CN110845061A - Treatment method of organic wastewater containing tar - Google Patents
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- 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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- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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Abstract
The invention discloses a method for treating organic wastewater containing tar, which is characterized by comprising the following steps: the method specifically comprises the following steps: preparing raw materials: preparing 2L of organic wastewater needing tar removal, preparing 70-100 g of demulsifier, 70-100 g of coagulant, 5-10 g of semiconductor and 0.05-0.1 g of graphene used for tar removal, storing the organic wastewater, the demulsifier, the coagulant, the semiconductor, the graphene and other materials in a container, and inspecting raw materials: and materials such as a demulsifier, a coagulant, a semiconductor, graphene and the like used for removing tar are checked. The method for treating the organic wastewater containing the tar has the advantages of simple operation, less investment equipment, less required materials, correspondingly low consumed energy, convenient preparation for operators, better tar removal effect on the organic wastewater, effective reduction of COD (chemical oxygen demand) in the organic wastewater, and more than 95% removal rate of the tar, so that the method has good popularization and good economic and social benefits.
Description
Technical Field
The invention relates to the technical field of organic wastewater treatment methods, in particular to a method for treating tar-containing organic wastewater.
Background
The organic wastewater is mainly organic pollutants, and is easy to cause water eutrophication and has large harm. The organic wastewater generally refers to the wastewater discharged by industries such as paper making, leather, food and the like and is more than 2000 mg/L.
The treatment method of the organic wastewater containing the tar has the advantages of simple operation, less investment equipment, less required materials, correspondingly low consumed energy, convenient preparation for operators, better tar removal effect on the organic wastewater, effective reduction of COD (chemical oxygen demand) in the organic wastewater, and removal rate of the tar up to more than 95 percent, so that the treatment method has good popularization, thereby having good economic benefit and social benefit
At present, the steps of the treatment method for the tar in the organic wastewater are more, more complex and more tedious, the materials needed to be used for the treatment work are more, the industrial equipment needed to be used is more, the cost is higher, and the removal rate of the tar in the organic wastewater is lower.
Disclosure of Invention
The invention aims to provide a method for treating tar-containing organic wastewater, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a treatment method of organic wastewater containing tar comprises the following steps:
s1, preparing raw materials: preparing 2L of organic wastewater needing tar removal, preparing 70-100 g of demulsifier, 70-100 g of coagulant, 5-10 g of semiconductor and 0.05-0.1 g of graphene used for tar removal, and respectively storing the organic wastewater, the demulsifier, the coagulant, the semiconductor, the graphene and other materials in a container.
S2, raw material inspection: materials such as demulsifiers, coagulants, semiconductors, graphene and the like used for detecting and removing tar need to be replaced if the materials have quality which does not reach the standard or have no use effect.
S3, oil-water layering treatment: putting organic wastewater into a reaction tank, adding a prepared demulsifier into the organic wastewater, stirring by using stirring equipment, standing the mixed organic wastewater for 2-6 h, reacting the demulsifier with tar, and layering the tar and water to obtain primary treated water.
S4, organic wastewater purification treatment: and (3) putting the prepared coagulant into the primary treated water subjected to oil-water layering treatment, standing for 2-6 h, and finishing the purification treatment of the primary treated water to obtain secondary treated water.
S5, photocatalyst preparation: the semiconductor and the graphene are mixed and loaded in a container, a proper amount of solvent is added, the container is placed in ultrasonic equipment, the ultrasonic equipment is started for 10-20 hours, then filtration is carried out, and the semiconductor and the graphene can be self-assembled together through the acting force of static electricity to form the binary composite catalyst.
S6, degradation treatment: adding the prepared binary composite catalyst into secondary treated water obtained by purifying organic wastewater, and carrying out photocatalytic degradation reaction on the secondary treated water through the binary composite catalyst to finish the tar removal work of the secondary treated water, thereby obtaining tertiary treated water.
S7, disinfection detection: ozone is generated by the ozone generator, the generated ozone is introduced into the tertiary treatment water, the tertiary treatment water is disinfected by the ozone, clean and impurity-free water is obtained, the obtained water is detected by the detection equipment, and the tar removal effect in the organic wastewater is confirmed.
Preferably, 75g of demulsifier, 75g of coagulant, 8g of semiconductor and 0.08g of graphene are used for removing tar, which are prepared in the raw material catching step.
Preferably, the containers used in the raw material preparation step and the photocatalyst preparation step are all open glass bottles.
Preferably, the model of the stirring equipment used in the oil-water stratification treatment equipment and the organic wastewater purification treatment step is JJ-1.
Preferably, the coagulant used in the step of purifying the organic wastewater is an aluminum salt, an iron salt, polyaluminium or the like.
Preferably, the semiconductor material in the photocatalyst preparation step is titanium dioxide, tungsten trioxide, niobium pentoxide, or the like.
Preferably, the ultrasonic equipment in the photocatalyst preparation step is an ultrasonic generator.
Preferably, the ozone generator in the sterilization detection step has a model of FL-803S.
Compared with the prior art, the invention has the beneficial effects that: the treatment method of the organic wastewater containing the tar has the advantages of simple operation, less investment equipment, less required materials, correspondingly low consumed energy, convenient preparation for operators, better tar removal effect on the organic wastewater, effective reduction of COD (chemical oxygen demand) in the organic wastewater, and removal rate of the tar up to more than 95 percent, so that the treatment method has good popularization and good economic and social benefits.
Drawings
FIG. 1 is a flow chart showing the steps of a method for treating tar-containing organic wastewater according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the present invention provides the following technical solutions:
a treatment method of organic wastewater containing tar comprises the following steps:
s1, preparing raw materials: preparing 2L of organic wastewater needing tar removal, preparing 70-100 g of demulsifier, 70-100 g of coagulant, 5-10 g of semiconductor and 0.05-0.1 g of graphene used for tar removal, and respectively storing the organic wastewater, the demulsifier, the coagulant, the semiconductor, the graphene and other materials in a container.
S2, raw material inspection: materials such as demulsifiers, coagulants, semiconductors, graphene and the like used for detecting and removing tar need to be replaced if the materials have quality which does not reach the standard or have no use effect.
S3, oil-water layering treatment: putting organic wastewater into a reaction tank, adding a prepared demulsifier into the organic wastewater, stirring by using stirring equipment, standing the mixed organic wastewater for 2-6 h, reacting the demulsifier with tar, and layering the tar and water to obtain primary treated water.
S4, organic wastewater purification treatment: and (3) putting the prepared coagulant into the primary treated water subjected to oil-water layering treatment, standing for 2-6 h, and finishing the purification treatment of the primary treated water to obtain secondary treated water.
S5, photocatalyst preparation: the semiconductor and the graphene are mixed and loaded in a container, a proper amount of solvent is added, the container is placed in ultrasonic equipment, the ultrasonic equipment is started for 10-20 hours, then filtration is carried out, and the semiconductor and the graphene can be self-assembled together through the acting force of static electricity to form the binary composite catalyst.
S6, degradation treatment: adding the prepared binary composite catalyst into secondary treated water obtained by purifying organic wastewater, and carrying out photocatalytic degradation reaction on the secondary treated water through the binary composite catalyst to finish the tar removal work of the secondary treated water, thereby obtaining tertiary treated water.
S7, disinfection detection: ozone is generated by the ozone generator, the generated ozone is introduced into the tertiary treatment water, the tertiary treatment water is disinfected by the ozone, clean and impurity-free water is obtained, the obtained water is detected by the detection equipment, and the tar removal effect in the organic wastewater is confirmed.
75g of demulsifier, 75g of coagulant, 8g of semiconductor and 0.08g of graphene which are prepared in the step of catching the raw materials and are used for removing tar.
The containers used in the raw material preparation step and the photocatalyst preparation step are all open glass bottles, and operators can conveniently observe the condition of the treated organic wastewater in the subsequent steps.
The model of the stirring equipment used in the oil-water layering treatment equipment and the organic wastewater purification treatment step is JJ-1.
The coagulant used in the step of purifying the organic wastewater is made of aluminum salt, ferric salt, polyaluminium and the like.
The semiconductor material in the photocatalyst preparation step is titanium dioxide, tungsten trioxide, niobium pentoxide and the like.
The ultrasonic equipment in the photocatalyst preparation step is an ultrasonic generator.
The model of the ozone generator in the disinfection detection step is FL-803S.
Example 2
Referring to fig. 1, the present invention provides the following technical solutions:
a treatment method of organic wastewater containing tar comprises the following steps:
s1, preparing raw materials: 2L of organic wastewater to be subjected to tar removal is prepared, 80g of demulsifier, 80g of coagulant, 7g of semiconductor and 0.07g of graphene used for tar removal are prepared, and the organic wastewater, the demulsifier, the coagulant, the semiconductor, the graphene and other materials are respectively stored in a container.
S2, raw material inspection: materials such as demulsifiers, coagulants, semiconductors, graphene and the like used for detecting and removing tar need to be replaced if the materials have quality which does not reach the standard or have no use effect.
S3, oil-water layering treatment: putting the organic wastewater into a reaction tank, adding the prepared demulsifier into the organic wastewater, stirring by using stirring equipment, standing the mixed organic wastewater for 5 hours, reacting the demulsifier with tar, and layering the tar and water to obtain primary treated water.
S4, organic wastewater purification treatment: and (3) putting the prepared coagulant into the primary treated water subjected to oil-water layering treatment, standing for 5 hours, and finishing the purification treatment of the primary treated water to obtain secondary treated water.
S5, photocatalyst preparation: the semiconductor and the graphene are mixed and loaded in a container, a proper amount of solvent is added, the container is placed in ultrasonic equipment, the ultrasonic equipment is started for 10-20 hours, then filtration is carried out, and the semiconductor and the graphene can be self-assembled together through the acting force of static electricity to form the binary composite catalyst.
S6, degradation treatment: adding the prepared binary composite catalyst into secondary treated water obtained by purifying organic wastewater, and carrying out photocatalytic degradation reaction on the secondary treated water through the binary composite catalyst to finish the tar removal work of the secondary treated water, thereby obtaining tertiary treated water.
S7, disinfection detection: ozone is generated by the ozone generator, the generated ozone is introduced into the tertiary treatment water, the tertiary treatment water is disinfected by the ozone, clean and impurity-free water is obtained, the obtained water is detected by the detection equipment, and the tar removal effect in the organic wastewater is confirmed.
75g of demulsifier, 75g of coagulant, 7g of semiconductor and 0.07g of graphene which are prepared in the step of catching the raw materials and are used for removing tar.
The containers used in the raw material preparation step and the photocatalyst preparation step are all open glass bottles, and operators can conveniently observe the condition of the treated organic wastewater in the subsequent steps.
The model of the stirring equipment used in the oil-water layering treatment equipment and the organic wastewater purification treatment step is JJ-1.
The coagulant used in the step of purifying the organic wastewater is made of aluminum salt, ferric salt, polyaluminium and the like.
The semiconductor material in the photocatalyst preparation step is titanium dioxide, tungsten trioxide, niobium pentoxide and the like.
The ultrasonic equipment in the photocatalyst preparation step is an ultrasonic generator.
The model of the ozone generator in the disinfection detection step is FL-803S.
Example 3
Referring to fig. 1, the present invention provides the following technical solutions:
a treatment method of organic wastewater containing tar comprises the following steps:
s1, preparing raw materials: 2L of organic wastewater to be subjected to tar removal is prepared, 90g of demulsifier, 90g of coagulant, 9g of semiconductor and 0.09g of graphene used for tar removal are prepared, and the organic wastewater, the demulsifier, the coagulant, the semiconductor, the graphene and other materials are respectively stored in a container.
S2, raw material inspection: materials such as demulsifiers, coagulants, semiconductors, graphene and the like used for detecting and removing tar need to be replaced if the materials have quality which does not reach the standard or have no use effect.
S3, oil-water layering treatment: putting the organic wastewater into a reaction tank, adding the prepared demulsifier into the organic wastewater, stirring by using stirring equipment, standing the mixed organic wastewater for 5 hours, reacting the demulsifier with tar, and layering the tar and water to obtain primary treated water.
S4, organic wastewater purification treatment: and (3) putting the prepared coagulant into the primary treated water subjected to oil-water layering treatment, standing for 5 hours, and finishing the purification treatment of the primary treated water to obtain secondary treated water.
S5, photocatalyst preparation: the semiconductor and the graphene are mixed and loaded in a container, a proper amount of solvent is added, the container is placed in ultrasonic equipment, the ultrasonic equipment is started for 10-20 hours, then filtration is carried out, and the semiconductor and the graphene can be self-assembled together through the acting force of static electricity to form the binary composite catalyst.
S6, degradation treatment: adding the prepared binary composite catalyst into secondary treated water obtained by purifying organic wastewater, and carrying out photocatalytic degradation reaction on the secondary treated water through the binary composite catalyst to finish the tar removal work of the secondary treated water, thereby obtaining tertiary treated water.
S7, disinfection detection: ozone is generated by the ozone generator, the generated ozone is introduced into the tertiary treatment water, the tertiary treatment water is disinfected by the ozone, clean and impurity-free water is obtained, the obtained water is detected by the detection equipment, and the tar removal effect in the organic wastewater is confirmed.
75g of demulsifier, 75g of coagulant, 9g of semiconductor and 0.09g of graphene which are prepared in the step of catching the raw materials and are used for removing tar.
The containers used in the raw material preparation step and the photocatalyst preparation step are all open glass bottles, and operators can conveniently observe the condition of the treated organic wastewater in the subsequent steps.
The model of the stirring equipment used in the oil-water layering treatment equipment and the organic wastewater purification treatment step is JJ-1.
The coagulant used in the step of purifying the organic wastewater is made of aluminum salt, ferric salt, polyaluminium and the like.
The semiconductor material in the photocatalyst preparation step is titanium dioxide, tungsten trioxide, niobium pentoxide and the like.
And in the photocatalyst preparation step, the ultrasonic equipment is an ultrasonic generator.
The model of the ozone generator in the disinfection detection step is FL-803S.
The method for treating the organic wastewater containing the tar has the advantages of simple operation, less investment equipment, less required materials, correspondingly low consumed energy, convenient preparation for operators, better tar removal effect on the organic wastewater, effective reduction of COD (chemical oxygen demand) in the organic wastewater, and more than 95% removal rate of the tar, so that the method has good popularization and good economic and social benefits.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for treating organic wastewater containing tar is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, preparing raw materials: preparing 2L of organic wastewater needing tar removal, preparing 70-100 g of demulsifier, 70-100 g of coagulant, 5-10 g of semiconductor and 0.05-0.1 g of graphene used for tar removal, and respectively storing the organic wastewater, the demulsifier, the coagulant, the semiconductor, the graphene and other materials in a container.
S2, raw material inspection: materials such as demulsifiers, coagulants, semiconductors, graphene and the like used for detecting and removing tar need to be replaced if the materials have quality which does not reach the standard or have no use effect.
S3, oil-water layering treatment: putting organic wastewater into a reaction tank, adding a prepared demulsifier into the organic wastewater, stirring by using stirring equipment, standing the mixed organic wastewater for 2-6 h, reacting the demulsifier with tar, and layering the tar and water to obtain primary treated water.
S4, organic wastewater purification treatment: and (3) putting the prepared coagulant into the primary treated water subjected to oil-water layering treatment, standing for 2-6 h, and finishing the purification treatment of the primary treated water to obtain secondary treated water.
S5, photocatalyst preparation: the semiconductor and the graphene are mixed and loaded in a container, a proper amount of solvent is added, the container is placed in ultrasonic equipment, the ultrasonic equipment is started for 10-20 hours, then filtration is carried out, and the semiconductor and the graphene can be self-assembled together through the acting force of static electricity to form the binary composite catalyst.
S6, degradation treatment: adding the prepared binary composite catalyst into secondary treated water obtained by purifying organic wastewater, and carrying out photocatalytic degradation reaction on the secondary treated water through the binary composite catalyst to finish the tar removal work of the secondary treated water, thereby obtaining tertiary treated water.
S7, disinfection detection: ozone is generated by the ozone generator, the generated ozone is introduced into the tertiary treatment water, the tertiary treatment water is disinfected by the ozone, clean and impurity-free water is obtained, the obtained water is detected by the detection equipment, and the tar removal effect in the organic wastewater is confirmed.
2. The method for treating tar-containing organic wastewater according to claim 1, wherein: 75g of demulsifier, 75g of coagulant, 8g of semiconductor and 0.08g of graphene which are prepared in the step of catching the raw materials and are used for removing tar.
3. The method for treating tar-containing organic wastewater according to claim 1, wherein: the containers used in the raw material preparation step and the photocatalyst preparation step are all open glass bottles.
4. The method for treating tar-containing organic wastewater according to claim 1, wherein: the model of the stirring equipment used in the oil-water layering treatment equipment and the organic wastewater purification treatment step is JJ-1.
5. The method for treating tar-containing organic wastewater according to claim 1, wherein: the coagulant used in the step of purifying the organic wastewater is made of aluminum salt, ferric salt, polyaluminium and the like.
6. The method for treating tar-containing organic wastewater according to claim 1, wherein: the semiconductor material in the photocatalyst preparation step is titanium dioxide, tungsten trioxide, niobium pentoxide and the like.
7. The method for treating tar-containing organic wastewater according to claim 1, wherein: the ultrasonic equipment in the photocatalyst preparation step is an ultrasonic generator.
8. The method for treating tar-containing organic wastewater according to claim 1, wherein: the model of the ozone generator in the disinfection detection step is FL-803S.
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| CN103663811A (en) * | 2013-07-17 | 2014-03-26 | 新疆天业（集团）有限公司 | Treatment method of tar-containing wastewater for tail gas purification of calcium carbide furnace |
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