CN111925020A - Reaction system and method for efficiently treating printing and dyeing wastewater - Google Patents
Reaction system and method for efficiently treating printing and dyeing wastewater Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 116
- 238000004043 dyeing Methods 0.000 title claims abstract description 92
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 97
- 230000003647 oxidation Effects 0.000 claims abstract description 79
- 239000010802 sludge Substances 0.000 claims abstract description 50
- 239000002253 acid Substances 0.000 claims abstract description 45
- 239000003513 alkali Substances 0.000 claims abstract description 38
- 238000010669 acid-base reaction Methods 0.000 claims abstract description 29
- 239000002585 base Substances 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 230000001276 controlling effect Effects 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 83
- 238000005374 membrane filtration Methods 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 13
- 230000001590 oxidative effect Effects 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 239000000975 dye Substances 0.000 description 7
- 238000004065 wastewater treatment Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 239000001301 oxygen Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
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- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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Abstract
The system comprises a Fenton oxidation tower, a printing and dyeing wastewater inlet pump, a post-reaction wastewater discharge pump and an acid-base reaction condition regulation and control device, wherein the Fenton oxidation tower is provided with a printing and dyeing wastewater inlet, a post-reaction wastewater outlet, a sludge outlet and an acid-base solution inlet, the printing and dyeing wastewater inlet is connected with the printing and dyeing wastewater inlet pump, the post-reaction wastewater outlet is connected with the post-reaction wastewater discharge pump, the sludge outlet is used for discharging sludge after the Fenton oxidation reaction, and the acid-base reaction condition regulation and control device is connected with the acid-base solution inlet and is used for regulating and controlling the acid-base reaction condition of the Fenton oxidation reaction in real time by adding acid solution or alkali solution into the Fenton oxidation tower. The system can efficiently reduce the COD in the printing and dyeing wastewater, is favorable for shortening the treatment time of the printing and dyeing wastewater, has high automation degree and simple and convenient operation, reduces the cost for treating the COD in the printing and dyeing wastewater, and has wide application prospect and good economic benefit.
Description
Technical Field
The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a reaction system and a method for efficiently treating printing and dyeing wastewater.
Background
The pollution of printing and dyeing wastewater is one of the main sources of water pollution, and brings serious harm to human health and ecological environment.
Advanced oxidation technologies (AOPs) are a general term for a series of reaction Processes based on radical high oxidation potential oxidation of refractory organic pollutants, and are considered as the most promising new water treatment technologies. The Fenton oxidation technology is a typical advanced oxidation technology and can effectively degrade various pollutants such as dyes, benzene rings, phenols, medicines, pesticides and the like.
At present, the reactor that can handle COD is diversified, but COD is too high in the printing and dyeing waste water, and the clearance of current reactor to COD in the printing and dyeing waste water has been difficult to obtain effectively promoting.
The above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.
Disclosure of Invention
The main purpose of the present invention is to overcome the above mentioned drawbacks of the prior art and to provide a reaction system and method for efficiently treating printing and dyeing wastewater, which can efficiently reduce the COD of the printing and dyeing wastewater.
In order to achieve the purpose, the invention adopts the following technical scheme:
the reaction system for efficiently treating the printing and dyeing wastewater comprises a Fenton oxidation tower, a printing and dyeing wastewater inlet pump, a post-reaction wastewater discharge pump and an acid-base reaction condition regulation and control device, wherein the Fenton oxidation tower is provided with a printing and dyeing wastewater inlet, a post-reaction wastewater outlet, a sludge outlet and an acid-base solution inlet, the printing and dyeing wastewater inlet is connected with the printing and dyeing wastewater inlet pump, the post-reaction wastewater outlet is connected with the post-reaction wastewater discharge pump, the sludge outlet is used for discharging sludge after the Fenton oxidation reaction, and the acid-base reaction condition regulation and control device is connected with the acid-base solution inlet and is used for regulating and controlling the acid-base reaction conditions of the Fenton oxidation reaction in real time by adding acid solution or alkali solution into the Fenton oxidation.
Further:
the device also comprises a sedimentation tank, and the reacted wastewater outlet is connected to the sedimentation tank through the reacted wastewater draining pump.
The Fenton oxidation tower is a four-opening packed tower, the acid-alkali liquid inlet is arranged on one side of the top of the four-opening packed tower, the printing and dyeing wastewater inlet is arranged on one side of the upper part of the four-opening packed tower, and the reacted wastewater outlet and the sludge outlet are respectively arranged on two sides of the bottom of the four-opening packed tower.
The acid-base reaction condition regulation and control device comprises an acid liquid tank, a base liquid tank, an acid liquid pipeline and a base liquid pipeline, wherein the acid liquid tank is used for storing acid liquid, the base liquid tank is used for storing base liquid, the acid liquid tank and the base liquid tank are respectively connected with the acid liquid pipeline and the base liquid pipeline, the acid liquid pipeline and the base liquid pipeline are connected to the acid-base liquid inlet, and valves used for controlling the opening and closing of the acid liquid pipeline and the base liquid pipeline are respectively arranged on the acid liquid pipeline and the base liquid pipeline.
The pH value detector is used for monitoring the pH value of the reaction environment in the Fenton oxidation tower in real time.
The control unit correspondingly controls the opening and closing of the valves of the acid liquid pipeline and the alkali liquid pipeline in real time according to the pH value of the reaction environment in the Fenton oxidation tower monitored by the pH value detector in real time, and releases a proper amount of acid liquid or alkali liquid into the Fenton oxidation tower so as to control the reaction environment in the Fenton oxidation tower to be in a preset acid-base reaction condition.
And sludge is filled in the Fenton oxidation tower as a filler.
The Fenton oxidation tower is internally provided with a plurality of layers of tower plates, the exterior of the Fenton oxidation tower is provided with a jacket, and the jacket is used for introducing a heat-conducting medium to control the temperature of the Fenton oxidation reaction.
The printing and dyeing wastewater outlet is an automatic telescopic outlet of membrane filtration, so that sludge blockage can be effectively prevented, and the printing and dyeing wastewater outlet rate can be regulated and controlled.
The reaction method for efficiently treating the printing and dyeing wastewater uses the reaction system for efficiently treating the printing and dyeing wastewater to treat the printing and dyeing wastewater, and preferably, the Fenton oxidation reaction condition in the Fenton oxidation tower is controlled to be the weak acid-base reaction condition in real time by the acid-base reaction condition regulating and controlling device.
The invention has the following beneficial effects:
the reaction system for efficiently treating the printing and dyeing wastewater comprises a Fenton oxidation tower and an acid-base reaction condition regulating device, wherein the acid-base reaction condition regulating device is connected with the acid-base liquid inlet of the Fenton oxidation tower, and acid liquid or base liquid is added into the Fenton oxidation tower to regulate the acid-base reaction condition of the Fenton oxidation reaction in real time, so that the optimal control of the acid-base reaction condition during the Fenton oxidation reaction can be realized, and the removal rate of COD (chemical oxygen demand) of the printing and dyeing wastewater is effectively improved. The system can efficiently reduce the COD in the printing and dyeing wastewater, is favorable for shortening the treatment time of the printing and dyeing wastewater, has high automation degree and simple and convenient operation, reduces the cost for treating the COD in the printing and dyeing wastewater, and has wide application prospect and good economic benefit.
Drawings
FIG. 1 is a schematic structural diagram of a reaction system for efficiently treating printing and dyeing wastewater according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a fenton oxidation tower according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either a fixed or coupled or communicating function.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and 2, an embodiment of the present invention provides a reaction system for efficiently treating printing and dyeing wastewater, including a fenton oxidation tower 3, a printing and dyeing wastewater inlet pump, a post-reaction wastewater discharge pump, and an acid-base reaction condition regulation and control device, where the fenton oxidation tower 3 has a printing and dyeing wastewater inlet 8, a post-reaction wastewater outlet 10, a sludge outlet 9, and an acid-base solution inlet, the printing and dyeing wastewater inlet 8 is connected to the printing and dyeing wastewater inlet pump, the post-reaction wastewater outlet 10 is connected to the post-reaction wastewater discharge pump, the sludge outlet 9 is used for discharging sludge after fenton oxidation reaction, and the acid-base reaction condition regulation and control device is connected to the acid-base solution inlet and is used for regulating and controlling acid-base reaction conditions of fenton oxidation reaction in real time by adding acid solution or alkali solution to the fenton oxidation tower.
In a preferred embodiment, the acid-base reaction condition regulating device includes an acid liquid tank, an alkali liquid tank, an acid liquid pipeline 6 and an alkali liquid pipeline 7, the acid liquid tank is used for storing acid liquid, the alkali liquid tank is used for storing alkali liquid, the acid liquid tank and the alkali liquid tank are respectively connected to the acid liquid pipeline 6 and the alkali liquid pipeline 7, the acid liquid pipeline 6 and the alkali liquid pipeline 7 are connected to the acid-base liquid inlet, and the acid liquid pipeline 6 and the alkali liquid pipeline 7 are respectively provided with valves k1 and k2 for controlling opening and closing of the acid liquid pipeline 6 and the alkali liquid pipeline 7.
In a specific embodiment, the acid/alkali liquid inlet may comprise an acid liquid inlet and an alkali liquid inlet, and the acid liquid pipe 6 and the alkali liquid pipe 7 are respectively connected to the acid liquid inlet and the alkali liquid inlet. In another embodiment, the acid/alkali liquid inlet may be a single inlet, and the acid liquid pipe 6 and the alkali liquid pipe 7 are connected to the inlet in a three-way manner.
In a more preferred embodiment, the pH value detector 5 is further configured to monitor a pH value of a reaction environment in the fenton oxidation tower 3 in real time.
In a more preferred embodiment, the acid-base reaction condition regulation and control device further includes a control unit, and the control unit correspondingly controls the opening and closing of the valves of the acid liquid pipeline 6 and the alkali liquid pipeline 7 in real time according to the pH value of the reaction environment in the fenton oxidation tower 3 monitored by the pH value detector 5 in real time, and releases an appropriate amount of acid liquid or alkali liquid into the fenton oxidation tower 3, so as to control the reaction environment in the fenton oxidation tower 3 at a predetermined acid-base reaction condition.
In some embodiments, the reaction system may further include a settling tank 4, and the post-reaction wastewater outlet 10 is connected to the settling tank 4 by the post-reaction wastewater drain pump.
In some embodiments, the reaction system may further include a water inlet adjusting tank 1 and a primary settling tank 2, the water adjusting tank 1 is connected to the primary settling tank 2, and the primary settling tank 2 is connected to the printing and dyeing wastewater inlet 8 of the fenton oxidation tower 3 through a printing and dyeing wastewater inlet pump.
In a preferred embodiment, the fenton oxidation tower 3 is a four-opening packed tower, the acid-alkali liquid inlet is arranged on one side of the top of the four-opening packed tower, such as the left side of the top of the four-opening packed tower shown in fig. 2, and the printing and dyeing wastewater inlet 8 is arranged on one side of the upper part of the four-opening packed tower, such as the upper left side of the four-opening packed tower shown in fig. 2. The reacted wastewater outlet 10 and the sludge outlet 9 are respectively arranged at two sides of the bottom of the four-opening packed tower, such as the left side and the right side of the bottom of the tower shown in fig. 2.
In a preferred embodiment, the fenton oxidation tower 3 is filled with sludge as a filler.
In a preferred embodiment, a plurality of layers of trays are arranged in the Fenton oxidation tower 3, and a jacket is arranged outside the Fenton oxidation tower 3 and is used for introducing a heat-conducting medium to control the temperature of the Fenton oxidation reaction.
In a preferred embodiment, the printing and dyeing wastewater outlet 10 is a membrane filtration automatic telescopic outlet. The printing and dyeing wastewater outlet 10 adopts a membrane filtration automatic telescopic outlet, so that sludge blockage can be effectively prevented, and the printing and dyeing wastewater outlet rate can be regulated and controlled independently.
The embodiment of the invention also provides a reaction method for efficiently treating printing and dyeing wastewater, which is used for treating the printing and dyeing wastewater by using the reaction system for efficiently treating the printing and dyeing wastewater in any embodiment. Preferably, the fenton oxidation reaction condition in the fenton oxidation tower 3 is controlled to be a weak acid-base reaction condition in real time by the acid-base reaction condition regulating device.
The embodiment of the invention can realize the optimal control of the acid-base reaction conditions during the Fenton oxidation reaction, and effectively improve the removal rate of COD (chemical oxygen demand) of the printing and dyeing wastewater. By using the reaction system provided by the embodiment of the invention, the COD in the printing and dyeing wastewater can be efficiently reduced, the treatment time of the printing and dyeing wastewater can be shortened, the automation degree of equipment is high, the operation is simple and convenient, the cost for treating the COD in the printing and dyeing wastewater is reduced, and the reaction system has a wide application prospect and good economic benefits.
Specific applications and experimental test effects of embodiments of the present invention are further described below.
The printing and dyeing wastewater containing excessive COD can be led into the Fenton oxidation towers of the examples and the comparative examples through a pump, after the wastewater is adsorbed for 60min under the condition of certain pH at room temperature, after the oxidation reaction is carried out for 120min, a water outlet is sampled to measure the COD of the solution, and the removal rate of the COD is calculated.
EXAMPLE 1 (COMPARATIVE EXAMPLE)
The effluent of a certain dye plant in Suzhou, Jiangsu, is selected for experiments, and the COD is measured to be 195 mg/L. In the experiment, chemical sludge after Fenton reaction is filled into a conventional Fenton oxidation tower, the printing and dyeing wastewater led in by a primary settling tank is subjected to oxidation treatment, the volume of the added sludge accounts for 3% of the total volume of the wastewater treatment, and the oxidation time is 120 min. The result shows that the removal rate of COD after the Fenton sludge oxidation treatment reaches 20.6%, which indicates that the Fenton sludge has certain removal effect on the COD in the printing and dyeing wastewater, but the treatment effect in the conventional Fenton oxidation tower is limited.
Experimental example 2
The effluent of a certain dye plant in Suzhou, Jiangsu, is selected for experiments, and the COD is measured to be 195 mg/L. In the experiment, chemical sludge after the Fenton reaction is filled into the Fenton oxidation tower of the embodiment, the printing and dyeing wastewater led in by the primary settling tank is subjected to oxidation treatment, and the volume of the added sludge accounts for 3% of the total volume of the wastewater treatment. Discharging printing and dyeing wastewater after oxidizing for 60min, controlling the outflow rate of the printing and dyeing wastewater to be 100mL/min through a telescopic control valve, and discharging sludge after further oxidizing for 60min after 60 min. The result shows that after Fenton sludge oxidation treatment, the removal rate of COD reaches 32.8%, and compared with the conventional Fenton oxidation tower, the oxidation tower of the embodiment can more effectively remove the content of the printed and dyed COD.
Experimental example 3
The effluent of a certain dye plant in Suzhou, Jiangsu, is selected for experiments, and the COD is measured to be 195 mg/L. In the experiment, chemical sludge after the Fenton reaction is filled into the Fenton oxidation tower of the embodiment, the printing and dyeing wastewater led in by the primary settling tank is subjected to oxidation treatment, and the volume of the added sludge accounts for 3% of the total volume of the wastewater treatment. Discharging sludge after oxidizing for 60min, discharging printing and dyeing wastewater after further oxidizing for 60min after discharging the sludge for 60min, and controlling the outflow rate of the printing and dyeing wastewater to be 100mL/min through a telescopic control valve. As a result, the removal rate of COD after the Fenton sludge oxidation treatment reaches 39.2%, compared with the conventional Fenton oxidation tower, the four-opening oxidation tower of the embodiment can more effectively remove the content of the printing and dyeing COD, and meanwhile, the sludge removal in advance is more beneficial to removing the COD in the printing and dyeing wastewater.
Experimental example 4
The effluent of a certain dye plant in Suzhou, Jiangsu, is selected for experiments, and the COD is measured to be 195 mg/L. In the experiment, chemical sludge after the Fenton reaction is filled into the Fenton oxidation tower of the embodiment, the printing and dyeing wastewater led in by the primary settling tank is subjected to oxidation treatment, and the volume of the added sludge accounts for 6% of the total volume of the wastewater treatment. Discharging sludge after oxidizing for 60min, discharging printing and dyeing wastewater after further oxidizing for 60min after discharging the sludge for 60min, and controlling the outflow rate of the printing and dyeing wastewater to be 100mL/min through a telescopic control valve. As a result, the removal rate of COD after the oxidation treatment of the Fenton sludge is 39.8%, which shows that the COD in the printing and dyeing wastewater is not obviously changed due to the further increase of the dosage of the Fenton sludge.
Experimental example 5
The effluent of a certain dye plant in Suzhou, Jiangsu, is selected for experiments, and the COD is measured to be 195 mg/L. In the experiment, chemical sludge after the Fenton reaction is filled into the Fenton oxidation tower of the embodiment, the printing and dyeing wastewater led in by the primary settling tank is subjected to oxidation treatment, and the volume of the added sludge accounts for 3% of the total volume of the wastewater treatment. And in the Fenton oxidation treatment process, the pH of the solution in the tower is monitored by a pH detector, the release of an acid-base liquid tank is controlled, the pH is adjusted in real time, and the pH of the Fenton oxidation tower is controlled to be 4.5. Discharging sludge after oxidizing for 60min, discharging printing and dyeing wastewater after further oxidizing for 60min after discharging the sludge for 60min, and controlling the outflow rate of the printing and dyeing wastewater to be 100mL/min through a telescopic control valve. The result shows that after Fenton sludge oxidation treatment, the removal rate of COD reaches 50.2%, which indicates that the removal rate of COD in the printing and dyeing wastewater can be greatly improved by regulating and controlling pH in real time.
Experimental example 6
The effluent of a certain dye plant in Suzhou, Jiangsu, is selected for experiments, and the COD is measured to be 195 mg/L. In the experiment, chemical sludge after the Fenton reaction is filled into the Fenton oxidation tower of the embodiment, the printing and dyeing wastewater led in by the primary settling tank is subjected to oxidation treatment, and the volume of the added sludge accounts for 3% of the total volume of the wastewater treatment. And in the Fenton oxidation treatment process, the pH of the solution in the tower is monitored by a pH detector, the release of an acid-base liquid tank is controlled, the pH is adjusted in real time, and the pH of the Fenton oxidation tower is controlled to be 6. Discharging sludge after oxidizing for 60min, discharging printing and dyeing wastewater after further oxidizing for 60min after discharging the sludge for 60min, and controlling the outflow rate of the printing and dyeing wastewater to be 100mL/min through a telescopic control valve. The result shows that the removal rate of COD after Fenton sludge oxidation treatment reaches 42.2%, and the comparison of experiment example 5 shows that the reaction condition is controlled to be a weak acid condition, which is more favorable for Fenton oxidation to remove COD in printing and dyeing wastewater.
The background of the present invention may contain background information related to the problem or environment of the present invention and does not necessarily describe the prior art. Accordingly, the inclusion in the background section is not an admission of prior art by the applicant.
The foregoing is a more detailed description of the invention in connection with specific/preferred embodiments and is not intended to limit the practice of the invention to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and these substitutions and modifications should be considered to fall within the scope of the invention. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the claims.
Claims (10)
1. The reaction system for efficiently treating the printing and dyeing wastewater is characterized by comprising a Fenton oxidation tower, a printing and dyeing wastewater inlet pump, a post-reaction wastewater discharge pump and an acid-base reaction condition regulation and control device, wherein the Fenton oxidation tower is provided with a printing and dyeing wastewater inlet, a post-reaction wastewater outlet, a sludge outlet and an acid-base solution inlet, the printing and dyeing wastewater inlet is connected with the printing and dyeing wastewater inlet pump, the post-reaction wastewater outlet is connected with the post-reaction wastewater discharge pump, the sludge outlet is used for discharging sludge after the Fenton oxidation reaction, and the acid-base reaction condition regulation and control device is connected with the acid-base solution inlet and is used for regulating and controlling the acid-base reaction condition of the Fenton oxidation reaction in real time by adding acid solution or alkali solution into the Fenton oxidation tower.
2. The reaction system for treating printing and dyeing wastewater with high efficiency according to claim 1, characterized by further comprising a sedimentation tank, wherein the post-reaction wastewater outlet is connected to the sedimentation tank through the post-reaction wastewater drainage pump.
3. The reaction system for efficiently treating printing and dyeing wastewater according to claim 1 or 2, wherein the Fenton oxidation tower is a four-port packed tower, the acid-alkali liquid inlet is arranged on one side of the top of the four-port packed tower, the printing and dyeing wastewater inlet is arranged on one side of the upper part of the four-port packed tower, and the wastewater outlet and the sludge outlet after the reaction are respectively arranged on two sides of the bottom of the four-port packed tower.
4. The reaction system for efficiently treating printing and dyeing wastewater according to any one of claims 1 to 3, wherein the acid-base reaction condition regulation and control device comprises an acid liquid tank, an alkali liquid tank, an acid liquid pipeline and an alkali liquid pipeline, the acid liquid tank is used for storing acid liquid, the alkali liquid tank is used for storing alkali liquid, the acid liquid tank and the alkali liquid tank are respectively connected with the acid liquid pipeline and the alkali liquid pipeline, the acid liquid pipeline and the alkali liquid pipeline are connected with the acid-alkali liquid inlet, and the acid liquid pipeline and the alkali liquid pipeline are respectively provided with valves for controlling the opening and closing of the acid liquid pipeline and the alkali liquid pipeline.
5. The reaction system for efficiently treating printing and dyeing wastewater according to claim 4, wherein the pH value adjusting and controlling device further comprises a pH value detector for monitoring the pH value of the reaction environment in the Fenton oxidation tower in real time.
6. The reaction system for efficiently treating printing and dyeing wastewater according to claim 5, wherein the pH control device further comprises a control unit, and the control unit controls the opening and closing of the valves of the acid liquor pipeline and the alkali liquor pipeline correspondingly in real time according to the pH value of the reaction environment in the Fenton oxidation tower monitored by the pH detector in real time, and releases an appropriate amount of acid liquor or alkali liquor into the Fenton oxidation tower so as to control the reaction environment in the Fenton oxidation tower to be in a predetermined pH reaction condition.
7. The reaction system for treating printing and dyeing wastewater with high efficiency according to any one of claims 1 to 6, characterized in that the Fenton oxidation tower is filled with sludge as a filler.
8. The reaction system for efficiently treating printing and dyeing wastewater according to any one of claims 1 to 7, characterized in that a plurality of stages of trays are arranged in the Fenton oxidation tower, and a jacket is arranged outside the Fenton oxidation tower and used for introducing a heat transfer medium to control the temperature of the Fenton oxidation reaction.
9. A reaction system for treating printing and dyeing wastewater with high efficiency as claimed in any one of claims 1 to 8, characterized in that the printing and dyeing wastewater outlet is a membrane filtration automatic telescopic outlet.
10. A reaction method for efficiently treating printing and dyeing wastewater, which is characterized in that the printing and dyeing wastewater is treated by using the reaction system for efficiently treating printing and dyeing wastewater according to any one of claims 1 to 9, and preferably, the fenton oxidation reaction conditions in the fenton oxidation tower are controlled to be weak acid-base reaction conditions in real time by the acid-base reaction condition control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010857461.6A CN111925020A (en) | 2020-08-24 | 2020-08-24 | Reaction system and method for efficiently treating printing and dyeing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010857461.6A CN111925020A (en) | 2020-08-24 | 2020-08-24 | Reaction system and method for efficiently treating printing and dyeing wastewater |
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| CN204918124U (en) * | 2015-06-12 | 2015-12-30 | 宁波大地化工环保有限公司 | Fenton oxidation degradation waste water COD's reaction unit |
| CN106702684A (en) * | 2015-11-12 | 2017-05-24 | 青岛海尔洗衣机有限公司 | Drainage structure of washing machine without water between buckets and washing machine |
| CN108178281A (en) * | 2018-02-11 | 2018-06-19 | 吉林建筑大学 | Handle the Fenton oxidation reactor automaton and method of lignite upgrading waste water |
| CN212246587U (en) * | 2020-08-24 | 2020-12-29 | 清华大学深圳国际研究生院 | Reaction system for efficiently treating printing and dyeing wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204918124U (en) * | 2015-06-12 | 2015-12-30 | 宁波大地化工环保有限公司 | Fenton oxidation degradation waste water COD's reaction unit |
| CN106702684A (en) * | 2015-11-12 | 2017-05-24 | 青岛海尔洗衣机有限公司 | Drainage structure of washing machine without water between buckets and washing machine |
| CN108178281A (en) * | 2018-02-11 | 2018-06-19 | 吉林建筑大学 | Handle the Fenton oxidation reactor automaton and method of lignite upgrading waste water |
| CN212246587U (en) * | 2020-08-24 | 2020-12-29 | 清华大学深圳国际研究生院 | Reaction system for efficiently treating printing and dyeing wastewater |
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