Process control and monitoring system used for in situ bioremediation of contaminated land

Abstract

The invention relates to a process control and monitoring system used for in situ bioremediation of contaminated land, which comprises a gas injection system, a gas extraction system, a liquid injection system, a monitoring system and a PLC (programmable logic controller) system; wherein the monitoring system comprises a temperature sensor, a gas composition monitor and a humidity sensor; the operating result of the gas injection system is displayed on the temperature sensor and the gas composition monitor; the operating result of the gas extraction system is displayed on the temperature sensor and the gas composition monitor; the operating result of the liquid injection system is displayed on the temperature sensor and the humidity sensor; and the monitoring system is connected to the PLC system and is controlled by the PLC system. The process control and monitoring system disclosed by the invention is easy to operate, reduces the labor input, improves the automation degree of the whole project, can meet the requirement that input material is reasonably distributed during the process of wide-range governance of heterogeneous contaminated land, thereby improving governance efficiency and effect while reducing the operating cost.

Description

【Technical field】 [0001] The invention relates to a process control and monitoring system, in particular to a process control and monitoring system for in-situ bioremediation of polluted land, and belongs to the technical field of environmental protection monitoring systems. 【Background technique】 [0002] After the land is polluted by organic matter, heavy metals and other substances, it will cause great harm to the surrounding environment of the land and the living people. After the domestic waste landfill in my country is closed, and after the relocation of industrial enterprises such as petroleum, chemical, pesticide, pharmaceutical, coking, and airport, the organic matter in the soil will produce leachate, odorous gas, toxic microorganisms and other secondary substances. Secondary pollution will also occupy a large amount of land resources, and due to the complex composition of organic pollutants, its degradation rate is very slow, and it will take about 100 years to com...

AI Technical Summary

Problems solved by technology

[0004] However, due to the large area of ​​the general remediation site, the contaminated soil is heterogeneous, that is, the amount of material required at each point in the material input process is not uniform, and the position from the output port to the input terminal is not fixed. of

Therefore, in the entire process of aerobic biological treatment, if it is necessary to manually adjust the opening and flow of the equipment, the valves on the exhaust pipe, gas injection pipe and water injection pipe to adjust the parameters of the treatment process, the process is very cumbersome. Waste of manpower, and the process will lag accordingly, the level of automation is low, and it does not meet the requirements of modern engineering construction

Images