CN217556021U - Phenolic wastewater treatment system - Google Patents
Phenolic wastewater treatment system Download PDFInfo
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- CN217556021U CN217556021U CN202221845918.2U CN202221845918U CN217556021U CN 217556021 U CN217556021 U CN 217556021U CN 202221845918 U CN202221845918 U CN 202221845918U CN 217556021 U CN217556021 U CN 217556021U
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Abstract
A phenol-containing wastewater treatment system comprises a regulating tank, a micro-electrolysis reactor, a neutralization sedimentation tank, a neutralization water tank, an anaerobic biochemical unit, an AO biochemical unit, a secondary sedimentation tank and a tail end deep treatment unit which are sequentially communicated through pipelines; the neutralization sedimentation tank comprises a neutralization reaction tank and a vertical flow sedimentation tank; the anaerobic biochemical unit comprises a pressure water distribution system and a three-phase separation system; adopting an anaerobic, anoxic and aerobic combined process to domesticate and culture the compound microbial flora to synergistically degrade organic matters in the wastewater; the Fenton process is selected for advanced treatment, most organic matters are oxidized without selectivity by utilizing hydroxyl free radicals generated by reaction, and the effluent is ensured to stably reach the standard; the materialized sludge and the biochemical sludge generated in the operation process of the wastewater treatment facility are dehydrated, and the dried sludge is treated outside, so that secondary pollution is avoided; and (3) collecting and purifying peculiar smell gases such as hydrogen sulfide, methane and the like generated in the operation process of the wastewater treatment facility, and discharging at high altitude.
Description
Technical Field
The utility model relates to a waste water treatment device technical field specifically is a phenol-containing waste water treatment system.
Background
Phenol is an organic compound formed by directly connecting a hydroxyl group (-OH) with an aromatic nucleus (a benzene ring or a fused benzene ring). The phenolic compounds include phenol, cresol, aminophenol, nitrophenol, naphthol, chlorophenol and the like, wherein the phenol and the cresol are most polluted. The phenolic compound is a protogenic poison, has toxic and killing effects on all living individuals, can solidify protein, has the characteristics of high toxicity, difficult degradability and the like, cannot completely reach the standard of wastewater by a conventional treatment process, and can seriously influence the environment by the substandard wastewater discharge.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a phenol-containing wastewater treatment system to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a phenolic wastewater treatment system comprises a regulating reservoir, a micro-electrolysis reactor, a neutralization sedimentation tank, a neutralization water tank, an anaerobic biochemical unit, an AO biochemical unit, a secondary sedimentation tank and a tail end deep treatment unit which are sequentially communicated through pipelines;
the neutralization sedimentation tank comprises a neutralization reaction tank and a vertical flow sedimentation tank;
the anaerobic biochemical unit comprises a pressure water distribution system positioned at the bottom of the anaerobic biochemical unit and a three-phase separation system positioned in the middle of the anaerobic biochemical unit;
the bottom of the neutralization pond is provided with a submersible sewage pump which is communicated with the pressure water distribution system through a pipeline;
the AO biochemical unit comprises an anoxic tank and an aerobic tank, an internal reflux pump is arranged in the aerobic tank, the end part of the internal reflux pump is connected with a pipeline, and the pipeline extends into the anoxic tank;
the terminal advanced treatment unit comprises a Fenton reaction tank and a neutralization sedimentation tank.
Preferably, still include the mud homogeneity jar, the bottom of vertical sedimentation tank, two sedimentation tanks and neutralization sedimentation tank all is provided with the mud backwash pump, and the mud backwash pump all communicates with the mud homogeneity jar through the pipeline.
Preferably, the system also comprises a dosing system, and the dosing system is respectively connected to the regulating tank, the neutralization reaction tank, the Fenton reaction tank and the sludge homogenizing tank through pipelines.
Preferably, the bottom of the regulating reservoir, the bottom of the micro-electrolysis reactor, the bottom of the neutralization water tank and the bottom of the aerobic tank are all provided with aeration systems, and the aeration systems are all connected to an external roots blower through gas circuits.
Preferably, still include biological deodorization system, biological deodorization system has the draught fan through the gas circuit connection, equalizing basin, neutralization sedimentation tank, neutralization pond, anaerobism biochemical unit, oxygen deficiency pond, good oxygen pond, two heavy ponds and terminal advanced treatment unit's top all is provided with the gas collecting channel, and the gas collecting channel passes through gas circuit and draught fan intercommunication.
Preferably, the device also comprises a sludge feeding pump and an external membrane filter press, wherein the membrane filter press is connected to the discharge end of the sludge feeding pump through a pipeline, and the feed end of the sludge feeding pump is communicated with the sludge homogenizing tank through a pipeline.
Preferably, a submersible stirrer is installed at the bottom of the anoxic pond.
Preferably, the number of the dosing systems is four, and each monomer in the regulating tank, the neutralization reaction tank, the fenton reaction tank and the sludge homogenizing tank is independently connected to one of the four dosing systems through a pipeline.
Preferably, the device also comprises a centrifugal pump, and two ends of the centrifugal pump are respectively communicated with a pipeline on the regulating tank and a pipeline on the micro-electrolysis reactor.
Preferably, the end-connected pipeline of the internal reflux pump extends to the upper half part of the inner cavity of the anoxic pond, and the outlet of the end-connected pipeline of the internal reflux pump is vertically downward
Compared with the prior art, the beneficial effects of the utility model are that: a microelectrolysis strong oxidation pretreatment process is selected, and the reducibility of iron in the filler, electrochemical oxidation and flocculation adsorption triple effects of iron ion generation are utilized under the action of an acidic and metal catalyst, so that organic matter functional groups are changed, the biodegradability of the wastewater is improved, and good conditions are provided for subsequent biochemical units;
the biochemical unit adopts an anaerobic, anoxic and aerobic combined process to domesticate and culture the compound microbial flora to degrade organic matters in the wastewater in a synergic manner;
firstly, in an anaerobic stage, fully mixing with a sludge bed through a pressure water distribution system to degrade macromolecular organic matters into micromolecular substances, ammoniating organic nitrogen, and then in an anoxic and aerobic stage, synchronously removing total nitrogen and other organic matters in the wastewater by utilizing a nitrification-denitrification reaction;
the Fenton process is selected for advanced treatment, most organic matters are oxidized without selectivity by utilizing hydroxyl free radicals generated by reaction, and the effluent is ensured to stably reach the standard;
the materialized sludge and the biochemical sludge generated in the operation process of the wastewater treatment facility are dehydrated, and the dried sludge is treated outside, so that secondary pollution is avoided;
and (3) collecting and purifying peculiar smell gases such as hydrogen sulfide, methane and the like generated in the operation process of the wastewater treatment facility, and discharging at high altitude.
Drawings
Fig. 1 is a block diagram of the present invention.
In the figure: 1. the system comprises a regulating tank, 2, a centrifugal pump, 3, a micro-electrolysis reactor, 4, a neutralization sedimentation tank, 401, a neutralization reaction tank, 402, a vertical flow sedimentation tank, 5, a neutralization water tank, 501, a submersible sewage pump, 6, an anaerobic biochemical unit, 601, a pressure water distribution system, 602, a three-phase separation system, 7, an anoxic tank, 701, a submersible stirrer, 8, an aerobic tank, 801, an internal reflux pump, 9, a secondary sedimentation tank, 10, a terminal deep treatment unit, 101, a Fenton reaction tank, 102, a sedimentation tank, 11, a sludge homogenizing tank, 12, a dosing system, 13, a sludge feeding pump, 14, a biological deodorization system, 15 and an induced draft fan.
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 efforts all belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a phenol-containing wastewater treatment system comprises a regulating tank 1, a micro-electrolysis reactor 3, a neutralization sedimentation tank 4, a neutralization water tank 5, an anaerobic biochemical unit 6, an AO biochemical unit, a secondary sedimentation tank 9 and a tail end deep treatment unit 10 which are sequentially communicated through pipelines;
the neutralization sedimentation tank 4 comprises a neutralization reaction tank 401 and a vertical flow sedimentation tank 402;
the anaerobic biochemical unit 6 comprises a pressure water distribution system 601 positioned at the bottom of the anaerobic biochemical unit 6 and a three-phase separation system 602 positioned in the middle of the anaerobic biochemical unit 6;
the pressure water distribution system 601 adopts a pressurizing water outlet mode, and can be selected from but not limited to a pressurizing pump;
the three-phase separation system 602 adopts a three-phase separation centrifuge;
a submersible sewage pump 501 is arranged at the bottom of the neutralization water tank 5, and the submersible sewage pump 501 is communicated with the pressure water distribution system 601 through a pipeline;
the AO biochemical unit comprises an anoxic tank 7 and an aerobic tank 8, an internal reflux pump 801 is arranged in the aerobic tank 8, the end part of the internal reflux pump 801 is connected with a pipeline, and the pipeline extends into the anoxic tank 7;
the end advanced treatment unit 10 comprises a fenton reaction tank 101 and a sedimentation tank 102.
Particularly, the device also comprises a sludge homogenizing tank 11, wherein sludge return pumps are arranged at the bottoms of the vertical flow sedimentation tank 402, the secondary sedimentation tank 9 and the neutralization sedimentation tank 102 and are communicated with the sludge homogenizing tank 11 through pipelines.
Specifically, a dosing system 12 is further included, and the dosing system 12 is respectively connected to the regulating reservoir 1, the neutralization reaction reservoir 401, the fenton reaction reservoir 101 and the sludge homogenizing tank 11 through pipelines.
The dosing system adopts a special dosing device in a sewage treatment system, is a known technology, and is not described in an excessive way in the document.
Specifically, aeration systems are arranged at the bottoms of the adjusting tank 1, the micro-electrolysis reactor 3, the neutralization water tank 5 and the aerobic tank 8, and are connected to external roots blowers through gas paths.
The aeration system adopts an aeration pipe or an aeration device for wastewater treatment, which is proposed by the prior patent document with the publication number of CN215480058U, to realize aeration.
Particularly, still include biological deodorization system 14, biological deodorization system 14 is connected with draught fan 15 through the gas circuit, equalizing basin 1, neutralization sedimentation tank 4, neutralization pond 5, anaerobism biochemical unit 6, oxygen deficiency pond 7, good oxygen pond 8, two heavy ponds 9 and the top of terminal advanced treatment unit 10 all are provided with the gas collecting channel, and the gas collecting channel passes through gas circuit and draught fan 15 intercommunication.
The biological deodorization system 14 is a sewage station biological deodorization system disclosed in the patent document with publication number CN210125294U, and is directly used in combination without modification of the device and principle method, so the present application document does not make much description.
Specifically, the device further comprises a sludge feeding pump 13 and a membrane filter press 14, wherein the membrane filter press 14 is connected to the discharge end of the sludge feeding pump 13 through a pipeline, and the feed end of the sludge feeding pump 13 is communicated with the sludge homogenizing tank 11 through a pipeline.
A water pump, but not limited to, may be used on each pipeline to assist in propelling the flow of wastewater.
Specifically, a submersible stirrer 701 is installed at the bottom of the anoxic tank 7, so that the waste liquid in the anoxic tank 7 is stirred, and the submersible stirrer can be used underwater.
Specifically, the number of the chemical adding systems 12 is four, and each monomer in the adjusting tank 1, the neutralization reaction tank 401, the fenton reaction tank 101 and the sludge homogenizing tank 11 is individually connected to one of the four chemical adding systems 12 through a pipeline, so that the chemicals can be delivered one to one and the separate control can be realized.
The device also comprises a centrifugal pump 2, wherein two ends of the centrifugal pump 2 are respectively communicated with a pipeline on the regulating reservoir 1 and a pipeline on the micro-electrolysis reactor 3, and the waste water in the regulating reservoir 1 is pumped by the centrifugal pump 2.
The end-connected pipeline of the internal reflux pump 801 extends to the upper half part of the inner cavity of the anoxic pond 7, and the outlet of the end-connected pipeline of the internal reflux pump 801 is vertically downward.
The electric appliance is powered by a storage battery or is externally connected to an external power supply, and the actual operation is performed.
The flowing of waste water can be realized among all units in the paper through a water pump or a terrain difference, and a filter screen or an auxiliary power device can be added at some positions according to the viscosity of the waste water and the content of solid waste.
An adjusting tank 1: collecting the wastewater according to the quality of the pollutant, respectively arranging adjusting ponds for balancing the quality and quantity of the wastewater, keeping the wastewater for 12-24 h, and arranging a perforation aeration system in each pond;
the micro-electrolysis reactor 3: carrying out strong oxidation pretreatment on high-concentration wastewater by using electrochemical reaction, lifting the high-concentration wastewater from a regulating pool to a micro-electrolysis reactor by a pump, adding acid to regulate the pH value to 2-3, fully reacting for 2 hours, and then, automatically flowing the effluent to a neutralization sedimentation tank 4, wherein the pH value of the effluent is 4-5;
and (4) a neutralization sedimentation tank: the method comprises the following steps of dividing the wastewater into a neutralization reaction tank 401 and a vertical flow sedimentation tank 402, automatically flowing high-concentration wastewater into the neutralization reaction tank after micro-electrolysis pretreatment, adding NaOH solution (10%) to adjust the pH value to 8, adding 4 per mill PAM solution (1.5 per mill), forming insoluble pollutants in the wastewater into flocs under the action of a medicament, and controlling the surface load to be 0.6-0.8 m in a sedimentation zone 3 /(m 2 H) removal by gravity sedimentation. The effluent of the sedimentation tank automatically flows into a neutralization water tank 5 to be mixed with low-concentration wastewater, and is lifted to a subsequent biochemical treatment unit by a pump, wherein the biochemical treatment unit is divided into an anaerobic treatment unit and an aerobic treatment unit;
the anaerobic biochemical unit 6: the wastewater enters an anaerobic unit, residual macromolecular organic matters in fractions are degraded into micromolecular organic matters under the action of anaerobic bacteria, organic nitrogen substances are degraded into inorganic nitrogen, favorable conditions are created for a subsequent aerobic biochemical unit, a water distribution system and a three-phase separation system are arranged in an anaerobic tank, the sludge concentration is 9000-12000mg/L, and the effluent of the anaerobic tank automatically flows to an AO biochemical unit;
AO biochemical unit: a submersible mixer is arranged in the A tank, the dissolved oxygen is controlled to be 0.2-0.5 mg/L, a rotational flow aeration system is arranged in the O tank, the dissolved oxygen is controlled to be 2-4 mg/L, an internal reflux system (2 times of flow) is arranged to reflux the nitrified liquid to the A tank, the sludge concentration of the AO biochemical tank is 3500-5000mg/L, the denitrification load is 0.01-0.03 kgNO 3 The effluent of the AO biochemical pool automatically flows to a secondary sedimentation pool, and the concentration of N/kgMLSS d and C/N are controlled to be 4-6;
a secondary sedimentation tank 9: vertical flow type, surface load 0.6-0.8 m 3 /(m 2 H), staying for 2h, removing aged microorganisms in water by gravity settling, arranging a sludge reflux pump (with the flow rate of 0.5-1 time) in the secondary sedimentation tank to reflux sludge to the anaerobic tank, and enabling the effluent of the secondary sedimentation tank to automatically flow to a tail end deep treatment unit;
the end depth processing unit 10: the method comprises a Fenton reaction tank 101 and a sedimentation tank 102, sulfuric acid is added into a reaction zone to adjust the pH value to 3-4, a Fenton reagent is added according to the proportion of 1 3 /(m 2 H) removing by gravity settling, and discharging effluent into a municipal pipe network;
sludge treatment: materialized sludge and secondary sedimentation tank residual sludge generated in the wastewater treatment process are stored in a sludge concentration tank and then are conveyed to a diaphragm filter pressing dehydration device through a sludge feeding pump 13, dried sludge is transported to qualified enterprises for advanced treatment, and leachate flows back to a comprehensive adjusting tank.
Waste gas treatment: each pool body generating peculiar smell is covered and sealed, and is subjected to ventilation and collection in a dewatering machine room, the waste gas is conveyed to the biological deodorization system 14 under the action of a waste gas draught fan, and the waste gas such as hydrogen sulfide, methane and the like is absorbed and degraded and then is discharged in the upper air through an exhaust funnel.
A microelectrolysis strong oxidation pretreatment process is selected, and the reducibility of iron in the filler, electrochemical oxidation and flocculation adsorption triple effects of iron ion generation are utilized under the action of an acidic and metal catalyst, so that organic matter functional groups are changed, the biodegradability of the wastewater is improved, and good conditions are provided for subsequent biochemical units;
the biochemical unit adopts an anaerobic, anoxic and aerobic combined process to domesticate and culture the compound microbial flora to synergistically degrade organic matters in the wastewater;
firstly, in an anaerobic stage, fully mixing with a sludge bed through a pressure water distribution system, degrading macromolecular organic matters into micromolecular substances, ammoniating organic nitrogen, and then in an anoxic and aerobic stage, synchronously removing total nitrogen and other organic matters in the wastewater by utilizing a nitrification-denitrification reaction;
the Fenton process is selected for advanced treatment, most organic matters are oxidized without selectivity by utilizing hydroxyl free radicals generated by reaction, and the effluent is ensured to stably reach the standard;
the materialized sludge and biochemical sludge generated in the operation process of the wastewater treatment facility are dehydrated, and the dried sludge is subjected to outsourcing treatment, so that secondary pollution is avoided;
and (3) collecting, purifying and discharging peculiar smell gases such as hydrogen sulfide, methane and the like generated in the operation process of the wastewater treatment facility at high altitude.
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 (10)
1. The utility model provides a phenolic wastewater treatment system which characterized in that: comprises an adjusting tank (1), a micro-electrolysis reactor (3), a neutralization sedimentation tank (4), a neutralization water tank (5), an anaerobic biochemical unit (6), an AO biochemical unit, a secondary sedimentation tank (9) and a tail end deep treatment unit (10) which are sequentially communicated through pipelines;
the neutralization sedimentation tank (4) comprises a neutralization reaction tank (401) and a vertical flow sedimentation tank (402);
the anaerobic biochemical unit (6) comprises a pressure water distribution system (601) positioned at the bottom of the anaerobic biochemical unit (6) and a three-phase separation system (602) positioned in the middle of the anaerobic biochemical unit (6);
a submersible sewage pump (501) is arranged at the bottom of the neutralization pond (5), and the submersible sewage pump (501) is communicated with the pressure water distribution system (601) through a pipeline;
the AO biochemical unit comprises an anoxic tank (7) and an aerobic tank (8), an internal reflux pump (801) is arranged in the aerobic tank (8), the end part of the internal reflux pump (801) is connected with a pipeline, and the pipeline extends into the anoxic tank (7);
the terminal advanced treatment unit (10) comprises a Fenton reaction tank (101) and a sedimentation tank (102).
2. The phenol-containing wastewater treatment system according to claim 1, wherein: the device is characterized by further comprising a sludge homogenizing tank (11), wherein sludge return pumps are arranged at the bottoms of the vertical flow sedimentation tank (402), the secondary sedimentation tank (9) and the sedimentation tank (102) and are communicated with the sludge homogenizing tank (11) through pipelines.
3. The phenol-containing wastewater treatment system according to claim 2, characterized in that: still include medicine system (12), and medicine system (12) are connected to equalizing basin (1), neutralization reaction pond (401), fenton reaction pond (101) and mud homogeneity jar (11) through the pipeline respectively.
4. The phenol-containing wastewater treatment system according to claim 1, wherein: and aeration systems are arranged at the bottoms of the regulating tank (1), the micro-electrolysis reactor (3), the neutralization water tank (5) and the aerobic tank (8), and are connected to an external Roots blower through gas circuits.
5. The phenolic wastewater treatment system of claim 1, wherein: still include biological deodorization system (14), biological deodorization system (14) are connected with draught fan (15) through the gas circuit, the top of equalizing basin (1), neutralization sedimentation tank (4), neutralization pond (5), anaerobism biochemical unit (6), oxygen deficiency pond (7), good oxygen pond (8), two heavy ponds (9) and terminal degree of depth processing unit (10) all is provided with the gas collecting channel, and the gas collecting channel passes through gas circuit and draught fan (15) intercommunication.
6. The phenol-containing wastewater treatment system according to claim 2, characterized in that: the device is characterized by further comprising a sludge feeding pump (13) and an external membrane filter press, wherein the membrane filter press is connected to the discharge end of the sludge feeding pump (13) through a pipeline, and the feed end of the sludge feeding pump (13) is communicated with the sludge homogenizing tank (11) through a pipeline.
7. The phenolic wastewater treatment system of claim 1, wherein: the bottom of the anoxic pond (7) is provided with a submersible stirrer (701).
8. The phenolic wastewater treatment system of claim 3, wherein: the number of the dosing systems (12) is four, and each monomer in the adjusting tank (1), the neutralization reaction tank (401), the Fenton reaction tank (101) and the sludge homogenizing tank (11) is independently connected to one of the four dosing systems (12) through a pipeline.
9. The phenol-containing wastewater treatment system according to claim 1, wherein: the device is characterized by further comprising a centrifugal pump (2), and two ends of the centrifugal pump (2) are respectively communicated with a pipeline on the regulating reservoir (1) and a pipeline on the micro-electrolysis reactor (3).
10. The phenolic wastewater treatment system of claim 1, wherein: the end-connected pipeline of the internal reflux pump (801) extends to the upper half part of the inner cavity of the anoxic pond (7), and the outlet of the end-connected pipeline of the internal reflux pump (801) is vertically downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221845918.2U CN217556021U (en) | 2022-07-18 | 2022-07-18 | Phenolic wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221845918.2U CN217556021U (en) | 2022-07-18 | 2022-07-18 | Phenolic wastewater treatment system |
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| Publication Number | Publication Date |
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| CN217556021U true CN217556021U (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221845918.2U Active CN217556021U (en) | 2022-07-18 | 2022-07-18 | Phenolic wastewater treatment system |
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| CN (1) | CN217556021U (en) |
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