Leaching system and method for polluted slag blocks

Abstract

The invention provides a leaching system and method for polluted slag blocks, and belongs to the technical field of polluted soil remediation, and the leaching system for the polluted slag blocks comprises a leaching bearing platform; a transport unit; an opening is formed in the upper part of the box body; the side faces and the ground of the box body are hollowed out. The spraying and washing unit is provided with a plurality of nozzles; a wastewater collection unit; the wastewater collecting unit is used for collecting wastewater generated by the spraying and washing unit; according to the leaching system for the polluted slag blocks, the equipment is simple in structure, besides the bearing platform cushion layer and part of the waste water collecting units need concrete pouring, other devices all adopt modular design, rapid assembly and arrangement can be achieved, devices such as transmission devices and sliding rails do not need to be installed, the cost is low, and the leaching system is suitable for industrial popularization.

Description

technical field

[0001] The invention relates to the technical field of contaminated soil remediation, in particular to a rinsing system and method for contaminated slag. Background technique

[0002] Contaminated slag is mainly produced in the screening pretreatment process in the process of ex-situ remediation of contaminated soil and the crushing and demolition of surface and underground structures in polluted areas. Due to its long-term contact with polluted soil, the surface is often attached to some types of polluted soil. If it is not properly treated, it may have an impact on the environment again with the process of cinder transfer, backfilling, and resource utilization.

[0003] Chinese patent document CN104475441A discloses a soil leaching repair system based on the design concept of reduction and concentration, including four modular units connected in sequence: feed screening unit, mineral washing unit, sludge dehydration unit and sewage treatment at the end uni...

Examples

Embodiment 1

[0059] A rinsing system for contaminated slag provided in this embodiment includes: a rinsing load-bearing platform 6, a transport unit, a spray rinsing unit and a waste water collection unit;

[0060] Such as figure 1 , 2 As shown, the transport unit has a box body 3 suitable for accommodating slag, and the box body 3 is connected by a transport device. In this solution, the transport device includes: a traction vehicle 21, a vehicle chassis 4 with wheels, and a traction vehicle connected to 21 and the connecting piece 22 of the vehicle chassis 4; the vehicle chassis 4 usually chooses the transformation of a commonly used truck chassis, which is a bridge type, which is convenient for the nozzles at the bottom to wash the bottom of the slag, and also facilitates the leached mud to fall smoothly on the leached load-bearing platform 6.

[0061] The box body 3 is a large-capacity mesh cage, mainly used for the storage of contaminated slag, and provides space for subsequent washi...

Embodiment 2

[0081] A method for rinsing contaminated slag provided in this embodiment includes the following steps:

[0082] Step 1. Hoist the box body 3 on the chassis of the traction vehicle 21, and use an excavator or a forklift to add polluted slag blocks of various particle sizes that have been sieved or broken into the box body 3, and add them to the box body 3. The top of the box 3 is flat and does not overflow. The particle size of the slag is generally not less than 5cm, and the slag smaller than 5cm can be processed by other processes after collection. Box 3 has a single batch processing capacity of more than 30 cubic meters.

[0083] Step 2. Tractor vehicle 21 transports box 3 containing contaminated slag through the washing platform, and the camera installed on the top of spray pipe 1 records the cleaning records of this batch through vehicle license plate recognition. The recorded information is mainly the transport license plate , cleaning start time and end time, estimate...

technical field

[0001] The invention relates to the technical field of contaminated soil remediation, in particular to a rinsing system and method for contaminated slag. Background technique

[0002] Contaminated slag is mainly produced in the screening pretreatment process in the process of ex-situ remediation of contaminated soil and the crushing and demolition of surface and underground structures in polluted areas. Due to its long-term contact with polluted soil, the surface is often attached to some types of polluted soil. If it is not properly treated, it may have an impact on the environment again with the process of cinder transfer, backfilling, and resource utilization.

[0003] Chinese patent document CN104475441A discloses a soil leaching repair system based on the design concept of reduction and concentration, including four modular units connected in sequence: feed screening unit, mineral washing unit, sludge dehydration unit and sewage treatment at the end uni...

Examples

Embodiment 1

[0059] A rinsing system for contaminated slag provided in this embodiment includes: a rinsing load-bearing platform 6, a transport unit, a spray rinsing unit and a waste water collection unit;

[0060] Such as figure 1 , 2 As shown, the transport unit has a box body 3 suitable for accommodating slag, and the box body 3 is connected by a transport device. In this solution, the transport device includes: a traction vehicle 21, a vehicle chassis 4 with wheels, and a traction vehicle connected to 21 and the connecting piece 22 of the vehicle chassis 4; the vehicle chassis 4 usually chooses the transformation of a commonly used truck chassis, which is a bridge type, which is convenient for the nozzles at the bottom to wash the bottom of the slag, and also facilitates the leached mud to fall smoothly on the leached load-bearing platform 6.

[0061] The box body 3 is a large-capacity mesh cage, mainly used for the storage of contaminated slag, and provides space for subsequent washi...

Embodiment 2

[0081] A method for rinsing contaminated slag provided in this embodiment includes the following steps:

[0082] Step 1. Hoist the box body 3 on the chassis of the traction vehicle 21, and use an excavator or a forklift to add polluted slag blocks of various particle sizes that have been sieved or broken into the box body 3, and add them to the box body 3. The top of the box 3 is flat and does not overflow. The particle size of the slag is generally not less than 5cm, and the slag smaller than 5cm can be processed by other processes after collection. Box 3 has a single batch processing capacity of more than 30 cubic meters.

[0083] Step 2. Tractor vehicle 21 transports box 3 containing contaminated slag through the washing platform, and the camera installed on the top of spray pipe 1 records the cleaning records of this batch through vehicle license plate recognition. The recorded information is mainly the transport license plate , cleaning start time and end time, estimate...

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