CN113582465A - System and method for treating high ammonia nitrogen wastewater by using diamond film electrode - Google Patents
System and method for treating high ammonia nitrogen wastewater by using diamond film electrode Download PDFInfo
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 37
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 36
- 239000010432 diamond Substances 0.000 title claims abstract description 36
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 15
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- 239000010936 titanium Substances 0.000 claims abstract description 10
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- 238000012546 transfer Methods 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 5
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 abstract description 2
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- 239000000126 substance Substances 0.000 description 7
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- 238000005273 aeration Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- 229910001018 Cast iron Inorganic materials 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 239000007868 Raney catalyst Substances 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
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- 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
- C02F1/46104—Devices therefor; Their operating or servicing
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- 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
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
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Abstract
The invention belongs to the technical field of high ammonia nitrogen wastewater treatment, and particularly relates to a system and a method for treating high ammonia nitrogen wastewater by using a diamond film electrode. This system, including the electrolytic bath, the inlet intercommunication of electrolytic bath has and contains DMSO waste water storage tank, perhaps, the inlet intercommunication of electrolytic bath has and contains DMF waste water storage tank, perhaps, contains DMSO waste water storage tank and contains DMF waste water storage tank and communicate the blending tank respectively, the blending tank intercommunication the electrolytic bath, wherein: the anode of the electrolytic cell is a diamond film electrode, and the cathode of the electrolytic cell is a titanium electrode. The system is based on diamondThe membrane electrode can successfully convert the total nitrogen in the high ammonia nitrogen wastewater into ammonia nitrogen and convert COD into CO2. The wastewater can be treated completely by simple treatment modes such as an A/O pool and the like.
Description
Technical Field
The invention belongs to the technical field of high ammonia nitrogen wastewater treatment, and particularly relates to a system and a method for treating high ammonia nitrogen wastewater by using a diamond film electrode.
Background
At present, a few enterprises produce high-concentration waste ammonia nitrogen wastewater in China. The waste water mainly comprises two types, wherein one type of waste water is waste water containing dimethyl formamide (DMF), and the water amount is about 30m3And d, COD is more than 100000mg/L, and total nitrogen is more than 20000 mg/L. If directly fed into a wastewater treatment system, the wastewater contributes more than approximately 90% of the total nitrogen load of the entire system, in addition to contributing a substantial organic load to the system. And the total nitrogen in the waste water mainly exists in the form of organic nitrogen, the biodegradation of the organic nitrogen needs to be carried out through an ammonification-nitrification-denitrification process, most pollutants in the waste water belong to high molecular substances which are difficult to degrade, the ammonification effect of the traditional anaerobic treatment on the organic nitrogen is very little, the nitrification efficiency of an aerobic system is low, and the total nitrogen and ammonia nitrogen are difficult to discharge after reaching the standard. Therefore, the treatment of wastewater containing DMF is a problem which is compelling to be solved and is the most troublesome. The other wastewater is high-concentration wastewater containing DMSO, and mainly contains dimethyl sulfoxide, methanol, salinity and the like. The water amount is about 80m3And d, COD is more than 110000mg/L, and total nitrogen is lower. Although the organic matter concentration of the waste water is high, the waste water contains a large amount of methanol and DMSO, and the biodegradability is relatively good. If the pretreatment is sufficient, the impact on the system is small. However, both of the above-mentioned two kinds of waste water have the characteristics of high concentration, high salinity, high toxicity, etc., so that once such waste water is improperly treated, the whole treatment system is easily broken down.
DMF has certain toxicity, can enter human bodies through respiratory tracts, digestive tracts and skins, and is determined as a grade III (moderate harm) dangerous object by classification of the degree of harm of occupational toxicant contact in China; DMF is chemically stable and difficult to biodegrade directly. At present, the domestic pretreatment methods for DMF-containing wastewater mainly comprise physical and chemical methods (distillation, adsorption, extraction, membrane separation and the like) and chemical methods (catalytic oxidation, supercritical water oxidation, alkaline hydrolysis, advanced oxidation and the like). However, the physical and chemical method can not improve the biodegradability and the ammonia conversion rate of the wastewater and is not suitable for the characteristic of low organic matter content of the wastewater of our company.
CN 103864182A invented a device and method for electrochemical treatment of molasses alcohol waste liquor, the method is characterized in that a diamond film electrode is used as an anode, a titanium plate is used as a cathode, constant current is used for continuously electrolyzing the molasses alcohol waste liquor, and hydroxyl radical generated on the surface of the electrode is used for oxidizing and degrading organic matters in the molasses alcohol waste liquor, and the device and method are mainly used for removing pigments and degrading chemical oxygen demand. The method focuses on illustrating the COD removal by electrolysis, and does not illustrate the capability of removing ammonia nitrogen in the wastewater and the effect of performing biochemical treatment on the treated wastewater.
CN 109704516A invented a system and a method for treating aniline wastewater, the system comprises: acid-base regulation, namely an electro-Fenton reactor, wherein electrodes are vertically arranged in parallel by adopting a plurality of cast iron polar plates; flocculation; a. the2O biological reaction tank, sedimentation tank; EP-Kaisen electrocatalysis; the invention has complex process flow, the electrocatalysis is mainly used for the electrooxidation of biochemical effluent, the treated water amount is large, and the cost is high.
CN101555080A discloses a method similar to CN101792221A, comprising the steps of aeration catalytic micro-electrolysis, catalytic electro-oxidation reaction, adsorption and coagulation, wherein the method comprises aeration electrolysis and electro-catalytic oxidation, the ammonia conversion rate is low, a large amount of total nitrogen can not be converted into ammonia nitrogen, acid and alkali adjustment is frequent in the process, the operation difficulty is high, the material consumption is high, secondary pollution is easy to cause, and the treatment cost is high.
CN 1002730802A invented a method and apparatus for high-grade oxidation of electrocatalytic organic waste water, the method is in the presence of the catalytic bed of the electric decomposition, the electric catalytic decomposer with certain pressure can produce hydroxyl free radical with extremely high oxidability, degrade the organic waste water effectively, said method uses catalyst (Raney nickel), although the catalyst has improved the catalytic activity of point, but brought the use of a large amount of catalyst, and produced the secondary heavy metal pollution, and the subsequent nitration and denitrification ammonia nitrogen remove the problem not illustrated, there is a serious defect.
According to the characteristics of the two types of high-concentration wastewater, the two types of wastewater are directly subjected to biochemical treatment, the nitrification and denitrification of an aerobic system cannot be normally carried out due to the excessively low ammoniation rate and poor biodegradability, the total nitrogen and ammonia nitrogen of effluent are easy to exceed standards, and the treatment efficiency is low.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a system and a method for treating high ammonia nitrogen wastewater by using a diamond film electrode. The method can effectively improve the ammonia-nitrogen conversion rate and the biodegradability of the ammonia-nitrogen wastewater, realize the efficient and economic treatment of the two types of wastewater, and solve the problems of easy secondary pollution, difficult regeneration, low efficiency and the like of the existing treatment methods such as adsorption, extraction and the like.
The technical scheme provided by the invention is as follows:
the utility model provides an utilize system of diamond film electrode processing high ammonia-nitrogen concentration waste water, includes the electrolytic bath, the inlet intercommunication of electrolytic bath has and contains DMSO waste water storage tank, perhaps, the inlet intercommunication of electrolytic bath has and contains DMF waste water storage tank, perhaps, contains DMSO waste water storage tank and contains DMF waste water storage tank and communicate the blending tank respectively, the blending tank intercommunication the electrolytic bath, wherein:
the anode of the electrolytic cell is a diamond film electrode, and the cathode of the electrolytic cell is a titanium electrode.
The system for treating high ammonia nitrogen wastewater by using the diamond film electrode, which is provided by the technical scheme, can successfully convert total nitrogen in the high ammonia nitrogen wastewater into ammonia nitrogen and convert COD into CO based on the diamond film electrode2. The wastewater can be treated completely by simple treatment modes such as an A/O pool and the like.
Further, the electrolytic cell is sequentially communicated with the transfer tank and the A/O cell.
Based on the technical scheme, the effluent is treated by the A/O pool after the electrolytic cell, and the COD removal rate and the ammonia nitrogen removal rate of the effluent are further improved.
Furthermore, the A/O pool is communicated with a low-concentration wastewater inlet pipe.
Based on the technical scheme, the low-concentration wastewater is used as the blending water, the biodegradability of the mixed water can be effectively improved at the section A, and therefore the O section is more favorable for oxidation removal of COD and ammonia nitrogen.
Specifically, the interelectrode voltage of the electrolytic cell is 4-5V; the interpolar current of the electrolytic cell is 900-1000A; the interpolar current density of the electrolytic cell is 1000-2(ii) a The electrolysis time is 20-36 h.
Preferably, the electrolysis time is 20 to 36 hours, and more preferably, the electrolysis time is 22 hours, so that safety and economy can be ensured.
The invention also provides a method for treating high ammonia nitrogen wastewater by using the diamond film electrode, which electrolyzes wastewater containing DMSO and/or wastewater containing DMF to obtain low ammonia nitrogen wastewater, wherein:
the anode of the electrolysis is a diamond film electrode, and the cathode of the electrolysis is a titanium electrode;
the COD of the wastewater containing DMSO is 30000-110000mg/L, and the total nitrogen is 500-3500 mg/L;
the COD of the DMF-containing wastewater is 40000-100000mg/L, and the total nitrogen is 10000-20000 mg/L.
Further, the low ammonia nitrogen treated water is sequentially subjected to transfer and A/O treatment to obtain treated water.
The technical scheme is based on the diamond film electrode, can successfully convert the total nitrogen in the high ammonia nitrogen wastewater into ammonia nitrogen and convert COD into CO2. The wastewater can be treated completely by simple treatment modes such as an A/O pool and the like.
Further, low-concentration wastewater is introduced in the A/O treatment stage.
Based on the technical scheme, the effluent is treated by the A/O pool after being treated by the electrolytic cell, and the COD removal rate and the ammonia nitrogen removal rate of the effluent are further improved.
Specifically, the treatment capacity of the low-concentration wastewater is 1200-1400m3/d。
Specifically, the dosage ratio of the low-concentration wastewater to the electrolyzed low-ammonia nitrogen wastewater is (12-17.5): 1.
based on the technical scheme, the low-concentration wastewater is used as the blending water, the biodegradability of the mixed water can be effectively improved at the section A, and therefore the O section is more favorable for oxidation removal of COD and ammonia nitrogen.
Specifically, the treatment capacity of the wastewater containing DMSO and/or the wastewater containing DMF is 80-100m3/h。
The invention has the beneficial effects that:
1. according to the invention, the diamond film electrode is utilized to treat the high ammonia nitrogen wastewater, and the longer the reaction time is, the higher the ammonia nitrogen removal rate and the COD removal rate are; the common electrode plate or micro-electrolysis can not achieve the treatment effect aiming at the high ammonia nitrogen wastewater;
2. considering both the safety and the economical efficiency of application, when the electrolysis is carried out for 22 hours, the degradation rate of COD can reach 75.8 percent, the ammonia conversion rate can reach more than 90 percent, and the ammonia nitrogen removal rate of a back-stage A/O biochemical system is higher and more thorough and can reach 94 percent;
3. the method has short process flow and simple equipment, does not need to repeatedly adjust acid and alkali and adopt other physical methods to remove sediments, and basically does not produce biochemical sludge; the reagent needs a small amount of reagent, and the hazardous waste disposal cost is low.
Drawings
FIG. 1 is a system diagram of a system for treating high ammonia nitrogen wastewater by using a diamond film electrode.
FIG. 2 is a table showing the degradation of water quality according to the present invention.
FIG. 3 is a graph showing the TOC and COD removal rates of the present invention.
FIG. 4 is a diagram showing the ammonia nitrogen and pH rule of the invention.
In fig. 1, the structure represented by each reference numeral is listed as follows:
1. the device comprises a DMSO-containing wastewater storage tank, 2 a DMF-containing wastewater storage tank, 3 a mixing tank, 4 a transfer tank, 5 an electrolytic cell and 6 an A/O cell.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
In one embodiment, as shown in FIG. 1, utilizingThe system for treating high ammonia nitrogen wastewater by using the diamond film electrode comprises an electrolytic cell 5, wherein a DMSO-containing wastewater storage tank 1 and a DMF-containing wastewater storage tank 2 are respectively communicated with a mixing tank 3, the mixing tank 3 is communicated with the electrolytic cell 5, and the electrolytic cell is characterized in that: the anode of the electrolytic cell 5 is a diamond film electrode, and the cathode of the electrolytic cell 5 is a titanium electrode. The system for treating high ammonia nitrogen wastewater by using the diamond film electrode is based on the diamond film electrode, and can successfully convert more than 84% of total nitrogen in the high ammonia nitrogen wastewater into ammonia nitrogen and convert more than 99% of COD into CO2. The wastewater can be treated completely by simple treatment modes such as an A/O pool 6 and the like.
Compared with the independent treatment of DMSO wastewater, the mixed treatment has the advantages that salt is not required to be added in the mixed treatment to increase the conductivity, and the COD removal rate is high.
Compared with the single treatment of DMF wastewater, the mixed treatment has the advantages of short electrolysis time, high COD removal rate and reduced energy consumption.
In one embodiment, the system for treating high ammonia nitrogen wastewater by using the diamond film electrode comprises an electrolytic cell 5, wherein a liquid inlet of the electrolytic cell 5 is communicated with a DMSO-containing wastewater storage tank 1, wherein: the anode of the electrolytic cell 5 is a diamond film electrode, and the cathode of the electrolytic cell 5 is a titanium electrode. Based on the technical scheme, more than 95 percent of total nitrogen in the high ammonia-nitrogen wastewater can be successfully converted into ammonia nitrogen, and more than 90 percent of COD (chemical oxygen demand) can be successfully converted into CO2. The wastewater can be treated completely by simple treatment modes such as an A/O pool 6 and the like.
In one embodiment, the system for treating high ammonia nitrogen wastewater by using the diamond film electrode comprises an electrolytic cell 5, wherein a liquid inlet of the electrolytic cell 5 is communicated with a DMF (dimethyl formamide) -containing wastewater storage tank 2, wherein: the anode of the electrolytic cell 5 is a diamond film electrode, and the cathode of the electrolytic cell 5 is a titanium electrode. Based on the technical scheme, more than 69% of total nitrogen in the high ammonia-nitrogen wastewater can be successfully converted into ammonia nitrogen, and more than 85% of COD can be successfully converted into CO2. The wastewater can be treated completely by simple treatment modes such as an A/O pool 6 and the like.
In one embodiment, as shown in FIG. 1, the electrolytic cell 5 is in communication with the transfer pot 4 and the A/O cell 6 in sequence. Based on the technical scheme, on the basis of the effluent of the electrolytic cell, the COD removal rate of the discharged water can reach more than 90%, and the ammonia nitrogen removal rate can reach more than 94%. The A/O pool 6 can be directly connected with a drainage pipe.
In one embodiment, as shown in FIG. 1, the A/O tank 6 is connected to a low-concentration wastewater inlet pipe. Based on the technical scheme, the low-concentration wastewater is used as the conditioning water, and the electrolyzed wastewater can be diluted to reach biochemical conditions.
In one embodiment, as shown in fig. 1, a first valve, a first lift pump, a second valve and a first flow meter are sequentially communicated between the DMSO-containing wastewater storage tank 1 and the mixing tank 3. Based on the technical scheme, the controllability of the system can be improved.
In one embodiment, as shown in fig. 1, a third valve, a second lift pump, a fourth valve and a second flow meter are sequentially communicated between the DMF-containing wastewater storage tank 2 and the mixing tank 3. Based on the technical scheme, the controllability of the system can be improved.
In one embodiment, as shown in fig. 1, a fifth valve, a third lift pump, a sixth valve, a third flow meter and a seventh valve are sequentially communicated between the mixing tank 3 and the electrolytic cell 5. Based on the technical scheme, the controllability of the system can be improved.
In one embodiment, as shown in fig. 1, an eighth valve, a fourth lift pump, a ninth valve and a fourth flow meter are sequentially communicated between the electrolytic cell 5 and the transfer tank 4. Based on the technical scheme, the controllability of the system can be improved.
In one embodiment, as shown in fig. 1, a tenth valve, a fifth lift pump, an eleventh valve, a fifth flow meter and a twelfth valve are sequentially communicated between the transfer tank 4 and the a/O tank 6. Based on the technical scheme, the controllability of the system can be improved.
Examples
1. Electrolysis section
The high-concentration wastewater containing DMSO and the high-concentration wastewater containing DMF are mixed according to the ratio of 5: 1, and placing the mixed water in a device tank. Starting a circulating pump to fully stir and mix the wastewater, pumping the wastewater into an electrolytic tank after circulating for 5min, starting a rectifier, and adopting a constant currentAnd (3) current electrolysis, wherein the current is adjusted to 500A, the current is increased to 955A after the stable operation is carried out for 10min, and the wastewater begins to degrade. Sampling every 2h, detecting, and recording current, voltage value, pH, temperature, color change and the like. Cell electrode, anode: a diamond film electrode; cathode: titanium sheet. The total water treatment amount is 80-100m3。
Description of the phenomenon:
1) after electrolysis for 2 hours, the water temperature begins to rise, the water temperature rises to 68 ℃, and the temperature is basically stabilized at 68-70 ℃;
2) when the electrolysis is started, the voltage is higher, then the voltage is slowly reduced, the electrolysis is carried out for 16h, and the voltage is slowly increased;
3) after electrolysis, the pH value is slowly reduced, after the electrolysis is carried out for 14 hours, the pH value is reduced from 5.63 to 4.38, then the pH value is slowly increased, after the electrolysis is carried out for 30 hours, the pH value is increased to 7.44, then the pH value is reduced for the second time, after the electrolysis is carried out for 36 hours, the pH value is reduced to 3.06;
4) the color of the water sample becomes dark after electrolysis, the water sample becomes brown after electrolysis for 2h, the color begins to turn light yellow after electrolysis for 12h, the water begins to turn clear after electrolysis for 28h, and the water becomes clear after electrolysis for 34 h;
5) a small amount of precipitate is generated after 2 hours of electrolysis, and the precipitate is partially dissolved after the electrolysis for 12 hours. When the electrolysis time reaches 28h, a large amount of chlorine gas begins to be generated, the water sample begins to become clear, and when the electrolysis time reaches 36h, the water sample contains a large amount of hypochlorite odor.
From fig. 2, 3, 4, we can see:
1) the pH value is in the trend of descending first and then ascending, and then sharply decreases to the end point of electrolysis;
2) the TOC electrolysis begins to be in a descending trend and stably descends, the removal rate is about 40% after electrolysis for 15 hours, the removal rate is about 80% after electrolysis for 26 hours, and the removal rate reaches 93.1% after electrolysis for 36 hours;
3) COD electrolysis begins to be in a descending trend, and the descending is stable, the removal rate is about 40% after the electrolysis is carried out for 12 hours, the removal rate is about 75.8% after the electrolysis is carried out for 22 hours, and the removal rate is 99% after the electrolysis is carried out for 36 hours;
4) the removal rate of COD and TOC is stable, and a certain proportion is removed basically every hour;
5) along with the lengthening of the electrolysis time, the ammonia nitrogen concentration gradually rises, the ammonia nitrogen rises to the highest point when the electrolysis is carried out for 12 hours, then the ammonia nitrogen slowly falls, the electrolysis is carried out for 36 hours, and the ammonia nitrogen falls to within 100.
To summarize:
1) the DMSO-containing wastewater and the DMF-containing wastewater are mixed according to the proportion of 5: 1, mixing, electrolyzing for 36h, and basically reaching the end point of electrolysis;
2) electrolyzing for 15h, wherein the removal rate of TOC and COD is more than 40%, and the highest point of ammonia nitrogen is reached;
3) the temperature rises to 72-75 ℃ during the test process and is maintained;
4) during the electrolysis process, no chemical sludge is generated;
2. biochemical treatment stage
After the high-concentration wastewater after 22h electrolysis is blended with the low-concentration wastewater of the company (1: 10), the wastewater enters an A/O aerobic system for biochemical reaction, and the results are shown in Table 1:
TABLE 1A/O System removal rates
The total removal rate of COD is more than 90.00 percent, and the total removal rate of ammonia nitrogen is more than 94.00 percent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides an utilize system of diamond film electrode treatment high ammonia-nitrogen concentration waste water which characterized in that: including electrolytic bath (5), the inlet intercommunication of electrolytic bath (5) has and contains DMSO waste water storage tank (1), perhaps, the inlet intercommunication of electrolytic bath (5) has and contains DMF waste water storage tank (2), perhaps, contains DMSO waste water storage tank (1) and contains DMF waste water storage tank (2) and communicate blending tank (3) respectively, blending tank (3) intercommunication electrolytic bath (5), wherein:
the anode of the electrolytic cell (5) is a diamond film electrode, and the cathode of the electrolytic cell (5) is a titanium electrode.
2. The system for treating high ammonia nitrogen wastewater by using the diamond film electrode as claimed in claim 1, wherein: the electrolytic cell (5) is sequentially communicated with the transfer tank (4) and the A/O cell (6).
3. The system for treating high ammonia nitrogen wastewater by using the diamond film electrode as claimed in claim 2, wherein: the A/O pool (6) is communicated with a low-concentration wastewater inlet pipe.
4. The system for treating high ammonia nitrogen wastewater by using the diamond film electrode as set forth in any one of claims 1 to 3, wherein: the interelectrode voltage of the electrolytic cell (5) is 4-5V; the interpolar current of the electrolytic cell (5) is 900-1000A; the interpolar current density of the electrolytic cell (5) is 1000-2(ii) a The electrolysis time is 20-36 h.
5. A method for treating high ammonia nitrogen wastewater by using a diamond film electrode is characterized by comprising the following steps: electrolyzing wastewater containing DMSO and/or wastewater containing DMF to obtain low ammonia nitrogen wastewater, wherein:
the anode of the electrolysis is a diamond film electrode, and the cathode of the electrolysis is a titanium electrode;
the COD of the wastewater containing DMSO is 30000-110000mg/L, and the total nitrogen is 500-3500 mg/L;
the COD of the DMF-containing wastewater is 40000-100000mg/L, and the total nitrogen is 10000-20000 mg/L.
6. The method for treating high ammonia nitrogen wastewater by using the diamond film electrode as claimed in claim 5, wherein the method comprises the following steps: and (3) sequentially carrying out transfer and A/O treatment on the low ammonia nitrogen treated water to obtain treated water.
7. The method for treating high ammonia nitrogen wastewater by using the diamond film electrode as claimed in claim 6, wherein the method comprises the following steps: introducing low-concentration wastewater in the A/O treatment stage.
8. The method for treating high ammonia nitrogen wastewater by using the diamond film electrode as claimed in claim 7, wherein the method comprises the following steps: low concentration waste waterThe treatment capacity of the reactor is 1200-1400m3/d。
9. The method for treating high ammonia nitrogen wastewater by using the diamond film electrode according to any one of claims 5 to 8, wherein the method comprises the following steps: the treatment capacity of the wastewater containing DMSO and/or DMF is 80-100m3/d。
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