CN211035509U - A processing system for polluting organic sewage of place restoration process - Google Patents
A processing system for polluting organic sewage of place restoration process Download PDFInfo
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- CN211035509U CN211035509U CN201921905963.0U CN201921905963U CN211035509U CN 211035509 U CN211035509 U CN 211035509U CN 201921905963 U CN201921905963 U CN 201921905963U CN 211035509 U CN211035509 U CN 211035509U
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Abstract
The utility model provides a processing system for contaminated site restoration process organic sewage, including breakdown of emulsion oil interceptor, equalizing basin, senior oxidation tank, coagulating sedimentation tank and activated carbon tank, the breakdown of emulsion oil interceptor is the pretreatment unit, if contain TPH or NAP L looks pollutant in the organic sewage, organic sewage gets into the breakdown of emulsion oil interceptor and carries out the preliminary treatment, the equalizing basin is located the low reaches of breakdown of emulsion oil interceptor, if do not contain TPH or NAP L looks pollutant in the organic sewage, directly get into the equalizing basin and handle, senior oxidation tank is located the low reaches of equalizing basin, use the difficult degradation organic matter of advanced oxidation method pertinence processing organic sewage, the coagulating sedimentation tank is located the low reaches of senior oxidation tank, have coagulating area and settling area, the activated carbon tank is located the low reaches of coagulating sedimentation tank, be used for the play water of advanced treatment coagulating sedimentation tank, make its discharge or retrieval and utilization up to standard, the sludge concentration tank is used for collecting dross and mud, carry outward after the concentration and handle or utilize the resourceization.
Description
Technical Field
The utility model belongs to the technical field of pollute the place restoration, a processing system of organic sewage is related to, in particular to a processing system for polluting organic sewage of place restoration process.
Background
By "contaminated site" is meant an area of space that is hazardous or potentially risky to human health and the environment due to the accumulation, storage, handling, disposal, or other loading of hazardous materials. The carriers of the harmful substances comprise field soil, field underground water, field surface water and field residual waste pollutants such as production equipment, buildings and the like. When the functions of the land of the polluted site are transformed and secondarily developed and reused, restoration is urgently needed to ensure the safety of human living environment and ecological environment, and restoration of the organic polluted site gradually becomes a hotspot for ecological environment management in China.
At present, the commonly used restoration process in the restoration process of the organic pollution site comprises an in-situ/ex-situ thermal desorption process, a multiphase extraction process, a leaching process, a chemical oxidation process and the like, wherein the restoration processes are generally provided with an extraction unit, a gas-water separation unit, a tail gas purification unit and a condensation unit, and a large amount of organic sewage is generated in the restoration process of the pollution site.
In recent years, some domestic sewage treatment methods in the remediation process of organic polluted sites are reported, but all the methods have obvious defects.
The literature, namely indirect thermal desorption repair technology for soil polluted by shallow talk of petroleum hydrocarbon, adopts an indirect thermal desorption device to repair the soil polluted by the petroleum hydrocarbon, and the COD concentration of sewage generated in the repair process can reach 1 × 104mg/L, the adopted sewage treatment process comprises the steps of feeding demulsifier into oily sewage discharged by an oil-water separation device, then feeding the oily sewage into a sewage adjusting tank, treating the effluent of the adjusting tank by a secondary air floatation device, adding coagulant into air floatation scum, then treating the air floatation scum by a solid-liquid separation device, and recycling the secondary air floatation effluent for discharging and spraying by an indirect thermal desorption device.
The invention patent with publication number CN109437435A discloses a thermal desorption sewage treatment system and method for organic contaminated soil, which comprises a sewage adjusting tank, a coagulating sedimentation tank, a Fenton sedimentation tank, a deep oxidation tower, a filtering device, a clear water tank, a sludge tank and a stacked spiral sludge dehydrator, wherein the method is developed for organic sewage generated by thermal desorption remediation of contaminated soil, and has the advantages of simple structure, low cost, capability of treating various organic matters without secondary pollution.
The utility model discloses a utility model patent CN207418444U waste water treatment facilities for contaminated site normal position restoration engineering, the waste water treatment facilities who is used for handling the waste water that produces of the concentrated combustion formula thermal desorption restoration of contaminated site normal position restoration engineering, solve the complicated difficult problem of handling of waste water nature etc. the process flow of this patent adopts gravity oil removal sedimentation equalizing basin, thoughtlessly congeals, deposits-air supporting-chemical oxidation combination pond, sand filtration, charcoal filtration, play pond etc. the shortcoming of this waste water treatment facilities includes 1. thermal desorption waste water directly gets into gravity oil removal sedimentation equalizing basin, can get rid of TPH or NAP L looks in the waste water, but does not contain the pollutant that needs the oil removal in the waste water, does not need directly to get into this unit 2. the back flush unit easily blows off the VOCs in the waste water, probably causes secondary pollution 3. adopt the quartz sand filter, but does not set up the filtering pond system, can cause the jam after long-term operation, reduces treatment efficiency 4. scum or mud that units such as sedimentation basin, air float pond, chemical oxidation pond, design and discharge unit.
In summary, most of the treatment devices or systems for generating sewage in the field repair process reported at present aim at the sewage generated by a single field repair process, such as in-situ/ex-situ thermal desorption process sewage, and have narrow application range, and the prior art has defects.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, an object of the utility model is to provide a processing system for polluting organic sewage of place restoration process can handle the organic sewage that multiple place restoration technique produced, and various difficult degradation have a poison organic pollutant in the sewage are got rid of to the high efficiency, and process flow is simple, and low cost does not have secondary pollution.
In order to achieve the above object, the utility model adopts the following technical scheme:
a treatment system for organic sewage in a polluted site repairing process is characterized by comprising a demulsification oil separation tank, an adjusting tank, an advanced oxidation tank, a coagulating sedimentation tank and an activated carbon tank; wherein:
the demulsification oil separation tank is a pretreatment unit, and if the organic sewage contains TPH or NAP L phase pollutants, the organic sewage enters the demulsification oil separation tank for pretreatment;
the adjusting tank is positioned at the downstream of the demulsification oil separation tank, and if the organic sewage does not contain TPH or NAP L phase pollutants, the organic sewage directly enters the adjusting tank for treatment;
the advanced oxidation tank is positioned at the downstream of the regulating reservoir, and is used for pertinently treating refractory organic matters in the organic sewage by using an advanced oxidation method;
the coagulation sedimentation tank is positioned at the downstream of the advanced oxidation tank and is provided with a coagulation area and a sedimentation area;
the activated carbon tank is positioned at the downstream of the coagulating sedimentation tank and is used for deeply treating the effluent of the coagulating sedimentation tank so as to ensure that the effluent meets the discharge standard or can be recycled.
The system for treating the organic sewage in the remediation process of the polluted site is characterized in that the demulsification oil separation tank is provided with a demulsifier adding device which is used for adding a demulsifier corresponding to TPH or NAP L phase organic sewage into the demulsification oil separation tank.
The treatment system for organic sewage in the polluted site restoration process is characterized in that: the adjusting tank is connected with a pH adjusting device.
The treatment system for organic sewage in the polluted site restoration process is characterized in that: the pH adjusting device is divided into an alkali liquor storage tank and an acid liquor storage tank.
The treatment system for organic sewage in the polluted site restoration process is characterized in that: the adjusting tank is connected with a water quantity adjusting device.
The treatment system for organic sewage in the polluted site restoration process is characterized in that: the advanced oxidation tank is connected with an oxidizing reagent feeding device and is used for feeding a Fenton reagent, a potassium permanganate reagent or a sodium persulfate reagent.
The treatment system for organic sewage in the polluted site restoration process is characterized in that: the coagulating area of the coagulating sedimentation tank is connected with a coagulant adding device and a flocculating agent adding device.
The treatment system for organic sewage in the polluted site restoration process is characterized in that: the coagulation area of the coagulation sedimentation tank is connected with a heavy metal catching agent feeding device.
The treatment system for organic sewage in the polluted site restoration process is characterized in that: the sedimentation zone of the coagulating sedimentation tank is in the form of inclined plate sedimentation or inclined tube sedimentation, and the inclination angle of the inclined plate or the inclined tube is 50-70 degrees.
The treatment system for organic sewage in the polluted site restoration process is characterized in that: the device also comprises a sludge concentration tank which is used for collecting scum generated by the demulsification oil separation tank and sludge generated by the advanced oxidation tank and the coagulating sedimentation tank.
The utility model has the advantages of wide application range, strong processing capacity, simple process flow and no secondary pollution:
(1) the utility model discloses can be used to handle the organic sewage that multiple organic pollution place normal position/dystopy restoration technology produced, pollute the place restoration technology and include normal position/dystopy thermal desorption technology, heterogeneous extraction technology, normal position chemistry drip washing technology, normal position chemical oxidation technology etc..
(2) The utility model can be used for treating the refractory toxic organic sewage with different water qualities. The characteristic pollutants of the organic sewage comprise organic chlorine pesticides, benzene series, polycyclic aromatic hydrocarbons, petroleum hydrocarbons, non-aqueous phase fluid and the like.
Drawings
Fig. 1 is a block diagram of the present invention.
Detailed Description
Some specific embodiments of the invention will be described in detail below, by way of example and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.
As shown in figure 1, the utility model provides a processing system for polluting organic sewage of place restoration process includes: a demulsification oil separation tank, an adjusting tank, an advanced oxidation tank, a coagulating sedimentation tank and an activated carbon tank; the composition structure and the working flow are as follows:
the demulsification oil separation tank is a pretreatment unit, and if the organic sewage contains petroleum hydrocarbon (TPH) or non-aqueous phase fluid (NAP L phase) pollutants, the sewage enters the demulsification oil separation tank for pretreatment;
the device comprises a demulsification oil separation tank, an adjusting tank, a pH adjusting device and a water quantity adjusting device (not shown in the figure), wherein the adjusting tank is positioned at the downstream of the demulsification oil separation tank and is communicated with organic sewage which does not enter the demulsification oil separation tank through an overrun pipe, and if the organic sewage does not contain TPH or NAP L phase, the organic sewage directly enters the adjusting tank through the overrun pipe to be treated;
the advanced oxidation tank is positioned at the downstream of the regulating tank and is connected with an oxidizing agent adding device, and according to the difference of characteristic pollutants in the sewage, corresponding oxidizing agents with high treatment efficiency, including a Fenton agent, a potassium permanganate agent, a sodium persulfate agent and the like, are added;
the coagulation sedimentation tank is positioned at the downstream of the advanced oxidation tank and is provided with a coagulation area and a sedimentation area, the coagulation area is connected with a coagulant adding device and a flocculant adding device, and the coagulation area is also connected with a heavy metal catching agent adding device, so that suspended matters and heavy metals in the organic sewage can be removed; the sedimentation zone is in the form of inclined plate sedimentation or inclined tube sedimentation, and the inclination angle of the inclined plate or the inclined tube is 50-70 degrees;
the activated carbon tank is positioned at the downstream of the coagulating sedimentation tank, and the effluent of the coagulating sedimentation tank is subjected to advanced treatment by the activated carbon tank and then is discharged up to the standard or reused for a polluted site remediation project.
And collecting the scum produced by the demulsification oil separation tank and the sludge produced by the advanced oxidation tank and the coagulating sedimentation tank to a sludge concentration tank, and carrying out outward treatment or resource utilization after concentration.
According to the different site pollution conditions, organic pollutants in the sewage comprise organic chlorine pesticides, benzene series compounds, Polycyclic Aromatic Hydrocarbons (PAHs), petroleum hydrocarbons (TPH), non-aqueous phase fluids (NAP L phases) and the like.
From this, can understand the utility model has the advantages of application scope is wide, throughput is strong, process flow is simple, no secondary pollution:
(1) the utility model discloses can be used to handle the organic sewage that multiple organic pollution place normal position/dystopy restoration technology produced, pollute the place restoration technology and include normal position/dystopy thermal desorption technology, heterogeneous extraction technology, normal position chemistry drip washing technology, normal position chemical oxidation technology etc..
(2) The utility model can be used for treating the refractory toxic organic sewage with different water qualities. The characteristic pollutants of the organic sewage comprise organic chlorine pesticides, benzene series, polycyclic aromatic hydrocarbons, petroleum hydrocarbons, non-aqueous phase fluid and the like.
In a word, the utility model discloses can be used to the treatment of multiple pollution place restoration technology sewage, can effectively get rid of the difficult degradation of different grade type has poisonous organic pollutant, and application scope is wide, and the throughput is strong, and process flow is simple, does not have secondary pollution.
Claims (10)
1. A treatment system for organic sewage in a polluted site repairing process is characterized by comprising a demulsification oil separation tank, an adjusting tank, an advanced oxidation tank, a coagulating sedimentation tank and an activated carbon tank; wherein:
the demulsification oil separation tank is a pretreatment unit, and if the organic sewage contains TPH or NAP L phase pollutants, the organic sewage enters the demulsification oil separation tank for pretreatment;
the adjusting tank is positioned at the downstream of the demulsification oil separation tank, and if the organic sewage does not contain TPH or NAP L phase pollutants, the organic sewage directly enters the adjusting tank for treatment;
the advanced oxidation tank is positioned at the downstream of the regulating reservoir, and is used for pertinently treating refractory organic matters in the organic sewage by using an advanced oxidation method;
the coagulation sedimentation tank is positioned at the downstream of the advanced oxidation tank and is provided with a coagulation area and a sedimentation area;
the activated carbon tank is positioned at the downstream of the coagulating sedimentation tank and is used for deeply treating the effluent of the coagulating sedimentation tank so as to ensure that the effluent meets the discharge standard or can be recycled.
2. The system for treating the organic sewage in the polluted site restoration process according to claim 1, wherein the demulsification oil separation tank is provided with a demulsifier adding device for adding a demulsifier corresponding to the TPH or NAP L phase organic sewage into the demulsification oil separation tank.
3. The system for treating organic sewage in a contaminated site remediation process of claim 1, wherein: the adjusting tank is connected with a pH adjusting device.
4. The system for treating organic sewage in a contaminated site remediation process of claim 3, wherein: the pH adjusting device is divided into an alkali liquor storage tank and an acid liquor storage tank.
5. The system for treating organic sewage in a contaminated site remediation process of claim 1, wherein: the adjusting tank is connected with a water quantity adjusting device.
6. The system for treating organic sewage in a contaminated site remediation process of claim 1, wherein: the advanced oxidation tank is connected with an oxidizing reagent feeding device and is used for feeding a Fenton reagent, a potassium permanganate reagent or a sodium persulfate reagent.
7. The system for treating organic sewage in a contaminated site remediation process of claim 1, wherein: the coagulating area of the coagulating sedimentation tank is connected with a coagulant adding device and a flocculating agent adding device.
8. The system for treating organic sewage in a contaminated site remediation process of claim 1, wherein: the coagulation area of the coagulation sedimentation tank is connected with a heavy metal catching agent feeding device.
9. The system for treating organic sewage in a contaminated site remediation process of claim 1, wherein: the sedimentation zone of the coagulating sedimentation tank is in the form of inclined plate sedimentation or inclined tube sedimentation, and the inclination angle of the inclined plate or the inclined tube is 50-70 degrees.
10. The system for treating organic sewage in a contaminated site remediation process of claim 1, wherein: the device also comprises a sludge concentration tank which is used for collecting scum generated by the demulsification oil separation tank and sludge generated by the advanced oxidation tank and the coagulating sedimentation tank.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110668608A (en) * | 2019-11-06 | 2020-01-10 | 中科鼎实环境工程有限公司 | A processing system for polluting organic sewage of place restoration process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110668608A (en) * | 2019-11-06 | 2020-01-10 | 中科鼎实环境工程有限公司 | A processing system for polluting organic sewage of place restoration process |
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