CN112794561A - Dangerous waste liquid upgrading advanced treatment method - Google Patents
Dangerous waste liquid upgrading advanced treatment method Download PDFInfo
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- CN112794561A CN112794561A CN202011567151.7A CN202011567151A CN112794561A CN 112794561 A CN112794561 A CN 112794561A CN 202011567151 A CN202011567151 A CN 202011567151A CN 112794561 A CN112794561 A CN 112794561A
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- advanced oxidation
- air floatation
- control cabinet
- waste liquid
- pond
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
-
- 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
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to the technical field of deep treatment in hazardous waste industry, in particular to a method for upgrading and deeply treating hazardous waste liquid, which comprises the following specific steps: s1, firstly, leading the front-end MBR effluent to enter an advanced oxidation pond; s2, adding sodium hypochlorite and ferrous iron reagents into the advanced oxidation tank to further degrade COD, wherein the advanced oxidation retention time is 3h, and the advanced treatment is designed for wastewater subjected to front-end treatment to reduce the overall COD concentration; the process flow is simple, and the automatic operation of a wastewater treatment facility is easy to realize; the method has the advantages of simple and convenient operation and management, and the medicament is added by the control methods of a PH controller, a PLC and the like, so that the operation cost is reduced, the advanced oxidation and air flotation process is used, and the standard-lifting discharge of the wastewater is realized.
Description
Technical Field
The invention relates to the technical field of deep treatment in hazardous waste industry, in particular to a method for upgrading and deeply treating hazardous waste liquid.
Background
With the development of the industry in China, the discharge amount of sewage in various industries is continuously increased, the water pollution phenomenon is more and more serious, particularly, the discharge amount of industrial wastewater is large, the water quality components are complex, so the treatment difficulty is large, the environment is seriously polluted, and meanwhile, the human health is directly threatened. In the hazardous waste liquid and wastewater after the secondary treatment, indexes of some pollutants are still high, and the pollutants need to be further treated. The practicability of the advanced oxidation method for treating the wastewater is proved by the research results of the predecessors, and the advanced oxidation method has a very wide application prospect in the field of water treatment. The combination of the advanced oxidation technology and other technologies applied to the reclaimed water recycling technology becomes a hotspot of research of people at present, and the finding of an effective wastewater treatment method is important for reducing the pollution of hazardous waste liquid to the environment to the maximum extent, saving national resources and realizing sustainable development.
In conclusion, the invention solves the existing problems by designing a dangerous waste liquid standard-extracting advanced treatment method.
Disclosure of Invention
The invention aims to provide a method for carrying out standard extraction and advanced treatment on hazardous waste liquid, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for upgrading and deeply treating hazardous waste liquid comprises the following specific steps:
s1, firstly, leading the front-end MBR effluent to enter an advanced oxidation pond;
s2, adding sodium hypochlorite and ferrous iron reagents into the advanced oxidation tank to further degrade COD, wherein the advanced oxidation retention time is 3 hours;
and S3, finally, enabling the advanced oxidation effluent to automatically flow into an air floatation tank, adding alkali into the air floatation tank to adjust the pH value, then adding polyaluminum chloride (PAC) and Polyacrylamide (PAM), and performing mud-water separation to achieve the discharge standard.
Preferably, the front-end MBR in S1 is connected to the advanced oxidation pond through a pipeline, an electromagnetic valve is mounted on the pipeline and is electrically connected to the PLC control cabinet through a lead.
Preferably, the sewage agitator is installed respectively in the middle of the pond mouth in advanced oxidation pond, air supporting pond, the sewage agitator passes through wire electric connection on the PLC switch board, install the PH controller in the air supporting pond and pass through wire electric connection on the PLC switch board.
Preferably, the advanced oxidation pond is connected to the air floatation pond through a pipeline, an electromagnetic valve is installed on the pipeline and is electrically connected to the PLC control cabinet through a wire.
Preferably, in S2, sodium hypochlorite and ferrous iron reagents are added into an advanced oxidation tank to further degrade COD, and the advanced oxidation retention time is 3 hours, and the specific steps are as follows: 0.030-0.045% of sodium hypochlorite solution with the mass fraction of 30% and 0.010-0.015% of ferrous reagent are added into the advanced oxidation pond, and a sewage stirrer on the advanced oxidation pond is controlled to stir through a PLC control cabinet, so that COD is further degraded, and the advanced oxidation retention time is 3 hours.
Preferably, the high-grade oxidized effluent in the step S3 automatically flows into an air flotation tank, alkali is added into the air flotation tank to adjust the pH, polyaluminium chloride (PAC) and Polyacrylamide (PAM) are then added, and the specific steps of standard discharge after mud-water separation are as follows: the advanced oxidation effluent automatically flows into an air floatation tank, 0.01-0.03% of sodium hydroxide with the mass fraction of 30% is added into the air floatation tank to adjust the pH value, the pH value is detected by a pH controller and is transmitted to a PLC control cabinet, then 0.020-0.030% of polyaluminium chloride (PAC) and 0.02-0.050% of Polyacrylamide (PAM) are added, a sewage stirrer on the air floatation tank is controlled by the PLC control cabinet to stir, and the mud and water are discharged after reaching the standard after being separated.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the overall COD concentration is reduced by carrying out advanced treatment on the wastewater after front-end treatment; the process flow is simple, and the automatic operation of a wastewater treatment facility is easy to realize; the method has the advantages of simple and convenient operation and management, and the medicament is added by the control methods of a PH controller, a PLC and the like, so that the operation cost is reduced, the advanced oxidation and air flotation process is used, and the standard-lifting discharge of the wastewater is realized.
Drawings
FIG. 1 is a schematic structural view of a process flow diagram of 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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
a method for upgrading and deeply treating hazardous waste liquid comprises the following specific steps:
s1, firstly, leading the front-end MBR effluent to enter an advanced oxidation pond;
s2, adding sodium hypochlorite and ferrous iron reagents into the advanced oxidation tank to further degrade COD, wherein the advanced oxidation retention time is 3 hours;
and S3, finally, enabling the advanced oxidation effluent to automatically flow into an air floatation tank, adding alkali into the air floatation tank to adjust the pH value, then adding polyaluminum chloride (PAC) and Polyacrylamide (PAM), and performing mud-water separation to achieve the discharge standard.
Further, the front-end MBR in the S1 is connected to the advanced oxidation pond through a pipeline, an electromagnetic valve is mounted on the pipeline, and the electromagnetic valve is electrically connected to the PLC control cabinet through a lead.
Further, the middle of the mouth of the advanced oxidation tank and the air floatation tank is provided with a sewage stirrer, the sewage stirrer is electrically connected to the PLC control cabinet through a wire, and the air floatation tank is internally provided with a PH controller which is electrically connected to the PLC control cabinet through a wire.
Further, advanced oxidation pond passes through the pipe connection on the air supporting pond, install the solenoid valve on the pipeline and solenoid valve passes through wire electric connection on the PLC switch board.
Further, sodium hypochlorite and ferrous iron reagents are added into the advanced oxidation tank in the step S2 to further degrade COD, and the advanced oxidation retention time is 3 hours, and the specific steps are as follows: 0.030-0.045% of sodium hypochlorite solution with the mass fraction of 30% and 0.010-0.015% of ferrous reagent are added into the advanced oxidation pond, and a sewage stirrer on the advanced oxidation pond is controlled to stir through a PLC control cabinet, so that COD is further degraded, and the advanced oxidation retention time is 3 hours.
Further, the high-grade oxidized effluent water in the step S3 automatically flows into an air flotation tank, alkali is added into the air flotation tank to adjust the pH value, then polyaluminium chloride (PAC) and Polyacrylamide (PAM) are added, and the concrete steps of standard discharge after mud-water separation are as follows: the advanced oxidation effluent automatically flows into an air floatation tank, 0.01-0.03% of sodium hydroxide with the mass fraction of 30% is added into the air floatation tank to adjust the pH value, the pH value is detected by a pH controller and is transmitted to a PLC control cabinet, then 0.020-0.030% of polyaluminium chloride (PAC) and 0.02-0.050% of Polyacrylamide (PAM) are added, a sewage stirrer on the air floatation tank is controlled by the PLC control cabinet to stir, and the mud and water are discharged after reaching the standard after being separated.
The specific implementation case is as follows:
embodiment 1:
step 1, firstly, leading front-end MBR effluent to enter an advanced oxidation pond;
step 2, secondly, adding 0.030 mass percent of sodium hypochlorite solution with the mass fraction of 30 percent and 0.010 to 0.015 mass percent of ferrous reagent into the advanced oxidation tank, and controlling a sewage stirrer on the advanced oxidation tank to stir through a PLC control cabinet to further degrade COD, wherein the advanced oxidation retention time is 3 hours;
and 3, finally, enabling the advanced oxidation effluent to automatically flow into an air floatation tank, adding 0.01% of sodium hydroxide with the mass fraction of 30% into the air floatation tank to adjust the pH value back, detecting the pH value through a pH controller, transmitting the value to a PLC (programmable logic controller) control cabinet, then adding 0.020% of polyaluminum chloride (PAC) and 0.02% of Polyacrylamide (PAM), controlling the stirring of a sewage stirrer on the air floatation tank through the PLC control cabinet, and discharging the sludge-water after reaching the standard.
Embodiment 2:
step 1, firstly, leading front-end MBR effluent to enter an advanced oxidation pond;
step 2, secondly, adding 0.035% of sodium hypochlorite solution with the mass fraction of 30% and 0.012% of ferrous reagent into the advanced oxidation tank, and controlling a sewage stirrer on the advanced oxidation tank to stir through a PLC control cabinet, so as to further degrade COD, wherein the advanced oxidation retention time is 3 hours;
and 3, finally, enabling the advanced oxidation effluent to automatically flow into an air floatation tank, adding 0.02% of sodium hydroxide with the mass fraction of 30% into the air floatation tank to adjust the pH value back, detecting the pH value through a pH controller, transmitting the value to a PLC (programmable logic controller) control cabinet, adding 0.026% of polyaluminum chloride (PAC) and 0.003% of Polyacrylamide (PAM), controlling a sewage stirrer on the air floatation tank to stir through the PLC control cabinet, and discharging the sludge-water after reaching the standard.
Embodiment 3:
step 1, firstly, leading front-end MBR effluent to enter an advanced oxidation pond;
step 2, secondly, adding 0.045% of sodium hypochlorite solution with the mass fraction of 30% and 0.015% of ferrous reagent into the advanced oxidation tank, controlling a sewage stirrer on the advanced oxidation tank to stir through a PLC control cabinet, and further degrading COD (chemical oxygen demand) with the advanced oxidation retention time of 3 h;
and 3, finally, allowing the advanced oxidation effluent to automatically flow into an air floatation tank, adding 0.03% of sodium hydroxide with the mass fraction of 30% into the air floatation tank to adjust the pH value back, detecting the pH value through a pH controller, transmitting the numerical value to a PLC (programmable logic controller) control cabinet, adding 0.030% of polyaluminum chloride (PAC) and 0.050% of Polyacrylamide (PAM), controlling the stirring of a sewage stirrer on the air floatation tank through the PLC control cabinet, and discharging the sludge-water after the sludge-water separation and reaching the standard.
The following table shows the removal effect of the present invention.
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 (6)
1. A method for upgrading and deeply treating hazardous waste liquid comprises the following specific steps:
s1, firstly, leading the front-end MBR effluent to enter an advanced oxidation pond;
s2, adding sodium hypochlorite and ferrous iron reagents into the advanced oxidation tank to further degrade COD, wherein the advanced oxidation retention time is 3 hours;
and S3, finally, enabling the advanced oxidation effluent to automatically flow into an air floatation tank, adding alkali into the air floatation tank to adjust the pH value, then adding polyaluminum chloride (PAC) and Polyacrylamide (PAM), and performing mud-water separation to achieve the discharge standard.
2. The method for upgrading and deeply treating the hazardous waste liquid according to claim 1, which is characterized by comprising the following steps of: and the front-end MBR in the S1 is connected to the advanced oxidation pond through a pipeline, an electromagnetic valve is installed on the pipeline, and the electromagnetic valve is electrically connected to the PLC control cabinet through a lead.
3. The method for upgrading and deeply treating the hazardous waste liquid according to claim 1, which is characterized by comprising the following steps of: the sewage agitator is installed in the middle of the mouth of the advanced oxidation pond and the air floatation pond respectively, the sewage agitator is electrically connected to the PLC control cabinet through a wire, and the PH controller is installed in the air floatation pond and is electrically connected to the PLC control cabinet through a wire.
4. The method for upgrading and deeply treating the hazardous waste liquid according to claim 1, which is characterized by comprising the following steps of: the advanced oxidation pond is connected to the air floatation pond through a pipeline, an electromagnetic valve is installed on the pipeline and is electrically connected to the PLC control cabinet through a wire.
5. The method for upgrading and deeply treating the hazardous waste liquid according to any one of claims 1 to 4, characterized by comprising the following steps: in the S2, the COD is further degraded by adding sodium hypochlorite and ferrous iron reagents into an advanced oxidation tank, and the specific steps of the advanced oxidation retention time being 3 hours are as follows: 0.030-0.045% of sodium hypochlorite solution with the mass fraction of 30% and 0.010-0.015% of ferrous reagent are added into the advanced oxidation pond, and a sewage stirrer on the advanced oxidation pond is controlled to stir through a PLC control cabinet, so that COD is further degraded, and the advanced oxidation retention time is 3 hours.
6. The method for upgrading and deeply treating the hazardous waste liquid according to any one of claims 1 to 4, characterized by comprising the following steps: and the high-grade oxidized effluent in the S3 automatically flows into an air floatation tank, alkali is added into the air floatation tank to adjust the pH value, then polyaluminium chloride (PAC) and Polyacrylamide (PAM) are added, and the concrete steps of standard discharge after mud-water separation are as follows: the advanced oxidation effluent automatically flows into an air floatation tank, 0.01-0.03% of sodium hydroxide with the mass fraction of 30% is added into the air floatation tank to adjust the pH value, the pH value is detected by a pH controller and is transmitted to a PLC control cabinet, then 0.020-0.030% of polyaluminium chloride (PAC) and 0.02-0.050% of Polyacrylamide (PAM) are added, a sewage stirrer on the air floatation tank is controlled by the PLC control cabinet to stir, and the mud and water are discharged after reaching the standard after being separated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011567151.7A CN112794561A (en) | 2020-12-25 | 2020-12-25 | Dangerous waste liquid upgrading advanced treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011567151.7A CN112794561A (en) | 2020-12-25 | 2020-12-25 | Dangerous waste liquid upgrading advanced treatment method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120292259A1 (en) * | 2011-05-17 | 2012-11-22 | High Sierra Energy, LP | System and method for treatment of produced waters containing gel |
| CN103723878A (en) * | 2012-10-12 | 2014-04-16 | 中国石油化工股份有限公司 | Method for deep treatment on industrial wastewater discharged by styrene-butadiene rubber production device |
| CN103951101A (en) * | 2014-04-10 | 2014-07-30 | 洛阳理工学院 | Treatment method and treatment system for nitrochlorobenzene production waste water |
| CN105036433A (en) * | 2015-08-13 | 2015-11-11 | 杭州同润环保工程有限公司 | Process method of catalytic oxidation treatment on bio-chemical effluent COD |
| CN106745961A (en) * | 2016-11-25 | 2017-05-31 | 中冶赛迪工程技术股份有限公司 | A kind of method and system of coking wastewater deep treatment decarburization decolouring decyanation |
-
2020
- 2020-12-25 CN CN202011567151.7A patent/CN112794561A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120292259A1 (en) * | 2011-05-17 | 2012-11-22 | High Sierra Energy, LP | System and method for treatment of produced waters containing gel |
| CN103723878A (en) * | 2012-10-12 | 2014-04-16 | 中国石油化工股份有限公司 | Method for deep treatment on industrial wastewater discharged by styrene-butadiene rubber production device |
| CN103951101A (en) * | 2014-04-10 | 2014-07-30 | 洛阳理工学院 | Treatment method and treatment system for nitrochlorobenzene production waste water |
| CN105036433A (en) * | 2015-08-13 | 2015-11-11 | 杭州同润环保工程有限公司 | Process method of catalytic oxidation treatment on bio-chemical effluent COD |
| CN106745961A (en) * | 2016-11-25 | 2017-05-31 | 中冶赛迪工程技术股份有限公司 | A kind of method and system of coking wastewater deep treatment decarburization decolouring decyanation |
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Application publication date: 20210514 |