CN209957615U - Iron-carbon micro-electrolysis cell and organic fluorine-containing wastewater treatment system comprising same - Google Patents
Iron-carbon micro-electrolysis cell and organic fluorine-containing wastewater treatment system comprising same Download PDFInfo
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- CN209957615U CN209957615U CN201920788460.3U CN201920788460U CN209957615U CN 209957615 U CN209957615 U CN 209957615U CN 201920788460 U CN201920788460 U CN 201920788460U CN 209957615 U CN209957615 U CN 209957615U
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Abstract
The utility model provides an iron-carbon micro-electrolysis cell and contain its contain organic fluorine effluent disposal system relates to fluorine chemical wastewater treatment technical field. The iron-carbon micro-electrolysis cell comprises a water distribution area, a filler area and a clear water area which are sequentially arranged from top to bottom, and an aeration circulating cylinder which is sequentially arranged in the water distribution area, the filler area and the clear water area in a penetrating manner. The iron-carbon micro-electrolysis cell utilizes the micro-electrolysis filler filled in the filler area to carry out micro-electrolysis treatment on the organic fluorine in the wastewater under the condition of no electrification of the wastewater containing the organic fluorine, thereby ensuring the long-term stable operation of carrying out the micro-electrolysis treatment on the industrial wastewater containing the organic fluorine. In addition, contain this little electrolysis cell of iron carbon's contain organic fluorine effluent disposal system through carrying out orderly physics, chemistry, biochemical treatment to containing organic fluorine waste water, carried out advanced treatment to pollutants such as fluoride, organic matter, suspended solid in the waste water, greatly promoted the purification efficiency and the purification degree that contain organic fluorine waste water treatment.
Description
Technical Field
The utility model relates to a fluorine chemical wastewater treatment technical field especially relates to an iron-carbon micro-electrolysis cell and contain its contain organic fluorine effluent disposal system.
Background
In recent years, with the development of the organic fluorine industry, a large amount of organic fluorine-containing wastewater is generated, and the wastewater is mainly derived from alkaline tower wastewater, emergency adsorption tower wastewater, recycled alkaline tower wastewater, resin, emulsion discharge wastewater, electrolytic water scrubber wastewater, waste gas alkaline tower discharge wastewater and the like. The organic fluorine-containing wastewater has the characteristics of high content of chloride ions, fluoride ions, organic fluorides and the like, and can generate fluorine pollution to the surrounding water environment if the organic fluorine-containing wastewater is directly discharged into the environment.
At present, there are several methods for treating wastewater containing organic fluorine, and the methods mainly used are chemical precipitation and adsorption. The chemical precipitation method is generally used for treating high-concentration electrodeless fluorine-containing wastewater, and is simple to operate, low in cost and good in effect, so that the chemical precipitation method is widely used. The adsorption method is mainly suitable for advanced treatment of drinking water with small water amount, and has relatively high treatment cost and complicated operation. In addition, the treatment by the method has a problem that organic fluorine in the fluorine-containing wastewater is difficult to be fully converted into inorganic fluorine and cannot be removed by precipitation, and the concentration of the effluent fluoride cannot meet the national comprehensive wastewater discharge standard (GB8978-1996), namely the requirement that the concentration of the effluent fluoride is less than 10mg/L cannot be met.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide an iron-carbon micro-electrolysis cell, this iron-carbon micro-electrolysis cell structural design is reasonable, and hydraulic load is high, has guaranteed to carry out the long-term stable effective operation of little electrolytic treatment to the industrial waste water that contains organic fluorine.
The hydraulic load is a term of art in the environment, meaning: the amount of wastewater that can be treated per unit volume of filter material or per unit area per day.
A second object of the utility model is to provide a processing system to containing organic fluorine waste water, wastewater treatment system carries out orderly physics, chemistry, biochemical treatment through containing organic fluorine waste water, has carried out advanced treatment to pollutants such as fluoride, organic matter, suspended solid in the waste water, has greatly promoted the purification efficiency and the purification degree that contain organic fluorine waste water.
The utility model provides an iron-carbon micro-electrolysis cell, which comprises a water distribution area, a filler area and a clear water area which are sequentially arranged from top to bottom, and an aeration circulating cylinder which is sequentially arranged in the water distribution area, the filler area and the clear water area;
the iron-carbon micro-electrolysis cell is also provided with a water inlet and a water outlet, the water inlet is communicated with the water distribution area, and the water outlet is communicated with the clear water area.
Furthermore, a grating plate is arranged between the filler area and the clear water area.
Further, a backwashing air inlet, a backwashing water inlet and a backwashing water outlet are also formed in the iron-carbon micro-electrolysis cell;
furthermore, the backwashing water inlet is communicated with the clear water area; the backwashing water outlet is communicated with the water distribution area; and the backwashing air inlet is communicated with the packing area.
Further, an aerator is arranged at the bottom of the aeration circulating cylinder, and an air inlet is arranged at the top of the aeration circulating cylinder.
The utility model provides a wastewater treatment system containing organic fluorine, which mainly comprises an oxidation unit, a chemical fluorine removal unit, a biochemical treatment unit and a deep treatment unit which are connected in sequence;
the oxidation unit comprises the iron-carbon micro-electrolysis cell.
Furthermore, the oxidation unit is mainly formed by connecting the iron-carbon micro-electrolysis cell and the Fenton reaction cell;
the chemical fluorine removal unit mainly comprises a primary fluorine removal tank, a secondary fluorine removal tank and a pH readjustment tank which are connected in sequence;
the biochemical treatment unit is mainly composed of A2the/O reaction tank and the secondary sedimentation tank are connected with each other;
the advanced treatment unit mainly comprises a high-density tank, an ozone catalytic oxidation tank and a biological aerated filter which are connected in sequence.
Furthermore, the ozone catalytic oxidation pond in the advanced treatment unit is a solid-phase ozone catalytic oxidation pond.
Preferably, the aeration biological filter in the advanced treatment unit is an isolated aeration circulation biological filter.
Further, the wastewater treatment system also comprises a sludge treatment unit.
Furthermore, the sludge treatment unit is respectively communicated with a primary defluorination tank, a secondary sedimentation tank of the biochemical treatment unit and a high-density tank pipeline of the advanced treatment unit of the chemical defluorination unit.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides an iron-carbon micro-electrolysis cell, iron-carbon micro-electrolysis cell is including the water distribution district, filler district and the clear water district that from top to bottom set gradually to and wear to locate in proper order the aeration circulation section of thick bamboo in water distribution district, filler district and clear water district. The iron-carbon micro-electrolysis cell forms a good process for treating wastewater by a galvanic cell by utilizing a metal corrosion principle method, industrial wastewater containing organic fluorine enters a water distribution area through a water inlet and then enters a filler area, micro-electrolysis treatment is carried out on the wastewater by utilizing micro-electrolysis filler filled in the filler area under the condition of no power supply, and produced water is discharged after passing through a water outlet at the bottom; meanwhile, water in the clear water area flows back to the water distribution area in a circulating manner under the aeration lifting action of the aeration circulating cylinder, so that pollutants can be distributed more uniformly on the filter material layer, and the hydraulic load of the reactor is improved. The iron-carbon micro-electrolysis cell has reasonable structural design and high hydraulic load, and ensures the long-term stable and effective operation of micro-electrolysis treatment on the industrial wastewater containing organic fluorine.
The utility model provides a contain organic fluorine effluent disposal system mainly connects in order by oxidation unit, chemical defluorination unit, biochemical treatment unit, degree of depth processing unit and constitutes, wherein, the oxidation unit includes above-mentioned iron-carbon micro-electrolysis cell. Waste water treatment system carries out orderly physics, chemistry, biochemical treatment through containing organic fluorine waste water, has carried out advanced treatment to pollutants such as fluoride, organic matter, suspended solid in the waste water, has greatly promoted the purification efficiency and the purification degree that contain organic fluorine waste water.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an iron-carbon micro-electrolysis cell provided in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of an iron-carbon micro-electrolysis cell comprising a backwashing air inlet, a backwashing water inlet and a backwashing water outlet, which is provided by the embodiment 1 of the invention;
FIG. 3 is a schematic structural view of an organic fluorine-containing wastewater treatment system provided in example 2 of the present invention;
FIG. 4 is a schematic structural view of an organic fluorine-containing wastewater treatment system including a sludge treatment unit according to embodiment 2 of the present invention.
Icon: 1002-water distribution area; 1006-a packing region; 1004-clear water area; 1001-water inlet; 1003-water outlet; 1005-grid plate; 1012-backwashing air inlets; 1010-backwashing the water inlet; 1011-backwashing water discharge port; 1007-an aeration circulation cylinder; 1009-an aerator; 1008-air intake; 1-an oxidation unit; 2-a chemical defluorination unit; 3-a biochemical treatment unit; 4-a depth processing unit; 100-iron-carbon micro-electrolysis cell; 110-a Fenton reaction tank; 201-first-level defluorination pool(ii) a 202-a secondary defluorination tank; 203-pH is returned to the pool; 301-A2an/O reaction tank; 302-a secondary sedimentation tank; 401-high density pool; 402-an ozone catalytic oxidation tank; 403-biological aerated filter; 5-sludge treatment unit.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
According to one aspect of the utility model, the iron-carbon micro-electrolysis cell 100 comprises a water distribution area 1002, a filler area 1006 and a clear water area 1004 which are sequentially arranged from top to bottom, and an aeration circulating cylinder 1007 which is sequentially arranged through the water distribution area 1002, the filler area 1006 and the clear water area 1004;
the iron-carbon micro-electrolysis cell 100 is further provided with a water inlet 1001 and a water outlet 1003, the water inlet 1001 is communicated with the water distribution area 1002, and the water outlet 1003 is communicated with the clear water area 1004.
The utility model provides a little electrolytic bath 100 of iron carbon, little electrolytic bath 100 of iron carbon is including the water distribution district 1002, the district 1006 and the clear water district 1004 that set gradually from top to bottom to and wear to locate in proper order the aeration circulation section of thick bamboo 1007 in water distribution district 1002, the district 1006 and the clear water district 1004 of packing. The iron-carbon micro-electrolysis cell 100 forms a good process for treating wastewater by a galvanic cell by utilizing a metal corrosion principle method, industrial wastewater containing organic fluorine enters a water distribution area 1002 through a water inlet 1001 and then enters a filler area 1006, under the condition of no power supply, the iron-carbon micro-electrolysis filler filled in the filler area 1006 is utilized to carry out micro-electrolysis treatment on the wastewater, and produced water is discharged after passing through a bottom water outlet 1003; meanwhile, water in the clear water area 1004 is circulated and flows back to the water distribution area 1002 through the aeration lifting action of the aeration circulation cylinder 1007, so that pollutants can be distributed more uniformly on a filter material layer, and the hydraulic load of the reactor is improved. The iron-carbon micro-electrolysis cell 100 has reasonable structural design and high hydraulic load, and ensures the long-term stable and effective operation of micro-electrolysis treatment on the industrial wastewater containing organic fluorine.
Preferably, the filler is an iron-carbon micro-electrolysis filler, and the filler is a novel micro-electrolysis filler with a microporous alloy structure, which is produced by a multi-element metal alloy fusion catalyst and a high-temperature microporous activation technology.
In a preferred embodiment of the present invention, a grid plate 1005 is disposed between the packing region 1006 and the clean water region 1004 and the water distribution region 1002.
In a preferred embodiment, a grid plate 1005 is disposed between the filling area 1006 and the clean water area 1004 to support the filling.
In a preferred embodiment of the present invention, the iron-carbon micro-electrolysis cell 100 is further provided with a backwash air inlet 1012, a backwash water inlet 1010 and a backwash water outlet 1011;
the backwashing water inlet 1010 is communicated with the clear water area 1004; the backwashing water outlet 1011 is communicated with the water distribution area 1002; the backwash inlet 1012 is disposed in communication with the packing section 1006.
In a preferred embodiment of the present invention, an aerator 1009 is disposed at the bottom of the aeration circulation cylinder 1007, and an air inlet 1008 is disposed at the top of the aeration circulation cylinder 1007.
In a preferred embodiment, the aeration circulation cylinder 1007 is used for aeration lifting, and water in the clean water zone 1004 is refluxed to the water distribution zone 1002.
Preferably, an aerator 1009 is arranged at the lower part of the aeration circulation cylinder 1007 for aeration, and an air inlet 1008 is arranged at the upper part of the aeration circulation cylinder 1007.
According to one aspect of the utility model, the wastewater treatment system containing organic fluorine is mainly formed by connecting an oxidation unit 1, a chemical fluorine removal unit 2, a biochemical treatment unit 3 and a deep treatment unit 4 in sequence;
the oxidation unit 1 includes the above-described iron-carbon micro-electrolysis cell 100.
The utility model provides a contain organic fluorine effluent disposal system mainly connects in order by oxidation unit 1, chemical defluorination unit 2, biochemical treatment unit 3, degree of depth processing unit 4 and constitutes, wherein, oxidation unit 1 includes above-mentioned iron-carbon micro-electrolysis cell 100. Waste water treatment system carries out orderly physics, chemistry, biochemical treatment through containing organic fluorine waste water, has carried out advanced treatment to pollutants such as fluoride, organic matter, suspended solid in the waste water, has greatly promoted the purification efficiency and the purification degree that contain organic fluorine waste water.
In a preferred embodiment of the present invention, the oxidation unit 1 is mainly formed by connecting the above-mentioned iron-carbon micro-electrolysis cell 100 and the fenton reaction cell 110;
as a preferred embodiment, the oxidation unit 1 performs oxidative decomposition of organic fluorides in water into fluorine ions by a combined process of iron-carbon micro-electrolysis and fenton oxidation reaction, so as to provide conditions for subsequent chemical fluorine removal of wastewater.
In a preferred embodiment of the present invention, the chemical defluorination unit 2 mainly comprises a primary defluorination tank 201, a secondary defluorination tank 202 and a pH adjustment tank 203 which are connected in sequence;
in a preferred embodiment, the chemical fluorine removal unit 2 is treated by a two-stage fluorine removal pond to convert fluorine ions in water into precipitated sludge and discharge the precipitated sludge. The primary defluorination tank 201 removes most of fluoride ions by chemical flocculation through adding lime and a polyacrylamide flocculant (PAM), and the secondary defluorination tank 202 removes the remaining fluoride ions by chemical coagulation and precipitation through adding calcium chloride, polyaluminium oxide (PAC) and a polyacrylamide flocculant (PAM), so that conditions are provided for wastewater to enter a subsequent biochemical treatment unit 3.
In a preferred embodiment of the present invention, the biochemical treatment unit 3 is mainly composed of an a2/O reaction tank 301 and a secondary sedimentation tank 302 which are connected with each other;
as a preferred embodiment, the A2/O reaction tank 301 is provided with three sections of anaerobic-anoxic-aerobic, the sewage and the return sludge are firstly completely mixed in the anaerobic tank, and part of BOD is removed through anaerobic decomposition5Partially containing nitrogenConversion of compounds to N2Releasing; then the sewage flows into an anoxic tank, denitrifying bacteria in the tank reduce nitrate radical which flows in through internal circulation and backflow in the aerobic tank into N by taking undecomposed carbon-containing organic matters in the sewage as carbon sources2And released; then the sewage flows into an aerobic tank, and NH in the water3N is subjected to nitration reaction to generate nitrate, organic matters in water are oxidized and decomposed to supply energy to phosphorus-absorbing microorganisms, the microorganisms absorb phosphorus from the water, the phosphorus enters cell tissues and is enriched in the microorganisms, and the phosphorus is precipitated and separated and then is discharged from the system in the form of sludge.
In a preferred embodiment of the present invention, the advanced treatment unit 4 mainly comprises a high density tank 401, an ozone catalytic oxidation tank 402 and a biological aerated filter 403 which are connected in sequence.
In a preferred embodiment, a coagulant and a flocculant are used in the high-density tank 401 to perform coagulation precipitation separation on residual macromolecular and hydrophobic pollutants in the wastewater;
in a preferred embodiment of the present invention, the catalytic ozonation cell 402 in the advanced treatment unit 4 is a solid-phase catalytic ozonation cell 402.
In a preferred embodiment, the catalytic ozonation cell 402 is a solid-phase catalytic ozonation cell 402, and a solid-phase catalyst is disposed in the catalytic ozonation cell 402 to catalyze ozone to generate hydroxyl radicals, thereby improving the oxidation capacity of the system, deeply oxidizing residual organic pollutants difficult to biodegrade in wastewater, and performing oxidative decomposition and chain scission on of macromolecular pollutants to improve the biodegradability of aerobic effluent;
in a preferred embodiment of the present invention, the biological aerated filter 403 in the advanced treatment unit 4 is an isolated biological aerated filter.
As a preferred embodiment, the biological aerated filter 403 is an isolated aeration circulation biological filter, and the biological aerated filter 403 adopts an isolated aeration oxygenation and air stripping circulation operation mode, so that the scouring of air bubbles on a biofilm on the surface layer of a filler in an aeration process is reduced, a higher microbial biomass can be maintained, meanwhile, the mass transfer speed of pollutants between a water phase and a biological phase is enhanced through a large proportion of circulation, the aerobic biochemical reaction efficiency is improved, and the final effluent is ensured to reach the standard and be discharged.
In a preferred embodiment of the present invention, the wastewater treatment system further comprises a sludge treatment unit 5.
As a preferred embodiment, the above wastewater treatment system further comprises a sludge treatment unit 5 for discharging sludge generated in the wastewater treatment system.
In the above preferred embodiment, the sludge treatment unit 5 is respectively in pipeline communication with the primary defluorination tank 201 and the secondary defluorination tank 202 of the chemical defluorination unit 2, the secondary sedimentation tank 302 of the biochemical treatment unit 3 and the high density tank 401 of the advanced treatment unit 4.
Example 1
As shown in fig. 1, the iron-carbon micro-electrolysis cell 100 comprises a water distribution area 1002, a filler area 1006 and a clean water area 1004 which are sequentially arranged from top to bottom, and an aeration circulation cylinder 1007 which sequentially penetrates through the water distribution area 1002, the filler area 1006 and the clean water area 1004;
the iron-carbon micro-electrolysis cell 100 is further provided with a water inlet 1001 and a water outlet 1003, the water inlet 1001 is communicated with the water distribution area 1002, and the water outlet 1003 is communicated with the clear water area 1004.
In this embodiment, the working method of the iron-carbon micro-electrolysis cell 100 is as follows: the method is characterized in that a metal corrosion principle method is utilized to form a good process for treating wastewater by a primary battery, industrial wastewater containing organic fluorine enters a water distribution area 1002 through a water inlet 1001 and then enters a filler area 1006, under the condition of no power supply, iron-carbon micro-electrolysis filler filled in the filler area 1006 is utilized to carry out micro-electrolysis treatment on the wastewater, and produced water is discharged after passing through a bottom water outlet 1003; meanwhile, water in the clear water area 1004 is circulated and flows back to the water distribution area 1002 through the aeration lifting action of the aeration circulation cylinder 1007, so that pollutants can be distributed more uniformly on a filter material layer, and the hydraulic load of the reactor is improved. The iron-carbon micro-electrolysis cell 100 has reasonable structural design and high hydraulic load, and ensures the long-term stable and effective operation of micro-electrolysis treatment on the industrial wastewater containing organic fluorine.
In a preferred embodiment of the present invention, a grid plate 1005 is disposed between the filler region 1006 and the clean water region 1004, so as to support the filter material.
As shown in fig. 2, in a preferred embodiment of the present invention, a backwash air inlet 1012, a backwash water inlet 1010 and a backwash water outlet 1011 are further provided on the iron-carbon micro-electrolysis cell 100; the iron-carbon micro-electrolysis cell 100 is also provided with a backwashing air inlet 1012, a backwashing water inlet 1010 and a backwashing water outlet 1011.
In a preferred embodiment, the backwash water inlet 1010 is communicated with the clean water area 1004; the backwashing water outlet 1011 is communicated with the water distribution area 1002; the backwash inlet 1012 is disposed in communication with the packing section 1006.
In a preferred embodiment of the present invention, an aerator 1009 is disposed at the bottom of the aeration circulation cylinder 1007, and an air inlet 1008 is disposed at the top of the aeration circulation cylinder 1007.
In a preferred embodiment, the aeration circulation cylinder 1007 is used for aeration lifting, and water in the clean water zone 1004 is refluxed to the water distribution zone 1002. An aerator 1009 is arranged at the lower part of the aeration circulation cylinder 1007 for aeration, and an air inlet 1008 is arranged at the upper part of the aeration circulation cylinder 1007.
Example 2
As shown in fig. 3, a wastewater treatment system containing organic fluorine is mainly formed by connecting an oxidation unit 1, a chemical fluorine removal unit 2, a biochemical treatment unit 3 and a deep treatment unit 4 in sequence;
the oxidation unit 1 includes the above-described iron-carbon micro-electrolysis cell 100.
In this embodiment, the organic fluorine-containing wastewater treatment system is mainly formed by connecting an oxidation unit 1, a chemical fluorine removal unit 2, a biochemical treatment unit 3 and a deep treatment unit 4 in sequence, wherein the oxidation unit 1 includes the above iron-carbon micro-electrolysis cell 100. Waste water treatment system carries out orderly physics, chemistry, biochemical treatment through containing organic fluorine waste water, has carried out advanced treatment to pollutants such as fluoride, organic matter, suspended solid in the waste water, has greatly promoted the purification efficiency and the purification degree that contain organic fluorine waste water treatment.
In a preferred embodiment of the present invention, the oxidation unit 1 is mainly formed by connecting the iron-carbon micro-electrolysis cell 100 and the fenton reaction cell 110 in the above example 1; the oxidation unit 1 oxidizes and decomposes organic fluorides in water into fluorine ions through a combined process of iron-carbon micro-electrolysis and Fenton oxidation reaction, and provides conditions for subsequent chemical defluorination of wastewater.
In a preferred embodiment of the present invention, the chemical defluorination unit 2 mainly comprises a primary defluorination tank 201, a secondary defluorination tank 202 and a pH adjustment tank 203 which are connected in sequence; the chemical fluorine removal unit 2 is treated by a two-stage fluorine removal tank to convert water fluorine ions into precipitated sludge and discharge the precipitated sludge. The primary defluorination tank 201 removes most of fluoride ions by chemical flocculation through adding lime and a polyacrylamide flocculant (PAM), and the secondary defluorination tank 202 removes the remaining fluoride ions by chemical coagulation and precipitation through adding calcium chloride, polyaluminium oxide (PAC) and a polyacrylamide flocculant (PAM), so that conditions are provided for wastewater to enter a subsequent biochemical treatment unit 3.
In a preferred embodiment of the present invention, the biochemical treatment unit 3 is mainly composed of an a2/O reaction tank 301 and a secondary sedimentation tank 302 which are connected with each other; the A2/O reaction tank 301 is provided with three sections of anaerobic-anoxic-aerobic, sewage and return sludge enter the anaerobic tank to be completely mixed, and part of BOD is removed through anaerobic decomposition5Converting part of the nitrogen-containing compound into N2 to be released; then the sewage flows into an anoxic tank, denitrifying bacteria in the tank reduce nitrate radical which flows in through internal circulation and backflow in the aerobic tank into N by taking undecomposed carbon-containing organic matters in the sewage as carbon sources2And released; then the sewage flows into an aerobic tank, and NH in the water3N is subjected to nitration reaction to generate nitrate, organic matters in water are oxidized and decomposed to supply energy to phosphorus-absorbing microorganisms, the microorganisms absorb phosphorus from the water, the phosphorus enters cell tissues and is enriched in the microorganisms, and the phosphorus is precipitated and separated and then is discharged from the system in the form of sludge.
In a preferred embodiment of the present invention, the advanced treatment unit 4 mainly comprises a high density tank 401, an ozone catalytic oxidation tank 402 and a biological aerated filter 403 which are connected in sequence. The high-density tank 401 adopts a combined medicament to precipitate and separate residual macromolecular and hydrophobic pollutants in the wastewater;
in a preferred embodiment of the present invention, the catalytic ozonation cell 402 in the advanced treatment unit 4 is a solid-phase catalytic ozonation cell 402. The ozone catalytic oxidation tank 402 is a solid-phase ozone catalytic oxidation tank 402, a solid-phase catalyst is arranged in the ozone catalytic oxidation tank 402, the ozone is catalyzed to generate hydroxyl radicals, the oxidation capacity of the system is improved, residual organic pollutants which are difficult to biodegrade in the wastewater are deeply oxidized, and macromolecular pollutants are oxidized, decomposed and broken chains, so that the biodegradability of aerobic effluent is improved;
the utility model discloses an in an preferred embodiment, bological aerated filter 403 in the advanced treatment unit 4 is for keeping apart bological aerated filter above-mentioned bological aerated filter 403 of aeration cycle for keeping apart bological aerated filter, bological aerated filter 403 adopts the operation mode of keeping apart aeration oxygenation, air stripping circulation, has reduced the washing away of aeration process bubble to packing top layer biomembrane, can maintain higher microorganism volume, has strengthened the pollutant at aqueous phase and alternate mass transfer speed of biology through the circulation of big proportion simultaneously, has improved good oxygen biochemical reaction efficiency, ensures that final play water is up to standard to discharge.
In a preferred embodiment of the present invention, as shown in fig. 4, the wastewater treatment system further comprises a sludge treatment unit 5.
As a preferred embodiment, the above wastewater treatment system further comprises a sludge treatment unit 5 for discharging sludge generated in the wastewater treatment system.
In the above preferred embodiment, the sludge treatment unit 5 is respectively in pipeline communication with the primary defluorination tank 201 and the secondary defluorination tank 202 of the chemical defluorination unit 2, the secondary sedimentation tank 302 of the biochemical treatment unit 3 and the high density tank 401 of the advanced treatment unit 4.
Effect example 1
A new material company Limited in Shaowu city, Fujian province mainly produces products such as novel environment-friendly refrigerants, fluorine-containing polymers and the like. The discharged organic fluorine-containing wastewater mainly comprises alkaline tower wastewater, emergency adsorption tower wastewater, recycled alkaline tower wastewater, resin, emulsion discharge wastewater, electrolysis water scrubber wastewater, waste gas alkaline tower discharge wastewater and the like. After mixing, the fluoride content in the comprehensive wastewater is 150mg/L, the COD is 350mg/L, the ammonia nitrogen is 80mg/L, and the SS is 400 mg/L.
Use the utility model discloses the waste water treatment system that contains organic fluorine that provides in the embodiment 2 handles above-mentioned waste water, and the content of each pollutant in the aquatic after the processing is fluoride <6mg/L, and COD <150mg/L, and the ammonia nitrogen <30mg/L, and SS <80 mg/L.
To sum up, the utility model provides an iron-carbon micro-electrolysis cell 100 and contain its contain organic fluorine effluent disposal system through carrying out orderly physics, chemistry, biochemical treatment to containing organic fluorine waste water, carries out advanced treatment to pollutants such as fluoride, organic matter, suspended solid in the waste water, has greatly promoted the purification efficiency and the purification degree that contain organic fluorine effluent disposal.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The iron-carbon micro-electrolysis cell is characterized by comprising a water distribution area (1002), a filler area (1006) and a clear water area (1004) which are sequentially arranged from top to bottom, and an aeration circulating cylinder (1007) which is sequentially arranged in the water distribution area (1002), the filler area (1006) and the clear water area (1004) in a penetrating manner;
the iron-carbon micro-electrolysis cell is further provided with a water inlet (1001) and a water outlet (1003), the water inlet (1001) is communicated with the water distribution area (1002), and the water outlet (1003) is communicated with the clear water area (1004).
2. The iron-carbon micro-electrolysis cell according to claim 1, characterized in that a grid plate (1005) is arranged between the filler zone (1006) and the clean water zone (1004).
3. The iron-carbon micro-electrolysis cell according to claim 1 or 2, characterized in that a backwash air inlet (1012), a backwash water inlet (1010) and a backwash water outlet (1011) are further provided on the iron-carbon micro-electrolysis cell.
4. The iron-carbon micro-electrolysis cell according to claim 3, wherein the backwash water inlet (1010) is arranged in communication with the clean water zone (1004); the backwashing water outlet (1011) is communicated with the water distribution area (1002); the backwash air inlet (1012) is arranged to communicate with the packing region (1006).
5. The iron-carbon micro-electrolysis cell according to claim 1, characterized in that the bottom of the aeration circulation cylinder (1007) is provided with an aerator (1009), and the top of the aeration circulation cylinder (1007) is provided with an air inlet (1008).
6. The organic fluorine-containing wastewater treatment system is characterized by mainly comprising an oxidation unit (1), a chemical fluorine removal unit (2), a biochemical treatment unit (3) and a deep treatment unit (4) which are connected in sequence;
the oxidation unit (1) comprises an iron-carbon micro-electrolysis cell (100) according to any one of claims 1 to 5.
7. The organic fluorine-containing wastewater treatment system according to claim 6, wherein the oxidation unit (1) is mainly formed by connecting the iron-carbon micro-electrolysis cell (100) and the Fenton reaction cell (110) according to any one of claims 1 to 5;
the chemical fluorine removal unit (2) mainly comprises a primary fluorine removal tank (201), a secondary fluorine removal tank (202) and a pH (potential of hydrogen) callback tank (203) which are connected in sequence;
the biochemical treatment unit (3) is mainly composed of A2the/O reaction tank (301) and the secondary sedimentation tank (302) are connected with each other;
the advanced treatment unit (4) mainly comprises a high-density tank (401), an ozone catalytic oxidation tank (402) and a biological aerated filter (403) which are connected in sequence.
8. The wastewater treatment system containing organic fluorine according to claim 7, characterized in that the ozone catalytic oxidation pond (402) in the advanced treatment unit (4) is a solid phase ozone catalytic oxidation pond.
9. The organofluorine containing wastewater treatment system according to any one of claims 6 to 8, further comprising a sludge treatment unit (5).
10. The organic fluorine-containing wastewater treatment system according to claim 9, wherein the sludge treatment unit (5) is respectively in pipeline communication with the primary defluorination tank (201) of the chemical defluorination unit (2), the secondary defluorination tank (202), the secondary sedimentation tank (302) of the biochemical treatment unit (3) and the high density tank (401) of the advanced treatment unit (4).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439865A (en) * | 2020-04-07 | 2020-07-24 | 中国科学院生态环境研究中心 | Defluorination method for coal gas wastewater |
| CN111847777A (en) * | 2020-07-13 | 2020-10-30 | 久沛（上海）环保科技有限公司 | Fluorine-containing pickling wastewater treatment process |
| CN113480056A (en) * | 2021-08-04 | 2021-10-08 | 湘潭大学 | Method for treating high-concentration fluorine-containing wastewater by two-stage iron-carbon adsorption-complexation-co-coprecipitation process |
| CN114180681A (en) * | 2021-12-10 | 2022-03-15 | 西安聚光环保科技有限公司 | Intensive aeration internal circulation iron-carbon micro-electrolysis device |
| CN115196797A (en) * | 2021-04-08 | 2022-10-18 | 湘潭大学 | Pretreatment method for acid-making washing wastewater of steel smelting plant |
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2019
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439865A (en) * | 2020-04-07 | 2020-07-24 | 中国科学院生态环境研究中心 | Defluorination method for coal gas wastewater |
| CN111439865B (en) * | 2020-04-07 | 2022-02-25 | 中国科学院生态环境研究中心 | Defluorination method for coal gas wastewater |
| CN111847777A (en) * | 2020-07-13 | 2020-10-30 | 久沛（上海）环保科技有限公司 | Fluorine-containing pickling wastewater treatment process |
| CN115196797A (en) * | 2021-04-08 | 2022-10-18 | 湘潭大学 | Pretreatment method for acid-making washing wastewater of steel smelting plant |
| CN113480056A (en) * | 2021-08-04 | 2021-10-08 | 湘潭大学 | Method for treating high-concentration fluorine-containing wastewater by two-stage iron-carbon adsorption-complexation-co-coprecipitation process |
| CN113480056B (en) * | 2021-08-04 | 2022-10-25 | 湘潭大学 | Method for treating high-concentration fluorine-containing wastewater by two-stage iron-carbon adsorption-complexation-synergistic co-precipitation process |
| CN114180681A (en) * | 2021-12-10 | 2022-03-15 | 西安聚光环保科技有限公司 | Intensive aeration internal circulation iron-carbon micro-electrolysis device |
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