CN106966469A - A kind of processing method of containing sulfate radicals waste water - Google Patents
A kind of processing method of containing sulfate radicals waste water Download PDFInfo
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- CN106966469A CN106966469A CN201710228329.7A CN201710228329A CN106966469A CN 106966469 A CN106966469 A CN 106966469A CN 201710228329 A CN201710228329 A CN 201710228329A CN 106966469 A CN106966469 A CN 106966469A
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- waste water
- containing sulfate
- sulfate radicals
- processing method
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A kind of processing method of containing sulfate radicals waste water, is related to technical field of sewage, and in particular to a kind of processing method of containing sulfate radicals waste water.It is characterized in that its processing procedure is using lead flake as anode, using inactive, conductive material as negative electrode, electrolysis processing, the Pb of anode lead flake reaction production are carried out to containing sulfate radicals waste water2+With sulfate radical formation PbSO4Precipitation, filters to isolate sediment, adjusts and is discharged after the pH of filtrate.The method of the present invention, technological process is simple, is easily controlled and is easy to set up sealing and circulating, environment-friendly, does not produce secondary pollution, waste residue can be reused, and realizes the optimum use of resource, reduces cost for wastewater treatment, realizes the optimum use of resource.
Description
Technical field
A kind of processing method of containing sulfate radicals waste water, is related to the processing side of sewage disposal particularly containing sulfate radicals industrial wastewater
Method.
Background technology
Sulfuric acid as a kind of most common inorganic acid, be not only widely used in chemical fertilizer industry, metallurgical industry, petroleum industry,
The industrial departments such as mechanical industry, medical industry, the production of detergent, war industry, atomic energy industry and aerospace industry, are additionally operable to
Produce dyestuff, agricultural chemicals, chemical fibre, plastics, coating, and various substantially organic and inorganic chemical products.These relevant enterprises
The waste water of discharge often contains substantial amounts of sulfate radical, because most of sulfuric acid salt solubilities are very big, and property is stable in nature,
So being very difficult to remove by self-purification.Sulfate-containing wastewater, which is discharged into water body, can make storage water acidification, and pH value reduction endangers water
It is biological；It is discharged into farmland and can destroys soil texture, make soil hardening, reduces crop yield and reduction quality of agricultural product；Sulfuric acid
Root can also convert the poisonous foul smell hydrogen sulfide of the generation even stronger thio sulfide of toxicity and connection four under reducing bacteria anaerobic condition
Sulfate etc., is directly detrimental to health and water ecology balance, causes intractable environmental problem.Once sulfate contamination is big face
Product is formed, and improvement will be extremely difficult, therefore the processing method of research containing sulfate radicals waste water is extremely urgent.
Due to sulfate radical, solubility is big in water body and Nature comparison is stable, and the method for sulfate radical wastewater treatment is relative
Other ion ratios are relatively limited, mainly have chemical precipitation method, anaerobic digestion method and ion-exchange etc., but all there are some deficiencies
Place.
Chemical precipitation method is mainly heavy using chemical substance such as calcium oxide, calcium chloride, barium chloride etc. and sulfate radical reaction generation
Form sediment.A kind of method that sulfate radical is removed from liquid is provided in patent CN105008288A, by adding neutral in waste liquid
Aluminon and alkaline calcon produce the precipitation of containing sulfate radicals into waste liquid, reach the effect of sulfate radical.Patent
Mixed, press filtration removes waste residue, removed simultaneously so as to reach with the waste water of containing sulfate radicals using calcium hydroxide in CN103819027A
The purpose of sulfate radical and acidic materials.But this chemical precipitation method also has certain defect, if with cheap calcium oxide,
Calcium chloride, the then product calcium sulfate dissolving product generated is larger, sulfate radical remove it is unnet, and if with the preferable barium chloride of effect,
Then price is higher and has severe toxicity to human body for the reagents such as barium nitrate.
Anaerobic digestion rule need to design hydrolysis acidification before anaerobic technique, and sulfate radical first is converted into hydrogen sulfide, Ran Houtong
Cross and be aerated or add molysite removal hydrogen sulfide.Such a method is provided in patent CN1393412, allows waste water to pass through in anoxic
Multiple circulation between unit and aerobic unit is made a return journey sulfate radical.The method provided in patent CN102190411A then mainly includes
Ca(OH)2The steps such as pretreatment, Anaerobic Treatment, two sections of Aerobic Process for Treatment, form the waste water fermentation processing using anaerobic bacteria as advantage
Method and the aerobic aeration processing method based on thermophilic salt and the processing of salt tolerant aerobic microbiological.The shortcoming of this method is technique ratio
More complicated, process CIMS is more.
Some enterprises utilize biochemistry+MBR+RO film process sulfate radicals.Using NF membrane to chlorine in patent CN105585033A
Change sylvite water to be concentrated, calcium chloride formation crystal of calcium sulfate is then added into concentration salt solution, then through settling and filtering, that is, take off
Except the sulfate ion in potassium chloride salt water.Patent CN105417820A is concentrated by NF membrane, counter-infiltration and electrodialysis reach
Go the purpose of removing chloride and sulfate ion.This method effect is preferable but resin used needs to enter from Germany or Japan
Mouthful, price is higher.
As can be seen here, that has announced goes the method for sulfate radical nothing more than chemical precipitation method, ion-exchange and pressure oxygen
Facture, does not announce the method that sulfate radical is removed by Direct Electrolysis also temporarily.
The content of the invention
Not enough simple, the processing cost there is provided a kind of technique that the purpose of the present invention exists aiming at above-mentioned prior art
Low, flow is controllable, and sulfate radical removal efficiency is high and does not produce the processing method of the containing sulfate radicals waste water of secondary pollution.
The purpose of the present invention is achieved through the following technical solutions.
A kind of processing method of containing sulfate radicals waste water, it is characterised in that its processing procedure is using lead flake as anode, with inertia
Conductive material is negative electrode, and electrolysis processing, the Pb of anode lead flake reaction production are carried out to containing sulfate radicals waste water2+Formed with sulfate radical
PbSO4Precipitation, filters to isolate sediment, adjusts and is discharged after the pH of filtrate.
A kind of processing method of containing sulfate radicals waste water of the present invention, it is characterised in that the pH value of described containing sulfate radicals waste water
For 2~8.
A kind of processing method of containing sulfate radicals waste water of the present invention, it is characterised in that the inertia conduction material for negative electrode
Expect for graphite, glass carbon, titanium, Pb or stainless steel.
A kind of processing method of containing sulfate radicals waste water of the present invention, it is characterised in that the pH value of described adjustment filtrate to 6
Directly discharged after~9.
The processing method of a kind of containing sulfate radicals waste water of the present invention, it is characterised in that described containing sulfate radicals waste water is by pre-
Processing, adjustment pH value is 4~5.5.
The processing method of a kind of containing sulfate radicals waste water of the present invention, it is characterised in that described containing sulfate radicals waste water carries out pre-
During processing, adjustment pH conditioning agent is sulfuric acid.
The processing method of a kind of containing sulfate radicals waste water of the present invention, it is characterised in that described cathode material is graphite, glass
The inactive, conductive materials such as carbon, titanium, Pb or stainless steel；Anode material is the stereotype of smooth and clean；Electrode is all sheet and area phase
Deng.
A kind of processing method of containing sulfate radicals waste water of the present invention, it is characterised in that the electrolytic potential of its electrolytic process
For 0.1V~8V.
A kind of processing method of containing sulfate radicals waste water of the present invention, it is characterised in that the preferred electrolysis of its electrolytic process
Current potential is between 0.5V~7V.
A kind of processing method of containing sulfate radicals waste water of the present invention, it is characterised in that the cell reaction of its electrolytic process
Time is 1~600min.
The processing method of a kind of containing sulfate radicals waste water of the present invention, it is characterised in that filtering to isolate sediment electrolysis turns into
Lead and brown lead oxide recycling are used again as lead accumulator raw material.
A kind of processing method for containing sulfate radicals waste water that the present invention is provided, is handled waste water using Indirect Electro solution,
Chemically reacted using electrolytic oxidation and reduzate with the harmful substance in waste water, generate water insoluble sediment,
Purification of waste water is realized to be separated off harmful substance.Whole reaction is main to include two processes：
First, electrolysis produces Pb2+Process：In acid waste water, using heavy metal wastewater thereby as electrolyte, with smooth and clean
Stereotype is anode, using inactive, conductive materials such as graphite, glass carbon, titanium, Pb, stainless steels as negative electrode.According to conductivity of waste water and negative and positive
Pole pole span regulation electrolytic potential, the reaction time is determined according to sulfate concentration and electrode area.Lead anode loses electronics and produces Pb2 +, the following reaction of anode generation：
Pb-2e → Pb2+
Negative electrode obtains electronics and produces OH-, occur following reaction：
2H2O+2e→2OH-+H2↑
Nascent state [H] can also play electronation to Pollutants in Wastewater, and can produce tiny bubble, make flocculate
Or oil is attached to bubble floating and rises to liquid level in favor of next step water process.
2nd, Pb2+With the SO in waste water4 2-With reference to the process of generation precipitation：It is electrolysed the Pb produced2+With it is substantial amounts of in waste water
SO4 2-With reference to generation precipitation, react as follows：
Pb2+-+SO4 2-→PbSO4↓
This product can be separated by filtering with supernatant, and electrode continuation can be both made in the PbSO4 isolated
Electrolytically generated metallic lead and brown lead oxide recycling, can also play a role as the raw material of lead accumulator, realize resource
Optimal utilization.
A kind of processing method of containing sulfate radicals waste water of the present invention, compared with prior art, technological process are simple, easily control
Make and be easy to set up sealing and circulating, it is environment-friendly, secondary pollution is not produced, waste residue can be reused, and realize the optimal of resource
Change is used.
Embodiment
A kind of processing method of containing sulfate radicals waste water, its processing procedure be by containing sulfate radicals waste water regulation pH value be 2~8
Afterwards, it is negative electrode to it using inactive, conductive materials such as graphite, glass carbon, titanium, Pb or stainless steels using lead flake as anode into electrolytic cell
Cell reaction is carried out, electrolytic potential can be adjusted according to conductivity of waste water and anode and cathode pole span, and the reaction time is dense by sulfate radical
Depending on degree and electrode area；Then press filtration is carried out to precipitation, the pH value for adjusting filtrate is discharged to after 6~9.
A kind of processing method of containing sulfate radicals waste water of the present invention, with sulfuric acid, hydrochloric acid, the inorganic acid such as nitric acid is to by sulfur acid
Root waste water is pre-processed, and pH value is adjusted to 2~8；Its preferred pH scope is 4~5.5；Its preferred pH adjusting agent is sulfuric acid.
A kind of processing method of containing sulfate radicals waste water of the present invention, described electric tank cathode material is graphite, glass carbon,
The inactive, conductive materials such as titanium, Pb or stainless steel；Anode material is the stereotype of smooth and clean；Electrode is all sheet and area equation.
A kind of processing method of containing sulfate radicals waste water of the present invention, its electrolytic potential, can be according to Wastewater by Electric in 0.1V~8V
Conductance and anode and cathode pole span are adjusted；Its preferred electrolytic potential, can be according to conductivity of waste water and anode and cathode pole in 0.5V~7V
Away from being adjusted；Its reaction time is 1~600min, can be depending on sulfate concentration and electrode area.
Technical scheme is described in detail below by specific embodiment.
Embodiment 1
Containing sulfate radicals waste water is certain dyeing mill wastewater, and water quality is shown in Table 1：
Effluent quality after the dyeing mill wastewater of table 1 and processing
Waste water is adjusted into pH to 4, with 10cm2Square stereotype be anode, using the stainless steel of formed objects as negative electrode, in the moon
Anode is just pair and pole span is kept under conditions of 20cm using voltage 5V, current density as 0.25A/cm2Lower electrolysis 300min, adjusts pH
To 6.7, effluent quality reaches discharge standard, is shown in Table 1.The SO of waste water4 2-Clearance is 98.44%.
Embodiment 2
Sulfate radical waste water is certain power plant effluent, and water quality is shown in Table 2：
Effluent quality after the power plant effluent of table 2 and processing
Waste water is adjusted into pH to 4.5, with 20cm2Square stereotype be anode, using the graphite cake of formed objects as negative electrode,
Anode and cathode is just pair and pole span is kept under conditions of 10cm using voltage 3V, current density as 0.4A/cm2Lower electrolysis 60min, adjusts pH
To 7, effluent quality reaches discharge standard, is shown in Table 2.The SO of waste water4 2-Clearance is 90.24%.
Embodiment 3
Containing sulfate radicals waste water is certain waste water from plating plant, and water quality is shown in Table 3：
Effluent quality after the electroplating wastewater of table 3 and processing
Waste water is adjusted into pH to 5.5, with 25cm2Square stereotype be anode, using the metallic titanium plate of formed objects as negative electrode,
In anode and cathode just pair and pole span is kept under conditions of 20cm using voltage 5V, current density as 0.6A/cm2Lower electrolysis 30min, regulation
PH to 7.3, effluent quality reaches discharge standard, is shown in Table 3.The SO of waste water4 2-Clearance is 90.76%.
Embodiment 4
Sulfate radical wastewater treatment：
Effluent quality after the electroplating wastewater of table 4 and processing
Waste water from plating plant in embodiment 3 is adjusted into pH to 4, with 30cm2Square stereotype be anode, with formed objects
Metallic titanium plate is negative electrode, in anode and cathode just pair and pole span is kept under conditions of 8cm using voltage 3V, current density as 0.79A/cm2
Lower electrolysis 20min, adjusts pH to 6.5, effluent quality reaches discharge standard, is shown in Table 4.The SO of waste water4 2-Clearance is 91.58%.
Claims (11)
1. a kind of processing method of containing sulfate radicals waste water, it is characterised in that its processing procedure is, using lead flake as anode, to be led with inertia
Electric material is negative electrode, and electrolysis processing, the Pb of anode lead flake reaction production are carried out to containing sulfate radicals waste water2+Formed with sulfate radical
PbSO4Precipitation, filters to isolate sediment, adjusts and is discharged after the pH of filtrate.
2. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that described containing sulfate radicals
The pH value of waste water is 2~8.
3. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that described for negative electrode
Inactive, conductive material is graphite, glass carbon, titanium, Pb or stainless steel.
4. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that described adjustment filtrate
PH value to directly discharging after 6~9.
5. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that described containing sulfate radicals
Waste water is 4~5.5 by pretreatment, adjustment pH value.
6. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that described containing sulfate radicals
When waste water is pre-processed, adjustment pH conditioning agent is sulfuric acid.
7. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that described cathode material
For inactive, conductive materials such as graphite, glass carbon, titanium, Pb or stainless steels；Anode material is the stereotype of smooth and clean；Electrode is all sheet
And area equation.
8. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that its electrolytic process
Electrolytic potential be 0.1V~8V.
9. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that its electrolytic process
Electrolytic potential be 0.5V~7V.
10. a kind of processing method of containing sulfate radicals waste water according to claim 1, it is characterised in that its electrolytic process
The cell reaction time be 1~600min.
11. the processing method of a kind of containing sulfate radicals waste water according to claim 1, it is characterised in that filter to isolate precipitation
Thing electrolysis is again used as lead and brown lead oxide recycling or as lead accumulator raw material.
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| CN201710228329.7A CN106966469A (en) | 2017-04-10 | 2017-04-10 | A kind of processing method of containing sulfate radicals waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191003A (en) * | 2017-12-29 | 2018-06-22 | 欧群飞 | A kind of electrolytic processing method of containing sulfate radicals waste water |
| CN112939296A (en) * | 2021-03-26 | 2021-06-11 | 国能朗新明环保科技有限公司 | Method for removing sulfate radical in wastewater by electrochemical method |
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|---|---|---|---|---|
| DE3203481A1 (en) * | 1982-02-03 | 1983-08-11 | Varta Batterie Ag, 3000 Hannover | Process for recovering sulphuric acid from waste waters |
| JPS62197115A (en) * | 1986-02-25 | 1987-08-31 | Fuji Electric Co Ltd | Electrode of electroosmotic type dehydrator |
| CN102807277A (en) * | 2012-08-07 | 2012-12-05 | 华南理工大学 | Method for removing lead from alkaline etching waste liquid of printed circuit boards |
| CN103833167A (en) * | 2014-03-13 | 2014-06-04 | 黄运富 | Chromic acid wastewater treatment method and system |
| CN103936191A (en) * | 2014-04-02 | 2014-07-23 | 超威电源有限公司 | Zero discharge treatment method for wastewater of lead-acid battery |
| CN104532292A (en) * | 2014-12-20 | 2015-04-22 | 六盘水中联工贸实业有限公司 | Method for removing sulfate radical from lead sulfate alkaline electrolyte |
-
2017
- 2017-04-10 CN CN201710228329.7A patent/CN106966469A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3203481A1 (en) * | 1982-02-03 | 1983-08-11 | Varta Batterie Ag, 3000 Hannover | Process for recovering sulphuric acid from waste waters |
| JPS62197115A (en) * | 1986-02-25 | 1987-08-31 | Fuji Electric Co Ltd | Electrode of electroosmotic type dehydrator |
| CN102807277A (en) * | 2012-08-07 | 2012-12-05 | 华南理工大学 | Method for removing lead from alkaline etching waste liquid of printed circuit boards |
| CN103833167A (en) * | 2014-03-13 | 2014-06-04 | 黄运富 | Chromic acid wastewater treatment method and system |
| CN103936191A (en) * | 2014-04-02 | 2014-07-23 | 超威电源有限公司 | Zero discharge treatment method for wastewater of lead-acid battery |
| CN104532292A (en) * | 2014-12-20 | 2015-04-22 | 六盘水中联工贸实业有限公司 | Method for removing sulfate radical from lead sulfate alkaline electrolyte |
Non-Patent Citations (1)
| Title |
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| 张招贤等: "<<钛电极反应工程学>>", 30 April 2009 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191003A (en) * | 2017-12-29 | 2018-06-22 | 欧群飞 | A kind of electrolytic processing method of containing sulfate radicals waste water |
| CN112939296A (en) * | 2021-03-26 | 2021-06-11 | 国能朗新明环保科技有限公司 | Method for removing sulfate radical in wastewater by electrochemical method |
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Application publication date: 20170721 |
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