Noble-metal iron-carbon-filler sewage reactor

Abstract

The invention discloses a noble-metal iron-carbon-filler sewage reactor. According to the reactor, a tank body is inside provided with a stainless-steel porous filtration plate, three layers of an insertion type noble-metal iron carbon filler are arranged on the stainless-steel porous filtration plate from top to bottom, the filler is composed of a plurality of specially-prepared steel plate single bodies through mutual socket connection via slots, the slots are arranged at one side of each specially-prepared steel plate single body, and the width of each slot is same to the thickness of the specially-prepared steel plate single body. The insertion type noble-metal iron carbon filler of the reactor can slowly uniformly precipitate various metal metastable ions which are uniform and not easy to lose. The filler truly realizes no passivation, no obstruction and no demand of replacing, and only need maintaining for 1-3 times every year, and the maintenance time each time is about 4 h. COD removal rate is high, water secondary pollution is not caused, and the sewage removal efficiency is improved by 20%-30% compared with that of a common iron carbon micro-electrolysis technology.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a sewage treatment reactor, in particular to a precious metal iron-carbon filled sewage reactor. Background technique [0002] With the development of my country's urban scale and the continuous improvement of the degree of industrialization, a large amount of difficult-to-treat industrial and domestic sewage is produced. Sewage treatment plants are facing severe challenges, especially in the field of industrial sewage treatment, which has a large amount of sewage discharge, complex water quality and high toxicity. , Ammonia nitrogen and COD are relatively high. The traditional sewage treatment process has low efficiency, long process, high investment and operating costs. [0003] The iron-carbon micro-electrolysis reactor can be used to treat printing and dyeing wastewater, pharmaceutical wastewater, chemical wastewater and other fields. Ordinary sewage treatment carriers ...

AI Technical Summary

Problems solved by technology

Ordinary sewage treatment carriers generally process iron filings and charcoal and other carrier materials into a certain shape through batching, forming, firing and other processes. Separation and co-catalyst, and finally reduced and roasted. Although the carrier catalyst made by this process has a relatively large specific surface area and a relatively large contact area with sewage, the carrier is very easy to lose, and because the pore size is too small, it is easy to block. Requires repeated flushing with backwash water to regenerate

In the process of use, the inert layer on the surface of the iron powder prevents the further progress of the micro-electrolysis reaction, and at the same time, it is easy to passivate and harden, resulting in the plugging of the filler layer, and because the iron and carbon are in physical contact, it is easy to form an isolation layer between them. It makes micro-electrolysis unable to continue and loses its function, which leads to frequent replacement of micro-electrolysis materials, which not only has a large workload and high cost, but also affects the treatment effect and efficiency of wastewater

[0004] In addition, the small surface area of ​​traditional micro-electrolysis materials also makes wastewater treatment take a long time, increasing the investment cost per ton of water, which seriously affects the utilization and promotion of micro-electrolysis processes

Images