CN211999335U - Integrated treatment device for waste water in acid pickling and phosphorization production - Google Patents
Integrated treatment device for waste water in acid pickling and phosphorization production Download PDFInfo
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- CN211999335U CN211999335U CN202020127754.4U CN202020127754U CN211999335U CN 211999335 U CN211999335 U CN 211999335U CN 202020127754 U CN202020127754 U CN 202020127754U CN 211999335 U CN211999335 U CN 211999335U
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Abstract
The utility model discloses an integrated processing apparatus of pickling bonderizing waste water, including grid, equalizing basin, the integrated processing apparatus of fenton oxidation, in with thoughtlessly congeal integrated processing apparatus, the integrated processing apparatus of denitrogenation and the biochemical integrated processing apparatus of AO hydrolyze, grid, equalizing basin, the integrated processing apparatus of fenton oxidation, in with thoughtlessly congeal integrated processing apparatus, the integrated processing apparatus of denitrogenation, the biochemical integrated processing apparatus of AO link gradually. The utility model discloses impact load resistance is strong, treatment effeciency is high, investment cost is low, the working costs is low.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to pickling bonderizing production wastewater treatment's integrated device.
Background
The phosphorization treatment is a chemical reprocessing process for the surfaces of metal materials and parts thereof. The surface of metal material and its product after phosphorization treatment forms an immersed phosphate film layer, and said film layer and metal base body have good binding capacity, wear resistance and adhesion capacity to coating material, so that the phosphorization treatment technology can be adopted in the industries of machinery and steel, etc. to make protective layer of mechanical component. The phosphating treatment process generally comprises the steps of alkali washing for removing oil, hot water rinsing, cold water rinsing, acid washing for removing rust, secondary cold water rinsing, phosphating and the like.
The phosphorization production wastewater mainly contains phosphate, nitrate, zinc, iron, nickel and the like, part of wastewater can also contain pollutants such as fluorinion, surfactant and the like according to different production processes, the components are complex, the toxicity is high, the treatment difficulty is high, and the current mainstream process in the phosphorization wastewater engineering practice is as follows: coagulation air flotation, chemical precipitation, sand filtration, activated carbon adsorption, anaerobic and aerobic biochemical treatment and the like.
In contrast, the following patent documents mainly exist at home and abroad: patent publication No.: CN104671493A discloses a neutralization treatment process for acid-washing phosphatization wastewater, which consists of a mixed reaction tank, a sedimentation tank, a mechanical dehydration or sludge drying field and a detection device. The beneficial effects of the utility model are that, the mixed reaction pond mixes waste water and neutralizer, carries out abundant reaction. Insoluble substances after reaction are precipitated in a precipitation tank. The precipitated sludge is subjected to mechanical dehydration or sludge drying. And (4) after the treated water is detected by the detection device to reach the discharge standard, discharging or retreating. However, the treatment method of the patent is too simple, only the neutralization treatment is carried out on the acid pickling phosphorization wastewater through a neutralizing agent, and the treatment effect is not obvious.
Patent publication No.: CN 105174661A discloses an acid pickling phosphating wastewater treatment process, which comprises the following main processes: grid, homogenizing, coagulating, hydrolyzing, anaerobic, aerobic and air floating. The beneficial effects of the utility model are that, can carry out effectual regulation to the pH of quality of water, can get rid of the suspended solid etc. in the waste water through the technology of coagulating, the anaerobism adds the part phosphate and the organic matter that aerobic biochemical technology can get rid of in the waste water simultaneously. However, the removal capability of the wastewater containing more complex components, such as surfactant and fluoride, higher content of phosphate and nitrate, and metal ions of zinc, iron, nickel and other pollutants is limited, and besides, in practical engineering application, if more process settings are constructed by adopting a civil engineering mode, the cost is higher, and the problems of inconvenient operation and maintenance exist.
At present, an integrated device for treating waste water in acid pickling and phosphorization production with high treatment efficiency is lacked.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects of the prior art, the technical purpose of the utility model is to provide an integrated device that pickling phosphorization production wastewater handles that treatment effeciency is high.
In order to achieve the technical purpose, the utility model provides a following technical scheme: an integrated treatment device for waste water in acid pickling and phosphorization production, which comprises a grid, a regulating tank, a Fenton oxidation integrated treatment device, a neutralization and coagulation integrated treatment device, a hydrolysis and denitrification integrated treatment device and an A/O biochemical integrated treatment device;
the grating, the adjusting tank, the Fenton oxidation integrated treatment device, the neutralization and coagulation integrated treatment device, the hydrolysis and denitrification integrated treatment device and the A/O biochemical integrated treatment device are sequentially connected;
the adjusting tank and the Fenton oxidation integrated processing device are provided with a water inlet pump therebetween, the first sedimentation tank is connected with the neutralization tank, the second sedimentation tank is connected with the hydrolysis reaction tank, the hydrolysis reaction tank is connected with the anoxic tank, a first sludge inlet pump is arranged between the first sludge tank and the second sludge tank, a sludge reflux pump is arranged between the third sedimentation tank and the hydrolysis reaction tank, and a sludge discharge pipe is arranged between the third sedimentation tank and the second sludge tank.
Further, integrated processing apparatus of fenton oxidation include first fenton oxidation reaction pond, second fenton oxidation reaction pond, first sludge impoundment, first sedimentation tank and fenton reagent charge device, first fenton oxidation reaction pond and second fenton oxidation reaction pond in all be provided with agitating unit, fenton reagent and lime charge device be provided with corresponding medicine dissolving device and charge device, first sedimentation tank in set up first have the pipe chute to pack.
Further, the neutralization and coagulation integrated treatment device comprises a neutralization tank, a coagulation tank, a flocculation tank, a second sludge tank, a second sedimentation tank, a second sludge inlet pump, a neutralization and coagulation dosing device and sludge dewatering equipment, wherein stirring devices are arranged in the neutralization tank, the coagulation tank and the flocculation tank, a second inclined tube filler is arranged in the second sedimentation tank, and a matched medicine dissolving system and dosing device required for neutralization, coagulation, flocculation and sludge dewatering are arranged in the neutralization and coagulation integrated treatment device.
Furthermore, a first enzyme floating filler is vertically arranged in the hydrolysis reaction tank, and a submersible stirrer is arranged at the bottom of the hydrolysis reaction tank.
Further, the biochemical integrated treatment device of AO include oxygen deficiency pond, good oxygen pond, third sedimentation tank and sand filter, the oxygen deficiency pond in the perpendicular installation second enzyme floats filler, the bottom of good oxygen pond be provided with third enzyme and float filler and aerator, the sand filter inside be provided with quartz sand filter material, good oxygen pond and oxygen deficiency pond between be provided with the nitrifying liquid back flow, the third sedimentation tank in be provided with third pipe chute filler, sedimentation tank to hydrolysis reaction tank between be provided with the mud backwash pump, sedimentation tank to oxygen deficiency pond between be provided with the mud back flow, sedimentation tank to second sludge impoundment between be provided with the mud pipe of arranging.
The utility model has the advantages that:
the utility model discloses because above-mentioned structural design, treatment effeciency is high, investment cost is low, the working costs is low, operation and operation maintenance are very convenient.
The utility model has the advantages of it is following:
(1) aiming at the acidic phosphating production wastewater which is difficult to treat, different characteristic pollutants adopt different treatment processes, the pertinence is strong, the treatment efficiency is higher, and compared with the conventional combined treatment process, the combined treatment process has the advantages of wide application range, strong impact load resistance and better operation effect.
(2) The Fenton oxidation process is used as a front-end pretreatment process, so that the biodegradability of the wastewater can be improved, the subsequent biochemical treatment is guaranteed, and a better treatment effect can be achieved for the wastewater which is difficult to treat.
(3) An independent hydrolysis unit is arranged at the front end of the A/O biochemical process, so that a good removal effect can be achieved for wastewater with high nitrate content, and the denitrification efficiency of the system is very high.
(4) All main processes including the sludge treatment system are integrated in the integrated equipment, and all the integrated equipment is provided with an automatic control mode and a manual mode, so that the automation degree is high, and the operation and maintenance are very simple and convenient.
(5) Except that the regulating tank needs civil engineering, the rest is complete equipment, the field installation is rapid, the occupied area, the civil engineering investment, the installation cost and the operation cost are greatly saved, and the total investment cost is lower.
Drawings
Figure 1 shows a process flow diagram of the present invention;
fig. 2 shows a schematic view of the structure of the device of the present invention;
wherein: 1 grid, 2 regulating tank, 3 Fenton oxidation integrated treatment device, 4 neutralization coagulation integrated treatment device, 5 hydrolysis denitrification integrated treatment device, 6A/O biochemical integrated treatment device, 7 water inlet pump, 8 first Fenton oxidation reaction tank, 9 first sludge tank, 10 first sedimentation tank, 11 second Fenton oxidation reaction tank, 12 Fenton reagent dosing device, 13 first sludge inlet pump, 14 neutralization tank, 15 coagulation tank, 16 flocculation tank, 17 second sludge tank, 18 second sedimentation tank, 19 second sludge inlet pump, 20 neutralization coagulation dosing device, 21 sludge dewatering equipment, 22 hydrolysis reaction tank, 23 first enzyme floating filler, 24 mixer, 25 anoxic tank, 26 second enzyme floating filler, 27 aerobic tank, 28 third enzyme floating filler, 29 third sedimentation tank, 30 sand filter, 31 clean water tank, 32 sludge delivery pump.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Example 1
As shown in the figures 1 and 2, the integrated treatment device for waste water in acid pickling and phosphorization production of the utility model comprises a grating 1, an adjusting tank 2, a Fenton oxidation integrated treatment device 3, a neutralization coagulation integrated treatment device 4, a hydrolysis denitrification integrated treatment device 5 and an A/O biochemical integrated treatment device 6, wherein the grating 1, the adjusting tank 2, the Fenton oxidation integrated treatment device 3, the neutralization coagulation integrated treatment device 4, the hydrolysis denitrification integrated treatment device 5 and the A/O biochemical integrated treatment device 6 are sequentially connected, a water inlet pump 7 is arranged between the adjusting tank 2 and the Fenton oxidation integrated treatment device 3, the first settling tank 10 is connected with a neutralization tank 14, the second settling tank 18 is connected with a hydrolysis reaction tank 22, the hydrolysis reaction tank 22 is connected with an anoxic tank 25, a first sludge inlet pump 13 is arranged between the first settling tank 9 and the second sludge tank, a sludge delivery flow pump 32 is arranged between the third sedimentation tank 29 and the hydrolysis reaction tank 22, and a sludge discharge pipe is arranged between the third sedimentation tank 29 and the second sludge tank 17.
Fenton oxidation integrated processing apparatus 3 include first Fenton oxidation reaction pond 8, second Fenton oxidation reaction pond 11, first sludge impoundment 9, first sedimentation tank 10 and Fenton reagent charge device 12, first Fenton oxidation reaction pond 8 and second Fenton oxidation reaction pond 11 in all be provided with agitating unit, Fenton oxidation reagent and lime charge device 12 be provided with corresponding medicine dissolving device and charge device, first sedimentation tank 10 in be provided with first pipe chute and pack.
The neutralization and coagulation integrated treatment device 4 comprises a neutralization tank 14, a coagulation tank 15, a flocculation tank 16, a second sludge tank 17, a second sedimentation tank 18, a second sludge inlet pump 19, a neutralization and coagulation dosing device 20 and sludge dewatering equipment 21, wherein stirring devices are arranged in the neutralization tank 14, the coagulation tank 15 and the flocculation tank 16, second inclined tube filling materials are arranged in the second sedimentation tank 18, a matched medicine dissolving device and a medicine adding device required for neutralization, coagulation and flocculation are arranged in the neutralization and coagulation dosing device 20, the neutralization and coagulation integrated treatment device 4 is internally provided with the sludge dewatering equipment 21, the sludge dewatering equipment 21 is provided with the matched medicine dissolving and dosing device, and the second sludge inlet pump 19 is arranged between the second sludge tank 17 and the dewatering equipment 21.
The hydrolysis reaction tank 22 is vertically provided with a first enzyme floating filler 23, and the hydrolysis reaction tank 22 is internally provided with a submersible stirrer 24.
The A/O biochemical integrated treatment device comprises an anoxic tank 25, an aerobic tank 27, a third sedimentation tank 29 and a sand filter tank 30, wherein a second enzyme floating filler 26 is vertically installed in the anoxic tank 25, a third enzyme floating filler 28 and an aerator are arranged at the bottom of the aerobic tank 27, a quartz sand filter material is arranged in the sand filter tank 30, a nitrifying liquid return pipe is arranged between the aerobic tank 27 and the anoxic tank 25, a sludge return pipe is arranged between the sedimentation tank 29 and the anoxic tank 25, a sludge delivery pump 32 is arranged between the sedimentation tank and the hydrolysis denitrification integrated device 5 and the second sludge tank 17, and a third inclined pipe filler is arranged in the third sedimentation tank 29.
The treatment process of the integrated treatment device for the pickling and phosphating production wastewater comprises the following steps:
(1) acid pickling and phosphating production wastewater from a workshop enters an adjusting tank 2 after passing through a grating 1, then enters a Fenton oxidation integrated treatment device 3 through a water inlet pump 7, and then FeSO is sequentially added into a first Fenton oxidation reaction tank 84、H2O2Reacting, and sequentially adding NaOH and Ca (OH) into a second Fenton oxidation reaction tank 112PAM reacts, and the suspended solid separates in first sedimentation tank 10, is provided with first pipe chute filler in the first sedimentation tank 10, and the supernatant gets into neutralization coagulation integrated processing apparatus 4 after fenton oxidation treatment. The Fenton oxidation reagent, the lime and the PAM are sequentially put into the first Fenton oxidation reaction tank and the second Fenton oxidation reaction tank in sequence, so that organic matters and the surfactant LAS can be removed, and meanwhile, fluoride ions, zinc, iron, nickel and metal ions can be removed, the Fenton oxidation reagent, the lime and the PAM are sequentially put into the first Fenton oxidation reaction tank and the second Fenton oxidation reaction tank, the organic matters and the surfactant LAS can be removedThe Fenton oxidation reagent is FeSO4。
(2) After the wastewater enters the neutralization coagulation integrated treatment device 4, the pH value of the inlet water is properly adjusted to 7-8 mainly by adding sulfuric acid or hydrochloric acid, then PAC and PAM are added for coagulation reaction to remove phosphate and SS, suspended matters are separated in a second sedimentation tank, a second inclined tube filler is arranged in the second sedimentation tank 18, and the supernatant enters the hydrolysis denitrification integrated treatment device 5.
(3) The wastewater enters from the upper part of the hydrolysis denitrification integrated treatment device 5, DO in the hydrolysis reaction tank is controlled below 0.5mg/L under the action of the submersible stirring device, a first enzyme floating filler 23 is vertically arranged in the hydrolysis reaction tank, the average sludge concentration in the hydrolysis reaction tank can be increased by 4g/L, denitrification is carried out through the denitrification of microorganisms, nitrate in the wastewater is removed, and the treated wastewater enters the A/O biochemical integrated treatment device 6.
(4) The effluent of the hydrolysis denitrification integrated treatment device 5 enters an A/O biochemical integrated treatment device 6, firstly enters an anoxic tank 25, is mixed with the reflux nitrification liquid of an aerobic tank 27, and is subjected to denitrification reaction to further remove nitrate nitrogen; then enters an aerobic tank 27 for nitration reaction to remove ammonia nitrogen and organic matters; finally, the effluent enters a third sedimentation tank 29, the precipitated effluent enters a sand filter 30, and the effluent after sand filtration directly enters a clean water tank; wherein the dissolved oxygen of the aerobic tank 27 is controlled to be between 2 and 4mg/L, the reflux ratio of the nitrifying liquid is controlled to be between 200 and 400 percent, a second enzyme floating filler 26 and a third enzyme floating filler 28 are respectively and vertically arranged in the anoxic tank 25 and the aerobic tank 27, a biological film is attached to the surfaces of the fillers, the sludge concentration of the system can be effectively increased, the yield of residual sludge can be reduced, and a third inclined tube filler is arranged in the third sedimentation tank 29.
(5) Sludge in the Fenton oxidation integrated treatment device 3 is conveyed to a sludge tank in the neutralization coagulation integrated treatment device 4 through a sludge pump, sludge in the A/O biochemical integrated treatment device 6 can be conveyed to the sludge tank in the neutralization coagulation integrated treatment device, sludge in the neutralization coagulation integrated treatment device 4 is conveyed to sludge dewatering equipment through the sludge pump for dewatering treatment, and the sludge is transported outside after being treated.
Example 2
Example 2 differs from example 1 in that:
the treatment process of the integrated treatment device for the acid pickling and phosphating production wastewater comprises the following steps:
in the step (1), the Fenton oxidation reagent is H2O2、FeSO4。
In the step (2), H is added after the wastewater enters the neutralization coagulation integrated treatment device2SO4Or HCl properly adjusts the pH of the inlet water to about 8.
In the step (3), the average sludge concentration in the hydrolysis reaction tank can be increased by 2 g/L.
In the step (4), the dissolved oxygen of the anoxic pond 26 is controlled below 0.5mg/L, and the sludge reflux ratio is controlled between 50 and 200 percent.
Example 3
Example 3 differs from example 1 in that:
the treatment process of the integrated treatment device for the acid pickling and phosphating production wastewater comprises the following steps:
in the step (1), the Fenton oxidation reagent is NaOH, Ca (OH)2、PAM。
In the step (2), after the wastewater enters a neutralization coagulation integrated treatment device, adding PAC and PAM to remove phosphate and SS;
in the step (3), the dissolved oxygen in the hydrolysis reaction tank is controlled to be 0.5mg/L or less.
In the step (4), the dissolved oxygen of the aerobic tank 27 is controlled to be between 2 and 4mg/L, and the reflux ratio of the nitrifying liquid is controlled to be between 200 and 400 percent.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides an integrated processing apparatus of pickling bonderizing industrial waste water which characterized in that: the acid pickling phosphating production wastewater treatment device comprises a grid, an adjusting tank, a Fenton oxidation integrated treatment device, a neutralization coagulation integrated treatment device, a hydrolysis denitrification integrated treatment device and an A/O biochemical integrated treatment device;
the grating, the adjusting tank, the Fenton oxidation integrated treatment device, the neutralization and coagulation integrated treatment device, the hydrolysis and denitrification integrated treatment device and the A/O biochemical integrated treatment device are sequentially connected;
the adjusting tank and the Fenton oxidation integrated processing device are provided with a water inlet pump therebetween, the first sedimentation tank is connected with the neutralization tank, the second sedimentation tank is connected with the hydrolysis reaction tank, the hydrolysis reaction tank is connected with the anoxic tank, a first sludge inlet pump is arranged between the first sludge tank and the second sludge tank, a sludge reflux pump is arranged between the third sedimentation tank and the hydrolysis reaction tank, and a sludge discharge pipe is arranged between the third sedimentation tank and the second sludge tank.
2. The integrated treatment device for the acid pickling and phosphorizing production wastewater according to claim 1, characterized in that: fenton oxidation integrated processing apparatus include first Fenton oxidation reaction pond, second Fenton oxidation reaction pond, first sludge impoundment, first sedimentation tank and Fenton reagent charge device, first Fenton oxidation reaction pond and second Fenton oxidation reaction pond in all be provided with agitating unit, Fenton reagent and lime charge device be provided with corresponding medicine dissolving device and charge device, first sedimentation tank in set up first have the pipe chute to pack.
3. The integrated treatment device for the acid pickling and phosphorizing production wastewater according to claim 1, characterized in that: the neutralization and coagulation integrated treatment device comprises a neutralization tank, a coagulation tank, a flocculation tank, a second sludge tank, a second sedimentation tank, a second sludge inlet pump, a neutralization and coagulation dosing device and sludge dewatering equipment, wherein stirring devices are arranged in the neutralization tank, the coagulation tank and the flocculation tank, a second inclined tube filler is arranged in the second sedimentation tank, and a medicine dissolving system and a dosing device which are required by neutralization, coagulation, flocculation and sludge dewatering and matched with each other are arranged in the neutralization and coagulation integrated treatment device.
4. The integrated treatment device for the acid pickling and phosphorizing production wastewater according to claim 1, characterized in that: the hydrolysis reaction tank is vertically provided with a first enzyme floating filler, and the bottom of the hydrolysis reaction tank is provided with a submersible stirrer.
5. The integrated treatment device for the acid pickling and phosphorizing production wastewater according to claim 1, characterized in that: the A/O biochemical integrated treatment device comprises an anoxic tank, an aerobic tank, a third sedimentation tank and a sand filter tank, wherein second enzyme floating filler is vertically arranged in the anoxic tank, the bottom of the aerobic tank is provided with third enzyme floating filler and an aerator, quartz sand filter materials are arranged in the sand filter tank, a nitrifying liquid return pipe is arranged between the aerobic tank and the anoxic tank, third inclined pipe filler is arranged in the third sedimentation tank, a sludge return pump is arranged between the sedimentation tank and the hydrolysis reaction tank, a sludge return pipe is arranged between the sedimentation tank and the anoxic tank, and a sludge discharge pipe is arranged between the sedimentation tank and the second sludge tank.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111153557A (en) * | 2020-01-20 | 2020-05-15 | 上海泓济环保科技股份有限公司 | Integrated treatment device and treatment process for pickling and phosphating production wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111153557A (en) * | 2020-01-20 | 2020-05-15 | 上海泓济环保科技股份有限公司 | Integrated treatment device and treatment process for pickling and phosphating production wastewater |
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