CN117819713A - Device and method for degrading organic wastewater by using carrousel oxidation ditch - Google Patents
Device and method for degrading organic wastewater by using carrousel oxidation ditch Download PDFInfo
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- CN117819713A CN117819713A CN202410128943.6A CN202410128943A CN117819713A CN 117819713 A CN117819713 A CN 117819713A CN 202410128943 A CN202410128943 A CN 202410128943A CN 117819713 A CN117819713 A CN 117819713A
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- oxidation ditch
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- wastewater
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- 239000002351 wastewater Substances 0.000 title claims abstract description 117
- 230000003647 oxidation Effects 0.000 title claims abstract description 100
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 100
- 230000000593 degrading effect Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000010802 sludge Substances 0.000 claims abstract description 40
- 239000006260 foam Substances 0.000 claims abstract description 39
- 238000004062 sedimentation Methods 0.000 claims abstract description 23
- 238000005276 aerator Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims description 75
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052698 phosphorus Inorganic materials 0.000 claims description 17
- 239000011574 phosphorus Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 241000894006 Bacteria Species 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- 230000001174 ascending effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims 1
- 238000006731 degradation reaction Methods 0.000 claims 1
- 239000010815 organic waste Substances 0.000 claims 1
- 238000004065 wastewater treatment Methods 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 241000186660 Lactobacillus Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000235342 Saccharomycetes Species 0.000 description 1
- VGPSUIRIPDYGFV-UHFFFAOYSA-N [N].O[N+]([O-])=O Chemical compound [N].O[N+]([O-])=O VGPSUIRIPDYGFV-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229940039696 lactobacillus Drugs 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 230000001706 oxygenating effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a device and a method for degrading organic wastewater by using a carrousel oxidation ditch, and belongs to the technical field of organic wastewater treatment. The device for degrading the organic wastewater by using the carrousel oxidation ditch comprises an oxidation ditch, wherein a water inlet of the oxidation ditch is connected with an anaerobic tank, a surface aerator is arranged in the oxidation ditch, a water outlet of the oxidation ditch is connected with a sedimentation tank, and the bottom of the sedimentation tank is connected with the anaerobic tank through a sludge pump and a sludge return pipe; the oxidation pond is close to outlet department and is provided with the clearance subassembly of clearance foam and gas. The device and the method for degrading the organic wastewater by using the carrousel oxidation ditch can solve the problems that foam and sludge floating are easy to generate and the organic wastewater treatment effect is affected in the existing organic wastewater treatment.
Description
Technical Field
The invention relates to the technical field of organic wastewater treatment, in particular to a device and a method for degrading organic wastewater by using a carrousel oxidation ditch.
Background
The Carrousel oxidation ditch is called as a circulation baffling oxidation ditch for short, and a directional control aeration and stirring device is used for transmitting horizontal speed to the mixed liquid, so that the stirred mixed liquid circularly flows in a closed channel of the oxidation ditch. The aeration device is used for introducing oxygen into the oxidation ditch to form an aerobic zone in the oxidation ditch, and microorganism bacteria in the sludge decompose organic matters and the like in the sewage in the aerobic zone so as to achieve the effect of removing the organic matters in the sewage. When the organic matters contained in the sewage are more, the organic matters and the grease are easy to be enriched in the sludge, and a large amount of foam is generated by rotating brush, oxygenating and stirring, so that the enrichment of the large amount of foam in the oxidation ditch influences the treatment effect of the wastewater. And the existence of foam can lead to the lightening of mud, causes the come-up of mud, influences the treatment effect of waste water. When the aeration time in the wastewater is long, high nitrification occurs in the oxidation tank, so that the concentration of nitrate is high, denitrification is easy to occur in an anoxic zone close to the water outlet, nitrogen is generated, the nitrogen also causes the floating of sludge, the sedimentation of the sludge is poor, and the treatment effect of the wastewater is affected.
Disclosure of Invention
The invention aims to provide a device and a method for degrading organic wastewater by using a carrousel oxidation ditch, which solve the problems that foam and sludge floating are easy to generate and the treatment effect of the organic wastewater is affected in the existing organic wastewater treatment.
In order to achieve the aim, the invention provides a device for degrading organic wastewater by using a carrousel oxidation ditch, which comprises an oxidation ditch, wherein a water inlet of the oxidation ditch is connected with an anaerobic tank, a surface aerator is arranged in the oxidation ditch, a water outlet of the oxidation ditch is connected with a sedimentation tank, and the bottom of the sedimentation tank is connected with the anaerobic tank through a sludge pump and a sludge return pipe; the oxidation pond is close to outlet department and is provided with the clearance subassembly of clearance foam and gas.
Preferably, the surface aerator is arranged at one end of the oxidation ditch close to the water inlet.
Preferably, the cleaning component comprises a cleaning box, the cleaning box is fixed in the oxidation ditch, a water inlet is formed in the upstream surface of the cleaning box, a guide plate with stirring effect on wastewater is arranged in the cleaning box, an inclined baffle is arranged at the top of the cleaning box, a through-flow port is arranged between the baffle and the guide plate, a water flow channel is arranged between the guide plate and the inner wall at the bottom of the cleaning box, a water outlet is formed in the upstream surface of the cleaning box, and a stirrer for stirring wastewater is arranged between the guide plate and the upstream surface; the side wall of the cleaning box is provided with an overflow port I and an overflow port II, and the overflow port I and the overflow port II are positioned on two sides of the baffle.
Preferably, the cleaning box is fixedly connected with the inner wall of the oxidation ditch in a sealing way, and the top end of the cleaning box is higher than the liquid level of wastewater in the oxidation ditch.
Preferably, both sides of the guide plate are fixed on the inner wall of the cleaning box in a sealing way, the guide plate comprises a declining plate and an ascending plate, the declining plate is connected with the ascending plate through a connecting plate, a right-angle frustum space is formed between the declining plate and the inner wall of one side of the cleaning box, on which the water inlet is formed, and an inverted right-angle frustum space is formed between the ascending plate and the inner wall of one side of the cleaning box, on which the water inlet is formed.
Preferably, both ends of the baffle are fixed on the inner wall of the cleaning box in a sealing way, the bottom end of the baffle is lower than the wastewater level of the oxidation ditch, and the top end of the baffle is higher than the wastewater level of the oxidation ditch.
Preferably, the first overflow port and the second overflow port are not lower than the wastewater level of the oxidation ditch.
Preferably, the water outlet is positioned below the liquid level of the oxidation ditch.
The method for degrading the organic wastewater based on the device for degrading the organic wastewater by using the carrousel oxidation ditch comprises the following steps of:
s1, discharging organic wastewater subjected to preliminary filtration by a grating into an anaerobic tank, and performing denitrification in the anaerobic tank to realize phosphorus release of phosphorus accumulating bacteria;
s2, the organic wastewater treated by the anaerobic tank enters an oxidation ditch through a water inlet, and flows along the oxidation ditch under the action of a surface aerator;
s3, organic wastewater in the oxidation ditch enters the cleaning box through a water inlet on the cleaning box, the organic wastewater flows out of the overflow port after being accelerated by a declining plate and an ascending plate of the guide plate, foam and gas overflow upwards in the acceleration process of the organic wastewater, a foam enrichment area is formed above the liquid level of the organic wastewater in the cleaning box, and foam in the foam enrichment area is discharged from the overflow port I;
s4, the organic wastewater flowing out of the overflow port moves downwards under the action of a stirrer, the stirrer stirs the organic wastewater, foam and gas in the organic wastewater float upwards, and the organic wastewater is discharged from the overflow port II; part of the organic wastewater is discharged from the water outlet and enters the oxidation ditch, and the other part of the organic wastewater flows back to a right-angle frustum space enclosed by the guide plate and the cleaning box through a water flow channel at the bottom of the guide plate, so that the circulating flow of the organic wastewater is realized;
s5, discharging the organic wastewater in the oxidation ditch treated by the cleaning assembly into a sedimentation tank through a water outlet for sedimentation, and conveying the sludge sedimented in the sedimentation tank into an anaerobic tank through a sludge return pipe by a sludge pump.
The device and the method for degrading the organic wastewater by using the carrousel oxidation ditch have the beneficial effects that:
1. the sludge in the sedimentation tank is sent into the pressure oxygen tank through the sludge pump and the sludge return pipe, so that the recycling of the sludge is realized, the phosphorus release process of the phosphorus accumulating bacteria is realized in the anaerobic tank, and the removal of phosphorus in the organic wastewater is facilitated.
2. The cleaning component is arranged at the position, close to the discharge port, of the oxidation ditch, and the cleaning component is used for cleaning foam and gas in the oxidation ditch, so that the treatment effect of organic wastewater is improved.
3. The guide plate arranged in the cleaning box accelerates water flow, and organic wastewater forms internal circulation in the cleaning box under the action of the guide plate and the stirrer, so that foam and gas are removed.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an apparatus and method for degrading organic wastewater using a carrousel oxidation ditch according to the present invention;
FIG. 2 is a schematic diagram of a cleaning assembly for an embodiment of a device and method for degrading organic wastewater using a carrousel oxidation ditch according to the present invention.
Reference numerals
1. An anaerobic tank; 2. a water inlet; 3. an oxidation ditch; 4. a surface aerator; 5. a water outlet; 6. a sedimentation tank; 7. a sludge pump; 8. a mud return pipe; 9. cleaning the assembly; 10. a cleaning box; 11. a water inlet; 12. a deflector; 13. a baffle; 14. a flow-through port; 15. a stirrer; 16. a water outlet; 17. an overflow port I; 18. an overflow port II; 19. a foam enrichment zone.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Examples
As shown in fig. 1-2, the device for degrading organic wastewater by using a carrousel oxidation ditch comprises an oxidation ditch 3, wherein the oxidation ditch 3 is of a conventional runway-type oxidation ditch 3 structure. The water inlet 2 of the oxidation ditch 3 is connected with the anaerobic tank 1, the anaerobic tank 1 carries out preliminary treatment on the organic wastewater, and the phosphorus release process of the phosphorus accumulating bacteria is carried out in the anaerobic tank 1, so that the removal of phosphorus in the organic wastewater is facilitated to be improved. The oxidation ditch 3 is internally provided with a surface aerator 4, and the surface aerator 4 is arranged at one end of the oxidation ditch 3 close to the water inlet 2. The surface aerator 4 adopts the existing structure to oxygenate the organic wastewater in the oxidation ditch 3 and push the organic wastewater to flow in the oxidation ditch 3. The water outlet 5 of the oxidation ditch 3 is connected with a sedimentation tank 6, and the sedimentation tank 6 is used for carrying out sedimentation separation on sludge in the organic wastewater. The bottom of the sedimentation tank 6 is connected with the anaerobic tank 1 through a sludge pump 7 and a sludge return pipe 8, and the sludge return pipe 8 and the sludge pump 7 pump partial sludge in the sedimentation tank 6 into the anaerobic tank 1 so as to realize the recycling of the sludge.
The oxidation pond is provided with the clearance subassembly 9 of clearance foam and gas near outlet 5 department. The cleaning assembly 9 comprises a cleaning box 10, and the cleaning box 10 is made of stainless steel. The cleaning box 10 is fixedly connected with the inner wall of the oxidation ditch 3 in a sealing way, and the top end of the cleaning box 10 is higher than the liquid level of the wastewater in the oxidation ditch 3. Organic wastewater in the oxidation ditch 3 is prevented from entering the cleaning box 10 through the top of the cleaning box 10.
The upstream surface of the cleaning box 10 is provided with a water inlet 11, and the organic wastewater in the anaerobic tank 1 flows into the cleaning box 10 through the water inlet 11. A baffle 12 for stirring the wastewater is provided in the cleaning tank 10. The two sides of the deflector 12 are fixed on the inner wall of the cleaning box 10 in a sealing way. The deflector 12 comprises a declining plate and an ascending plate, the declining plate is connected with the ascending plate through a connecting plate, and the ascending plate, the declining plate and the connecting plate are of an integrated structure. A right-angle frustum space is formed between the declining plate and the inner wall of one side of the cleaning box 10, on which the water inlet 11 is arranged, and the cross section size of the right-angle taper sleeve space is gradually reduced from bottom to top. An inverted right-angle frustum space is formed between the upward tilting plate and the inner wall of the side of the cleaning box 10 where the water inlet 11 is arranged. The space cross section size of the inverted right-angle frustum gradually increases from bottom to top. After the water flow enters the right-angle frustum space, the cross section is gradually reduced, and the water flow speed and the cross section are inversely proportional to each other, so that the organic wastewater is accelerated; after the accelerated organic wastewater enters an inverted right-angle frustum space, energy is released, and the water flow speed is further accelerated; due to the gradual increase of the cross section size, the rising speed of foam and bubbles in the organic wastewater is higher, and a foam enrichment area 19 is formed on the liquid surface of the organic wastewater, so that the foam and the bubbles in the organic wastewater are effectively discharged.
The top of the cleaning box 10 is provided with an inclined baffle 13, and two ends of the baffle 13 are fixed on the inner wall of the cleaning box 10 in a sealing way. The bottom end of the baffle 13 is lower than the wastewater level of the oxidation ditch 3, and the top end of the baffle 13 is higher than the wastewater level of the oxidation ditch 3. A through-flow port 14 is arranged between the baffle 13 and the deflector 12. The organic wastewater accelerated by the deflector 12 flows through the other side of the deflector 12 through the flow through port 14.
A stirrer 15 for stirring the wastewater is arranged between the deflector 12 and the back surface. The agitator 15 includes an agitating shaft and an agitating rod, and the agitating shaft is rotatably provided on the inner wall of the cleaning tank 10 by a bearing. The motor arranged outside the cleaning box 10 drives the stirring shaft to rotate, so that the organic wastewater is stirred. The stirrer 15 is used for stirring the organic wastewater, so that on one hand, the floating of bubbles and foam is facilitated, and the bubbles and foam in the organic wastewater are further removed; on the other hand, the organic wastewater is caused to flow back to the other side of the guide plate 12 through a water flow channel arranged between the guide plate 12 and the bottom inner wall of the cleaning box 10, so that the internal circulation of the organic wastewater in the cleaning box 10 is realized, and the foam and bubble removal effect in the organic wastewater is improved.
A water outlet 16 is arranged on the back surface of the cleaning box 10, and the water outlet 16 is positioned below the liquid level of the oxidation ditch 3. The organic wastewater is discharged into the oxidation ditch 3 through the water outlet 16. The side wall of the cleaning box 10 is provided with an overflow port I17 and an overflow port II 18, and the overflow port I17 and the overflow port II 18 are positioned on two sides of the baffle 13. The overflow port I17 and the overflow port II 18 are not lower than the wastewater level of the oxidation ditch 3. After the foam enrichment zone 19 formed on the liquid level of the organic wastewater is accumulated to the height of the overflow port I17 and the overflow port II 18, the foam enrichment zone is discharged out of the cleaning box 10 through the overflow port I17 and the overflow port II 18.
The method for degrading the organic wastewater based on the device for degrading the organic wastewater by using the carrousel oxidation ditch comprises the following steps of:
s1, discharging the organic wastewater subjected to preliminary filtration by a grid into an anaerobic tank 1, and filtering large-particle impurities by the grid. The sludge returned by the sedimentation tank 6 contains microorganism bacteria for treating wastewater, the sludge is diatom ooze, and the microorganism bacteria comprise lactobacillus, saccharomycetes, phosphorus accumulating bacteria, nitrifying bacteria, photosynthetic bacteria, bacillus and the like. The returned sludge and 10-30% of sewage enter an anaerobic zone, and the residual nitric acid nitrogen in the returned sludge can be denitrified under the conditions of oxygen deficiency and 10-30% of carbon source; the facultative bacteria in the anaerobic tank 1 convert the soluble BOD into VFA, the phosphorus accumulating bacteria obtain the VFA to assimilate the VFA into PHB, and the phosphate is released by the hydrolysis of the phosphorus accumulating bacteria, so that the phosphorus release process is realized; phosphorus-released phosphorus-accumulating bacteria absorb phosphorus in the oxygen-enriched environment of the oxidation ditch 3, and transfer the phosphorus into the sludge, so that the phosphorus in the organic sewage is effectively removed.
S2, the organic wastewater treated by the anaerobic tank 1 enters the oxidation ditch 3 through the water inlet 2, and flows along the oxidation ditch 3 under the action of the surface aerator 4. The surface aerator 4 provides sufficient oxygen for the organic wastewater, and forms an oxygen-enriched environment in the oxidation ditch 3, which is beneficial to the decomposition of microorganism bacteria on organic matters.
S3, organic wastewater in the oxidation ditch 3 enters the cleaning box 10 through a water inlet 11 on the cleaning box 10, the organic wastewater flows out of the overflow port 14 after being accelerated through a declining plate and an ascending plate of the guide plate 12, foam and gas overflow upwards in the acceleration process of the organic wastewater, a foam enrichment area 19 is formed above the liquid level of the organic wastewater in the cleaning box 10, and foam in the foam enrichment area 19 is discharged from the overflow port I17.
And S4, the organic wastewater flowing out of the overflow port 14 moves downwards under the action of the stirrer 15, the stirrer 15 stirs the organic wastewater, foam and gas in the organic wastewater float upwards, separation of sludge and foam and gas is facilitated, and the foam and gas are discharged from the overflow port II 18. Part of the organic wastewater is discharged from the water outlet 16 and enters the oxidation ditch 3, and the other part of the organic wastewater flows back to a right-angle frustum space enclosed by the guide plate 12 and the cleaning box 10 through a water flow channel at the bottom of the guide plate 12, so that the circulating flow of the organic wastewater is realized, and the removal effect of foam and gas in the organic wastewater is improved.
S5, the organic wastewater in the oxidation ditch 3 treated by the cleaning assembly 9 is discharged into the sedimentation tank 6 through the water outlet 5 to be sedimentated, and sludge precipitated in the sedimentation tank 6 is sent into the anaerobic tank 1 through the sludge return pipe 8 by the sludge pump 7.
Therefore, the device and the method for degrading the organic wastewater by using the carrousel oxidation ditch can solve the problems that foam and sludge floating are easy to generate and the organic wastewater treatment effect is affected in the existing organic wastewater treatment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (9)
1. The utility model provides a device of organic waste water of carrousel oxidation ditch degradation which characterized in that: the sewage treatment device comprises an oxidation ditch, wherein a water inlet of the oxidation ditch is connected with an anaerobic tank, a surface aerator is arranged in the oxidation ditch, a water outlet of the oxidation ditch is connected with a sedimentation tank, and the bottom of the sedimentation tank is connected with the anaerobic tank through a sludge pump and a sludge return pipe; the oxidation pond is close to outlet department and is provided with the clearance subassembly of clearance foam and gas.
2. The apparatus for degrading organic wastewater by using a carrousel oxidation ditch according to claim 1, wherein: the surface aerator is arranged at one end of the oxidation ditch close to the water inlet.
3. The apparatus for degrading organic wastewater by using a carrousel oxidation ditch according to claim 2, wherein: the cleaning assembly comprises a cleaning box, the cleaning box is fixed in the oxidation ditch, a water inlet is formed in the upstream surface of the cleaning box, a guide plate with stirring effect on wastewater is arranged in the cleaning box, an inclined baffle is arranged at the top of the cleaning box, a flow passing port is arranged between the baffle and the guide plate, a water flow channel is arranged between the guide plate and the inner wall of the bottom of the cleaning box, a water outlet is formed in the upstream surface of the cleaning box, and a stirrer for stirring wastewater is arranged between the guide plate and the upstream surface; the side wall of the cleaning box is provided with an overflow port I and an overflow port II, and the overflow port I and the overflow port II are positioned on two sides of the baffle.
4. A device for degrading organic wastewater by a carrousel oxidation ditch according to claim 3, wherein: the cleaning box is fixedly connected with the inner wall of the oxidation ditch in a sealing way, and the top end of the cleaning box is higher than the liquid level of wastewater in the oxidation ditch.
5. The device for degrading organic wastewater by using a carrousel oxidation ditch according to claim 4, wherein: the two sides of the guide plate are fixed on the inner wall of the cleaning box in a sealing way, the guide plate comprises a declining plate and an ascending plate, the declining plate is connected with the ascending plate through a connecting plate, a right-angle frustum space is formed between the declining plate and the inner wall of one side of the cleaning box, on which the water inlet is formed, and an inverted right-angle frustum space is formed between the ascending plate and the inner wall of one side of the cleaning box, on which the water inlet is formed.
6. The apparatus for degrading organic wastewater by using a carrousel oxidation ditch according to claim 5, wherein: the both ends of baffle are sealed to be fixed on the inner wall of cleaning box, and the bottom of baffle is less than the waste water liquid level of oxidation ditch, and the top of baffle is higher than the waste water liquid level of oxidation ditch.
7. The apparatus for degrading organic wastewater by using a carrousel oxidation ditch according to claim 6, wherein: the overflow port I and the overflow port II are not lower than the liquid level of the wastewater in the oxidation ditch.
8. The apparatus for degrading organic wastewater in a carrousel oxidation ditch according to claim 7, wherein: the water outlet is positioned below the liquid level of the oxidation ditch.
9. A method for degrading organic wastewater based on the apparatus for degrading organic wastewater by using a carrousel oxidation ditch as claimed in claim 8, comprising the steps of:
s1, discharging organic wastewater subjected to preliminary filtration by a grating into an anaerobic tank, and performing denitrification in the anaerobic tank to realize phosphorus release of phosphorus accumulating bacteria;
s2, the organic wastewater treated by the anaerobic tank enters an oxidation ditch through a water inlet, and flows along the oxidation ditch under the action of a surface aerator;
s3, organic wastewater in the oxidation ditch enters the cleaning box through a water inlet on the cleaning box, the organic wastewater flows out of the overflow port after being accelerated by a declining plate and an ascending plate of the guide plate, foam and gas overflow upwards in the acceleration process of the organic wastewater, a foam enrichment area is formed above the liquid level of the organic wastewater in the cleaning box, and foam in the foam enrichment area is discharged from the overflow port I;
s4, the organic wastewater flowing out of the overflow port moves downwards under the action of a stirrer, the stirrer stirs the organic wastewater, foam and gas in the organic wastewater float upwards, and the organic wastewater is discharged from the overflow port II; part of the organic wastewater is discharged from the water outlet and enters the oxidation ditch, and the other part of the organic wastewater flows back to a right-angle frustum space enclosed by the guide plate and the cleaning box through a water flow channel at the bottom of the guide plate, so that the circulating flow of the organic wastewater is realized;
s5, discharging the organic wastewater in the oxidation ditch treated by the cleaning assembly into a sedimentation tank through a water outlet for sedimentation, and conveying the sludge sedimented in the sedimentation tank into an anaerobic tank through a sludge return pipe by a sludge pump.
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| CN202410128943.6A CN117819713A (en) | 2024-01-30 | 2024-01-30 | Device and method for degrading organic wastewater by using carrousel oxidation ditch |
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2024
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