CN109761327A - Processing method without aluminum ions waste water - Google Patents
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Abstract
The present invention discloses a kind of processing method without aluminum ions waste water.The processing method includes the following steps: that the pH value of the waste water described in soluble carbonate salt reagent tune to 8 or more, sufficiently reacts 1h or more, is aged 3h or more, be separated by solid-liquid separation；Wherein, the waste water is one of waste water containing magnesium, calcic waste water and zinc-containing water or a variety of；The temperature of the reaction is 0-40 DEG C.The processing method of waste water of the invention, it is simple process, mild condition, easy to operate, a large amount of ammonia nitrogen and P elements will not be introduced into waste water, to avoid increasing the pressure of subsequent processing, and the processing method, the removal of magnesium ion, calcium ion and zinc ion can be realized well, it easily realizes and is separated by solid-liquid separation, it can guarantee the continuity of production and then realize industrialized production, and processing cost is low, economic benefit and social benefit are very significant.
Description
Technical field
The present invention relates to a kind of processing methods without aluminum ions waste water.
Background technique
With the continuous development continuously and healthily of the industry in China, discharged volume of industrial waste water increasingly increases, and contamination phenomenon is increasingly
Seriously, watershed environment and residents ' health exert a certain influence.Chemical industry as one of China's economic development pillar industry
Industry, in order to adapt to market to Related product high quality demand, production technology is also constantly being improved, three-protection design difficulty also with
Increase.Especially acid, alkali, inorganic salts etc. are as essential raw material in industrial production, after a series of processing, most
A large amount of inorganic salts enter in waste water eventually, and this not only adds the difficulty of enterprise's sewage treatment, while also leading to a large amount of resource
Waste.
The processing method for reporting a kind of glufosinate-ammonium waste water containing magnesium, the party are disclosed in Chinese patent literature CN106630357A
Ammonium salt and phosphate are introduced in normal direction waste water, magnesium ion are precipitated in the form of ammonium magnesium phosphate, to realize the removal of magnesium ion.
But this method can introduce a large amount of ammonia nitrogen and P elements into waste water, increase the pressure of subsequent processing.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome the method for handling the waste water containing magnesium in the prior art can be to useless
A large amount of ammonia nitrogen and P elements are introduced in water to increase the defect of the pressure of subsequent processing, and are provided a kind of novel without aluminium
The processing method of the waste water of ion.
Herein, the present inventor wishes explanation, and the pH value of the waste water containing magnesium is very low, generally less than 6, and magnesium ion is in acidity
Under the conditions of in the form of magnesium ion exist；Discharge for the waste water containing magnesium, temporarily without specific standards, still, the pH value of waste water is necessary
Reach neutral or alkalescent, and ammonia nitrogen in waste water, total phosphorus, total salt amount, COD, BOD etc. must reach national emission standard.For
Solution equipment seriously corroded cannot achieve this technical problem of industrialized production, and at the beginning of research and development, the research of the present inventor is thought
Road is intended to the soluble substance that will contain the magnesium ion in magnesium waste water and be converted under neutrallty condition, to be removed by absorption method,
However, such soluble substance can not be obtained.Later, the present inventor changes thinking, tries to become to precipitate by magnesium ion, to incite somebody to action
Its precipitation and separation from waste water, then, inventor have attempted following numerous methods, are not succeeded.For example, the present inventor was once
It attempts addition liquid alkaline (sodium hydrate aqueous solution) and the pH value of waste water is adjusted to neutral or alkalescent, but can magnesium ion be changed into
Magnesium hydroxide gels are in frozen bean curd shape, can not convey, can not filter, and then can not discharge and realize industrialized production.The present invention
People also once attempted after liquid alkaline is added, and flocculant is added, to which magnesium hydroxide gels flocculate, to realize magnesium hydroxide from useless
Separation in water, but after having attempted anionic polyacrylamide and aluminium polychloride these two types flocculant, it also cannot achieve hydrogen-oxygen
Change the flocculation of magnesium gel, and then cannot achieve industrialized production.The present inventor attempts have been made to using phosphate and silicic acid salt treatment
Waste water containing magnesium, but the granularity of gained precipitating particle is thinner, and easily stifled filter cloth, cannot achieve industrialized production when filtering.
The present inventor just has found after having done a lot of research work, using the processing method of waste water of the invention, Bu Huixiang
A large amount of ammonia nitrogen and P elements are introduced in waste water, thus avoid increasing the pressure of subsequent processing, and the processing method, it can be fine
The removal of magnesium ion, calcium ion and zinc ion is realized on ground, is easily realized and is separated by solid-liquid separation, can be realized industrialized production, and be processed into
This is low.
The present invention solves above-mentioned technical problem by the following technical programs:
The present invention provides a kind of processing method without aluminum ions waste water, the treating method comprises following steps: using
The pH value of waste water described in soluble carbonate salt reagent tune sufficiently reacts 1h or more, is aged 3h or more, be separated by solid-liquid separation, i.e., to 8 or more
It can；Wherein, the waste water is one of waste water containing magnesium, calcic waste water and zinc-containing water or a variety of；The temperature of the reaction is
0-40℃。
In above-mentioned processing method, the waste water can may be, for example, useless containing magnesium to be free of aluminum ions waste water in the prior art
Water, then may be, for example, the reaction of Grignard Reagent participation, it is quenched, resulting waste water containing magnesium after Product recycling, the waste water containing magnesium
Generally comprise following substance: Mg2+、Cl-、Br-、Na+、H+, tetrahydrofuran, product, tar and water, the pH value of the waste water containing magnesium
Generally 2-3, in the waste water containing magnesium, MgCl2Mass fraction be 20%-30%, the mass fraction of NaCl less than 10%,
The mass fraction of NaBr is less than 1%, and the mass fraction of organic matter (containing tar and product) is less than 1%, the quality point of tetrahydrofuran
For number less than 1%, remaining is water.
In above-mentioned processing method, the soluble carbonate salt reagent may be, for example, soluble carbonate salt and/or containing solubility
The aqueous solution of carbonate is more preferably the saturated water containing soluble carbonate salt preferably containing the aqueous solution of soluble carbonate salt
Solution.
Wherein, the soluble carbonate salt is preferably Na2CO3、(NH4)2CO3And K2CO3One of or it is a variety of, more preferably
Ground is Na2CO3、(NH4)2CO3Or K2CO3, further more preferably it is Na2CO3。
Wherein, the soluble carbonate salt in the aqueous solution containing soluble carbonate salt is preferably Na2CO3、(NH4)2CO3
And K2CO3One of or it is a variety of, be more preferably Na2CO3、(NH4)2CO3Or K2CO3, further more preferably it is Na2CO3。
In above-mentioned processing method, adjust the pH value of the waste water preferably to 9 or more, more preferably to 9-14, further more preferably
Ground is to 9-12.
In above-mentioned processing method, adjust the temperature of waste water described in the process of the pH value of the waste water for example can at 40 DEG C hereinafter,
Preferably 0-40 DEG C, be more preferably 0-30 DEG C, is further more preferably 20-30 DEG C, is further more preferably 25-30 DEG C.
In above-mentioned processing method, the time of the reaction is preferably 3h or more, is more preferably 3-6h, further more preferably
For 3-4h.
In above-mentioned processing method, the temperature of the reaction is preferably 0-30 DEG C, is more preferably 20-30 DEG C, further more
It goodly is 25-30 DEG C.
In above-mentioned processing method, the reaction preferably carries out under stiring.
In above-mentioned processing method, the ageing refers to standing, and the time of the ageing is preferably 6h or more, more preferably
It is further more preferably 6-12h for 6-15h.
In above-mentioned processing method, the temperature of the ageing for example can at 40 DEG C hereinafter, preferably 0-40 DEG C, more preferably for
0-30 DEG C, be further more preferably 20-30 DEG C, is further more preferably 25-30 DEG C.
In above-mentioned processing method, after the separation of solid and liquid, filtrate and filter cake are obtained.
Wherein, the filter cake is preferably washed and is dried, and obtains carbonate crude product.When the carbonate crude product is magnesium carbonate
When crude product, the magnesium carbonate crude product is white amorphous powder, and nontoxic, tasteless, property is stablized, purity up to 92.6% or more,
It can be used for fireproof coating, production magnesium salts etc., also can be used as product sale, improve the performance of enterprises.
Wherein, the filtrate preferably analyses salt through evaporation, obtains sodium chloride crude product and distillation condensed water.Gained chlorination as a result,
Sodium crude product and distillation condensed water can make dynamical system salt water raw material or be back to original production process, to reach recycling recycling
With wastewater zero discharge.
Wherein, the temperature of waste water described in other operating process before the separation of solid and liquid and the separation of solid and liquid can be equal
It is more preferably 0-30 DEG C at 40 DEG C hereinafter, preferably 0-40 DEG C, is further more preferably 20-30 DEG C, further more preferably
It is 25-30 DEG C.
In above-mentioned processing method, preferably, not adding any substance containing ammonia nitrogen and P elements.
Without prejudice to the field on the basis of common sense, above-mentioned each optimum condition, can any combination to get the present invention it is each preferably
Example.
Reagent used in the present invention, raw material are commercially available.
The positive effect of the present invention is that: the processing method of waste water of the invention, simple process, mild condition, easily
Operation, will not introduce a large amount of ammonia nitrogen and P elements into waste water, to avoid increasing the pressure of subsequent processing, and the processing side
Method can realize the removal of magnesium ion, calcium ion and zinc ion well, easily realize and be separated by solid-liquid separation, and can guarantee the company of production
Continuous property realizes industrialized production in turn, and processing cost is low, and economic benefit and social benefit are very significant.
Detailed description of the invention
Fig. 1 is the process flow chart of the processing method of the waste water containing magnesium of each embodiment.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions, or according to quotient
The selection of product specification.
In following embodiments and comparative example, the waste water containing magnesium is the reaction that Grignard Reagent participates in, and is quenched, Product recycling
Resulting waste water afterwards, the waste water containing magnesium include following substance: Mg2+、Cl-、Br-、Na+、H+, tetrahydrofuran, product, tar and
Water, the pH value of the waste water containing magnesium are generally 2-3, in the waste water containing magnesium, MgCl2Mass fraction be 20%-30%, NaCl
Mass fraction of the mass fraction less than 10%, NaBr less than 1%, the mass fraction of organic matter (containing tar and product) is less than
1%, for the mass fraction of tetrahydrofuran less than 1%, remaining is water.
In following embodiments and comparative example, Mg in filtrate2+Mass content and magnesium carbonate crude product in MgCO3Mass content
Measurement inductive coupling plasma emission spectrum method of the detection method referring to GB/T 30902-2014 inorganic chemical product impurity element
(1), the equipment used is Thermo iCAP6300 plasma emission spectrometer；Referring to GB/T 21525-2008 inorganic chemical industry
In product content of magnesium measure universal method compleximetry (2) and referring to GB/T 27814-2011 anhydrous magnesium carbonate (3).
In following embodiments and comparative example, the detection of the mass content of sodium chloride is referring to GB/T 9725- in sodium chloride crude product
2007 chemical reagent potentiometric titration general rules, the equipment used is T70 automatical potentiometric titrimeter.
In following embodiments and comparative example, the detection of the mass content of water in condensed water is distilled referring to GB/T606-2003ization
Reagent determination of moisture universal method karr Fei Xiufa is learned, the equipment used is KF-1 moisture teller.
In following embodiments and comparative example, the temperature refers to suction filtration and the before waste water containing magnesium in all operating process
Temperature.
In following embodiments and comparative example, saturated sodium carbonate solution refers to the saturated sodium carbonate solution at 30 DEG C, at this time
The mass fraction of sodium carbonate is 28.4% in saturated sodium carbonate solution.
Embodiment 1
The 300g of waste water containing magnesium (Mg is added into 500mL four-hole bottle2+Mass content about 8.5%, pH value=2-3), at 0 DEG C,
It is slowly dropped into saturation Na2CO3Solution to system pH is 12, stirs 3h, is aged 12h, filters, obtains filter cake and filtrate；Wherein, it filters
For cake after washing on a small quantity, drying obtains magnesium carbonate crude product；Wherein, filtrate analyses salt through evaporation, obtains sodium chloride crude product and distillation condensation
Water.
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 78ppm, MgCO in magnesium carbonate crude product3Mass content is
94.5%；The mass content of sodium chloride is 99.0% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 2
The 300g of waste water containing magnesium (Mg is added into 500mL four-hole bottle2+Mass content about 8.5%, pH value=2-3), at 0 DEG C,
It is slowly dropped into saturation Na2CO3Solution to system pH is 6, is slowly dropped into the K of 53.2wt% later2CO3Solution, until system pH
It is 12, stirs 3h, be aged 12h, filters, obtain filter cake and filtrate；Wherein, for filter cake after washing on a small quantity, it is thick to obtain magnesium carbonate for drying
Product；Wherein, filtrate analyses salt through evaporation, obtains sodium chloride crude product and distillation condensed water.
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 78ppm, MgCO in magnesium carbonate crude product3Mass content is
94.6%；The mass content of sodium chloride is 97.6% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 3
By the K of the 53.2wt% in embodiment 22CO3Solution replaces with 50wt% (NH4)2CO3Solution, remaining same embodiment
2。
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 80ppm, MgCO in magnesium carbonate crude product3Mass content is
94.1%；The mass content of sodium chloride is 98.0% in sodium chloride crude product, and the mass content for distilling water in condensed water is 98.1%.
Embodiment 4
By the K of the 53.2wt% in embodiment 22CO3Solution replaces with the Na of 6.5wt%2CO3Solution, remaining same embodiment
2。
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 81ppm, MgCO in magnesium carbonate crude product3Mass content is
94.8%；The mass content of sodium chloride is 98.9% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 5
The 300g of waste water containing magnesium (Mg is added into 500mL four-hole bottle2+Mass content about 8.5%, pH value=2-3), at 0 DEG C,
It is slowly dropped into saturation Na2CO3Solution to system pH is 12, stirs 3h, is aged 12h, filters, obtains filter cake and filtrate；Wherein, it filters
For cake after washing on a small quantity, drying obtains magnesium carbonate crude product；Wherein, filtrate analyses salt through evaporation, obtains sodium chloride crude product and distillation condensation
Water.
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 80ppm, MgCO in magnesium carbonate crude product3Mass content is
94.6%；The mass content of sodium chloride is 99.7% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 6
The temperature of the waste water containing magnesium is 30 DEG C, remaining is the same as embodiment 5.
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 79ppm, MgCO in magnesium carbonate crude product3Mass content is
93.4%；The mass content of sodium chloride is 99.6% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 7
The temperature of the waste water containing magnesium is 25 DEG C, remaining is the same as embodiment 5.
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 80ppm, MgCO in magnesium carbonate crude product3Mass content is
93.6%；The mass content of sodium chloride is 99.7% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 8
The 300g of waste water containing magnesium (Mg is added into 500mL four-hole bottle2+Mass content about 8.5%, pH value=2-3), at 25 DEG C,
It is slowly dropped into saturation Na2CO3Solution to system pH is 8, stirs 3h, is aged 12h, filters, obtains filter cake and filtrate；Wherein, filter cake
After washing on a small quantity, drying obtains magnesium carbonate crude product；Wherein, filtrate analyses salt through evaporation, obtains sodium chloride crude product and distillation condensed water.
The qualitative effect of suction filtration is that can filter, and the quantitative effect of suction filtration is that the suction filtration is completed in 15 minutes.
Effect data: Mg in filtrate2+Mass content be 82ppm, MgCO in magnesium carbonate crude product3Mass content is
98.4%；The mass content of sodium chloride is 99.5% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 9
It is slowly dropped into saturation Na2CO3Solution to system pH is 9, remaining is the same as embodiment 8.
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 90ppm, MgCO in magnesium carbonate crude product3Mass content is
99.3%；The mass content of sodium chloride is 98.6% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 10
It is aged 6h, remaining is the same as embodiment 9.
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is completed in 5 minutes.
Effect data: Mg in filtrate2+Mass content be 88ppm, MgCO in magnesium carbonate crude product3Mass content is
99.3%；The mass content of sodium chloride is 99.7% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 11
It is aged 3h, remaining is the same as embodiment 9.
The qualitative effect of suction filtration is that can filter, and the quantitative effect of suction filtration is that the suction filtration is completed in 15 minutes.
Effect data: Mg in filtrate2+Mass content be 90ppm；MgCO in magnesium carbonate crude product3Mass content is
99.3%；The mass content of sodium chloride is 99.8% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Embodiment 12 (test-manufactures data in the workshop of embodiment 10)
As shown in Figure 1,1. turning V1011 waste water containing magnesium 3000L to R1004/R1005, it is slowly added dropwise at 20-25 DEG C
Na is saturated in V10132CO3Solution, on-line monitoring pH value to 9；2. after adjusting pH value, sampling and testing oxidisability, if starch
Potassium iodide starch paper discoloration then needs to add a small amount of sodium sulfite and removes system oxide, if starch potassium iodide paper is non-discolouring,
Then continue next-step operation；3. stirring 3h, after being aged 6h, R1004/R1005 bottom valve is opened, suction filtration tank F1003a is discharged to and is taken out
Filter, filter cake (magnesium carbonate crude product) remove V1015 with water elution a small amount of in V1014, filtrate；4. filtrate in V1015 is gone to R1006
In, the vacuum pump of R1006 is opened, is slowly depressurized, until vacuum is drawn on earth and after stablizing, is heated up to R1006, elutriation is steamed
Salt must distill condensed water and mother liquor, wherein distillation condensation water collection goes to V1029, mother liquor after reaching certain liquid level to V1023
It puts to suction filtration tank F1003b and is filtered, obtain sodium chloride crude product and filtrate, which collects to V1028a/b, which connects temporarily
Pipeline goes back to R1006, is applied to down batch distillation.
The qualitative effect of suction filtration is to filter very well, and the quantitative effect of suction filtration is that the suction filtration is complete in 2h in the suction filtration
At.
Effect data: Mg in the filtrate in V10152+Mass content be 120ppm, MgCO in filter cake (magnesium carbonate crude product)3
Mass content is 98.1%；The mass content of sodium chloride is 99.5% in sodium chloride crude product, and the quality for distilling water in condensed water contains
Amount is 99.9%.
Comparative example 1
The temperature of the waste water containing magnesium is 90 DEG C, remaining is the same as embodiment 5.
The qualitative effect of suction filtration is to filter difficulty, and the quantitative effect of suction filtration is that the suction filtration is completed in 30 minutes.
Effect data: Mg in filtrate2+Mass content be 150ppm, MgCO in magnesium carbonate crude product3Mass content is
84.0%；The mass content of sodium chloride is 99.2% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Comparative example 2
It is slowly dropped into saturation Na2CO3Solution to system pH is 7, remaining is the same as embodiment 8.
The qualitative effect of suction filtration is that suction filtration is extremely difficult, and the quantitative effect of suction filtration is the suction filtration complete more than 30 minutes
At.
Effect data: Mg in filtrate2+Mass content be 125ppm, MgCO in magnesium carbonate crude product3Mass content is
78.1%；The mass content of sodium chloride is 99.5% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Comparative example 3
It is aged 0h, remaining is the same as embodiment 9.
The qualitative effect of suction filtration is to filter difficulty, and the quantitative effect of suction filtration is that the suction filtration is completed in 30 minutes.
Effect data: Mg in filtrate2+Mass content be 120ppm, MgCO in magnesium carbonate crude product3Mass content is
99.2%；The mass content of sodium chloride is 99.3% in sodium chloride crude product, and the mass content for distilling water in condensed water is 99.9%.
Comparative example 4
0h is stirred, remaining is the same as embodiment 9.
The qualitative effect of suction filtration is to filter difficulty, and the quantitative effect of suction filtration is that the suction filtration is completed in 20 minutes.
Effect data: Mg in filtrate2+Mass content be 158ppm, MgCO in magnesium carbonate crude product3Mass content is
99.2%；The mass content of sodium chloride is 99.3% in sodium chloride crude product, and the mass content for distilling condensed water is 99.9%.
Comparative example 5 (test-manufactures data in the workshop of comparative example 4)
1. turning V1011 waste water containing magnesium 3000L to R1004/R1005, saturation Na is slowly dropped at 25 DEG C2CO3Solution,
Line monitors pH value to 9；2. after adjusting pH value, sampling and testing oxidisability needs to mend if starch potassium iodide paper changes colour
Add a small amount of sodium sulfite to remove system oxide and continues next-step operation if starch potassium iodide paper is non-discolouring；3. stirring
0h after being aged 12h, opens R1004/R1005 bottom valve, is discharged to suction filtration tank F1003a and is filtered, filter cake (magnesium carbonate crude product)
It is eluted with water a small amount of in V1014, filtrate removes V1015；4. filtrate in V1015 is gone in R1006, the vacuum pump of R1006 is opened,
Slowly decompression heats up to R1006 until vacuum is drawn on earth and after stablizing, and steams elutriation salt, must distill condensed water and mother
Liquid, wherein distillation condensation water collection is reached and goes to V1029 after certain liquid level to V1023, mother liquor put to suction filtration tank F1003b into
Row filters, and obtains sodium chloride crude product and filtrate, which collects to V1028a/b, which connects interim pipeline and go back to R1006, applies
It is distilled to lower batch.
The qualitative effect of suction filtration is to filter difficulty, and the quantitative effect of suction filtration is that the suction filtration is complete in 5h in the suction filtration
At.
Effect data: Mg in the filtrate in V10152+Mass content be 162ppm, MgCO in filter cake (magnesium carbonate crude product)3
Mass content is 99.0%；The mass content of sodium chloride is 99.3% in sodium chloride crude product, and the quality for distilling water in condensed water contains
Amount is 99.9%.
It is now that the performance summary of the processing method and suction filtration of embodiment and comparative example is as shown in the table (in table selected solvable
The percentage of acid carbonate reagent refers both to mass percent):
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (10)
1. a kind of processing method without aluminum ions waste water, which is characterized in that the treating method comprises following steps: using can
The pH value of waste water described in soluble carbonate reagent tune sufficiently reacts 1h or more, is aged 3h or more, be separated by solid-liquid separation, i.e., to 8 or more
It can；Wherein, the waste water is one of waste water containing magnesium, calcic waste water and zinc-containing water or a variety of；The temperature of the reaction is
0-40℃。
2. being free of the processing method of aluminum ions waste water as described in claim 1, which is characterized in that the waste water is useless containing magnesium
Water.
3. being free of the processing method of aluminum ions waste water as claimed in claim 1 or 2, which is characterized in that the soluble carbon
Silicate reagent is soluble carbonate salt and/or the aqueous solution containing soluble carbonate salt, preferably containing the water of soluble carbonate salt
Solution is more preferably the saturated aqueous solution containing soluble carbonate salt.
4. being free of the processing method of aluminum ions waste water as claimed in claim 3, which is characterized in that the soluble carbonate salt
For Na2CO3、(NH4)2CO3And K2CO3One of or a variety of, preferably Na2CO3、(NH4)2CO3Or K2CO3, more preferably for
Na2CO3；
And/or the soluble carbonate salt in the aqueous solution containing soluble carbonate salt is Na2CO3、(NH4)2CO3And K2CO3In
One or more, preferably Na2CO3、(NH4)2CO3Or K2CO3, it is more preferably Na2CO3。
5. being free of the processing method of aluminum ions waste water as claimed in claim 1 or 2, which is characterized in that adjust the waste water
PH value is to 9 or more, preferably to 9-14, more preferably to 9-12.
6. being free of the processing method of aluminum ions waste water as claimed in claim 1 or 2, which is characterized in that the temperature of the reaction
Degree is 0-30 DEG C, and preferably 20-30 DEG C, be more preferably 25-30 DEG C.
7. as claimed in claim 1 or 2 be free of aluminum ions waste water processing method, which is characterized in that the ageing when
Between be 6h or more, preferably 6-15h, be more preferably 6-12h.
8. being free of the processing method of aluminum ions waste water as claimed in claim 1 or 2, which is characterized in that adjust the waste water
PH value is to 9 or more, preferably to 9-14, more preferably to 9-12；The time of the reaction be 3h or more, preferably 3-6h, more
It goodly is 3-4h；The temperature of the reaction is 0-30 DEG C, and preferably 20-30 DEG C, be more preferably 25-30 DEG C；The ageing
Time is 6h or more, preferably 6-15h, is more preferably 6-12h.
9. being free of the processing method of aluminum ions waste water as described in claim 1, which is characterized in that the waste water is grignard examination
The reaction that agent participates in, is quenched, resulting waste water containing magnesium after Product recycling, and the pH value of the waste water containing magnesium is 2-3；
And/or adjusting the temperature of the waste water during the pH value of the waste water is 0-40 DEG C, preferably 0-30 DEG C, more preferably
Ground is 20-30 DEG C, is further more preferably 25-30 DEG C；
And/or the time of the reaction is 3h or more, preferably 3-6h, is more preferably 3-4h；
And/or the reaction carries out under stiring；
And/or the temperature of the ageing is 0-40 DEG C, preferably 0-30 DEG C, be more preferably 20-30 DEG C, further more preferably
It is 25-30 DEG C；
And/or after the separation of solid and liquid, obtain filtrate and filter cake；The filter cake is washed and is dried, and carbonate crude product is obtained；It is described
Filtrate analyses salt through evaporation, obtains sodium chloride crude product and distillation condensed water；It is described separation of solid and liquid and the separation of solid and liquid before other
The temperature of waste water described in operating process is preferably 0-40 DEG C, is more preferably 0-30 DEG C, is further more preferably 20-30 DEG C,
It is further more preferably 25-30 DEG C.
10. the processing method without aluminum ions waste water as described in any one of claim 1-3 and 5-9, which is characterized in that
In the processing method, any substance containing ammonia nitrogen and P elements is not added.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188298.6A CN109761327A (en) | 2019-03-13 | 2019-03-13 | Processing method without aluminum ions waste water |
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| CN102020388A (en) * | 2009-09-15 | 2011-04-20 | 北京建筑材料科学研究总院有限公司 | Recycling process of garbage fly ash ash-washing water |
| CN102276099A (en) * | 2011-07-29 | 2011-12-14 | 广西银亿科技矿冶有限公司 | Comprehensive treatment method of waste water from laterite-nickel ore wet smelting |
| CN104710032A (en) * | 2013-12-16 | 2015-06-17 | 中节能六合天融环保科技有限公司 | Resource process suitable for manganese-containing wastewater in electrolytic manganese production process |
| JP2016016341A (en) * | 2014-07-07 | 2016-02-01 | 太平洋セメント株式会社 | Method for treating calcium-containing waste water |
| CN106277417A (en) * | 2015-05-26 | 2017-01-04 | 有研稀土新材料股份有限公司 | The method that smelting waste water comprehensive containing magnesium reclaims |
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| CN102276099A (en) * | 2011-07-29 | 2011-12-14 | 广西银亿科技矿冶有限公司 | Comprehensive treatment method of waste water from laterite-nickel ore wet smelting |
| CN104710032A (en) * | 2013-12-16 | 2015-06-17 | 中节能六合天融环保科技有限公司 | Resource process suitable for manganese-containing wastewater in electrolytic manganese production process |
| JP2016016341A (en) * | 2014-07-07 | 2016-02-01 | 太平洋セメント株式会社 | Method for treating calcium-containing waste water |
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