Device and method for automatic sampling and monitoring of rainstorm runoff

Abstract

The invention discloses an automatic rainstorm runoff sampling and monitoring device and an automatic rainstorm runoff sampling method. The automatic rainstorm runoff sampling and monitoring device comprises a base, a power supply, and a rainfall collector, a flow monitor, a signal transceiving and data storage device and a water sample collecting, sealing and storing integrated device which are mounted on the base and connected with the power supply, and a sampling bottle turnplate system connected to the upper side of the water sample collecting, sealing and storing integrated device. Through use of the automatic rainstorm runoff sampling and monitoring device, automatic collection, monitoring and storage of a runoff water sample in the field can be achieved. Through the automatic watersample collecting, sealing and storing integrated device, the sealing and storage problems of the water sample are solved; through the rainfall monitor and the flow monitor, device opening is achievedon the basis of the rain intensity, and during collection and monitoring, the function of collecting more rainwater at a large flow, collecting less rainwater at a small flow is achieved; through a water quality monitoring probe, the function of monitoring physical indexes of the water quality while the water sample is collected is achieved.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to the technical field of runoff water sample collection and detection, in particular to an automatic sampling and monitoring device and method for rainstorm runoff. Background technique [0002] Rainstorm runoff pollution is a major form of non-point source pollution. It usually refers to the surface runoff pollution accompanying the precipitation process. Specifically, it refers to the dissolved or solid pollutants leaching from non-specific locations in precipitation and runoff erosion. Under the action of runoff, it flows into the receiving water body and causes water pollution. As point source pollution is gradually controlled, the hazards of non-point source pollution are gradually highlighted. Relevant departments have invested a lot of manpower and material resources in research on storm runoff pollution. [0003] The original storm runoff pollution fi...

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Problems solved by technology

[0005] The original method of manual collection of rainstorm runoff is labor-intensive and not conducive to the collection of runoff under severe weather conditions. In addition, manual collection will have a great impact on sampling time and water sample quality.

[0006] The existing automatic runoff collection device has exposed the following deficiencies: 1) The water sample is not sealed after collection, which will cause foreign matter to enter and affect the later water quality index test results; 2) Rainstorm runoff collection requires a period of monitoring time. Internally, the existing runoff automatic devices expose the collected water samples to the temperature of the outside world, and do not properly preserve the collected water samples; 3) The collection of rainstorm runoff requires multiple bottles, sometimes even dozens of bottles. None of the current automatic runoff collection devices has numbered the water sample collection bottles, which is likely to cause confusion between the water sample collection bottles and the collection time in the later stage; 4) The existing automatic runoff collection devices mostly use manual opening or rainwater trigger devices to start monitoring. During the process, water samples are often collected at equal intervals, but the influence of river flow on the monitoring results is not considered, and the principle of collecting more when the flow is large and less when the flow is small is not realized; 5) The existing automatic runoff collection devices only focus on The collection of water samples, while ignoring the monitoring of water quality physical indicators in water samples

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