Device and method for recovering heavy metals in sludge ash based on independent incineration process

Abstract

The invention discloses a device and method for recycling heavy metal in sludge ash based on an independent incineration process, and relates to the technical field of heavy metal recycling. The device comprises a box body, a fixing seat is fixedly connected to the outer wall of the top of the box body, a pump body is fixedly connected to the top of the fixing seat, and a liquid inlet pipe is inserted into the top of the pump body; a fixing pipe is inserted into the bottom of the pump body, and one end of the fixing pipe is inserted into a liquid separation base. The first motor drives the centrifugal cylinder to rotate so as to generate a large centrifugal force, so that sludge water falling into the centrifugal cylinder collides with the screen, when the sludge water collides with the screen, sewage and sludge penetrate through the screen and flow out, and metal impurities in the sewage are blocked by the screen and left in the screen; meanwhile, the sludge wrapped on the outer wall of the metal impurities can be further shaken off through the impact between the sludge water and the screen, so that the magnetic separation efficiency and success rate of the subsequent device on the metal impurities are improved.

Description

technical field [0001] The invention relates to the technical field of heavy metal recovery, in particular to a device and method for recovering heavy metals in sludge ash based on a separate incineration process. Background technique [0002] The sludge water produced during the separate incineration process will contain more heavy metal impurities. Since heavy metal ions are difficult to degrade under natural conditions, they will not only pollute the water source, soil and other environments, but also through the enrichment of the food chain. It will also eventually enter the human body, thereby causing harm to human health. Therefore, it is particularly important to treat sewage containing heavy metal ions. [0003] The Chinese utility model patent with the publication number CN211004961U in the prior art discloses a sewage treatment device with a metal recovery function, belonging to the technical field of sewage treatment equipment, including a filter box, a separation...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device and method for recovering heavy metals in sludge and ash based on a separate incineration process, to solve the problem that when the outer wall of metal impurities in sewage is covered with a thick layer of stains, it will greatly increase the number of magnetic blocks. Difficulty in magnetic separation of metal impurities, resulting in a technical problem of loss of a large amount of metal impurities

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