CN107512789A - A kind of process for handling effluent containing heavy metal ions - Google Patents
A kind of process for handling effluent containing heavy metal ions Download PDFInfo
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- CN107512789A CN107512789A CN201710868798.5A CN201710868798A CN107512789A CN 107512789 A CN107512789 A CN 107512789A CN 201710868798 A CN201710868798 A CN 201710868798A CN 107512789 A CN107512789 A CN 107512789A
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- heavy metal
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- metal ions
- waste water
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
A kind of process for handling effluent containing heavy metal ions of offer of the invention, uses discarded autoclave aerated concrete building block as raw material, through Mechanical Crushing, activates grinding, air-flow separation, screens and obtains heavy metals removal agent.It is mixed with distilled water, suspension is formed after mechanical agitation, separation of solid and liquid is carried out using gravitational settling mode, and it is fine droplets to be atomized gained supernatant with pressure-air, formed fine droplets carry out " liquid-liquid " reaction after being mixed in the form of high-speed jet with heavy metal wastewater thereby, filtered after end, you can remove harmful heavy metal ions in waste water, while reclaim the filtrate containing heavy metal element.The present invention can effectively remove Cu in waste water2+、Zn2+、Ni2+、Cr3+Plasma, effect stability；Reaction time is short, can operate at room temperature；The advantages that heavy metal sewage sludge discharge capacity can effectively be reduced, while the recycling new way of a high value is also provided for discarded autoclave aerated concrete building block.
Description
Technical field
The present invention relates to utilization of waste as resource and technical field of heavy metal wastewater treatment, and in particular to one kind is based on useless
Abandon the process of the heavy metal wastewater thereby remover of autoclave aerated concrete building block.
Background technology
Autoclaved aerated concrete block is to use calcareous material（Such as cement, lime）And siliceous material（As sand, flyash,
Slag）Dispensing in add aluminium powder and make air-entrainment, through adding water stirring, moulding by casting, expansion of getting angry, precuring cutting, then through high pressure
The porous silicate building block that steam curing forms.Autoclave aerated concrete building block is a kind of energy-conserving and environment-protective material tool of superior performance
Have that incubation and thermal insulation function is good, intensity is reliable, efficiency of construction is high, energy consumption is low, wall pipeline buries solid and reliable, raw material
The advantages that source is extensive.2005 Nian9Yue State Council exist《On being pushed further into materials for wall innovation and promoting the logical of energy saving building
Know》In be distinctly claimed the end of the year 2010 all cities and will prohibit the use of solid clay brick, this is autoclave aerated concrete building block again
The development of industry provides unprecedented opportunity to develop.《Air entrained concrete industry " 12 " thinking of development》Point out, 2009
Year, Chinese air-entrained concrete building block annual production reaches 3,1,000,000 m3, to autoclave aerated concrete building block annual production in 2015
Reach 39,600,000 m3.Compared with solid clay brick, 80.6 ten thousand tons of standard coals of energy consumption are saved, CO2 is reduced and discharges 1,680,000 tons,
Reduce SO2 and discharge 1.26 ten thousand tons, reduction, which is baked bricks, ruins 7,750 mu of field.But due to process equipment and quality management in production process
Level is limited, and such as rest, cut, can produce the mould that collapses, fragmentation, crackle during steam pressure etc. the defects of, is generated largely not
Certified products；The sampling check for quality number of national each province's autoclave aerated concrete building block is retrieved it has been found that sampling observation disqualification rate is mostly 10%
More than.Because the air entrained concrete daily output is big, this causes the waste products of many air entrained concrete enterprises, and pile up like a mountain, into enterprise's head
The problem of pain.Meanwhile with the continuous quickening of Chinese Urbanization paces, the especially high speed development in house real estate field,
New building interior decoration, old building wall, which removes operation etc., can all produce the discarded steam-pressing aero-concrete block of flood tide
Block, turn into one of important composition of China's building waste.Its substantial amounts of accumulation not only land occupation resource, and environmentally safe
Bring larger negative effect.Furthermore steam-pressing aero-concrete needs the HTHP of a few hours to support in process of production in itself
Shield, substantial amounts of heat energy is consumed with the hydrated product of crystal formation needed for generation, during this.To sum up, to discarded steam pressurized mixed
Solidifying earth building blocks carry out recycling, and it is a major issue for being worth research to excavate its potential high added value.Its is substantial amounts of
Accumulation not only land occupation resource, and it is environmentally safe also bring larger negative effect, also result in the huge wasting of resources.
The research of utilization of steam-pressing aero-concrete is relatively fewer, and existing research is concentrated on to prepare again and built substantially
Material Field is built, more single using form, application surface is narrower.For example, high-temperature activation discards steam-pressing aero-concrete block again
Block prepares pozzolanic activity admixture, although this technology provide one for discarded steam-pressing aero-concrete recycling can
Capable Technology Ways, but its activation process generally requires to carry out high-temperature process, technical process becomes complicated, add energy consumption and into
This, reduces the added value of recycling.Having studied also simultaneously has discarded autoclave aerated concrete building block making
Roofing heat insulating material, but it needs to be used in combination with foam concrete, which increase the complexity of technique.
Heavy metal is the important element of the ecosphere, and the various heavy metal elements that contain are in mankind's industrial and agricultural production and daily life
Play important role.But picked up in mine, the field such as smelting and processing of metals, plating electrolysis, medicine, paint pigment production is made
Into the discharge of plurality of heavy metal waste water.Though the definition of heavy metal is not very strict, the weight for having overt toxicity to biology is primarily referred to as
Metallic element, such as mercury, cadmium, lead and " metalloid "-arsenic.These heavy metals can not be decomposed in water, and people drinks rear toxicity
Amplification, accumulated after entering human body by food chain in human body, cause human normal in disorder and produce various diseases；This
Outside, in human body with protein and various enzymes strong interaction can occur for heavy metal, them is lost activity, it is also possible to
Accumulated for a long time in some organs of human body, when the limit being resistant to beyond human body, can cause human body acute poisoning, it is subacute in
The harm such as poison, slow poisoning seriously endanger health, health are seriously endangered, so heavy metal waste water is effectively controlled
Reason is very necessary.And in processing procedure, it is often necessary to add the materials such as molysite, antalkali, adsorbent and gone
Remove, pharmaceutical material expense turns into the important component of heavy metal containing wastewater treatment cost, and research and development removal efficiency is high, price is low
The problem of honest and clean, energy-conserving profit waste novel heavy metal remover is in the urgent need to address.
The content of the invention
For deficiencies of the prior art, it is an object of the invention to provide one kind to handle effluent containing heavy metal ions
Process, i.e., based on discarded autoclave aerated concrete building block prepare heavy metals removal agent application, solve heavy metal give up
Water process uses the high problem of chemical agent cost；Solves the environmental pollution of discarded steam-pressing aero-concrete simultaneously, to realize
Recycling provides a new approach.
Solves above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of technique for handling effluent containing heavy metal ions
Method, comprise the following steps：
1）Discarded autoclave aerated concrete building block is used as raw material, separates and screens and obtain through Mechanical Crushing, activation grinding, air-flow
Heavy metals removal agent；Contain Cu for removing2+、Zn2+、Ni2+And/or Cr3+Heavy metal wastewater thereby heavy metal ion；
2）Above-mentioned active particle is taken to be mixed with distilled water by weight for 1/1000 ~ 10/1000, shape after 3 ~ 60min of high-speed stirred
Into suspension, separation of solid and liquid is carried out using gravitational settling mode after standing, the solution after separation is with pressure-air with liquid makings amount
Than for 0.1 ~ 2 ratio mixed aerosol, making fine droplets；
3）Droplet after atomization is pressed 1 in the form of high-speed jet with heavy metal ion-containing waste water:5~1:50 than quick mixing
And carry out separation of solid and liquid after reacting 2 ~ 50min；The concentration of various heavy metal ion in detection filtering resulting solution, you can in assessment
State actual processing effect of the technique for heavy metal wastewater thereby；
4）Filter and collect sediment after reaction, dried in vacuum drying chamber, that is, obtain the regenerant containing heavy metal element；
Utilize X-ray diffraction power spectrum（EDS）Elementary analysis is carried out to it, to determine the content of valuable metal element contained therein.
Further, the step 2）Middle gravitational settling mode is the glass cylinder using a conical bottom, by the outstanding of preparation
Turbid is continuously fed into below cylinder center's liquid level, and clear liquid overflows through periphery, and SS is gradual due to self gravitation effect
A bottom is sink to, and then realizes the process of separation of solid and liquid.The step 3）It is at a high speed that fine droplets flow velocity is 2m/s ~ 30m/s.
Compared with prior art, the present invention has the advantages that：
1st, the present invention prepares heavy metals removal agent using discarded steam-pressing aero-concrete, it is not necessary to high-temperature activation processing, it is not necessary to
Compound other materials, preparation technology is simple, removal of heavy metal ions efficiency high, available for life of the improvement containing heavy metal ion
With water, industrial discharge water etc..See while apply patent of invention " a kind of process of preparing of removal of heavy metal ions agent and its
Using ", the utilization ways of a high added value are provided for the recycling of discarded concrete building block, are heavy metal containing sewage
It is simple that improvement provides a kind of cheap cost, energy-conserving and environment-protective, technique, the high new material of removal efficiency.The present invention is also useless simultaneously
Abandon autoclave aerated concrete building block provide one environmental benefit be good, economic value added is high, the utilization that " poison can be controlled with useless " it is new
Approach；Also the improvement for water bodys containing heavy metal such as China river, lake, industrial and life contaminated waters provide a kind of wide material sources,
Cheap and easy to get, green new material.
2nd, the present invention provides that an environmental benefit is good, economic value added is high, can to discard autoclave aerated concrete building block
With the utilization new way of " controlling poison with useless "；Also it is the improvement of the water bodys containing heavy metal such as China river, lake, industrial and life contaminated water
Provide a kind of wide material sources, cheap and easy to get, green new material.Because steam-pressing aero-concrete is that a kind of density is more
Hole, stomata globulate, and the porous material being evenly distributed, for its porosity up to 70%~80%, average pore size is about 1mm, frangible easy
Mill, it is easily dispersed after adding appropriate surface active composition as the powder with large specific surface area.It is discarded steam pressurized mixed
The eakleite that main mineral composition synthesizes at high temperature under high pressure for silica with calcium oxide in solidifying soil（Xonotite）With
Tobermorite（Tobermorite）Deng, due to its form it is changeable and dissolved with elements such as micro Fe, K, Na, Ti so that its
Crystallinity is poor, there is the specific surface energy that comparison is high, and chemisorbed is easily produced when being contacted with heavy metal ions in wastewater.
Brief description of the drawings
Removal of heavy metal ions agent surface microcell energy spectrum analysis schematic diagram after Fig. 1 reactions
Fig. 2 contains Cu using discarded steam-pressing aero-concrete processing2+The removal effect of waste water
Fig. 3 contains Cr using discarded steam-pressing aero-concrete processing3+The removal effect of waste water
Fig. 4 contains Zn using discarded steam-pressing aero-concrete processing2+The removal effect of waste water
Fig. 5 contains Ni using discarded steam-pressing aero-concrete processing2+The removal effect of waste water.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiment 1
1）Discarded autoclave aerated concrete building block is carried out broken using small-sized hammer mill and controls discharging-material size≤6mm；
Material after will be broken carries out ball-milling treatment after adding ball mill, and lignosulfonates 0.06% are added in mechanical milling process
~0.09%, ethylene glycol 0.02~0.08%, the grade of triisopropanolamine 0.03~0.1% surfactant carries out Dispersion on surface processing；
It is 20~50min to control Ball-milling Time simultaneously；Carried out with gas flow sizing machine selecting powder and separation after ball milling, and collect particle diameter≤
80um particle, that is, removal of heavy metal ions agent is made.Referring to a kind of patent of invention " removal of heavy metal ions agent of application simultaneously
Preparation method and applications ".
2）Take heavy metals removal agent fine powder prepared by above-mentioned discarded steam-pressing aero-concrete with distilled water by 0.5/1000,1/
1000th, 2/1000,3/1000,4/1000,5/1000, ratio mixing, high-speed stirred forms suspension after 20 minutes, profit after standing
Separation of solid and liquid is carried out with gravitational settling mode, the solution after separation is 0.2 mixed aerosol by liquid gas mass ratio with pressure-air, is made
Turn into fine droplets
3）Droplet after atomization is contained into Cu in the form of high-speed jet with what certain chemical plant was extracted2+For 100mg/L heavy metal
Waste water is using mass ratio as 1:10 ratio mixing, is quickly mixed with 10m/s relative velocities and reacts 15min, then carry out solid-liquid point
From；With reference to GB/T7475-1987《Copper in Water, zinc, lead, Cadmium detrmination》Specified in method utilize atomic absorption spectrophotometer
Determine Cu in separating obtained supernatant2+Concentration, as a result as shown in Figure 2.It was found from figure, under the conditions of a series of solid-to-liquid ratios, all
Cu in waste water can effectively be removed2+Content, and when solid-to-liquid ratio is 3/1000, the Cu in waste water2+Content already close to 0mg/L,
It can be seen that the Cu in waste water can be effectively removed using the technique2+。
4）Filter and collect sediment after reaction, dried in vacuum drying chamber, that is, obtain the regenerant containing Cu elements；
Utilize X-ray diffraction power spectrum（EDS）Elementary analysis is carried out to it, to determine the content of Cu elements contained therein, as a result such as the institute of table 1
Show.
Embodiment 2
1）Discarded autoclave aerated concrete building block is carried out broken using small-sized hammer mill and controls discharging-material size≤6mm；
Material after will be broken carries out ball-milling treatment after adding ball mill, and lignosulfonates 0.06% are added in mechanical milling process
~0.09%, ethylene glycol 0.02~0.08%, the grade of triisopropanolamine 0.03~0.1% surfactant carries out Dispersion on surface processing；
It is 20~50min to control Ball-milling Time simultaneously；Carried out with gas flow sizing machine selecting powder and separation after ball milling, and collect particle diameter≤
80um particle, that is, removal of heavy metal ions agent is made.Referring to a kind of patent of invention " removal of heavy metal ions agent of application simultaneously
Preparation method and applications ".
2）Take heavy metals removal agent fine powder prepared by above-mentioned discarded steam-pressing aero-concrete with distilled water by 0.5/1000,1/
1000th, 2/1000,3/1000,4/1000,5/1000 ratio mixes, and high-speed stirred forms suspension after 20 minutes, profit after standing
Separation of solid and liquid is carried out with gravitational settling mode, the solution after separation is 0.5 mixed aerosol by liquid gas mass ratio with pressure-air, is made
Turn into different solid than a series of fine droplets.
3）Droplet after above-mentioned series atomization is contained into Cr in the form of high-speed jet with what certain chemical plant was extracted3+Waste water with
Mass ratio is 1:15 ratio mixing, is quickly mixed with 20m/s relative velocities and reacts 20min, then carry out separation of solid and liquid；Ginseng
Examine HJ757-2015《The measure atomic absorption spectrophotometry of water quality chromium》Specified in method utilize Flame Atomic Absorption Spectrometry
Cr in the separating obtained supernatant of spectrophotometric determination3+Concentration, as a result as shown in Figure 3.It was found from figure, in a series of solid-to-liquid ratios
Under the conditions of, it all can effectively reduce Cr in waste water3+Content, and when solid-to-liquid ratio is 2/1000, the Cr in waste water3+Content is
Close to 0mg/L, it is seen that can effectively remove the Cr in waste water using the technique3+。
4）Filter and collect sediment after reaction, dried in vacuum drying chamber, that is, obtain the regenerant containing Cr elements；
Utilize X-ray diffraction power spectrum（EDS）Elementary analysis is carried out to it, to determine the content of Cr elements contained therein, as a result such as the institute of table 1
Show.
Embodiment 3
1）Discarded autoclave aerated concrete building block is carried out broken using small-sized hammer mill and controls discharging-material size≤6mm；
Material after will be broken carries out ball-milling treatment after adding ball mill, and lignosulfonates 0.06% are added in mechanical milling process
~0.09%, ethylene glycol 0.02~0.08%, the grade of triisopropanolamine 0.03~0.1% surfactant carries out Dispersion on surface processing；
It is 20~50min to control Ball-milling Time simultaneously；Carried out with gas flow sizing machine selecting powder and separation after ball milling, and collect particle diameter≤
80um particle, that is, removal of heavy metal ions agent is made.
2）Take heavy metals removal agent fine powder prepared by above-mentioned discarded steam-pressing aero-concrete with distilled water by 0.5/1000,1/
1000th, 2/1000,3/1000,4/1000,5/1000,6/1000,7/1000,8/1000 ratio mixes, high-speed stirred 30 minutes
After form suspension, carry out separation of solid and liquid using gravitational settling mode after standing, the solution after separation presses liquid gas with pressure-air
Mass ratio is 1 mixed aerosol, make different solid than a series of fine droplets.
3）Droplet after above-mentioned series atomization is contained into Zn in the form of high-speed jet with what certain chemical plant was extracted2+Ion gives up
Water is using mass ratio as 1:20 ratio mixing, is quickly mixed with 25m/s relative velocities and reacts 30min, then carry out separation of solid and liquid；
With reference to GB/T7475-1987《Copper in Water, zinc, lead, Cadmium detrmination》Specified in method utilize atomic absorption spectrophotometer survey
Zn in fixed separating obtained supernatant2+Concentration, as a result as shown in Figure 4.It was found from figure, under the conditions of a series of solid-to-liquid ratios, all may be used
Effectively reduce Zn in waste water2+Content, and when solid-to-liquid ratio is 7/1000, the Zn in waste water2+Content, can already close to 0mg/L
See the Zn that can be effectively removed using the technique in waste water2+。
4) filter and collect sediment after reaction, dried in vacuum drying chamber, that is, obtain the regenerant containing Zn elements；
Utilize X-ray diffraction power spectrum（EDS）Elementary analysis is carried out to it, to determine the content of Zn elements contained therein, as a result such as the institute of table 1
Show
Embodiment 4
1）Discarded autoclave aerated concrete building block is carried out broken using small-sized hammer mill and controls discharging-material size≤6mm；
Material after will be broken carries out ball-milling treatment after adding ball mill, and lignosulfonates 0.06% are added in mechanical milling process
~0.09%, ethylene glycol 0.02~0.08%, the grade of triisopropanolamine 0.03~0.1% surfactant carries out Dispersion on surface processing；
It is 20~50min to control Ball-milling Time simultaneously；Carried out with gas flow sizing machine selecting powder and separation after ball milling, and collect particle diameter≤
80um particle, that is, removal of heavy metal ions agent is made.
2）Take heavy metals removal agent fine powder prepared by above-mentioned discarded steam-pressing aero-concrete with distilled water by 1/1000,2/
1000th, 3/1000,4/1000,5/1000,6/1000,7/1000,8/1000,9/1000, ratio mixing, high-speed stirred 40 minutes
After form suspension, carry out separation of solid and liquid using gravitational settling mode after standing, the solution after separation presses liquid gas with pressure-air
Mass ratio be 1.5 ratio mixed aerosol, make different solid than a series of fine droplets.
3）Droplet after above-mentioned series atomization is contained into Ni in the form of high-speed jet with what certain chemical plant was extracted2+Ion gives up
Water is using mass ratio as 1:30 ratio mixing, is quickly mixed with 30m/s relative velocities and reacts 40min, then carry out solid-liquid point
From；With reference to GB/T11912-1989《Water quality nickel-silicon nitride》Specified in method using atomic absorption spectrophotometer measure separation
Ni in gained supernatant2+Concentration, as a result as shown in Figure 5.It was found from figure, under the conditions of a series of solid-to-liquid ratios, all can effectively it drop
Ni in low waste water2+Content, and when solid-to-liquid ratio is 7/1000, the Ni in waste water2+Content is already close to 0mg/L, it is seen that uses
The technique can effectively remove the Ni in waste water2+。
4）Filter and collect sediment after reaction, dried in vacuum drying chamber, that is, obtain the regenerant containing Ni elements；
Utilize X-ray diffraction power spectrum（EDS）Elementary analysis is carried out to it, to determine the content of Ni elements contained therein, as a result such as the institute of table 1
Show
Cutting mechanisms and test effect of the present invention
Because steam-pressing aero-concrete is that a kind of density is porous, stomata globulate, and the porous material being evenly distributed, its porosity
Up to 70%~80%, average pore size is about 1mm, frangible easily mill, is easily dispersed after adding appropriate surface active composition as having
The powder of large specific surface area.Exist due to discarding mineral composition main in steam-pressing aero-concrete for silica with calcium oxide
The eakleite synthesized under HTHP（Xonotite）And tobermorite（Tobermorite）Deng because its composition is changeable
And dissolved with elements such as micro Fe, K, Na, Ti so that its crystallinity is poor, there is the specific surface energy that comparison is high, when with heavy metal
Chemisorbed is easily produced during contacted with ions.Surface microcell energy spectrum analysis, heavy metal member are carried out to reacting front and rear reaction product
Plain distribution results are as shown in the table.
Table 1 reacts front and rear removal of heavy metal ions agent Surface energy spectrum analysis
| Cu | Cr | Ni | Zn | |
| Before reaction（Wt%） | 0.41 | 0.00 | 0.34 | 0.41 |
| After reaction（W t %） | 3.93 | 2.03 | 0.77 | 2.08 |
As known from Table 1, before reaction prepared removal of heavy metal ions agent without or with a small amount of heavy metal element（Contained is micro-
Amount heavy metal element is brought into mainly due to the natural minerals contained by discarded autoclave aerated concrete building block）, in weight after reaction
The enrichment of plurality of heavy metal ion is observed in metal ion remover surface analysis（Referring to shown in accompanying drawing 1）, after illustrating reaction
Heavy metal ion in sewage is fixed in removal of heavy metal ions agent by absorption or chemical precipitation.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.
Claims (5)
1. a kind of process for handling effluent containing heavy metal ions, comprises the following steps：
1）Discarded autoclave aerated concrete building block is used as raw material, separates and screens and obtain through Mechanical Crushing, activation grinding, air-flow
Heavy metals removal agent；
2）Above-mentioned active particle is taken to be mixed with distilled water by weight for 1/1000 ~ 10/1000, shape after 3 ~ 60min of high-speed stirred
Into suspension, separation of solid and liquid is carried out using gravitational settling mode after standing, the solution after separation is with pressure-air with liquid makings amount
Than for 0.1 ~ 2 ratio mixed aerosol, making fine droplets；
3）Droplet after atomization is pressed 1 in the form of high-speed jet with heavy metal ion-containing waste water:5~1:50 than quick mixing
And carry out separation of solid and liquid after reacting 2 ~ 50min；The concentration of various heavy metal ion in detection filtering resulting solution, you can in assessment
State actual processing effect of the technique for heavy metal wastewater thereby；
4）Filter and collect sediment after reaction, dried in vacuum drying chamber, that is, obtain the regenerant containing heavy metal element；
Utilize X-ray diffraction power spectrum（EDS）Elementary analysis is carried out to it, to determine the content of valuable metal element contained therein.
2. the process of effluent containing heavy metal ions is handled according to claim 1, it is characterised in that the step 2）It is middle heavy
Power subsidence style is the glass cylinder using a conical bottom, and the suspension of preparation is continuously fed into below cylinder center's liquid level,
Clear liquid overflows through periphery, and SS realizes the mistake of separation of solid and liquid because self gravitation effect is gradually sink to a bottom
Journey.
3. the process of effluent containing heavy metal ions is handled according to claim 1, it is characterised in that the step 3）At a high speed
It is 2m/s ~ 30m/s for fine droplets flow velocity.
4. the process for handling effluent containing heavy metal ions is utilized according to claim 1, it is characterised in that described containing a huge sum of money
It is containing Zn to belong to ion waste water2+、Ni2+、Cu2+Or Cr3+Heavy metal ion, and concentration is more than 100mg/L waste water.
5. the process of effluent containing heavy metal ions is handled according to claim 1, it is characterised in that processing 100ml contains Zn2 +、Ni2+、Cu2+Or Cr3+The optimum activity particle dosage of waste water and concentration more than 100mg/L is followed successively by 0.7g, 0.7g, 0.3g
Or 0.3g, reaction time are 5 ~ 60min：Stirring intensity is:40~250r/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108178268A (en) * | 2017-12-29 | 2018-06-19 | 广州安赛化工有限公司 | Heavy metals removal agent and preparation method thereof |
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| CN104569017A (en) * | 2014-12-31 | 2015-04-29 | 聚光科技(杭州)股份有限公司 | Detection device for heavy metal in water and work method of detection device |
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| CN108178268A (en) * | 2017-12-29 | 2018-06-19 | 广州安赛化工有限公司 | Heavy metals removal agent and preparation method thereof |
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Application publication date: 20171226 |