Device for repairing phosphorus-containing contaminated soil

Abstract

The invention provides a device for repairing phosphorus-containing contaminated soil. The device is provided with a closed shell, the shell is provided with a feed port, and a crushing roller, a vibrating screen and a stirrer are arranged below the feed port from top to bottom; a large-particle-size soil discharging port is formed in the side, close to the vibrating screen, of the shell, and a repaired soil outlet for discharging repaired contaminated soil is formed in the bottom of the shell; and two guide holes are formed in the shell, one guide hole is connected with an air blower and is used for providing oxygen for the interior of the shell, and the other guide hole is communicated with a waste gas and wastewater treatment unit. The crushing roller, the vibrating screen and the stirrer are arranged, and crushing, screening and stirring are integrated; compared with other phosphorus-containing contaminated soil treatment devices, the device of the invention has the following advantages: all parts are compactly connected, and meanwhile the occupied area of the equipment is reduced; and a closed structure is adopted, air blowing and air inducing are integrated into one device, it is guaranteed that harmful substances in phosphorus-containing contaminated soil are collected and treated in an organized mode, and meanwhile it can be guaranteed that site peculiar smells are controlled after remediation.

Description

technical field [0001] The invention belongs to the technical field of remediation of contaminated sites, in particular to a device and system for remediation of phosphorus-containing contaminated soil. Background technique [0002] Yellow phosphorus is a colorless to yellow waxy solid, insoluble in water, slightly soluble in benzene and chloroform, easily soluble in carbon disulfide, with a melting point of 44.1°C. It can spontaneously ignite when exposed to air, and has a garlic odor. [0003] In the past, many manufacturers (such as pesticide factories) that used yellow phosphorus as their products and raw materials discharged the sludge phosphorus randomly during the production process, resulting in serious pollution of yellow phosphorus to the soil around the factory. With the development of urbanization, many plots may have peculiar smell or spontaneous combustion during subsequent development, which affects the health of construction workers and surrounding residents....

AI Technical Summary

Problems solved by technology

[0003] In the past, many manufacturers (such as pesticide factories) that used yellow phosphorus as their products and raw materials discharged the sludge phosphorus randomly during the production process, resulting in serious pollution of the soil around the factory by yellow phosphorus.

With the development of urbanization, many plots may have peculiar smell or spontaneous combustion during subsequent development, which will affect the health of construction workers and surrounding residents. Therefore, the problem of remediation of yellow phosphorus-contaminated soil needs to be solved urgently

[0004] There are few existing remediation processes for yellow phosphorus-contaminated soil, all of which have evolved from the yellow phosphorus extraction process

Due to the low content of yellow phosphorus in phosphorus-contaminated soil, remediation using yellow phosphorus treatment process (sludge phosphorus method) will lead to a lot of waste of resources, so it is very important to find a process suitable for the remediation of yellow phosphorus-contaminated soil

[0005] After retrieval, a treatment device for yellow phosphorus-contaminated soil (CN205085145U) discloses a treatment device for yellow phosphorus-contaminated soil. The operation in the confined space will inevitably affect the staff

A treatment method for yellow phosphorus-contaminated soil (CN106345798A) discloses a treatment method that can effectively remove yellow phosphorus in soil. The method uses chemical methods to disproportionate yellow phosphorus-contaminated soil, which is safe and environmentally friendly and has a good repair effect. But the process is cumbersome, stirring-screening-stirring, reciprocating but cannot be repaired in the same equipment

Images