CN215288264U - Multi-medium sewage advanced treatment system - Google Patents
Multi-medium sewage advanced treatment system Download PDFInfo
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- CN215288264U CN215288264U CN202120157974.6U CN202120157974U CN215288264U CN 215288264 U CN215288264 U CN 215288264U CN 202120157974 U CN202120157974 U CN 202120157974U CN 215288264 U CN215288264 U CN 215288264U
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- 239000010865 sewage Substances 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 238000004062 sedimentation Methods 0.000 claims abstract description 77
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000004576 sand Substances 0.000 claims abstract description 40
- 238000000926 separation method Methods 0.000 claims abstract description 37
- 238000005189 flocculation Methods 0.000 claims abstract description 34
- 230000016615 flocculation Effects 0.000 claims abstract description 34
- 239000010802 sludge Substances 0.000 claims abstract description 29
- 238000010992 reflux Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000010703 silicon Substances 0.000 claims abstract description 16
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 16
- 239000000701 coagulant Substances 0.000 claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000005345 coagulation Methods 0.000 claims description 32
- 230000015271 coagulation Effects 0.000 claims description 32
- 238000006115 defluorination reaction Methods 0.000 claims description 25
- 239000003344 environmental pollutant Substances 0.000 claims description 23
- 231100000719 pollutant Toxicity 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 238000004065 wastewater treatment Methods 0.000 claims description 11
- 230000001112 coagulating effect Effects 0.000 claims description 7
- 230000003311 flocculating effect Effects 0.000 claims 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract description 8
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 description 23
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 13
- 229910052731 fluorine Inorganic materials 0.000 description 13
- 239000011737 fluorine Substances 0.000 description 13
- 239000008394 flocculating agent Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000002306 biochemical method Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The application relates to the technical field of sewage treatment, and particularly discloses a multi-medium sewage advanced treatment system. The system comprises an upstream sedimentation system I, a downstream sedimentation system II and a hydraulic cyclone separation device; the hydraulic rotary separation device is connected with a sludge reflux pump, a rotary separation liquid reflux pipe and a micro-sand reflux pipe; the water inlet end of the sludge reflux pump is communicated with the downstream of the sedimentation system II, and the water outlet end of the sludge reflux pump is communicated with the water inlet end of the hydraulic cyclone separation device; the water inlet end of the rotary separation liquid return pipe is communicated with the water outlet end of the hydraulic rotary separation device, and the water inlet end is connected to the upstream of the sedimentation system I; and the sand inlet end of the micro-sand return pipe is communicated with the sand outlet end of the hydraulic rotary separation device, and the sand outlet end is communicated with the sedimentation system II. The sedimentation system I and the sedimentation system II are combined and used, and relevant coagulant, flocculant, active carbon, micro-sand and other media are added into the sewage to remove silicon, hardness, fluoride, COD and the like in the sewage, and the flocculation difficulty caused by low temperature and low turbidity can be overcome.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to a multi-medium sewage advanced treatment system.
Background
In order to prevent and treat water pollution, protect and improve water environment, guarantee human health, promote sustainable development of environment, economy and society, China has developed national sewage discharge standards and various local sewage discharge standards, and the sewage discharge standards are higher and higher with the enhancement of environmental awareness of people, so sewage must be subjected to advanced treatment.
In general, the advanced treatment method of sewage includes activated carbon adsorption, membrane separation, advanced oxidation, combination of ozone and biochemical methods, and the like. The activated carbon adsorption method utilizes the characteristic adsorption capacity of activated carbon, can effectively adsorb organic pollutants in wastewater, but the utilization rate of the activated carbon in the activated carbon adsorption method is low. The membrane separation method is a novel separation technology for separating, purifying and concentrating a mixture under the action of external force by utilizing a selectively permeable thin film, and the membrane separation technology is generally suitable for separating the mixture with larger difference of physical properties. Advanced oxidation processes utilize extremely strong oxidizing agents such as ozone to remove color, turbidity, and odor to remove contaminants such as phenols, cyanides, sulfides, pesticides, and petroleum in wastewater. The combination of the ozone method and the biochemical method is a technology for degrading macromolecular refractory organic matters into micromolecular organic matters by utilizing an advanced oxidation technology and removing the micromolecular organic matters by utilizing the biochemical method, the technology combining the ozone method and the biochemical method is adopted to treat sewage, the treatment cost is higher, and the occupied area of a biochemical treatment system is larger.
Therefore, in order to treat organic sewage which is low in temperature and low in turbidity, contains more pollutants and is difficult to degrade, an advanced treatment system needs to be developed to treat the sewage so as to discharge the sewage up to the standard.
SUMMERY OF THE UTILITY MODEL
The application provides a multimedium sewage advanced treatment system adopts following technical scheme:
a multi-medium sewage advanced treatment system comprises an upstream sedimentation system I, a downstream sedimentation system II and a hydraulic cyclone separation device; the hydraulic rotary separation device is connected with a sludge reflux pump, a rotary separation liquid reflux pipe and a micro-sand reflux pipe;
the water inlet end of the sludge reflux pump is communicated with the downstream of the sedimentation system II, and the water outlet end of the sludge reflux pump is communicated with the water inlet end of the hydraulic cyclone separation device;
the water inlet end of the rotary liquid separation return pipe is communicated with the water outlet end of the hydraulic rotary separation device, and the water inlet end of the rotary liquid separation return pipe is connected to the upstream of the sedimentation system I;
and the sand inlet end of the micro-sand return pipe is communicated with the sand outlet end of the hydraulic rotary separation device, and the sand outlet end is communicated with the downstream of the sedimentation system II.
Preferably, sedimentation system I is including the mixed coagulation unit, flocculation basin I and the sedimentation basin I that connect gradually, the play water end and the mixed coagulation unit intercommunication of liquid back flow are divided to the whirling.
Preferably, mix the coagulation unit including the mixing tank I and the coagulation tank I that communicate in proper order, the play water end and the mixing tank I intercommunication of liquid back flow are divided soon, be connected with coagulant on the coagulation tank I and throw feeder equipment I.
Preferably, the sedimentation system I further comprises a target pollutant removal unit I, and the target pollutant removal unit I is connected to the front of the flocculation tank I.
Preferably, the sedimentation system II comprises a target pollutant removal unit II, a coagulation tank II, a flocculation tank II and a sedimentation tank II which are connected in sequence;
the water inlet end of the sludge reflux pump is connected to the bottom of the sedimentation tank II, and the sand outlet end of the micro-sand reflux pipe is connected to the flocculation tank II;
and the flocculation tank II is connected with a micro-sand feeding device.
Preferably, target pollutant gets rid of unit I including the desiliconization pond that connects gradually and remove hard pond, the end of intaking that removes the desiliconization pond is connected with the play water end that thoughtlessly congeals pond I, the play water end that removes hard pond and the end intercommunication of intaking of flocculation basin I.
Preferably, the target pollutant removal unit II comprises an activated carbon treatment tank, the water inlet end of the activated carbon treatment tank is connected with the water outlet end of the sedimentation tank I, and the water outlet end is communicated with the coagulation tank II.
Preferably, the target pollutant removing unit I comprises a first-stage defluorination tank, the water inlet end of the first-stage defluorination tank is connected with a sewage water inlet unit, and the water outlet end of the first-stage defluorination tank is communicated with the water inlet end of the mixing tank I.
Preferably, the target pollutant removal unit II comprises a secondary defluorination tank, the water inlet end of the secondary defluorination tank is communicated with the sedimentation tank I, and the water outlet end of the secondary defluorination tank is communicated with the coagulation tank II.
Drawings
Fig. 1 is a schematic structural diagram of the overall structure of the multimedia sewage advanced treatment system of the present application.
FIG. 2 is a schematic structural diagram of the overall structure of the advanced wastewater treatment system with multiple media according to the embodiment 1 of the present application.
FIG. 3 is a schematic structural diagram of the overall structure of the advanced wastewater treatment system with multiple media according to example 2 of the present application.
Reference numerals: 1. a precipitation system I; 11. a mixing and coagulating unit; 111. a mixing pool I; 112. a coagulation tank I; 1121. a coagulant adding device I; 12. a target pollutant removal unit I; 121. a silicon removal tank; 1211. a silicon removing agent feeding device; 122. a hard removing pool; 1221. a hardness removing agent feeding device; 13. a flocculation tank I; 131. a guide cylinder I; 1311. an overhead axial flow agitator; 1312. a flocculating agent feeding ring I; 14. a sedimentation tank I; 141. a mud scraper; 142. a sludge discharge pump; 143. a sludge reflux pump I; 144. an inclined tube settling zone I; 145. a water outlet groove I; 146. a water outlet channel; 2. a precipitation system II; 21. a target pollutant removal unit II; 211. an active carbon treatment tank; 2111. an activated carbon adding device; 22. a coagulation pool II; 221. a coagulant adding device II; 23. a flocculation pool II; 231. a guide cylinder II; 232. a fine sand feeding device; 233. a flocculating agent feeding ring II; 24. a sedimentation tank II; 241. an inclined tube settling zone II; 242. a water outlet groove II; 243. a clear water outlet channel; 3. a hydraulic rotary separation device; 31. a sludge reflux pump; 32. a rotary liquid separating return pipe; 33. a micro sand return pipe; 4. an original sewage inlet pipe; 5. a water passage; 6. a plug flow area; 7. a blender; 8. a primary defluorination tank; 81. a fluorine removing agent adding device I; 82. a fluoride on-line detector; 9. a secondary defluorination tank; 91. and a fluorine removing agent feeding device II.
Detailed Description
The present application is described in further detail below with reference to figures 1-3 and examples.
Example 1
As shown in figures 1 and 2, the multi-medium sewage advanced treatment system comprises an upstream sedimentation system I1, a downstream sedimentation system II 2 and a hydraulic cyclone device 3;
the sedimentation system I1 comprises a mixed coagulation unit 11, a target pollutant removal unit I12, a flocculation tank I13 and a sedimentation tank I14; the mixing and coagulating unit 11 comprises a mixing tank I111 and a coagulating tank I112; the target pollutant removal unit I12 comprises a silicon removal tank 121 and a hard removal tank 122;
the sedimentation system II 2 comprises a target pollutant removal unit II 21, a coagulation tank II 22, a flocculation tank II 23 and a sedimentation tank II 24 which are connected in sequence; the target pollutant removal unit II 21 comprises an activated carbon treatment tank 211;
the hydraulic cyclone device 3 is connected with a sludge reflux pump 31, a cyclone liquid reflux pipe 32 and a micro-sand reflux pipe 33.
As shown in fig. 2, along the water inlet direction of sewage, a mixing tank I111, a coagulation tank I112, a silicon removal tank 121, a hardness removal tank 122, a flocculation tank I13, a sedimentation tank I14, an activated carbon treatment tank 211, a coagulation tank II 22, a flocculation tank II 23 and a sedimentation tank II 24 are communicated in sequence; the water inlet end of the sludge reflux pump 31 is communicated with the sedimentation tank II 24, and the water outlet end of the sludge reflux pump 31 is communicated with the water inlet end of the hydraulic cyclone device 3; the water inlet end of the rotary liquid separation return pipe 32 is communicated with the water outlet end of the hydraulic rotary separation device 3, and the water inlet end of the rotary liquid separation return pipe 32 is communicated with the mixing pool I111; the sand inlet end of the micro-sand return pipe 33 is communicated with the sand outlet end of the hydraulic cyclone device 3, and the sand outlet end of the micro-sand return pipe 33 is communicated with the flocculation tank II 23.
As shown in fig. 2, an original sewage inlet pipe 4 is connected to the mixing pool i 111, the original sewage enters the mixing pool i 111, and the separated rotary separation liquid is conveyed into the mixing pool i 111 through a hydraulic rotary separation device 3 and a rotary separation liquid return pipe 32; install mixer 7 in the mixing tank I111, be favorable to original sewage and the intensive mixing of liquid of separating soon, the liquid of separating soon contains the active carbon, utilizes the adsorption characteristic of active carbon, the COD in the adsorbable sewage.
As shown in fig. 2, a coagulant adding device i 1121 is connected to the coagulation tank i 112, the mixed sewage enters the coagulation tank i 112, and a coagulant can be added to the sewage in the coagulation tank i 112 through the coagulant adding device i 1121; the mixer 7 is arranged in the coagulation tank I112, and under the action of the mixer 7, the sewage and the coagulant are quickly mixed, so that the colloid in the sewage is instantly destabilized to form fine alum flocs.
As shown in fig. 2, a silicon removing agent adding device 1211 is connected to the silicon removing tank 121, and a silicon removing agent can be added into the silicon removing tank 121 through the silicon removing agent adding device 1211; the silicon removal tank 121 is internally provided with a stirrer 7, under the action of the stirrer 7, the sewage is rapidly mixed with the silicon removal agent, and silicon in the sewage rapidly reacts with the silicon removal agent to generate complex silicate precipitate.
As shown in fig. 2, a hardness removing agent feeding device 1221 is connected to the hardness removing tank 122, and a hardness removing agent (sodium carbonate) can be fed into the hardness removing tank 122 through the hardness removing agent feeding device 1221; the hardness removing tank 122 is provided with a stirrer 7, and under the action of the stirrer 7, the sewage is rapidly mixed with a hardness removing agent (sodium carbonate) to generate magnesium hydroxide precipitate and/or calcium carbonate precipitate, so that the hardness of the sewage can be reduced.
As shown in figure 2, a guide cylinder I131 is installed in the flocculation tank I13, a water passing channel 5 is connected between the hardness removing tank 122 and the flocculation tank I13, a water inlet end of the water passing channel 5 is communicated with the bottom of the hardness removing tank 122, a water outlet end of the water passing channel 5 is communicated with the bottom of the guide cylinder I131, sewage in the hardness removing tank 122 can be conveyed to the bottom of the guide cylinder I131 through the water passing channel 5, and the sewage in the guide cylinder I131 enters and exits under water, so that flocs can be formed. An upward axial flow stirrer 1311 is installed in the draft tube I131, the upward axial flow stirrer 1311 comprises a variable frequency motor and a stirring shaft fixedly connected with an output shaft of the variable frequency motor, the stirring shaft is vertically installed in the draft tube I131, and the bottom of the stirring shaft is connected with stirring blades. The inner side of the guide shell I131 is located above the stirring blades, and the inner wall surrounding the guide shell I131 is connected with a flocculating agent feeding ring I1312. The draft tube I131 and the lifting type axial flow stirrer 1311 arranged in the draft tube I131 are matched with each other to form an internal circulation flow state, so that the growth and the uniformity of flocs are facilitated, a certain flow speed is kept by utilizing hydraulic conditions in the flocculation tank I13, and meanwhile, the formed flocs are not smashed.
As shown in figure 2, as shown in the figure, separate through the barricade between I13 of flocculation basin and the I14 of sedimentation tank, the top of barricade is jagged, install mounting bracket I on I13 of flocculation basin, the one side that is close to the barricade on the mounting bracket I is fixed with the diversion board, diversion board top prevents rivers and passes through, there is the space that supplies sewage to flow through diversion board bottom, the regional thrust zone 6 that forms between diversion board and the barricade, the sewage in I13 of flocculation basin flows from I13 bottom of flocculation basin, get into I14 of sedimentation tank through thrust zone 6 from I14 tops of sedimentation tank.
As shown in fig. 2, a mud scraper 141 is installed in the sedimentation tank i 14, the bottom of the sedimentation tank i 14 is connected with a sludge discharge pump 142, the input end of the sludge discharge pump 142 is communicated with the sedimentation tank i 14, and the output end of the sludge discharge pump 142 is connected with a sludge treatment unit. The sludge at the bottom of the sedimentation tank I14 is scraped to a sludge discharge port through the sludge scraper 141, so that the sludge is discharged into the sludge treatment unit through the sludge discharge pump 142, and the sludge is subjected to centralized treatment. I14 bottoms of sedimentation tank are connected with mud backwash pump I143, and the end of intaking of mud backwash pump I143 is held and I14 bottoms of sedimentation tank intercommunication, and the play water end and the water channel 5 intercommunication of mud backwash pump I143 are with partial mud backward flow to flocculation basin I13, are favorable to reducing the flocculation degree of difficulty of low turbid, microthermal sewage.
As shown in figure 2, a plurality of inclined pipes are arranged on the upper part of the tank body in the sedimentation tank I14 to form an inclined pipe sedimentation zone I144, a water outlet groove I145 is arranged above the inclined pipe sedimentation zone I144, the water outlet groove I145 is arranged on the tank wall of the sedimentation tank I14, and a water outlet channel 146 is connected to the top of the sedimentation tank I14 and surrounds the outer peripheral wall of the sedimentation tank I14. The sewage in the sedimentation tank I14 passes through the inclined tube sedimentation zone I144, enters the water outlet groove I145, and then overflows from the water outlet groove I145 to the water outlet channel 146.
As shown in FIG. 2, the water inlet end of the activated carbon treatment tank 211 is communicated with the water outlet channel 146, and the sewage treated by the sedimentation system I1 enters the sedimentation system II 2 for advanced treatment.
As shown in fig. 2, an activated carbon adding device 2111 is connected to the activated carbon treatment tank 211, and activated carbon can be added into the activated carbon treatment tank 211 through the activated carbon adding device 2111; the activated carbon treatment tank 211 is provided with a stirrer 7, the sewage and the activated carbon are rapidly mixed under the action of the stirrer 7, and the activated carbon can adsorb COD and the like in the water.
As shown in fig. 2, a coagulant adding device II 221 is connected to the coagulation tank II 22, sewage enters the coagulation tank II 22, and a coagulant can be added into the coagulation tank II 22 through the coagulant adding device II 221; the mixer 7 is arranged in the coagulation tank II 22, and under the action of the mixer 7, the sewage and the coagulant are quickly mixed, which is beneficial to the formation of flocs.
As shown in fig. 2, a guide cylinder II 231 and two baffles are arranged in the flocculation tank II 23, the guide cylinder II 231 is positioned between the two baffles, an installation frame II is arranged on the flocculation tank II 23, the top end of each baffle is connected with the installation frame II, the bottom end of each baffle is suspended, and the baffle close to the coagulation tank II 22 can prevent sewage from entering the top of the guide cylinder II 231 from the top of the coagulation tank II 22; the baffle close to the sedimentation tank II 24 can prevent the sewage coming out of the top of the guide shell II 231 from completely entering the sedimentation tank II 24, the sewage coming from the coagulation tank II 22 can enter from the bottom of the guide shell II 231, and the sewage in the guide shell II 231 enters and goes out underwater to form internal circulation, so that flocs can be formed. An upper lifting type axial flow stirrer II is installed in the guide cylinder II 231. And a flocculating agent feeding ring II 233 is connected to the inner wall surrounding the guide shell II 231. The guide shell II 231 is matched with the lifting type axial flow stirrer II arranged in the guide shell II 231, so that the growth and the uniformity of flocs are facilitated.
As shown in figure 2, a micro-sand feeding device 232 is connected to the flocculation tank II 23, and micro-sand can be fed into the flocculation tank II 23 through the micro-sand feeding device 232 or the micro-sand return pipe 33. The generated precipitate and the floc formed by the activated carbon are slowly gathered under the action of the flocculating agent and the micro-sand, and the formed floc is slowly enlarged and compacted by matching with the internal circulation of the draft tube II 231.
As shown in FIG. 2, a plurality of inclined pipes are arranged at the upper part of the tank body in the sedimentation tank II 24 to form an inclined pipe sedimentation zone II 241, a water outlet groove II 242 is arranged above the inclined pipe sedimentation zone II 241, the water outlet groove II 242 is arranged on the tank wall of the sedimentation tank II 24, and a clear water outlet channel 243 is connected to the top of the sedimentation tank II 24 and surrounds the outer peripheral wall of the sedimentation tank II 24. The sewage in the sedimentation tank II 24 passes through the inclined tube sedimentation zone II 241, enters the water outlet groove II 242, overflows from the water outlet groove II 242 into the clear water outlet channel 243, and clear water in the clear water outlet channel 243 is discharged outside.
Example 2
As shown in FIGS. 1 and 3, a multi-medium advanced wastewater treatment system of example 2 is different from that of example 1 only in that in example 2, a target pollutant removal unit I12 comprises a primary defluorination tank 8; the target pollutant removal unit II 21 comprises a secondary defluorination tank 9; along the water inlet direction of sewage, a primary defluorination tank 8, a mixing tank I111, a coagulation tank I112, a flocculation tank I13, a sedimentation tank I14, a secondary defluorination tank 9, a coagulation tank II 22, a flocculation tank II 23 and a sedimentation tank II 24 are communicated in sequence; the water inlet end of the sludge reflux pump 31 is communicated with the sedimentation tank II 24, and the water outlet end of the sludge reflux pump 31 is communicated with the water inlet end of the hydraulic cyclone device 3; the water inlet end of the rotary liquid separation return pipe 32 is communicated with the water outlet end of the hydraulic rotary separation device 3, and the water inlet end of the rotary liquid separation return pipe 32 is communicated with the mixing pool I111; the sand inlet end of the micro-sand return pipe 33 is communicated with the sand outlet end of the hydraulic cyclone device 3, and the sand outlet end of the micro-sand return pipe 33 is communicated with the sedimentation tank II 24.
As shown in fig. 3, a fluorine removal agent adding device i 81 is connected to the primary fluorine removal tank 8, and a fluorine removal agent (lime milk) can be added into the primary fluorine removal tank 8 through the fluorine removal agent adding device i 81; the fluorine removal tank is internally provided with a stirrer 7, the sewage and the fluorine removal agent are rapidly mixed under the action of the stirrer 7, and fluoride in the sewage is rapidly reacted with the fluorine removal agent, so that the fluoride in the sewage can be removed. The primary defluorination tank 8 is internally provided with a fluoride online detector 82 which can detect the content of fluoride in the primary defluorination tank 8.
As shown in fig. 3, the secondary defluorination tank 9 is connected with a defluorination agent adding device II 91, and the defluorination agent can be added into the secondary defluorination tank through the defluorination agent adding device II 91; the fluorine removal tank is internally provided with a stirrer 7, the sewage and the fluorine removal agent are rapidly mixed under the action of the stirrer 7, and fluoride in the sewage is rapidly reacted with the fluorine removal agent, so that the fluoride in the sewage can be removed.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The multi-medium sewage advanced treatment system is characterized by comprising an upstream sedimentation system I (1), a downstream sedimentation system II (2) and a hydraulic cyclone separation device (3); the hydraulic rotary separation device (3) is connected with a sludge return pump (31), a rotary separation liquid return pipe (32) and a micro-sand return pipe (33);
the water inlet end of the sludge reflux pump (31) is communicated with the downstream of the sedimentation system II (2), and the water outlet end is communicated with the water inlet end of the hydraulic cyclone separation device (3);
the water inlet end of the rotary liquid separation return pipe (32) is communicated with the water outlet end of the hydraulic rotary liquid separation device (3), and the water inlet end is connected to the upstream of the sedimentation system I (1);
and the sand inlet end of the micro-sand return pipe (33) is communicated with the sand outlet end of the hydraulic cyclone separation device (3), and the sand outlet end is communicated with the downstream of the sedimentation system II (2).
2. The multimedia advanced wastewater treatment system according to claim 1, wherein: the sedimentation system I (1) comprises a mixing coagulation unit (11), a flocculation tank I (13) and a sedimentation tank I (14) which are sequentially connected, and the water outlet end of the rotary liquid separation backflow pipe (32) is communicated with the mixing coagulation unit (11).
3. The multimedia advanced wastewater treatment system according to claim 2, wherein: the mixing and coagulating unit (11) comprises a mixing pool I (111) and a coagulating pool I (112) which are sequentially communicated, the water outlet end of the rotary liquid separating return pipe (32) is communicated with the mixing pool I (111), and a coagulant adding device I (1121) is connected to the coagulating pool I (112).
4. The multimedia advanced wastewater treatment system according to claim 3, wherein: the sedimentation system I (1) further comprises a target pollutant removal unit I (12), and the target pollutant removal unit I (12) is connected to the front of the flocculation tank I (13).
5. The multimedia advanced wastewater treatment system according to claim 4, wherein: the sedimentation system II (2) comprises a target pollutant removal unit II (21), a coagulation tank II (22), a flocculation tank II (23) and a sedimentation tank II (24) which are connected in sequence;
the water inlet end of the sludge reflux pump (31) is connected to the bottom of the sedimentation tank II (24), and the sand outlet end of the micro-sand reflux pipe (33) is connected to the flocculation tank II (23);
and a micro-sand feeding device (232) is connected to the flocculation tank II (23).
6. The multimedia advanced wastewater treatment system according to claim 5, wherein: target pollutant removes unit I (12) including what connect gradually except that silicon pond (121) and remove hard pond (122), the end of intaking that removes silicon pond (121) is connected with the play water end of coagulating basin I (112), the play water end that removes hard pond (122) and the end intercommunication of intaking of flocculating basin I (13).
7. The multimedia advanced wastewater treatment system according to claim 6, wherein: the target pollutant removal unit II (21) comprises an activated carbon treatment tank (211), the water inlet end of the activated carbon treatment tank (211) is connected with the water outlet end of the sedimentation tank I (14), and the water outlet end is connected with the coagulation tank II (22).
8. The multimedia advanced wastewater treatment system according to claim 5, wherein: target pollutant removes unit I (12) and includes one-level defluorination pond (8), the end of intaking in one-level defluorination pond (8) is connected with sewage water inlet unit, the play water end in one-level defluorination pond (8) and the end intercommunication of intaking in mixed pond I (111).
9. The multimedia advanced wastewater treatment system according to claim 8, wherein: the target pollutant removal unit II (21) comprises a secondary defluorination tank (9), the water inlet end of the secondary defluorination tank (9) is communicated with the sedimentation tank I (14), and the water outlet end of the secondary defluorination tank is communicated with the coagulation tank II (22).
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| CN112830603A (en) * | 2021-01-20 | 2021-05-25 | 北京翰祺环境技术有限公司 | Multi-medium sewage advanced treatment system |
| CN112830603B (en) * | 2021-01-20 | 2024-05-07 | 北京翰祺环境技术有限公司 | Multi-medium sewage advanced treatment system |
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