CN108975440A - A kind of method of soluble residual aluminum in deep removal water - Google Patents
A kind of method of soluble residual aluminum in deep removal water Download PDFInfo
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- CN108975440A CN108975440A CN201710400731.9A CN201710400731A CN108975440A CN 108975440 A CN108975440 A CN 108975440A CN 201710400731 A CN201710400731 A CN 201710400731A CN 108975440 A CN108975440 A CN 108975440A
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- water
- aluminium
- aluminum
- residual aluminum
- soluble residual
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Present invention relates particularly to a kind of methods of soluble residual aluminum in deep removal water；The following steps are included: a, active carbon removing wherein colloid particle object is added in the processed clarification and effluent of aluminium salt flocculation sedimentation, pH b, is adjusted with dilute sulfuric acid or sodium hydroxide solution；C, the biological adsorption granular materials that proportionally into water outlet obtained by step b prepared by addition garlic waste；D, aluminum ions content in supernatant in determination step c；E, the resulting biological adsorption agent granular deposit of step c is aspirated, filter-press dehydration, dilute hydrochloric acid or dilute sulfuric acid is added, pressing filtering liquid collects to obtain the acid concentrate containing aluminium, aluminium chloride or aluminum sulfate crystal grain can be obtained by evaporative crystallization, filter residue then passes through after washing, and return step c is reused；The present invention is efficient, quick, economical, and various raw materials used are cheap to be easy to get；Be conducive to aluminium salt flocculence simultaneously to be widely used in water treatment field safety, relievedly.
Description
Technical field
The present invention relates to water-treatment technology fields, and in particular to a method of soluble residual aluminum in water is removed in depth.
Background technique
Aluminium salt flocculent precipitation is very universal in water treatment field, common inorganic flocculating agent such as aluminium chloride, aluminum sulfate with
And aluminium polychloride etc., it is all common aluminium saline flocculating agent, with it using simple, flocculating effect is good, adaptability is good, usage amount
Less, the comprehensive advantages such as cheap, become frequently with water treatment technology.But the technology is there is also a prominent disadvantage,
Residual aluminum problem in clear water i.e. after its flocculation sedimentation, annoyings always the popularization and use of the efficient flocculant.Studies have shown that mistake
Degree intake aluminium, can cause to damage, be to lead to one of inducement of senile dementia to man memory power.Therefore, aluminium series is flocculated
The use of agent has also obtained stringent control, and the aluminium content allowed in WHO (World Health Organization) regulation drinking water is no more than
0.2mg/L.To solve this problem, the method mainly used at present is that the suitable aluminum salt flocculant of selection and optimization flocculation are heavy
Shallow lake process conditions include optimal dosage, pH value etc., to guarantee residual aluminum in the up to standard of effluent quality and as far as possible reduction water outlet
Concentration.But these ways can only reduce the residual aluminum in water outlet to the greatest extent, can not steadily guarantee that residual aluminum can control
Below certified concentration.Therefore, it in order to be conducive to aluminium salt flocculence safety, relievedly be widely used, needs to develop more efficient, fast
The technology of prompt, economically viable special removing residual aluminum.
Summary of the invention
The present invention overcomes the shortcomings of the prior art, technical problem to be solved are as follows: provides a kind of deep removal water
The method of middle solubility residual aluminum.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: soluble residual in a kind of deep removal water
The method for staying aluminium, comprising the following steps:
A, passing through the processed clarification and effluent of aluminium salt flocculation sedimentation, activated carbon adsorption processing is added to remove glue therein
Body shape particulate matter；
B, the water outlet obtained by dilute sulfuric acid or sodium hydroxide solution regulating step a, makes its pH between 3-7；
C, according to the ratio of the 1-10g/L biomass absorbent that addition is prepared with garlic waste into water outlet obtained by step b
Granular materials starts stirring, enables that its is fully dispersed, suspends in water, and sufficient adsorption reaction occurs with agitation；Keep with
After upper stirring and adsorbing operates 10-480 minutes, stop stirring, enables its natural subsidence, clarification, obtain supernatant and deposit；
D, clear water is aspirated or is discharged if reaching standard by aluminum ions content in supernatant obtained by analytical test step c
Into water purification reservoir, the otherwise repeatedly operation of step c, until up to standard；
E, the resulting deposit of step c is aspirated, filter-press dehydration, the dilute hydrochloric acid or dilute sulphur of 1/5-1/10 weight is added
After acid carries out immersion treatment 1-10 hours, the acid concentrate containing aluminium is can be obtained in pressing filtering liquid collection, and filter residue is then biomass
Granular materials is adsorbed after washing, and return step c is reused；
F, aluminium chloride or aluminum sulfate crystal can be obtained by evaporative crystallization in the acid concentrate containing aluminium that step e is obtained
Grain.
The biomass absorbent granular materials prepared with garlic waste in step c the specific steps are by garlic waste
It is stirred hybrid reaction according to the mass ratio of 1:0.05-0.2:0.5-2 with alkali, water, is stirred 12-24 hours, filtering obtains
Solid product, wherein the alkali be lithium, sodium, potassium, calcium, the oxide of magnesium, hydroxide, carbonate, bicarbonate, ammonium carbonate,
One of ammonium hydrogen carbonate, urea and ammonium hydroxide or two kinds or more mix；The above solid product is washed with water until neutrality, feeding are true
Empty baking oven is 60-120 DEG C of drying in temperature, drying object is smashed, is sieved, the following powder collection of 40 mesh can be used as biomass
Adsorb granular materials.
The mixing speed of step c is 100-150RPM.
The mixing time of step c is 60-180 minutes.
Aluminium composition in step a water outlet, between several to tens mg/L.
Compared with the prior art, the invention has the following beneficial effects:
Biological adsorption granular materials of the present invention can be repeated as many times and use, and the method for the present invention is easy to operate, process is simple, holds
Easily implement, there is no secondary pollution, efficient, quick, economical, various raw materials used are cheap to be easy to get；Be conducive to aluminium salt flocculence simultaneously
It is widely used safely, relievedly in water treatment field.
Detailed description of the invention
Fig. 1 is a kind of method flow diagram that soluble residual aluminum in water is removed in depth of the present invention.
Specific embodiment
The present invention is further illustrated below in conjunction with specific embodiment.
The present invention is that base stock prepares biological adsorption material using garlic waste, can be used for the processing of aluminium salt flocculation sedimentation
The adsorbing and removing of residual aluminum in water outlet afterwards.
Embodiment 1
The method of soluble residual aluminum, mainly includes the following steps: in a kind of deep removal water
1) selective polymerization aluminium chloride is flocculant, is added in 10 liters of water according to the ratio of 60mg/L, in stirring for 250RPM
It mixes and is quickly stirred under speed 1 minute, then reduction mixing speed is 50RPM, continues stirring after ten minutes, stops stirring and enables it certainly
So sedimentation 15 minutes, it is possible to find supernatant is clarified, is transparent；Powdered activated carbon is added according to the ratio of 1g/L in clear water,
It is stirred under the mixing speed of 100RPM after twenty minutes, filtering；The concentration of analytical test soluble residual aluminum therein is 0.53mg/
L is more than safe limit standard；
2) clear water is transferred in another agitator, adjusting its pH is 5, and it is discarded that garlic is added according to the ratio of 10g/L
The biological adsorption granular materials of object preparation, starts stirring, and stirring speed is 150RPM, after keeping the above stirring and adsorbing to operate 120 minutes,
Stop stirring, enable its natural subsidence, clarification, the concentration of the soluble residual aluminum of the clear water of detection chemical examination at this time is 0.03mg/L, is reached
To safe limit standard；
3) by after the suction of absorbent particles deposit, filtering means dehydration, the dilute hydrochloric acid that 100 milliliters of 0.1M is added is impregnated
After processing 10 hours, filtered fluid collection can be obtained the acid concentrate containing aluminium, and filter residue returns to then after washing 3 times
Continue to do adsorbent use；By obtained concentrate containing aluminium by heating, evaporation, aluminum chloride crystals grain products are obtained.
Embodiment 2:
The method of soluble residual aluminum, mainly includes the following steps: in a kind of deep removal water
1) selective polymerization aluminium chloride is flocculant, is added in 10 liters of water according to the ratio of 50mg/L, in stirring for 250RPM
It mixes and is quickly stirred under speed 1.5 minutes, then reducing mixing speed is 30RPM, continues stirring after twenty minutes, stops stirring and enables it
Natural subsidence 20 minutes, it is possible to find supernatant is clarified, is transparent；Powdered activated carbon is added according to the ratio of 1.5g/L in clear water,
It is stirred under the mixing speed of 100RPM after twenty minutes, filtering；The concentration of analytical test soluble residual aluminum therein is 0.62mg/
L has been more than safe limit standard；
2) clear water is transferred in another agitator, adjusting its pH is 5.5, and it is discarded that garlic is added according to the ratio of 5g/L
The biological adsorption granular materials of object preparation, starts stirring, and stirring speed is 100RPM, after keeping the above stirring and adsorbing to operate 90 minutes,
Stop stirring, enable its natural subsidence, clarification, the concentration of the soluble residual aluminum of the clear water of detection chemical examination at this time is 0.05mg/L, is reached
To safe limit standard；
3) by after the suction of absorbent particles deposit, filtering means dehydration, the dilute sulfuric acid that 50 milliliters of 0.1M is added is impregnated
After processing 3 hours, filtered fluid collection can be obtained the acid concentrate containing aluminium, and filter residue is then after washing 3 times, return to after
It is continuous to do adsorbent use；By obtained concentrate containing aluminium by heating, evaporation, aluminum sulfate crystals grain products are obtained.
Embodiment 3:
The method of soluble residual aluminum, mainly includes the following steps: in a kind of deep removal water
1) selective polymerization aluminium chloride is flocculant, is added in 10 liters of water according to the ratio of 100mg/L, in stirring for 250RPM
It mixes and is quickly stirred under speed 2 minutes, then reduction mixing speed is 40RPM, after continuing stirring 15 minutes, stops stirring and enables it certainly
So sedimentation 25 minutes, it is possible to find supernatant is clarified, is transparent；Powdered activated carbon is added according to the ratio of 1g/L in clear water,
After being stirred 30 minutes under the mixing speed of 100RPM, filtering；The concentration of analytical test soluble residual aluminum therein is 0.37mg/
L is more than safe limit standard；
2) clear water is transferred in another agitator, adjusting its pH is 4.5, and it is discarded that garlic is added according to the ratio of 5g/L
The biological adsorption granular materials of object preparation, starts stirring, and stirring speed is 120RPM, keeps the above stirring and adsorbing operation after sixty minutes,
Stop stirring, enable its natural subsidence, clarification, the concentration of the soluble residual aluminum of the clear water of detection chemical examination at this time is 0.02mg/L, is reached
To safe limit standard；
3) by after the suction of absorbent particles deposit, filtering means dehydration, the dilute hydrochloric acid that 100 milliliters of 0.1M is added is impregnated
After processing 5 hours, filtered fluid collection can be obtained the acid concentrate containing aluminium, and filter residue is then after washing 3 times, return to after
It is continuous to do adsorbent use；By obtained concentrate containing aluminium by heating, evaporation, aluminum chloride crystals grain products are obtained.
Embodiment 4:
The method of soluble residual aluminum, mainly includes the following steps: in a kind of deep removal water
1) selective polymerization aluminium chloride is flocculant, is added in 10 liters of water according to the ratio of 60mg/L, in stirring for 250RPM
It mixes and is quickly stirred under speed 2 minutes, then reduction mixing speed is 50RPM, continues stirring after ten minutes, stops stirring and enables it certainly
So sedimentation 15 minutes, it is possible to find supernatant is clarified, is transparent；Powdered activated carbon is added according to the ratio of 1g/L in clear water,
It is stirred under the mixing speed of 100RPM after ten minutes, filtering；The concentration of analytical test soluble residual aluminum therein is 0.78mg/
L is more than safe limit standard；
2) clear water is transferred in another agitator, adjusting its pH is 5, and garlic waste is added according to the ratio of 3g/L
The biological adsorption granular materials of preparation, starts stirring, and stirring speed is that 120RPM stops after keeping the above stirring and adsorbing to operate 180 minutes
It only stirs, enables its natural subsidence, clarification, the concentration of the soluble residual aluminum of the clear water of detection chemical examination at this time is 0.05mg/L, is reached
Safe limit standard；
3) by after the suction of absorbent particles deposit, filtering means dehydration, the dilute hydrochloric acid that 20 milliliters of 1M is added is carried out at immersion
For reason after 1 hour, filtered fluid collection can be obtained the acid concentrate containing aluminium, and filter residue returns to continue then after washing 3 times
Do adsorbent use；By obtained concentrate containing aluminium by heating, evaporation, aluminum chloride crystals grain products are obtained.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (4)
1. a kind of method that soluble residual aluminum in water is removed in depth, which comprises the following steps:
A, passing through the processed clarification and effluent of aluminium salt flocculation sedimentation, activated carbon adsorption processing is added to remove colloidal therein
Particulate matter；
B, the water outlet obtained by dilute sulfuric acid or sodium hydroxide solution regulating step a, makes its pH between 3-7；
C, according to the ratio of the 1-10g/L biomass absorbent particle that into water outlet obtained by step b prepared by addition garlic waste
Material starts stirring, enables that its is fully dispersed, suspends in water, and sufficient adsorption reaction occurs with agitation；It keeps above to stir
After mixing adsorption operations 10-480 minutes, stop stirring, enables its natural subsidence, clarification, obtain supernatant and deposit；
D, clear water is aspirated or is discharged into and is net if reaching standard by aluminum ions content in supernatant obtained by analytical test step c
In water reservoir, the otherwise repeatedly operation of step c, until up to standard；
E, the resulting deposit of step c is aspirated, filter-press dehydration, be added 1/5-1/10 weight dilute hydrochloric acid or dilute sulfuric acid into
After row immersion treatment 1-10 hours, the acid concentrate containing aluminium is can be obtained in pressing filtering liquid collection, and filter residue is then biomass absorbent
Granular materials is after washing, and return step c is reused；
F, aluminium chloride or aluminum sulfate crystal grain can be obtained by evaporative crystallization in the acid concentrate containing aluminium that step e is obtained.
2. a kind of method that soluble residual aluminum in water is removed in depth according to claim 1, which is characterized in that step c
In the biomass absorbent granular materials prepared with garlic waste the specific steps are by garlic waste and alkali, water according to 1:
The mass ratio of 0.05-0.2:0.5-2 is stirred hybrid reaction, stirs 12-24 hours, and filtering obtains solid product,
In, the alkali is lithium, sodium, potassium, calcium, the oxide of magnesium, hydroxide, carbonate, bicarbonate, ammonium carbonate, ammonium hydrogen carbonate, urine
Element and one of ammonium hydroxide or two kinds or more mix；The above solid product is washed with water up to neutral, feeding vacuum drying oven, in temperature
Degree is 60-120 DEG C of drying, and drying object is smashed, is sieved, the following powder collection of 40 mesh can be used as biomass absorbent granular material
Material.
3. a kind of method that soluble residual aluminum in water is removed in depth according to claim 1 or 2, which is characterized in that step
The mixing speed of rapid c is 100-150RPM.
4. a kind of method that soluble residual aluminum in water is removed in depth according to claim 1 or 2, which is characterized in that step
The mixing time of rapid c is 60-180 minutes.
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| CN201710400731.9A CN108975440A (en) | 2017-05-31 | 2017-05-31 | A kind of method of soluble residual aluminum in deep removal water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111924806A (en) * | 2020-07-10 | 2020-11-13 | 优耐德引发剂(淮北)有限公司 | Method for reducing content of chloride ions in sodium persulfate |
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