CN113292176A - Quick decoloration device of dyestuff waste water based on biological charcoal is in coordination with persulfate catalysis - Google Patents
Quick decoloration device of dyestuff waste water based on biological charcoal is in coordination with persulfate catalysis Download PDFInfo
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- CN113292176A CN113292176A CN202110543809.9A CN202110543809A CN113292176A CN 113292176 A CN113292176 A CN 113292176A CN 202110543809 A CN202110543809 A CN 202110543809A CN 113292176 A CN113292176 A CN 113292176A
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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Abstract
The invention discloses a quick dye wastewater decoloring device based on biochar in cooperation with persulfate catalysis, which sequentially comprises the following components in the walking direction of dye wastewater to be processed: the activation bin is internally provided with an activation area provided with a metal modified adsorption material; the first adsorption bin and the second adsorption bin are provided with adsorption materials and are communicated with the activation bin; wherein, the dye wastewater to be treated is mixed with persulfate before entering the activation bin. The invention utilizes the metal modified biochar to efficiently catalyze persulfate to generate SO with strong oxidizing property4 ·‑Quickly converting macromolecular dye molecules into colorless micromolecular intermediate products to realize quick decolorization of dye wastewater, and finally mineralizing the dye wastewater into CO2And H2And O. Then utilizes the pH regulation and adsorption performance of the biochar (non-metal modified) to further solve the problem of advanced oxidation of metal modified biochar/persulfateAcidification of the technical system and partial metal dissolution.
Description
Technical Field
The invention relates to the field of dye wastewater treatment equipment. More specifically, the invention relates to a device for quickly decoloring dye wastewater based on the catalysis of biochar in cooperation with persulfate.
Background
With the development of the printing and dyeing industry, the demand for dyes is increasing, and synthetic dyes are gradually developed and produced in large scale for various industries. Relevant data show that the types of commercial dyes produced in China reach more than 10 ten thousand per year, and the yield can reach 70 ten thousand tons. The appearance of synthetic dyes, while solving the problem of natural dye discoloration, also presents new challenges. Since the dye mixture (dye molecules and chemicals) does not adhere completely to the fabric or textile, about 20% of the dye is lost during the printing process. Furthermore, the synthetic dye molecules, due to the presence of co-pigments (water-soluble linking compounds) and chromophores (color-imparting compounds), are relatively complex and stable in structure and resistant to degradation upon contact with water or other detergents. If the wastewater containing high-concentration dye is discharged into a water environment without proper treatment, the water quality and aesthetic feeling of the water body can be seriously influenced, so that the social function performed by an ecosystem is hindered, and the sustainable development of the environment is threatened. Therefore, the treatment of dye waste water is imperative, and the first step therein is the efficient destruction of stable chromophoric group dyes in dye molecules.
Therefore, it is highly desirable to provide a device capable of treating dye wastewater with high efficiency.
Disclosure of Invention
The invention aims to provide a device for quickly decoloring dye wastewater based on catalysis of biochar and persulfate, which mainly utilizes metal modified biochar to efficiently catalyze persulfate to generate SO with strong oxidizing property4 ·-The macromolecular dye molecules are quickly converted into colorless micromolecular intermediate products, so that the dye wastewater is quickly decolorized, and finally is mineralized into CO2And H2And O. And then, the pH regulation performance and the adsorption performance of the biochar (non-metal modified) are utilized to further overcome the defects of acidification of a metal modified biochar/persulfate catalytic system and partial metal dissolution, so that the dye substances in the dye wastewater are efficiently removed.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a rapid decoloring apparatus for dye wastewater catalyzed by biochar in cooperation with persulfate, the apparatus comprising, in order along a traveling direction of the dye wastewater to be treated:
the activation bin is internally provided with an activation area provided with a metal modified adsorption material;
the first adsorption bin is communicated with the activation bin, and an adsorption material is arranged in the first adsorption bin; and
the second adsorption bin is communicated with the first adsorption bin, and an adsorption material is arranged in the second adsorption bin;
wherein, the dye wastewater to be treated is mixed with persulfate before entering the activation bin.
In one preferred embodiment, in the device for rapidly decolorizing dye wastewater based on catalysis of biochar in cooperation with persulfate, a plurality of flow distribution plates are arranged in the activation bin along the traveling direction of the dye wastewater to be treated, all the flow distribution plates and the inner wall of the activation bin form relatively independent spaces together, and the metal-modified adsorption material is filled in the spaces to form the activation zone.
In one preferred embodiment, in the device for rapidly decolorizing dye wastewater based on catalysis of biochar in cooperation with persulfate, the activation bin is sleeved with the first adsorption bin, the liquid outlet end of the activation bin is communicated with the inner space of the activation bin, and an adsorption material is arranged in the activation bin.
In one preferable embodiment, in the device for rapidly decolorizing dye wastewater based on catalysis of biochar in cooperation with persulfate, a liquid inlet end for dye wastewater to be treated to enter is arranged at the bottom of the activation bin, the inner diameter of the upper end of the activation bin is larger than that of the top of the lower end of the activation bin, the upper end of the activation bin is opened and is communicated with the inside of the first adsorption bin, and the activated wastewater overflows and enters the first adsorption bin.
In a preferred embodiment of the device, in the device for rapidly decolorizing dye wastewater based on catalysis of biochar in cooperation with persulfate, the second adsorption bin is sleeved outside the activation bin and is located inside the first adsorption bin, the second adsorption bin and the activation bin form an annular second adsorption area, and the first adsorption bin and the second adsorption bin form an annular first adsorption area.
In one preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, a support plate is transversely arranged in the first adsorption zone, and an adsorption material is filled above the support plate;
a first baffle is arranged in the first adsorption area and rotates along the annular first adsorption area under the impact of liquid;
a second baffle is arranged in the second adsorption area and rotates along the annular second adsorption area under the impact of liquid.
In a preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, the metal-modified adsorption material is prepared by the following steps:
the waste biomass is pyrolyzed for one time to obtain biochar particles;
mixing the biochar particles with a metal salt solution for modification treatment to obtain a first biochar mixed solution;
and drying the first biochar mixed solution, performing secondary pyrolysis after drying, and grinding to obtain the metal modified biochar.
In a preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, the adsorption material is nonmetal-modified biochar which is prepared by the following steps:
the waste biomass is pyrolyzed for one time to obtain biochar particles;
mixing the biochar particles with a chemical solution for modification treatment to obtain a second biochar mixed solution;
and drying the second biochar mixed solution, performing secondary pyrolysis after drying, and grinding to obtain the non-metal modified biochar.
In a preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, the metal salt solution is any one or a mixture of several of the following metal salts: FeCl3、FeSO4、MnCl2、MnSO4、CoCl2Or CoSO4。
In a preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, a one-way water inlet is arranged below the first adsorption bin, so that liquid treated by the first adsorption bin is allowed to flow into the second adsorption bin;
the bottom of the activation bin is provided with a drainage end for outputting wastewater;
and back-flushing water distribution pipes for back flushing are arranged below the first adsorption bin and the second adsorption bin and are communicated with an external clear water source.
The invention at least comprises the following beneficial effects: the device provided by the invention mainly utilizes metal modified biochar to efficiently catalyze persulfate to generate SO with strong oxidizing property4 ·-Quickly converting macromolecular dye molecule into colorless small molecular intermediate product, and finally mineralizing it into CO2And H2And O. And then, the pH regulation performance and the adsorption performance of the biochar (non-metal modified) are utilized to further overcome the defects of acidification and partial metal dissolution of a metal modified biochar/persulfate advanced oxidation technology system, so that the dye substances in the dye wastewater are efficiently removed.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of a device for rapidly decolorizing dye wastewater based on biochar in cooperation with persulfate catalysis in one embodiment.
FIG. 2 is a schematic structural diagram of a device for rapidly decolorizing dye wastewater based on biochar in cooperation with persulfate catalysis in another embodiment.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "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 ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a rapid decoloring apparatus for dye wastewater catalyzed by biochar in cooperation with persulfate, as shown in fig. 1, in a traveling direction of dye wastewater to be treated, comprising in order:
the activation bin 1 is internally provided with an activation area 4 for arranging the metal modified adsorption material;
the first adsorption bin 2 is communicated with the activation bin, and an adsorption material is arranged in the first adsorption bin 2; and
the second adsorption bin 3 is communicated with the first adsorption bin 2, and an adsorption material is arranged in the second adsorption bin 3;
wherein, the dye wastewater to be treated is firstly mixed with persulfate before entering the activation bin 1.
In the above embodiment, the metal-modified biochar in the activation bin 1 can efficiently catalyze persulfate to generate SO with strong oxidizing property4 ·-Quickly converting macromolecular dye molecule into colorless small molecular intermediate product, and finally mineralizing it into CO2And H2And O, thereby effectively removing macromolecular dye molecules in the wastewater. Wherein, the persulfate can be solid pure persulfate or liquid persulfate solution, or both, or other raw materials containing persulfate.
However, since the effluent water after the activation process inevitably has acidification and metal ion elution problems, in order to solve the problems, the first adsorption bin 2 and the second adsorption bin 3 are provided after the activation bin 1, and the adsorbents in the first adsorption bin 2 and the second adsorption bin 3 are nonmetal-modified biochar, and the purpose of such arrangement is to: (1) neutralizing the pH value of the effluent; (2) adsorbing the dissolved metal ions; (3) adsorbing dye molecules; (4) the charcoal partially activates PS, consuming persulfate; (5) intercepting suspended matters. Further overcomes the defects of acidification of a metal modified biochar/persulfate advanced oxidation technology system and dissolution of part of metal, thereby realizing the efficient removal of dye substances in the dye wastewater.
In the above embodiment, the sewage is firstly activated by the activation bin 1, and then enters the first adsorption bin 2 and enters the biochar carbon layer therein after the activation, and because the carbon layer has a large area and long hydraulic retention time, sufficient time is provided for biochar adsorption and neutralization. Through the adsorption neutralization effect of the biochar, the sewage enters the second adsorption bin 3 for further adsorption treatment.
It should be further noted that the water inlet end 12 of the activation bin 1 is used for feeding sewage, the water outlet end of the activation bin 1 is communicated with the water inlet end of the first adsorption bin 2, the water outlet end of the first adsorption bin 2 is communicated with the water inlet end of the second adsorption bin 3, and the water outlet end of the third adsorption bin is used for flowing out purified water.
In addition, in order to prolong the contact time between the sewage and the metal modified adsorption material in the activation bin 1 and improve the activation treatment effect, the water inlet end 12 of the activation bin 1 can be arranged at the bottom end.
As shown in fig. 2, in another preferred embodiment, in the device for rapidly decolorizing dye wastewater based on biochar in cooperation with persulfate catalysis, a plurality of flow distribution plates 11 are arranged in the activation bin 1 along the traveling direction of the dye wastewater to be treated, all the flow distribution plates 11 and the inner wall of the activation bin 1 jointly form a relatively independent space, which is not truly completely and absolutely independent, but is relatively independent from other spaces in the activation bin 1, and the relatively independent space is filled with the metal-modified adsorption material to form the activation zone 11. The metal-modified adsorbent material may be immobilized within the activation region 11 by, for example, immobilizing the metal-modified adsorbent material within a mesh structure, and then immobilizing the mesh structure within the activation region 11. Now provide one of them distribution mode of flow distribution plate 11 is as follows, all flow distribution plate 11 is including a plurality of upside flow distribution plates that are located the hoop distribution of top and a plurality of downside flow distribution plates that are located the hoop distribution of below, just upside flow distribution plate with downside flow distribution plate inclines respectively, and homogeneous phase is relative orientation, forms relatively independent space.
In another preferred embodiment, the first adsorption bin 2 is sleeved with the activation bin, the liquid outlet end of the activation bin 1 is communicated with the inner space of the activation bin 1, an adsorption material is arranged in the first adsorption bin, and the adsorption material is non-metal modified biochar.
In one preferred embodiment, in the device for rapidly decolorizing dye wastewater based on catalysis of biochar in cooperation with persulfate, the bottom of the activation bin 1 is provided with a liquid inlet end 12 for allowing dye wastewater to be treated to enter, the inner diameter of the upper end of the activation bin 1 is larger than that of the top of the lower end of the activation bin, the upper end of the activation bin 1 is opened and is communicated with the inside of the first adsorption bin 2, and the activated wastewater overflows and enters the first adsorption bin 2.
In more detail, the upper part of the activation bin 1 is in a gradually-expanding opening shape (round table shape), the middle part is in a cylindrical shape, and the lower part is in a funnel shape, so that when water flows fast, the upper part is in a gradually-expanding opening shape, the flow velocity of the water flow can be reduced, so that the water flow slowly overflows and flows into the first adsorption bin 2 without splashing, the top end of the activation bin 1 is provided with an overflow water collecting tank, when sewage flows out of the external dye wastewater storage tank 5 and is mixed with persulfate solution flowing out of the persulfate storage tank 10 and then enters the activation zone 4 in the activation bin 1 from the liquid inlet end 12 at the bottom end of the activation bin 1, persulfate is immediately activated by metal modified biochar to generate a large amount of active substances with strong oxidizing property, then the dye molecules in the mixed solution are attacked, and the macromolecular dye is decolorized and oxidized and degraded immediately, and is converted into a micromolecular intermediate easy to treat or is completely mineralized into CO.2And H2And O. Because the flow distribution plate 11 is arranged in the activation area, water flow circulation is formed in the activation area, and the full contact reaction of metal modified biochar, persulfate and dye is facilitated. The treated water flow continuously rises to the end of the central activation zone, namely the top end of the activation bin 1, and then overflows into the first adsorption bin 2 through an overflow water collecting tank.
In one preferred embodiment, in the device for rapidly decolorizing dye wastewater based on catalysis of biochar in cooperation with persulfate, the second adsorption bin 3 is sleeved outside the activation bin 1, the second adsorption bin 3 is located inside the first adsorption bin 2, the second adsorption bin 3 and the activation bin 1 form an annular second adsorption area, and the first adsorption bin 2 and the second adsorption bin 3 form an annular first adsorption area. A one-way water inlet is arranged below the first adsorption bin 2, and liquid treated by the first adsorption bin 2 is allowed to flow into the second adsorption bin 3;
the sewage is further ph-regulated and adsorbed by the nonmetal modified biochar in the first adsorption bin 2, and then enters the second adsorption bin 3 through the one-way water inlet.
In one preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, a support plate 21 is transversely arranged in the first adsorption zone, and an adsorption material is filled above the support plate 21; a first baffle 22 is arranged in the first adsorption zone and rotates along the annular first adsorption zone under the impact of liquid; the first baffle 22 is located below the support plate 21, so that liquid can be stirred without external power, impurities in the liquid can be settled conveniently, and the liquid cannot enter the next flow for adsorption treatment.
Set up second baffle 31 in the second adsorption zone, it is along annular under the liquid impact the second adsorption zone is rotatory, need not be with the help of outside power, just can stir liquid, makes things convenient for impurity in it to sink the end, can't get into next flow and adsorbs the processing.
In a preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, the metal-modified adsorption material is prepared by the following steps:
the waste biomass is pyrolyzed to obtain biochar particles; wherein the waste biomass is one or a combination of more of sewage sludge, millet bran, straws, peanut shells, cotton shells, wormwood and peach kernels; the preparation process of the biochar particles is as follows: the waste biomass is used as a raw material, and is placed in a nitrogen-filled tubular furnace for pyrolysis for 1-6 hours after being crushed and ground, wherein the pyrolysis temperature is 200-800 ℃. And washing and deashing the biochar particles obtained by pyrolysis for multiple times, and drying in an oven. In order to facilitate later modification, the dried biochar is ground, and the particle size of the biochar is controlled to be 0.50-0.80 mm.
Mixing the biochar particles with a metalModifying the salt solution to obtain a first biochar mixed solution; the aim is to enable the charcoal to successfully load transition metal with high-efficiency persulfate activation performance. Any one or more of transition metal salts of the metal salt solution may be mixed, and specific examples thereof may be any one or more of the following metal salts: FeCl3、FeSO4、MnCl2、MnSO4、CoCl2Or CoSO4。
And drying the first biochar mixed solution, performing secondary pyrolysis after drying, and grinding to obtain the metal modified biochar.
In a preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, the adsorption material is nonmetal-modified biochar which is prepared by the following steps:
the waste biomass is pyrolyzed to obtain biochar particles; wherein the waste biomass is one or a combination of more of sewage sludge, millet bran, straws, peanut shells, cotton shells, wormwood and peach kernels; the preparation process of the biochar particles is as follows: the waste biomass is used as a raw material, and is placed in a nitrogen-filled tubular furnace for pyrolysis for 1-6 hours after being crushed and ground, wherein the pyrolysis temperature is 200-800 ℃. And washing and deashing the biochar particles obtained by pyrolysis for multiple times, and drying in an oven. In order to facilitate later modification, the dried biochar is ground, and the particle size of the biochar is controlled to be 0.50-0.80 mm.
Mixing the biochar particles with a chemical solution for modification treatment to obtain a second biochar mixed solution; the modification method is one or more of acid modification, alkali modification, physical modification, oxidant modification, reducing agent modification and the like, and the modification method is mainly used for changing the pore structure of the original biochar, increasing the specific surface area and enhancing the adsorption capacity. The chemical solution is phosphoric acid, hydrochloric acid, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium persulfate, etc. Taking phosphoric acid modification as an example, the preparation steps of the phosphoric acid modified biochar are as follows: adding the biochar particles into a phosphoric acid solution with the mass percent of 50%, fully soaking, placing the mixed solution into a constant-temperature water bath shaking table, and oscillating for 3 hours at the temperature of 50 ℃ and the rotating speed of 160 rpm/min. Taking modification of potassium carbonate as an example, the preparation steps of the potassium carbonate modified biochar are as follows: adding the biochar particles into a potassium carbonate solution with the mass percentage of 23%, fully soaking, placing a mixed solution of the biochar particles in a constant-temperature water bath shaking table, and oscillating at the temperature of 35 ℃ and the rotating speed of 200 rpm/min.
And drying the second biochar mixed solution, performing secondary pyrolysis after drying, and grinding to obtain the metal modified biochar and obtain the nonmetal modified biochar.
In one preferred embodiment, in the device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate, the bottom of the activation bin 1 is provided with a drainage end for outputting wastewater, and the drainage end is controlled by a valve;
when the metal modified biochar for activating the persulfate in the activation bin 1 loses activity, the water inlet end 12 of the mixed liquid of the dye wastewater and the persulfate is closed, a valve for controlling clear water is opened (the water inlet end 12 of the activation bin 1 is also connected to an external clear water source 7), the flow velocity of the water flow is increased, and the metal modified biochar can easily flow out along with the water flow and is discharged into the first adsorption bin 2 under the action of strong water flow. Due to the high flow rate in the activation zone 11 and the high activation reaction rate, the metal-modified biochar gradually loses the activity on persulfate, but still has better adsorption performance because the adsorption speed is slower than that of advanced oxidation. Therefore, the metal modified biochar can still exert the adsorption effect after entering the first adsorption bin 2.
And back-flushing water distribution pipes 6 for back flushing are arranged below the first adsorption bin and the second adsorption bin, and the back-flushing water distribution pipes 6 are communicated with an external clear water source 7. In practical application, each pipeline is provided with a valve and a pump for controlling the opening and closing of the pipeline.
Specifically, a recycling pipeline 8 is further provided, one end of the recycling pipeline 8 is connected to the first adsorption bin 2 and the second adsorption bin 3 so as to adsorb, recycle and utilize biochar (metal modified biochar and nonmetal modified biochar) in the recycling pipeline, and the other end of the recycling pipeline 8 is communicated with a biochar recycling tank 9.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a quick discoloring device of dyestuff waste water based on catalysis of biological charcoal persulfate in coordination, its characterized in that, along the walking direction of pending dyestuff waste water, quick discoloring device of dyestuff waste water based on catalysis of biological charcoal persulfate in coordination includes in proper order:
the activation bin is internally provided with an activation area provided with a metal modified adsorption material;
the first adsorption bin is communicated with the activation bin, and an adsorption material is arranged in the first adsorption bin; and
the second adsorption bin is communicated with the first adsorption bin, and an adsorption material is arranged in the second adsorption bin;
wherein, the dye wastewater to be treated is mixed with persulfate before entering the activation bin.
2. The device for rapidly decolorizing dye wastewater based on the catalysis of biochar in coordination with persulfate according to claim 1, characterized in that a plurality of flow distribution plates are arranged in the activation bin along the traveling direction of the dye wastewater to be treated, all the flow distribution plates and the inner wall of the activation bin form relatively independent spaces together, and the metal-modified adsorption material is filled in the spaces to form the activation zone.
3. The device for rapidly decolorizing dye wastewater based on the catalysis of biochar in coordination with persulfate according to claim 1, wherein the activation bin is sleeved with the first adsorption bin, the liquid outlet end of the activation bin is communicated with the inner space of the activation bin, and an adsorption material is arranged in the activation bin.
4. The device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate according to claim 3, characterized in that a liquid inlet end for the dye wastewater to be treated to enter is arranged at the bottom of the activation bin, the inner diameter of the upper end of the activation bin is larger than that of the top of the lower end of the activation bin, the upper end of the activation bin is opened and is communicated with the inside of the first adsorption bin, and the activated wastewater overflows and enters the first adsorption bin.
5. The device for rapidly decolorizing dye wastewater based on the catalysis of biochar in cooperation with persulfate according to claim 3, wherein the second adsorption bin is sleeved outside the activation bin and is located inside the first adsorption bin, the second adsorption bin and the activation bin form an annular second adsorption area, and the first adsorption bin and the second adsorption bin form an annular first adsorption area.
6. The device for rapidly decolorizing dye wastewater based on the catalysis of biochar in coordination with persulfate according to claim 5, characterized in that a support plate is transversely arranged in the first adsorption zone, and an adsorption material is filled above the support plate;
a first baffle is arranged in the first adsorption area and rotates along the annular first adsorption area under the impact of liquid;
a second baffle is arranged in the second adsorption area and rotates along the annular second adsorption area under the impact of liquid.
7. The device for rapidly decoloring dye wastewater based on the cooperation of biochar and persulfate as well as on claim 1, wherein the metal modified adsorption material is prepared by the following steps:
the waste biomass is pyrolyzed for one time to obtain biochar particles;
mixing the biochar particles with a metal salt solution for modification treatment to obtain a first biochar mixed solution;
and drying the first biochar mixed solution, performing secondary pyrolysis after drying, and grinding to obtain the nonmetal modified biochar.
8. The device for rapidly decoloring dye wastewater based on the cooperation of biochar and persulfate as well as the catalysis of claim 1, wherein the adsorbing material is nonmetal-modified biochar which is prepared by the following steps:
the waste biomass is pyrolyzed for one time to obtain biochar particles;
mixing the biochar particles with a chemical solution for modification treatment to obtain a second biochar mixed solution;
and drying the second biochar mixed solution, performing secondary pyrolysis after drying, and grinding to obtain the metal modified biochar and obtain the nonmetal modified biochar.
9. The device for rapidly decolorizing dye wastewater based on the catalysis of biochar in coordination with persulfate according to claim 7, wherein the metal salt solution is any one or a mixture of several transition metal salts.
10. The device for quickly decoloring dye wastewater based on biological carbon and persulfate catalysis according to claim 1, wherein a one-way water inlet is formed below the first adsorption bin to allow liquid treated by the first adsorption bin to flow into the second adsorption bin;
the bottom of the activation bin is provided with a drainage end for outputting wastewater;
and back-flushing water distribution pipes for back flushing are arranged below the first adsorption bin and the second adsorption bin and are communicated with an external clear water source.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115090262A (en) * | 2022-06-08 | 2022-09-23 | 湖南仁和环保科技有限公司 | Cerium phosphate modified biogas residue biochar and preparation method and application thereof |
| CN115555006A (en) * | 2022-11-08 | 2023-01-03 | 广东省科学院生态环境与土壤研究所 | Preparation method and application of enteromorpha biological carbon catalyst |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115090262A (en) * | 2022-06-08 | 2022-09-23 | 湖南仁和环保科技有限公司 | Cerium phosphate modified biogas residue biochar and preparation method and application thereof |
| CN115090262B (en) * | 2022-06-08 | 2023-12-08 | 湖南仁和环保科技有限公司 | Cerium phosphate modified biogas residue biochar and preparation method and application thereof |
| CN115555006A (en) * | 2022-11-08 | 2023-01-03 | 广东省科学院生态环境与土壤研究所 | Preparation method and application of enteromorpha biological carbon catalyst |
| CN115555006B (en) * | 2022-11-08 | 2023-08-15 | 广东省科学院生态环境与土壤研究所 | Preparation method and application of enteromorpha biological carbon catalyst |
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