CN114380366A - Advanced oxidation treatment process and equipment for phosphorus-containing flame retardant wastewater - Google Patents
Advanced oxidation treatment process and equipment for phosphorus-containing flame retardant wastewater Download PDFInfo
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- CN114380366A CN114380366A CN202210086269.0A CN202210086269A CN114380366A CN 114380366 A CN114380366 A CN 114380366A CN 202210086269 A CN202210086269 A CN 202210086269A CN 114380366 A CN114380366 A CN 114380366A
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- 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
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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- 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
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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Abstract
The invention discloses an advanced oxidation treatment process and equipment for phosphorus-containing flame retardant wastewater, which are characterized by comprising the following steps: a first processing system and a second processing system; the first processing system includes: the system comprises a first advanced oxidation treatment unit, a first circulating treatment tank, a first heat exchanger and a first pump body; the first heat exchange is connected with a first advanced oxidation treatment unit, the first circulating treatment tank is connected with the first heat exchange, and the first pump body is respectively connected with the first circulating treatment tank and the first advanced oxidation treatment unit; the invention has the advantages that the conversion from organic phosphorus to inorganic phosphorus can be completed by adopting the advanced oxidation treatment process of the boron-doped diamond electrode, the harmless treatment of the phosphorus-containing flame retardant wastewater is finally realized, the secondary pollution transfer is avoided, the hydroxyl free radical generated by the boron-doped diamond electrode has strong oxidizing property, the high efficiency on pollutants with high concentration is realized, the current utilization rate is improved, and the treatment cost is reduced.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an advanced oxidation treatment process and advanced oxidation treatment equipment for phosphorus-containing flame retardant wastewater.
Background
The phosphate flame retardant is an important branch in the field of flame retardants, has the remarkable characteristics of lasting flame retardant effect, good compatibility with polymer base materials, water resistance, weather resistance, heat resistance, migration resistance and the like, and becomes one of the most important and widely applied flame retardants at present. In addition, most phosphate flame retardants have the characteristics of low smoke, no toxicity, low halogen (or no halogen), and the like, and accord with the development direction of flame retardants, so the phosphate flame retardants have good development prospects.
Phosphate ester flame retardant usually produces a large amount of refractory organic wastewater in the production process. The wastewater is characterized by higher COD concentration and more insoluble and refractory organic matters and total phosphorus. The total phosphorus mainly comprises organic phosphorus or organic phosphate compound with large molecular weight and difficult treatment and inorganic phosphorus. Inorganic phosphorus can be removed by a flocculation precipitation method; the treatment of organic phosphorus is usually carried out by converting organic phosphorus into inorganic phosphorus and then removing the inorganic phosphorus by flocculation precipitation. The phosphate ester is chemically stable, difficult to be oxidized and incapable of being biochemically produced. Common oxidation methods such as fenton, ozone, micro-electrolysis and the like cannot perform oxidative decomposition, physical treatment methods such as carbon adsorption and graphene adsorption and transfer organic phosphorus, but organic phosphorus is not treated, only transfer of secondary pollution is realized, and the method is not allowed and becomes a difficult problem in the industry.
The advanced oxidation process can degrade organophosphorus or organophosphate compounds due to its strong oxidation ability. The diamond film electrode used in the advanced oxidation process is also called a boron-doped diamond electrode, and the diamond has the most stable chemical structure and boron-doped conductivity, so that the diamond film electrode has extremely strong oxidation capability and high stability. However, the current density of the diamond membrane electrode in the sewage treatment process is very high, generally stable at 2000 a/sq m, and the power consumption is large, so that the treatment cost is too high, especially in the range of low COD value, COD is less than 5000mg/L, and the current utilization rate is less than 20%, so that the diamond membrane electrode cannot be operated economically.
Disclosure of Invention
The invention aims to solve the problems, designs an advanced oxidation treatment process and equipment for phosphorus-containing flame retardant wastewater, and solves the problems that the current density of the existing diamond membrane electrode in the sewage treatment process is very high, generally stable at 2000A/sq m, large power consumption and overhigh treatment cost, especially in the range of low COD value, COD <5000mg/L, current utilization rate less than 20 percent and economic operation cannot be realized.
The technical scheme of the invention for realizing the aim is as follows: an advanced oxidation treatment process of phosphorus-containing flame retardant wastewater, comprising the following steps: a first processing system and a second processing system;
the first processing system includes: the system comprises a first advanced oxidation treatment unit, a first circulating treatment tank, a first heat exchanger and a first pump body;
the first heat exchange is connected with a first advanced oxidation treatment unit, the first circulating treatment tank is connected with the first heat exchange, and the first pump body is respectively connected with the first circulating treatment tank and the first advanced oxidation treatment unit;
the second processing unit includes: the second advanced oxidation treatment unit, the second circulating treatment tank, the second heat exchanger, the second pump body, the auxiliary reagent feeding tank and the third pump body;
the second heat exchange is connected in the advanced oxidation processing unit of second, the second circulation is handled the jar and is connected in the second heat exchange, and with first pump body coupling, the one end of the third pump body is connected on the second circulation is handled the jar, the other end at the third pump body is connected to the supplementary reagent material feeding tank, the one end of the second pump body is connected at the second circulation and is handled the jar, and the other end is connected at the advanced oxidation processing unit of second.
Preferably, the second advanced oxidation treatment unit and the first advanced oxidation treatment unit are connected to an exhaust gas purification system and a solar cell system, respectively.
Preferably, the second advanced oxidation treatment unit treats sewage by using a boron-doped diamond electrode, the current intensity is adjusted to 200-500A/m, and organic phosphorus is completely converted into inorganic phosphorus.
Preferably, the second advanced oxidation treatment unit adopts a boron-doped diamond electrode to treat the sewage, the current intensity is adjusted to 200A/sq m-500A/sq m, and the sewage enters the biochemical treatment unit under the condition that BOD/COD is more than 0.7.
Preferably, the second advanced oxidation treatment unit adds sulfides, such as sodium peroxodisulfate and sodium sulfate, but not limited to these two sulfides, organic phosphorus and sulfide according to a ratio of 1: the molecular weight ratio of 20, through the synergy of the sulfate radical (. SO4) generated by electrochemistry and the hydroxyl radical BDD (. OH) generated by diamond, the current density of 1000-2000A/sq.m, preferably 2000A/sq.m, can efficiently complete the conversion of residual organic phosphorus.
Preferably, the second advanced oxidation treatment unit adds ferrous ions into the boron-doped diamond electrode treatment unit, the concentration of the ferrous ions is 0.25-1.0mM Fe2+, the current density of 1000-.
Preferably, the auxiliary reagent feeding tank is provided with a quantitative adding mechanism;
the quantitative addition mechanism includes: the device comprises a shell, a bearing plate, a limiting plate, a plurality of first material cylinders, a plurality of second material cylinders, an electromagnetic valve and a rotating structure;
the top at the auxiliary reagent charging tank is installed to the casing, what the loading board removed along upper and lower direction installs the inside at the casing, the limiting plate is installed in the inside of frame, a plurality of first feed cylinder sets up respectively on the top of loading board, and mobilizable the installation is on the limiting plate, the top at the loading board is installed to the second feed cylinder, the bottom at the second feed cylinder is installed to the solenoid valve, revolution mechanic installs on the casing.
Preferably, the rotating structure includes: the device comprises a frame, a rotating motor, a limiting ring, a gear ring, a driving gear and a pitch assembly;
the frame mount is in one side of casing, the rotating electrical machines is installed in the inside of frame, the rotatable inside of installing at the casing of spacing ring, the ring gear is installed on the spacing ring, driving gear suit is on the drive end of rotating electrical machines, and with ring gear intermeshing, a plurality of unloading hole has been seted up on the ring gear, the top subassembly is installed on the loading board.
Preferably, the pitch assembly comprises: the hinge comprises a plurality of hinged supports, a plurality of rollers and a plurality of lugs;
the hinge seats are respectively installed at the bottom end of the bearing plate, the idler wheels are respectively installed on the hinge seats, and the convex blocks are installed on the gear ring.
Preferably, a stirring mechanism is further installed inside the auxiliary reagent feeding tank;
the stirring mechanism includes: the device comprises a driving motor, a stirring shaft, a plurality of connecting rods, a plurality of fan blades and a vibrating motor;
the utility model discloses a quick-witted, including auxiliary reagent and vibrating motor, driving motor installs in the bottom that auxiliary reagent adds the jar, the (mixing) shaft is installed in the inside that auxiliary reagent adds the jar, and connects in driving motor's drive end, a plurality of the connecting rod is installed respectively on the (mixing) shaft, a plurality of the flabellum is installed respectively on a plurality of on the connecting rod, vibrating motor installs in the outside that auxiliary reagent adds the jar.
The advanced oxidation treatment process and the equipment for the phosphorus-containing flame retardant wastewater, which are manufactured by the technical scheme of the invention, adopt the advanced oxidation treatment process of the boron-doped diamond electrode, can complete the conversion from organic phosphorus to inorganic phosphorus, finally realize the harmless treatment of the phosphorus-containing flame retardant wastewater without secondary pollution transfer, although hydroxyl radicals generated by the boron-doped diamond electrode have strong oxidation property and have high efficiency on pollutants with high concentration, such as high-concentration organic phosphorus, along with the progress of the treatment process, a large amount of organic phosphorus is oxidized into inorganic phosphorus, the content of the organic phosphorus in the wastewater is lower and lower, the contact frequency of the organic phosphorus and the hydroxyl radicals is lower and lower, the utilization rate of high current density is lower, the advanced oxidation treatment effect is very good, the removal rate reaches 99.95 percent, and the total phosphorus contained in the treated wastewater meets the comprehensive wastewater discharge standard, the utilization rate of the current is improved, and the processing cost is reduced.
Drawings
FIG. 1 is a schematic flow diagram of an advanced oxidation treatment process of phosphorus-containing flame retardant wastewater according to the present invention.
FIG. 2 is a schematic view of the auxiliary reagent feeding tank according to the present invention.
Fig. 3 is a partially enlarged view of fig. 2 according to the present invention.
FIG. 4 is a schematic bottom view of the carrier plate of the present invention.
Fig. 5 is a schematic sectional front view of a second cartridge according to the present invention.
Fig. 6 is a schematic top sectional view of the present invention.
In the figure: 1. the device comprises a first advanced oxidation treatment unit, 2, a first circulating treatment tank, 3, a first heat exchange, 4, a first pump body, 5, a second advanced oxidation treatment unit, 6, a second circulating treatment tank, 7, a second heat exchange, 8, a second pump body, 9, an auxiliary reagent feeding tank, 10, a third pump body, 11, a tail gas purification system, 12, a solar cell system, 101, a shell, 102, a bearing plate, 103, a limiting plate, 104, a first charging barrel, 105, a second charging barrel, 106, an electromagnetic valve, 107, a frame, 108, a rotating motor, 109, a limiting ring, 110, a gear ring, 111, a driving gear, 112, a hinge base, 113, a roller, 114, a bump, 115, a driving motor, 116, a stirring shaft, 117, a connecting rod, 118, a fan blade, 119 and a vibrating motor.
Detailed Description
The invention is described in detail with reference to the accompanying drawings, and as shown in figures 1-6, a process and equipment for advanced oxidation treatment of phosphorus-containing flame retardant wastewater.
An advanced oxidation treatment process of phosphorus-containing flame retardant wastewater, comprising the following steps: a first processing system and a second processing system;
the first processing system includes: the device comprises a first advanced oxidation treatment unit 1, a first circulating treatment tank 2, a first heat exchanger 3 and a first pump body 4;
the first heat exchanger 3 is connected to the first advanced oxidation treatment unit 1, the first circulation treatment tank 2 is connected to the first heat exchanger 3, and the first pump 4 is connected to the first circulation treatment tank 2 and the first advanced oxidation treatment unit 1, respectively;
the second processing unit includes: the system comprises a second advanced oxidation treatment unit 5, a second circulating treatment tank 6, a second heat exchanger 7, a second pump body 8, an auxiliary reagent feeding tank 9 and a third pump body 10;
Preferably, an exhaust gas purification system 11 and a solar cell system 12 are connected to the second advanced oxidation treatment unit 5 and the first advanced oxidation treatment unit 1, respectively.
In the specific implementation process, it should be noted that the first advanced oxidation treatment unit 1 doped with the boron-doped diamond film operates, wastewater enters the first advanced oxidation treatment unit 1 in the first circulation batch treatment tank in an internal circulation mode, and the organic phosphorus or the organic phosphate fully contacts with hydroxyl radicals generated on the surface of the boron-doped diamond film electrode, so that electrons are deprived, the stable structure is lost, and the wastewater is gradually oxidized into inorganic phosphorus in the continuous contact reaction of the hydroxyl radicals.
The first advanced oxidation treatment unit 1 of the boron-doped diamond film is operated automatically and driven by the first pump body 4 to realize circular treatment;
in the wastewater treatment process, the first advanced oxidation treatment unit 1 doped with the boron-doped diamond film generates tail gas such as hydrogen, carbon dioxide and the like, and the tail gas is treated by the tail gas purification system 11 and discharged outdoors.
The first advanced oxidation treatment unit 1 doped with the boron diamond film generates chemical decomposition reaction, the electrode is heated, the water temperature is increased, and the temperature is reduced to be within 75 ℃ through the heat exchanger in the wastewater treatment process.
The first advanced oxidation treatment unit 1 and the second advanced oxidation treatment unit 5 need electric energy, a daytime power supply is from solar energy, and a nighttime power supply can be from a power grid, so that the daytime treatment cost can be reduced to the minimum, solar direct current is adopted, the wastewater treatment cost is lower, and the nighttime power supply can be from the power grid.
After the first advanced oxidation treatment unit 1 has the BOD/COD of the wastewater greater than 0.4, the wastewater can be transported to the second circulating batch treatment tank of the first advanced oxidation treatment unit 1 through the first pump body 4 and subjected to circulating treatment in the first advanced oxidation treatment unit 1 through the second pump body 8.
According to the first selection scheme of the second advanced oxidation treatment unit 5, the sewage is treated by using the boron-doped diamond electrode, the current intensity is adjusted to 200-500A/M, organic phosphorus is completely converted into inorganic phosphorus, the current utilization rate is improved, and the treatment cost is reduced.
And in the second selection scheme of the second advanced oxidation treatment unit 5, the boron-doped diamond electrode is adopted to treat the sewage, the current intensity is adjusted to 200-500A/m, and the sewage enters the biochemical treatment unit under the condition that BOD/COD is greater than 0.7, so that the current utilization rate is improved, and the treatment cost is reduced.
And in the third selection scheme of the second advanced oxidation treatment unit 5, sulfides such as sodium peroxodisulfate and sodium sulfate are added into the boron-doped diamond electrode treatment unit, but the two sulfides are not limited, and organic phosphorus and the sulfides are mixed according to the ratio of 1: the molecular weight ratio of 20, sulfide is conveyed to the unit through the third pump body 10, sulfate radicals are generated in the electrochemical process of the 7-stage oxidation treatment unit and are cooperated with hydroxyl radicals generated by diamond, organic phosphorus is decomposed and converted into inorganic phosphorus by adopting the current density of 1000-2000A/sq m, preferably 2000A/sq m, the sulfate radicals (SO 4) generated by electrochemistry are cooperated with the hydroxyl radicals BDD (OH) generated by diamond, the current density of 1000-2000A/sq m, preferably 2000A/sq m, can efficiently finish the conversion of residual organic phosphorus, improve the utilization rate of current and reduce the treatment cost.
The fourth selection scheme of the second advanced oxidation treatment unit 5 is that divalent iron ions with the concentration of 0.25-1.0mM Fe2+ are added into the boron-doped diamond electrode treatment unit, the current density of 1000-2000A/sq m is adopted, preferably 2000A/sq m, more hydroxyl radicals Fe (III) (. OH) are generated in an auxiliary manner, organic phosphorus is captured together with hydroxyl radicals BDD (. OH) generated by the diamond film, the conversion of the residual organic phosphorus is completed efficiently, the current utilization rate is improved, and the treatment cost is reduced;
ferrous ions are added into the unit, the concentration is 0.25-1.0mM Fe2+, more hydroxyl radicals Fe (III) (. OH) are generated in an auxiliary way, organic phosphorus is captured together with the hydroxyl radicals BDD (. OH) generated by the diamond film, and the current density of 1000-2000A/sq.m, preferably 2000A/sq.m, is adopted.
The organic phosphorus or organic phosphate after advanced oxidation treatment is converted into inorganic phosphorus, and the inorganic phosphorus can be removed by adopting a polyferric flocculation precipitation process.
The advanced oxidation treatment effect is very good, the removal rate reaches 99.95 percent, and the total phosphorus contained in the treated wastewater meets the Integrated wastewater discharge Standard.
The auxiliary reagent feeding tank 9 is provided with a quantitative feeding mechanism; the quantitative addition mechanism includes: the device comprises a shell 101, a bearing plate 102, a limiting plate 103, a plurality of first material cylinders 104, a plurality of second material cylinders 105, a solenoid valve 106 and a rotating structure;
the top at supplementary reagent feeding tank 9 is installed to casing 101, the inside at casing 101 of installing that loading board 102 removed along the upper and lower direction, the inside at frame 107 is installed to limiting plate 103, a plurality of first feed cylinder 104 sets up the top at loading board 102 respectively, and mobilizable the installation is on limiting plate 103, the top at loading board 102 is installed to second feed cylinder 105, the bottom at second feed cylinder 105 is installed to solenoid valve 106, revolution mechanic installs on casing 101.
In the specific implementation process, it should be noted that, when adding the reagent into the auxiliary reagent feeding tank 9, the powdered reagent medicament is stored in the first cartridge 104, the second cartridge 105 is used for storing the medicament of the liquid, when adding the liquid medicament into the auxiliary reagent feeding tank 9, then the electromagnetic valve 106 is opened, the liquid medicament is then added into the auxiliary reagent feeding tank 9, the time that the electromagnetic valve 106 is opened is fixed, then the medicament of the liquid is quantitatively added into the inside of the auxiliary reagent feeding tank 9, when adding the powdered medicament into the inside of the auxiliary reagent feeding tank 9 through the rotating structure, the limiting plate 103 is used for limiting the first cartridge 104 and the second cartridge 105, and the bearing plate 102 is used for supporting the first cartridge 104 and the second cartridge 105.
Preferably, further, the rotating structure includes: a frame 107, a rotating motor 108, a limit ring 109, a gear ring 110, a driving gear 111 and a pitch assembly;
the frame 107 is installed in one side of casing 101, the inside at frame 107 is installed to rotating electrical machines 108, the rotatable inside of installing at casing 101 of spacing ring 109, ring gear 110 is installed on spacing ring 109, driving gear 111 suit is on rotating electrical machines 108's drive end, and with ring gear 110 intermeshing, a plurality of unloading hole has been seted up on ring gear 110, the top subassembly is installed on loading board 102.
In the specific implementation process, it should be noted that, when the powdered medicament is added, the rotating motor 108 starts to rotate, the driving gear 111 is driven to rotate, the driving gear 111 and the gear ring 110 are meshed with each other, the gear ring 110 rotates along with the gear ring, the gear ring 110 rotates inside the housing 101 under the action of the limiting ring 109, the blanking hole on the gear ring 110 corresponds to the blanking hole of the cartridge, so that the powdered material inside the first cartridge 104 falls into the auxiliary reagent feeding tank 9, in the blanking process, the driving assembly drives the bearing plate 102 to reciprocate up and down, and further the powdered medicament in the first cartridge 104 is prevented from remaining on the wall surface of the first cartridge 104, and then the rotating motor 108 starts to rotate reversely, so that the gear ring 110 is reset, and then the dosing of the powdered medicament is completed.
Preferably, further, the pitch assembly includes: a plurality of hinged supports 112, a plurality of rollers 113 and a plurality of lugs 114;
the hinged supports 112 are respectively installed at the bottom end of the bearing plate 102, the rollers 113 are respectively installed on the hinged supports 112, and the protrusions 114 are installed on the gear ring 110.
In the specific implementation process, it should be noted that, during the rotation process of the ring gear 110, the protrusion 114 mounted on the ring gear 110 rotates along with the ring gear 110, the protrusion 114 pushes the roller 113, the roller 113 can rotate continuously through the hinge 112, then the bearing plate 102 is pushed, the bearing plate 102 is pushed along with the roller, the first cartridge 104 and the second cartridge 105 at the upper end of the bearing plate bump, and therefore the powdered medicament in the first cartridge 104 is prevented from remaining on the wall surface of the first cartridge 104.
Preferably, further, a stirring mechanism is further installed inside the auxiliary reagent feeding tank 9;
the stirring mechanism includes: a driving motor 115, a stirring shaft 116, a plurality of connecting rods 117, a plurality of fan blades 118 and a vibration motor 119;
driving motor 115 installs in the bottom that auxiliary reagent adds feed tank 9, the inside at auxiliary reagent adds feed tank 9 is installed to (mixing) shaft 116, and connects in driving motor 115's drive end, a plurality of connecting rod 117 installs respectively on (mixing) shaft 116, a plurality of flabellum 118 installs respectively a plurality of on the connecting rod 117, vibrating motor 119 installs in the outside that auxiliary reagent adds feed tank 9.
In the concrete implementation process, it should be noted that, after the powdered reagent and the liquid reagent are added into the auxiliary reagent feeding tank 9, the driving motor 115 starts to rotate to drive the stirring shaft 116 to rotate, so that the connecting rod 117 rotates inside the auxiliary reagent feeding tank 9, so that the reagents are mixed, the mixed reagents are conveyed to the inside of the second circulation batch processing tank through the third pump, and in the stirring and mixing process, the vibrating motor 119 vibrates, so that the mixing effect is improved.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (10)
1. An advanced oxidation treatment process of phosphorus-containing flame retardant wastewater is characterized by comprising the following steps: a first processing system and a second processing system;
the first processing system includes: the system comprises a first advanced oxidation treatment unit, a first circulating treatment tank, a first heat exchanger and a first pump body;
the first heat exchange is connected with a first advanced oxidation treatment unit, the first circulating treatment tank is connected with the first heat exchange, and the first pump body is respectively connected with the first circulating treatment tank and the first advanced oxidation treatment unit;
the second processing unit includes: the second advanced oxidation treatment unit, the second circulating treatment tank, the second heat exchanger, the second pump body, the auxiliary reagent feeding tank and the third pump body;
the second heat exchange is connected in the advanced oxidation processing unit of second, the second circulation is handled the jar and is connected in the second heat exchange, and with first pump body coupling, the one end of the third pump body is connected on the second circulation is handled the jar, the other end at the third pump body is connected to the supplementary reagent material feeding tank, the one end of the second pump body is connected at the second circulation and is handled the jar, and the other end is connected at the advanced oxidation processing unit of second.
2. The advanced oxidation treatment process of phosphorus-containing flame retardant wastewater according to claim 1, wherein the second advanced oxidation treatment unit and the first advanced oxidation treatment unit are respectively connected with an exhaust gas purification system and a solar cell system.
3. The advanced oxidation treatment process of phosphorus-containing flame retardant wastewater as claimed in claim 1, wherein the second advanced oxidation treatment unit treats wastewater with boron-doped diamond electrode, the current intensity is adjusted to 200-500A/m, and organic phosphorus is completely converted into inorganic phosphorus.
4. The advanced oxidation treatment process of phosphorus-containing flame retardant wastewater according to claim 1, wherein the second advanced oxidation treatment unit adopts a boron-doped diamond electrode to treat the wastewater, the current intensity is adjusted to 200-500A/m, and the wastewater enters the biochemical treatment unit under the condition that BOD/COD is greater than 0.7.
5. The advanced oxidation treatment process of phosphorus-containing flame retardant wastewater as claimed in claim 1, wherein the second advanced oxidation treatment unit is configured to add sulfides such as sodium peroxodisulfate and sodium sulfate, but not limited to these two sulfides, organic phosphorus and sulfide according to a ratio of 1: the molecular weight ratio of 20, the sulfate radical generated by electrochemistry and the hydroxyl radical BDD generated by diamond are cooperated, the current density of 1000-2000A/sq m is adopted, and the conversion of residual organic phosphorus can be efficiently completed.
6. The advanced oxidation treatment process of phosphorus-containing flame retardant wastewater as claimed in claim 1, wherein the second advanced oxidation treatment unit adds ferrous ions into the boron-doped diamond electrode treatment unit, the concentration of the ferrous ions is 0.25-1.0mM Fe2+, the current density of 1000- & lt2000A/sq.m is adopted, more hydroxyl radicals Fe (III) (& OH) are generated in an auxiliary manner, and the hydroxyl radicals BDD (& OH) generated by the diamond film capture organic phosphorus together, so that the conversion of residual organic phosphorus is completed with high efficiency.
7. The equipment applied to the advanced oxidation treatment process of phosphorus-containing flame retardant wastewater in claim 1, wherein the auxiliary reagent feeding tank is provided with a quantitative adding mechanism;
the quantitative addition mechanism includes: the device comprises a shell, a bearing plate, a limiting plate, a plurality of first material cylinders, a plurality of second material cylinders, an electromagnetic valve and a rotating structure;
the top at the auxiliary reagent charging tank is installed to the casing, what the loading board removed along upper and lower direction installs the inside at the casing, the limiting plate is installed in the inside of frame, a plurality of first feed cylinder sets up respectively on the top of loading board, and mobilizable the installation is on the limiting plate, the top at the loading board is installed to the second feed cylinder, the bottom at the second feed cylinder is installed to the solenoid valve, revolution mechanic installs on the casing.
8. The apparatus of claim 7, wherein the rotating structure comprises: the device comprises a frame, a rotating motor, a limiting ring, a gear ring, a driving gear and a pitch assembly;
the frame mount is in one side of casing, the rotating electrical machines is installed in the inside of frame, the rotatable inside of installing at the casing of spacing ring, the ring gear is installed on the spacing ring, driving gear suit is on the drive end of rotating electrical machines, and with ring gear intermeshing, a plurality of unloading hole has been seted up on the ring gear, the top subassembly is installed on the loading board.
9. The apparatus of claim 7, wherein the pitch assembly comprises: the hinge comprises a plurality of hinged supports, a plurality of rollers and a plurality of lugs;
the hinge seats are respectively installed at the bottom end of the bearing plate, the idler wheels are respectively installed on the hinge seats, and the convex blocks are installed on the gear ring.
10. The apparatus for advanced oxidation treatment process of phosphorus-containing flame retardant wastewater according to claim 7, wherein the inside of the auxiliary reagent feeding tank is further provided with a stirring mechanism;
the stirring mechanism includes: the device comprises a driving motor, a stirring shaft, a plurality of connecting rods, a plurality of fan blades and a vibrating motor;
the utility model discloses a quick-witted, including auxiliary reagent and vibrating motor, driving motor installs in the bottom that auxiliary reagent adds the jar, the (mixing) shaft is installed in the inside that auxiliary reagent adds the jar, and connects in driving motor's drive end, a plurality of the connecting rod is installed respectively on the (mixing) shaft, a plurality of the flabellum is installed respectively on a plurality of on the connecting rod, vibrating motor installs in the outside that auxiliary reagent adds the jar.
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