CN222250306U - Treatment system for phase change material production wastewater - Google Patents
Treatment system for phase change material production wastewater Download PDFInfo
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- CN222250306U CN222250306U CN202323612679.3U CN202323612679U CN222250306U CN 222250306 U CN222250306 U CN 222250306U CN 202323612679 U CN202323612679 U CN 202323612679U CN 222250306 U CN222250306 U CN 222250306U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 59
- 239000012782 phase change material Substances 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 49
- 230000003647 oxidation Effects 0.000 claims abstract description 47
- 239000012528 membrane Substances 0.000 claims abstract description 25
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000003197 catalytic effect Effects 0.000 claims abstract description 18
- 239000010802 sludge Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000005416 organic matter Substances 0.000 claims abstract description 7
- 238000007142 ring opening reaction Methods 0.000 claims abstract description 6
- 241000894006 Bacteria Species 0.000 claims description 14
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 238000005273 aeration Methods 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
- 230000001590 oxidative effect Effects 0.000 claims description 11
- 239000007800 oxidant agent Substances 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- 239000001632 sodium acetate Substances 0.000 claims description 3
- -1 permanganate Chemical compound 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
- 150000003384 small molecules Chemical class 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 54
- 229910021529 ammonia Inorganic materials 0.000 abstract description 27
- 238000000034 method Methods 0.000 abstract description 10
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 7
- 238000004065 wastewater treatment Methods 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007034 nitrosation reaction Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
本实用新型涉及废水处理技术领域，具体而言涉及相变材料生产废水的处理系统，包括预处理系统、生物处理系统以及污泥脱水系统；所述预处理系统包括催化氧化设备以及脱氮反应器，所述催化氧化设备用于促使废水中长链有机物发生开环、断链反应，所述脱氮反应器用于与废水中的氨氮反应。本实用新型根据废水中的污染物特点，采用“精密过滤+催化氧化+除氮”工艺进行预处理，一方面降低废水中的有机污染物浓度并使其转化为短链低分子有机物，有利于后续生物处理系统进一步处理；另外，采用脱氮反应器进行预脱氮能降低后续系统处理负荷；生物处理阶段采用“膜生物反应器+短程硝化反应器+厌氧氨氧化反应器”组合工艺进行处理，最终实现达标排放。
The utility model relates to the technical field of wastewater treatment, and specifically to a treatment system for phase change material production wastewater, including a pretreatment system, a biological treatment system, and a sludge dewatering system; the pretreatment system includes a catalytic oxidation device and a denitrification reactor, the catalytic oxidation device is used to induce the long-chain organic matter in the wastewater to undergo ring-opening and chain-breaking reactions, and the denitrification reactor is used to react with ammonia nitrogen in the wastewater. According to the characteristics of pollutants in the wastewater, the utility model adopts the "precision filtration + catalytic oxidation + denitrification" process for pretreatment, which, on the one hand, reduces the concentration of organic pollutants in the wastewater and converts them into short-chain low-molecular organic matter, which is conducive to further treatment by the subsequent biological treatment system; in addition, the use of a denitrification reactor for pre-denitrification can reduce the subsequent system processing load; the biological treatment stage adopts a "membrane bioreactor + short-range nitrification reactor + anaerobic ammonia oxidation reactor" combined process for treatment, and finally achieves standard discharge.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a treatment system for wastewater in phase change material production.
Background
The phase change material or latent heat energy storage material can utilize the phase change of the material itself to passively absorb or release a large amount of heat from the surrounding environment, so as to achieve the purpose of heat management. The phase change material is widely applied to the fields of optics, electronic information, cosmetics, biomedicine, chemical analysis and the like. The phase change material is mainly used for high molecular organic matters, alkane organic matters and other functional materials in the production process. Therefore, the organic pollutants and ammonia nitrogen in the production wastewater have high concentration and are difficult to biodegrade, and the wastewater treatment difficulty is high.
For wastewater with high content of refractory organic matters and high content of ammonia nitrogen, a pretreatment and complete nitrification and denitrification biological treatment process is generally adopted for treatment. The process route has the problems of high operation cost and low organic matter and ammonia nitrogen removal efficiency, and the aim of the application is to improve the pretreatment efficiency, reduce the load entering a biological treatment system, reduce the energy consumption and improve the organic matter and ammonia nitrogen treatment efficiency.
Disclosure of utility model
Aiming at the technical problems of organic wastewater treatment in the prior art, the utility model provides a treatment system of phase change material production wastewater, which comprises a pretreatment system, a biological treatment system and a sludge dewatering system;
The pretreatment system comprises catalytic oxidation equipment and a denitrification reactor, wherein the catalytic oxidation equipment is used for promoting long-chain organic matters in the wastewater to carry out ring opening and chain breaking reactions to generate micromolecular organic matters, and the denitrification reactor is used for reacting with ammonia nitrogen in the wastewater to reduce the concentration of the ammonia nitrogen in the wastewater;
The biological treatment system comprises a membrane bioreactor, a short-cut nitrification reactor and an anaerobic ammonia oxidation reactor, and wastewater is treated by the membrane bioreactor, the short-cut nitrification reactor and the anaerobic ammonia oxidation reactor in sequence;
a sludge dewatering system;
wherein an intermediate water tank is arranged in front of the membrane bioreactor, the discharge end of the denitrification reactor is connected to the intermediate water tank, the sludge generated in the membrane bioreactor is discharged into the sludge dewatering system, and the filtrate generated by the sludge dewatering system flows back to the intermediate water tank.
Preferably, an aeration device is arranged in the membrane bioreactor, and the aeration device is arranged to enable dissolved oxygen of wastewater in the membrane bioreactor to be 2-4mg/L.
Preferably, an aeration device is arranged in the short-cut nitrification reactor, and the aeration device is arranged to enable dissolved oxygen of wastewater in the short-cut nitrification reactor to be 0.5-1.0mg/L.
Preferably, a carbon source adding system is arranged in the anaerobic ammonia oxidation reactor and used for culturing anaerobic ammonia oxidation bacteria, so that nitrite entering the anaerobic ammonia oxidation reactor reacts with ammonia nitrogen to generate nitrogen.
Preferably, the carbon source added by the carbon source adding system is methanol or sodium acetate.
Preferably, the short-cut nitrification reactor is used for converting 50% of ammonia nitrogen in the wastewater into nitrite.
Preferably, the catalytic oxidation equipment is provided with an oxidant adding system, and the oxidant added by the oxidant adding system is one or more of hydrogen peroxide, permanganate and persulfate.
Preferably, the inlet of the catalytic oxidation device is provided with a filtering device, the filtering precision of the filtering device is 0.1-0.45 μm, and the filtering device is used for separating fine suspended particles in the wastewater.
Compared with the prior art, the utility model has the advantages that:
According to the characteristics of pollutants in the wastewater, the pretreatment is carried out by adopting a process of precise filtration, catalytic oxidation and nitrogen removal, so that on one hand, the concentration of organic pollutants in the wastewater is reduced and is converted into short-chain low-molecular organic matters, which is beneficial to further treatment of a subsequent biological treatment system;
The biological treatment stage adopts a combined process of a membrane bioreactor, a short-cut nitrification reactor and an anaerobic ammoxidation reactor for treatment. Firstly, a membrane bioreactor is adopted to carry out carbonization reaction, so that the concentration of organic pollutants in wastewater is reduced, the running stability of a system is improved, secondly, 50% ammonia nitrogen is converted into nitrite through a short-cut nitrification reactor, the energy consumption of the system is reduced due to lower aeration quantity, sufficient nitrite is provided for anaerobic ammonia oxidation, and the anaerobic ammonia oxidation reactor is used for culturing anaerobic ammonia oxidation bacteria through adding a carbon source, so that the high-efficiency denitrification effect of the anaerobic ammonia oxidation bacteria is fully exerted.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the utility model will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a phase change material process wastewater treatment system according to the present utility model.
Detailed Description
For a better understanding of the technical content of the present utility model, specific examples are set forth below, along with the accompanying drawings.
Referring to fig. 1, the utility model provides a treatment system for wastewater produced by phase change materials, which comprises a pretreatment system 10, a biological treatment system 20 and a sludge dewatering system 30, wherein the pretreatment system 10 aims at removing suspended matters in the wastewater, reducing ammonia nitrogen concentration and promoting ring-opening and chain-breaking reactions of long-chain organic matters in the wastewater.
Specifically, the pretreatment system 10 includes a catalytic oxidation device 13 and a denitrification reactor 14, the catalytic oxidation device 13 is used for promoting the ring-opening and chain-breaking reactions of long-chain organic matters in the wastewater, and the denitrification reactor 14 is used for reacting with ammonia nitrogen in the wastewater to reduce the concentration of ammonia nitrogen in the wastewater.
The catalytic oxidation device 13 utilizes an oxidant feeding system to feed an oxidant and a catalyst into the device, the oxidant and the catalyst in the device are utilized to make the organic matters in the wastewater undergo ring-opening and chain-breaking reactions, and the denitrification reactor 14 is internally added with the denitrification agent and the auxiliary agent to react with ammonia nitrogen in the wastewater, so that the ammonia nitrogen concentration in the wastewater is reduced, and the further treatment of the subsequent biological treatment system 20 is facilitated.
Optionally, the oxidant added to the catalytic oxidation device 13 is one or more of hydrogen peroxide, permanganate and persulfate.
In a preferred embodiment, the inlet of the catalytic oxidation device 13 is provided with a filter device 12, the filter device 12 having a filter accuracy of 0.1-0.45 μm for separating fine suspended particles in the wastewater.
Further, an adjusting tank 11 is arranged in front of the filtering device 12, and the adjusting tank 11 is used for adjusting the water quality and the water quantity of the wastewater inlet water.
Further, the biological treatment system 20 comprises a membrane bioreactor 22, a short-cut nitrification reactor 23 and an anaerobic ammonia oxidation reactor 24, and wastewater is treated by the membrane bioreactor 22, the short-cut nitrification reactor 23 and the anaerobic ammonia oxidation reactor 24 in sequence.
In an alternative embodiment, the membrane bioreactor 22 controls 2-4 mg/L of dissolved oxygen under aeration conditions, utilizes aerobic microorganisms to adsorb and degrade organic pollutants in the wastewater, and the short-cut nitrification reactor 23 controls 0.5-1.0 mg/L of dissolved oxygen under aeration conditions, and utilizes nitrite bacteria to convert 50% of ammonia nitrogen in the wastewater into nitrite.
Furthermore, the anaerobic ammonia oxidation reactor is provided with a carbon source adding system, a small amount of carbon source is added into the anaerobic ammonia oxidation reactor to cultivate anaerobic ammonia oxidation bacteria, and nitrite produced by the short-cut nitrification reactor is reacted with ammonia nitrogen in the raw wastewater to generate nitrogen, so that the total nitrogen in the wastewater is removed, and finally the standard emission is realized.
Because the organic matter concentration is too high, the short-cut nitrification process in the short-cut nitrification reactor 23 and the anaerobic ammonia oxidation in the anaerobic ammonia oxidation reactor 24 are both adversely affected, so that the membrane bioreactor 22 is adopted to firstly carry out carbonization reaction to reduce the concentration of organic pollutants in the wastewater, and the running stability of the system is improved.
Secondly, the ratio of nitrite to ammonia nitrogen in wastewater required by the anaerobic ammonia oxidation reaction is close to 1:1, and the concentration of nitrous acid in industrial wastewater is usually low and does not have the condition of the anaerobic ammonia oxidation reaction, so that the shortcut nitrification reactor 23 is arranged behind the membrane bioreactor 22, 50% of ammonia nitrogen is converted into nitrite by controlling the dissolved oxygen to be 0.5-1.0 mg/L, the energy consumption of the system is reduced due to lower aeration quantity, and meanwhile, sufficient nitrite is provided for the anaerobic ammonia oxidation.
Furthermore, because the anammox bacteria grow slowly and the generation period is long, the organic matters with a certain concentration can promote the synergistic denitrification effect between the anammox bacteria and the denitrifying bacteria, and the excessive organic matters can greatly multiply the heterotrophic denitrifying bacteria, and form a substrate competition relationship with the anammox bacteria, so that the anammox bacteria are limited in growth.
Therefore, a small amount of carbon source is added to the anaerobic ammonia oxidation reactor 24 to culture anaerobic ammonia oxidation bacteria, so that the denitrification effect of the anaerobic ammonia oxidation reactor is fully exerted.
Optionally, the carbon source is one of methanol, sodium acetate or other organic carbon sources.
Further, an intermediate water tank 21 is provided before the membrane bioreactor 22, the discharge end of the denitrification reactor 14 is connected to the intermediate water tank 21, the sludge generated in the membrane bioreactor 22 is discharged into a sludge dewatering system 30, and the filtrate generated in the sludge dewatering system 30 is returned to the intermediate water tank 21.
Thus, the wastewater from the pretreatment system 10 enters the intermediate water tank 21, is mixed with the filtrate of the sludge dewatering system 30, sequentially enters the membrane bioreactor 22, the short-cut nitrification reactor 23 and the anaerobic ammoxidation reactor 24, and is subjected to carbonization reaction, nitrosation reaction and anaerobic ammoxidation reaction respectively, and finally the effluent reaches the national discharge standard and enters the next-stage sewage treatment plant for treatment.
Wherein, the residual supernatant fluid of the sludge dewatering system 30 enters an intermediate water tank for cyclic treatment, and the dewatered sludge is sent to a qualification unit for treatment.
According to the characteristics of pollutants in the wastewater, the pretreatment is performed by adopting a process of 'precise filtration + catalytic oxidation + nitrogen removal', so that on one hand, the concentration of organic pollutants in the wastewater is reduced and is converted into short-chain micromolecular organic matters, which is beneficial to further treatment of a subsequent biological treatment system;
the biological treatment stage adopts a combined process of a membrane bioreactor, a short-cut nitrification reactor and an anaerobic ammoxidation reactor for treatment. Firstly, a membrane bioreactor is adopted to carry out carbonization reaction, the running stability of a system is improved, 50% ammonia nitrogen is converted into nitrite through a short-cut nitrification reactor, on one hand, the energy consumption is reduced, on the other hand, sufficient nitrite is provided for anaerobic ammonia oxidation, and the anaerobic ammonia oxidation reactor cultures anaerobic ammonia oxidation bacteria by adding a carbon source, so that the denitrification effect of the anaerobic ammonia oxidation reactor is fully exerted.
While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323612679.3U CN222250306U (en) | 2023-12-28 | 2023-12-28 | Treatment system for phase change material production wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323612679.3U CN222250306U (en) | 2023-12-28 | 2023-12-28 | Treatment system for phase change material production wastewater |
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| Publication Number | Publication Date |
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| CN222250306U true CN222250306U (en) | 2024-12-27 |
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| CN202323612679.3U Active CN222250306U (en) | 2023-12-28 | 2023-12-28 | Treatment system for phase change material production wastewater |
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