CN109231585A - A kind of waste water treatment process of electrolytic manganese metal - Google Patents
A kind of waste water treatment process of electrolytic manganese metal Download PDFInfo
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- CN109231585A CN109231585A CN201811376878.XA CN201811376878A CN109231585A CN 109231585 A CN109231585 A CN 109231585A CN 201811376878 A CN201811376878 A CN 201811376878A CN 109231585 A CN109231585 A CN 109231585A
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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
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/206—Manganese or manganese compounds
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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
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of waste water treatment process of electrolytic manganese metal, includes the following steps the waste water generated during (1) collects electrolytic manganese metal and stirred evenly after being mixed, measure the temperature and content of 6-valence Cr ions of waste water；(2) waste water is heated according to measurement temperature in step (1), its temperature is made to be kept for 30~40 DEG C；(3) according to the content of 6-valence Cr ions addition neutralizer stirring of step (1) measurement on the basis of step (2), mixing speed is 200~300r/min, and mixing time is 8~10min；(4) pH value for adjusting waste water, makes its pH value be maintained at 9~10, then adds flocculant and is stirred, and mixing speed is 150~250r/min, and mixing time is 5~7min, carry out staticly settling 12 after stirring~for 24 hours；(5) it is separated by solid-liquid separation after precipitating, liquid discharges after being handled by chemical oxidization method, and solid after elution and drying by being recycled.The present invention not only can carry out the waste water metal manganese that electrolytic manganese metal generates to purify qualified discharge, can also be recycled the metal in waste water.
Description
Technical field
The present invention relates to technical field of waste water processing, and in particular to a kind of waste water treatment process of electrolytic manganese metal.
Background technique
Electrolytic manganese generates that waste component is complicated, pollutional load weight, in waste water containing total manganese, Cr VI, total chromium, suspended matter,
The multiple pollutants such as sulfate, ammonia nitrogen, this substance are both a kind of pollutant and a kind of resource.The prior art is useless to electrolytic manganese
Water process is to reach discharge standard simply by removing the Cr VI in waste water after the processing that suspends.There is no to useless
The benefit materials of water are recycled, and the waste of resource is caused.
Summary of the invention
The purpose of the present invention is to provide the benefit materials in a kind of recyclable Electrolytic Manganese Wastewater and waste water is made to reach row
Put the waste water treatment process of the electrolytic manganese metal of standard.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of waste water treatment process of electrolytic manganese metal, includes the following steps:
(1) it collects the waste water generated during electrolytic manganese metal and is stirred evenly after being mixed, measure the temperature of waste water
And content of 6-valence Cr ions；
(2) waste water is heated according to measurement temperature in step (1), its temperature is made to be kept for 30~40 DEG C；
(3) according to the content of 6-valence Cr ions addition neutralizer stirring of step (1) measurement, stirring speed on the basis of step (2)
Degree is 200~300r/min, and mixing time is 8~10min；
(4) pH value for adjusting waste water, makes its pH value be maintained at 9~10, then adds flocculant and is stirred, mixing speed
For 150~250r/min, mixing time is 5~7min, carry out staticly settling 12 after stirring~for 24 hours；
(5) precipitate after be separated by solid-liquid separation, liquid discharges after being handled by chemical oxidization method, solid by elution with
It is recycled after drying.
Further, the neutralizer is iron powder and sulfuric acid mixture.
Further, it is 35g/L polymerization chlorine molysite that the flocculant, which is concentration,.
Further, the chemical oxidization method refers to is sent into waste water oxidation tank internal oxidition in a manner of spraying, the oxygen
The top for changing tank is equipped with spray equipment, and middle part is equipped with oxide layer, and bottom is equipped with aerator, the air inlet of aerator with it is smelly
Oxygengenerating plant connection, the oxide layer are titanium dioxide.
The present invention have the utility model has the advantages that
(1) metal in the waste water of electrolytic manganese metal generation can be translated into sediment by neutralizer and flocculant,
To the metal that sediment undergoes washing adds after dry, recoverable；
(2) titanium dioxide and ozone reaction generate a large amount of hydroxyl radical free radical OH, when waste water enters in oxidation tank, with oxygen
Change the ozone in tower and directly react generation a large amount of CO2, H2O and RCOOH, is generated with hydroxyl radical free radical OH indirect reaction a large amount of
CO2, H2O and RCOOH, and product RCOOH can also react again with ozone and generate hydroxyl radical free radical OH, it finally can in oxidizing tower
It forms oxidation and promotes film, economize on resources.
Specific embodiment
Embodiment 1
The waste water treatment process of electrolytic manganese metal provided in this embodiment includes the following steps:
(1) it collects the waste water generated during electrolytic manganese metal and is stirred evenly after being mixed, measure the temperature of waste water
And content of 6-valence Cr ions；
(2) waste water is heated according to measurement temperature in step (1), so that its temperature is kept for 30 DEG C, this temperature is advantageous
It is chemically reacted in neutralizer, the flocculant in later period；
(3) according to the content of 6-valence Cr ions addition neutralizer stirring of step (1) measurement, stirring speed on the basis of step (2)
Degree is 200r/min, and mixing time 10min, the additive amount of neutralizer is that content of 6-valence Cr ions adds 2, makes hexavalent chrome reduction thorough,
The neutralizer is iron powder and sulfuric acid mixture, and the specific iron content of the recycling of addition is that content of 6-valence Cr ions adds 2, sulfuric acid and iron powder
Mass ratio be 1:1.
(4) pH value for adjusting waste water, makes its pH value be maintained at 9, then adds flocculant and is stirred, mixing speed is
150r/min, mixing time 7min carry out staticly settling 124h after stirring；The flocculant is that concentration is 35g/L polymerization chlorine
Molysite, additive amount are that IL waste water adds 4L；
(5) it is separated by solid-liquid separation after precipitating, for solid by being recycled after elution and drying, liquid passes through chemical oxidization method
It is discharged after being handled.The chemical oxidization method refers to is sent into waste water oxidation tank internal oxidition in a manner of spraying.
The oxidation tank includes tank body and the intracorporal spray equipment of setting tank, oxide layer and aerator, the spray
Device is located at the top of tank body, it includes the water pipe and be mounted on water pipe side wall top nozzle that end is closed end, and nozzle is downward
Setting, the water pipe pass through tank body and connect with waste water, are being located at below spray equipment for spraying waste water in a manner of spraying
Oxide layer, the oxide layer includes starting the shell of several ventholes and being filled in the intracorporal titanium dioxide of shell.The tank
The bottom of body is equipped with aeration tube, and the beginning of aeration tube stretches out outside tank body and be connected with ozone generating-device, and ozone generating-device produces
Raw ozone, which react with the titanium dioxide in oxide layer, generates a large amount of hydroxyl (OH), and waste water is aoxidized with ozone first
Then with hydroxyl oxidation reaction occurs for reaction, and the oxygenation efficiency than traditional chemical oxidization method is high, is more suitable for discharging.Specifically, two
Titanium oxide and ozone reaction generate a large amount of hydroxyl radical free radical OH, when waste water enters in oxidation tank, with the ozone in oxidizing tower
Directly reaction generates a large amount of CO2, H2O and RCOOH, with hydroxyl radical free radical OH indirect reaction generate a large amount of CO2, H2O and
RCOOH, and product RCOOH can also react again with ozone and generate hydroxyl radical free radical OH, and oxidation can be finally formed in oxidizing tower
Promote film, economizes on resources.
Embodiment 2
The waste water treatment process of electrolytic manganese metal provided in this embodiment includes the following steps:
(1) it collects the waste water generated during electrolytic manganese metal and is stirred evenly after being mixed, measure the temperature of waste water
And content of 6-valence Cr ions；
(2) waste water is heated according to measurement temperature in step (1), so that its temperature is kept for 35 DEG C, this temperature is advantageous
It is chemically reacted in neutralizer, the flocculant in later period；
(3) according to the content of 6-valence Cr ions addition neutralizer stirring of step (1) measurement, stirring speed on the basis of step (2)
Degree is 250r/min, and mixing time 9min, the additive amount of neutralizer is that content of 6-valence Cr ions adds 2, makes hexavalent chrome reduction thorough, institute
Stating neutralizer is iron powder and sulfuric acid mixture, and the specific iron content of the recycling of addition is that content of 6-valence Cr ions adds 2, sulfuric acid and iron powder
Mass ratio is 1:1.
(4) pH value for adjusting waste water, makes its pH value be maintained at 9.5, then adds flocculant and is stirred, mixing speed is
200r/min, mixing time 6min carry out staticly settling 18h after stirring；The flocculant is that concentration is 35g/L polymerization chlorine iron
Salt, additive amount are that IL waste water adds 5L；
(5) it is separated by solid-liquid separation after precipitating, for solid by being recycled after elution and drying, liquid passes through chemical oxidization method
It is discharged after being handled.The chemical oxidization method refers to is sent into waste water oxidation tank internal oxidition in a manner of spraying.
The oxidation tank includes tank body and the intracorporal spray equipment of setting tank, oxide layer and aerator, the spray
Device is located at the top of tank body, it includes the water pipe and be mounted on water pipe side wall top nozzle that end is closed end, and nozzle is downward
Setting, the water pipe pass through tank body and connect with waste water, are being located at below spray equipment for spraying waste water in a manner of spraying
Oxide layer, the oxide layer includes starting the shell of several ventholes and being filled in the intracorporal titanium dioxide of shell.The tank
The bottom of body is equipped with aeration tube, and the beginning of aeration tube stretches out outside tank body and be connected with ozone generating-device, and ozone generating-device produces
Raw ozone, which react with the titanium dioxide in oxide layer, generates a large amount of hydroxyl (OH), and waste water is aoxidized with ozone first
Then with hydroxyl oxidation reaction occurs for reaction, and the oxygenation efficiency than traditional chemical oxidization method is high, is more suitable for discharging.Specifically, two
Titanium oxide and ozone reaction generate a large amount of hydroxyl radical free radical OH, when waste water enters in oxidation tank, with the ozone in oxidizing tower
Directly reaction generates a large amount of CO2, H2O and RCOOH, with hydroxyl radical free radical OH indirect reaction generate a large amount of CO2, H2O and
RCOOH, and product RCOOH can also react again with ozone and generate hydroxyl radical free radical OH, and oxidation can be finally formed in oxidizing tower
Promote film, economizes on resources.
Embodiment 3
The waste water treatment process of electrolytic manganese metal provided in this embodiment includes the following steps:
(1) it collects the waste water generated during electrolytic manganese metal and is stirred evenly after being mixed, measure the temperature of waste water
And content of 6-valence Cr ions；
(2) waste water is heated according to measurement temperature in step (1), so that its temperature is kept for 40 DEG C, this temperature is advantageous
It is chemically reacted in neutralizer, the flocculant in later period；
(3) according to the content of 6-valence Cr ions addition neutralizer stirring of step (1) measurement, stirring speed on the basis of step (2)
Degree is 300r/min, and mixing time 10min, the additive amount of neutralizer is that content of 6-valence Cr ions adds 2, makes hexavalent chrome reduction thorough,
The neutralizer is iron powder and sulfuric acid mixture, and the specific iron content of the recycling of addition is that content of 6-valence Cr ions adds 2, sulfuric acid and iron powder
Mass ratio be 1:1.
(4) pH value for adjusting waste water, makes its pH value be maintained at 10, then adds flocculant and is stirred, mixing speed is
250r/min, mixing time 5min are staticly settled for 24 hours after stirring；The flocculant is that concentration is 35g/L polymerization chlorine iron
Salt, additive amount are that IL waste water adds 5L；
(5) it is separated by solid-liquid separation after precipitating, for solid by being recycled after elution and drying, liquid passes through chemical oxidization method
It is discharged after being handled.The chemical oxidization method refers to is sent into waste water oxidation tank internal oxidition in a manner of spraying.
The oxidation tank includes tank body and the intracorporal spray equipment of setting tank, oxide layer and aerator, the spray
Device is located at the top of tank body, it includes the water pipe and be mounted on water pipe side wall top nozzle that end is closed end, and nozzle is downward
Setting, the water pipe pass through tank body and connect with waste water, are being located at below spray equipment for spraying waste water in a manner of spraying
Oxide layer, the oxide layer includes starting the shell of several ventholes and being filled in the intracorporal titanium dioxide of shell.The tank
The bottom of body is equipped with aeration tube, and the beginning of aeration tube stretches out outside tank body and be connected with ozone generating-device, and ozone generating-device produces
Raw ozone, which react with the titanium dioxide in oxide layer, generates a large amount of hydroxyl (OH), and waste water is aoxidized with ozone first
Then with hydroxyl oxidation reaction occurs for reaction, and the oxygenation efficiency than traditional chemical oxidization method is high, is more suitable for discharging.Specifically, two
Titanium oxide and ozone reaction generate a large amount of hydroxyl radical free radical OH, when waste water enters in oxidation tank, with the ozone in oxidizing tower
Directly reaction generates a large amount of CO2, H2O and RCOOH, with hydroxyl radical free radical OH indirect reaction generate a large amount of CO2, H2O and
RCOOH, and product RCOOH can also react again with ozone and generate hydroxyl radical free radical OH, and oxidation can be finally formed in oxidizing tower
Promote film, economizes on resources.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The transformation and replacement carried out based on technical solution provided by the present invention and inventive concept should all be covered in protection model of the invention
In enclosing.
Claims (4)
1. a kind of waste water treatment process of electrolytic manganese metal, it is characterised in that include the following steps:
(1) it collects the waste water generated during electrolytic manganese metal and is stirred evenly after being mixed, measure the temperature and six of waste water
Valence chromium content；
(2) waste water is heated according to measurement temperature in step (1), its temperature is made to be kept for 30~40 DEG C；
(3) according to the content of 6-valence Cr ions addition neutralizer stirring of step (1) measurement on the basis of step (2), mixing speed is
200~300r/min, mixing time are 8~10min；
(4) pH value for adjusting waste water, makes its pH value be maintained at 9~10, then adds flocculant and is stirred, mixing speed is
150~250r/min, mixing time are 5~7min, carry out staticly settling 12 after stirring~for 24 hours；
(5) it is separated by solid-liquid separation after precipitating, liquid discharges after being handled by chemical oxidization method, and solid passes through elution and drying
After recycled.
2. the waste water treatment process of electrolytic manganese metal according to claim 1, it is characterised in that: the neutralizer is iron powder
And sulfuric acid mixture.
3. the waste water treatment process of electrolytic manganese metal according to claim 1, it is characterised in that: the flocculant is concentration
It polymerize chlorine molysite for 35g/L.
4. the waste water treatment process of electrolytic manganese metal according to claim 1, it is characterised in that: the chemical oxidization method is
Waste water is sent into oxidation tank internal oxidition by finger in a manner of spraying, and the top of the oxidation tank is equipped with spray equipment, and middle part is equipped with
Oxide layer, bottom are equipped with aerator, and the air inlet of aerator is connect with ozone generating-device, and the oxide layer is titanium dioxide
Titanium.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277654A (en) * | 2021-05-28 | 2021-08-20 | 金川集团股份有限公司 | Method and device for treating electrodeposition high-purity manganese waste liquid by using electrochemical method |
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Application publication date: 20190118 |
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