CN215906051U - Device for pretreating refractory organic wastewater by pure aluminum material - Google Patents
Device for pretreating refractory organic wastewater by pure aluminum material Download PDFInfo
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- CN215906051U CN215906051U CN202122244802.5U CN202122244802U CN215906051U CN 215906051 U CN215906051 U CN 215906051U CN 202122244802 U CN202122244802 U CN 202122244802U CN 215906051 U CN215906051 U CN 215906051U
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 80
- 239000002351 wastewater Substances 0.000 title claims abstract description 67
- 239000000463 material Substances 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000002253 acid Substances 0.000 claims abstract description 31
- 239000003513 alkali Substances 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims description 11
- 238000004062 sedimentation Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000005416 organic matter Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 2
- 238000006731 degradation reaction Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 17
- 238000004065 wastewater treatment Methods 0.000 abstract description 8
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000000593 degrading effect Effects 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- 230000007059 acute toxicity Effects 0.000 description 5
- 231100000403 acute toxicity Toxicity 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000003475 lamination Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium chloride Substances Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000033116 oxidation-reduction process Effects 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 229960001701 chloroform Drugs 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 150000003431 steroids Chemical class 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- XVMSFILGAMDHEY-UHFFFAOYSA-N 6-(4-aminophenyl)sulfonylpyridin-3-amine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=N1 XVMSFILGAMDHEY-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960000074 biopharmaceutical Drugs 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000005753 chloropyridines Chemical class 0.000 description 1
- -1 comprises Al (OH)3 Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005008 domestic process Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010914 pesticide waste Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a device for pretreating refractory organic wastewater by using a pure aluminum material, which comprises the following steps: the pretreatment area, the upflow reactor, the alkali adjusting area and the solid-liquid separation area are communicated in sequence; the pretreatment area comprises a pipeline mixer, an acid adjusting port and a first online pH meter, wherein the acid adjusting port is arranged on the pipeline mixer and used for adding acid liquor, the pipeline mixer is used for mixing wastewater and the acid liquor, and the online pH meter is used for adjusting the pH value of the mixed liquor; the upflow reactor is internally provided with a reaction contact zone, and the reaction contact zone is provided with a water distributor, an aluminum layer and a first stirrer. The utility model not only solves the problem of efficiently degrading organic matters, but also solves the operation problems of hardening, blocking and the like of the conventional iron-carbon packed bed, ensures the stability and the economical efficiency of organic wastewater treatment, and can recycle the aluminum mud; the method has the advantages of high efficiency, greenness, no pollution, strong applicability and small loss.
Description
Technical Field
The utility model relates to the technical field of medical wastewater treatment, in particular to a device for pretreating refractory organic wastewater by using a pure aluminum material.
Background
The organic matter difficult to degrade refers to organic matter which can not be degraded by microorganisms at a high enough speed under the conventional conditions, even inhibits the growth of the microorganisms, seriously causes the death of a large number of microorganisms, collapses a sewage treatment system, and has various types, and is sourced from various industries such as chemical industry, printing and dyeing, pesticides and the like. At present, the main treatment of industrial wastewater and sewage treatment plants depends on advanced oxidation method or physical adsorption method and other means to pretreat the refractory wastewater, then the refractory wastewater enters a biochemical system and finally reaches the standard for discharge. Catalytic Material Complex H formed by combining multiple Metal species in advanced Oxidation Process2O2A Fenton-like process is formed to generate hydroxyl free radicals (. OH), so that the concentration of part of refractory organics in the wastewater is reduced; the iron-carbon catalyst promotes the internal oxidation-reduction reaction by utilizing the potential difference of elemental iron and carbon, and is matched with H2O2And forming a Fenton-like process to further degrade organic matters. The two processes are easy to be subjected to Cl in actual operation-The plasma influences and the effect is not good, the operation cost is high, and the like, and how to ensure the efficient degradation of organic matters and improve the biodegradability of wastewater after reaction becomes a research hotspot at present.
Multiple kinds ofThe catalytic material and the iron-carbon catalyst that the metal class formed have strengthened the Fenton effect to a certain extent, have promoted the efficiency of reaction, but also have its limitation, for example: (1) the free metal ions can inhibit the growth of microorganisms, and due to high loss, a large amount of alkali liquor is required to be added to remove metal precipitates in a mode of forming metal precipitates, so that the removal effect is limited, and the operation cost is increased; (2) the components such as ferric hydroxide in the metal precipitate belong to hazardous waste, are complex, are difficult to recycle, and cause secondary pollution; (3) catalyst Fenton process, is susceptible to Cl-Plasma influence, leading to a reduction in its removal effect; (4) the granular catalyst has heavier density, higher requirement on infrastructure, needs to react under the acidic condition of pH about 3, and has higher construction and operation cost.
Aluminum metal, the most abundant metal element in the earth's crust, with the amount of metal element in the 1 st position, is a silver white light metal, has better ductility, pure aluminum (E0 ═ 1.662V) has higher redox potential than zero-valent iron (E0 ═ 0.43V), however, an inert layer (Al) is usually present on the surface of the elemental aluminum2O3) And reducing the reducibility of the resin. The simple substance pure aluminum material is an amphoteric material and has better reducibility under both acidic and alkaline conditions.
At present, similar wastewater treatment devices in China are lacked, the environmental pollution is caused by the flooding of wastewater, the cost of the treatment devices is high, the effect is poor, high wastewater treatment effect tends to be obtained by high resource input, resources are greatly wasted, the loss is large, in the case of organic wastewater treatment, electrocatalysis, advanced oxidation methods and the like are high input to obtain high return, and the simpler pretreatment of polymetallic or iron-carbon catalyst + Fenton process needs a large amount of ferrous salt and H2O2Adding the Fenton process agent, and the metal catalyst has heavier density (the density is 5-8 g/cm)3) The requirement for capital construction is high, and great restriction exists.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a device for pretreating organic wastewater difficult to degrade by using a pure aluminum material.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a device for pretreating refractory organic wastewater by pure aluminum materials comprises: the pretreatment area, the upflow reactor, the alkali adjusting area and the solid-liquid separation area are communicated in sequence;
the pretreatment area comprises a pipeline mixer, an acid adjusting port and a first online pH meter, wherein the acid adjusting port is arranged on the pipeline mixer and is used for adding acid liquor (sulfuric acid), the pipeline mixer is used for mixing wastewater and the acid liquor, and the first online pH meter is used for adjusting the pH value of the mixed liquor;
the upflow reactor is internally provided with a reaction contact zone, the reaction contact zone is provided with a water distributor, an aluminum layer and a first stirrer, the water distributor is used for inputting pretreated wastewater to enter the reaction contact zone, the aluminum layer is used for contacting the wastewater, and the first stirrer is used for stirring the wastewater to ensure that the aluminum layer is fully contacted with the wastewater.
Preferably, the device for pretreating refractory organic matter wastewater by using the pure aluminum material further comprises a water inlet pipe and a water inlet valve arranged on the water inlet pipe, wherein the water inlet pipe is connected with the water inlet end of the pipeline mixer; the acid regulating port is arranged at one end of the pipeline mixer and is arranged at the water inlet end of the pipeline mixer; the first online pH meter is arranged at the other end of the pipeline mixer and at the water outlet end of the pipeline mixer.
Preferably, the device comprises a water outlet pipe and a water stop valve arranged on the water outlet pipe; the water outlet pipe is connected with the water outlet end of the pipeline mixer.
Preferably, the alkali adjusting area comprises an alkali adjusting port, a second stirrer, a second online pH meter and a guide wall; the alkali adjusting port is arranged on one side of the upper part of the alkali adjusting area, the second stirrer is arranged in the middle of the alkali adjusting area, and the guide wall is arranged on the other side of the alkali adjusting area.
Preferably, a water outlet is arranged above the solid-liquid separation zone, a mud valve is arranged at the bottom of the solid-liquid separation zone, the mud valve is connected with a pipeline, and the pipeline is connected with an external mud storage pool.
Preferably, the solid-liquid separation zone comprises an advection type sedimentation tank, a vertical type sedimentation tank and a radial type sedimentation tank.
Preferably, the water distributor is arranged at the bottom of the reaction contact area, the aluminum layer is arranged right above the water distributor, and the first stirrer is arranged between the water distributor and the aluminum layer; the water distributor is also connected with a water outlet pipe.
Preferably, the aluminum layer comprises a multi-layer porous aluminum structure, hollow spherical aluminum and a suspended membrane-shaped aluminum structure.
By adopting the technical scheme of the utility model, the utility model has the following beneficial effects:
the utility model not only solves the economic problem, but also ensures the stability of organic wastewater treatment, and the aluminum mud can be recycled, compared with domestic more used process devices, the whole system has simple structure, convenient operation and maintenance, low cost, more flexibility and no pollution compared with the conventional advanced oxidation technology; the catalyst overcomes the defects of the existing catalyst material by skillfully applying the advantage of reducibility of the simple substance aluminum, and has the advantages of high efficiency, greenness, no pollution, strong applicability and small loss.
(1) The aluminum is lighter, the requirement on capital construction is lower compared with other metal particle catalysts, the effect of pretreating organic matters by using the catalyst and Fenton process which are more utilized at home at present can be achieved by using the strong oxidation-reduction property of the aluminum, and no additional ferrous salt and H are added2O2The Fenton process agents are used, so that the operation cost is reduced, and the agent wastewater is saved;
(2) the upflow reactor utilizes the characteristic of water body flow, is assisted by stirring, is fully contacted for 3-4h, and ensures the contact space between the water body and the material;
(3) the Fenton process commonly used in China at present suffers from Cl for a long time-The plasma influence makes the operation effect not good, the catalyst material is inhibited, the utility model is not influenced by Cl-The plasma influences the operation, so that the high-efficiency operation can be preserved for a long time;
(4) the aluminum mud is convenient to recover, and the main component of the aluminum mud is Al (OH)3、AlCl3Or Al2(SO4)3And partial adsorbed organic matters have a single structure, and the organic matters adsorbed by the aluminum mud can be removed by high-temperature roasting after the aluminum mud is dehydrated, so that the aluminum flocculant is prepared.
Drawings
FIG. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
FIG. 3 is a schematic view of an aluminum layer structure according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, a first feature "on" or "an over" a second feature unless expressly stated or limited otherwise
"under" may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact, but being in contact with each other through additional features between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 3, the present invention provides a device for pre-treating refractory organic wastewater with pure aluminum material, comprising: the pretreatment area I, the upflow reactor II, the alkali adjusting area III and the solid-liquid separation area IV are sequentially communicated, the strong oxidation-reduction capacity of aluminum materials is utilized, the organic matters which are difficult to degrade are efficiently treated, the chemical performance of aluminum elements is benefited, the wastewater treatment construction and operation cost are greatly reduced, and meanwhile, the aluminum sludge is recycled, so that the high-efficiency green environmental protection effect is achieved;
the pretreatment area I comprises a pipeline mixer 3, an acid adjusting port 2 and a first online pH meter 4, wherein the acid adjusting port 2 and the first online pH meter 4 are arranged on the pipeline mixer 3, the acid adjusting port 2 is used for adding acid liquor (sulfuric acid), the pipeline mixer 3 is used for mixing wastewater and the acid liquor, the first online pH meter 4 is used for adjusting the pH value of mixed liquor, and the mixed liquor enters a reaction contact area through a water distributor 6;
the upflow reactor II is internally provided with a reaction contact zone, the contact condition of a simple substance pure aluminum material and refractory organic wastewater is improved by utilizing water flow to rise and stir, and the reaction efficiency is increased, the reaction contact zone is provided with a water distributor 6, an aluminum layer 7 and a first stirrer 8, the water distributor 6 is used for inputting pretreated wastewater into the reaction contact zone, the aluminum layer 7 is used for contacting the wastewater, and the first stirrer 8 is used for stirring the wastewater to ensure that the aluminum layer is fully contacted with the wastewater.
The water inlet valve 1 in the embodiment is used for controlling the inlet and outlet of external wastewater, the water inlet pipe is connected with an external pump, refractory organic wastewater is pumped into the upflow reactor II, and the acid adjusting port 2 and the pipeline mixer 3 are arranged to ensure the pH value of the wastewater in the upflow reactor II; firstly, acid liquor (sulfuric acid) is added through an acid adjusting port 2, wastewater and the acid liquor are mixed through a pipeline mixer 3, the pH value is adjusted to 3-4 through a first online pH meter 4, and a mixed solution enters a reaction contact zone through a water distributor 6; the device for pretreating refractory organic matter wastewater by using the pure aluminum material further comprises a water inlet pipe 20 and a water inlet valve 1 arranged on the water inlet pipe 20, wherein the water inlet pipe 20 is connected with the water inlet end of the pipeline mixer 3; the acid adjusting port 2 is arranged at one end of the pipeline mixer 3 and is arranged at the water inlet end of the pipeline mixer 3; the first online pH meter 4 is arranged at the other end of the pipeline mixer 3 and at the water outlet end of the pipeline mixer 3; the first online pH meter 4 has a pH value of 3 to 4.
The refractory organics in the embodiment mainly refer to pharmaceutical wastewater and pesticide wastewater, and contain a large amount of chlorinated organics and chlorinated pyridine products; the steroid raw material medicine is produced, and the waste water contains chlorinated organic compounds such as dichloroethane, trichloromethane, pyridine and the like and nitrogen heterocyclic pollutants.
The water outlet pipe 30 in this embodiment is used for connecting the pipeline mixer 3 and the water distributor 6, the water stop valve 5 is used for controlling the water switch after the pretreatment area is treated, and the device for pretreating refractory organic wastewater by using pure aluminum materials further comprises the water outlet pipe 30 and the water stop valve 5 arranged on the water outlet pipe 30; the water outlet pipe 30 is connected with the water outlet end of the pipeline mixer 3.
In the embodiment, the effluent of the upflow reactor II enters the alkali adjusting zone III, alkali liquor is injected through the alkali adjusting port 9, the second stirrer 80 is uniformly mixed, the guide wall 10 avoids short flow, and the pH value of the effluent is ensured to be stabilized between 7.0 and 9.5; the alkali adjusting area comprises an alkali adjusting port 9, a second stirrer 80, a second online pH meter and a guide wall 10; the alkali adjusting port 9 is arranged on one side of the upper part of the alkali adjusting area III, the second stirrer 80 is arranged in the middle of the alkali adjusting area III, the guide wall 3 is arranged on the other side of the alkali adjusting area, and the pH value of the second online pH meter 40 is 7-9.5.
The supernatant of the solid-liquid separation zone IV in the embodiment flows into a biochemical section for biochemical treatment, the aluminum sludge discharge end is collected and connected to a separate sludge storage tank through an external pipeline for recycling, and the produced aluminum sludge mainly comprises Al (OH)3、AlCl3Or Al2(SO4)3And part of adsorbed organic matters, the structure is single, the recycling value is high, and the resource waste is avoided; a water outlet 11 is arranged above the solid-liquid separation zone IV, a mud valve 13 is arranged at the bottom of the solid-liquid separation zone IV, the mud valve 11 is connected with a pipeline, and the pipeline is connected with an external mud storage pool; the solid-liquid separation zone IV comprises an advection type sedimentation tank, a vertical type sedimentation tank and a radial type sedimentation tank;
the aluminum layer 7 in the embodiment is of a multi-layer porous structure, the contact time with water flow is ensured to be 4 hours, sufficient reaction is ensured, the speed of the first stirrer 8 is more than 50 revolutions per minute, the water distributor 6 is arranged at the bottom of a reaction contact area, the aluminum layer 7 is arranged right above the water distributor 6, and the first stirrer 8 is arranged between the water distributor 6 and the aluminum layer 7; the water distributor 6 is also connected with a water outlet pipe 30, and the aluminum layer 7 comprises a multi-layer porous aluminum structure, hollow spherical aluminum and a suspended membrane-shaped aluminum structure; need to guarantee waste water and aluminium lamination 7 fully to contact under the stirring situation of first agitator 8, because reaction process aluminium lamination consumes less, can suitably arrange aluminium lamination 7 excessively, regular replacement aluminium lamination material can.
The working principle of the utility model is as follows: (1) the PH of the wastewater in the upflow reactor II is ensured by pumping the refractory organic wastewater into the upflow reactor, and installing an acid adjusting port 2 and a pipeline mixer 3 on a pipeline; (2) a reaction contact area is arranged in the upflow reactor II, and the contact condition of the simple substance pure aluminum material and the refractory organic wastewater is improved by utilizing water flow to ascend and stir, so that the reaction efficiency is increased; (3) the wastewater after reaction automatically flows into an alkali adjusting area III, the pH value of the effluent is adjusted by stirring through a second stirrer 80, the effluent enters a precipitation area through a guide plate of a guide wall 10, and the biotoxicity and flocculation of the effluent are reduced by adjusting the alkalinity, so that a better pretreatment effect is achieved; (4) and the effluent after alkali adjustment contains aluminum mud, mud-water separation is realized through a sedimentation tank, the effluent enters a rear-end biochemical tank, and the aluminum mud is recycled.
Firstly, opening a valve 1 on a water inlet pipe in a pre-reaction zone, adding acid liquor into an acid adjusting port 2, mixing the acid liquor with wastewater, passing the mixture through a pipeline mixer 3, displaying a numerical value through a first online pH meter 4, controlling the adding amount of the acid liquor into the acid adjusting port 2, feeding the wastewater after acid adjustment into an up-flow reactor II through a water distributor 6, rising the wastewater through water pressure, and stirring and mixing the wastewater by a first stirrer 8 to be fully contacted with an aluminum layer 7.
After the wastewater after reaction enters an alkali adjusting area III, adding alkali liquor into an alkali adjusting opening 9, fully stirring by a second stirrer 80, allowing the wastewater to pass through a guide wall 10 and enter a solid-liquid separation area IV, displaying a numerical value by an online pH meter 4 by adjusting the pH of the effluent of the alkali adjusting area III, and adjusting the adding amount of the alkali liquor; and (3) entering a solid-liquid separation zone IV, precipitating, discharging the supernatant into a biochemical section, performing biochemical treatment, discharging the aluminum sludge into a sludge storage tank, and recovering aluminum salt at the lower part.
Example 1:
certain industrial park sewage treatment plant handles pesticide waste water, contains a large amount of chlorinated organics, adopts this device to handle the back, and the effect is as follows:
after the treatment by the device, the concentration of organic matters is reduced by 28.4%, the concentration of chlorinated organic matters is reduced by 46.9%, and the acute toxicity of the wastewater is also obviously reduced.
Example 2:
certain pesticide enterprise produces chloropyridine class product, and its waste water still contains a large amount of refractory organics after workshop preliminary treatment, adopts this device to handle the back, and the effect is as follows:
after the treatment of the device, the concentration of organic matters is reduced by 37.6 percent, the concentration of chlorinated organic matters is reduced by 51.5 percent, and the acute toxicity of the wastewater is also greatly reduced.
Example 3:
some bio-pharmaceuticals enterprise produces steroid bulk drug, contains chlorinated organic matter and nitrogen heterocyclic pollutant such as dichloroethane, chloroform, pyridine in the waste water, adopts this device to handle the back, and the effect is as follows:
after the treatment of the device, the concentration of organic matters is reduced by 20.5%, the concentration of chlorinated organic matters is reduced by 37.4%, and the acute toxicity of the wastewater is also greatly reduced.
Description of the drawings: the detection method of the data comprises the following steps: COD-dichromate determination of chemical oxygen demand of water quality (GB11914 acute toxicity test-luminous bacteria determination of acute toxicity of water quality (GB/T15441-.
The utility model not only solves the economic problem, but also ensures the stability of organic wastewater treatment, and the aluminum mud can be recycled, compared with domestic process devices, the whole system has simple structure, convenient operation and maintenance, low cost, more flexibility and no pollution compared with the conventional advanced oxidation technology; the catalyst overcomes the defects of the existing catalyst material by skillfully applying the advantage of reducibility of the simple substance aluminum, and has the advantages of high efficiency, greenness, no pollution, strong applicability and small loss.
(1) The aluminum is light, the requirement on capital construction is low compared with that of a multi-metal catalyst, the effect of pretreating organic matters by using the catalyst which is more utilized at home and a Fenton process at present can be achieved by using the strong oxidation-reduction property of aluminum, and no divalent iron salt or H is added additionally2O2The Fenton process agents are used, so that the operation cost is reduced, and the agent wastewater is saved;
(2) the upflow reactor utilizes the characteristic of water body flow, is assisted by stirring and is fully contacted for 4 hours, thereby ensuring the contact space between the water body and the material;
(3) the Fenton process commonly used in China at present suffers from Cl for a long time-The plasma influence makes the operation effect not good, the catalyst material is inhibited, the utility model is not influenced by Cl-The plasma influences the operation, so that the high-efficiency operation can be preserved for a long time;
(4) the aluminum mud is convenient to recover, and the main component of the aluminum mud is Al (OH)3、AlCl3Or Al2(SO4)3And partial adsorbed organic matters have a single structure, and the organic matters adsorbed by the aluminum mud can be removed by high-temperature roasting after the aluminum mud is dehydrated, so that the aluminum flocculant is prepared.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a device of difficult degradation organic matter waste water of pure aluminium material preliminary treatment which characterized in that includes: the pretreatment area, the upflow reactor, the alkali adjusting area and the solid-liquid separation area are communicated in sequence;
the pretreatment area comprises a pipeline mixer, an acid adjusting port and a first online pH meter, wherein the acid adjusting port is arranged on the pipeline mixer and used for adding acid liquor, the pipeline mixer is used for mixing wastewater and the acid liquor, and the online pH meter is used for adjusting the pH value of the mixed liquor;
the upflow reactor is internally provided with a reaction contact zone, the reaction contact zone is provided with a water distributor, an aluminum layer and a first stirrer, the water distributor is used for inputting pretreated wastewater to enter the reaction contact zone, the aluminum layer is used for contacting the wastewater, and the first stirrer is used for stirring the wastewater to ensure that the aluminum layer is fully contacted with the wastewater.
2. The apparatus for pretreating organic wastewater by using pure aluminum materials as claimed in claim 1, wherein the apparatus for pretreating organic wastewater by using pure aluminum materials further comprises a water inlet pipe and a water inlet valve arranged on the water inlet pipe, and the water inlet pipe is connected with the water inlet end of the pipeline mixer; the acid regulating port is arranged at one end of the pipeline mixer and is arranged at the water inlet end of the pipeline mixer; the first online pH meter is arranged at the other end of the pipeline mixer and at the water outlet end of the pipeline mixer.
3. The device for pretreating wastewater containing refractory organic substances by using the pure aluminum material as claimed in claim 2, wherein the device for pretreating wastewater containing refractory organic substances by using the pure aluminum material further comprises a water outlet pipe and a water stop valve arranged on the water outlet pipe; the water outlet pipe is connected with the water outlet end of the pipeline mixer.
4. The device for pretreating refractory organic wastewater by using the pure aluminum material as claimed in claim 1, wherein the soda adjusting zone comprises a soda adjusting port, a second stirrer, a second online pH meter and a guide wall; the alkali adjusting port is arranged on one side of the upper part of the alkali adjusting area, the second stirrer is arranged in the middle of the alkali adjusting area, and the guide wall is arranged on the other side of the alkali adjusting area.
5. The apparatus for pre-treating organic wastewater difficult to degrade by using pure aluminum material as claimed in claim 1, wherein the solid-liquid separation zone is provided with a water outlet at the upper part and a mud valve at the bottom, the mud valve is connected with a pipeline, and the pipeline is connected with an external mud storage tank.
6. The apparatus for pre-treating organic wastewater difficult to degrade by pure aluminum material as claimed in claim 1, wherein the solid-liquid separation zone comprises an advection type sedimentation tank, a vertical type sedimentation tank and a radial type sedimentation tank.
7. The device for pretreating refractory organic wastewater by using the pure aluminum material as claimed in claim 1, wherein the water distributor is arranged at the bottom of the reaction contact area, the aluminum layer is arranged right above the water distributor, and the first stirrer is arranged between the water distributor and the aluminum layer; the water distributor is also connected with a water outlet pipe.
8. The device for pretreating refractory organic wastewater by using pure aluminum materials as claimed in claim 7, wherein the aluminum layer comprises a multi-layer porous aluminum structure, hollow spherical aluminum and a suspended membrane-shaped aluminum structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122244802.5U CN215906051U (en) | 2021-09-15 | 2021-09-15 | Device for pretreating refractory organic wastewater by pure aluminum material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122244802.5U CN215906051U (en) | 2021-09-15 | 2021-09-15 | Device for pretreating refractory organic wastewater by pure aluminum material |
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| CN202122244802.5U Active CN215906051U (en) | 2021-09-15 | 2021-09-15 | Device for pretreating refractory organic wastewater by pure aluminum material |
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Denomination of utility model: A device for pretreatment of refractory organic wastewater with pure aluminum material Effective date of registration: 20221010 Granted publication date: 20220225 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: HYNAR WATER Group Corp. Registration number: Y2022980017808 |
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