Acid rain total-analysis online monitoring system

Abstract

The invention discloses an acid rain total-analysis online monitoring system which comprises a rainwater collecting device, a rainwater measuring device, a rainwater sample reserving device, a pipeline cleaning device, a control device and a sample separating unit with a rainwater metering function. The sample separating unit with the rainwater metering function comprises a metering bottle; A main flow dividing pipe at the lower end of the metering bottle is communicated with a measuring groove of the pH value and conductivity measuring unit through a first flow dividing pipe, is communicated with the ion measuring unit through a second flow dividing pipe, is communicated with the rainwater sample reserving device through a third flow dividing pipe; the metering bottle comprises a 35cc metering bottle and a first positioning electrode detection bottle; and a reflux pipe communicated with the 35cc metering bottle is also arranged in the 260cc reserved sample temporary storage bottle of the rainwater sample reserving device. According to the acid rain total-analysis online monitoring system, the monitoring interference caused by corrosion or electrolysis of the positioning detection electrode can be avoided, monitoring interference caused by residual liquid in a container and a pipeline is reduced, and detection analysis deficiency when rainfall is insufficient is made up.

Description

technical field [0001] The invention relates to a monitoring system for acid rain. Background technique [0002] The invention application with publication number CN1763795A discloses an "acid rain automatic monitoring system", which consists of a central processing station and at least one monitoring sub-station connected through a communication network, and the central processing station includes at least one computer and central station control software, The monitoring sub-station is composed of an acid rain automatic monitoring device and a data acquisition device. The automatic monitoring device automatically senses the rainfall and completes the measurement of various indicators. The data acquisition device collects the data measured by the acid rain automatic monitoring device and processes it. The collected data is transmitted to the central station via the communication line. The technical solution of the invention application improves the heavy manual measurement ...

AI Technical Summary

Problems solved by technology

[0005] 1. Since the electrode of the rainwater quantitative bottle 31 for accurately measuring the amount of rainwater is soaked in the rainwater to be detected, and the general electrode material is metal, the corrosion or electrolysis of the electrode in the acid rainwater will cause the detection of the rainwater to be detected data interference;

[0006] 2. It controls several control valves respectively arranged on the pipeline through an editable program logic controller (PLC) to achieve automatic operation and analysis, and only when the rainfall above 35.34cc is collected per hour can the diversion be performed, so that The rainwater in the water storage bottle 32 flows into the first collection bottle 42, the second collection bottle 43 and the third collection bottle 44 via the sampling pipe 41. However, such a measurement method has no detection result when the rainfall is insufficient. The detection and analysis of acid rain There is a big gap;

[0007] Three, in order to reduce the impact of the previous residual rainwater on the latter measurement result, it will first make the measuring meter 52, the first collection bottle 42, the second collection bottle 43 and the third collection bottle 44 before the diversion action. The residual water is discharged and cleaned with pure water. However, due to the existence of water tension, there will be some residual pure water in the pipeline (including the catheter, measuring meter and collection bottle), which will inevitably affect the accuracy of the next test result.

[0008] Four, in order to collect and measure rainwater, it adopts rainwater quantitative bottle 31, water storage bottle 32, the first collecting bottle 42, the second collecting bottle 43, the third collecting bottle 44, complex structure, taking up space, longer pipeline increases Rainwater loss and residual disturbance

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