CN115353175A

CN115353175A - Organic wastewater treatment device

Info

Publication number: CN115353175A
Application number: CN202211077324.6A
Authority: CN
Inventors: 王西玉; 马建锋; 郭北洋; 朱方; 彭明国
Original assignee: Changzhou University
Current assignee: Changzhou University
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-11-18
Anticipated expiration: 2042-09-05
Also published as: WO2023241725A1; CN115353175B

Abstract

The invention relates to the technical field of wastewater treatment equipment, in particular to a treatment device for organic wastewater, which comprises a barrel body, an input pipe and a cylinder, wherein the barrel body is internally provided with a cavity, the input pipe is used for conveying chlorine, the barrel body is respectively provided with an inlet and an outlet, the cylinder is provided with a through hole penetrating through the inner and outer peripheral walls, the cylinder is arranged in the cavity of the barrel body, an active carbon layer and a calcium sulfite layer which are mutually separated are respectively arranged between the cavity and the cylinder, the cavity is divided into an upper cavity and a lower cavity, a first electrode is arranged in the active carbon layer, when the treatment device is used, an acid-base environment is formed in the equipment through electrolysis, the acid-base environment reacts with the chlorine respectively to generate hypochlorite radicals and sulfate radicals with stronger oxidizing capability, and organic matters in water are degraded, the effect is more thorough than that the chlorine is directly used for degrading the organic matters, the efficiency is higher, meanwhile, the method is simple to control, and the amount of generating the radicals can be controlled through automatic control of voltage.

Description

Organic wastewater treatment device

Technical Field

The invention relates to the technical field of wastewater treatment equipment, in particular to a treatment device for organic wastewater.

Background

A common method for treating sewage by redox is that after oxidant and reducer are added to organic and inorganic substances in the sewage in dissolved state, oxidation and reduction are generated to form harmless substances due to the migration of electrons. Common oxidants include oxygen in air, pure oxygen, bleaching powder, ozone, chlorine and the like, and an oxidation method is mostly used for treating cyanide-containing phenol-containing wastewater. The common reducing agents comprise scrap iron, ferrous sulfate, sodium bisulfite and the like, and the reduction method is mainly used for treating wastewater containing chromium and mercury.

The common oxidant chlorine is mainly used for the disinfection of tap water and the advanced treatment of organic wastewater, and the chlorine escapes due to the slow reaction of the chlorine and water to generate pungent smell; because the reaction speed of the chlorine and the water is low, the consumption of the chlorine in the chlorine treatment process in the actual use process is high, the operation treatment cost is high, the control difficulty is high, and the operation is dangerous.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to solve the problem that the application rate of chlorine is not high due to the fact that active substances are generated slowly in wastewater treatment, a treatment device for organic wastewater is provided.

The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides an organic waste water's processing apparatus, includes that inside has the staving of cavity body, is used for carrying input tube and the drum of chlorine, be provided with import and export on the staving respectively, be provided with the through-hole that runs through inside and outside perisporium on the drum, the drum sets up in the cavity of staving, be provided with the active carbon layer and the calcium sulfite layer of mutual separation between cavity body and the drum respectively to separate into cavity and cavity down with the cavity body, the active carbon in situ is provided with first electrode, first electrode connects to be the positive pole, be provided with the second electrode in the calcium sulfite layer, the second electrode is the negative pole, the input setting of input tube is in the cavity down, import and cavity intercommunication down, be provided with the calcium carbonate packing layer in the cavity, the calcium carbonate packing layer separates into first cavity and the second cavity that sets up from top to bottom with the cavity, export and first cavity intercommunication.

Preferably, in some embodiments, first sieve plates are arranged at the upper end and the lower end of the activated carbon layer and the calcium sulfite layer in the cavity.

In some preferred embodiments, a partition plate is arranged between the activated carbon layer and the calcium sulfite layer, and the partition plate is located between the two first sieve plates.

Preferred embodiments are characterized in that: the first sieve plate is made of an insulating material.

Preferably, in some embodiments, a diversion mechanism for diverting the wastewater to the activated carbon layer and the calcium sulfite layer is arranged in the lower cavity.

In some preferred embodiments, the flow directing means comprises a cone, the cone lying inverted on the cylinder.

Preferably, in some embodiments, the cone has a cone base diameter and a cylinder diameter that are equal.

Preferably, in some embodiments, the input tube is located below the cone.

Preferably, the second cavity is provided with a second sieve plate below the calcium carbonate filler layer.

The invention has the beneficial effects that: when the organic wastewater treatment device is used, an acid-base environment is formed in the device through electrolysis, the acid-base environment reacts with chlorine respectively to generate hypochlorite radicals and sulfate radicals with stronger oxidation capacity, and organic matters in water are degraded, so that the effect is more thorough than that of directly degrading the organic matters by using the chlorine, the efficiency is higher, meanwhile, the method is simple to control, the amount of generated free radicals can be controlled by automatically controlling voltage to adapt to wastewater treatment with different pollution degrees, the operation cost is low, the chlorine dosage is less than half of that of the traditional chlorine treatment process, and the problems of high operation treatment cost, high control difficulty and operation danger caused by large chlorine dosage in the existing chlorine treatment process in the use process are solved.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

fig. 3 is a sectional view B-B of fig. 1.

In the figure: 1. the device comprises a barrel body, 101, a hollow cavity body, 102, an upper cavity body, 1021, a first cavity body, 1022, a second cavity body, 103, a lower cavity body, 2, an inlet, 3, an outlet, 4, an input pipe, 5, an air hole, 6, a first sieve plate, 7, a cylinder, 8, a partition plate, 9, an activated carbon layer, 10, a calcium sulfite layer, 11, an electrode, 12 cones, 13, a calcium carbonate packing layer, 14 and a second sieve plate.

Detailed Description

The invention is described in more detail below with reference to the following examples:

the present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in figures 1-3, a device for treating organic wastewater comprises a cylindrical barrel body 1, a hollow cavity 101 is arranged in the barrel body 1, an inlet 2 and an outlet 3 are respectively arranged at the lower end and the upper end of the barrel body 1, a chlorine input pipe 4 is further arranged at the lowest end of the barrel body 1, the input pipe 4 extends into the barrel body 1, an air hole 5 is formed in the upper surface of the input pipe 4, two first sieve plates 6 made of insulating materials are arranged at the middle lower part of the barrel body 1, a cylinder 7 with a through hole is arranged between the two first sieve plates 6, the diameter of the through hole is small (the water flow resistance is large, but the current can pass through the through hole), so that part of water flows in the cylinder 7 and a circuit can be formed, most of the water flows from the inlet 2 to the outlet 3, the cylinder 7 and the barrel body 1 share the same axis, the space between the two first sieve plates 6, the outer side of the cylinder 7 and the barrel body 1 is vertically divided into two equal parts by a partition plate 8, an activated carbon layer 9 and a calcium sulfite layer 10 are respectively filled in the two parts, electrodes 11 are respectively inserted at two sides, one side electrode 11 of the activated carbon layer 9 is connected with a negative electrode, one side electrode 11 of the calcium sulfite layer 10 is connected with a positive electrode, a cavity body 101 is divided into an upper cavity 102 and a lower cavity 103 by the two parts, sieve holes are uniformly distributed on a first sieve plate 6 and a second sieve plate 14, an inverted cone 12 is connected below a cylinder 7, the cone 12 is used for guiding (leading chlorine and entered wastewater to be treated from the first sieve plate 6 to the two parts), the diameter of the cone bottom of the cone 12 is equal to the diameter 7 of the cylinder, the pointed top of the cone 12 is positioned above an input pipe 4, a calcium carbonate packing layer 13 is arranged below an outlet 3 and above the first sieve plate 6, and the calcium carbonate packing layer 13 is used for absorbing sulfate flowing from the lower part, the calcium carbonate packing layer 13 is located in the upper cavity 102 and divides the upper cavity into a first cavity 1021 and a second cavity 1022 which are arranged up and down, the second cavity 1022 is provided with a second sieve plate 14, and the second sieve plate 14 is located below the calcium carbonate packing layer 13 and is used for supporting the calcium carbonate packing layer 13.

During operation, let in organic waste water to be treated from import 2 of staving 1 below, chlorine lets in from input tube 4, and chlorine forms little bubble upward movement through gas pocket 5, and wherein chlorine lets in the volume and is: when one cubic meter of wastewater is treated, the input amount of chlorine is 100L-5000L, the power supply of each electrode 11 is switched on, the materials of the two electrodes 11 are stainless steel, and the voltage is 20-35V;

the input pipe 4 introduces chlorine into the wastewater to be treated and moves upwards under the diversion action of the cone 12, and the chlorine passes through the activated carbon layer 9 and the calcium sulfite layer 10 between the two first sieve plates 6; the electrode 11 in the activated carbon layer 9 and the calcium sulfite layer 10 generates H at the positive electrode of the electrode 11 due to the action of the electrolyzed water ⁺ And an acidic environment is formed near the electrode 11, while the electrolyzed water generates OH-at the negative electrode of the electrode 11 and an alkaline environment is formed near the electrode 11; when the upward-moving chlorine passes near the negative electrode of the electrode 11, the chlorine rapidly forms hypochlorite with stronger oxidizing power in an alkaline environment, and when the upward-moving chlorine passes near the positive electrode of the electrode 11, H generated by the positive electrode of the electrode 11 ⁺ The formed acid environment enables calcium sulfite around the anode to be decomposed into sulfite, sulfite and chlorine gas quickly react to generate sulfate radicals, the sulfate radicals have super strong oxidizing capability, the sulfate radicals can quickly react with organic matters after contacting with the organic matters, carbon dioxide and water are generated after the sulfate radicals react with the organic matters to generate carbonic acid, the carbonic acid reacts with a calcium carbonate packing layer 13 to generate calcium bicarbonate, the calcium bicarbonate is dissolved in the water to react with the sulfate radicals generated by the reaction to form calcium sulfate particles, the organic matters are removed by oxidation, and the treated water is finally discharged through an outlet 3.

In light of the foregoing description of the preferred embodiment of the present invention, it is intended that the appended claims be interpreted as including all such alterations and modifications as fall within the true spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An organic wastewater treatment device is characterized in that: comprises a barrel body (1) with a hollow cavity body (101) inside, an input pipe (4) used for conveying chlorine gas and a cylinder (7), the barrel body (1) is respectively provided with an inlet (2) and an outlet (3), the cylinder (7) is provided with a through hole penetrating through the inner and outer peripheral walls, the cylinder (7) is arranged in a hollow cavity (101) of the barrel body (1), an active carbon layer (9) and a calcium sulfite layer (10) which are separated from each other are respectively arranged between the cavity body (101) and the cylinder (7), and divides the cavity body (101) into an upper cavity body (102) and a lower cavity body (103), a first electrode (11) is arranged in the active carbon layer (9), the first electrode (11) is connected with a positive electrode, a second electrode (11) is arranged in the calcium sulfite layer (10), the second electrode (11) is a negative electrode, the input end of the input tube (4) is arranged in the lower cavity (103), the inlet (2) is communicated with the lower cavity (103), a calcium carbonate packing layer (13) is arranged in the upper cavity (102), the calcium carbonate packing layer (13) divides the upper cavity (102) into a first cavity (1021) and a second cavity (1022) which are arranged up and down, and the outlet (3) is communicated with the first cavity (1021).

2. The apparatus for treating organic wastewater according to claim 1, wherein: and first sieve plates (6) are arranged at the upper end and the lower end of the activated carbon layer (9) and the calcium sulfite layer (10) in the cavity body (101).

3. The apparatus for treating organic wastewater according to claim 2, wherein: a partition plate (8) is arranged between the activated carbon layer (9) and the calcium sulfite layer (10) to separate the activated carbon layer from the calcium sulfite layer, and the partition plate (8) is positioned between the two first sieve plates (6).

4. The apparatus for treating organic wastewater according to claim 1, wherein: the first sieve plate (6) is made of an insulating material.

5. The apparatus for treating organic wastewater according to claim 1, wherein: and a flow guide mechanism for guiding the wastewater to the activated carbon layer (9) and the calcium sulfite layer (10) is arranged in the lower cavity (103).

6. The apparatus for treating organic wastewater according to claim 5, wherein: the flow guide mechanism comprises a cone (12), and the cone (12) is inversely arranged on the cylinder (7).

7. The apparatus for treating organic wastewater according to claim 6, wherein: the diameter of the cone bottom of the cone (12) is equal to that of the cylinder (7).

8. The apparatus for treating organic wastewater according to claim 7, wherein: the inlet pipe (4) is located below the cone (12).

9. The apparatus for treating organic wastewater according to claim 1, wherein: and a second sieve plate (14) is arranged below the calcium carbonate packing layer (13) in the second cavity (1022).