CN109205740A - A kind of processing method of organic wastewater - Google Patents
A kind of processing method of organic wastewater Download PDFInfo
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- CN109205740A CN109205740A CN201811398773.4A CN201811398773A CN109205740A CN 109205740 A CN109205740 A CN 109205740A CN 201811398773 A CN201811398773 A CN 201811398773A CN 109205740 A CN109205740 A CN 109205740A
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- organic wastewater
- lead
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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
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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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
- C02F2101/30—Organic compounds
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- 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
The present invention provides a kind of processing methods of organic wastewater, belong to technical field of sewage.The present invention is using stainless steel as cathode, with one of iridium tantalum, graphite plate or brown lead oxide for anode, as electrolyte and is electrolysed using organic wastewater；Copper content is 1000~15000mg/L in the organic wastewater, and lead content is 100~1000mg/L, and COD content is 8000~15000mg/L；The volume of the electrolyte is 100~400mL.Cathode by organic wastewater copper and lead be reduced to copper simple substance and lead simple substance, copper simple substance and lead simple substance is precipitated on cathode；The oxygen evolution reaction of anode can remove the oxidation operation in organic wastewater.From embodiment as can be seen that using processing method of the invention, the removal rate to copper in organic wastewater is 91.0~98.7%, and lead removal rate is that 80.0~87.1%, COD removal rate is 74.0~85.4%.
Description
Technical field
The present invention relates to technical field of sewage more particularly to a kind of processing methods of organic wastewater.
Background technique
Waste water environmental pollution most serious containing metal, also harm to the human body is maximum.It is well known that if absorption of human body
Excessive metal may result in and be poisoned and cause serious consequence.In some cases, metal can inhibit the work of internal enzyme
Property, and the damaged nerve tissue in the form of cytotoxicity, and the organ that human body has function of detoxification is damaged, such as liver and kidney
Dirty tissue.
The study found that the metal ions such as chromium, copper, lead, nickel are to the very harmful of human body.Copper is must in human life activity
Must one of microelement, but excessive copper be all to the mankind, animal and plant it is harmful, copper also has weight to the self-cleaning of water body
The influence wanted.Therefore, very urgent to the improvement of the waste water containing metal ion.
It is varied to the administering method of the waste water of metal ion, summarize the Practical Project in relation to wastewater treatment both at home and abroad
Case, and consult a large amount of biliographic datas, main processing method have neutralization precipitation method, sulphide precipitation, absorption method,
Electrolysis method, bioanalysis, ion-exchange etc..But in existing administering method, it is difficult efficiently to remove metal and simple process
It combines.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of processing methods of organic wastewater.Processing method of the invention
Copper, lead and COD in organic wastewater can efficiently be removed, and technological operation is easy, low in cost.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of processing methods of organic wastewater, using stainless steel as cathode, with iridium tantalum, graphite plate or dioxy
Changing one of lead is anode, is electrolysed by electrolyte of organic wastewater；
Copper content is 1000~15000mg/L in the organic wastewater, and lead content is 100~1000mg/L, and COD content is
8000~15000mg/L；
The volume of the electrolyte is 100~400mL.
Preferably, the pH value of the electrolyte is 1.5~3.5.
Preferably, the spacing of the cathode and anode is 2.0~5.5cm.
Preferably, the voltage of the electrolysis is 4~12V.
Preferably, the time of the electrolysis is 1~4h.
The present invention provides a kind of processing methods of organic wastewater, using stainless steel as cathode, with iridium tantalum, graphite plate or dioxy
Changing one of lead is anode, is electrolysed by electrolyte of organic wastewater；In the organic wastewater copper content be 1000~
15000mg/L, lead content are 100~1000mg/L, and COD content is 8000~15000mg/L；The volume of the electrolyte is
100~400mL.In the present invention, copper and lead on cathode in organic wastewater are reduced to copper simple substance and lead simple substance, make copper simple substance
It is precipitated on cathode with lead simple substance；Anode can remove the oxidation operation in organic wastewater with oxygen evolution reaction.Using stone
Black plate is anode, other than chemical conductive participates in catalytic reduction reaction, also has the function of physical absorption degradation organic acid.Using
Brown lead oxide and iridium tantalum electrode are anode, in addition to playing the role of catalysis oxidation, also have electrode indissoluble solution can be with iterative cycles
The effect used.In particular by iridium tantalum electrode for after anode, during oxidation operation, iridium, tantalum can be risen in iridium tantalum electrode
To the effect of apparent catalysis oxidation, can significantly accelerated oxidation reaction progress.From embodiment as can be seen that using of the invention
Processing method, the removal rate to copper ion in organic wastewater are 91.0~98.7%, and lead ion removal rate is 80.0~87.1%,
COD removal rate is 74.0~85.4%.
Specific embodiment
The present invention provides a kind of processing methods of organic wastewater, using stainless steel as cathode, with iridium tantalum, graphite plate or dioxy
Changing one of lead is anode, is electrolysed by electrolyte of organic wastewater；
Copper content is 1000~15000mg/L in the organic wastewater, and lead content is 100~1000mg/L, and COD content is
8000~15000mg/L；
The volume of the electrolyte is 100~400mL.
Method for processing organic wastewater provided by the invention, using stainless steel as cathode.Concrete type of the present invention to stainless steel
There is no special restriction, using stainless steel type well known to those skilled in the art, it is specific such as 304 type stainless steels or
316 type stainless steels.In the present invention, the stainless steel is preferably stainless steel substrates, and the present invention does not have the size of the stainless steel substrates
There is special restriction, the wastewater volume handled according to actual needs is selected.In an embodiment of the present invention, it is described not
Rust steel piece is preferably dimensioned to be 7cm × 3cm × 1mm.In the present invention, the stainless steel before carrying out before use, it is preferred that locate
Reason.In the present invention, the pre-treatment preferably includes following steps: straight using the sand paper polishing stainless steel surface greasy dirt of 800 mesh
To light, then light is polishing to 1200,2000 mesh sand paper respectively；It is clear that stainless steel after polishing is put into ultrasound in deionized water
5min is washed, places into and cleans 5min in dehydrated alcohol, the stainless steel drying after having cleaned, for use.
Method for processing organic wastewater provided by the invention, with one of iridium tantalum, graphite plate or brown lead oxide for anode.This
Invention does not have special restriction to the source of iridium tantalum electrode, using commercial product well known to those skilled in the art.At this
In invention, the iridium tantalum electrode is preferably cuboid；The present invention does not have special restriction, root to the size of cuboid iridium tantalum electrode
It is selected according to actual needs.In an embodiment of the present invention, the cuboid iridium tantalum electrode be preferably dimensioned to be 7cm ×
3cm×2mm.In the present invention, the iridium tantalum electrode is preferably pre-processed using preceding, and the pretreatment preferably includes following
Step: impregnating 5~15min for iridium tantalum electrode in 1.0~2.0mol/L sulfuric acid solution, places into deionized water cleaning, dries,
It is spare.
The present invention does not have special restriction to the source of graphite plate, is using commercial product well known to those skilled in the art
It can.In the present invention, the graphite plate is preferably cuboid；The present invention does not have special restriction to the size of graphite plate, according to
Actual needs is selected.In an embodiment of the present invention, the parallelepiped graphite slab electrode be preferably dimensioned to be 7cm ×
3cm×2mm.In the present invention, the graphite plate electrode is preferably pre-processed using preceding, it is described pretreatment preferably include with
Lower step: graphite plate being put into deionized water and cleans and dries, spare.
The present invention does not have special restriction to the source of brown lead oxide, using commercial product well known to those skilled in the art
?.In the present invention, the brown lead oxide is preferably cuboid；The present invention is not special to the size of cuboid brown lead oxide
Restriction, selected according to actual needs.In an embodiment of the present invention, the size of the cuboid brown lead oxide is excellent
It is selected as 7cm × 3cm × 2mm.In the present invention, the brown lead oxide is preferably pre-processed using preceding, and the pretreatment is excellent
Choosing the following steps are included: brown lead oxide concentration be the weak sulfuric acid solution of 1.0~2.0mol/L in impregnate 5~15min；Then it spends
Ionized water cleaning and drying, it is spare.
In the present invention, the spacing of the cathode and anode is preferably 2.0~5.5cm, further preferably 2.5~
5.0cm, more preferably 3.0~4.0cm.Method for processing organic wastewater provided by the invention is carried out by electrolyte of organic wastewater
Electrolysis.In the present invention, the volume of the electrolyte is 100~400mL, preferably 150~350mL, further preferably 200
~300mL, more preferably 250mL.
In the present invention, copper content is 1000~15000mg/L in the organic wastewater；Lead content in the organic wastewater
For 100~1000mg/L；COD content is 8000~15000mg/L in the organic wastewater.In the present invention, the organic wastewater
Preferably organic wastewater is filtered before electrolysis, removes the particulate matter in organic wastewater.In the present invention, it is used when the filtering
The aperture of strainer be preferably 80~120 μm, further preferably 90~110 μm, more preferably 100 μm.The present invention is to organic
The source of waste water does not have special restriction, using well known to a person skilled in the art the organic wastewaters generated in industry.
In the present invention, the pH value of the electrolyte is preferably 1.5~3.5, and further preferably 2.0~3.0, more preferably
It is 2.5.In the present invention, the pH value of the electrolyte is preferably adjusted with 98% concentrated sulfuric acid or sodium hydroxide.In this hair
In bright, the voltage of the electrolysis is preferably 4~12V, further preferably 5~10V, more preferably 6~8V.In the present invention,
The time of the electrolysis is preferably 1~4h, further preferably 1.5~3.5h, more preferably 2.0~3.0h.In the present invention,
The temperature of the electrolysis is preferably room temperature.
In the present invention, cathode by organic wastewater copper and lead be reduced to copper simple substance and lead simple substance respectively, make copper simple substance
It is precipitated on cathode with lead simple substance；The oxygen evolution reaction of anode can remove the oxidation operation in organic wastewater；To reach
The purpose of copper ion, lead ion and organic matter is efficiently removed simultaneously.
It is described in detail below with reference to processing method of the embodiment to organic wastewater provided by the invention, but cannot
They are interpreted as limiting the scope of the present invention.
Embodiment 1
A kind of processing method of organic wastewater, using having a size of 7cm × 3cm × 2mm parallelepiped graphite slab as anode, with ruler
Very little be 7cm × 3cm × 2mm stainless steel substrates is cathode, and the spacing of cathode and anode is 5.0cm, is 2.0 with 250mL pH value
Organic wastewater is electrolyte, at normal temperature, electrolysis 3.5h is carried out under the voltage of 10.0V；Copper content is in the organic wastewater
1000mg/L, lead content 100mg/L, COD content are 8000mg/L.
It is electrolysed the concentration of copper ion, lead ion and COD in the organic wastewater of front and back by measurement, copper ion, lead can be obtained
The removal rate of ion and COD, the results are shown in Table 1.
Embodiment 2
A kind of processing method of organic wastewater, using having a size of 7cm × 3cm × 2mm parallelepiped graphite slab as anode, with ruler
Very little be 7cm × 3cm × 2mm stainless steel substrates is cathode, and the spacing of cathode and anode is 3.0cm, is 2.5 with 250mL pH value
Organic wastewater is electrolyte, at normal temperature, electrolysis 3.0h is carried out under the voltage of 6.0V；Copper content is in the organic wastewater
5730mg/L, lead content 430mg/L, COD content are 10430mg/L.
It is electrolysed the concentration of copper ion, lead ion and COD in the organic wastewater of front and back by measurement, copper ion, lead can be obtained
The removal rate of ion and COD, the results are shown in Table 1.
Embodiment 3
A kind of processing method of organic wastewater, using having a size of 7cm × 3cm × 2mm cuboid iridium tantalum electrode as anode, with
It is cathode having a size of 7cm × 3cm × 2mm stainless steel, it is 1.5 with 250mL pH value that the spacing of cathode and anode, which is 2.0cm,
Organic wastewater is electrolyte, at normal temperature, electrolysis 4.0h is carried out under the voltage of 4.0V；Copper content is in the organic wastewater
10470mg/L, lead content 930mg/L, COD content are 14230mg/L.
It is electrolysed the concentration of copper ion, lead ion and COD in the organic wastewater of front and back by measurement, copper ion, lead can be obtained
The removal rate of ion and COD, the results are shown in Table 1.
Embodiment 4
A kind of processing method of organic wastewater, using having a size of 7cm × 3cm × 2mm cuboid iridium tantalum electrode as anode, with
It is cathode having a size of 7cm × 3cm × 2mm stainless steel, it is 3.0 with 250mL pH value that the spacing of cathode and anode, which is 2.5cm,
Organic wastewater is electrolyte, at normal temperature, electrolysis 1.5h is carried out under the voltage of 5.0V；Copper content is in the organic wastewater
13970mg/L, lead content 680mg/L, COD content are 15000mg/L.
It is electrolysed the concentration of copper ion, lead ion and COD in the organic wastewater of front and back by measurement, copper ion, lead can be obtained
The removal rate of ion and COD, the results are shown in Table 1.
Embodiment 5
A kind of processing method of organic wastewater, to be sun having a size of 7cm × 3cm × 2mm cuboid lead dioxide electrode
Pole is with 250mL pH value using having a size of 7cm × 3cm × 2mm stainless steel, as cathode, the spacing of cathode and anode is 4.0cm
2.5 organic wastewater is that electrolyte carries out electrolysis 2.0h at normal temperature under the voltage of 8.0V；Copper contains in the organic wastewater
Amount is 9760mg/L, and lead content 760mg/L, COD content is 13450mg/L.
It is electrolysed the concentration of copper ion, lead ion and COD in the organic wastewater of front and back by measurement, copper ion, lead can be obtained
The removal rate of ion and COD, the results are shown in Table 1.
Embodiment 6
A kind of processing method of organic wastewater, to be sun having a size of 7cm × 3cm × 2mm cuboid lead dioxide electrode
Pole is with 250mL pH value using having a size of 7cm × 3cm × 2mm stainless steel, as cathode, the spacing of cathode and anode is 5.5cm
3.5 organic wastewater is that electrolyte carries out electrolysis 1.0h at normal temperature under the voltage of 12V；Copper content in the organic wastewater
For 15000mg/L, lead content 1000mg/L, COD content is 11890mg/L.
It is electrolysed the concentration of copper ion, lead ion and COD in the organic wastewater of front and back by measurement, copper ion, lead can be obtained
The removal rate of ion and COD, the results are shown in Table 1.
The removal rate result of copper ion, lead ion and COD in 1 Examples 1 to 6 of table
As it can be seen from table 1 it is of the invention with one of iridium tantalum, graphite plate and brown lead oxide for anode, with stainless steel
For cathode；Copper ion, lead ion and the COD in organic wastewater can efficiently be removed；To copper ion, lead ion in organic wastewater
Removal rate with COD is respectively 91.0~98.7%, 80.0~87.1% and 74.0~85.4%.
In the present invention, the evolving hydrogen reaction of cathode by waste water copper ion and lead ion be reduced to copper simple substance and lead list
Copper simple substance and lead simple substance is precipitated on cathode in matter；The oxygen evolution reaction of anode can remove the oxidation operation in organic wastewater
It removes；To achieve the purpose that while efficiently remove copper ion, lead ion and organic matter in organic wastewater.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of processing method of organic wastewater is with one of iridium tantalum, graphite plate or brown lead oxide using stainless steel as cathode
Anode is electrolysed by electrolyte of organic wastewater；
Copper content is 1000~15000mg/L in the organic wastewater, and lead content is 100~1000mg/L, and COD content is 8000
~15000mg/L；The volume of the electrolyte is 100~400mL.
2. processing method according to claim 1, which is characterized in that the pH value of the organic wastewater is 1.5~3.5.
3. processing method according to claim 1 or 2, which is characterized in that the spacing of the cathode and anode be 2.0~
5.5cm。
4. processing method according to claim 1 or 2, which is characterized in that the voltage of the electrolysis is 4~12V.
5. processing method according to claim 1 or 2, which is characterized in that the time of the electrolysis is 1~4h.
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| CN201811398773.4A CN109205740A (en) | 2018-11-22 | 2018-11-22 | A kind of processing method of organic wastewater |
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| CN201811398773.4A CN109205740A (en) | 2018-11-22 | 2018-11-22 | A kind of processing method of organic wastewater |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3766035A (en) * | 1971-09-09 | 1973-10-16 | Mitsui Mining & Smelting Co | Method of separating metals from waste water |
| CN102603038A (en) * | 2012-04-11 | 2012-07-25 | 苏州科技学院 | Electrochemical reactor and method for processing organic pollutant in water |
| CN205687616U (en) * | 2016-06-20 | 2016-11-16 | 甘肃金创绿丰环境技术有限公司 | A kind of for processing the electrochemical appliance reclaiming organic heavy metal waste liquid |
| CN108793341A (en) * | 2018-06-21 | 2018-11-13 | 山东深信节能环保科技有限公司 | The method of absorption-electro-catalysis processing refractory organic waste water |
-
2018
- 2018-11-22 CN CN201811398773.4A patent/CN109205740A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3766035A (en) * | 1971-09-09 | 1973-10-16 | Mitsui Mining & Smelting Co | Method of separating metals from waste water |
| CN102603038A (en) * | 2012-04-11 | 2012-07-25 | 苏州科技学院 | Electrochemical reactor and method for processing organic pollutant in water |
| CN205687616U (en) * | 2016-06-20 | 2016-11-16 | 甘肃金创绿丰环境技术有限公司 | A kind of for processing the electrochemical appliance reclaiming organic heavy metal waste liquid |
| CN108793341A (en) * | 2018-06-21 | 2018-11-13 | 山东深信节能环保科技有限公司 | The method of absorption-electro-catalysis processing refractory organic waste water |
Non-Patent Citations (3)
| Title |
|---|
| 周生刚等: "《金属基层状复合功能材料的研制与性能》", 31 May 2015, 冶金工业出版社 * |
| 张招贤: "《钛电极工学 第2版》", 31 October 2000, 冶金工业出版社 * |
| 张招贤等: "《钛电极学导论》", 30 September 2008, 冶金工业出版社 * |
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