CN212559892U - Aluminum product waste water treatment system - Google Patents
Aluminum product waste water treatment system Download PDFInfo
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- CN212559892U CN212559892U CN202022027781.7U CN202022027781U CN212559892U CN 212559892 U CN212559892 U CN 212559892U CN 202022027781 U CN202022027781 U CN 202022027781U CN 212559892 U CN212559892 U CN 212559892U
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Abstract
The utility model discloses an aluminum product production wastewater treatment system, which comprises a concentrated water adjusting tank, a demulsification oil separation tank, a fresh water adjusting tank, a coagulation tank, an air flotation machine, an aerobic tank and a secondary sedimentation tank; the water outlet of the concentrated water adjusting tank is connected with the water inlet of the demulsification oil separation tank through a pump, the water outlet of the demulsification oil separation tank is connected with the water inlet of the fresh water adjusting tank through a pipeline, the water outlet of the fresh water adjusting tank is connected with the water inlet of the coagulating sedimentation tank through a pump, the water outlet of the coagulating sedimentation tank is connected with the water inlet of the air flotation machine through a pipeline, the water outlet of the air flotation machine is connected with the water inlet of the aerobic tank through a pipeline, and the water outlet of the aerobic tank is connected with the inlet port of the secondary sedimentation tank through a pipeline. The utility model discloses a two steps are divided into to thoughtlessly congeal the pretreatment process that + air supporting combined together and get rid of the fluoride, have improved the overall clearance of fluoride, have realized the emission of the one-level A standard of aluminium product waste water.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to an aluminium product waste water treatment system.
Background
The waste water produced in the pop can production is mainly generated in the processes of stretching and washing the pop can, and the waste water comprises the following basic components: the system comprises emulsion-containing wastewater generated by a stretcher, cleaning wastewater generated by a tank washing machine, regeneration wastewater generated by a deionized water system, terrace cleaning water and reverse osmosis concentrated water.
In the wastewater produced by the pop can, the total concentration of organic matters is not high but the biodegradability is poor, raw water contains a large amount of suspended matters, the concentration of fluoride in the wastewater is high, and the wastewater contains parts of components such as petroleum and surfactant, and the COD can be controlled to be between 150 and 200mg/L by adopting the traditional treatment process, so that the discharge requirement of the first-class A standard, namely the COD is less than or equal to 50mg/L, is difficult to meet.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an aluminum product waste water treatment system.
In order to achieve the above object, the present invention provides the following technical solutions:
a treatment system for aluminum product production wastewater comprises a concentrated water adjusting tank, a demulsification oil separation tank, a fresh water adjusting tank, a coagulation tank, an air flotation machine, an aerobic tank and a secondary sedimentation tank;
the water outlet of the concentrated water adjusting tank is connected with the water inlet of the demulsification oil separation tank through a pump, the water outlet of the demulsification oil separation tank is connected with the water inlet of the fresh water adjusting tank through a pipeline, the water outlet of the fresh water adjusting tank is connected with the water inlet of the coagulation tank through a pump, the water outlet of the coagulation tank is connected with the water inlet of the air floatation machine through a pipeline, the water outlet of the air floatation machine is connected with the water inlet of the aerobic tank through a pipeline, and the water outlet of the aerobic tank is connected with the inlet port of the secondary sedimentation tank through a pipeline.
Preferably, the concentrated water adjusting tank is provided with an aeration device for stirring periodically to prevent sludge from precipitating.
Preferably, the demulsification oil separation tank is connected with an acid adding device.
Preferably, the fresh water adjusting tank is provided with an aeration device for stirring periodically to prevent sludge from precipitating.
Preferably, the reaction zone of the coagulation tank is connected with a dosing device.
Preferably, the dosing devices include an alkali dosing device, a calcium chloride dosing device, a PAC dosing device, and a PAM dosing device.
Preferably, the sedimentation area of the coagulation tank is provided with an inclined pipe to improve sedimentation efficiency.
Preferably, a sludge discharge pipe is arranged at the bottom of the sedimentation area of the coagulation tank and is connected with the sludge concentration tank.
Preferably, the front end of the air floatation machine is connected with the calcium chloride dosing device, the PAC dosing device and the PAM dosing device.
Preferably, the aerobic tank is provided with a microorganism strengthening device, a feed inlet, a discharge opening and a liquid adding opening, the feed inlet is connected with the middle section of the aerobic tank through a pump, the discharge opening is connected with the front section of the aerobic tank, and the liquid adding opening is connected with a culture solution storage tank through a pump; the microorganism strengthening device periodically extracts activated sludge from the middle section of the aerobic tank through the feeding hole to rejuvenate strains, and discharges the rejuvenated activated sludge into the front section of the aerobic tank through the discharging hole, so that the strengthening function of aerobic microorganisms is realized.
Preferably, the secondary sedimentation tank is connected with the sludge concentration tank through a sludge pump.
Preferably, the aluminum product production wastewater treatment system further comprises a sludge dewatering device, and the sludge dewatering device is a plate-and-frame filter press.
Preferably, the aluminum product production wastewater treatment system further comprises an anaerobic tank, and the anaerobic tank is positioned at the front end of the aerobic tank.
The utility model has the advantages that:
(1) the utility model realizes the discharge of the first-level A standard of the wastewater generated in the aluminum product production, separately collects the high-concentration wastewater containing the emulsion and other wastewater, adopts an independent pretreatment process, reduces the equipment investment, improves the pretreatment effect and reduces the operating cost;
(2) a pretreatment process combining coagulation and air floatation is selected, and fluoride is removed in two steps, so that the total removal rate of the fluoride is improved;
(3) the microbial strengthening device is utilized to expand and cultivate the dominant strains on a large scale, so that the number of the dominant strains in the aerobic tank is maintained at 1.0 multiplied by 109Above CFU/mL, the capability of the microorganism for decomposing organic matters is improved, and meanwhile, the proliferation of other microorganisms such as filamentous bacteria and actinomycetes can be controlled, and the sludge bulking and the formation of biological foams are inhibited.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of the overall structure according to the present invention.
Detailed Description
Example 1 treatment of wastewater from aluminum production
The concentrated water COD for treating the aluminum product production wastewater is 550-550 mg/L and contains 0.5-1% of emulsion, the emulsion mainly comprises mineral oil, vegetable oil, synthetic ester and other substances, the biodegradability is low (B/C is less than 0.2), the COD for biochemical treatment by the conventional treatment process can only reach 150-100-mg/L, and when the effluent standard is stricter, the effects of adopting ozone, Fenton and the like at the rear section of a biochemical pool are not ideal.
The aluminum product production wastewater treatment system shown in fig. 1 comprises a concentrated water adjusting tank 1, a demulsification oil separation tank 2, a fresh water adjusting tank 3, a coagulation tank 4, an air flotation machine 5, an aerobic tank 6 and a secondary sedimentation tank 7;
the water outlet of the concentrated water adjusting tank 1 is connected with the water inlet of the demulsification oil separating tank 2 through a pump, the water outlet of the demulsification oil separating tank 2 is connected with the water inlet of the fresh water adjusting tank 3 through a pipeline, the water outlet of the fresh water adjusting tank 3 is connected with the water inlet of the coagulation tank 4 through a pump, the water outlet of the coagulation tank 4 is connected with the water inlet of the air floatation machine 5 through a pipeline, the water outlet of the air floatation machine 5 is connected with the water inlet of the aerobic tank 6 through a pipeline, and the water outlet of the aerobic tank 6 is connected with the water inlet of the secondary sedimentation tank 7 through a pipeline.
Preferably, the concentrated water adjusting tank 1 is provided with an aeration device for stirring periodically to prevent sludge sedimentation.
Preferably, the demulsification oil separation tank 2 is connected with an acid adding device.
Preferably, the fresh water adjusting tank 3 is provided with an aeration device for stirring periodically to prevent sludge sedimentation.
Preferably, the reaction zone 4-1 of the coagulation tank 4 is connected with a dosing device.
Preferably, the dosing devices include an alkali dosing device, a calcium chloride dosing device, a PAC dosing device, and a PAM dosing device.
Preferably, the sedimentation zone 4-2 of the coagulation basin 4 is provided with an inclined pipe to improve sedimentation efficiency.
Preferably, a sludge discharge pipe is arranged at the bottom of the sedimentation zone 4-2 of the coagulation tank 4 and is connected with the sludge concentration tank.
Preferably, the front end of the air floatation machine 5 is connected with the calcium chloride dosing device, the PAC dosing device and the PAM dosing device.
Preferably, the aerobic tank 6 is provided with a microorganism strengthening device 8, a feed inlet, a discharge outlet and a liquid feeding opening, wherein the feed inlet is connected with the middle section of the aerobic tank 6 through a pump, the discharge outlet is connected with the front section of the aerobic tank 6, and the liquid feeding opening is connected with a culture solution storage tank through a pump; the microorganism strengthening device periodically extracts activated sludge from the middle section of the aerobic tank through the feeding hole to rejuvenate strains, and discharges the rejuvenated activated sludge into the front section of the aerobic tank through the discharging hole, so that the strengthening function of aerobic microorganisms is realized.
Preferably, the secondary sedimentation tank 7 is connected with the sludge concentration tank through a sludge pump.
Preferably, the aluminum product production wastewater treatment system further comprises a sludge dewatering device, and the sludge dewatering device is a plate-and-frame filter press.
Preferably, the aluminum product production wastewater treatment system further comprises an anaerobic tank, and the anaerobic tank is positioned at the front end of the aerobic tank.
The treatment process of the aluminum product production wastewater treatment system comprises the following steps:
s1, enabling concentrated water in an aluminum product production workshop to enter a concentrated water adjusting tank, enabling the hydraulic retention time of the concentrated water adjusting tank to be 24 hours, and stirring by using an aeration device to homogenize the water quality;
s2, discharging the wastewater homogenized by the concentrated water adjusting tank into a demulsification oil separation tank through a pump, wherein the hydraulic retention time of the demulsification oil separation tank is 10min, the pH value is adjusted to be 2 by an acid adding device, scum generated after demulsification is completed is scraped out by a scum scraper and enters a sludge concentration tank, and the wastewater automatically flows into a fresh water adjusting tank;
s3, mixing the wastewater which flows into the fresh water regulating reservoir automatically after being treated by the demulsification oil separation reservoir with wastewater of other aluminum product production workshops in the fresh water regulating reservoir, wherein the hydraulic retention time of the fresh water regulating reservoir is 24 hours, and an aeration device is arranged at the bottom of the fresh water regulating reservoir and used for balancing the water quality and the water quantity;
s4, pumping the wastewater homogenized by the fresh water adjusting tank to a reaction zone of the coagulation tank, wherein the reaction time of the reaction zone is not less than 10min, and the surface load of the precipitation zone is 0.8m3/(m2H), precipitating for 3h, adjusting the pH of the wastewater to 9 in a reaction zone, adding calcium chloride, PAC (polyaluminium chloride) and PAM (polyacrylamide) agents to flocculate and precipitate suspended matters and fluorine ions in the wastewater, feeding supernatant into an air flotation machine, and discharging sludge in the precipitation zone into a sludge concentration tank;
s5, carrying out secondary reaction on the supernatant entering the air flotation machine and calcium chloride, PAC (polyaluminium chloride) and PAM (polyacrylamide) at the front end of the air flotation machine to further remove fluorides in water, enabling generated scum to enter a sludge concentration tank, and enabling water discharged from the air flotation machine to enter an aerobic tank;
s6, the volume load of the aerobic tank is 0.4-0.6 kgCOD/(m)3D) the sludge concentration is 4000mg/L, and the dissolved oxygen at the tail end of the aerobic tank is controlledThe sludge is prepared to be 3.5-4mg/L, the aerobic tank is provided with a microorganism strengthening device, the operation is carried out once a day, the operation time is 20 hours, sludge is extracted from the middle section of the aerobic tank and enters the microorganism strengthening device for strain rejuvenation, the rejuvenated strains are discharged to the front end of the aerobic tank, 3kg of activated carbon powder is periodically added into the aerobic tank every day, organic matters in water are adsorbed by utilizing the adsorption effect of the activated carbon, and meanwhile, a carrier is provided for the strains by utilizing the characteristic of high specific surface area of the activated carbon, so that the sludge concentration is improved;
s7, discharging the effluent of the aerobic tank out of the secondary sedimentation tank, wherein the surface load is 0.6m3/(m2H), the settling time is 2h, the sludge reflux ratio is 50-100%, after gravity settling, supernatant reaches the standard and is discharged, a part of sludge at the bottom of the pool reflows to the front end of the aerobic pool for supplementing strains, and the rest sludge enters a sludge concentration pool;
s8, after gravity concentration of sludge in the sludge concentration tank, supernatant enters a fresh water adjusting tank, and the sludge is dewatered and transported outside.
According to the actual waste water requirement, the front end of the aerobic tank can be provided with an anaerobic unit.
The utility model realizes the discharge of the first-level A standard of the wastewater generated in the aluminum product production, separately collects the concentrated water of the high-concentration workshop containing the emulsion and other wastewater, adopts the independent pretreatment process, reduces the equipment investment, improves the pretreatment effect and reduces the operation cost; a pretreatment process combining coagulation and air floatation is selected, and fluoride is removed in two steps, so that the total removal rate of the fluoride is improved; the microbial strengthening device is utilized to expand and cultivate the dominant strains on a large scale, so that the number of the dominant strains in the aerobic tank is maintained at 1.0 multiplied by 109Above CFU/mL, the capability of the microorganism for decomposing organic matters is improved, and meanwhile, the proliferation of other microorganisms such as filamentous bacteria and actinomycetes can be controlled, and the sludge bulking and the formation of biological foams are inhibited.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A treatment system for aluminum product production wastewater is characterized by comprising a concentrated water adjusting tank, a demulsification oil separation tank, a fresh water adjusting tank, a coagulation tank, an air flotation machine, an aerobic tank and a secondary sedimentation tank;
the water outlet of the concentrated water adjusting tank is connected with the water inlet of the demulsification oil separation tank through a pump, the water outlet of the demulsification oil separation tank is connected with the water inlet of the fresh water adjusting tank through a pipeline, the water outlet of the fresh water adjusting tank is connected with the water inlet of the coagulating sedimentation tank through a pump, the water outlet of the coagulating sedimentation tank is connected with the water inlet of the air flotation machine through a pipeline, the water outlet of the air flotation machine is connected with the water inlet of the aerobic tank through a pipeline, and the water outlet of the aerobic tank is connected with the inlet port of the secondary sedimentation tank through a pipeline.
2. The aluminum product production wastewater treatment system of claim 1, wherein the demulsification oil separation tank is connected with an acid adding device.
3. The aluminum product production wastewater treatment system of claim 1, wherein the reaction zone of the coagulation tank is connected with a dosing device.
4. The aluminum product production wastewater treatment system of claim 3, wherein the dosing device comprises an alkali dosing device, a calcium chloride dosing device, a PAC dosing device, and a PAM dosing device.
5. The aluminum product production wastewater treatment system of claim 1, wherein the sedimentation zone of the coagulation basin is provided with an inclined tube.
6. The aluminum product production wastewater treatment system of claim 4, wherein the front end of the air flotation machine is connected with the calcium chloride dosing device, the PAC dosing device and the PAM dosing device.
7. The aluminum product production wastewater treatment system according to claim 1, wherein the aerobic tank is provided with a microorganism enhancement device, the microorganism enhancement device is provided with a feed inlet, a discharge outlet and a liquid feeding port, the feed inlet is connected with the middle section of the aerobic tank through a pump, the discharge outlet is connected with the front section of the aerobic tank, and the liquid feeding port is connected with the culture solution storage tank through a pump.
8. The aluminum product production wastewater treatment system according to claim 1, wherein the concentrated water adjusting tank and the fresh water adjusting tank are provided with aeration devices.
9. The aluminum product production wastewater treatment system of claim 1, further comprising a sludge dewatering device, wherein the sludge dewatering device is a plate and frame filter press.
10. The aluminum product production wastewater treatment system of claim 1, further comprising an anaerobic tank located at a front end of the aerobic tank.
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| CN202022027781.7U CN212559892U (en) | 2020-09-15 | 2020-09-15 | Aluminum product waste water treatment system |
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| CN202022027781.7U CN212559892U (en) | 2020-09-15 | 2020-09-15 | Aluminum product waste water treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892257A (en) * | 2020-09-15 | 2020-11-06 | 青岛世宇环境工程有限公司 | Aluminum product production wastewater treatment system and treatment process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892257A (en) * | 2020-09-15 | 2020-11-06 | 青岛世宇环境工程有限公司 | Aluminum product production wastewater treatment system and treatment process thereof |
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