CN114684980A - Sewage treatment method - Google Patents
Sewage treatment method Download PDFInfo
- Publication number
- CN114684980A CN114684980A CN202210485937.7A CN202210485937A CN114684980A CN 114684980 A CN114684980 A CN 114684980A CN 202210485937 A CN202210485937 A CN 202210485937A CN 114684980 A CN114684980 A CN 114684980A
- Authority
- CN
- China
- Prior art keywords
- sewage
- wastewater
- ion exchange
- removal
- exchange resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 47
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 25
- 239000001301 oxygen Substances 0.000 claims abstract description 25
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 24
- 239000011574 phosphorus Substances 0.000 claims abstract description 24
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 23
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 23
- 238000001179 sorption measurement Methods 0.000 claims abstract description 21
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000000909 electrodialysis Methods 0.000 claims abstract description 10
- 230000002378 acidificating effect Effects 0.000 claims abstract description 5
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 5
- 238000000746 purification Methods 0.000 claims abstract description 5
- 238000004332 deodorization Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 239000002351 wastewater Substances 0.000 claims description 13
- 150000002500 ions Chemical class 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 238000005342 ion exchange Methods 0.000 claims description 9
- 150000001450 anions Chemical class 0.000 claims description 7
- 238000005189 flocculation Methods 0.000 claims description 5
- 230000016615 flocculation Effects 0.000 claims description 5
- 238000004065 wastewater treatment Methods 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 125000003277 amino group Chemical group 0.000 claims description 4
- 238000011033 desalting Methods 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010612 desalination reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- -1 salt compounds Chemical class 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- 239000004966 Carbon aerogel Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000388 Polyphosphate Polymers 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 231100001240 inorganic pollutant Toxicity 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 125000002467 phosphate group Chemical class [H]OP(=O)(O[H])O[*] 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000009615 deamination Effects 0.000 description 1
- 238000006481 deamination reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 229910052816 inorganic phosphate Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Abstract
The invention relates to a sewage treatment method, which comprises six steps of pretreatment through a grid, introduction of dissolved oxygen, removal of colored group heavy metals by an electro-adsorption system, desalination of organic matters by an electrodialysis system, removal of ammonia nitrogen by acidic ion exchange resin and removal of total phosphorus by basic ion exchange resin, and the invention comprehensively and synergistically uses various sewage treatment processes, and has the following beneficial effects: the sewage treatment efficiency and quality are improved, the stability is high, the implementation is convenient, no odor is generated in the treatment process, no secondary pollution is generated to the environment, and the effects of deodorization, decoloration and purification are achieved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of sewage purification, in particular to a sewage treatment method.
[ background of the invention ]
Sewage treatment refers to a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. In recent years, with the development of industry, the importance of sewage treatment to environmental management has been gradually emphasized. Because the sewage contains a large amount of harmful organic matters, heavy metals, soluble salts and other impurities, the sewage is often required to be treated by complex working procedures, and the effect is difficult to satisfy. For example, the biochemical method used in the prior art for treating sewage has the following technical problems: the treatment effect is unstable and is greatly influenced by natural factors such as seasons, temperature, illumination and the like; the odor is easy to be emitted, and the sanitary condition is not good; high treatment cost and low treatment efficiency. Therefore, it is important to provide a sewage treatment method which has high stability, high treatment efficiency, low cost and no pollution such as odor.
[ summary of the invention ]
The invention aims to solve the defects in the prior art, and provides a sewage treatment method, which has the advantages of high treatment efficiency, convenience in implementation, no secondary pollution and high instability of sewage treatment by using biological and chemical products through comprehensive cooperation of various sewage treatment methods.
In order to achieve the purpose, the invention adopts the technical scheme that: a sewage treatment method comprises the following steps:
s1, pretreating sewage to be treated by a pretreatment system;
s2, feeding the pretreated sewage into an oxygen dissolving device, and dissolving dissolved oxygen into the sewage through an aeration device;
s3, introducing the sewage passing through the oxygen dissolving system in the S2 into an electric adsorption system, adsorbing and converting ions and charged particles in the water by using a charged electrode, and reacting in the sewage to remove colored groups, particle groups and heavy metals so as to achieve deodorization, decoloration and purification;
s4, introducing the sewage after passing through the S3 electric adsorption system into an electrodialysis system to remove compounds containing salts;
s5, introducing the sewage which passes through the S4 electrodialysis system into acidic ammonia nitrogen removal ion exchange resin, and removing ammonia nitrogen in the water through adsorption, transfer, bond removal and exchange;
s6, the sewage after the S5 enters alkaline total phosphorus removal ion exchange resin, and total phosphorus in the water is removed through adsorption, transfer, bond removal and exchange;
further, in the above-mentioned case,
in the S1 process, the pretreatment adopts a grating to remove large suspended matters in the sewage.
Further, in the above-mentioned case,
and in the S2 process, the content of the introduced dissolved oxygen is adjusted through a valve, and the content of the introduced dissolved oxygen is adjusted according to the content of the electrolyzed oxygen in the sewage.
Further, in the above-mentioned case,
in the S3 process, the voltage of the power supply applied to each pair of electrodes in the electric adsorption system is 1-10V, and the current is 10-110A.
Further, in the above-mentioned case,
the condition pH value in the S2, S5 and S6 ion exchange process is 6-9.
Further, in the above-mentioned case,
the S4 desalting process can also adopt a variable frequency electric flocculation system for desalting;
further, in the above-mentioned case,
the condition temperature in the S5 and S6 ion exchange process can be 8-12 ℃.
Further, in the above-mentioned case,
the basic total phosphorus removal ion exchange resin in the S6 process is special grade polystyrene acrylic acid strongly basic anion phosphorus removal exchange resin with type 1 quaternary amine functional group.
Further, in the above-mentioned case,
the removal rate of the ion exchange resin of S5 and S6 for removing ammonia nitrogen and total phosphorus is in direct proportion to the content of ammonia nitrogen and total phosphorus in sewage and the volume length of resin filled.
Further, in the above-mentioned case,
and the S6 process further comprises the step of taking sewage at the liquid outlet for detection, wherein the sewage is discharged through the liquid outlet when reaching the standard, and the sewage continues to be treated when not reaching the standard.
Compared with the prior art, the invention has the beneficial effects that:
the invention combines the sewage treatment methods of dissolved oxygen, electric adsorption, electrodialysis, ion exchange and the like for comprehensive use, improves the sewage treatment efficiency and quality, has high stability and convenient implementation, does not generate odor in the treatment process, and does not generate secondary pollution to the environment.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the technical solutions related to the embodiments of the present invention will be briefly described below with reference to the accompanying drawings, and it is apparent that the drawings described in the present specification are only some possible embodiments of the present invention, and it is obvious for a person skilled in the art to obtain other drawings identical or similar to the technical solutions of the present invention based on the following drawings without any creative efforts.
FIG. 1 is a flow diagram of a wastewater treatment process according to an embodiment of the present invention;
FIG. 2 is a flow chart of a wastewater treatment process according to another embodiment of the present invention;
[ detailed description ] embodiments
The technical solutions described in the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments, and it is obvious that the embodiments described in this specification are only a part of possible technical solutions of the present invention, and other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention should be considered as falling within the protection scope of the present invention.
The sewage treatment method of the invention integrates the sewage treatment methods of dissolved oxygen, electro-adsorption, electrodialysis, ion exchange and the like for use, referring to a flow chart of the sewage treatment method in an embodiment of the attached figure 1, the sewage treatment method of the invention comprises six steps of pretreatment, dissolved oxygen introduction, an electro-adsorption system, electrodialysis system desalination, ion exchange resin deamination and denitrification, and ion exchange resin total phosphorus removal, and the specific implementation steps are as follows:
the method comprises the following steps: and (4) pretreating the sewage to be treated by a pretreatment system.
The pretreatment method aims to remove large-particle solid pollutants in a suspension state in the sewage and reduce the load on subsequent equipment. The physical treatment method is mainly adopted for pretreatment, the pretreatment treatment facilities comprise but are not limited to a grating, a grit chamber, a screen and a sand-water separator, in a preferred embodiment, the grating is selected as the pretreatment facility, two gratings are arranged, the spacing of the gratings is selected to be suitable for the actual situation, sewage firstly passes through the coarse grating and then passes through the fine grating, suspended matters and solid pollutants in the sewage are intercepted, and the subsequent sewage treatment system is prevented from being damaged.
Step two: introducing dissolved oxygen into the sewage.
The dissolved oxygen refers to the content of free oxygen in water, and after pretreatment, the invention injects the dissolved oxygen into the sewage through an aeration device, the pH value is controlled to be kept between 6 and 9, the content of the injected dissolved oxygen is adjusted according to the content of electrolytic oxygen in the sewage, and the content of the dissolved oxygen in the sewage is preferably controlled to be 3 mg/L.
Step three: electric adsorption system
In the process of attaching the electric clothes, raw water enters the two electric plates from one end and flows out from the other end, the raw water is acted by an electric field when flowing between the cathode and the anode, and charged particles in the water migrate to the electrodes with opposite charges respectively, are adsorbed by the electrodes and are stored in the double-electrode layer, and are enriched and concentrated on the surfaces of the electrodes along with the adsorption of the charged particles by the electrodes, so that the separation of water is finally realized, and dissolved substances in the water, such as glue chemical impurities, salts and emulsions, can be remained on the surfaces of the electrodes, thereby achieving the purpose of purifying and desalinating the water.
The sewage circulates through the electric adsorption system at a certain flow speed, the voltage of the electric adsorption system can be stabilized at 1-10V, and the current is 10-110A. Under the action of electric field force generated by voltage, anions and cations in the sewage respectively migrate to the positive electrode and the negative electrode and form an electric double layer on the porous carbon material, the porous carbon material can comprise activated carbon, carbon aerogel, activated carbon fiber, graphene and compounds, mixtures or adulterants of the activated carbon, the carbon aerogel, the activated carbon fiber and the graphene, and colored groups, particle groups and heavy metals are removed by reaction in the sewage, so that deodorization, decoloration and purification are achieved;
step four: desalination system
The first embodiment is as follows: desalting by electrodialysis.
The electrodialysis desalination working process of the invention comprises the following steps: the electrodialyzer is characterized in that a plurality of positive membranes and negative membranes are alternately arranged in the electrodialyzer and are divided into small water chambers, when raw water enters the small chambers, ions in a solution are directionally migrated under the action of a direct current electric field, so that the ions are separated and concentrated, water is purified, the positive membranes only allow positive ions to pass through and retain negative ions, the negative membranes only allow negative ions to pass through and retain positive ions, a part of the small chambers are changed into fresh water chambers with few ions, effluent is called fresh water, the small chambers adjacent to the fresh water chambers are changed into concentrated water chambers for accumulating a large amount of ions, and the effluent is called concentrated water;
example two: frequency conversion electric flocculation system
In another embodiment, the desalination system may also be an electric flocculation reaction system, which generates an electrochemical reaction by means of an external variable frequency pulse power supply to convert electric energy into chemical energy, and performs an oxidation-reduction reaction on organic or inorganic pollutants in the wastewater to further coagulate and remove the pollutants, wherein under the action of an electric field, the anode generates electrons to form a micro-flocculant, for example, an iron or aluminum anode, the micro-flocculant is aluminum or iron hydroxide, particles, pollutants and the like suspended in water lose stability under the action of the flocculant, and the destabilized pollutant particles and the micro-flocculant collide with each other, so that the organic or inorganic pollutants in the wastewater are cohered and coagulated to be separated from the wastewater.
The electrode reaction is as follows (taking an aluminum electrode as an example):
aluminum anode A1-3e → Al3e +
Under alkaline conditions: a13e + +30H- → A1(OH)3
Under acidic conditions: a13e + +3H20 → Al (0H)3+3H +
In addition, the electrolysis electrons of water also release hydrogen and oxygen:
2H20-4e→02+4H+
2H20+2e→H2+20H-
the products of the electrolytic reaction of the electric flocculation system are only ions, no oxidant or reducer is needed to be added, no or little pollution is generated to the environment, various harmful pollutants such as salt compounds and the like in the wastewater can be effectively removed, and bacteria and viruses in the wastewater can be killed.
Step five: removal of ammonia nitrogen by ion exchange resin
When sewage containing ammonia nitrogen enters the resin, the resin contains cations and can exchange with free ammonia and ammonium ions in water to adsorb the free ammonia and the ammonium ions in the water into the ion exchange resin, and the ion exchange resin internally contains special electronic ions to carry out electronic exchange on the free ammonia and the ammonium ions entering the resin so as to release sodium ions and hydrogen ions which are harmless to a human body, thereby achieving the aim of removing the ammonia nitrogen.
The ion exchange resin of the invention adopts acidic ammonia nitrogen removal ion exchange resin, ammonia nitrogen in water is removed after four processes of adsorption, transfer, bond removal and exchange, pH is controlled within the range of 6-9 in the reaction process, the pH is preferably 7, namely, the reaction is carried out under a neutral condition, and the temperature is controlled within the range of 8-12 ℃ in the ion exchange process, and the temperature is preferably 10 ℃. The removal rate of the ion exchange resin for removing ammonia nitrogen is in direct proportion to the content of ammonia nitrogen in sewage and the volume length of resin filled.
Step six: removal of total phosphorus by ion exchange resin
Phosphorus is generally present in wastewater as low-concentration phosphate salts, including organic phosphates, inorganic phosphates (primarily orthophosphates), and polyphosphates, with orthophosphates and polyphosphates being the predominant species. At present, most sewage treatment in China uses a chemical phosphorus removal method and a biological method, the invention adopts an ion exchange method, and the ion exchange resin adopted by the invention is special grade polystyrene acrylic acid strongly-alkaline anion phosphorus removal exchange resin containing 1 type quaternary ammonium functional groups with excellent physical and chemical stability, and is a special phosphorus removal resin. Anion in aqueous solution (C1)-、HCO32-Etc.) and anion exchange resin (containing basic groups such as quaternary ammonium group EN (CH3)30HJ, amino group (-N2) or imino group (-NH 2), etc., and easily generating OH in water-OH on Ionic) of-Exchange is carried out, anions in the water are transferred to the resin and OH on the resin-Exchange to water.
The ion exchange resin of the invention removes ammonia nitrogen by adopting special grade polystyrene acrylic acid strongly basic anion phosphorus removal exchange resin with 1 type quaternary amine functional group, and after four processes of adsorption, transfer, bond removal and exchange, the total phosphorus in water is removed, the pH is controlled within the range of 6-9 in the reaction process, the pH is preferably 7, namely, the reaction is carried out under the neutral condition, and the temperature is controlled within the range of 8-12 ℃ in the ion exchange process, and the temperature is preferably 10 ℃. The total phosphorus removal rate of the ion exchange resin is in direct proportion to the total phosphorus content in the sewage and the volume length of the resin. Aiming at other chemical components in the sewage, the ion exchange resin in the steps S5 and S6 of the invention changes the catalytic particles, and the other chemical components in the sewage are removed through adsorption, transfer, bond removal and exchange in the same working process.
And after total phosphorus is removed, taking sewage from the liquid outlet for detection, discharging the sewage through the liquid outlet after the sewage reaches a sewage discharge standard, and returning to the step of dissolving oxygen for continuous treatment after the sewage does not reach the standard.
The above description is only a preferred embodiment of the present invention, but it is not limited to the applications listed in the description and the embodiments, and it can be fully applied to various fields suitable for the present invention, and for those skilled in the art, several modifications and additions can be made without departing from the method of the present invention, and these modifications and additions should be regarded as the protection scope of the present invention.
Claims (10)
1. A sewage treatment method is characterized by comprising the following steps:
s1, pretreating sewage to be treated by a pretreatment system;
s2, feeding the pretreated sewage into an oxygen dissolving device, and dissolving dissolved oxygen into the sewage through an aeration device;
s3, introducing the sewage passing through the oxygen dissolving system in the S2 into an electric adsorption system, adsorbing and converting ions and charged particles in the water by using a charged electrode, and reacting in the sewage to remove colored groups, particle groups and heavy metals so as to achieve deodorization, decoloration and purification;
s4, introducing the sewage passing through the S3 electro-adsorption system into an electrodialysis system to remove compounds containing salts;
s5, introducing the sewage which passes through the S4 electrodialysis system into acidic ammonia nitrogen removal ion exchange resin, and removing ammonia nitrogen in the water through adsorption, transfer, bond removal and exchange;
s6, the sewage after S5 enters alkaline total phosphorus removal ion exchange resin, total phosphorus in the water is removed through adsorption, transfer, bond removal and exchange, and the sewage is discharged after reaching the standard.
2. The wastewater treatment method according to claim 1, wherein the pretreatment in the S1 process is to remove large suspended matters in wastewater by using a grid.
3. The method of claim 1, wherein the amount of the dissolved oxygen introduced is adjusted by a valve during the step S2, and the amount of the dissolved oxygen introduced is adjusted according to the amount of the electrolyzed oxygen contained in the wastewater.
4. The wastewater treatment method according to claim 1, wherein the voltage applied to each pair of electrodes in the electro-adsorption system in the S3 process is 1-10V, and the current is 10-110A.
5. The method of claim 1, wherein the ion exchange process conditions of S2, S5 and S6 are pH 6-9.
6. The wastewater treatment method according to claim 1, wherein the S4 process is further desalting by a variable frequency electric flocculation system.
7. The method of claim 1, wherein the temperature of the S5 and S6 ion exchange process is 8-12 ℃.
8. The method of claim 1, wherein the basic total phosphorus removal ion exchange resin in the S6 process is a special grade polystyrene acrylic acid strongly basic anion phosphorus removal exchange resin with type 1 quaternary amine functional groups.
9. The method of claim 1, wherein the removal rate of ammonia nitrogen and total phosphorus from the ion exchange resin of S5 and S6 is proportional to the content of ammonia nitrogen and total phosphorus in the wastewater and the volume length of the resin.
10. The method of claim 1, wherein the step S6 further comprises detecting the wastewater at the drain port, discharging the wastewater through the drain port if the wastewater is within the standard, and continuing the treatment if the wastewater is not within the standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210485937.7A CN114684980A (en) | 2022-05-06 | 2022-05-06 | Sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210485937.7A CN114684980A (en) | 2022-05-06 | 2022-05-06 | Sewage treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114684980A true CN114684980A (en) | 2022-07-01 |
Family
ID=82145215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210485937.7A Pending CN114684980A (en) | 2022-05-06 | 2022-05-06 | Sewage treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114684980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231781A (en) * | 2022-08-08 | 2022-10-25 | 阳城县安阳污水处理有限公司 | Sewage treatment process with low sludge yield |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4676908A (en) * | 1984-11-19 | 1987-06-30 | Hankin Management Services Ltd. | Waste water treatment |
| CN108358363A (en) * | 2018-03-30 | 2018-08-03 | 许欠欠 | A kind of deep treatment method of organic sewage with high salt |
-
2022
- 2022-05-06 CN CN202210485937.7A patent/CN114684980A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4676908A (en) * | 1984-11-19 | 1987-06-30 | Hankin Management Services Ltd. | Waste water treatment |
| CN108358363A (en) * | 2018-03-30 | 2018-08-03 | 许欠欠 | A kind of deep treatment method of organic sewage with high salt |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231781A (en) * | 2022-08-08 | 2022-10-25 | 阳城县安阳污水处理有限公司 | Sewage treatment process with low sludge yield |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102674632B (en) | Garbage leachate zero-emission reuse treatment method | |
| CN206014571U (en) | A kind of process complete set of equipments of the nickeliferous waste liquid of PCB factories | |
| CN104016547A (en) | Advanced treatment and zero emission process for coking wastewater | |
| CN105314773A (en) | Wet desulphurization wastewater recycling method and apparatus thereof | |
| CN203807291U (en) | Power plant desulfurization wastewater zero-emission treatment and reusing device | |
| CN103936106A (en) | Electrochemical synchronous nitrogen and phosphorus removal apparatus and municipal sewage treatment method | |
| CN105417895A (en) | Membrane method and super magnetic coagulation combined water treatment technology | |
| CN203878007U (en) | Power plant desulfurization wastewater treatment device | |
| CN102329048B (en) | Method for treating wastewater produced during chemical synthesis of vitamin B6 | |
| CN110282783A (en) | A kind of processing system and processing method of phosphorus ammonium wastewater from chemical industry | |
| CN113003846A (en) | Zero-emission treatment process and system for sewage with high salt content and high COD (chemical oxygen demand) | |
| CN102976537B (en) | Comprehensive physical and chemical treatment device and method of organic silicon wastewater | |
| CN216998076U (en) | Industrial wastewater treatment system | |
| CN210176671U (en) | High-salt high-concentration degradation-resistant organic wastewater treatment equipment | |
| CN105060411A (en) | Internal electrolysis-electric flocculation method for processing phosphor-containing wastewater | |
| CN114684980A (en) | Sewage treatment method | |
| CN101618905A (en) | Method for treating phosphoric wastewater through ozone-enhanced electrocoagulation | |
| CN103819036B (en) | Treating method for desulfurization waste water of power plant | |
| CN208545167U (en) | Capacitive adsorption device | |
| CN109704505A (en) | A kind of plasma effluent purification method | |
| CN109851160A (en) | A kind of advanced treatment method for sewage water | |
| CN214612016U (en) | Deep water purification device for realizing magnetic coagulation sedimentation by utilizing magnetic resin | |
| CN110683687A (en) | Method and device for improving quality of reclaimed water | |
| CN103086483A (en) | Water purification method and oil extraction process comprising water purification method | |
| CN208545166U (en) | A kind of water treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220701 |