CN109942139A - It can be quickly by the method and device of heavy metal wastewater thereby recycling - Google Patents
It can be quickly by the method and device of heavy metal wastewater thereby recycling Download PDFInfo
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- CN109942139A CN109942139A CN201910369245.4A CN201910369245A CN109942139A CN 109942139 A CN109942139 A CN 109942139A CN 201910369245 A CN201910369245 A CN 201910369245A CN 109942139 A CN109942139 A CN 109942139A
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Abstract
The invention discloses that heavy metal wastewater thereby can be had water suction by being poured into pipe-line mixer after grille well, PH regulator is added and carries out soda acid reconciliation quickly by the method and device of heavy metal wastewater thereby recycling, further by solution import in mixed reaction pond with Na2S hybrid reaction obtains sulfidising solution, and is conducted into chemical coagulation pond and coagulant is added and be stirred condensation, and obtained solution is added magnetic kind by magnetic kind supply device, makes non magnetic suspended matter in solution and the magnetic flocculation added at magnetic micro- floc sedimentation；It condenses by obtained solution addition flocculant, and is recycled mud magnetic kind using magnetic recycling machine, further remove magnetic micro- floc sedimentation；And import top clean water in sterilization pool by water outlet in flocculation basin, by upper water standardization；And flocculation basin base sludge is imported in sludge dewatering equipment using feed screw and is carried out dehydrating, obtain coagulation recycling.The present invention can to heavy metal-containing waste water rapid precipitation, be separated and recovered from.
Description
Technical field
The present invention relates to technical field of heavy metal wastewater treatment, and in particular to can be quickly by the side of heavy metal wastewater thereby recycling
Method and device.
Background technique
With China's economy, social development, shortage of water resources, water pollution problems are on the rise.Heavy metal wastewater thereby is to one
Environmental pollution most serious and one of maximum industrial wastewater is endangered to the mankind, it is useless that related statistics shows that China's metallic wastewater accounts for about
The 10% of water total emission volumn mostlys come from the industrial processes such as mining, metallurgy, machine-building, chemical industry, electronics, instrument, tool
There is potentially hazardous property, these waste water mainly contain the heavy metal elements such as antimony, copper, lead, zinc, cadmium, arsenic, chromium, if processing is bad,
The heavy metal pollution event that arsenic pollution, cadmium pollution, lead contamination etc. are great to eco-environmental impact will be easily caused.Especially
The heavy metals such as mercury, cadmium, lead, chromium, nickel, copper have significant bio-toxicity, and micro-concentrations can produce toxicity, in microbial action
Under can be converted into the stronger organo-metallic compound of toxicity such as methyl mercury, or be bioaccumulation and human body entered by food chain, make
At slow poisoning.Heavy metal wastewater thereby toxicity is big, is not easy to be metabolized in the environment, and repairs difficult.Therefore, heavy metal is actively developed
Wastewater treatment and reuse new industrial research, effectively removes and to recycle heavy metal in waste water resource imperative.
Heavy metal wastewater thereby traditional treatment method mainly has neutralization precipitation method, sulphide precipitation, ferrite process, ion exchange
Method, solvent extraction, electrolysis method, absorption method, bioanalysis etc..Wherein chemical coagulation-sedimentation method is that the processing of domestic and international metallic wastewater is normal
Method, the technique use lime as neutralizer, generate a large amount of sludge, and the subsequent quantity of slag to be processed is big, is also easy to produce danger
Solid waste, execute-in-place environment are more severe.And because using natural subsidence, the flocculating setting time is long, needs very big sedimentation basin,
Processing system takes up a large area, treatment effeciency is low, goes out water unstable.The heavy metal precipitation object that the technique generates is heavy for hydroxide
It forming sediment, content of beary metal is low, and washing, enrichment are difficult, and cost recovery is high, and recycling value is low, it is generally only used as dangerous waste disposition,
Many occasions limit the application of such technology and product.And ion-exchange, solvent extraction, bioanalysis, membrane separation process etc.,
But due to investing, big, operating cost is high, treatment effect is undesirable, easily causes secondary pollution problems, it is difficult to meet practical work
The processing requirement of journey.
Summary of the invention
It, can be to containing a huge sum of money the purpose of the present invention is to provide can be quickly by the method and device of heavy metal wastewater thereby recycling
Belong to waste water rapid precipitation, be separated and recovered from.
In order to solve the above technical problems, the invention adopts the following technical scheme:
It can be quickly by the method for heavy metal wastewater thereby recycling, comprising the following steps:
S1: impurity that is internal and suspending is removed by heavy metal-containing waste water by grille well, and is mixed by pipeline import pipe
In device；
S2: being mixed heavy metal-containing waste water with PH regulator in pipe-line mixer using sulfurization technology, and adjusting PH is 6-8
The Na for entering mixed reaction pond afterwards and adding simultaneously2S carries out hybrid reaction, and the reaction time is 0.5-2 hours, obtains vulcanizing molten
Liquid；
S3: coagulation is carried out using the coagulant that sulfidising solution in S1 is imported chemical coagulation pond, and added simultaneously by magnetic-coagulation technology
Reaction, reaction time are to obtain coagulation solution in 2-10 minutes；
S4: the magnetic kind that coagulation solution obtained in S3 is imported in magnetic kind coagulating basin, and is added simultaneously carries out magnetic-coagulation reaction, instead
Magnetic miscible fluid was obtained between seasonable for 2-5 minutes；
S5: the flocculant that magnetic miscible fluid obtained in S4 is imported in flocculation tank, and is added simultaneously carries out flocculation reaction, instead
Mixed wadding solution was obtained between seasonable for 2-8 minutes；
S6: wadding solution importing sedimentation basin will be mixed obtained in S5 and will be precipitated, the sedimentation time is to obtain clear liquid and magnetic in 20-60 minutes
Property sludge；Clear liquid is carried out disinfection processing, and it is up to standard after discharge or reuse；By the magnetic sludge after precipitating by magnetic recycling machine into
The recycling of row magnetic kind, the sludge after recycling magnetic kind recycle after dewaterer is dehydrated.
Further, PH regulator can be acid or alkali in the S2 step；Solution in the S2 step after adjusting with
Na2It is mixed when S carries out hybrid reaction using blender agitation, 30~120r/min of revolving speed, stirring grade is 7-8 grades, reaction
Time 15-30min；The Na2S compound concentration is 10-20%；The mixed reaction pond metering pump adds, according to dosage
The removal amount of heavy metal ions in wastewater and the molar ratio of divalent sulfur: 1: 0.5-1:3.0 is added.
Further, aluminium polychloride, bodied ferric sulfate, polyaluminum ferric chloride, three can be used in coagulant in the S3 step
Any one in iron chloride or two kinds of combination of the above, compound concentration 5-10%, metering pump add, dosage 100-500mg/
L；In chemical coagulation pond be equipped with blender, revolving speed 67rp, stir grade 7-8, hydraulic detention time 2-10 minutes.
Further, the Fe of the magnetic kind in the S4 step3O4Content is greater than 60%, and grain is through 80-200 mesh, dosage 8-
100g/L is added by magnetic kind supply device and magnetic kind recycling machine；It is mixed in the magnetic kind coagulating basin using blender, revolving speed
43rp stirs grade 10, hydraulic detention time 2-5 points of kinds.
Further, the flocculant in the S5 step uses anionic polyacrylamide, and molecular weight 800-1200 ten thousand matches
Concentration processed is 1-5 ‰, and metering pump adds, dosage 10-50mg/L；Flocculation tank is mixed using blender, revolving speed
27rp stirs grade 10, hydraulic detention time 2-8 points of kinds.
Further, inclined-tube sedimentation tank or vertical sedimentation tank can be used in sedimentation basin in the S6 step；Plate can be used in dewaterer
Frame filter press or folded spiral shell machine.
Can be quickly by the device of heavy metal wastewater thereby recycling, including pass through the sequentially connected pipe-line mixer of pipeline, mixing
Reaction tank, chemical coagulation pond, magnetic kind coagulating basin, flocculation tank, sedimentation basin and magnetic kind recycling machine and mud field；The pipeline is mixed
Clutch is connected by grille well with extraneous waste water by pipeline；And magnetic kind recycling machine is provided between sedimentation basin and mud field.
Further, the pipe-line mixer is connected with PH regulator tank by pipeline；The mixed reaction pond passes through pipeline
It is connected with Na2S adds tank；The chemical coagulation pond is connected with coagulant dissolution tank by pipeline;Above the magnetic kind coagulating basin
It is provided with magnetic kind supply device；The flocculation tank is connected by pipeline with flocculant dissolving tank.
Further, the mixed reaction pond, chemical coagulation pond, magnetic kind coagulating basin and flocculation tank are provided with inside it
Blender；The sedimentation basin top is provided with water outlet；The magnetic kind recycling machine is connected by pipeline with sludge dewatering equipment, and
Sludge dewatering equipment is connected by conveyer belt with aggregate market.
Compared with prior art, the present invention one of at least has the advantages that:
1. S is both added into heavy metal-containing waste water using sulphide precipitation2-(such as vulcanized sodium) is to form solubility very little
Sulfide precipitation (such as CuS), to go the processing method of removing heavy metals.With simple process and low cost, easy to operate, processing
Range is wide, the high advantage of removal of heavy metal ions rate.
2. the metal sulphide contents of precipitate formed is high, impurity is few, washing classification, richness are achieved that by floatation process
The purpose of collection substantially increases recycling value, this is that other traditional process for treating heavy-metal waste water are irrealizable.
3. sulfurization technology has the advantages that at low cost, easy to operate.But there are the following problems: sulfide precipitation particle
It is small, colloid is easily formed, brings difficulty to separation.Therefore, the present invention can solve problem above using magnetic-coagulation technology.
4. remove suspended matter in solution using magnetic-coagulation technology, have and drop turbid and clean-up effect, by flocculant PAC,
PAM makes non magnetic suspended matter in waste water and the magnetic flocculation added at magnetic micro- floc sedimentation, and magnetic-adsorption is utilized to remove magnetic micro- wadding
Group, purifying water body；Magnetic kind is recycled after separating with water pollutant.
Detailed description of the invention
Fig. 1 is apparatus of the present invention connection figure.
In figure: 1- pipe-line mixer, 2- mixed reaction pond, 3- chemical coagulation pond, 4- magnetic kind coagulating basin, 5- flocculation reaction
Pond, 6- sedimentation basin, 7- magnetic kind recycling machine, 8- mud field, 9- sludge dewatering equipment, 10-PH regulator tank, 11-Na2S addition tank,
12- coagulant dissolution tank, 13- magnetic kind supply device, 14- flocculant dissolving tank, 15- water outlet, 16- grille well.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1:
It can be quickly by the method for heavy metal wastewater thereby recycling, comprising the following steps:
S1: heavy metal-containing waste water is removed impurity that is internal and suspending by grille well 16, and mixed by pipeline import pipe
In clutch 1；
S2: being mixed heavy metal-containing waste water with PH regulator in pipe-line mixer 1 using sulfurization technology, and adjusting PH is 6
The Na for entering mixed reaction pond 2 afterwards and adding simultaneously2S carries out hybrid reaction, and the reaction time is 0.5 hour, obtains sulfidising solution,
PH regulator can be acid or alkali；Solution and Na in the S2 step after adjusting2S stirred when hybrid reaction using blender
Dynamic mixing, revolving speed 30r/min, stirring grade are 7 grades, reaction time 15min；The Na2S compound concentration is 10%；It is described mixed
It closes reaction tank metering pump to add, dosage is according to the removal amount of heavy metal ions in wastewater and the molar ratio of divalent sulfur: 1:
0.5 adds；
S3: coagulation is carried out using the coagulant that sulfidising solution in S1 is imported chemical coagulation pond 3, and added simultaneously by magnetic-coagulation technology
Reaction, reaction time are to obtain coagulation solution in 2 minutes, and aluminium polychloride, bodied ferric sulfate, aluminium polychloride can be used in coagulant
Any one in iron, ferric trichloride or two kinds of combination of the above, compound concentration 5%, metering pump adds, dosage 100mg/L；
In chemical coagulation pond be equipped with blender, revolving speed 67rp, stir grade 7, hydraulic detention time 2 minutes；
S4: the magnetic kind that coagulation solution obtained in S3 is imported in magnetic kind coagulating basin 4, and is added simultaneously carries out magnetic-coagulation reaction,
Reaction time is to obtain magnetic miscible fluid, the Fe of magnetic kind in 2 minutes3O4Content is greater than 60%, and grain is through 80 mesh, dosage 8g/L, by magnetic
Kind supply device and magnetic kind recycling machine add；It is mixed in the magnetic kind coagulating basin 4 using blender, revolving speed 43rp, stirring etc.
Grade 10, hydraulic detention time 2 divides kind；
S5: the flocculant that magnetic miscible fluid obtained in S4 is imported in flocculation tank 5, and is added simultaneously carries out flocculation reaction,
Reaction time is to obtain within 2 minutes mixed wadding solution, and flocculant uses anionic polyacrylamide, molecular weight 8,000,000, and compound concentration is
1 ‰, metering pump adds, dosage 10mg/L；Flocculation tank 5 is mixed using blender, revolving speed 27rp, stirs grade
10, hydraulic detention time 2 divides kind；
S6: wadding solution importing sedimentation basin 7 will be mixed obtained in S5 and will be precipitated, the sedimentation time is to obtain clear liquid and magnetism in 20 minutes
Sludge；Clear liquid is carried out disinfection processing, and it is up to standard after discharge or reuse；By the magnetic sludge after precipitating by magnetic recycling machine 7 into
The recycling of row magnetic kind, the sludge after recycling magnetic kind recycle after the dehydration of dewaterer 8, and inclined tube can be used in sedimentation basin 6
Sedimentation basin or vertical sedimentation tank；Plate and frame filter press or folded spiral shell machine can be used in dewaterer, using sulphide precipitation both to containing a huge sum of money
Belong in waste water and S is added2-(such as vulcanized sodium) to form the sulfide precipitation (such as CuS) of solubility very little, to remove removing heavy metals
Processing method.With simple process and low cost, easy to operate, process range is wide, the high advantage of removal of heavy metal ions rate.
Embodiment 2:
It can be quickly by the method for heavy metal wastewater thereby recycling, comprising the following steps:
S1: heavy metal-containing waste water is removed impurity that is internal and suspending by grille well 16, and mixed by pipeline import pipe
In clutch 1；
S2: being mixed heavy metal-containing waste water with PH regulator in pipe-line mixer 1 using sulfurization technology, and adjusting PH is 7
The Na for entering mixed reaction pond 2 afterwards and adding simultaneously2S carries out hybrid reaction, and the reaction time is 1 hour, obtains sulfidising solution, PH
Regulator can be acid or alkali；Solution and Na in the S2 step after adjusting2S stirred when hybrid reaction using blender
Mixing, revolving speed 80r/min, stirring grade are 7.5 grades, reaction time 25min；The Na2S compound concentration is 15%；It is described mixed
It closes reaction tank metering pump to add, dosage is according to the removal amount of heavy metal ions in wastewater and the molar ratio of divalent sulfur: 1:2.0
It adds；
S3: coagulation is carried out using the coagulant that sulfidising solution in S1 is imported chemical coagulation pond 3, and added simultaneously by magnetic-coagulation technology
Reaction, reaction time are to obtain coagulation solution in 8 minutes, and aluminium polychloride, bodied ferric sulfate, aluminium polychloride can be used in coagulant
Any one in iron, ferric trichloride or two kinds of combination of the above, compound concentration 8%, metering pump adds, dosage 350mg/L；
In chemical coagulation pond be equipped with blender, revolving speed 67rp, stir grade 7, hydraulic detention time 6 minutes；
S4: the magnetic kind that coagulation solution obtained in S3 is imported in magnetic kind coagulating basin 4, and is added simultaneously carries out magnetic-coagulation reaction,
Reaction time is to obtain magnetic miscible fluid, the Fe of magnetic kind in 3 minutes3O4Content is greater than 60%, and grain is through 100 mesh, dosage 60g/L, by
Magnetic kind supply device and magnetic kind recycling machine add；It is mixed in the magnetic kind coagulating basin 4 using blender, revolving speed 43rp, stirring
Grade 10, hydraulic detention time 3 divide kind；
S5: the flocculant that magnetic miscible fluid obtained in S4 is imported in flocculation tank 5, and is added simultaneously carries out flocculation reaction,
Reaction time is to obtain within 6 minutes mixed wadding solution, and flocculant uses anionic polyacrylamide, molecular weight 10,000,000, compound concentration
It is 3 ‰, metering pump adds, dosage 30mg/L；Flocculation tank 5 is mixed using blender, revolving speed 27rp, stirring etc.
Grade 10, hydraulic detention time 6 divides kind；
S6: wadding solution importing sedimentation basin 7 will be mixed obtained in S5 and will be precipitated, the sedimentation time is to obtain clear liquid and magnetism in 40 minutes
Sludge；Clear liquid is carried out disinfection processing, and it is up to standard after discharge or reuse；By the magnetic sludge after precipitating by magnetic recycling machine 7 into
The recycling of row magnetic kind, the sludge after recycling magnetic kind recycle after the dehydration of dewaterer 8, and inclined tube can be used in sedimentation basin 6
Sedimentation basin or vertical sedimentation tank；Plate and frame filter press or folded spiral shell machine can be used in dewaterer, using sulphide precipitation both to containing a huge sum of money
Belong in waste water and S is added2-(such as vulcanized sodium) to form the sulfide precipitation (such as CuS) of solubility very little, to remove removing heavy metals
Processing method.With simple process and low cost, easy to operate, process range is wide, the high advantage of removal of heavy metal ions rate.
Embodiment 3:
It can be quickly by the method for heavy metal wastewater thereby recycling, comprising the following steps:
S1: heavy metal-containing waste water is removed impurity that is internal and suspending by grille well 16, and mixed by pipeline import pipe
In clutch 1；
S2: being mixed heavy metal-containing waste water with PH regulator in pipe-line mixer 1 using sulfurization technology, and adjusting PH is 8
The Na for entering mixed reaction pond 2 afterwards and adding simultaneously2S carries out hybrid reaction, and the reaction time is 2 hours, obtains sulfidising solution, PH
Regulator can be acid or alkali；Solution and Na in the S2 step after adjusting2S stirred when hybrid reaction using blender
Mixing, revolving speed 120r/min, stirring grade are 8 grades, reaction time 30min；The Na2S compound concentration is 20%；It is described mixed
It closes reaction tank metering pump to add, dosage is according to the removal amount of heavy metal ions in wastewater and the molar ratio of divalent sulfur: 1:
3.0 adding；
S3: coagulation is carried out using the coagulant that sulfidising solution in S1 is imported chemical coagulation pond 3, and added simultaneously by magnetic-coagulation technology
Reaction, reaction time are to obtain coagulation solution in 10 minutes, and aluminium polychloride, bodied ferric sulfate, polyaluminium can be used in coagulant
Any one in ferro-aluminum, ferric trichloride or two kinds of combination of the above, compound concentration 10%, metering pump adds, dosage 500mg/
L；In chemical coagulation pond be equipped with blender, revolving speed 67rp, stir grade 8, hydraulic detention time 10 minutes；
S4: the magnetic kind that coagulation solution obtained in S3 is imported in magnetic kind coagulating basin 4, and is added simultaneously carries out magnetic-coagulation reaction,
Reaction time is to obtain magnetic miscible fluid, the Fe of magnetic kind in 5 minutes3O4Content is greater than 60%, and grain is through 200 mesh, dosage 100g/L, by
Magnetic kind supply device and magnetic kind recycling machine add；It is mixed in the magnetic kind coagulating basin 4 using blender, revolving speed 43rp, stirring
Grade 10, hydraulic detention time 5 divide kind；
S5: the flocculant that magnetic miscible fluid obtained in S4 is imported in flocculation tank 5, and is added simultaneously carries out flocculation reaction,
Reaction time is to obtain within 8 minutes mixed wadding solution, and flocculant uses anionic polyacrylamide, molecular weight 12,000,000, compound concentration
It is 5 ‰, metering pump adds, dosage 50mg/L；Flocculation tank 5 is mixed using blender, revolving speed 27rp, stirring etc.
Grade 10, hydraulic detention time 8 divides kind；
S6: wadding solution importing sedimentation basin 7 will be mixed obtained in S5 and will be precipitated, the sedimentation time is to obtain clear liquid and magnetism in 60 minutes
Sludge；Clear liquid is carried out disinfection processing, and it is up to standard after discharge or reuse；By the magnetic sludge after precipitating by magnetic recycling machine 7 into
The recycling of row magnetic kind, the sludge after recycling magnetic kind recycle after the dehydration of dewaterer 8, and inclined tube can be used in sedimentation basin 6
Sedimentation basin or vertical sedimentation tank；Plate and frame filter press or folded spiral shell machine can be used in dewaterer, using sulphide precipitation both to containing a huge sum of money
Belong in waste water and S is added2-(such as vulcanized sodium) to form the sulfide precipitation (such as CuS) of solubility very little, to remove removing heavy metals
Processing method.With simple process and low cost, easy to operate, process range is wide, the high advantage of removal of heavy metal ions rate.
Embodiment 4:
Heavy metal recovery processing can be carried out to electroplating wastewater, electroplating wastewater quickly by the method for heavy metal wastewater thereby recycling:
PH5.8, nickel 6.00mg/L, 223 mg/ of copper are mixed through pipe-line mixer 2 with PH regulator, are adjusted after PH is 6-8 and are entered
Mixed reaction pond 4 and the Na added simultaneously2S mix instead, and dosage is 1 for the use molar ratio of the heavy metal and sulphur:
1.5, the reaction time is 40 minutes；Water outlet enters chemical coagulation pond 6, carries out coagulating with the coagulant added simultaneously, adds
Amount is 300 mg/L, and the reaction time is 5 minutes；Water outlet enters magnetic-coagulation pond 9, and it is anti-to carry out magnetic-coagulation with the magnetic kind added simultaneously
It answers, first time dosage 50g/L, the reaction time is 3 minutes；Water outlet enters flocculation basin 12, carries out with the flocculant added simultaneously
Flocculation reaction, dosage are 20 mg/L, and the reaction time is 6 minutes；Water outlet enters sedimentation basin 15 and is precipitated, and the sedimentation time is
20 minutes；Supernatant is discharged PH7.8, nickel 0.09mg/L, 0.15 mg/ of copper, and the magnetic sludge after precipitating is carried out through magnetic recycling machine 17
The recycling of magnetic kind, the sludge after recycling magnetic kind recycle after the dehydration of dewaterer 16.
Embodiment 5:
Heavy metal recovery processing can be carried out to beneficiation wastewater, beneficiation wastewater quickly by the method for heavy metal wastewater thereby recycling:
PH6.8, zinc 50mg/L, lead 20mg/L, the Na for entering mixed reaction pond after pipe-line mixer and adding simultaneously2S is mixed
Instead, dosage is 1:1.0 for the use molar ratio of the heavy metal and sulphur, and the reaction time is 30 minutes；It is mixed that water outlet enters chemistry
Solidifying pond carries out coagulating with the coagulant added simultaneously, and dosage is 200 mg/L, and the reaction time is 3 minutes；Water outlet enters
Magnetic-coagulation pond carries out magnetic-coagulation with the magnetic kind added simultaneously and reacts, and first time dosage 20g/L, the reaction time is 2.5 minutes；
Water outlet enters flocculation basin, and flocculation reaction is carried out with the flocculant added simultaneously, and dosage is 15 mg/L, and the reaction time is 5 points
Clock；Water outlet enters sedimentation basin and is precipitated, and the sedimentation time is 20 minutes；Supernatant is discharged PH7.0, zinc 0.18mg/L, lead
0.02mg/L, the magnetic sludge after precipitating carry out the recycling of magnetic kind through magnetic recycling machine, and the sludge after recycling magnetic kind is through de-
It is recycled after water dispenser dehydration.
Embodiment 6:
Can be quickly by the device of heavy metal wastewater thereby recycling, including pass through the sequentially connected pipe-line mixer 1 of pipeline, hybrid reaction
Pond 2, chemical coagulation pond 3, magnetic kind coagulating basin 4, flocculation tank 5, sedimentation basin 6 and magnetic kind recycling machine 7 and mud field 8；The pipe
Road mixer 1 is connected by grille well 16 with extraneous waste water by pipeline；And magnetic is provided between sedimentation basin 6 and mud field 8
Kind recycling machine 7；The pipe-line mixer 1 is connected with PH regulator tank 10 by pipeline；The mixed reaction pond 2 is connected by pipeline
It is connected to Na2S adds tank 11；The chemical coagulation pond 3 is connected with coagulant dissolution tank 12 by pipeline;The magnetic kind coagulating basin 4
Top is provided with magnetic kind supply device 13；The flocculation tank 5 is connected by pipeline with flocculant dissolving tank 14；The mixing
Reaction tank 2, chemical coagulation pond 3, magnetic kind coagulating basin 4 and flocculation tank 5 are provided with blender inside it；The sedimentation basin 6
Top is provided with water outlet 15；The magnetic kind recycling machine 7 is connected by pipeline with sludge dewatering equipment 9, and sludge dewatering equipment 9 is logical
It crosses conveyer belt to be connected with aggregate market, suspended matter in solution is removed using magnetic-coagulation technology, have and drop turbid and clean-up effect, lead to
Crossing flocculant PAC, PAM makes non magnetic suspended matter in waste water and the magnetic flocculation added at magnetic micro- floc sedimentation, utilizes magnetic-adsorption
The magnetic micro- floc sedimentation of removal, purifying water body；Magnetic kind is recycled after separating with water pollutant.
" one embodiment ", " another embodiment ", " embodiment ", " preferred implementation spoken of in the present specification
Example " etc., referring to combining specific features, structure or the feature of embodiment description includes describing extremely in the application generality
In few one embodiment.It is not centainly to refer to the same embodiment that statement of the same race, which occur, in multiple places in the description.Into one
For step, when describing a specific features, structure or feature in conjunction with any embodiment, what is advocated is to combine other implementations
Example realizes that this feature, structure or feature are also fallen within the scope of the present invention.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations will fall in this Shen
It please be within disclosed scope and spirit.More specifically, disclose in the application, drawings and claims in the range of, can
With the building block and/or a variety of variations and modifications of layout progress to theme combination layout.In addition to building block and/or layout
Outside the modification and improvement of progress, to those skilled in the art, other purposes also be will be apparent.
Claims (9)
1. can be quickly by the method for heavy metal wastewater thereby recycling, it is characterised in that: the following steps are included:
S1: impurity that is internal and suspending is removed by heavy metal-containing waste water by grille well (16), and passes through pipeline import pipe
In mixer (1)；
S2: being mixed heavy metal-containing waste water with PH regulator in pipe-line mixer (1) using sulfurization technology, is adjusted PH and is
Enter Na mixed reaction pond (2) and added simultaneously after 6-82S carries out hybrid reaction, and the reaction time is 0.5-2 hours, obtains sulphur
Change solution；
S3: sulfidising solution in S1 is imported by chemical coagulation pond (3) using magnetic-coagulation technology, and the coagulant added simultaneously is mixed
Solidifying reaction, reaction time are to obtain coagulation solution in 2-10 minutes；
S4: it is anti-that the magnetic kind that coagulation solution obtained in S3 is imported in magnetic kind coagulating basin (4), and is added simultaneously carries out magnetic-coagulation
It answers, the reaction time is to obtain magnetic miscible fluid in 2-5 minutes；
S5: magnetic miscible fluid obtained in S4 is imported in flocculation tank (5), and the flocculant added simultaneously flocculate instead
It answers, the reaction time is to obtain within 2-8 minutes mixed wadding solution；
S6: wadding solution importing sedimentation basin (7) will be mixed obtained in S5 and precipitated, the sedimentation time is to obtain clear liquid in 20-60 minutes
And magnetic sludge；Clear liquid is carried out disinfection processing, and it is up to standard after discharge or reuse；Magnetic sludge after precipitating is recycled by magnetic
Machine (7) carries out the recycling of magnetic kind, and the sludge after recycling magnetic kind recycles after dewaterer (8) dehydration.
2. according to claim 1 can be quickly by the method for heavy metal wastewater thereby recycling, it is characterised in that: the S2 step
Middle PH regulator can be acid or alkali；Solution and Na in the S2 step after adjusting2S carries out using blender when hybrid reaction
Agitation mixing, 30~120r/min of revolving speed, stirring grade are 7-8 grades, reaction time 15-30min；The Na2S prepares dense
Degree is 10-20%；The mixed reaction pond metering pump adds, and dosage is the removal amount and two according to heavy metal ions in wastewater
The molar ratio of valence sulphur: 1: 0.5-1:3.0 is added.
3. according to claim 1 can be quickly by the method for heavy metal wastewater thereby recycling, it is characterised in that: the S3 step
Aluminium polychloride, bodied ferric sulfate, polyaluminum ferric chloride, any one in ferric trichloride or two kinds or more can be used in middle coagulant
Combination, compound concentration 5-10%, metering pump add, dosage 100-500mg/L；Stirring is equipped in chemical coagulation pond
Device, revolving speed 67rp, stir grade 7-8, hydraulic detention time 2-10 minutes.
4. according to claim 1 can be quickly by the method for heavy metal wastewater thereby recycling, it is characterised in that: the S4 step
In magnetic kind Fe3O4Content is greater than 60%, and grain is returned through 80-200 mesh, dosage 8-100g/L by magnetic kind supply device and magnetic kind
Receipts machine adds；It is mixed using blender in the magnetic kind coagulating basin (4), revolving speed 43rp, stirs grade 10, when hydraulic retention
Between 2-5 point kinds.
5. according to claim 1 can be quickly by the method for heavy metal wastewater thereby recycling, it is characterised in that: the S5 step
In flocculant use anionic polyacrylamide, molecular weight 800-1200 ten thousand, compound concentration be 1-5 ‰, metering pump adds,
Dosage is 10-50mg/L；Flocculation tank (5) is mixed using blender, revolving speed 27rp, stirs grade 10, waterpower is stopped
Stay time 2-8 points kinds.
6. according to claim 1 can be quickly by the method for heavy metal wastewater thereby recycling, it is characterised in that: the S6 step
Inclined-tube sedimentation tank or vertical sedimentation tank can be used in middle sedimentation basin (6)；Plate and frame filter press or folded spiral shell machine can be used in dewaterer.
7. can be quickly by the device of heavy metal wastewater thereby recycling, it is characterised in that: including mixed by the sequentially connected pipeline of pipeline
Clutch (1), mixed reaction pond (2), chemical coagulation pond (3), magnetic kind coagulating basin (4), flocculation tank (5), sedimentation basin (6) and magnetic
Kind recycling machine (7) and mud field (8)；The pipe-line mixer (1) is connected by grille well (16) with extraneous waste water by pipeline
It connects；And magnetic kind recycling machine (7) is provided between sedimentation basin (6) and mud field (8).
8. according to claim 7 can be quickly by heavy metal wastewater thereby recycling unit, it is characterised in that: the pipeline mixing
Device (1) is connected with PH regulator tank (10) by pipeline；The mixed reaction pond (2) is connected with Na by pipeline2S adds tank
(11)；The chemical coagulation pond (3) is connected with coagulant dissolution tank (12) by pipeline;It is set above the magnetic kind coagulating basin (4)
It is equipped with magnetic kind supply device (13)；The flocculation tank (5) is connected by pipeline with flocculant dissolving tank (14).
9. according to claim 7 or 8 can be quickly by heavy metal wastewater thereby recycling unit, it is characterised in that: the mixing
Reaction tank (2), chemical coagulation pond (3), magnetic kind coagulating basin (4) and flocculation tank (5) are provided with blender inside it；It is described
Sedimentation basin (6) top is provided with water outlet (15)；The magnetic kind recycling machine (7) is connected by pipeline with sludge dewatering equipment (9),
And sludge dewatering equipment (9) is connected by conveyer belt with aggregate market.
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Cited By (3)
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| CN110204102A (en) * | 2019-07-10 | 2019-09-06 | 安徽瑞迪工程科技有限公司 | One kind resource recovering system of acid waste water containing ferrous ion and method |
| CN113651485A (en) * | 2021-08-18 | 2021-11-16 | 云南云铜锌业股份有限公司 | Method for removing heavy metals in water body |
| CN114988542A (en) * | 2022-06-15 | 2022-09-02 | 江苏中电创新环境科技有限公司 | Preparation method of magnetic flocculant for high-speed sedimentation of chemical mixed sludge |
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| CN107698092A (en) * | 2017-11-25 | 2018-02-16 | 昆明有色冶金设计研究院股份公司 | A kind of packaged type fluorine-containing wastewater treatment method and device |
| CN209815890U (en) * | 2019-05-05 | 2019-12-20 | 云南恒碧环保科技有限公司 | Device capable of rapidly recycling heavy metal wastewater |
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| CN104556501A (en) * | 2013-10-11 | 2015-04-29 | 南京源泉环保科技股份有限公司 | Method for removing COD of membrane concentrated liquid |
| CN107698092A (en) * | 2017-11-25 | 2018-02-16 | 昆明有色冶金设计研究院股份公司 | A kind of packaged type fluorine-containing wastewater treatment method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110204102A (en) * | 2019-07-10 | 2019-09-06 | 安徽瑞迪工程科技有限公司 | One kind resource recovering system of acid waste water containing ferrous ion and method |
| CN113651485A (en) * | 2021-08-18 | 2021-11-16 | 云南云铜锌业股份有限公司 | Method for removing heavy metals in water body |
| CN114988542A (en) * | 2022-06-15 | 2022-09-02 | 江苏中电创新环境科技有限公司 | Preparation method of magnetic flocculant for high-speed sedimentation of chemical mixed sludge |
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