CN211871667U - Organic Wastewater Treatment System - Google Patents

Abstract

The utility model relates to the field of wastewater treatment, and discloses an organic wastewater treatment system, comprising: an electric Fenton device, an activated carbon device and an electric oxidation device; wherein, the activated carbon device comprises a first tank body, and the first tank body is filled with activated carbon; The oxidation device comprises a second tank body, an electro-oxidative anode and an electro-oxidative cathode are arranged in the second tank body, the liquid inlet of the second tank body is connected with the liquid outlet of the first tank body; the liquid inlet of the electro-Fenton device is connected to the into the organic waste water, and the liquid outlet of the electro-Fenton device is connected to the liquid inlet of the first tank body. The utility model combines activated carbon adsorption process, electro-oxidation process and electro-Fenton process. high, and can save power consumption.

Description

Organic Wastewater Treatment System

technical field

The utility model relates to the technical field of wastewater treatment, in particular to an organic wastewater treatment system.

Background technique

The sources of industrial wastewater are complex. Modern oil refineries, textile industries, and petrochemical enterprises may produce industrial wastewater in the process of development, thus threatening the surrounding ecological environment. Among them, the refractory organic wastewater has the characteristics of stable structure and strong toxicity, so that the conventional industrial wastewater treatment measures cannot completely remove the pollutants in the wastewater, and cannot meet the purification requirements in the industry. Most of these wastewaters contain toxic and refractory organic pollutants such as polycyclic aromatic hydrocarbons, halogenated hydrocarbons, heterocyclic compounds, and organic pesticides.

Domestic and foreign treatment methods for high-concentration refractory organic wastewater mainly include: solvent extraction method, adsorption method, incineration method, chemical oxidation method, biochemical treatment method, advanced oxidation method, etc. In the mid-1980s, based on various defects of traditional Fenton water treatment technology, scholars developed a new type of Fenton technology based on Fenton reagent. Simple and easy to operate, the electro-Fenton technology is widely used in the treatment of refractory organic wastewater at home and abroad. However, the electro-Fenton technology still has disadvantages such as high energy consumption and low final removal rate of organic matter.

Utility model content

(1) Technical problems to be solved

The purpose of the embodiments of the present utility model is to provide an organic waste water treatment system, so as to solve the technical problems of high energy consumption and low final removal rate of organic matter in the electro-Fenton technology in the prior art.

(2) Technical solutions

In order to solve the above technical problems, an embodiment of the present utility model provides an organic wastewater treatment system, including an electro-Fenton device, an activated carbon device and an electro-oxidation device; wherein,

The activated carbon device includes a first tank body, and the first tank body is filled with activated carbon;

The electro-oxidation device comprises a second tank body, an electro-oxidation anode and an electro-oxidation cathode are arranged in the second tank body, and the liquid inlet of the second tank body is connected with the liquid outlet of the first tank body;

The liquid inlet of the electro-Fenton device leads to organic waste water, and the liquid outlet of the electro-Fenton device is connected with the liquid inlet of the first tank body.

Wherein, the electro-Fenton device includes a third tank body and a dosing device, the dosing device is connected to the third tank body, and an electro-Fenton anode and an electro-Fenton cathode are arranged in the third tank body.

Wherein, the third tank body further includes a rotating device, the rotating device includes a rotating shaft and a rotating table, the electro-Fenton anode and the electro-Fenton cathode are respectively fixed to the rotating table around the rotation direction of the rotating table. On the peripheral side of the rotary table, the rotating shaft is connected with the rotary table to drive the rotary table to rotate.

Wherein, the electro-Fenton anode and the electro-Fenton cathode are respectively provided with 2 groups, 4 groups or 6 groups correspondingly, and the included angle between the electro-Fenton anode and the electro-Fenton cathode is respectively 90° , 45° or 30°.

Wherein, the electro-Fenton anode is an iron mesh plate, and the electro-Fenton cathode is a stainless steel mesh plate.

Wherein, the third groove body is an integral structure connected with a conical groove body and a cylindrical groove body, and the conical groove body is connected to the bottom of the cylindrical groove body, and the bottom of the conical groove body is connected with a A mud discharge pipe and a mud discharge pipe valve provided in the mud discharge pipe, the electro-Fenton anode and the electro-Fenton cathode are set in the cylindrical tank body.

Wherein, it also includes an inclined plate precipitation area, and the inclined plate precipitation area is arranged on the inner side surface of the conical tank body.

Wherein, the medicine adding device includes a fourth tank body, a stirring mechanism and a medicine adding box, and the stirring mechanism and the medicine adding box are both arranged in the fourth tank body.

Wherein, the first groove body and the second groove body are constructed as an integral "U"-shaped groove body, and the interior of the "U"-shaped groove body is provided with a partition plate.

(3) Beneficial effects

An organic wastewater treatment system provided by the embodiment of the present utility model combines the activated carbon adsorption process, the electro-oxidation process and the electro-Fenton process. The treated organic wastewater has a high removal rate of organic matter and can save electricity consumption.

Description of drawings

FIG. 1 is a schematic structural diagram of an organic wastewater treatment system of the present invention.

Reference number:

1: Fourth tank body; 2: Stirring mechanism; 3: Dosing box; 4: Iron mesh pole plate; 5: Stainless steel mesh pole plate; 6: Clamping piece; 7: Knob; 8: Rotary table; 9: Rotation Shaft; 10: Inclined plate sedimentation area; 11: Mud discharge pipe valve; 12: Power supply; 13: Activated carbon; 14: Separator; 15: "U" shaped tank body; 16: Graphite rod; 17: Stainless steel rod; 18 : the first tank body; 19: the second tank body; 20: the third tank body.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in FIG. 1 , an embodiment of the present utility model discloses an organic wastewater treatment system, which includes an electro-Fenton device, an activated carbon device and an electro-oxidation device.

Wherein, the activated carbon device includes a first tank body 18, and the first tank body 18 is filled with activated carbon 13;

The electro-oxidation device comprises a second tank body 19, an electro-oxidative anode and an electro-oxidative cathode are arranged in the second tank body 19, and the liquid inlet of the second tank body 19 is connected with the liquid outlet of the first tank body 18;

The liquid inlet of the electro-Fenton device leads to organic waste water, and the liquid outlet of the electro-Fenton device is connected to the liquid inlet of the first tank body 18 .

Specifically, the first tank body 18, the second tank body 19 and the electro-Fenton device are all provided with a liquid inlet and a liquid outlet, and the organic waste water is passed through the liquid inlet of the electro-Fenton device, and after the electro-Fenton treatment , pass through the liquid outlet of the electro-Fenton device and the liquid inlet of the first tank body 18 in turn to perform activated carbon adsorption, and after adsorption, pass through the liquid outlet of the first tank body 18 and the liquid inlet of the second tank body 19 in sequence It is electro-oxidized and finally discharged from the liquid outlet of the second tank body 19 .

In this embodiment, the organic waste water is first treated by the electro-Fenton process. The anode of the electro-Fenton process in this embodiment is connected to the positive electrode of the power supply 12 by using an iron mesh, and the cathode is connected to the negative electrode of the power supply 12 by using a stainless steel mesh. Acid or peroxide is added. Hydrogen, after being electrified, has strong oxidizing ability to remove organic matter in organic wastewater. The electro-Fenton method utilizes electrolysis to generate hydrogen peroxide or ferrous ions or simultaneously generate these two substances to form a Fenton reagent reaction, thereby oxidatively degrading organic substances.

The wastewater treated by the electro-Fenton process is passed into the first tank body 18, and activated carbon 13 is used to adsorb the wastewater, deodorize and deodorize, and also block a part of the unprecipitated iron sludge produced in the electro-Fenton process.

The wastewater adsorbed by the activated carbon 13 is passed into the second tank body 19 for electro-oxidation treatment, and the wastewater is further treated to remove organic matter and remove intractable organic pollutants. The anode of the electro-oxidation process in this embodiment adopts The graphite rod 16 is connected to the positive pole of the power supply 12 , and the cathode is connected to the negative pole of the power supply 12 by a stainless steel rod 17 . It can be adjusted to other electrodes, such as titanium-coated electrodes, according to the needs of wastewater quality.

An organic wastewater treatment system provided by the embodiment of the present utility model combines the activated carbon adsorption process, the electro-oxidation process and the electro-Fenton process. The treated organic wastewater has a high removal rate of organic matter and can save electricity consumption.

The electro-Fenton device includes a third tank body 20 and a dosing device, the dosing device is connected to the third tank body 20 , and an electro-Fenton anode and an electro-Fenton cathode are arranged in the third tank body 20 . Preferably, the medicine adding device includes a fourth tank body 1 , a stirring mechanism 2 and a medicine adding box 3 , and the stirring mechanism 2 and the medicine adding box 3 are both arranged in the fourth tank body 1 . Specifically, the dosing box 3 adds hydrogen peroxide or acid into the fourth tank body 1 , stirs evenly by the stirring mechanism 2 , and then passes into the third tank body 20 after mixing evenly.

Wherein, the third tank body 20 also includes a rotating device, the rotating device includes a rotating shaft 9 and a rotating table 8, and the electro-Fenton anode and the electro-Fenton cathode are respectively fixed on the peripheral side of the rotating table 8 around the rotation direction of the rotating table 8, The rotating shaft 9 is connected with the rotating table 8 to drive the rotating table 8 to rotate. Specifically, in this embodiment, the rotating shaft 9 drives the rotating table 8 to drive the electro-Fenton anode and the electro-Fenton cathode to rotate 360° around the rotating shaft, and the DC power supply 12 is connected to perform the electro-Fenton reaction.

Wherein, the electro-Fenton anodes and the electro-Fenton cathodes are respectively provided with 2 groups, 4 groups or 6 groups, and the included angles between the electro-Fenton anodes and the electro-Fenton cathodes are respectively 90°, 45° or 30°. In this embodiment, one electro-Fenton anode and one electro-Fenton cathode are one group, and other groups and angles of electro-Fenton cathodes and electro-Fenton anodes can also be set according to actual needs to make them fully compatible with the Fenton reagent. to react.

The electro-Fenton anode is an iron mesh plate 4 , and the electro-Fenton cathode is a stainless steel mesh plate 5 . The electro-Fenton anode and the electro-Fenton cathode in this embodiment have a mesh structure, which can increase the contact area between the electrode and the wastewater, and the mesh structure makes it easier to achieve uniform and slow stirring. Preferably, two parallel clamping pieces 6 (preferably iron pieces) are arranged on the front and rear sides of the iron mesh pole plate 4 respectively, and the two clamping pieces 6 are fastened with the knob 7 to clamp the iron mesh pole The plate 4 is fixed on the rotating table 8, and the stainless steel mesh plate 5 is also fixed on the rotating table 8 through the two clamping pieces 6 and the knob 7.

Among them, the third tank body 20 is an integral structure connected with a conical tank body and a cylindrical tank body, and the conical tank body is connected to the bottom of the cylindrical tank body, and the bottom of the conical tank body is connected with a mud discharge pipe and a The mud pipe valve 11 of the mud pipe, the electro-Fenton anode and the electro-Fenton cathode are arranged in the cylindrical tank body. Since the electro-Fenton reaction will produce a certain amount of floc sedimentation, the floc sedimentation is discharged through the sludge discharge pipe at the bottom of the conical tank body, and the sludge discharge pipe valve 11 is used to control the on-off of the sludge discharge pipe. In this embodiment, the conical groove body and the cylindrical groove body are connected in an integrated structure, which effectively saves space.

Preferably, the inclined plate precipitation zone 10 is also included. The inclined plate precipitation zone 10 is arranged on the inner side of the conical tank body, and the flocs are precipitated at the bottom of the conical tank body through the inclined plate precipitation zone 10, and the sludge discharge pipe is opened. Valve 11, out of the device. In this embodiment, a sloping plate sedimentation tank can be used, and the inclined plate sedimentation tank uses the principle of shallow sedimentation to shorten the sedimentation distance of particles, thereby shortening the sedimentation time, and increasing the sedimentation area of the sedimentation tank, thereby improving the treatment efficiency.

Among them, the first groove body 18 and the second groove body 19 are constructed into a "U"-shaped groove body 15, and the inside of the "U"-shaped groove body 15 is provided with a partition for controlling the on-off of the left and right flow channels. plate 14. The design of the "U"-shaped groove body 15 in this embodiment can flexibly implement two placement modes, vertical and horizontal, saving equipment space. The baffle 14 can be designed as a shutter, which can realize artificial control between the left flow channel (equivalent to the first tank body 18 ) and the right flow channel (equivalent to the second tank body 19 ) of the “U”-shaped tank body 15 . on and off.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the protection scope of the present invention.

Claims (9)

1. an organic waste water treatment system, is characterized in that, comprises electro-Fenton device, activated carbon device and electro-oxidation device; Wherein, The activated carbon device includes a first tank body, and the first tank body is filled with activated carbon; The electro-oxidation device comprises a second tank body, an electro-oxidation anode and an electro-oxidation cathode are arranged in the second tank body, and the liquid inlet of the second tank body is connected with the liquid outlet of the first tank body; The liquid inlet of the electro-Fenton device leads to organic waste water, and the liquid outlet of the electro-Fenton device is connected with the liquid inlet of the first tank body. 2 . The organic wastewater treatment system according to claim 1 , wherein the electro-Fenton device comprises a third tank body and a dosing device, the dosing device is connected to the third tank body, and the An electro-Fenton anode and an electro-Fenton cathode are arranged in the third tank. 3 . The organic wastewater treatment system according to claim 2 , wherein a rotating device is further included in the third tank body, and the rotating device includes a rotating shaft and a rotating table, and the electro-Fenton anode and the The electro-Fenton cathodes are respectively fixed on the peripheral side of the rotary table around the rotation direction of the rotary table, and the rotating shaft is connected with the rotary table to drive the rotary table to rotate. 4 . The organic wastewater treatment system according to claim 3 , wherein the electro-Fenton anode and the electro-Fenton cathode are respectively provided with 2 groups, 4 groups or 6 groups correspondingly, and the electro-Fenton anode The included angle with the electro-Fenton cathode is 90°, 45° or 30°, respectively. 5 . The organic wastewater treatment system according to claim 3 , wherein the electro-Fenton anode is an iron mesh plate, and the electro-Fenton cathode is a stainless steel mesh plate. 6 . 6 . The organic wastewater treatment system according to claim 2 , wherein the third tank body is an integral structure in which a conical tank body and a cylindrical tank body are connected, and the conical tank body is connected to the The bottom of the cylindrical tank body, the bottom of the conical tank body is connected with a mud discharge pipe and a mud discharge pipe valve arranged in the mud discharge pipe, and the electro-Fenton anode and the electro-Fenton cathode are arranged on the inside a cylindrical tank. 7 . The organic wastewater treatment system according to claim 6 , further comprising an inclined plate precipitation zone, the inclined plate precipitation zone being provided on the inner side of the conical tank body. 8 . 8 . The organic wastewater treatment system according to claim 2 , wherein the dosing device comprises a fourth tank body, a stirring mechanism and a dosing box, and the stirring mechanism and the dosing box are both located in the inside the fourth tank. 9 . The organic wastewater treatment system according to claim 1 , wherein the first tank body and the second tank body are constructed into a “U”-shaped tank body, and the “U”-shaped tank body is The interior of the groove body is provided with a partition.

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