanganate, the combination of hydrogen peroxide, oxygen and potassium hypochlorite, the combination etc. of potassium permanganate, oxygen, clorox and potassium hypochlorite.
In aforesaid method, in step (2), be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxygenant is 0.0005 ~ 0.05 weight part; Preferably, be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxygenant is 0.002 ~ 0.01 weight part.
According to certain embodiments of the present invention, feeding quantity 0.0005 ~ 0.05 weight part of described oxygenant is such as 0.001 weight part, 0.005 weight part, 0.01 weight part, 0.015 weight part, 0.020 weight part, 0.025 weight part, 0.030 weight part, 0.035 weight part, 0.040 weight part, 0.045 weight part, 0.05 weight part.
In aforesaid method, in step (2), condition of heating and stirring is stir 0.1 ~ 3.0h at 60 ~ 145 DEG C; Preferably, described condition of heating and stirring is stir 0.2 ~ 2.0h at 75 ~ 100 DEG C.
According to certain embodiments of the present invention, described heated and stirred temperature 60 ~ 145 DEG C is such as 65 DEG C, 70 DEG C, 75 DEG C, 80 DEG C, 85 DEG C, 90 DEG C, 95 DEG C, 100 DEG C, 105 DEG C, 110 DEG C, 115 DEG C, 120 DEG C, 125 DEG C, 130 DEG C, 135 DEG C, 140 DEG C, 145 DEG C.
According to certain embodiments of the present invention, described heated and stirred time 0.1 ~ 3.0h is such as 0.1h, 0.4h, 0.7h, 1.0h, 1.3h, 1.6h, 1.9h, 2.2h, 2.5h, 2.8h.
For in the present invention adopt raw material (e.g., magnesium oxide, bittern, seawater etc.) to be not specifically limited.Magnesium oxide is common commercial products, also can be the product of magnesite, rhombspar, brucite calcining.
In the present invention, term " boracic water body " refers to that salt lake brine, subsurface brine, salt industry discard the water body containing a certain amount of magnesium chloride such as bittern, seawater, and in this water body, Boron contents is 5 ~ 500ppm; Term " tentatively except boron " refers to and is down within the scope of 10 ~ 50ppm by the inventive method by Boron contents in boracic water body; Term " degree of depth except boron " refers to is down to below 5ppm by the inventive method by Boron contents in boracic brine.
Water body is except a method for boron, and described method specifically comprises the steps:
(1) added by magnesium oxide in boracic water body, at 50 ~ 130 DEG C, heated and stirred 0.1 ~ 4.0h is to realize tentatively except boron; Be 1.00 parts by weight with the feeding quantity of boracic water body, magnesian feeding quantity is 0.001 ~ 0.4 weight part;
(2) filtered by step (1) gained solution, in filtrate, add oxygenant, at 60 ~ 145 DEG C, heated and stirred 0.1 ~ 3.0h is to realize the degree of depth except boron; Described oxygenant is any one or the wherein combination of at least two kinds in hydrogen peroxide, potassium permanganate, oxygen, clorox or potassium hypochlorite; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxygenant is 0.0005 ~ 0.05 weight part.
Compared with prior art scheme, the present invention has following beneficial effect:
(1) utilize magnesium oxide and oxygenant to be raw material, raw material is easy to get, cost is low, consumption is few;
(2) except the process of boron can not introduce new impurity, the loss of magnesium ion in water body can not be caused;
(3) except boron rate is greater than 95%, except in the water body of complete boron, Boron contents is less than 5ppm, can meet the requirement of electrolytic magnesium to raw material;
(4) by tentatively except boron and the degree of depth are except boron, remove while boron in water body, iron and organic impurity can be realized.
Accompanying drawing explanation
Fig. 1 is according to the process flow sheet of the inventive method water body except boron.
The present invention is described in more detail below.But following example is only simple and easy example of the present invention, and do not represent or limit the scope of the present invention, protection scope of the present invention is as the criterion with claims.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
For better the present invention being described, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
The embodiment of the present invention is removed boron process according to following method to water body and is tested:
1. the mensuration of Boron contents.Measuring method refers to GB: GB/T5750.5-2006 " Drinking Water method of inspection inorganic non-metallic index ".
2. the mensuration of iron level.Testing method is shown in standard: the HG/T3539-2003 mensuration-phenanthroline spectrophotometry of iron level " in the industrial circulating cooling water ".
3. except boron temperature measuring and control.Heating and temperaturel control is carried out to the aqueous solution, floating ± 1 DEG C of scope of temperature with the magnetic stirrer (producer: Medical Instruments factory of Jintan City, model: JJ-1) of band heating unit.
Embodiment 1
4.64g magnesium oxide is added 4640g salt industry and discard (boracic 150ppm, iron content 7ppm) in bittern, material, in 50 DEG C of heated and stirred 4.0h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 0.02g hydrogen peroxide after being heated to 60 DEG C, and in 60 DEG C of heated and stirred 3.0h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.001 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant hydrogen peroxide is 0.0005 weight part.
Characterize except boron process water body according to above-mentioned measuring method, its result is as follows: preliminary except Boron contents in bittern after boron be 25.2ppm, the degree of depth except Boron contents in bittern after boron process be 4.1ppm, except boron rate is 97.3%; In bittern after boron process, iron level is 0.8ppm.
Embodiment 2
9.28g magnesium oxide is added 1856g salt industry and discard (boracic 150ppm, iron content 7ppm) in bittern, material, in 65 DEG C of heated and stirred 3.5h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.86g hydrogen peroxide after being heated to 70 DEG C, and in 70 DEG C of heated and stirred 2.5h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.005 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant hydrogen peroxide is 0.001 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 31.4ppm, after the degree of depth is except boron process, in bittern, Boron contents is 3.6ppm, except boron rate is 97.6%; In bittern after boron process, iron level is 0.2ppm.
Embodiment 3
9.28g magnesium oxide is added 928g salt industry and discard (boracic 150ppm, iron content 7ppm) in bittern, material, in 85 DEG C of heated and stirred 2.0h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 4.64g potassium permanganate after being heated to 80 DEG C, and in 80 DEG C of heated and stirred 2.0h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.01 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant potassium permanganate is 0.005 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 15.2ppm, after the degree of depth is except boron process, in bittern, Boron contents is 2.9ppm, except boron rate is 98.1%; In bittern after boron process, iron level is 1.4ppm.
Embodiment 4
9.28g magnesium oxide is added 185.6g salt industry and discard (boracic 150ppm, iron content 7ppm) in bittern, material, in 95 DEG C of heated and stirred 1.5h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.86g potassium permanganate after being heated to 90 DEG C, and in 90 DEG C of heated and stirred 1.5h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.05 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant potassium permanganate is 0.01 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 19.8ppm, after the degree of depth is except boron process, in bittern, Boron contents is 4.8ppm, except boron rate is 96.8%; In bittern after boron process, iron level is 0.9ppm.
Embodiment 5
9.28g magnesium oxide is added 92.8g salt industry and discard (boracic 150ppm, iron content 7ppm) in bittern, material, in 105 DEG C of heated and stirred 1.0h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.86g potassium permanganate after being heated to 100 DEG C, and in 100 DEG C of heated and stirred 1.0h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.1 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant potassium permanganate is 0.02 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 36.0ppm, after the degree of depth is except boron process, in bittern, Boron contents is 4.3ppm, except boron rate is 97.1%; In bittern after boron process, iron level is 2.3ppm.
Embodiment 6
9.28g magnesium oxide is added 46.4g salt industry and discard (boracic 150ppm, iron content 7ppm) in bittern, material, in 115 DEG C of heated and stirred 0.5h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.39g clorox after being heated to 120 DEG C, and in 120 DEG C of heated and stirred 0.5h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.2 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidizing agent sodium hypochlorite is 0.03 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 24.6ppm, after the degree of depth is except boron process, in bittern, Boron contents is 3.6ppm, except boron rate is 97.6%; In bittern after boron process, iron level is 0.3ppm.
Embodiment 7
9.28g magnesium oxide is added 30.9g salt industry and discard (boracic 150ppm, iron content 7ppm) in bittern, material, in 125 DEG C of heated and stirred 0.3h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.24g clorox after being heated to 130 DEG C, and in 130 DEG C of heated and stirred 0.3h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.3 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidizing agent sodium hypochlorite is 0.04 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 11.1ppm, after the degree of depth is except boron process, in bittern, Boron contents is 2.0ppm, except boron rate is 98.6%; In bittern after boron process, iron level is 4.2ppm.
Embodiment 8
9.28g magnesium oxide is added 23.2g salt industry and discard (boracic 150ppm, iron content 7ppm) in bittern, material, in 130 DEG C of heated and stirred 0.1h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.16g potassium hypochlorite after being heated to 145 DEG C, and in 145 DEG C of heated and stirred 0.1h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.4 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidizing agent sodium hypochlorite is 0.05 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 20.1ppm, after the degree of depth is except boron process, in bittern, Boron contents is 4.9ppm, except boron rate is 96.7%; In bittern after boron process, iron level is 4.8ppm.
Embodiment 9
Added by 9.28g magnesium oxide (boracic 256ppm, iron content 24ppm) in 185.6g salt lake brine, material, in 90 DEG C of heated and stirred 0.5h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.86g hydrogen peroxide after being heated to 85 DEG C, and in 85 DEG C of heated and stirred 0.5h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.05 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant hydrogen peroxide is 0.01 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 35.5ppm, after the degree of depth is except boron process, in bittern, Boron contents is 4.8ppm, except boron rate is 98.1%; In bittern after boron process, iron level is 4.9ppm.
Embodiment 10
Added by 9.28g magnesium oxide (boracic 498ppm, iron content 35ppm) in 185.6g subsurface brine, material, in 95 DEG C of heated and stirred 1.0h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.86g hydrogen peroxide after being heated to 100 DEG C, and in 100 DEG C of heated and stirred 1.0h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.05 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant hydrogen peroxide is 0.01 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 14.4ppm, after the degree of depth is except boron process, in bittern, Boron contents is 4.0ppm, except boron rate is 99.2%; In bittern after boron process, iron level is 4.6ppm.
Embodiment 11
Added by 4.64g magnesium oxide (boracic 5ppm, iron content 3ppm) in 185.6g seawater, material, in 90 DEG C of heated and stirred 1.5h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 1.86g hydrogen peroxide after being heated to 90 DEG C, and in 100 DEG C of heated and stirred 1.0h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.025 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant hydrogen peroxide is 0.01 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 9.7ppm, after the degree of depth is except boron process, in bittern, Boron contents is 0.3ppm, except boron rate is 94.0%; In bittern after boron process, iron level is 0.2ppm.
Embodiment 12
Added by 4.64g magnesium oxide (boracic 5ppm, iron content 3ppm) in 185.6g seawater, material, in 90 DEG C of heated and stirred 1.5h, realizes preliminary except boron.Filtered by bittern tentatively except boron, the filtrate obtained adds 5.58g hydrogen peroxide after being heated to 90 DEG C, and in 100 DEG C of heated and stirred 1.0h, realizes the degree of depth except boron.In this embodiment, be 1.00 parts by weight with the feeding quantity of boracic brine, magnesian feeding quantity is 0.025 weight part; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxidant hydrogen peroxide is 0.03 weight part.
Remove boron process according to above-mentioned measuring method to water body to characterize, its result is as follows: tentatively except Boron contents in bittern after boron is 10.8ppm, after the degree of depth is except boron process, in bittern, Boron contents is 0.2ppm, except boron rate is 96.0%; In bittern after boron process, iron level is 0.4ppm.
Applicant states, the present invention illustrates method of the present invention by above-described embodiment, but the present invention is not limited to aforesaid operations step, does not namely mean that the present invention must rely on above-mentioned steps and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of raw material selected by the present invention, all drops within protection scope of the present invention and open scope.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. water body is except a method for boron, comprises the steps:
(1) added by magnesium oxide in boracic water body, heated and stirred is to realize tentatively except boron;
(2) filtered by step (1) gained solution, in filtrate, add oxygenant, heated and stirred is to realize the degree of depth except boron.
2. method according to claim 1, is characterized in that, the aqueous solution of to be boron-containing quantity the be 5 ~ 500ppm of boracic water body described in step (1);
Preferably, the boron-containing quantity of described boracic water body is 10 ~ 400ppm;
Preferably, the described aqueous solution is bittern or seawater.
3. method according to claim 1 and 2, is characterized in that, in step (1), be 1.00 parts by weight with the feeding quantity of boracic water body, magnesian feeding quantity is 0.001 ~ 0.4 weight part; Preferably, be 1.00 parts by weight with the feeding quantity of boracic water body, magnesian feeding quantity is 0.005 ~ 0.1 weight part.
4. the method according to any one of claim 1-3, is characterized in that, step (1) described condition of heating and stirring is heat 0.1 ~ 4.0h at 50 ~ 130 DEG C; Preferably, described condition of heating and stirring is heat 0.5 ~ 3.0h at 65 ~ 95 DEG C.
5. the method according to any one of claim 1-4, is characterized in that, oxygenant described in step (2) is any one or the wherein combination of at least two kinds in hydrogen peroxide, potassium permanganate, oxygen, clorox or potassium hypochlorite.
6. the method according to any one of claim 1-5, is characterized in that, in step (2), is 1.00 parts by weight with the feeding quantity of filtrate, and the feeding quantity of oxygenant is 0.0005 ~ 0.05 weight part; Preferably, be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxygenant is 0.002 ~ 0.01 weight part.
7. the method according to any one of claim 1-6, is characterized in that, step (2) described condition of heating and stirring is stir 0.1 ~ 3.0h at 60 ~ 145 DEG C; Preferably, described condition of heating and stirring is stir 0.2 ~ 2.0h at 75 ~ 100 DEG C.
8. according to the method one of claim 1-7 Suo Shu, it is characterized in that, described method comprises the steps:
(1) added by magnesium oxide in boracic water body, at 50 ~ 130 DEG C, heated and stirred 0.1 ~ 4.0h is to realize tentatively except boron; Be 1.00 parts by weight with the feeding quantity of boracic water body, magnesian feeding quantity is 0.001 ~ 0.4 weight part;
(2) filtered by step (1) gained solution, in filtrate, add oxygenant, at 60 ~ 145 DEG C, heated and stirred 0.1 ~ 3.0h is to realize the degree of depth except boron; Described oxygenant is any one or the wherein combination of at least two kinds in hydrogen peroxide, potassium permanganate, oxygen, clorox or potassium hypochlorite; Be 1.00 parts by weight with the feeding quantity of filtrate, the feeding quantity of oxygenant is 0.0005 ~ 0.05 weight part.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106554063A (en) * | 2016-11-21 | 2017-04-05 | 王松鹤 | A kind of water body boron removal method |
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