CN1165491C - Coupling field oxidation sewage treatment method - Google Patents
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- CN1165491C CN1165491C CNB01145251XA CN01145251A CN1165491C CN 1165491 C CN1165491 C CN 1165491C CN B01145251X A CNB01145251X A CN B01145251XA CN 01145251 A CN01145251 A CN 01145251A CN 1165491 C CN1165491 C CN 1165491C
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Abstract
The present invention relates to a sewage processing method by oxidation of coupled fields, which has the technical scheme that sewage enters a first coupled field oxidation pond for oxidation after magnetization processing, primary coagulation reaction and precipitation for suspended substance removal; oxidated water is then coupled for oxidation through coagulation reaction and precipitation; the coupled oxidation is carried out for oxidation in a coupled field combined by at least two of a magnetic field, an ultrasonic wave and ultraviolet light by a mixed oxidizing agent containing O<->, O2, O and O3. The method has the advantages of good treatment effect, high removal rate of COD, BOD, SS, N, P, color, foreign odor, etc., wide use condition and strong impact resistance; the present invention can be used for degrading and removing organic substances and heavy metal which are not easily biodegraded.
Description
Technical field
The invention belongs to sewage disposal technology, particularly the lotus root cooperation in UV-light, ultrasonic wave, magnetic field with under carry out oxidation with oxygen, ozone method dispose of sewage.
Background technology
China's Freshwater resources serious water shortage, its occupancy volume per person is 1/4 of a world average only, distributed pole is inhomogeneous, the northern area serious water shortage.I cross surplus the sewage annual emissions 400 hundred million tons, and processing rate is lower, and is very serious to water pollution, sewage disposal task also very heavy (State Bureau of Environmental Protection Chinese environmental communique 2000).Qualified discharge after the sewage disposal, this is the recent important goal of China environmental protection; And recycling sewage generated by making has realized that sewage recycling is one of important channel that solves China's shortage of fresh water.At present, the mainstream technology of sewage disposal still is various biological process technologies, and various chemical methods mainly are to be used for some high densitys, difficult degradation, poisonous, harmful waste water processing.The treatment process of recycling sewage generated by making mainly is that the water outlet with biological treatment (secondary) is the water source, carries out coagulation and filtration and handles (three grades), requires to adopt methods such as membrane separation technique, absorption, ion-exchange, chemical oxidation to carry out advanced treatment according to water again.The sterilization of regeneration effluent water mainly is with the chemical oxidation sterilizing of chlorine series, also can adopt ozone, ultraviolet ray, ultrasonic sterilization (Wang Dahui etc., water treatment new technology Chemical Industry Press, 2001.5; Zhang Zijie, drainage system, China Construction Industry Press, 2000.6; Yan Xishi etc., water supply engineering, China Construction Industry Press, 1995.6)
Chemical oxidization method be study at most, one of the most promising sewage water treatment method, wherein with methods such as wet type air oxidation, supercritical oxidation, photochemical catalytic oxidation, ozone oxidation, and The Application of Technology such as relevant UV-light, magnetic field, ultrasonic wave have all obtained, and some are progressive.
Wet air oxidation is proposed in 1958 by American scholar F.J.Zimmermann at first, catalytic wet air oxidation process (the Lee.D.S.Wet Oxidation Micro Reactor System that the seventies in last century successively occurs various efficient stables, Paper at Poll, ControlFED.Cont.New Orleassiana, Louisiana, 1988; Yang Qi etc., abroad to the progress of sewage wet oxidation processing, environmental science is made progress, and 1994,15 (4); Tan second place waits waste water catalytic wet oxidation method and Research Progress in Catalyst thereof, environmental engineering, 1998,17 (4)), China also has more research (Tang Wenwei etc., wet oxidation Research progress in the wastewater treatment in this respect in recent years, Shanghai environmental science 1999,18 (5); Lei Lecheng etc., the research of wet oxidation sewage disposal dye wastewater with high concentration, China Environmental Science, 1999 (1)).This method is adapted to high density, difficult degradation, poisonous, harmful waste water processing, treatment scale is generally less, and pollutant removal gets comparatively thorough, and general organism, colourity, peculiar smell clearance can reach 90～99%, but facility investment and working cost are higher, and facility investment surpasses 4000 yuan/m
3Working cost surpasses 1.5 yuan/m
3Supercritical oxidation technology is the mid-80 American scholar Modell proposition in last century, obtain bigger progress in developed country the nineties, realized through engineering approaches (Zhuan Yuanyi etc., supercritical water oxidation method in the wastewater treatment new technology, urban environment and urban ecology, 1998 (3); Bigda, R.J., Consider Fenton ' s Chemistry for Waste WaterTreatment, Chemical Eng.Pro., Dec., 1995). China then is in development (Xu Zhongqi etc., organic wastewater with difficult degradation thereby is handled new technology, Jiangsu environmental science and technology, 2000.13 (1); Lin Chunmian etc., the application of supercritical water oxidation technology in treatment of Organic Wastewater, Zhejiang chemical industry, 1996.27 (2)).Supercritical oxidation process is to utilize the characteristics of the even phase of supercritical state aqueous vapor to carry out sewage oxidation treatment, this method is adapted to various high densitys, difficult degradation, poisonous, harmful waste water processing, treatment scale is generally less, pollutant removal gets more thorough, and general organism, colourity, peculiar smell clearance can reach 95～99.9%.But facility investment and working cost height, facility investment generally surpass 6000 yuan/m
3, working cost surpasses 2 yuan/m
3
Ozone oxidation is used early, and is also more extensive, but selectivity is stronger, and oxidation efficiency is lower.Used sterilization more.The most employing of ozone oxidation in recent years combines with photochemical catalysis or other catalyzed oxidations, has improved oxidation efficiency.Ozone ozonizer electrion on-site preparation.Though ozonizer improves through research for many years, has improved efficient, has reduced working cost, but the facility investment of this method and working cost are still higher, this is the principal element (Zhang Pengyi etc., the progress that ozone water is handled, environmental science progress 1995 (6)) of the application and the development of restriction ozone oxidation method.
The ultraviolet ray of specific wavelength has katalysis to the oxidation of predetermined substance.Fuji island in 1972 and Honda have been found the TiO of illumination
2The monocrystalline electrode can water of decomposition (congratulating northern equality, the present Research of conductor photocatalysis oxidation of organic compounds and development trend, environmental science, 1994 (3)).Tyros began one's study this phenomenon were used for sewage disposal (O.Legrini last century 80, Photochemical Process for Water Treatment, ChemicalReviews, 1993 (2), R.Bauer, The Photo-Fenton Research and TiO
2/ UVProcess, Catalysis Today 1999 (53)). China has developed technology (Wu east equality, the organic research trends of ultraviolet catalytic technical finesse, environmental engineering, 1998 (3) of practical photocatalytic oxidation sewage treatment; Lei Dongcheng etc., light help the research of Fenton oxidation PVA desized wastewater, ACTA Scientiae Circumstantiae, 2000 (2)).This method is adapted to various high densitys, difficult degradation, poisonous, harmful waste water processing, and scale is generally less, and general organism, colourity, peculiar smell clearance can reach 80～90%, and facility investment generally surpasses 3500 yuan/m
3, working cost surpasses 1.2 yuan/m
3
Magnetization can change calcium magnesium plasma and colloidal structure in the water, and Japan develops magnetization circulating coagulation technology, effect apparent in view (magnetism formula water treating device, No. the 774297th, day special permission).
It is thorough that chemical oxidization method sewage has oxidation, non-secondary pollution, take up an area of less, advantage such as simple to operate, wide accommodation, but have also that speed of response is slow, equipment manufacturing cost and the high shortcoming of working cost.The trend of technical development mainly is various effective catalysts of research and development and the various novel procesies of improving oxidizing condition of exploitation.The novel process aspect mainly is to improve reaction conditions such as temperature, pressure and apply energy (ripple), as ultraviolet ray, ultrasonic wave and magnetic field etc., but all is to utilize the single energy field, can't be satisfactory to the effect of improving oxidation.
Summary of the invention
At the weak point that above-mentioned prior art exists, the invention provides that a kind of oxidation efficiency is higher, cost is low, easy to operate, be adapted to the technological method of various high densitys, difficult degradation, poisonous, harmful sewage disposal.
This method of the present invention is the coupling field oxidation method, and its treatment process is as described in the accompanying drawing 1, and sewage magnetizes processing through device for magnetizing and treating earlier, then enters first set reaction pond and coagulating agent and reacts, and removes suspended substance through primary sedimentation pond.The sewage of having removed suspended substance enters the first coupling field oxidation pond and carries out oxidizing reaction, sewage after the oxidation reacts with coagulating agent in reaction tank, react at the second coupling field oxidation pond reoxidation through the settling tank post precipitation, water can discharge or reuse behind the secondary oxidation again.More after a little while, can carry out oxidizing reaction and directly enter the first coupling field oxidation pond as pollutent in the sewage without magnetization processing, first coagulating agent reaction, precipitation.The core of this technology is the oxidizing reaction in the coupling field oxidation pond.Described coupled field is an energy field of utilizing multiple energy (ripple) to form, and to improve oxidizing condition, wherein, coupled field can be magnetic field (permanent magnetic field and electromagnetic field) and ultrasonic wave coupling; Also can be the coupling of magnetic field and UV-light coupling or ultrasonic wave and UV-light, can also be that magnetic field, ultrasonic wave and three kinds of energy of UV-light are formed coupled field.
The ultrasonic system that in the coupling field oxidation pond, is provided with.Dissolved multiple gases in sewage, had little gas nuclear, little gas nuclear constantly forms under ultrasonic wave field, and the expansion of expanding, compression are collapsed and gone out.This process is called the ultrasonic cavitation effect, has formed cavitation bubble (hole) this moment, has surrounded superthermal liquid phase layer and three zones of main body liquid phase of cavity surface.Be formed up in the hole and collapse in the process of going out, its temperature inside and pressure also constantly change thereupon, and temperature rapidly increases to 1900 ° more than the K by normal temperature, and pressure is rapidly increased to more than the 50Mpa by negative pressure.Under High Temperature High Pressure like this, the organism of inside, hole directly burns and thermolysis.Be supercritical state at superthermal liquid phase layer water, the supercritical oxidation reaction takes place, be reflected in the homogeneous phase and carry out, improved oxidation efficiency.Go out along with the hole constantly forms and collapses, hole, superthermal liquid phase layer and main body liquid phase constantly replace, the then continuous oxidized decomposition of pollutants in sewage, and sewage still is the normal temperature and pressure state on apparent.Because cavitation effect, water vapor can produce a certain amount of activation hydroxyl-OH
., OH
.Have extremely strong oxidation capacity, can oxidation comprise being difficult to biodegradable various organism.
The magnetic field that is provided with in the coupling oxidation pond comprises permanent magnetic field and alternating electromagnetic field.Magnetic is the general attribute of material, and under the action of a magnetic field, magnetic moment can change, and bond distance, bond angle, bonding force are influenced also by it to change, and the interior of some pollutent can greatly reduce, and creates good oxidation reaction condition.Under the action of a magnetic field, physico-chemical property also changes, and by electrostatic interaction, cage turns the process of further promote the oxidation reactions such as using into.Under the action of a magnetic field, variation has also taken place in colloidal character, and it is charged to have changed colloidal, densification anti-electricity layer, make colloidal solid easier grow up take off steady.Heavy metal in the sewage is easier generation complex compound under the action of a magnetic field, forms colloid, separates with other suspended substance coagulant precipitations.
The ultraviolet ray of specific wavelength has katalysis to the oxidation of predetermined substance, and when having these materials in sewage, its oxygenizement is further strengthened in the ultraviolet ray meeting of specific wavelength in the coupling field oxidation pond.
The used oxygen serial gas of coupling field oxidation is to make by the electrion to air, is by O
-, O
2, O, O
3The blending oxidizing agent of forming.Compared following characteristics with ozone:
The first, preparation condition is wide, and air need not purify, to its humidity without limits;
The second, efficient is higher, adopts discharge processes equally, because product is to form ozone oxygen series mixed gas before, efficient is far above the preparation of ozone.
The 3rd, oxidation capacity is stronger, and oxidation is wider.The oxidation scope of ozone is narrower, and selectivity is strong, has stronger sterilizing ability.Some oxygenant can be directly and H in the mixed gas
2O generates H
2O
2, OH
., the efficient height, oxidation capacity is strong.
The core of coupling field oxidation sewage treatment process is exactly a coupling field oxidation, and the integral device of coupling field oxidation is the coupling field oxidation pond, and it mainly comprises equipment such as ultrasonic wave, magnetic field, UV-irradiation and the generation of oxidation series blending oxidizing agent.
Blending oxidizing agent is industrial anion generator or ozonizer and strengthens air flux, reduces ozone purity and produces.Permanent magnetic field adopts commercially available stainless steel permanent magnetism pole plate.Alternating electric field adopts the commercially available alternating electromagnetism utmost point of many groups.Ultrasonic wave adopts the commercially available ultrasonic generator of many groups.Wide spectrum UV lamp is adopted in ultraviolet ray.Device for magnetizing and treating adopts commercially available water treatment magnetizing apparatus in addition.
The operational conditions of coupling field oxidation sewage treatment process is:
Former water: pH value 4～10, COD≤8000mg/L, the organism ratio of difficult for biological degradation, venomous injurant is all more unrestricted than ratio, amicine matter, heavy metal content, salinity, temperature (＞0 ℃).
Permanent magnetic field: magnetic induction 0.005～0.01T.
Electromagnetic field: magnetic induction 0.5～5.0T.
Ultrasonic frequency (4～10) * 10
4Hz.
Ultraviolet wavelength 200～300nm is based on 250～270nm.
The mixed oxidant gas flux is determined according to the composition and the pollutant load of sewage, is generally 0.5～30 times of sewage quantity.
The processing method of coupling field oxidation sewage disposal, organically physics, chemical actions such as electronic discharge principle, ultrasonic cavitation effect, magnetic field effect, electrochemical oxidation are coupled in one, utilize ultrasonic wave, permanent magnetism, alternating electromagnetic field, electronic discharge, the UV-irradiation homenergic, the structure of change water molecules and pollutent changes chemical bond in conjunction with mode, reduce its bonding force, reduce activation energy, activate pollutent, make it become active state; Form numerous High Temperature High Pressure hole simultaneously, created extraordinary oxidation reaction condition, and then under the effect of blending oxidizing agent, quicken the physical-chemical reaction process of pollutent in the sewage, thereby reached the purpose that pollutent is degraded and purifies.
Through a large amount of experiments, prove that the present invention compared with prior art has following characteristics:
Treatment effect is good, and COD, BOD, SS, N, P, colourity, peculiar smell clearance all can reach more than 90%, and 100% kills all bacteriums and virus, can remove heavy metal ion;
Applied range: not only can remove biodegradable organic, can also remove the organism of difficult for biological degradation, and remove phosphorus, nitrogen, the heavy metal that is contained, and can remove look, taste removal and sterilization;
Working conditions is wide: not limited by temperature, salinity, and the PH wide accommodation, heavy metal and other hazardous and noxious substances do not influence treatment effect;
Strong shock resistance is subjected to the influence of the water yield and change of water quality few, but intermittent operation, also continuously-running.
Description of drawings
Accompanying drawing 1 and 2 is process flow sheet of the present invention, and Fig. 1 is the schema of basic procedure and embodiment 1～4; Fig. 2 is embodiment 5～8 schemas.
Embodiment
Embodiment 1
The technical process of embodiment as shown in Figure 1.Magnetization is handled and is adopted permanent magnet magnetization, magnetic induction 0.01T.Coupling field oxidation adopts magnetic field and ultrasonic wave coupling, permanent magnetic field magnetic induction 0.01T, and the electromagnetic field magnetic strength is forced the way across 2T, ultrasonic frequency 60,000 Hz.Blending oxidizing agent PC-3 ozonizer, logical pressurized air, O
3Content is about 23%, O
2About 46% other be O
-And O.
Sewage adopts aquatic products processing waste water to add tame phenol, diesel oil, bright red dyestuff and manually prepares, and every index is as follows: COD2832mg/L, BOD826mg/L, SS860mg/L, oils 120mg/L, phenol 80mg/L, 600 times of colourities, PH7.4, Cl
-1400mg/L. the operation result of differential responses time is shown in table 1, the reaction times is total reaction time in the table, each 5min of coagulating time wherein, each 25min of sedimentation time.
Embodiment 2
The coupling field oxidation of embodiment 2 adopts magnetic field and ultraviolet ray coupling, and wide spectrum UV lamp is adopted in ultraviolet ray, wavelength 200-280nm, and other conditionally completes are with embodiment 1.Operation result is shown in table 1.
Embodiment 3
The coupling field oxidation of embodiment 3 adopts ultrasonic wave and ultraviolet ray coupling, and wide spectrum UV lamp is adopted in ultraviolet ray, wavelength 200-280nm, and other conditionally completes are with embodiment 1.Operation result is shown in table 1.
Embodiment 4
The coupling field oxidation of embodiment 4 adopts magnetic field, ultrasonic wave and ultraviolet ray coupling, and the UV lamp is adopted in ultraviolet ray, wavelength 200-280nm, and other conditionally completes are with embodiment 1.Operation result is shown in table 1.
For the effect of comparing embodiment 1-4, carried out only adding magnetic field, only add ultrasonic wave, only add ultraviolet ray, separately ozone oxidation contrast.Ozone oxidation adopts the ozonizer of same model separately, but presses air usually.Other conditions are identical with embodiment.Operation result is shown in table 1.
Embodiment 5
The technical process of embodiment 5 as shown in Figure 2.Coupling field oxidation adopts magnetic field and ultrasonic wave coupling, and permanent magnetic field, electromagnetic field, ultrasonic wave, blending oxidizing agent are with embodiment 1.
The sewage sanitary sewage adds phenol, diesel oil, CuSO
4Artificial preparation, every index is as follows: COD286mg/L, BOD113mg/L, SS139mg/L, oils 30mg/L, phenol 20mg/L, Cu
2+200mg/L, PH6.9, Cl
-110mg/L.The operation result of differential responses time is shown in table 2, and the reaction times is total reaction time in the table, coagulating time 5min wherein, sedimentation time 25min.
Embodiment 6
The coupling field oxidation of embodiment 6 adopts magnetic field and ultraviolet ray coupling, and wide spectrum UV lamp is adopted in ultraviolet ray, wavelength, and 200-280nm, other conditionally completes are with embodiment 5.Operation result is shown in table 2.
Embodiment 7
The coupling field oxidation of embodiment 7 adopts ultrasonic wave and ultraviolet ray coupling, and wide spectrum UV lamp is adopted in ultraviolet ray, wavelength 200-280nm, and other conditionally completes are with embodiment 5.Operation result is shown in table 2.
Embodiment 8
The coupling field oxidation of embodiment 8 adopts magnetic field, ultrasonic wave and ultraviolet ray coupling, and wide spectrum UV lamp is adopted in ultraviolet ray, wavelength 200-280nm, and other conditionally completes are with embodiment 5.Operation result is shown in table 2.
For the effect of comparing embodiment 5-8, carried out only adding magnetic field, only add ultrasonic wave, only add ultraviolet ray, separately ozone oxidation contrast.Ozone oxidation adopts the ozonizer of same model separately, but presses air usually.Other conditions are identical with embodiment.Operation result is shown in table 2.
Table 1
| The mensuration project | COD(mg/L) | BOD(mg/L) | SS(mg/L) | Oils (mg/L) | Phenol (mg/L) | Colourity (doubly) | |||||||||||||
| Reaction times (h) | 1.5 | 4 | 8 | 1.5 | 4 | 8 | 1.5 | 4 | 8 | 1.5 | 4 | 8 | 1.5 | 4 | 8 | 1.5 | 4 | 8 | |
| Embodiment | Embodiment 1 | 1109 | 532 | 50 | 334 | 128 | 57 | 311 | 149 | 69 | 33 | 7.3 | 0.3 | 28.6 | 2.6 | 0.0 | 110 | 30 | ＜10 |
| Embodiment 2 | 1118 | 539 | 50 | 336 | 131 | 58 | 308 | 148 | 71 | 38 | 7.6 | 0.3 | 26.7 | 3.0 | 0.0 | 120 | 30 | ＜10 | |
| Embodiment 3 | 1125 | 546 | 52 | 341 | 129 | 62 | 310 | 152 | 70 | 36 | 7.4 | 0.4 | 27.3 | 2.8 | 0.0 | 120 | 30 | ＜10 | |
| Embodiment 4 | 1086 | 525 | 48 | 325 | 120 | 53 | 304 | 146 | 65 | 32 | 6.8 | 0.1 | 26.4 | 2.2 | 0.0 | 90 | 20 | ＜10 | |
| Contrast | Magnetic field | 1289 | 723 | 86 | 389 | 177 | 84 | 329 | 235 | 107 | 45 | 14.2 | 2.7 | 53.6 | 6.4 | 0.2 | 250 | 60 | ＜10 |
| Ultrasonic wave | 1180 | 672 | 80 | 370 | 161 | 76 | 335 | 261 | 134 | 48 | 12.0 | 1.9 | 52.1 | 5.8 | 0.4 | 240 | 60 | ＜10 | |
| Ultraviolet ray | 1164 | 648 | 76 | 374 | 165 | 72 | 344 | 259 | 141 | 43 | 9.7 | 0.8 | 48.9 | 4.4 | 0.0 | 180 | 40 | ＜10 | |
| Ozone | 1232 | 680 | 83 | 380 | 164 | 74 | 341 | 265 | 136 | 46 | 11.2 | 2.6 | 50.6 | 4.6 | 0.0 | 160 | 40 | ＜10 | |
Table 2
| The mensuration project | COD(mg/L) | BOD(mg/L) | SS(mg/L) | Oils (mg/L) | Phenol (mg/L) | Cu 2+(mg/L) | |||||||||||||
| Reaction times (h) | 1 | 2 | 4 | 1 | 2 | 4 | 1 | 2 | 4 | 1 | 2 | 4 | 1 | 2 | 4 | 1 | 2 | 4 | |
| Embodiment | Embodiment 5 | 96 | 60 | 20 | 62 | 21 | 10 | 47 | 30 | 17 | 15 | 3.3 | 0.3 | 8.2 | 1.5 | 0.2 | 150 | 106 | 64 |
| Embodiment 6 | 92 | 58 | 20 | 60 | 18 | 8 | 48 | 32 | 19 | 14 | 3.4 | 0.4 | 8.6 | 1.7 | 0.3 | 149 | 104 | 65 | |
| Embodiment 7 | 88 | 54 | 18 | 59 | 20 | 8 | 50 | 33 | 18 | 16 | 3.6 | 0.3 | 8.4 | 1.6 | 0.4 | 148 | 105 | 63 | |
| Embodiment 8 | 74 | 46 | 14 | 53 | 16 | 6 | 46 | 30 | 16 | 12 | 3.2 | 0.2 | 7.6 | 1.3 | 0.0 | 149 | 106 | 66 | |
| Contrast | Magnetic field | 112 | 71 | 43 | 70 | 25 | 16 | 49 | 38 | 22 | 20 | 6.5 | 1.2 | 12.3 | 2.9 | 1.4 | 162 | 134 | 98 |
| Ultrasonic wave | 94 | 60 | 29 | 64 | 22 | 14 | 52 | 40 | 26 | 20 | 6.0 | 0.8 | 11.1 | 2.6 | 1.2 | 182 | 170 | 156 | |
| Ultraviolet ray | 98 | 59 | 30 | 69 | 24 | 13 | 56 | 42 | 29 | 19 | 5.3 | 0.4 | 10.8 | 2.3 | 0.8 | 190 | 179 | 162 | |
| Ozone | 104 | 62 | 35 | 73 | 26 | 15 | 55 | 42 | 28 | 16 | 5.5 | 0.6 | 11.2 | 2.4 | 0.8 | 189 | 181 | 163 | |
Claims (2)
1. the method for an oxidation sewage disposal is carried out the sewage water treatment method of oxide treatment at least in the coupled field that it is characterized in that sewage two kinds of energy in magnetic field, UV-light, ultrasonic wave are formed; Technical process is: sewage enters the first coupling field oxidation pond, in the coupled field that at least two kinds of energy are formed in magnetic field, UV-light, ultrasonic wave, carry out oxidation with blending oxidizing agent, water after the oxidation adds coagulating agent reaction, precipitation, then enters the second coupling field oxidation pond again and advances the secondary coupling field oxidation;
Described magnetic field is made up of permanent magnetic field and alternating electromagnetic field, and its magnetic induction is respectively 0.005～0.01T and 0.5～5.0T; UV-light is provided by wide spectrum UV lamp; Ultrasonic wave is provided by ultrasonic generator, and its frequency is (4～10) * 10
4Hz; Described blending oxidizing agent is the O that contains of air electrion generation
-, O, O
3And O
2Gas;
Processing condition are: raw waste water PH:4～10, COD≤8000mg/L carries out under water temperature＞0 ℃, the normal pressure.
2. the method for oxidation sewage disposal as claimed in claim 1, it is characterized in that sewage magnetizes processing before the coupling field oxidation pond entering for the first time, its technical process is: sewage magnetizes processing with the water treatment magnetizing apparatus earlier, add coagulating agent then and react, carry out coupling field oxidation again through post precipitation.
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| CN1165491C true CN1165491C (en) | 2004-09-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618918B (en) * | 2009-07-30 | 2011-07-20 | 杨春辉 | Optomagnetic sewage treatment device and optomagnetic sewage treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359872B (en) * | 2013-08-02 | 2014-11-05 | 浙江合弘环保科技有限公司 | Domestic wastewater treatment method |
| CN105366869A (en) * | 2015-12-14 | 2016-03-02 | 江苏源泰恒环境工程有限公司 | Mobile magnetic separation water purification equipment |
| CN112340934A (en) * | 2020-09-02 | 2021-02-09 | 广州昭合环保科技有限公司 | Method for denitrifying sewage by ion beam superposition biological method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618918B (en) * | 2009-07-30 | 2011-07-20 | 杨春辉 | Optomagnetic sewage treatment device and optomagnetic sewage treatment method |
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