CN218345239U

CN218345239U - Device for treating coking wastewater by adopting electrochemical optimization Fenton method

Info

Publication number: CN218345239U
Application number: CN202221867136.9U
Authority: CN
Inventors: 隋月斯; 王刚; 刘波; 李振来; 崔海蛟; 张成展
Original assignee: Bengang Steel Plates Co Ltd; Benxi Beiying Iron and Steel Group Co Ltd
Current assignee: Bengang Steel Plates Co Ltd; Benxi Beiying Iron and Steel Group Co Ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-01-20
Anticipated expiration: 2032-07-20

Abstract

The utility model relates to an adopt electrochemistry to optimize device of fenton method processing coking wastewater, retrieve the filter-tank including water treatment pond, negative pole, positive pole, the iron-containing slag material, the positive pole is the bottom of platelike horizontal arrangement in the water treatment groove, and the negative pole is in the top of positive pole, is equipped with on the inlet channel in water treatment pond and contains the iron-containing slag material and puts in the mouth, and the outlet conduit UNICOM of water treatment pond contains the iron-containing slag material and retrieves the filter-tank. The utility model has the advantages that: 1) The electro-Fenton system overcomes a plurality of defects of Fenton reaction, improves the water treatment efficiency, shortens the treatment time and reduces the generation of iron mud. 2) The anode plate is placed at the bottom of the water treatment tank, a large amount of space is saved, the contact area of the anode plate and water is enlarged, and the reaction efficiency can be improved due to better conductivity. 3) The heterogeneous Fenton catalyst iron-containing slag is introduced, and the treatment efficiency is improved. 4) The recycling of the iron-containing slag of the catalyst not only solves the resource utilization of the waste, but also saves the cost.

Description

Device for treating coking wastewater by adopting electrochemical optimization Fenton method

Technical Field

The utility model relates to a water treatment technical field especially relates to an adopt electrochemistry to optimize device of fenton's method processing coking wastewater.

Background

Coking wastewater is one of the most difficult wastewater to treat by chemical enterprises, contains phenols and polycyclic aromatic compounds, and is typical industrial wastewater of organic compounds difficult to degrade. The traditional Fenton method for treating coking wastewater is a process of utilizing a Fenton reagent to generate hydroxyl radical with strong oxidizing property to oxidize organic matters in water so as to realize mineralization of the wastewater. The general industrial Fenton process has the problems of large dosage, strong pollution of generated iron mud, low pollutant degradation efficiency in the later period and the like, and the problems can be effectively improved by adopting improved Fenton-like or providing external energy by means of photoelectric heat and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adopt electrochemistry to optimize fenton's method and handle device of coking wastewater, it is big to have solved traditional fenton's method dosage, produces the problem of iron mud. The utility model discloses an anode plate occupation space is little in the reactor, and the abandonment contains iron slag charge and can recycle resources are saved and the cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an adopt electrochemistry to optimize fenton method and handle device of coking wastewater, includes water treatment tank, negative pole, positive pole, contains the scum material and retrieve the filter-tank, the negative pole is the bottom of plate-like horizontal row arrangement at the water treatment tank, the negative pole is in the top of positive pole, be equipped with on the water intake pipe in water treatment tank and contain the scum material and put in the mouth, the outlet conduit UNICOM of water treatment tank contains the scum material and retrieves the filter-tank.

The anode adopts titanium-based RuO ₂ -TiO ₂ And coating the electrode.

The filter tank for recycling the iron-containing slag materials comprises a water receiving tank and a filter screen, wherein the filter screen is hung at the upper end of the water receiving tank, a drain pipe is arranged at the bottom of the water receiving tank, and the filter screen is integrally a concave groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1) The electro-Fenton system overcomes a plurality of defects of Fenton reaction, improves the water treatment efficiency, shortens the treatment time and reduces the generation of iron mud.

2) The utility model discloses place the anode plate in the bottom of water treatment pond, saved a large amount of spaces, and the area of contact grow of anode plate and water, reaction efficiency can be improved better to electric conductivity.

3) The utility model discloses introduced heterogeneous fenton's catalyst and contained the iron slag charge, improved the treatment effeciency.

4) The recycling of the iron-containing slag of the catalyst not only solves the resource utilization of the waste, but also can save the cost by recycling for many times in the system.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-a drain pipe, 2-a water-bearing tank, 3-a filter screen, 4-a water outlet pipeline, 5-a cathode, 6-a water inlet pipeline, 7-a water treatment tank, 8-an anode, 9-an iron-containing slag material feeding port and 10-a sewage discharge port.

Detailed Description

The present invention will be described in more detail by way of examples, which are merely illustrative of the best mode of carrying out the invention and are not intended to limit the scope of the invention in any way.

The utility model provides an adopt electrochemistry to optimize device that fenton method handled coking wastewater, includes water treatment tank 7, negative pole 5, positive pole 8, contains the scum material and retrieves the filter-tank, positive pole 8 is the bottom of plate-like horizontal row arrangement at water treatment tank 7, negative pole 5 is in the top of positive pole 8, it puts in mouthful 9 to be equipped with containing the scum material on water inlet pipe 6 of water treatment tank 7, water outlet pipe 4 UNICOM of water treatment tank 7 contains the scum material and retrieves the filter-tank.

The anode 8 adopts titanium-based RuO ₂ -TiO ₂ And coating the electrode.

The iron-containing slag material is a mixture of blast furnace slag and converter slag, generally a porous slag material, wherein the iron content is more than or equal to 10 percent, and the granularity is 3-10mm.

The filter tank for recycling the iron-containing slag materials comprises a water receiving tank 2 and a filter screen 3, wherein the filter screen 3 is hung at the upper end of the water receiving tank 2, a drain pipe 1 is arranged at the bottom of the water receiving tank 2, and the filter screen 3 is integrally a concave groove.

The iron-containing slag material feeding port 9 is used for feeding catalyst iron-containing slag materials, and the iron-containing slag material recycling filter tank is used for recycling the catalyst iron-containing slag materials and can be recycled.

The drain 10 is located the water treatment pond bottom for the water treatment pond is emptied when overhauing, also can be used to the reaction tank contain the scum material when concentration is too big the scum is with arranging, and the discharge can get into 2 and retrieve through the filter screen and contain the scum material.

Example (b):

comprehensively consider the concentrated water retrieval and utilization requirement of certain chemical plant's coking wastewater, cancelled original a district fenton processing procedure, concentrate on three districts and adopt the utility model discloses a device of coking wastewater is handled to electrochemistry optimization fenton method. The COD and ammonia nitrogen of the effluent are obviously reduced and the fluctuation is very small, the COD of the concentrated water is completely less than or equal to 150 ₃ -N.ltoreq.25. The results of comparison between the front and rear electrodes are shown in Table 1.

TABLE 1 comparison table of front and rear effects of electrodes

The utility model discloses add external power source on original fenton technical basis, utilize electrochemical reaction to continuously produce H ₂ O ₂ With Fe in solution ²⁺ Reaction ofGenerate a large amount of OH-degraded organic matters, and generate Fe ³⁺ And is reduced to Fe by the cathode ²⁺ Thereby realizing the reutilization and greatly reducing the generation of iron sludge.

The anode is plate-shaped and is arranged at the bottom of the reactor, and the anode adopts titanium-based RuO ₂ -TiO ₂ The coating electrode belongs to a dimensionally stable anode and has good stability, the surface of the electrode is not easy to adsorb products, so the coating electrode is not easy to scale, the service life of the electrode is long, the electrolytic potential of the device is high, and the electrode is not easy to corrode and lose. And a large amount of space is saved, the contact area of the anode plate and water is enlarged, the conductivity is better, and the reaction efficiency can be improved.

The waste iron-containing slag materials and the waste water are introduced into the reactor together, and the iron-containing slag materials in the system can be used as a catalyst of heterogeneous Fenton, so that the reaction efficiency is greatly improved.

The iron-containing slag material recovery device is additionally arranged, the iron-containing slag material in the effluent is recycled and reused, and can be recycled and added into the reactor for many times, so that the resource saving is realized, and the cost is reduced.

Claims

1. The utility model provides an adopt electrochemistry to optimize fenton method processing coking wastewater's device, its characterized in that, include water treatment tank, negative pole, positive pole, contain the scum material and retrieve the filter-tank, the negative pole is the bottom of plate-like horizontal row arrangement at water treatment tank, the negative pole is in the top of positive pole, be equipped with on the water intake pipe in water treatment tank and contain the scum material and put in the mouth, the outlet conduit UNICOM of water treatment tank contains the scum material and retrieves the filter-tank.

2. The device for treating coking wastewater by adopting the electrochemical optimization Fenton method according to claim 1, wherein the anode adopts titanium-based RuO ₂ -TiO ₂ And coating the electrode.

3. The device for treating coking wastewater by adopting the electrochemical optimization Fenton method according to claim 1, wherein the iron-containing slag material recovery filter tank comprises a water receiving tank and a filter screen, the filter screen is hung at the upper end of the water receiving tank, a drain pipe is arranged at the bottom of the water receiving tank, and the filter screen is integrally a concave groove.