Photovoltaic panel dedusting gel preparation method based on multi-source solid waste quality-divided utilization

Abstract

The invention discloses a photovoltaic panel dedusting gel preparation method based on multi-source solid waste quality-divided utilization. The method comprises the following steps: treating solid wastes to obtain slurry; adding 100 mL of the prepared slurry into a beaker, transferring the beaker into a constant-temperature magnetic stirrer for preheating treatment, then respectively adding a certain amount of acrylic acid, N, N '-methylene bisacrylamide, ammonium persulfate and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methyl propiophenone into the beaker, and continuously stirring in the constant-temperature magnetic stirrer; when the slurry is in a viscous state, stopping stirring to prepare gel; according to different scenes, the gel is brushed on the surface of a photovoltaic panel, and then the gel is cured for a certain time under illumination to form a gel layer. As a hydrogel material is regarded as a potential solution for photovoltaic dust removal due to a three-dimensional network structure and high adsorbability of the hydrogel material, kitchen-based organic gel and sludge-based porous gel are respectively constructed aiming at the characteristics of kitchen waste and municipal sludge, so that resource utilization of the kitchen waste and the sludge is expected to be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection and photovoltaic panel cleaning, and specifically relates to a method for preparing photovoltaic panel dust removal gel based on quality-based utilization of multi-source solid waste. Background Art

[0002] Traditional cleaning methods such as mechanical scraping can easily damage the anti-reflective coating of photovoltaic panels. High-pressure water washing consumes 3-5 liters of water per square meter, which is limited in arid areas. Chemical cleaning agent residues may corrode components and pollute the soil. More importantly, the above methods have a removal efficiency of less than 30% for particles with a particle size of less than 10 μm. Such particles are the main cause of light attenuation due to their high specific surface area and strong adsorption.

[0003] The country also encourages all regions to carry out the construction of "zero-waste cities" and minimize landfill volume by promoting green development and lifestyles. Therefore, the issues of food waste treatment and disposal and the comprehensive utilization of sludge in terms of reduction, harmlessness and resource utilization need to be urgently addressed. Summary of the invention

[0004] In order to solve the above-mentioned technical problems existing in the prior art, the present invention provides a method for preparing photovoltaic panel dust removal gel based on the fractionation and utilization of multi-source solid waste, which mainly aims at improving environmental protection and photovoltaic panel cleaning and dust removal technology, while realizing the resource utilization of solid waste (kitchen waste, sludge).

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a method for preparing a photovoltaic panel dust removal gel based on the quality-based utilization of multi-source solid waste, comprising the following steps: S1. Processing solid waste to obtain slurry; S2, taking 100 mL of the slurry prepared in step S1 and adding it to a beaker, transferring it to a constant temperature magnetic stirrer for preheating treatment, and after a certain period of time, adding a certain amount of acrylic acid (AA), N,N'-methylenebisacrylamide (MBA), ammonium persulfate (APS) and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone (Irgacure2959) to the beaker respectively, and continuing to stir in the constant temperature magnetic stirrer; S3, when the slurry becomes viscous, stirring is stopped to obtain a gel precursor; S4. According to different scenarios, the gel precursor is brushed onto the surface of the photovoltaic panel, and then cured under light for a certain period of time to form a gel layer.

[0006] Furthermore, the solid waste is food waste, and step S1 specifically comprises: screening the food waste to remove impurities and mixing it with water, placing it in a crusher for treatment to obtain homogenized food waste slurry, and filtering it through a filter for later use.

[0007] Furthermore, the mass ratio of the food waste to water is 1:2, and the processing time in the crusher is 3-5 minutes.

[0008] Furthermore, the filter screen is 100 mesh, and the solid content of the obtained kitchen slurry is 10%.

[0009] Furthermore, the solid waste is sludge, and step S1 specifically comprises: taking a certain amount of dilute sludge from a sewage treatment plant and placing it in a beaker, and obtaining a modified sludge slurry with a porous structure after irradiation in a microwave reactor.

[0010] Furthermore, the sludge moisture content is 95-98%, and the microwave reaction time is 5-8 minutes.

[0011] Furthermore, the temperature of the thermostatic magnetic stirrer in step S2 is 70° C., the AA used is 8.4% by weight of the slurry dry basis, MBA is 1.79% by weight of AA, APS is 1.19% by weight of AA, and Irgacure 2959 is 2.38% by weight of AA.

[0012] Furthermore, in step S4, the gel liquid is brushed onto the photovoltaic panel and then cured under ultraviolet light for 2 h to form a gel layer.

[0013] By adopting the above technical solution, the present invention has the following advantages and beneficial effects compared with the prior art: (1) The present invention has developed a method for preparing photovoltaic panel dust removal gel based on multi-source solid waste, which has a simple process and low cost. By improving photovoltaic dust removal technology, the resource utilization of kitchen waste and sewage sludge can be realized.

[0014] (2) The brushable hydrogel of the present invention utilizes the synergistic effects of viscoelastic adsorption, porous interception and mineral barrier to efficiently remove tiny particles on the surface of photovoltaic panels compared to traditional dust removal methods, and the dust removal effect is significantly improved.

[0015] (3) Traditional photovoltaic panel dust removal not only consumes a lot of manpower and water resources, but may also damage the equipment due to frequent operation. The present invention uses multi-source solid waste to prepare hydrogel, with low raw material cost, simple preparation and brushing operations, and effectively reduces maintenance costs.

[0016] In summary, since hydrogel materials are regarded as potential solutions due to their three-dimensional network structure and high adsorption, the present invention develops a method for preparing photovoltaic panel dust removal gel based on the differentiated utilization of multi-source solid waste. According to the characteristics of food waste and municipal sludge, food waste-based organic gel and sludge-based porous gel are constructed respectively, in order to realize the resource utilization of food waste and sludge.

[0017] The present invention constructs independent gel systems based on the characteristics of restaurant kitchen waste and municipal sludge: (1) restaurant kitchen waste-based organic gel: the screened restaurant kitchen waste is mixed with water, and a low-temperature elastic layer is formed through graft copolymerization and UV curing; (2) sludge-based porous gel: sludge with a water content of 95-98% is modified by microwave irradiation to form a porous structure, and a high water-retaining gel is prepared through a synergistic cross-linking system; the two types of gels are selectively applied according to environmental parameters (temperature / humidity / particle concentration), and the particles are efficiently removed through the synergistic effects of viscoelastic adsorption, porous interception and mineral barriers, reducing the particle concentration by 14.6% per megawatt photovoltaic system, in order to achieve the dual goals of solid waste resource utilization and photovoltaic clean efficiency enhancement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A flow chart for the preparation of kitchen-based organogel; Figure 2 Flow chart for the preparation of sludge-based porous gel. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0020] Embodiment 1: Figure 1 As shown, the method for preparing the photovoltaic panel dust removal gel based on the quality-differentiated utilization of multi-source solid waste of the present invention comprises the following steps: S1, sorting the kitchen waste to remove impurities such as bones and disposable chopsticks, then mixing the kitchen waste with water at a mass ratio of 1:2, placing it in a crusher for 3-5 minutes to obtain a homogenized slurry with a solid content of 10%, and filtering it through a 100-mesh filter for later use; S2. Take 100 mL of the homogenized slurry of the kitchen waste in a beaker, transfer it to a constant temperature magnetic stirrer for preheating for 15 min, then add a certain amount of AA to the homogenized slurry of the kitchen waste, add APS after 10 min, add MBA after 1 min, and then immediately add Irgacure2959, and stir in a constant temperature magnetic stirrer at 70 °C (AA is 8.4% of the dry mass of the slurry, MBA is 1.79% of the mass of AA, APS is 1.19% of the mass of AA, and Irgacure2959 is 2.38% of the mass of AA); S3, when the slurry becomes viscous, the stirring is stopped to obtain a gel precursor; S4. According to different scenarios, the gel precursor is applied to the surface of the photovoltaic panel with a brush, and then cured in the sun for 2 hours to form a kitchen waste and sludge gel layer.

[0021] Embodiment 2: Figure 2As shown, the method for preparing the photovoltaic panel dust removal gel based on the quality-differentiated utilization of multi-source solid waste of the present invention comprises the following steps: S1. Take a certain amount of thin sludge with a moisture content of 95-98% and place it in a beaker. Irradiate it in a microwave reactor for 5-8 minutes, stir it every 2 minutes, and cool it after treatment to obtain a modified sludge slurry with a porous structure. S2. Take 100 mL of the modified sludge slurry in a beaker, transfer it to a constant temperature magnetic stirrer for preheating for 15 min, then add a certain amount of AA to the modified sludge slurry, add APS after 10 min, add MBA after 1 min, and then immediately add Irgacure2959, and stir in a constant temperature magnetic stirrer at 70 °C (AA is 8.4% of the dry mass of the slurry, MBA is 1.79% of the mass of AA, APS is 1.19% of the mass of AA, and Irgacure2959 is 2.38% of the mass of AA); S3, when the slurry becomes viscous, stop stirring to obtain a gel; S4. According to different scenarios, the gel is applied to the surface of the photovoltaic panel with a brush, and then cured in the sun for 2 hours to form a kitchen waste and sludge gel layer.

[0022] The above embodiments illustrate the basic principles and features of the present invention, but the above only illustrates the preferred embodiments of the present invention and is not limited to the embodiments. Under the inspiration of this patent, a person skilled in the art can make many forms of deformation and improvement without departing from the scope of protection of the present invention and the claims, which are all within the protection scope of the present invention. Therefore, the patent and protection scope of the present invention shall be subject to the attached claims.

Claims

1. A method for preparing a photovoltaic panel dust removal gel based on the quality-based utilization of multi-source solid waste, characterized in that: The following steps are involved: S1. Processing solid waste to obtain slurry; S2, taking 100 mL of the slurry prepared in step S1 and adding it to a beaker, transferring it to a constant temperature magnetic stirrer for preheating treatment, and after a certain period of time, adding a certain amount of acrylic acid (AA), N,N'-methylenebisacrylamide (MBA), ammonium persulfate (APS) and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone (Irgacure2959) to the beaker respectively, and continuing to stir in the constant temperature magnetic stirrer; S3, when the slurry becomes viscous, stirring is stopped to obtain a gel precursor; S4. According to different scenarios, the gel precursor is brushed onto the surface of the photovoltaic panel, and then cured under light for a certain period of time to form a gel layer.

2. The method for preparing photovoltaic panel dust removal gel based on multi-source solid waste fractionation and utilization according to claim 1 is characterized in that: The solid waste is food waste, and step S1 specifically comprises: screening the food waste to remove impurities and mixing it with water, placing it in a crusher for treatment to obtain homogenized food waste slurry, and filtering it through a filter for later use.

3. The method for preparing the photovoltaic panel dust removal gel based on the quality-based utilization of multi-source solid waste according to claim 2, characterized in that: The mass ratio of food waste to water is 1:2, and the processing time in the crusher is 3-5 minutes.

4. The method for preparing photovoltaic panel dust removal gel based on multi-source solid waste fractionation and utilization according to claim 3 is characterized in that: The filter screen is 100 mesh, and the solid content of the obtained kitchen slurry is 10%.

5. The method for preparing photovoltaic panel dust removal gel based on multi-source solid waste fractionation and utilization according to claim 1, characterized in that: The solid waste is sludge, and step S1 specifically comprises: taking a certain amount of dilute sludge from a sewage treatment plant and placing it in a beaker, and obtaining a modified sludge slurry with a porous structure after irradiation in a microwave reactor.

6. The method for preparing the photovoltaic panel dust removal gel based on the quality-based utilization of multi-source solid waste according to claim 5, characterized in that: The moisture content of the sludge is 95-98%, and the microwave reaction time is 5-8 minutes.

7. The method for preparing the photovoltaic panel dust removal gel based on the quality-based utilization of multi-source solid waste according to claim 5, characterized in that: The temperature of the thermostatic magnetic stirrer in step S2 is 70° C. The AA used is 8.4% by weight of the slurry dry basis, MBA is 1.79% by weight of AA, APS is 1.19% by weight of AA, and Irgacure 2959 is 2.38% by weight of AA.

8. The method for preparing photovoltaic panel dust removal gel based on multi-source solid waste fractionation and utilization according to claim 1, characterized in that: In step S4, the gel liquid is brushed onto the photovoltaic panel and then cured under ultraviolet light for 2 h to form a gel layer.

Images