Physical analog test apparatus for canal pollutant transmission under temperature-hydraulic coupling action

Abstract

The invention discloses a physical simulation testing device used in graff contaminant transmission under the action of temperature-hydraulic coupling. The testing device comprises a simulation container, an air pressure control device, a temperature control device, a circulating water system and an online control and monitoring system. The testing system can realize physical simulation test of transmission dynamic characteristics of contaminants in rivers, aqueducts, sewage trenches and surrounding soil and ground water, and integrate monitoring, control and data acquisition; moreover, the testing system realizes real-time display and intelligent control of water level, temperature and pressure variations in the testing system, and carries out overall process acquisition, analysis and visualized input and output on testing data through a data acquisition program. The testing system has the characteristics of reasonable structure, convenient operation, high precision of testing data, quick automatic data acquisition, short testing cycle as well as ideal modularization, openness and expansibility, and the like. In addition, the testing system provides parameter basis to disclose the transmission mechanism of contaminants in soil and ground water under complicated environmental conditions and analyze migration and transformation rule, and also provides technical support for appraising pollution control and treatment technical proposals.

Description

technical field [0001] The invention relates to a physical simulation test device for the transmission of pollutants in rivers and canals under the coupling effect of temperature and hydraulic power, which is mainly used for the pollutant concentration, water content and pore water in the surrounding soil and groundwater systems of rivers, canals, sewage canals, etc. under the condition of variable water level. Physical simulation test research on the dynamic change law of physical quantities such as pressure belongs to the field of resources and environment technology. Background technique [0002] With the increase of industrial construction and people's daily sewage production year by year, a large amount of sewage cannot be treated in time, and is directly or indirectly discharged into the river through canals and sewage canals, causing serious pollution of the canal and its surrounding soil and groundwater. Hot spots and focus issues in environmental pollution control. ...

AI Technical Summary

Problems solved by technology

[0004] (1) The groundwater pollution system is a whole in nature, and often they have to be simulated separately due to conditional constraints, lacking the overall simulation of the system

[0005] (2) In terms of test process control and data collection, most of the equipment is manually operated and recorded, and some equipment uses computer-aided data recording, but it is unable to perform real-time tracking, intelligent control and automatic monitoring of the test process, which is likely to cause human resources. Waste and over-discrete test data will adversely affect the test accuracy

[0006] (3) Most of the equipment has only a single and fixed interface, which makes it impossible to expand the equipment to meet the further needs of the research

Moreover, it is impossible to reasonably replace the instrument, resulting in low expandability and flexibility of the equipment, single function, and poor recycling of the device

[0007] (4) Most of the tests are carried out at constant flow rate, constant water level, normal temperature, and normal pressure, and it is impossible to carry out experimental research on pollutant transmission under conditions such as variable flow rate, variable water level, variable temperature, and variable pressure, and the controllability of the test conditions is poor.

[0008] (5) The monitoring of pollutant concentration is mostly carried out through chemical analysis of water samples, and most of them have not realized the online monitoring of test data

Due to the limitations of sampling methods, sampling frequency, sampling quantity, analysis speed, data processing speed, etc., it is still impossible to monitor changes in environmental quality in a timely manner, and the monitoring data has a certain lag

[0009] As the country's demand for environmental monitoring information is increasing day by day, a large number of related environmental monitoring instruments and equipment are required. The key demand is the technical equipment for pollutant monitoring with independent intellectual property rights. The traditional environmental monitoring is mainly manual and single-device functions. The method can no longer meet the requirements, and the automatic monitoring method of pollutants with good real-time performance, high degree of automation and perfect system function has become a development trend

Images