CN212833304U - Biochemical treatment system of high COD waste water of high salt - Google Patents
Biochemical treatment system of high COD waste water of high salt Download PDFInfo
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- CN212833304U CN212833304U CN202021198576.0U CN202021198576U CN212833304U CN 212833304 U CN212833304 U CN 212833304U CN 202021198576 U CN202021198576 U CN 202021198576U CN 212833304 U CN212833304 U CN 212833304U
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Abstract
The utility model relates to a high COD waste water's of high salt processing technology field, and discloses a biochemical treatment system of high COD waste water of high salt, including waste water equalizing basin, waste water elevator pump, reaction tank, just sink pond, first sludge discharge port, one-level aeration biological oxidation pond, one-level air inlet, second grade aeration biological oxidation pond, second grade air inlet, two sink ponds, second sludge discharge port and delivery port. The utility model discloses this technique operation is reliable and stable, also can resume the sludge activity fast through adding the microbial inoculum. The halotolerant bacteria has strong impact load resistance, is not easy to expand sludge, and has higher effluent quality.
Description
Technical Field
The utility model relates to a high COD waste water's of high salt processing technology field specifically is a biochemical treatment system of high COD waste water of high salt.
Background
The microbial degradation of organic matters in wastewater is the most economical sewage treatment method which is generally accepted at present, but in high-salinity wastewater (generally, the salt content is more than 20000mg/L), the salt in the wastewater can inhibit the growth of microorganisms and even can cause the death of the microorganisms. The biochemical treatment of high-salt and high-COD waste water is always an industrial problem. Advanced oxidation is the main technology for treating high-salinity wastewater at present, the equipment investment and the operating cost are very high, common enterprises are difficult to bear, and an economical and efficient technology for treating high-salinity high-COD wastewater is lacked at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a biochemical treatment system of high COD waste water of high salt, not only reliable and stable to prior art not enough, greatly reduced running cost has solved the problem of proposing among the above-mentioned background art moreover.
The utility model provides a following technical scheme: a biochemical treatment system for high-salt high-COD wastewater comprises a wastewater adjusting tank, a wastewater lifting pump, a reaction tank, a primary sedimentation tank, a first sludge discharge port, a primary aeration biological oxidation tank, a primary air inlet, a secondary aeration biological oxidation tank, a secondary air inlet, a secondary sedimentation tank, a second sludge discharge port and a water outlet;
the wastewater adjusting tank, the wastewater lifting pump, the reaction tank and the primary sedimentation tank are sequentially connected through a pipeline, and the bottom of the primary sedimentation tank is provided with the first sludge outlet;
the liquid outlet of the primary sedimentation tank is connected with one side of the top of the primary aeration biological oxidation tank through a pipeline, one side of the lower part of the primary aeration biological oxidation tank is provided with the primary air inlet, and the bottom of the primary aeration biological oxidation tank is connected with one side of the top of the secondary aeration biological oxidation tank through a pipeline;
the secondary aeration biological oxidation pond is characterized in that the secondary air inlet is formed in one side of the lower portion of the secondary aeration biological oxidation pond, the bottom of the secondary aeration biological oxidation pond is connected to one side of the top of the secondary sedimentation pond through a pipeline, the second sludge discharge port is formed in the bottom of the secondary sedimentation pond, and the water outlet is formed in one side of the secondary sedimentation pond.
And a return pipeline is also arranged for fine selection, the water inlet of the return pipeline is connected with the second sludge discharge port, the water outlet of the return pipeline is converged with the pipeline of the liquid outlet of the primary sedimentation tank into a mixing pipeline through a pipeline, and the water outlet of the mixing pipeline is connected with one side of the top of the primary aeration biological oxidation tank.
And carefully selecting, wherein a gas spraying pipeline with a nozzle is arranged on the inner side of the lower part of the primary aeration biological oxidation tank, and the gas spraying pipeline is connected with a primary gas inlet.
And carefully selecting, wherein a gas spraying pipeline with a nozzle is arranged on the inner side of the lower part of the secondary aeration biological oxidation tank, and the gas spraying pipeline is connected with a secondary gas inlet.
And (3) carefully selecting, wherein suspended biological fillers are arranged in the primary aeration biological oxidation tank and the secondary aeration biological oxidation tank.
Compared with the prior art, the utility model discloses possess following beneficial effect:
1. the utility model discloses economy is practiced thrift, and the small investment, the working costs is also low. The advanced oxidation treatment technology needs to invest a large amount of complex equipment, such as an ozone generator, an oxidation tower, electrochemical oxidation equipment and the like, not only has huge investment and high operation and maintenance cost and energy consumption, but also sometimes needs to invest a large amount of medicaments, but also has no need to invest a large amount of complex mechanical equipment in the biological treatment technology, mainly comprising a fan, a water pump and a water tank, and the operation cost is only 30 percent of that of the AOP ozone oxidation technology.
2. The utility model discloses move safe and reliable, this technique as long as will intake water quality control and be being less than or equal to 20% fluctuation range, the operation is reliable and stable, also can resume the sludge activity fast through adding the microbial inoculum. The salt-tolerant bacteria have strong impact load resistance, are not easy to expand, and have higher effluent quality; in addition, the automation degree is high, and the operation management is convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1 a wastewater adjusting tank, 2 a wastewater lifting pump, 3 a reaction tank, 4 a primary sedimentation tank, 5 a first sludge discharge port, 6 a first-stage aeration biological oxidation tank, 7 a first-stage air inlet, 8 a second-stage aeration biological oxidation tank, 9 a second-stage air inlet, 10 a secondary sedimentation tank, 11 a second sludge discharge port and 12 a water outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, a biochemical treatment system for high-salt and high-COD wastewater comprises a wastewater adjusting tank 1, a wastewater lift pump 2, a reaction tank 3, a primary sedimentation tank 4, a first sludge discharge port 5, a primary aeration biological oxidation tank 6, a primary air inlet 7, a secondary aeration biological oxidation tank 8, a secondary air inlet 9, a secondary sedimentation tank 10, a second sludge discharge port 11 and a water outlet 12;
the wastewater adjusting tank 1, the wastewater lifting pump 2, the reaction tank 3 and the primary sedimentation tank 4 are sequentially connected through a pipeline, and the bottom of the primary sedimentation tank 4 is provided with the first sludge outlet 5;
the liquid outlet of the primary sedimentation tank 4 is connected with one side of the top of the primary aeration biological oxidation tank 6 through a pipeline, one side of the lower part of the primary aeration biological oxidation tank 6 is provided with the primary air inlet 7, and the bottom of the primary aeration biological oxidation tank 6 is connected to one side of the top of the secondary aeration biological oxidation tank 8 through a pipeline;
the secondary aeration biological oxidation pond is characterized in that the secondary air inlet 9 is formed in one side of the lower portion of the secondary aeration biological oxidation pond 8, the bottom of the secondary aeration biological oxidation pond 8 is connected to one side of the top of the secondary sedimentation pond 10 through a pipeline, the bottom of the secondary sedimentation pond 10 is provided with a second sludge outlet 11, and one side of the secondary sedimentation pond 10 is provided with a water outlet 12.
And a return pipeline is also arranged for fine selection, the water inlet of the return pipeline is connected with the second sludge discharge port 11, the water outlet of the return pipeline is converged with the pipeline of the liquid outlet of the primary sedimentation tank 4 through a pipeline to form a mixed pipeline, and the water outlet of the mixed pipeline is connected with one side of the top of the primary aeration biological oxidation tank 6.
And carefully selecting, wherein a gas spraying pipeline with a nozzle is arranged on the inner side of the lower part of the primary aeration biological oxidation pond 6, and the gas spraying pipeline is connected with a primary gas inlet 7.
And (3) carefully selecting, wherein a gas spraying pipeline with a nozzle is arranged on the inner side of the lower part of the secondary aeration biological oxidation pond 8, and the gas spraying pipeline is connected with a secondary gas inlet 9.
And (3) carefully selecting, wherein suspended biological fillers are arranged in the primary aeration biological oxidation tank 6 and the secondary aeration biological oxidation tank 8.
The working principle is as follows: when in use, the utility model is used,
the high COD waste water of high salt flows into waste water equalizing basin 1, adjusts quality of water and water yield, provides good pH environment for follow-up sediment and biochemical salt-tolerant bacterial, and waste water flows into reaction tank 3 through the booster pump 2 pressure boost and takes place flocculation reaction, flows into the sedimentation tank 4 of just sinking after that and deposits, and the sediment of formation is discharged to the sludge impoundment from mud discharge port 5, carries out sludge dewatering through the pressure filter.
The effluent of the supernatant of the pretreatment system flows into a primary aeration biological oxidation tank 6, and the wastewater passes through a filler to provide organic matters for salt-tolerant strains; meanwhile, air is introduced from the primary air inlet 7 at the bottom of the primary aeration biological oxidation tank 6, and oxygen in the air is dissolved in water to provide oxygen for the salt-tolerant strains. The treated water flows out from the bottom of the primary aeration biological oxidation tank 6 and flows into the secondary aeration biological oxidation tank 8, and the organic matters are decomposed by the salt-tolerant strains in the filler; at the same time, air is introduced into the secondary biological oxidation tank 8 at the bottom through the secondary air inlet 9. The treated water flows out from the bottom of the secondary aeration biological oxidation tank 8 and enters a secondary sedimentation tank 10, and the treated water is disinfected and then discharged after reaching the standard or subjected to other subsequent advanced treatment. The precipitated sludge is discharged through a sludge discharge port 11, a part of the precipitated sludge flows back to the biological oxidation pond, and a part of the precipitated sludge is subjected to sludge dehydration.
Preferably, the suspended biological filler is spherical suspended filler and also porous rotary spherical suspended filler, and is formed by injection molding of polypropylene materials, wherein the suspended biological filler is an inner double-layer sphere and an outer double-layer sphere, the outer part of the suspended biological filler is a hollow fishnet-shaped sphere, and the inner part of the suspended biological filler is a rotary sphere. The biological membrane carrier has the functions of a biological membrane carrier, also has the function of intercepting suspended matters, has the characteristics of strong biological adhesive force, large specific surface area, high porosity, good chemical and biological stability, durability, no harmful substances dissolved out, no secondary pollution, ultraviolet resistance, ageing resistance, strong hydrophilic performance and the like, and is easy to generate, easy to replace, resistant to acid and alkali, ageing resistant, free from water flow influence, long in service life, less in residual sludge and convenient to install in the using process. Has the advantages of full three-dimensional structure, large specific surface area, direct feeding, no need of fixation, easy film formation and no blockage in the biochemical treatment of sewage.
The first-stage aeration biological oxidation tank 6 and the second-stage aeration biological oxidation tank 8 are provided with suspended biological fillers with a filling ratio of 30% in order to increase degradation efficiency and denitrification performance, and because the density of the fillers is close to that of water, the fillers and the water are in a completely mixed state during aeration, and the environment for microbial growth is three phases of gas, liquid and solid. The collision and shearing action of the carrier in water makes air bubbles finer, and the utilization rate of oxygen is increased. In addition, each carrier has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, and aerobic bacteria grow outside, so that each carrier is a micro-reactor, nitrification reaction and denitrification reaction exist simultaneously, and the treatment effect is improved.
Example 2
The difference from the embodiment 1 is that the salt-tolerant microorganisms and halophilic microorganisms extracted from high-salt environments such as oceans, salt lakes and the like are arranged in the primary aeration biological oxidation tank 6 and the secondary aeration biological oxidation tank 8, so that high-salt high-COD wastewater can be better treated.
Furthermore, the fluctuation range of salinity in the primary aeration biological oxidation tank 6 and the secondary aeration biological oxidation tank 8 is less than or equal to 20 percent, the dissolved oxygen is controlled to be maintained at 2-3mg/L, the concentration of the activated sludge is 8000-120000mg/L, the organic load is 0.4kgCOD/kgMLSS.d, and the removal rate of the organic matters can reach more than 85 percent.
COD means chemical oxygen demand, and then indicates the required oxygen content of organic matter in one liter of sewage of potassium dichromate oxidation under strong acid condition, consequently high COD waste water is the waste water that the organic matter content in the sewage is high.
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. Simultaneously in the utility model discloses an in the drawing, fill the pattern and just do not do any other injecions for distinguishing the picture layer.
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 (5)
1. The utility model provides a biochemical treatment system of high COD waste water of high salt which characterized in that: comprises a wastewater adjusting tank (1), a wastewater lifting pump (2), a reaction tank (3), a primary sedimentation tank (4), a first sludge discharge port (5), a primary aeration biological oxidation tank (6), a primary air inlet (7), a secondary aeration biological oxidation tank (8), a secondary air inlet (9), a secondary sedimentation tank (10), a second sludge discharge port (11) and a water outlet (12);
the wastewater adjusting tank (1), the wastewater lifting pump (2), the reaction tank (3) and the primary sedimentation tank (4) are sequentially connected through a pipeline, and the bottom of the primary sedimentation tank (4) is provided with the first sludge outlet (5);
the liquid outlet of the primary sedimentation tank (4) is connected with one side of the top of the primary aeration biological oxidation tank (6) through a pipeline, one side of the lower part of the primary aeration biological oxidation tank (6) is provided with the primary air inlet (7), and the bottom of the primary aeration biological oxidation tank (6) is connected to one side of the top of the secondary aeration biological oxidation tank (8) through a pipeline;
the device is characterized in that the secondary air inlet (9) is formed in one side of the lower portion of the secondary aeration biological oxidation tank (8), the bottom of the secondary aeration biological oxidation tank (8) is connected to one side of the top of the secondary sedimentation tank (10) through a pipeline, the second sludge outlet (11) is formed in the bottom of the secondary sedimentation tank (10), and the water outlet (12) is formed in one side of the secondary sedimentation tank (10).
2. The biochemical treatment system for high-salt high-COD wastewater according to claim 1, characterized in that: the device is also provided with a return pipeline, the water inlet of the return pipeline is connected with the second sludge outlet (11), the water outlet of the return pipeline is converged with the pipeline of the liquid outlet of the primary sedimentation tank (4) into a mixing pipeline through a pipeline, and the water outlet of the mixing pipeline is connected with one side of the top of the primary aeration biological oxidation tank (6).
3. The biochemical treatment system for high-salt high-COD wastewater according to claim 1, characterized in that: and a gas spraying pipeline with a nozzle is arranged on the inner side of the lower part of the primary aeration biological oxidation tank (6), and the gas spraying pipeline is connected with a primary gas inlet (7).
4. The biochemical treatment system for high-salt high-COD wastewater according to claim 1, characterized in that: and a gas spraying pipeline with a nozzle is arranged on the inner side of the lower part of the secondary aeration biological oxidation tank (8), and the gas spraying pipeline is connected with a secondary gas inlet (9).
5. The biochemical treatment system for high-salt high-COD wastewater according to claim 1, characterized in that: suspended biological fillers are arranged in the primary aeration biological oxidation tank (6) and the secondary aeration biological oxidation tank (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021198576.0U CN212833304U (en) | 2020-06-24 | 2020-06-24 | Biochemical treatment system of high COD waste water of high salt |
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| CN202021198576.0U CN212833304U (en) | 2020-06-24 | 2020-06-24 | Biochemical treatment system of high COD waste water of high salt |
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| CN212833304U true CN212833304U (en) | 2021-03-30 |
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Address after: Room 106-259, building 3, No. 69, Aoti street, Jianye District, Nanjing, Jiangsu 210019 Patentee after: Nanjing Heyi Environment Group Co.,Ltd. Address before: Room 106-259, building 3, No. 69, Aoti street, Jianye District, Nanjing, Jiangsu 210019 Patentee before: Nanjing Heyi Environmental Technology Co.,Ltd. |
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Address after: Room 106-259, building 3, No. 69, Aoti street, Jianye District, Nanjing, Jiangsu 210019 Patentee after: Nanjing Heyi Environmental Technology Co.,Ltd. Address before: Room 104-9, Pancheng science and technology innovation center, 38 Pancheng back street, Jiangbei new district, Nanjing City, Jiangsu Province, 211100 Patentee before: Nanjing Heyi Environmental Technology Co.,Ltd. |