Water quality purification experimental device capable of being applied to research on multi-parameter influence under low-temperature condition

Abstract

The utility model relates to a water quality purification experimental device capable of being applied to research on multi-parameter influence under a low-temperature condition. The water quality purification experimental device comprises an external low-temperature reaction water tank, a connecting pipe, a flow pump, a flow adjusting device, a flow meter, a columnar matrix packed column and a temperature measuring device, wherein the external low-temperature reaction water tank provides a low-temperature environment required by an experiment. A clamping groove is formed in the external low-temperature reaction water tank and sequentially connected with a flow pump, a flow adjusting device, a flow meter and a columnar matrix packed column through connecting pipes to form a set of independent closed-loop circulation system. The water quality purification experimental device disclosed by the utility model can be used for researching multiple parameters such as water flow, selection and proportion of water purification materials, selection of aquatic plants and the like in a low-temperature environment, so that relatively comprehensive data support is provided for the design of a constructed wetland sewage treatment system. The device provided by the utility model can also provide a plurality of groups of closed-loop circulating systems at the same time, so that the experiment efficiency is improved, and the error between contrast experiments is reduced.

Description

Technical Field

[0001] The utility model relates to a water purification experimental device, in particular to a water purification experimental device which can be used to study the influence of multiple parameters under low temperature conditions. Background Art

[0002] Constructed wetland technology primarily utilizes the synergistic physical, chemical, and biological effects of a substrate, aquatic plants, and microorganisms to treat various types of industrial wastewater, domestic sewage, and rainwater. Compared to traditional sewage treatment plants, it offers significant advantages, including reduced investment and operating costs. In my country, due to the large number of small and medium-sized towns, dense populations, and limited funding and technology, the development of large-scale sewage treatment plants is difficult. Therefore, constructed wetland technology holds broad application prospects in my country.

[0003] Parameters that influence the purification effectiveness of constructed wetland wastewater treatment systems include temperature, aquatic plant species, microbial species, water flow rate, and the choice of water purification materials. Currently, most indoor controlled experiments on water purification using constructed wetland technology are conducted at room temperature. However, my country is a vast country, with many areas located at high latitudes and experiencing lower temperatures during winter. Research on the effects of parameters such as water flow, water purification materials, and aquatic plants on water quality improvement in low-temperature environments is particularly lacking.

[0004] Moreover, most existing water purification experimental devices can usually only conduct one water purification experiment at a time. Not only is the experimental efficiency low, but when conducting multiple sets of comparative experiments, experimental errors may occur due to changes in ambient temperature, and even the experimental data cannot be compared and analyzed. Summary of the Invention

[0005] In order to overcome the defects of the existing technology, the utility model proposes a water purification experimental device that can be used to study the influence of multiple parameters under low temperature conditions. It dynamically simulates the water purification process of the artificial wetland sewage treatment system under simulated winter low temperature environment conditions, conducts multiple groups of experiments in real time, observes and analyzes the influence of various parameters on the water quality improvement effect, thereby providing data support for the design of the artificial wetland sewage treatment system and effectively solving the problems in the background technology.

[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0007] A water purification experimental device applicable to studying the influence of multiple parameters under low-temperature conditions comprises an external low-temperature reaction water tank, a first connecting pipe, a flow pump, a flow regulating device, a flow meter, a columnar matrix-filled column, a second connecting pipe, and a temperature measuring device. The external low-temperature reaction water tank contains an ice-salt eutectic system. Vertical partitions are provided within the external low-temperature reaction water tank to divide the external low-temperature reaction water tank into multiple units. Each unit is provided with a rectangular slot with an upper opening, the slot being positioned within the ice-salt eutectic system. One end of the first connecting pipe is inserted into the slot, and the other end of the first connecting pipe is connected to the top of the columnar matrix-filled column. The flow pump, the flow regulating device, and the flow meter are sequentially provided on the first connecting pipe from the slot to the columnar matrix-filled column. The bottom of the columnar matrix-filled column is connected to one end of the second connecting pipe, the other end of the second connecting pipe being inserted into the slot to form a set of independent closed-circuit loops. The number of independent closed-circuit loops matches the number of units. A temperature measuring device is also provided on the inner wall of the external low-temperature reaction water tank.

[0008] Preferably, the number of the partitions is 1-5.

[0009] Furthermore, both ends of the partition are connected to the inner wall of the external low-temperature reaction water tank, and a space is left between the bottom end of the partition and the bottom of the external low-temperature reaction water tank, so that the units remain connected.

[0010] Furthermore, a hanging filter device is arranged in the slot, and the hanging filter device is a box structure with an open upper end. The wall and bottom of the hanging filter device are provided with a through hole I, and the upper end of the wall of one side of the hanging filter device is provided with a hanging ear I. The hanging filter device is fixed to the inner wall of the slot through the hanging ear I, and one end of the first connecting pipe is inserted into the hanging filter device.

[0011] Furthermore, the inner wall and bottom of the suspended filter device are provided with filter media.

[0012] Furthermore, a hanging partition is provided at the bottom of the slot. The hanging partition is a flat plate with a through hole II having an area slightly smaller than the cross-section of the slot. The hanging partition is suspended inside the slot through the hanging ears II on both sides. The hanging partition and the bottom of the slot form a water collection space. A microbial medium layer and an aquatic plant layer are provided in sequence from the hanging partition upwards. The other end of the second connecting pipe is inserted into the water collection space below the hanging partition.

[0013] Preferably, the flow pump is a peristaltic pump.

[0014] Preferably, the external low-temperature reaction water tank, the card slot and / or the columnar matrix filling column are made of a transparent acrylic material.

[0015] Furthermore, one or more of ceramsite, gravel, rice straw, zeolite, steel slag, fly ash, activated carbon, anthracite, limestone, and quartz particles are provided in the columnar matrix filling column.

[0016] The beneficial effects of the utility model are:

[0017] (1) The water purification experimental device of the present invention is provided with an external low-temperature reaction water tank. A low-temperature experimental environment is created by configuring an ice and salt eutectic system in the external low-temperature reaction water tank. That is, an ice-salt bath is used in the external low-temperature reaction water tank to achieve uniform and stable refrigeration. Moreover, by adjusting the ratio of ice and different types of salt, low-temperature environments of different temperatures can be simulated. Since the low-temperature environment is provided by the eutectic system, the temperature of the simulated environment is constant, ensuring the accuracy of the experimental data.

[0018] (2) A partition is vertically arranged in the external low-temperature reaction water tank to divide the external low-temperature reaction water tank into multiple units. A space is left between the bottom end of the partition and the bottom of the external low-temperature reaction water tank so that the units remain connected, thereby ensuring that the experimental environment temperature of each group remains consistent when multiple groups of comparative experiments are carried out at the same time.

[0019] (3) The water purification experimental device of the present invention can adjust the water flow rate in the pipeline by autonomously regulating the water inlet flow control valve, and its flow value can be read in the flow meter. In this way, the water body can have a certain flow rate to avoid the water body freezing affecting the experimental operation, and the water flow rate can be adjusted by adjusting the water inlet flow control valve, thereby studying the influence of the water flow change on the water quality improvement effect.

[0020] (4) A hanging filter device is set in the card slot. The device has a simple structure and is easy to install. After the experimental sewage is filtered by the hanging filter device, it will not be blocked when circulating in the system. In addition, water samples need to be collected regularly during the experiment. Sampling from the filter device can avoid the influence of impurities on the analysis results.

[0021] (5) The water purification experimental device of the present invention can carry out multiple groups of experiments at the same time, which improves the experimental efficiency and reduces the error between comparative experiments.

[0022] (6) The water purification experimental device of the present invention can study a number of parameters such as water flow, selection and proportion of water purification materials, and selection of aquatic plants, thereby providing more comprehensive data support for the design of artificial wetland sewage treatment systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the process and structure of the water purification experimental device of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the suspended filter device in the present utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the suspended partition in the utility model; DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

[0028] like Figures 1 to 3 As shown, a water purification experimental device suitable for studying the influence of multiple parameters under low-temperature conditions includes an external low-temperature reaction water tank 1, a first connecting pipe 2, a flow pump 3, a flow regulating device 4, a flow meter 5, a columnar matrix filling column 6, a second connecting pipe 7, and a temperature measuring device 8. The external low-temperature reaction water tank 1 is filled with an ice and salt eutectic system 20. This creates a low-temperature experimental environment within the external low-temperature reaction water tank 1, and the ratio of ice to different types of salt can be adjusted to simulate different low-temperature environments. Because the low-temperature environment is provided by the ice and salt eutectic system 20, the temperature of the simulated environment is constant, ensuring the accuracy of the experimental data.

[0029] A vertical partition 9 is installed within the external low-temperature reaction water tank 1, dividing it into multiple cells. Each cell is equipped with a rectangular slot 10 with an open top, located within an ice-salt eutectic 20. One end of a first connecting tube 2 is inserted into the slot 10, and the other end of the first connecting tube 2 is connected to the top of a columnar matrix-filled column 6. A flow pump 3, a flow regulator 4, and a flow meter 5 are sequentially arranged on the first connecting tube 2 from the slot 10 to the columnar matrix-filled column 6. The bottom of the columnar matrix-filled column 6 is connected to one end of a second connecting tube 7, the other end of which is inserted into the slot 10, forming a set of independent closed-circuit loops. The number of independent closed-circuit loops matches the number of cells. Therefore, this experimental device can conduct multiple experiments simultaneously, improving experimental efficiency and reducing errors between comparative experiments. A temperature measuring device 8 is also provided on the inner wall of the external low-temperature reaction water tank 1 to measure the temperature of the simulated environment.

[0030] Preferably, the number of baffles is 1-5. In this embodiment, there are two baffles 9, which divide the external low-temperature reaction water tank 1 into three cells. Each cell is equipped with a rectangular slot 10 with an open top, for a total of three independent slots 10. Each slot 10 is connected to the top of the columnar matrix-filled column 6 via a first connecting pipe 2. A flow pump 3, a flow regulator 4, and a flow meter 5 are sequentially arranged on the first connecting pipe 2, from the slot 10 to the columnar matrix-filled column 6, along the direction of water flow. The bottom of the columnar matrix-filled column 6 is connected to the interior of the slot 10 via a second connecting pipe 7, forming an independent closed-circuit loop. In this embodiment, a total of three identical independent closed-circuit loop systems can be used to conduct three experiments simultaneously.

[0031] Furthermore, the ends of the partition 9 are connected to the inner wall of the external low-temperature reaction water tank 1, and a space is left between the bottom end of the partition 9 and the bottom of the external low-temperature reaction water tank 1 to maintain communication between the units. This ensures that the external ambient temperature of the three slots 10 remains the same, avoiding the impact of different external ambient temperatures during the experiment.

[0032] Furthermore, a suspended filter device 11 is disposed within the slot 10. The suspended filter device 11 is a box-shaped structure with an open top. Through holes 12 are provided on the walls and bottom of the suspended filter device 11, and filter media 14 are provided on the inner walls and bottom of the suspended filter device 11. A hanging ear 13 is provided at the upper end of one side wall of the suspended filter device. The suspended filter device 11 is secured to the inner wall of the slot 10 via the hanging ear 13, and one end of the first connecting pipe 2 is inserted into the suspended filter device 11. The suspended filter device 11 has a simple structure and is easy to install. After the experimental wastewater is filtered by the suspended filter device 11, it circulates in the system without clogging. Furthermore, water samples need to be collected regularly during the experiment, and sampling from the suspended filter device 11 can prevent impurities from affecting the analytical results.

[0033] Furthermore, a hanging partition 15 is provided at the lower part of the card slot 10. The hanging partition 15 is a flat plate with an area slightly smaller than the cross-section of the card slot 10 and provided with a through hole Ⅱ 16. The hanging partition 15 is suspended inside the card slot 10 through the hanging ears Ⅱ 17 on both sides. The hanging partition 15 and the bottom of the card slot 10 form a water collection space. A microbial medium layer 18 and an aquatic plant layer 19 are provided in sequence from the hanging partition 15 upwards. The other end of the second connecting pipe 7 is inserted into the water collection space below the hanging partition 15.

[0034] In this embodiment, the flow pump 3 is preferably a peristaltic pump.

[0035] Preferably, the external low-temperature reaction water tank 1, the card slot 10, and / or the columnar matrix filling column 6 are made of a transparent material. In this embodiment, the external low-temperature reaction water tank 1, the card slot 10, and the columnar matrix filling column 6 are all made of a transparent acrylic material, which facilitates observation of the experimental process.

[0036] Furthermore, one or more of ceramsite, gravel, rice straw, zeolite, steel slag, fly ash, activated carbon, anthracite, limestone, and quartz particles are provided in the columnar matrix filling column 6 .

[0037] The method of using this experimental device is as follows:

[0038] First, according to the experimental environment temperature requirements, prepare the ice and salt eutectic system, and then pour it into the external low-temperature reaction water tank 1 to simulate the low-temperature environment required for the experiment. Second, according to the experimental parameters, assemble and set the hanging partition 15 in the slot 10, the microbial medium layer, the aquatic plant layer, the experimental matrix in the columnar matrix filling column 6, and the hanging filter device in sequence. Finally, according to the experimental parameters, Figure 1 The process shown connects various devices and instruments in sequence to form an independent closed-loop circulation system.

[0039] During the experiment, equal amounts of experimental water required for water purification are poured into the various slots of the external low-temperature reaction water tank 1. The peristaltic pump is turned on and the flow control device is adjusted to the required flow rate according to the experimental parameters, and the system begins to circulate. By autonomously controlling the water inlet flow control valve, the water flow in the pipeline can be adjusted, and the flow rate value can be read on the flow meter. This method can maintain a certain flow rate to prevent the water from freezing and affecting the experimental operation. The water flow can also be adjusted by adjusting the water inlet flow control valve to study the impact of water flow changes on water quality improvement.

[0040] The experimental devices in the embodiment are all made of transparent acrylic material, so the changes in the circulation system can be observed at any time during the experiment. According to the set time, relevant parameters are recorded regularly and water samples are collected for analysis to finally obtain the experimental results of its water purification.

Claims

1. A water purification experimental device that can be used to study the influence of multiple parameters under low temperature conditions, characterized by: The invention comprises an external low-temperature reaction water tank, a first connecting pipe, a flow pump, a flow regulating device, a flow meter, a columnar matrix filling column, a second connecting pipe, and a temperature measuring device. The external low-temperature reaction water tank contains an ice and salt eutectic system. A partition is vertically arranged in the external low-temperature reaction water tank to divide the external low-temperature reaction water tank into multiple units. Each unit is provided with a rectangular slot with an upper opening, the slot being placed in the ice and salt eutectic system. One end of the first connecting pipe is inserted into the slot, and the other end of the first connecting pipe is connected to the top of the columnar matrix filling column. A flow pump, a flow regulating device, and a flow meter are sequentially arranged on the first connecting pipe from the slot to the columnar matrix filling column. The bottom of the columnar matrix filling column is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is inserted into the slot to form a set of independent closed-circuit loops. The number of independent closed-circuit loops matches the number of units. A temperature measuring device is also provided on the inner wall of the external low-temperature reaction water tank.

2. A water purification experimental device applicable to studying the influence of multiple parameters under low temperature conditions as claimed in claim 1, characterized in that: The number of the partitions is 1-5.

3. A water purification experimental device applicable to studying the influence of multiple parameters under low temperature conditions according to claim 1 or 2, characterized in that: The two ends of the partition are connected to the inner wall of the external low-temperature reaction water tank, and a space is left between the bottom end of the partition and the bottom of the external low-temperature reaction water tank so that the units are kept in communication.

4. A water purification experimental device applicable to studying the influence of multiple parameters under low temperature conditions as claimed in claim 3, characterized in that: A hanging filter device is arranged in the slot. The hanging filter device is a box structure with an open upper end. The wall and bottom of the hanging filter device are provided with a through hole I. The upper end of the wall of one side of the hanging filter device is provided with a hanging ear I. The hanging filter device is fixed to the inner wall of the slot through the hanging ear I, and one end of the first connecting pipe is inserted into the hanging filter device.

5. A water purification experimental device applicable to studying the influence of multiple parameters under low temperature conditions as claimed in claim 4, characterized in that: The inner wall and bottom of the suspended filter device are provided with filter media.

6. A water purification experimental device applicable to studying the influence of multiple parameters under low temperature conditions as claimed in claim 5, characterized in that: A hanging partition is also provided at the bottom of the slot. The hanging partition is a flat plate with a through hole II having an area slightly smaller than the cross-section of the slot. The hanging partition is suspended inside the slot through the hanging ears II on both sides. The hanging partition and the bottom of the slot form a water collection space. A microbial medium layer and an aquatic plant layer are provided in sequence from the hanging partition upwards. The other end of the second connecting pipe is inserted into the water collection space below the hanging partition.

7. A water purification experimental device applicable to studying the influence of multiple parameters under low temperature conditions as claimed in claim 6, characterized in that: The flow pump is a peristaltic pump.

8. The water purification experimental device applicable to studying the influence of multiple parameters under low temperature conditions according to claim 7, characterized in that: The material of the external low-temperature reaction water tank, the card slot and / or the columnar matrix filling column is a transparent acrylic material.

9. The water purification experimental device applicable to studying the influence of multiple parameters under low temperature conditions according to claim 8, characterized in that: The columnar matrix filling column is provided with one or more of ceramsite, gravel, rice straw, zeolite, steel slag, fly ash, activated carbon, anthracite, limestone and quartz particles.

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