What is special about the treatment of contaminated sites?
With the rapid development of my country's economy and the adjustment of industrial structure, the speed of urbanization has accelerated, and my country's environmental protection requirements for enterprises have continued to increase. A large number of enterprises have been shut down or re
With the rapid development of my country's economy and the adjustment of industrial structure, the speed of urbanization has accelerated, and my country's environmental protection requirements for enterprises have continued to increase. A large number of enterprises have been shut down or relocated, and the vacated sites have become polluted sites due to soil and groundwater pollution due to their original use. Contaminated sites refer to areas that carry harmful substances due to accumulation, storage, disposal, etc., and have potential risks to human health and the environment. Contaminated sites will pollute soil and groundwater, harm human health and the environment, and cause economic losses. Therefore, it is of great practical significance to carry out soil remediation on contaminated sites.
The skid-mounted soil washing equipment developed by Desen Environment adopts the design of skid-mounted modules as a whole, which greatly saves installation time, and the transition is quick and the footprint is small; the addition of 5G intelligent modules can be operated remotely, which is convenient It is fast and connected to the government platform to monitor real-time data at any time. At present, the soil remediation volume of an Anlili site has reached 100/h, which is highly appreciated by users.
Skid-mounted soil washing equipment mainly includes: storage tank, mud buffer tank, dosing kettle, centrifugal separation equipment, etc. The main technological process is: feeding - primary screening - secondary screening - hydraulic separation - synergistic elution - mud-water separation.
During soil pretreatment, first use the crushing and screening bucket to screen the contaminated soil, sieve out the stones and sundries, and crush the soil to ensure the subsequent soil washing treatment effect. During the sieving, the sieving fineness is checked every time the sieving is completed, and the particle size under the sieve is controlled to be no more than 20mm. Repeat the sieving at least 2 times. After the soil is sieved, inspect it visually, sieve repeatedly and complete the sieving operation after passing the visual inspection. The treatment unit is the wastewater purification equipment that is matched with the ectopic chemical washing repair equipment to help the washing equipment complete the water cycle, specifically including multi-stage dosing and stirring reactors, static reactors, plate and frame filter presses, etc.
According to the feedback of the results of each project, the target pollutant cadmium in the remediation soil is lower than the remediation target value, and the remediation results of the contaminated soil have reached the expected remediation target value, and the site can be used as commercial land (the second type of land) for development and utilization.
