CN212174734U - Chemical synthesis type pharmaceutical wastewater treatment system for pollutants difficult to degrade - Google Patents
Chemical synthesis type pharmaceutical wastewater treatment system for pollutants difficult to degrade Download PDFInfo
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- CN212174734U CN212174734U CN202020603303.3U CN202020603303U CN212174734U CN 212174734 U CN212174734 U CN 212174734U CN 202020603303 U CN202020603303 U CN 202020603303U CN 212174734 U CN212174734 U CN 212174734U
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Abstract
The utility model discloses a chemical synthesis pharmaceutical wastewater treatment system for refractory pollutants, which comprises a pretreatment system, a physicochemical treatment system, a biological treatment system and a sludge treatment system, wherein wastewater enters a regulating tank after passing through a grid, is lifted to a filtering system by a pump for further purification, and is discharged after reaching the standard; and residual sludge generated by the catalytic oxidation reactor, the ABR anaerobic reaction tank, the secondary sedimentation tank and the coagulation reaction sedimentation tank enters a sludge concentration tank, and supernatant of the sludge concentration tank flows back to the regulating tank. The utility model discloses it is economical feasible, be one kind and be used for handling difficult degradation pollutant chemical synthesis class pharmacy waste water system specially, overcome the bottleneck that current chemical synthesis class pharmacy waste water meets with, guaranteed the steady operation of operating system and go out the stable up to standard of water quality, also reduced the pollution to receiving the water simultaneously, improved water environmental quality.
Description
Technical Field
The utility model belongs to the waste water treatment field relates to a synthetic pharmacy effluent disposal system of difficult degradation pollutant chemistry, especially a synthetic pharmacy effluent disposal system of chemistry who is used for "pollutant concentration is high, the biodegradability is poor, the biotoxicity is high, the difficult processing of pollutant" specially.
Technical Field
With the attention of people on living and health level, the pharmaceutical industry develops rapidly, especially the chemical synthesis pharmaceutical industry, and the production wastewater seriously threatens the water environment on which people live. The chemical synthesis pharmaceutical wastewater has complex pollutant components, large water quality and water quantity change and unstable water quality. The outstanding problems of high pollutant concentration, poor biodegradability, high biotoxicity and difficult pollutant treatment are the significant problems of the chemical synthesis pharmaceutical wastewater, so that the effective treatment of the chemical synthesis pharmaceutical wastewater has a larger bottleneck.
The existing chemical synthesis pharmaceutical wastewater treatment system still has the defects that equipment cannot stably operate and the quality of effluent cannot stably reach the standard, and is particularly a chemical synthesis pharmaceutical wastewater treatment system for pollutants difficult to degrade. At present, a treatment system special for chemical synthesis pharmaceutical wastewater of refractory pollutants does not exist, so that the wastewater treatment system can be ensured to stably operate for a long time, and the quality of the effluent can stably reach the standard.
Disclosure of Invention
In order to overcome exist not enough among the above-mentioned prior art, the utility model provides a system that is practical feasible, be used for specially handling difficult degradation pollutant chemical synthesis class pharmaceutical wastewater adopts "grid/equalizing basin + catalytic oxidation + ABR anaerobism + good oxygen + secondary sedimentation tank + coagulating sedimentation + active carbon filtration" combined technology to handle sewage, guarantees that chemical synthesis class pharmaceutical wastewater goes out water quality of water and can stabilize up to standard, reduces the pollution of waste water to receiving the water to effectively improve water environmental quality.
The purpose of the utility model is realized like this:
a system for treating refractory pollutant chemical synthesis type pharmaceutical wastewater is characterized in that: the grating ditch 1 is internally provided with a grating 2, wastewater enters an adjusting tank 3 after passing through the grating 2, is lifted to a catalytic oxidation reactor 6 through an adjusting tank lifting pump 4, then enters an ABR anaerobic reaction tank 7 to be subjected to anaerobic biodegradation treatment, effluent enters an aerobic tank 10, the effluent of the aerobic tank 10 enters a secondary sedimentation tank 14 to be subjected to mud-water separation, the effluent of the secondary sedimentation tank 14 automatically flows into a coagulation reaction sedimentation tank 18, pollutants are further subjected to flocculation precipitation separation, the effluent of the coagulation reaction sedimentation tank 18 enters an intermediate water tank 20 to be stored, is lifted to a filtering system through a filtering lifting pump 23 to be further purified, and is discharged up to the standard.
The grating 2 is connected with the adjusting tank 3, and the grating 2 is used for intercepting large-size floating objects and suspended matters in the sewage; the adjusting tank 3 is used for adjusting water quality and water quantity, and is additionally provided with an aerobic tank aeration disc 11 for timed micro-aeration.
The catalytic oxidation reactor 6 comprises the stages of catalysis, coagulation, precipitation and the like in H2O2(Hydrogen peroxide) dosing tank 29 and FeSO4In the (ferrous sulfate) dosing tank 32, the (ferrous sulfate) solution passes through H2O2Dosing pipeline 31 and FeSO4Adding a drug pipeline 34, adding a Fenton reagent (comprising hydrogen peroxide and ferrous sulfate) for catalytic oxidation reaction, wherein the stirring mode is air stirring, iron ions generated by catalytic oxidation react with hydroxide radicals provided by a NaOH drug adding pipeline 37 to generate ferric hydroxide colloidal precipitate, and the ferric hydroxide colloidal precipitate and Polyacrylamide (PAM) added by a PAM drug adding pipeline 43 are subjected to coagulation reactionAnd (3) forming alum floc easy to precipitate, wherein the stirring mode is mechanical stirring, precipitates formed by coagulation reaction are precipitated in a precipitation tank, the generated sludge enters a sludge concentration tank 25, and the supernatant automatically flows into an ABR anaerobic reaction tank 7.
The ABR anaerobic reaction tank 7 is provided with an elastic three-dimensional filler 8 which is connected with an internal reflux pump 9 for anaerobic biodegradation treatment.
An aeration disc 11 of the aerobic tank is arranged in the aerobic tank 10, the generated oxygen is distributed in the tank through an aeration pipeline 12 of the aerobic tank, pollutants in water are decomposed and digested by microorganisms attached to a filler 13 of the aerobic tank, organic matters are degraded into water and carbon dioxide, most of the pollutants are removed, and the water quality is purified.
The secondary sedimentation tank 14 is provided with a sludge discharge pump 16, most of sludge after sedimentation and concentration is taken as inoculated sludge to flow back to the aerobic tank 10, and activated sludge and other solid matters suspended in the sludge are precipitated and separated from water under the action of the inclined tube filler 15 of the secondary sedimentation tank.
The coagulation reaction sedimentation tank 18, the reaction zone and the sedimentation zone are respectively provided with a stirrer 17 and an inclined tube filler 19, and PAC/PAM coagulant and coagulant aid are added into water through a PAC dosing pipeline 40 and a PAM dosing pipeline 43, so that particles which are difficult to precipitate in the water can be mutually polymerized to form colloid, and then are combined with impurities in the water body to form a larger flocculating constituent.
The water inlet and outlet of the middle water tank 20 are respectively provided with a water inlet pipeline 21 and an overflow pipeline 22, and the rear part of the middle water tank is connected with a filtering lift pump 23.
The activated carbon filter 24 is backwashed after running for a period of time, the backwashing water uses the water in the intermediate water tank 20, and the backwashing water enters the regulating tank 3.
The sludge concentration tank 25 is provided with a sludge discharge pipeline 26, the rear part of the sludge concentration tank is provided with a sludge screw pump 27, sludge is conveyed to a sludge filter press 28, dewatered sludge is transported out for treatment, and the outlet water of the filter press enters the regulating tank 3.
The residual sludge generated by the catalytic oxidation reactor 6, the ABR anaerobic reaction tank 7, the secondary sedimentation tank 14 and the coagulation reaction sedimentation tank 18 enters a sludge concentration tank 25, the supernatant of the sludge concentration tank 25 flows back to the regulating tank 3, the sludge in the sludge tank is subjected to filter pressing and dehydration by a sludge filter press 28 and then is transported outwards, and the filter pressing liquid returns to the regulating tank 3.
Has the positive and beneficial effects that: the utility model relates to a system that economic feasible, be used for specially handling difficult degradation pollutant chemical synthesis class pharmacy waste water has overcome the bottleneck problem that current effective handling chemical synthesis class pharmacy waste water meets with, has reduced the pollution to the water environment simultaneously.
Drawings
Figure 1 schematic diagram of the system structure of the present invention
In the figure: the system comprises a grid channel 1, a grid 2, a regulating tank 3, a regulating tank lifting pump 4, a regulating tank micro-aeration device 5, a catalytic oxidation reactor 6, an ABR anaerobic reaction tank 7, elastic three-dimensional packing 8, an internal reflux pump 9, an aerobic tank 10, an aerobic tank aeration disc 11, an aerobic tank aeration pipeline 12, aerobic tank packing 13, a secondary sedimentation tank 14, secondary sedimentation tank inclined pipe packing 15, a sludge discharge pump 16, a stirrer 17, a coagulation reaction sedimentation tank 18, inclined pipe packing 19, an intermediate water tank 20, a water inlet pipeline 21, an overflow pipeline 22, a filtration lifting pump 23, an activated carbon filter 24, a sludge concentration tank 25, a sludge discharge pipeline 26, a sludge screw pump 27, a sludge filter press 28, an H filter press pump, a sludge filter, a sludge concentration tank 252O2Dosing pool 29, H2O2Dosing pumps 30, H2O2Dosing pipeline 31, FeSO4The dosing pool 32 and FeSO4Dosing pump 33, FeSO4 A dosing pipeline 34, a NaOH dosing tank 35, a NaOH dosing pump 36, a NaOH dosing pipeline 37, a PAC dosing tank 38, a PAC dosing pump 39, a PAC dosing pipeline 40, a PAM dosing tank 41, a PAM dosing pump 42, a PAM dosing pipeline 43 and a sludge discharge pump 44.
Detailed Description
The invention will be further explained with reference to the drawings:
as shown in fig. 1, a system for treating pharmaceutical wastewater from chemical synthesis of refractory pollutants is characterized in that: the device comprises a grid channel 1 and a regulating reservoir 3 connected with the grid channel 1, wherein a grid 2 is arranged in the grid channel 1, wastewater is lifted to a catalytic oxidation reactor 6 through a regulating reservoir lifting pump 4, then enters an ABR anaerobic reaction tank 7 to be subjected to anaerobic biodegradation treatment, effluent enters an aerobic tank 10, effluent from the aerobic tank enters a secondary sedimentation tank 14 to be subjected to mud-water separation, effluent from the secondary sedimentation tank 14 naturally flows into a coagulation reaction sedimentation tank 18, pollutants are further subjected to flocculation precipitation separation, effluent from the coagulation reaction sedimentation tank 18 enters an intermediate water tank 20 to be stored, and is lifted to a filtering system through a filtering lifting pump 23 to be further purified and discharged up to the standard.
The method comprises the following steps that pharmaceutical wastewater enters a grid channel 1, and floating objects and suspended matters with larger sizes in the wastewater are intercepted by a grid 2; the adjusting tank 3 is connected with the grid channel 1 and used for adjusting water quality and water quantity, and an aerobic tank aeration disc 11 is additionally arranged for timed micro-aeration.
The wastewater enters a catalytic oxidation reactor 6 in turn, and is treated in a reaction system H2O2Dosing tank 29 and FeSO4In the medicine adding pool 32, respectively pass through H2O2Dosing pipeline 31 and FeSO4Adding a medicine pipeline 34, adding a Fenton reagent to perform catalytic oxidation reaction, wherein the stirring mode is air stirring, iron ions generated by catalytic oxidation react with hydroxide radicals provided by a NaOH medicine adding pipeline 37 to generate ferric hydroxide colloidal precipitate, and the ferric hydroxide colloidal precipitate and PAM added through a PAM medicine adding pipeline 43 perform coagulation reaction to form alum blossom easy to precipitate, the stirring mode is mechanical stirring, precipitate formed by the coagulation reaction is precipitated in a precipitation tank, generated sludge enters a sludge concentration tank 25, and supernatant automatically flows into an ABR anaerobic reaction tank 7.
An elastic three-dimensional filler 8 is arranged in the ABR anaerobic reaction tank 7 and is connected with an internal reflux pump 9 to carry out anaerobic biodegradation treatment on the wastewater.
An aerobic tank aeration disc 11 is arranged in the aerobic tank 10, the generated oxygen is distributed in the tank through an aerobic tank aeration pipeline 12, the pollutants in the water are decomposed and digested by microorganisms attached to an aerobic tank filler 13, the organic matters are degraded into water and carbon dioxide, most of the pollutants are removed, and the water quality is purified.
A sludge discharge pump 16 is arranged in the secondary sedimentation tank 14, most of the sludge after sedimentation and concentration is taken as inoculated sludge and flows back to the aerobic tank 10, and activated sludge and other solid matters suspended in the sludge are separated from water under the action of an inclined tube filler 15 of the secondary sedimentation tank.
The method is characterized in that a stirrer 17 and an inclined tube filler 19 are respectively arranged in a reaction zone and a precipitation zone of a coagulation reaction sedimentation tank 18, a PAC/PAM coagulant and a coagulant aid are respectively added into wastewater in a PAC dosing tank 38 and a PAM dosing tank 41 through a PAC dosing pipeline 40 and a PAM dosing pipeline 43, so that particles which are difficult to precipitate in water can be mutually polymerized to form colloid, and then are combined with impurities in a water body to form a larger flocculating constituent.
The water inlet and outlet of the middle water tank 20 are respectively provided with a water inlet pipeline 21 and an overflow pipeline 22, and the rear part of the middle water tank is connected with a filtering lift pump 23.
The activated carbon filter 24 is operated for a period of time and then is backwashed, the water in the intermediate water tank 20 is used as the backwashing water, and the backwashing water enters the regulating tank 3.
The sludge concentration tank 25 is provided with a sludge discharge pipeline 26, the rear part of the sludge concentration tank is provided with a sludge screw pump 27, sludge is conveyed to a sludge filter press 28, dewatered sludge is transported out for treatment, and the outlet water of the filter press enters the regulating tank 3.
The residual sludge generated by the catalytic oxidation reactor 6, the ABR anaerobic reaction tank 7, the secondary sedimentation tank 14 and the coagulation reaction sedimentation tank 18 enters a sludge concentration tank 25, the supernatant of the sludge concentration tank 25 flows back to the regulating tank 3, the sludge in the sludge tank is subjected to filter pressing and dehydration by a sludge filter press 28 and then is transported outwards, and the filter pressing liquid returns to the regulating tank 3.
Example 1
The wastewater volume of a sewage treatment station of a certain chemical synthesis pharmaceutical enterprise in Henan is 100m3The quality of inlet water is COD5500mg/L, BOD51300mg/L、SS150mg/L、NH3-N15mg/L, TN20mg/L, chroma 20 times, TP1mg/L, methylene chloride 60mg/L, total organic carbon 1100 mg/L.
The grating channel 1 is arranged, and the artificial grating 2 is obliquely arranged in a water inlet channel to intercept larger suspended matters and impurities in sewage and ensure the normal operation of subsequent treatment structures or equipment.
Effective volume 103m of regulating reservoir 33The front end of the device is connected with a grid canal 1 and is provided with two sewage lifting pumps 4 (1 is used for 1) and a set of adjusting pool micro-aeration device 5, and the adjusting pool micro-aeration device 5 is subjected to air aeration stirring by an air blower, so that the muddy water is uniformly mixed, and the sludge deposition is effectively prevented.
The hydraulic retention time of the catalytic oxidation reactor 6 is 4.5h, and the catalytic oxidation reactor comprises the stages of catalysis, coagulation, precipitation and the like. At H2O2Dosing tank 29 and FeSO4In the medicine adding pool 32, the medicine passes through H2O2Dosing pipeline 31 and FeSO4Adding a medicine pipeline 34, adding a Fenton reagent to perform catalytic oxidation reaction, removing COD, improving the biodegradability of the wastewater, and stirring in an air stirring mode. Iron ions generated by catalytic oxidation react with hydroxide radicals provided by the NaOH dosing pipeline 37 to generate ferric hydroxide colloidal precipitate, and the ferric hydroxide colloidal precipitate and PAM added by the PAM dosing pipeline 43 are subjected to coagulation reaction to form alum floc easy to precipitate, and the stirring mode is mechanical stirring. The precipitate formed by the coagulation reaction is precipitated in a precipitation tank, the generated sludge enters a sludge concentration tank 25, and the supernatant automatically flows into an ABR anaerobic reaction tank 7.
The effective volume of the ABR anaerobic reaction tank 7 is 105m3The retention time is 25h, two internal reflux pumps 9 (1 is used for 1) are arranged, and the volume of the elastic three-dimensional filler 8 is 70m3And is connected with an internal reflux pump 9 for anaerobic biodegradation treatment.
The effective volume of the aerobic tank 10 is 105m3And the hydraulic retention time is 25 hours, an aeration disc 11 of the aerobic tank is arranged, the generated oxygen is distributed in the tank through an aeration pipeline 12 of the aerobic tank, the microorganisms attached to a filler 13 of the aerobic tank decompose and digest pollutants in water, the organic matters are degraded into water and carbon dioxide, most of the pollutants are removed, and the water quality is purified.
Two sludge pumps 16 (1 is used as a spare pump) are arranged in the secondary sedimentation tank 14, and most of sludge after sedimentation and concentration is used as inoculation sludge to return to the aerobic tank 10. The muddy water flowing in through the water inlet pipeline of the secondary sedimentation tank is precipitated from the activated sludge and other solid matters suspended in the mixed solution and separated from the water under the action of the inclined tube filler 15 of the secondary sedimentation tank.
The coagulation reaction sedimentation tank 18, the reaction zone and the sedimentation zone are respectively provided with two stirrers 17 and an inclined tube filler 19, and PAC dosing tanks 38 and PAM dosing tanks 41 are internally provided with PAC/PAM coagulant and coagulant aid which are added into water through PAC dosing pipelines 40 and PAM dosing pipelines 43, so that particles which are difficult to precipitate in the water can be mutually polymerized to form colloid, and then are combined with impurities in the water body to form a larger flocculating constituent.
The water inlet and outlet of the middle water tank 20 are respectively provided with a water inlet pipeline 21 and an overflow pipeline 22, and two filtering lift pumps 23 (1 is used for 1) are connected behind the middle water tank.
The activated carbon filter 24 is operated for a period of time and then is backwashed (the filtration lift pump 23 is also used as a backwash pump), the backwash water uses the water in the intermediate water tank 20, the power is provided by the filtration lift pump 23 in the intermediate water tank 20, and the backwash water enters the regulating tank 3 to ensure that the dichloromethane reaches the standard.
The sludge concentration tank 25 is provided with a sludge discharge pipeline 26, the rear part of the sludge concentration tank is provided with a sludge screw pump 27, sludge is conveyed to a sludge filter press 28, dewatered sludge is conveyed outwards for treatment, and the outlet water of the filter press enters the regulating tank 3.
And residual sludge generated by the catalytic oxidation reactor 6, the ABR anaerobic reaction tank 7, the secondary sedimentation tank 14 and the coagulation reaction sedimentation tank 18 enters a sludge concentration tank 25. The supernatant of the sludge concentration tank 25 flows back to the regulating tank 3, the sludge in the sludge tank is subjected to pressure filtration and dehydration by a sludge filter press 28 and then is transported outward for disposal, and the pressure filtrate returns to the regulating tank 3.
The quality of the effluent water passing through the sewage treatment system meets the requirements of 'indirect discharge standard of chemical synthesis pharmaceutical industry water pollutants' (DB 41/756-2012) in Table 1 and Standard B, and specifically comprises the following steps: COD is less than or equal to 220mg/L, BOD5≤40mg/L、SS≤50mg/L、NH3N is less than or equal to 35mg/L, TN and less than or equal to 50mg/L, chroma is less than or equal to 50 times, methylene dichloride is less than or equal to 0.3mg/L, and total organic carbon is less than or equal to 50 mg/L.
The wastewater treatment system is not only suitable for the chemical synthesis pharmaceutical wastewater treatment system of the refractory pollutants, but also suitable for the wastewater of other traditional Chinese medicine extraction industries with similar characteristics.
The above embodiments are only for illustrating the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be covered within the technical scope of the claimed invention within the knowledge of those skilled in the art.
Claims (9)
1. The utility model provides a refractory pollutant chemical synthesis class pharmacy effluent disposal system which characterized in that: set up grid (2) in grid ditch (1), waste water gets into equalizing basin (3) behind grid (2), promote to catalytic oxidation reactor (6) through equalizing basin elevator pump (4), then get into ABR anaerobic reaction pond (7), carry out anaerobic biodegradation and handle, it gets into good oxygen pond (10) to go out water, good oxygen pond (10) are gone out water and are got into two heavy ponds (14) and carry out mud-water separation, two heavy ponds (14) are gone out water gravity flow and are got into coagulation reaction sedimentation tank (18), the further flocculation and precipitation separation of pollutant, coagulation reaction sedimentation tank (18) are gone out water and are got into middle pond (20) and store, promote to filtration system further after purifying through straining elevator pump (23), discharge to reach standard.
2. The system for treating pharmaceutical wastewater generated by chemical synthesis of refractory pollutants according to claim 1, wherein the system comprises: the grating (2) is connected with the adjusting tank (3), and the grating (2) is used for intercepting large-size floaters and suspended matters in the sewage to ensure the normal operation of sewage treatment facilities; the water quality and the water quantity are adjusted in the adjusting tank (3) to ensure that the subsequent working section can uniformly feed water, and in addition, an adjusting tank micro-aeration device (5) is arranged in the adjusting tank (3) to perform timed micro-aeration and play roles in pre-aeration and stirring.
3. The system for treating pharmaceutical wastewater generated by chemical synthesis of refractory pollutants according to claim 1, wherein the system comprises: the catalytic oxidation reactor (6) comprises a catalysis stage, a coagulation stage and a precipitation stage in H2O2A dosing pool (29) and FeSO4In the medicine adding pool (32), the medicine passes through H2O2A dosing pipeline (31) and FeSO4Add medicine pipeline (34), add the Fenton reagent and carry out catalytic oxidation, get rid of COD, improve the biodegradability of waste water, the stirring mode is air stirring, the iron ion that catalytic oxidation produced and the hydroxyl that adds medicine pipeline (37) through NaOH take place the reaction and generate the ferric hydroxide colloidal sediment to PAM with PAM that PAM adds medicine pipeline (43) added takes place coagulation reaction, form the alum blossom that easily deposits, the stirring mode is mechanical stirring, the institute of coagulation reactionThe formed precipitate is precipitated in a precipitation tank, the generated sludge enters a sludge concentration tank (25), and the supernatant automatically flows into an ABR anaerobic reaction tank (7).
4. The system for treating pharmaceutical wastewater generated by chemical synthesis of refractory pollutants according to claim 1, wherein the system comprises: the ABR anaerobic reaction tank (7) is provided with an elastic three-dimensional filler (8) which is connected with an internal reflux pump (9) for anaerobic biodegradation treatment.
5. The system for treating pharmaceutical wastewater generated by chemical synthesis of refractory pollutants according to claim 1, wherein the system comprises: an aeration disc (11) of the aerobic tank is arranged in the aerobic tank (10), the generated oxygen is distributed in the tank through an aeration pipeline (12) of the aerobic tank, pollutants in water are decomposed and digested by microorganisms attached to a filler (13) of the aerobic tank, organic matters are degraded into water and carbon dioxide, most of the pollutants are removed, and the water quality is purified.
6. The system for treating pharmaceutical wastewater generated by chemical synthesis of refractory pollutants according to claim 1, wherein the system comprises: the secondary sedimentation tank (14) is provided with a sludge discharge pump (16), most of sludge after sedimentation and concentration is taken as inoculated sludge to flow back to the aerobic tank (10) so as to ensure the concentration of suspended solid in the aerobic reactor, and the sludge water flowing in through a water inlet pipeline of the secondary sedimentation tank is sedimentated and separated from other solid matters in the mixed liquid under the action of an inclined tube filler (15) of the secondary sedimentation tank.
7. The system for treating pharmaceutical wastewater generated by chemical synthesis of refractory pollutants according to claim 1, wherein the system comprises: the coagulation reaction sedimentation tank (18), reaction zone and sedimentation zone are provided with agitator (17) and pipe chute filler (19) respectively, in PAC dosing tank (38) and PAM dosing tank (41), PAC/PAM coagulant and coagulant aid are added into water through PAC dosing pipeline (40) and PAM dosing pipeline (43), so that particles which are difficult to precipitate in water can be polymerized mutually to form colloid, and then are combined with impurities in water to form larger flocculating constituents.
8. The system for treating pharmaceutical wastewater generated by chemical synthesis of refractory pollutants according to claim 3, wherein the system comprises: the sludge concentration tank (25) is provided with a sludge discharge pipeline (26), a sludge screw pump (27) is arranged behind the sludge concentration tank, sludge is conveyed to a sludge filter press (28), dewatered sludge is conveyed out for treatment, and the outlet water of the filter press enters the regulating tank (3).
9. The system for treating pharmaceutical wastewater generated by chemical synthesis of refractory pollutants according to any one of claims 3, 4, 6, 7 and 8, wherein the system comprises: excess sludge generated by the catalytic oxidation reactor (6), the ABR anaerobic reaction tank (7), the secondary sedimentation tank (14) and the coagulation reaction sedimentation tank (18) enters a sludge concentration tank (25), supernatant of the sludge concentration tank (25) flows back to the regulating tank (3), sludge in the sludge tank is transported and disposed after being subjected to filter pressing and dehydration by a sludge filter press (28), and filter pressing liquid returns to the regulating tank (3).
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| CN202020603303.3U CN212174734U (en) | 2020-04-21 | 2020-04-21 | Chemical synthesis type pharmaceutical wastewater treatment system for pollutants difficult to degrade |
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| CN202020603303.3U CN212174734U (en) | 2020-04-21 | 2020-04-21 | Chemical synthesis type pharmaceutical wastewater treatment system for pollutants difficult to degrade |
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