CN202362170U - Collecting and pre-treating instrument for rain water quality monitoring - Google Patents

Abstract

The utility model provides a collection and pretreatment instrument for rainwater quality monitoring, which at least includes a pretreatment device, a base and a rain collection device installed on the base. The rain collection device includes a rain collection plate, a shell, Glass tube A and rainwater collection box; the pre-treatment device is provided with 2 to 7, which are evenly distributed on the inner wall of the housing, and the upper part of the housing corresponding to the pre-treatment device is provided with a reagent input port, and the pre-treatment The device at least includes a reagent bottle, a sample bottle, a glass tube B, a glass tube C and a sample port. The glass tube B is located between the sample bottle and the glass tube A and is in communication with the two. Tube C is located between the reagent inlet and the sample bottle. The device can monitor rainfall intensity, temperature, pH, dissolved oxygen and other parameters in real time. At the same time, it can also complete the necessary pretreatment work such as filtration and acidification before the determination of various anions and cations and organic substances.

Description

Collection and pre-treatment instruments for rainwater quality monitoring

technical field

The utility model relates to a collection and pretreatment instrument for rainwater quality monitoring, in particular to a device capable of simultaneously collecting, monitoring and pretreatment of rainwater. the

Background technique

With the increasing scarcity of water resources, the use of rainwater has gradually attracted people's attention, and the methods of rainwater collection and utilization have been continuously proposed. The United States, Japan and other countries have carried out a lot of research and application on the recharge of groundwater by rainwater. The research on rainwater utilization in my country started relatively late, but as the hydrogeological problems caused by overexploitation of groundwater continue to intensify, the utilization of rainwater has attracted more and more attention from the society. The utilization of rainwater must first consider the composition characteristics of rainwater. Due to the discharge of industrial smoke and dust, rainwater has been seriously polluted, and the acidification of rainwater has brought serious consequences. In recent years, soil heavy metal pollution has been continuously detected. Some people think that the source pollution of soil heavy metals also has a great relationship with the quality of rainwater. Therefore, the research on the water quality of rainwater is of great significance. the

To conduct rainwater quality research, it is necessary to collect rainwater, and the collected rainwater must be pre-treated before it can be measured by instruments such as anions, cations, and organic matter. At present, there are no collection and pre-treatment devices for water quality monitoring on the market. Some of the existing devices can only collect rainwater, some can only measure rainfall intensity, and some can only measure simple parameters such as pH and temperature. Determination. To complete the collection and pretreatment of rainwater, a lot of complicated work must be carried out, which requires a lot of manpower. the

Contents of the invention

The utility model provides a collection and pretreatment instrument for rainwater quality monitoring, which solves the above-mentioned deficiencies in the prior art. It can monitor parameters such as rainfall intensity, temperature, pH, and dissolved oxygen in real time, and can also complete various Pre-treatment work such as filtration and acidification are necessary before the determination of various anions and cations and organic substances. the

The technical scheme adopted to realize the above-mentioned purpose of the utility model is:

A collection and pre-treatment instrument for rainwater quality monitoring, at least including a pre-treatment device, a base, and a rain collection device installed on the base, the rain collection device includes a rain collection plate, a housing, a glass tube A and a rainwater In the collection box, the rain collecting plate is funnel-shaped and located on the top of the rain collecting device. A dust-proof filter device is installed above the outlet of the rain collecting plate. The rainwater collecting box is located at the bottom of the cylindrical shell, and the glass tube A is connected to the Between the water outlet of the rain-collecting plate and the rainwater collection box, the rainwater is collected by the rain-collecting plate and flows into the rainwater collection box through the glass tube A; there are 2 to 7 pre-treatment devices, which are evenly distributed in the shell On the inner wall, there is a reagent input port above the corresponding part of the pre-processing device. The pre-processing device includes at least a reagent bottle, a sample bottle, glass tube B, glass tube C and a sample port. The glass tube B is located on the sample Between the bottle and the glass tube A and communicated with both, the reagent bottle is located on the glass tube C, the glass tube C is located between the reagent injection port and the sample bottle, the sample port is located at the bottom of the sample bottle and is drawn out from the shell body. the

Glass tube A, glass tube B, glass tube C and the sample port are all equipped with water-stop clips, wherein the water-stop clip on glass tube A is located below the connection between glass tube A and glass tube B, and the water-stop clip on glass tube C The water-stop clip is located under the reagent bottle. the

The dust-proof filter device includes a dust-proof cover and a filter box, the dust-proof cover is covered on the water outlet of the rain-collecting plate in the shape of a pot lid, and the filter box is ring-shaped and located between the edge of the rain-collecting plate and the dust-proof cover , The filter box is connected and fixed with the dust cover through the piston. the

A monitoring device is provided in the housing, and the monitoring device includes a flowmeter, a monitoring bottle, an electrode and a multi-parameter instrument connected with the electrode through a wire. The flowmeter is installed on the water outlet of the rain collecting plate, and the outlet of the rain collecting plate The bottom end of the nozzle leads to the monitoring bottle, and the part where the bottom of the monitoring bottle communicates with the glass tube A is provided with a partition, and the electrodes are located in the monitoring bottle. the

The upper part of the rainwater collection box is provided with a drainage port, and the bottom of the rainwater collection box is provided with a rainwater sampling port; the upper part of the rainwater collection plate is provided with a windshield; of the overflow. the

The base is divided into two layers, wherein the lower layer is fixed by a fixing screw, and the upper layer is installed on the lower layer by a lifting screw and can be lifted up and down on the lower layer. the

The collection and pretreatment instrument for rainwater quality monitoring provided by the utility model has the following advantages: first, it can monitor parameters such as rainfall intensity, temperature, pH, and dissolved oxygen in real time; Filtration, acidification and other pretreatment work before measurement. At the same time, various reagents can be flexibly added according to the preservation methods of different samples, which has a wide range of application value and continuous development functions. The device can be widely used in various hydrogeological and environmental geological problems such as rainwater quality monitoring and rainwater composition analysis, and is of great significance to the study of rainwater utilization. the

Description of drawings

Fig. 1 is used for the collection of rainwater quality monitoring provided by the utility model and the structural representation of the pretreatment instrument;

In the figure: 1-rain collecting plate, 2-housing, 3-base, 4-windshield, 5-dust cover, 6-filter box, 7-piston, 8-flow meter, 9-monitoring bottle, 10 -Separator, 11-electrode, 12-wire, 13-multiparameter, 14-reagent inlet, 15-glass tube B, 16-reagent bottle, 17-glass tube C, 18-water stop clamp, 19-test Sample bottle, 20-overflow port, 21-sampling port, 22-glass tube A, 23-rainwater collection box, 24-rainwater sampling port, 25-drainage port, 26-lifting screw, 27-fixing screw. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail. the

The structure of the collection and pretreatment instrument used for rainwater quality monitoring provided by the utility model is shown in Figure 1. It is composed of a rain collection device, a base 3, a pretreatment device and a monitoring device. The rain collection device is installed on the base 3, and the base 3 is divided into two layers, wherein the lower layer is fixed by the fixed screw rod 27, and the upper layer is installed on the lower layer by the lifting screw rod 26 and can be lifted on the lower layer. The rain collecting device includes a rain collecting plate 1, a housing 2, a glass tube A22 and a rainwater collecting box 23. The rain collecting plate 1 is funnel-shaped and is located on the top of the rain collecting device. A windshield is arranged above the rain collecting plate 1. The plate 4 is provided with a dust-proof filtering device above the water outlet of the rain collecting plate 1. The rainwater collection box 23 is located at the bottom of the cylindrical housing 2, and the glass tube A22 is connected between the outlet of the rainwater collection plate 1 and the rainwater collection box 23, and the rainwater is collected by the rainwater collection plate 1 and flows into the rainwater collection through the glass tube A22. In the box 23, the top of the rainwater collection box 23 is provided with a drain outlet 25, and the bottom of the rainwater collection box 23 has a rainwater sampling port 24. The dustproof filter device includes a dustproof cover 5 and a filter box 6. The dustproof cover 5 is covered on the water outlet of the rain collecting plate 1 in the shape of a pot cover. The filter box 6 is annular and is located on the rain collecting plate 1 and the dust cover 5. Between the edges, the filter box 6 is connected and fixed with the dust cover 5 through the piston 7 . the

There are 2 to 7 pre-processing devices, which are evenly distributed on the inner wall of the housing 2. A reagent input port 14 is provided above the corresponding housing part of the pre-processing device, and a sliding door is arranged on the reagent input port 14. The processing device at least includes a reagent bottle 16, a sample bottle 19, a glass tube B15, a glass tube C17, and a sample port 21. The glass tube B15 is located between the sample bottle 19 and the glass tube A22 and communicates with both, and the reagent bottle 16 is located at On the glass tube C17, the glass tube C17 is located between the reagent injection port 14 and the sample bottle 19, the sample receiving port 21 is located at the bottom of the sample bottle 19 and leads out of the housing 2 from the housing, and the upper part of the sample bottle 19 is also provided with a Lead to the overflow port 20 outside the shell. Glass tube A22, glass tube B15, glass tube C17 and sample port 21 are all equipped with water-stop clips 18, wherein the water-stop clip 18 on glass tube A22 is located below the connection between glass tube A and glass tube B, and the glass tube The water stop clip on the tube C17 is located under the reagent bottle 16. the

The monitoring device is installed in the housing 2. The detection device includes a flowmeter 8, a monitoring bottle 9, an electrode 11, and a multi-parameter instrument 13 connected to the electrode 11 through a wire 12. The flowmeter 8 is installed at the water outlet of the rain collecting plate 1. Above, the bottom of the water outlet of the rain collecting plate 1 leads to the monitoring bottle 9, and the bottom of the monitoring bottle 9 communicates with the glass tube A22. the

The working principle of the rainwater quality monitoring collection and pretreatment instrument provided by the utility model is as follows: the device uses the windshield to keep out the wind and rain to ensure that the rain collecting area is always fixed, so that the flow meter can be used to measure The flow rate is used to calculate the rainfall intensity. The dust cover can stop dust etc. from polluting the rainwater, and various filter materials can be loaded into the filter box below the dust cover. After the rainwater enters the monitoring bottle, under the shunt action of the partition, the rainwater on one side is continuously updated. Therefore, the electrodes always measure real-time parameters and can be read by the multi-parameter instrument. When it is necessary to pre-treat the rainwater, firstly control the water stop clamp on the glass tube A to sample, that is, first turn off the switch of the water stop clamp, and turn on the switch of the water stop clamp on the glass tube B connected to a certain sample bottle , can be sampled, by filling different reagents into the reagent bottles, so as to control the use of samples in each sample bottle. the

The following example illustrates its specific working steps:

(1) Flushing device: first close the water-stop clamp on the glass tube A, open the other water-stop clamps, then pour deionized water on the dust cover, and then open the water-stop clamp on the glass tube A after a period of time. Continue to sprinkle deionized water. the

(2) Install filter material: open the dust cover, put filter material into the filter box, put activated carbon in this test, and then cover the dust cover. the

(3) Installing the device: install the device at the sampling site, tighten the fixing screw to fix the device on the ground, and then adjust the lifting screw to make the windshield parallel to the raining direction. the

(4) Adding reagents: In this experiment, only cations, nitrite and sulfate were measured, so three pre-treatment devices were selected, and the water-stop clips at the lower ends of the reagent bottles of the three pre-treatment devices were closed. Add concentrated nitric acid to the reagent bottle of one of the pretreatment devices through the reagent inlet for pretreatment of the sample for cation determination, and add chloroform to the reagent bottle of a pretreatment device for the sample of nitrite determination. Pretreatment, the reagent bottle of another pretreatment device does not add anything, and is used for pretreatment of the experiment of sulfate radical determination. the

(5) Monitoring and sampling: after the measurement starts, first close the water-stop clamp of glass tube A, open the water-stop clamp on glass tube B on the three pretreatment devices selected in step (4), and close the water-stop clamp at the lower end of the sample bottle. Water-stop clamp, close the water-stop clamp on glass tube B when water starts to flow from the overflow port, slightly open the water-stop clamp at the lower end of the reagent bottle and drop a few drops of reagent into the sample bottle, then open the water-stop clamp at the lower end of glass tube A, Sampling is done through the sampling port and the rainwater sampling port. During the sampling process, the data on the flowmeter and multi-parameter instrument can be read at any time, so as to obtain the rainfall intensity during the rainfall process and the pH, temperature, dissolved oxygen and other parameters of the rainwater. the

Claims (8)

1. A collection and pretreatment instrument for rainwater quality monitoring, characterized in that: at least include a pretreatment device, a base and a rain collection device installed on the base, and the rain collection device includes a rain collection plate, a housing , glass tube A and rainwater collecting box, the rain collecting plate is funnel-shaped and located on the top of the rain collecting device, the top of the water outlet of the rain collecting plate is provided with a dust-proof filter device, and the rain collecting box is located at the bottom of the cylindrical shell , the glass tube A is connected between the water outlet of the rain collecting plate and the rainwater collecting box, and the rainwater is collected by the rain collecting plate and flows into the rainwater collecting box through the glass tube A; the pre-treatment device is provided with 2 to 7, uniform are distributed on the inner wall of the housing, and the upper part of the housing corresponding to the pre-processing device is equipped with a reagent input port. The pre-processing device includes at least a reagent bottle, a sample bottle, glass tube B, glass tube C and a sample port. Glass tube B is located between the sample bottle and glass tube A and communicates with both, the reagent bottle is located on the glass tube C, glass tube C is located between the reagent injection port and the sample bottle, and the sampling port is located at the bottom of the sample bottle And the casing is drawn out from the casing. 2. The collection and pretreatment instrument for rainwater quality monitoring according to claim 1, characterized in that: glass tube A, glass tube B, glass tube C and the sample port are all provided with water stop clips, wherein the glass tube The water-stop clamp on A is located below the connection between glass tube A and glass tube B, and the water-stop clamp on glass tube C is located below the reagent bottle. 3. The collection and pre-treatment instrument for rainwater quality monitoring according to claim 1, characterized in that: the dust-proof filter device comprises a dust-proof cover and a filter box, and the dust-proof cover is covered in the shape of a pot cover On the water outlet of the rain plate, the filter box is annular and is located between the edge of the rain collecting plate and the dust cover, and the filter box is connected and fixed with the dust cover through the piston. 4. The collection and pretreatment instrument for rainwater quality monitoring according to claim 1, characterized in that: a monitoring device is provided in the housing, and the monitoring device includes a flow meter, a monitoring bottle, an electrode, and an electrode between the electrodes. The multi-parameter instrument connected by wires, the flowmeter is installed on the water outlet of the rain collecting plate, the bottom of the water outlet of the rain collecting plate leads to the monitoring bottle, and the bottom of the monitoring bottle communicates with the glass tube A. There is a partition , the electrodes are located in the monitoring bottle. 5. The collection and pretreatment instrument for rainwater quality monitoring according to claim 1, characterized in that: the upper part of the rainwater collection box is provided with a drain outlet, and the bottom of the rainwater collection box is provided with a rainwater sampling port. 6. The collection and pre-treatment instrument for rainwater quality monitoring according to claim 1, characterized in that: a windshield is provided above the rain-collecting plate. 7. The collection and pretreatment instrument for rainwater quality monitoring according to claim 1, characterized in that: the reagent input port is provided with a sliding door, and the upper part of the sample bottle is provided with an overflow port leading to the outside of the housing. 8. The collection and pretreatment instrument for rainwater quality monitoring according to claim 1, characterized in that: the base is divided into two layers, wherein the lower layer is fixed by a fixing screw, and the upper layer is installed on the lower layer by a lifting screw and Able to ascend and descend on the lower level. the

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