Method for purifying river water by using recycled aggregate

Abstract

The invention relates to a method for purifying river water by using recycled aggregate. The method comprises the following steps: step 1, presetting a base; 2, preparing a water purification module; waste red bricks in construction waste are selected and crushed and screened to prepare waste red brick particles with multiple particle sizes, the waste red brick particles with the same particle size are prepared into one water purification module, and the waste red brick particles with multiple particle sizes are prepared into multiple water purification modules; step 3, preparing a water purification wall; the water purification modules with the same particle size are mutually connected to form a water purification wall layer body, the water purification modules with multiple particle sizes respectively form multiple water purification wall layer bodies, the multiple water purification wall layer bodies are mutually connected and fixed to form a water purification wall, and the particle sizes of the waste red brick particles are sequentially reduced from the first water purification wall layer body to the last water purification wall layer body; fourthly, the water purification wall is installed; and 5, purifying the river water. According to the method, river water can be effectively purified, the river water purification cost can be reduced, and reduction, harmlessness and resource utilization of the construction waste are facilitated.

Description

Technical Field

[0001] The invention relates to the field of environmental protection water purification, and in particular to a method for purifying river water by utilizing recycled aggregates. Background Art

[0002] With the progress of industrialization and urbanization, the problem of river water pollution has become more and more serious. The existing technologies for river water purification include sedimentation, coagulation, filtration, biological treatment, etc. In recent years, with the development of membrane technology, membrane products and membrane components such as microfiltration membranes, ultrafiltration membranes, nanofiltration membranes and reverse osmosis membranes have also been applied to river water purification. However, membrane technology-related products are easily punctured by debris and leak during use, so they need to be replaced frequently, and they are expensive and costly. There is also a way to purify river water by recycled aggregates from construction waste in the existing technology. The recycled aggregates from construction waste are directly laid on the bottom of the river channel, and the water quality of the river channel is purified by the porous adsorption effect of the recycled aggregates. This method easily causes the recycled aggregates to be covered by the riverbed silt and lose the water purification effect. Therefore, it is necessary to frequently carry out large-scale riverbed desilting operations in order to replace and re-lay new recycled aggregates, which also leads to complex construction and high construction costs. The riverbed silt easily covers the recycled aggregates from construction waste laid at the bottom of the river channel, and the silt blocks the pores of the recycled aggregates themselves, causing the recycled aggregates to lose their adsorption and purification effects. Since recycled aggregates lose their purification effect, they need to be replaced frequently. When replacing recycled aggregates, the river channel needs to be dredged as a whole, the old aggregates need to be dug out and new aggregates need to be laid, which is complex and costly.

[0003] In view of this, the present invention provides a method for purifying river water using recycled aggregates, in which waste red brick particles and steel cages are used to form a water purification module and a water purification wall to purify river water, thereby solving the technical problems in the prior art that membrane technology products are easily damaged, leaked, and have high costs, and the technical problems that the direct laying method of recycled aggregates easily causes silt to clog the aggregate pores, requires frequent replacement, and is complex to construct and has high costs. Summary of the invention

[0004] The present invention is intended to provide a method for purifying river water using recycled aggregates to solve the deficiencies in the prior art. The technical problem to be solved by the present invention is achieved through the following technical solutions.

[0005] A method for purifying river water using recycled aggregates, the improvement of which is that it comprises the following steps:

[0006] Step 1: pre-set the base; set a base for installing the water purification wall at the bottom of the river channel of the river water to be purified;

[0007] Step 2, preparing a water purification module; selecting waste red bricks from construction waste, crushing and screening them to obtain waste red brick particles of various particle sizes, making the waste red brick particles of the same particle size into one water purification module, and making the waste red brick particles of various particle sizes into various water purification modules;

[0008] Step 3, preparing a water purification wall; connecting water purification modules of the same particle size to each other to form a layer of water purification wall, and water purification modules of different particle sizes to form multiple layers of water purification wall layers, and the multiple layers of water purification wall layers are connected and fixed to each other to form a water purification wall, and the particle size of the waste red brick particles decreases from the first layer of the water purification wall layer to the last layer of the water purification wall layer;

[0009] Step 4, installation of the water purification wall; install the water purification wall on the base and fix it to the base, fix the two ends of the water purification wall to the two sides of the river channel, the water purification wall is perpendicular to the flow direction of the river water, and the particle size of the waste red brick particles in each layer of the water purification wall decreases along the flow direction of the river water;

[0010] Step five, purifying river water; utilizing the porous structure of waste red brick particles to absorb pollutants in the river water, utilizing the particle size of the waste red brick particles to decrease along the flow direction of the river water so that the gaps between the waste red brick particles in each layer of the water purification wall also decrease successively, thereby filtering out large-sized impurities in the river water first and then filtering out small-sized impurities in the river water, thereby completing the purification of the river water.

[0011] Preferably, the base in step one is a concrete base, which is pre-set at a predetermined position of the river channel, and is provided with an anchoring structure for anchoring the water purification wall.

[0012] Preferably, the water purification module in step 2 is a steel cage filled with waste red brick particles.

[0013] Preferably, the steel cage is a square steel cage with a length, width and height of 1 m each, and the steel cage is welded with 10 mm stainless steel bars.

[0014] Preferably, the hole diameters of the steel cage are divided into four types, namely 1.5 mm, 4.5 mm, 9.5 mm, and 19.5 mm, which are respectively used to load waste red brick particles of different particle sizes to form water purification modules with different particle size specifications.

[0015] Preferably, the particle sizes of the waste red brick particles in step 2 are divided into four specifications, namely 2-5 mm, 5-10 mm, 10-20 mm, and 20-31.5 mm.

[0016] Preferably, the water purification wall in step three includes four layers of water purification wall layers, and the particle sizes of the waste red brick particles flowing along the river water into the four layers of water purification wall layers are 20-31.5mm, 10-20mm, 5-10mm, and 2-5mm respectively.

[0017] Preferably, in step three, adjacent water purification modules are connected to each other through anchor bolts and anchor connection rings located at the corners of the water purification modules to form a water purification wall layer, and adjacent water purification wall layers are connected to each other through anchor bolts and anchor connection rings located at the corners of the water purification modules to form a water purification wall.

[0018] Preferably, in step four, the water purification wall is fixedly connected to the base through anchor bolts and anchor connection rings located at the corners of the water purification module.

[0019] Preferably, in step four, the water purification wall is fixedly connected to the fixing rods located on both sides of the river channel through anchor bolts and anchor connection rings located at the corners of the water purification module, thereby achieving fixed connection with both sides of the river channel.

[0020] The present invention combines the filtering characteristics of membrane technology products and the adsorption and purification characteristics of recycled aggregates, crushes and screens the waste red bricks in the construction waste into particles of different particle sizes, and then uses steel cages to fill the waste red brick particles to make water purification modules and water purification walls. Because the red brick aggregate itself has a porous structure, it has a strong ability to adsorb dirt, so it can purify river water. At the same time, waste red brick particles of different particle sizes are used to form water purification wall layers with different gaps, so that large-size impurities in the river water are first filtered and then small-size impurities in the river water are filtered, thereby achieving a multi-stage purification effect. The water purification module is made by filling the waste red brick particles in the steel cage, so that the water purification module becomes an independent monomer. When a water purification module in the water purification wall needs to be replaced, the original water purification module can be directly removed and replaced. In the present invention, the water purification wall is perpendicular to the flow direction of the river water and perpendicular to the bottom of the river channel, and the pores of the waste red brick particles in the water purification module are not easily blocked by river bottom silt. Each water purification module is made of a steel cage filled with waste red brick particles. When the water purification capacity of a water purification module is reduced due to use and cannot meet the purification requirements, only the water purification module needs to be replaced. The construction is simple and the replacement cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Reference Figure 1 As shown, a method for purifying river water using recycled aggregates, the improvement of which is that it includes the following steps:

[0024] Step 1: pre-set the base; set a base for installing the water purification wall at the bottom of the river channel of the river water to be purified;

[0025] Step 2, preparing a water purification module; selecting waste red bricks from construction waste, crushing and screening them to obtain waste red brick particles of various particle sizes, making the waste red brick particles of the same particle size into one water purification module, and making the waste red brick particles of various particle sizes into various water purification modules;

[0026] Step 3, preparing a water purification wall; connecting water purification modules of the same particle size to each other to form a layer of water purification wall, and water purification modules of different particle sizes to form multiple layers of water purification wall layers, and the multiple layers of water purification wall layers are connected and fixed to each other to form a water purification wall, and the particle size of the waste red brick particles decreases from the first layer of the water purification wall layer to the last layer of the water purification wall layer;

[0027] Step 4, installation of the water purification wall; install the water purification wall on the base and fix it to the base, fix the two ends of the water purification wall to the two sides of the river channel, the water purification wall is perpendicular to the flow direction of the river water, and the particle size of the waste red brick particles in each layer of the water purification wall decreases along the flow direction of the river water;

[0028] Step five, purifying river water; utilizing the porous structure of waste red brick particles to absorb pollutants in the river water, utilizing the particle size of the waste red brick particles to decrease along the flow direction of the river water so that the gaps between the waste red brick particles in each layer of the water purification wall also decrease successively, thereby filtering out large-sized impurities in the river water first and then filtering out small-sized impurities in the river water, thereby completing the purification of the river water.

[0029] Furthermore, the base in step one is a concrete base, which is pre-set at a predetermined position of the river channel, and is provided with an anchoring structure for anchoring the water purification wall.

[0030] Furthermore, the water purification module in step 2 is a steel cage filled with waste red brick particles.

[0031] Furthermore, the steel cage is a square steel cage with a length, width and height of 1 m each, and the steel cage is welded with 10 mm stainless steel bars.

[0032] Furthermore, the hole diameters of the steel cage are divided into four types, namely 1.5 mm, 4.5 mm, 9.5 mm, and 19.5 mm, which are respectively used to fill waste red brick particles of different particle sizes to form water purification modules with different particle size specifications.

[0033] Furthermore, the particle sizes of the waste red brick particles in step 2 are divided into four specifications, namely 2-5 mm, 5-10 mm, 10-20 mm, and 20-31.5 mm.

[0034] Furthermore, the water purification wall in step three includes four layers of water purification wall layers, and the particle sizes of the waste red brick particles flowing along the river water into the four layers of water purification wall layers are 20-31.5mm, 10-20mm, 5-10mm, and 2-5mm respectively.

[0035] Furthermore, in step three, adjacent water purification modules are interconnected by anchor bolts and anchor connection rings located at the corners of the water purification modules to form a water purification wall layer, and adjacent water purification wall layers are interconnected by anchor bolts and anchor connection rings located at the corners of the water purification modules to form a water purification wall.

[0036] Furthermore, in step four, the water purification wall is fixedly connected to the base through anchor bolts and anchor connection rings located at the corners of the water purification module.

[0037] Furthermore, in step four, the water purification wall is fixedly connected to the fixing rods located on both sides of the river channel through anchor bolts and anchor connection rings located at the corners of the water purification module, thereby achieving fixed connection with both sides of the river channel.

[0038] This embodiment combines the filtering characteristics of membrane technology products and the adsorption and purification characteristics of recycled aggregates, crushes and screens the waste red bricks in the construction waste into particles of different particle sizes, and then uses steel cages to fill the waste red brick particles to make water purification modules and water purification walls. Because the red brick aggregate itself has a porous structure, it has a strong ability to adsorb dirt, which can play the role of purifying river water. At the same time, waste red brick particles of different particle sizes are used to form water purification wall layers with different gaps, so that large-size impurities in the river water are first filtered and then small-size impurities in the river water are filtered, thereby achieving a multi-stage purification effect. The water purification module is made by filling the waste red brick particles in the steel cage, so that the water purification module becomes a monomer. When a water purification module in the water purification wall needs to be replaced, the original water purification module can be directly removed and replaced. In this embodiment, the water purification wall is perpendicular to the flow direction of the river water and perpendicular to the bottom of the river channel, and the pores of the waste red brick particles in the water purification module are not easily blocked by riverbed silt. Each water purification module is made of a steel cage filled with waste red brick particles. When the water purification capacity of a water purification module is reduced due to use and cannot meet the purification requirements, only the water purification module needs to be replaced. The construction is simple and the replacement cost is low.

[0039] During the specific implementation of this embodiment, firstly, a solid concrete base is set at the corresponding position of the bottom of the river channel, and an anchoring structure for anchoring the water purification wall is set on the concrete base; secondly, the waste red bricks are crushed and the waste red brick particles are screened, and the waste red brick particles are divided into four specifications according to the particle size of 2-5mm, 5-10mm, 10-20mm, and 20-31.5mm, and stainless steel bars are used to make steel cages, and the apertures of the steel cages are 1.5mm, 4.5mm, 9.5mm, and 19.5mm, respectively. Anchoring connecting rings are set at the corners of the steel cages, and the waste red brick particles are filled into the steel cages with different apertures according to the particle size to make water purification modules with four particle size specifications; thirdly, a plurality of steel cages with an aperture of 19.5mm, i.e., waste red brick particles with a particle size of 19.5mm, are placed in a plurality of steel cages with an aperture of 19.5mm. The water purification module with a brick particle size of 20-31.5mm is connected by anchoring rings and anchor bolts to form a water purification wall layer. The water purification wall layers with 9.5mm, 4.5mm and 1.5mm aperture steel cages are formed in the same way along the river flow direction. The adjacent water purification wall layers are also connected and fixed by anchoring rings and anchor bolts to form a water purification wall. Finally, the water purification wall is hoisted on the concrete base and fixedly connected by anchoring rings and anchor bolts. The two ends of the water purification wall are also fixedly connected to the fixing rods on both sides of the river channel by anchoring rings and anchor bolts. The water purification modules at the top of the water purification wall are connected to each other by connecting rods, anchoring rings and anchor bolts to form a whole wall. The two ends of the connecting rods are fixedly connected to the fixing rods on both sides of the river channel. After the water purification wall is installed, the river water can be purified. The porous structure of waste red brick particles is used to absorb pollutants in the river water; along the flow of the river water, the particle size of the waste red brick particles gradually decreases, and the gaps in the water purification module also gradually decrease, so that large-sized impurities in the river water can be filtered first, and then small-sized impurities. The river water is purified through adsorption and multi-stage filtration. During use, if the pores of waste red brick particles in individual water purification modules are blocked and the water purification capacity is reduced, the water purification module can be quickly removed by loosening the corresponding anchor bolts and replaced with a new water purification module of the same type, which requires little workload and low cost. After cleaning, decontamination and other measures, the replaced water purification module can be used as a new water purification module after passing the test, and recycled to reduce the cost of water purification.

[0040] Compared with the membrane technology products in the prior art, the cost of this embodiment can be reduced by 90%; compared with the direct laying method of recycled aggregates from construction waste in the prior art, the pores of waste red brick particles are not easily blocked by riverbed silt, so there is no need to frequently desilt the river channel, and the water purification module is more convenient to replace. The water purification effect is also better than the direct laying method, and the cost is also low. This embodiment can not only effectively purify river water, but also reduce the cost of river water purification, and help reduce, harmlessly treat and recycle construction waste.

[0041] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0045] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0046] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for purifying river water using recycled aggregate, characterized in that: The following steps are involved: Step 1: pre-set the base; set a base for installing the water purification wall at the bottom of the river channel of the river water to be purified; Step 2, preparing a water purification module; selecting waste red bricks from construction waste, crushing and screening them to obtain waste red brick particles of various particle sizes, making the waste red brick particles of the same particle size into one water purification module, and making the waste red brick particles of various particle sizes into various water purification modules; Step 3, preparing a water purification wall; connecting water purification modules of the same particle size to each other to form a layer of water purification wall, and water purification modules of different particle sizes to form multiple layers of water purification wall layers, and the multiple layers of water purification wall layers are connected and fixed to each other to form a water purification wall, and the particle size of the waste red brick particles decreases from the first layer of the water purification wall layer to the last layer of the water purification wall layer; Step 4, installation of the water purification wall; install the water purification wall on the base and fix it to the base, fix the two ends of the water purification wall to the two sides of the river channel, the water purification wall is perpendicular to the flow direction of the river water, and the particle size of the waste red brick particles in each layer of the water purification wall decreases along the flow direction of the river water; Step five, purifying river water; utilizing the porous structure of waste red brick particles to absorb pollutants in the river water, utilizing the particle size of the waste red brick particles to decrease along the flow direction of the river water so that the gaps between the waste red brick particles in each layer of the water purification wall also decrease successively, thereby filtering out large-sized impurities in the river water first and then filtering out small-sized impurities in the river water, thereby completing the purification of the river water.

2. A method for purifying river water using recycled aggregate according to claim 1, characterized in that: The base in step one is a concrete base, which is pre-set at a predetermined position of the river channel, and is provided with an anchoring structure for anchoring the water purification wall.

3. The method for purifying river water using recycled aggregate according to claim 1, characterized in that: The water purification module in step 2 is a steel cage filled with waste red brick particles.

4. The method for purifying river water using recycled aggregate according to claim 3, characterized in that: The steel cage is a square steel cage with a length, width and height of 1 m each, and is welded with 10 mm stainless steel bars.

5. The method for purifying river water using recycled aggregate according to claim 3, characterized in that: The hole diameters of the steel cage are divided into four types, namely 1.5 mm, 4.5 mm, 9.5 mm, and 19.5 mm, which are respectively used to fill waste red brick particles of different particle sizes to form water purification modules with different particle size specifications.

6. The method for purifying river water using recycled aggregate according to claim 1, characterized in that: The particle sizes of the waste red brick particles in step 2 are divided into four specifications, namely 2-5 mm, 5-10 mm, 10-20 mm, and 20-31.5 mm.

7. The method for purifying river water using recycled aggregate according to claim 1, characterized in that: The water purification wall in step three includes four layers of water purification wall layers. The particle sizes of the waste red brick particles flowing into the four layers of water purification wall layers along the river water are 20-31.5mm, 10-20mm, 5-10mm, and 2-5mm respectively.

8. The method for purifying river water using recycled aggregate according to claim 1, characterized in that: In step three, adjacent water purification modules are connected to each other through anchor bolts and anchor connection rings located at the corners of the water purification modules to form a water purification wall layer, and adjacent water purification wall layers are connected to each other through anchor bolts and anchor connection rings located at the corners of the water purification modules to form a water purification wall.

9. The method for purifying river water using recycled aggregate according to claim 1, characterized in that: In step 4, the water purification wall is fixedly connected to the base through anchor bolts and anchor connection rings located at the corners of the water purification module.

10. The method for purifying river water using recycled aggregate according to claim 1, characterized in that: In step 4, the water purification wall is fixedly connected to the fixing rods located on both sides of the river channel through anchor bolts and anchor connection rings located at the corners of the water purification module, thereby achieving fixed connection with both sides of the river channel.

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