A 3D Sampling Method for Simulation of River Pollutant Transport

A pollutant and three-dimensional technology, applied in the field of environmental water conservancy engineering research, can solve problems such as large volume and flow field disturbance, and achieve the effect of overcoming time difference and ensuring representativeness and authenticity

Active Publication Date: 2017-11-10
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, the traditional sampling device has a large volume. During the sampling process, the instrument must be placed underwater, which may cause a large disturbance to the flow field at the sampling location.

Method used

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  • A 3D Sampling Method for Simulation of River Pollutant Transport
  • A 3D Sampling Method for Simulation of River Pollutant Transport
  • A 3D Sampling Method for Simulation of River Pollutant Transport

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Embodiment Construction

[0021] The present invention will be further elaborated below in combination with specific embodiments and accompanying drawings.

[0022] Taking the ammonia nitrogen diffusion test of Longwangtang Reservoir as an example, the specific steps of implementing the three-dimensional sampling device for river pollutant transport simulation are illustrated. The test was carried out in the downstream channel of Longwangtang Reservoir in Dalian City.

[0023] Step 1: Site layout stage

[0024] In the downstream channel of Longwangtang Reservoir, the water surface is as wide as 68 meters wide and only about 30 meters narrow. The river water is greatly affected by tides. Sampling personnel determine the initial sampling section position through GPS locator, and set a sampling section every 25 meters. The I-shaped wheel adopts the type PN400A type I-shaped wheel, and the cable uses a 10mm thick green nylon rope, and the length of a single cable is 200 meters.

[0025] Step 2: Building...

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Abstract

The invention provides a three-dimensional sampling method for simulating transport of river contaminations. The method is characterized in that during contamination transport on-site simulation test, a catamaran reaches a testing section before contamination clusters; as the contamination clusters approach the testing section, the position of the catamaran is adjusted so as to allow the contamination clusters to be located between two boats and to be free of disturbance; and then a multi-point sampler is used to extract water samples at different water depths and different distances from an initial point so as to realize measurement of three-dimensional distribution of the concentration of the river contaminations. The three-dimensional sampling method provided by the invention realizes simultaneous and rapid sampling of a plurality of sampling points and guarantees representativeness and authenticity of the water samples.

Description

technical field [0001] The invention belongs to the technical field of environmental water conservancy engineering research, and relates to a three-dimensional sampling method for river channel pollutant transport simulation. Using this sampling method and the designed sampling device, water samples at different water depths and different starting distances on the monitoring section can be taken simultaneously along the transportation path of the pollution mass, and then a three-dimensional distribution map of river pollutant concentration can be formed. Background technique [0002] In recent years, sudden water pollution incidents have occurred frequently, and it is particularly important to study the law of pollutant diffusion in rivers. The pollutant diffusion field test is to release the tracer in the upstream, analyze the water samples collected downstream, and determine the diffusion law of different pollutants through the data results of the water samples. In the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/16
CPCG01N1/16
Inventor 张弛宋国栋王瑞奇武正诚徐向舟
Owner DALIAN UNIV OF TECH
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