CN107151078A - Steel wastewater processing method - Google Patents
Steel wastewater processing method Download PDFInfo
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- CN107151078A CN107151078A CN201710401283.4A CN201710401283A CN107151078A CN 107151078 A CN107151078 A CN 107151078A CN 201710401283 A CN201710401283 A CN 201710401283A CN 107151078 A CN107151078 A CN 107151078A
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of steel wastewater processing method, comprise the following steps：Step 1: being passed through 2~3h of oxygen into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1~2:10, filter afterwards, the steel wastewater after filtering is mixed with alkaline conditioner, carry out neutralization reaction 3~5 minutes；Reacted 10~25 minutes Step 2: adding Sodium Metabisulfite, the mass volume ratio of Sodium Metabisulfite and steel wastewater is 5~10:100；Step 3: adding alkaline conditioner again, neutralization reaction 10~15 minutes is carried out；Reacted 5~15 minutes Step 4: adding Sodium Metabisulfite again, the mass volume ratio of Sodium Metabisulfite and steel wastewater is 1~3:100；Step 5: at 80~90 DEG C of temperature, 30~40min of steel wastewater in heating stepses four；12~36h of vacuum distillation is carried out Step 6: being carried out to the steel wastewater in step 5 at 50~80 DEG C of 3~5kPa of vacuum pressure and temperature；Wherein, alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle.
Description
Technical field
The present invention relates to a kind of steel wastewater processing method.
Background technology
The production process of modern steel industry includes the production technologies such as material choosing, iron, steel-making (continuous casting), steel rolling.Steel and iron industry
Waste water is mainly derived from production process water, equipment and product cooling water, flue gas washing and place and rinsed etc., but 70%
Waste water is also derived from cooling water.Indirect cooling water, after cooling can reuse in use only by thermal pollution；It is directly cold
But water with product material etc. because directly contacting, containing polluter, need to after processing can reuse or tandem use.How to steel
Waste water in iron smelting process is handled and reclaimed, in order to recycling, and the reduction energy and resource consumption, are permanent
Since the problem studied always.
The content of the invention
It is an object of the invention to solve at least the above and/or defect, and provide at least will be described later excellent
Point.
It is a still further object of the present invention to provide a kind of steel wastewater processing method.
Therefore, the technical scheme that the present invention is provided is：
A kind of steel wastewater processing method, including：
Step 1: being passed through 2~3h of oxygen into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1~2:10,
Filter afterwards, remove precipitation, afterwards mix the steel wastewater after filtering with alkaline conditioner, carry out 3~5 points of neutralization reaction
Clock；
Reacted 10~25 minutes Step 2: adding Sodium Metabisulfite, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 5~10:100；
Step 3: adding alkaline conditioner again, neutralization reaction 10~15 minutes is carried out；
Reacted 5~15 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite gives up with the steel
The mass volume ratio of water is 1~3:100；
Step 5: at 80~90 DEG C of temperature, 30~40min of steel wastewater in heating stepses four；
Carried out Step 6: being carried out to the steel wastewater in step 5 at 50~80 DEG C of 3~5kPa of vacuum pressure and temperature
12~36h of vacuum distillation；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 10~20:1.
Preferably, in described steel wastewater processing method, in the step one, the volume ratio of oxygen and steel wastewater
For 1.5:10.
Preferably, in described steel wastewater processing method, in the step 2, the Sodium Metabisulfite with it is described
The mass volume ratio of steel wastewater is 7.5:100.
Preferably, in described steel wastewater processing method, in the step one, the alkaline conditioner and the steel
The mass volume ratio of iron waste water is 3~5:20.
Preferably, in described steel wastewater processing method, in the step 3, the alkaline conditioner and the steel
The mass volume ratio of iron waste water is 3~5:30.
Preferably, in described steel wastewater processing method, in the step 6, the vacuum distillation is in vacuum pressure
Vacuum distillation 24h is carried out at 65 DEG C of 4kPa and temperature.
The present invention at least includes following beneficial effect：
The present invention is by co-oxidation reduction reaction, acid-base neutralization reaction and vacuum distillation processing method, in a short time
The processing of steel wastewater can be completed, can be recycled again, a kind of new way is provided for the processing of steel wastewater
Footpath, while also saving the energy, the efficiency of energy utilization improved in steel smelting procedure.The treatment effeciency of the present invention improves 5~
15%, efficiency of energy utilization improves 10~20%.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Embodiment
With reference to embodiment, the present invention is described in further detail, to make those skilled in the art with reference to specification
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or many
The presence or addition of individual other elements or its combination.
The present invention provides a kind of steel wastewater processing method, comprises the following steps：
Step 1: being passed through 2~3h of oxygen into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1~2:10,
Filter afterwards, remove precipitation, afterwards mix the steel wastewater after filtering with alkaline conditioner, carry out 3~5 points of neutralization reaction
Clock；
Reacted 10~25 minutes Step 2: adding Sodium Metabisulfite, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 5~10:100；
Step 3: adding alkaline conditioner again, neutralization reaction 10~15 minutes is carried out；
Reacted 5~15 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite gives up with the steel
The mass volume ratio of water is 1~3:100；
Step 5: at 80~90 DEG C of temperature, 30~40min of steel wastewater in heating stepses four；
Carried out Step 6: being carried out to the steel wastewater in step 5 at 50~80 DEG C of 3~5kPa of vacuum pressure and temperature
12~36h of vacuum distillation；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 10~20:1.
In one of embodiment of the present invention, preferably, in the step one, the volume of oxygen and steel wastewater
Than for 1.5:10.
In one of embodiment of the present invention, preferably, in the step 2, the Sodium Metabisulfite and institute
The mass volume ratio for stating steel wastewater is 7.5:100.
In one of embodiment of the present invention, preferably, in the step one, the alkaline conditioner with it is described
The mass volume ratio of steel wastewater is 3~5:20.
In one of embodiment of the present invention, preferably, in the step 3, the alkaline conditioner with it is described
The mass volume ratio of steel wastewater is 3~5:30.
In one of embodiment of the present invention, preferably, in the step 6, the vacuum distillation is in vacuum pressure
Vacuum distillation 24h is carried out at 65 DEG C of power 4kPa and temperature.
Embodiment 1
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 2h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1:10, mistake afterwards
Filter, removes precipitation, afterwards mixes the steel wastewater after filtering with alkaline conditioner, and the alkaline conditioner gives up with the steel
The mass volume ratio of water is 30:20, carry out neutralization reaction 3 minutes；
Reacted 105 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 5 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 10 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 3:30；
Reacted 5 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio is 1:100；
Step 5: at 80 DEG C of temperature, the steel wastewater 30min in heating stepses four；
Step 6: by the steel wastewater in step 5 in progress vacuum distillation 12 at 65 DEG C of vacuum pressure 14kPa and temperature
~36h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 11:1.
The treatment effeciency of the present invention improves 5%, and efficiency of energy utilization improves 10%.
Embodiment 2
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 3h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1.5:10, afterwards
Filtering, removes precipitation, afterwards mixes the steel wastewater after filtering with alkaline conditioner, the alkaline conditioner and the steel
The mass volume ratio of waste water is 50:20, carry out neutralization reaction 5 minutes；
Reacted 25 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 7.5 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 15 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 5:30；
Reacted 15 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 3:100；
Step 5: at 90 DEG C of temperature, the steel wastewater 40min in heating stepses four；
Step 6: by the steel wastewater in step 5 in progress vacuum distillation 12 at 90 DEG C of vacuum pressure 15kPa and temperature
~36h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 12:1.
The treatment effeciency of the present invention improves 15%, and efficiency of energy utilization improves 20%.
Embodiment 3
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 2.5h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1.1:10, it
After filter, remove precipitation, afterwards mix the steel wastewater after filtering with alkaline conditioner, the alkaline conditioner and the steel
The mass volume ratio of iron waste water is 32:20, carry out neutralization reaction 4 minutes；
Reacted 12 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 6 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 11 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 3.5:30；
Reacted 6 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio is 1.5:100；
Step 5: at 81 DEG C of temperature, the steel wastewater 31min in heating stepses four；
Step 6: by the steel wastewater in step 5 in progress vacuum distillation 12 at 65 DEG C of vacuum pressure 14kPa and temperature
~36h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 13:1.
The treatment effeciency of the present invention improves 6%, and efficiency of energy utilization improves 11%.
Embodiment 4
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 2.2h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1~2:10,
Filter afterwards, remove precipitation, the steel wastewater after filtering is mixed with alkaline conditioner afterwards, the alkaline conditioner with it is described
The mass volume ratio of steel wastewater is 34:20, carry out neutralization reaction 3.2 minutes；
Reacted 14 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 6 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 12 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 3.3:30；
Reacted 7 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio is 1.8:100；
Step 5: at 82 DEG C of temperature, the steel wastewater 33min in heating stepses four；
Step 6: by the steel wastewater in step 5 in carrying out vacuum distillation at 65 DEG C of vacuum pressure 14kPa and temperature
16h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 14:1.
The treatment effeciency of the present invention improves 7%, and efficiency of energy utilization improves 12%.
Embodiment 5
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 2.8h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1.6:10, it
After filter, remove precipitation, afterwards mix the steel wastewater after filtering with alkaline conditioner, the alkaline conditioner and the steel
The mass volume ratio of iron waste water is 35:20, carry out neutralization reaction 3.5 minutes；
Reacted 15 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 10 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 13 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 4.5:30；
Reacted 12 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 1~3:100；
Step 5: at 86 DEG C of temperature, the steel wastewater 36min in heating stepses four；
Step 6: by the steel wastewater in step 5 in progress vacuum distillation 12 at 65 DEG C of vacuum pressure 14kPa and temperature
~36h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 15:1.
The treatment effeciency of the present invention improves 8%, and efficiency of energy utilization improves 12%.
Embodiment 6
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 2.9h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1.9:10, it
After filter, remove precipitation, afterwards mix the steel wastewater after filtering with alkaline conditioner, the alkaline conditioner and the steel
The mass volume ratio of iron waste water is 30~50:20, carry out neutralization reaction 3~5 minutes；
Reacted 10~25 minutes Step 2: adding Sodium Metabisulfite, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 8:100；
Step 3: adding alkaline conditioner again, neutralization reaction 14.5 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of iron waste water is 4.8:30；
Reacted 13 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 2.8:100；
Step 5: at 88 DEG C of temperature, the steel wastewater 8min in heating stepses four；
Step 6: by the steel wastewater in step 5 in carrying out vacuum distillation at 65 DEG C of vacuum pressure 14kPa and temperature
30h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 16:1.
The treatment effeciency of the present invention improves 9%, and efficiency of energy utilization improves 13%.
Embodiment 7
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 2h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 2:10, mistake afterwards
Filter, removes precipitation, afterwards mixes the steel wastewater after filtering with alkaline conditioner, and the alkaline conditioner gives up with the steel
The mass volume ratio of water is 48:20, carry out neutralization reaction 4 minutes；
Reacted 23 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 8 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 13 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 4:30；
Reacted 12 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 2:100；
Step 5: at 87 DEG C of temperature, the steel wastewater 36min in heating stepses four；
Step 6: by the steel wastewater in step 5 in carrying out vacuum distillation at 65 DEG C of vacuum pressure 14kPa and temperature
25h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 17:1.
The treatment effeciency of the present invention improves 9%, and efficiency of energy utilization improves 19%.
Embodiment 8
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 3h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 2:10, mistake afterwards
Filter, removes precipitation, afterwards mixes the steel wastewater after filtering with alkaline conditioner, and the alkaline conditioner gives up with the steel
The mass volume ratio of water is 45:20, carry out neutralization reaction 4 minutes；
Reacted 21 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 7 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 15 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 4:30；
Reacted 13 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 2:100；
Step 5: at 87 DEG C of temperature, the steel wastewater 38min in heating stepses four；
Step 6: by the steel wastewater in step 5 in progress vacuum distillation 12 at 65 DEG C of vacuum pressure 14kPa and temperature
~36h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 18:1.
The treatment effeciency of the present invention improves 14%, and efficiency of energy utilization improves 18%.
Embodiment 9
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 3h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 2:10, mistake afterwards
Filter, removes precipitation, afterwards mixes the steel wastewater after filtering with alkaline conditioner, and the alkaline conditioner gives up with the steel
The mass volume ratio of water is 43:20, carry out neutralization reaction 5 minutes；
Reacted 19 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 8 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 12 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 4:30；
Reacted 13 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 2:100；
Step 5: at 86 DEG C of temperature, the steel wastewater 33min in heating stepses four；
Step 6: by the steel wastewater in step 5 in carrying out vacuum distillation at 65 DEG C of vacuum pressure 14kPa and temperature
26h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 19:1.
The treatment effeciency of the present invention improves 13%, and efficiency of energy utilization improves 17%.
Embodiment 10
Steel wastewater immediate processing method, comprises the following steps：
Step 1: being passed through oxygen 3h into steel wastewater first, the volume ratio of oxygen and steel wastewater is 2:10, mistake afterwards
Filter, removes precipitation, afterwards mixes the steel wastewater after filtering with alkaline conditioner, and the alkaline conditioner gives up with the steel
The mass volume ratio of water is 50:20, carry out neutralization reaction 5 minutes；
Reacted 17 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 7 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 13 minutes, the alkaline conditioner and the steel are carried out
The mass volume ratio of waste water is 4:30；
Reacted 13 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio be 2:100；
Step 5: at 86 DEG C of temperature, the steel wastewater 37min in heating stepses four；
Step 6: the steel wastewater in step 5 is carried out at into progress decompression steaming at 65 DEG C of vacuum pressure 14kPa and temperature
Evaporate 20h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydrogen
The mass ratio of sodium oxide molybdena and nano level active charcoal particle is 20:1.
The treatment effeciency of the present invention improves 12%, and efficiency of energy utilization improves 18%.
Comparative example
Steel wastewater processing is completed according to prior art.
Module number and treatment scale described herein are the explanations for simplifying the present invention.The steel of the present invention is given up
The application of method for treating water, modifications and variations will be readily apparent to persons skilled in the art.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the embodiment with description.
Claims (6)
1. a kind of steel wastewater processing method, it is characterised in that comprise the following steps：
Step 1: being passed through 2~3h of oxygen into steel wastewater first, the volume ratio of oxygen and steel wastewater is 1~2:10, afterwards
Filtering, removes precipitation, afterwards mixes the steel wastewater after filtering with alkaline conditioner, carries out neutralization reaction 3~5 minutes；
Reacted 10~25 minutes Step 2: adding Sodium Metabisulfite, the matter of the Sodium Metabisulfite and the steel wastewater
It is 5~10 to measure volume ratio:100；
Step 3: adding alkaline conditioner again, neutralization reaction 10~15 minutes is carried out；
Reacted 5~15 minutes Step 4: adding Sodium Metabisulfite again, the Sodium Metabisulfite and the steel wastewater
Mass volume ratio is 1~3:100；
Step 5: at 80~90 DEG C of temperature, 30~40min of steel wastewater in heating stepses four；
Depressurized Step 6: being carried out to the steel wastewater in step 5 at 50~80 DEG C of 3~5kPa of vacuum pressure and temperature
Distill 12~36h；
Wherein, the alkaline conditioner includes quick lime or sodium hydroxide and nano level active charcoal particle, quick lime or hydroxide
The mass ratio of sodium and nano level active charcoal particle is 10~20:1.
2. steel wastewater processing method as claimed in claim 1, it is characterised in that in the step one, oxygen gives up with steel
The volume ratio of water is 1.5:10.
3. steel wastewater processing method as claimed in claim 1, it is characterised in that in the step 2, the weighting sulfurous
The mass volume ratio of sour sodium and the steel wastewater is 7.5:100.
4. steel wastewater processing method as claimed in claim 1, it is characterised in that in the step one, the alkalescence regulation
The mass volume ratio of agent and the steel wastewater is 3~5:20.
5. steel wastewater processing method as claimed in claim 1, it is characterised in that in the step 3, the alkalescence regulation
The mass volume ratio of agent and the steel wastewater is 3~5:30.
6. steel wastewater processing method as claimed in claim 1, it is characterised in that in the step 6, the vacuum distillation
In progress vacuum distillation 24h at 65 DEG C of vacuum pressure 4kPa and temperature.
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| CN201710401283.4A CN107151078A (en) | 2017-05-31 | 2017-05-31 | Steel wastewater processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759572A (en) * | 2019-11-03 | 2020-02-07 | 江苏荣辉电力设备制造有限公司 | Iron tower hot galvanizing waste water's environmental protection processing system |
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| CN102583860A (en) * | 2012-02-17 | 2012-07-18 | 江苏加德绿色能源有限公司 | Novel steel quality inspection wastewater treatment method |
| CN105084493A (en) * | 2015-09-28 | 2015-11-25 | 宁波高新区巴艺新材料科技有限公司 | Steel wastewater treatment method |
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| CN102398970A (en) * | 2010-09-13 | 2012-04-04 | 陈亚芬 | Steel waste water treating agent |
| CN102583860A (en) * | 2012-02-17 | 2012-07-18 | 江苏加德绿色能源有限公司 | Novel steel quality inspection wastewater treatment method |
| CN105084493A (en) * | 2015-09-28 | 2015-11-25 | 宁波高新区巴艺新材料科技有限公司 | Steel wastewater treatment method |
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| CN110759572A (en) * | 2019-11-03 | 2020-02-07 | 江苏荣辉电力设备制造有限公司 | Iron tower hot galvanizing waste water's environmental protection processing system |
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