阅读说明：本技术 污水处理装置及衣物处理系统 (Sewage treatment device and clothes treatment system ) 是由 杨青波 王桑龙 戴文娟 巫志远 高源� 于 2018-08-30 设计创作，主要内容包括：本发明涉及污水处理领域,公开了一种污水处理装置及衣物处理系统,所述污水处理装置包括直流电源(10)、用于连接污水源的污水排水管(20)、与所述污水排水管(20)连通的电化学污水处理单元(30),所述电化学污水处理单元(30)中设置有金属电极板(31)以及电催化氧化电极(32),所述金属电极板(31)与电催化氧化电极(32)均与所述直流电源(10)电连接,所述电化学污水处理单元(30)的上部设置有第一排渣口(33),所述电化学污水处理单元(30)的底部设置有第二排渣口(34)。利用本发明的污水处理装置能够快速去除洗衣废水中表面活性剂、浊度以及COD,而且本发明中不需要额外添加药剂和鼓入空气,结构简单、容易实现。(The invention relates to the field of sewage treatment, and discloses a sewage treatment device and a clothes treatment system, wherein the sewage treatment device comprises a direct current power supply (10), a sewage drain pipe (20) for connecting a sewage source, and an electrochemical sewage treatment unit (30) communicated with the sewage drain pipe (20), a metal electrode plate (31) and an electrocatalytic oxidation electrode (32) are arranged in the electrochemical sewage treatment unit (30), the metal electrode plate (31) and the electrocatalytic oxidation electrode (32) are both electrically connected with the direct current power supply (10), a first slag discharge port (33) is formed in the upper part of the electrochemical sewage treatment unit (30), and a second slag discharge port (34) is formed in the bottom of the electrochemical sewage treatment unit (30). The sewage treatment device can quickly remove the surfactant, turbidity and COD in the laundry wastewater, does not need to add extra medicament and blow air, and has simple structure and easy realization.)

1. The utility model provides a sewage treatment device, characterized in that, sewage treatment device include DC power supply (10), be used for connecting the sewage drain pipe (20) of sewage source, with electrochemistry sewage treatment unit (30) of sewage drain pipe (20) intercommunication, be provided with metal electrode board (31) and electrocatalytic oxidation electrode (32) in electrochemistry sewage treatment unit (30), metal electrode board (31) and electrocatalytic oxidation electrode (32) all with DC power supply (10) electricity is connected, the upper portion of electrochemistry sewage treatment unit (30) is provided with first row cinder notch (33), the bottom of electrochemistry sewage treatment unit (30) is provided with second row cinder notch (34).

2. The sewage treatment apparatus according to claim 1, wherein a filtering unit (40) is provided at a bottom of the electrochemical sewage treatment unit (30), and a first drain pipe (50) for discharging filtered water is provided at a position of the electrochemical sewage treatment unit (30) where the filtering unit (40) is provided.

3. The sewage treatment device according to claim 1, wherein a scum pipe (33a) is connected to the first scum outlet (33), and a second drain pipe (34a) is provided to the second scum outlet (34).

4. Sewage treatment plant according to claim 3, characterised in that said second drain pipe (34a) is provided with a first control valve (61).

5. Sewage treatment plant according to claim 1, characterised in that a second control valve (62) is arranged on the sewage drain pipe (20).

6. A laundry treatment system, characterized in that, the laundry treatment system comprises a laundry treatment drum (70) for containing clothes and the sewage treatment device of any one of claims 1, 3-5, the sewage discharge port of the laundry treatment drum (70) is communicated with the sewage discharge pipe (20).

7. The laundry treatment system according to claim 6, wherein the electrochemical sewage treatment unit (30) is provided at a bottom thereof with a filtering unit (40), and a first drain pipe (50) for draining filtered water is provided at a position of the electrochemical sewage treatment unit (30) where the filtering unit (40) is provided.

8. The laundry treatment system according to claim 7, characterized in that the first drain pipe (50) is connected to a water inlet (71) of the laundry treatment system, and a suction unit (80) is provided on the first drain pipe (50).

9. Laundry treatment system according to any of claims 6-8, characterized in that it comprises a control unit capable of controlling the switching of the DC power source (10).

10. The laundry treatment system of claim 9, wherein the laundry treatment system is a washing machine.

Technical Field

The invention relates to sewage treatment, in particular to a sewage treatment device and a clothes treatment system.

Background

With the development of economic technology, environmental pollution, such as water pollution, is more and more serious, and in order to treat the environment, the national regulation requires that the discharge of sewage meets certain requirements. Therefore, in order to meet the sewage discharge requirement, the laundry wastewater needs to meet certain requirements to be discharged, and for this reason, the laundry wastewater needs to be purified to be discharged.

At present, the laundry wastewater is mainly purified by a medicament coagulation-flocculation method and a biological treatment method. That is, the organic matter in the laundry waste water is removed by adding the chemical to the laundry waste water.

However, the coagulation-flocculation method requires a special chemical addition system and flocculation facility, is costly and complicated in equipment, and cannot degrade the surfactant in the laundry wastewater. The biological treatment method has the defects of low pollutant load, large occupied area, long treatment time, lack of intermittent operability and difficulty in removing phosphate and surfactant in the laundry wastewater.

Disclosure of Invention

The invention aims to solve the problems of high cost, complex equipment, long treatment time and incapability of completely removing harmful substances in wastewater in the prior art, and provides a sewage treatment device which can quickly remove the harmful substances in the wastewater.

In order to achieve the above object, in one aspect, the present invention provides a sewage treatment apparatus, which includes a dc power supply, a sewage drain pipe for connecting a sewage source, and an electrochemical sewage treatment unit communicated with the sewage drain pipe, wherein a metal electrode plate and an electrocatalytic oxidation electrode are disposed in the electrochemical sewage treatment unit, the metal electrode plate and the electrocatalytic oxidation electrode are both electrically connected to the dc power supply, a first slag discharge port is disposed at an upper portion of the electrochemical sewage treatment unit, and a second slag discharge port is disposed at a bottom portion of the electrochemical sewage treatment unit.

Preferably, a filtering unit is arranged at the bottom of the electrochemical sewage treatment unit, and a first drainage pipe for discharging filtered water is arranged at the position of the electrochemical sewage treatment unit where the filtering unit is arranged.

Preferably, the first slag discharge port is connected with a scum discharge pipe, and the second slag discharge port is provided with a second drain pipe.

Preferably, a first control valve is arranged on the second water discharge pipe.

Preferably, a second control valve is arranged on the sewage drainage pipe.

The invention provides a clothes treatment system, which comprises a clothes treatment drum for containing clothes and the sewage treatment device, wherein a sewage discharge port of the clothes treatment drum is communicated with the sewage discharge pipe.

Preferably, a filtering unit is arranged at the bottom of the electrochemical sewage treatment unit, and a first drainage pipe for discharging filtered water is arranged at the position of the electrochemical sewage treatment unit where the filtering unit is arranged.

Preferably, the first drain pipe is connected to a water inlet of the laundry treating system, and a suction unit is provided on the first drain pipe.

Preferably, the laundry treating system includes a control unit capable of controlling on/off of the dc power source.

Preferably, the laundry treating system is a washing machine.

The sewage treatment device can quickly remove the surfactant, turbidity and COD in the laundry wastewater, does not need to add extra medicament and blow air, and has simple structure and easy realization.

Drawings

Fig. 1 is a schematic structural view of a laundry treating system according to an embodiment of the present invention;

FIG. 2 is a schematic view of a sewage treatment apparatus provided by the present invention for testing the effect of the electrocoagulation time on COD in sewage and the removal rate of COD;

FIG. 3 is a schematic of the effect of electroflocculation time on COD and COD removal rate using electroflocculation conditions alone;

FIG. 4 is a schematic view of a sewage treatment apparatus provided by the present invention for testing the effect of the electrocoagulation time on COD in sewage and the removal rate of COD;

FIG. 5 is a schematic representation of the effect of electroflocculation time on turbidity in sewage and turbidity removal rate using electroflocculation conditions alone;

FIG. 6 is a schematic diagram of the use of the sewage treatment plant provided by the present invention to test the effect of electroflocculation time on LAS and LAS removal in sewage;

FIG. 7 is a schematic representation of the effect of electroflocculation time on LAS and LAS removal rate in wastewater using electroflocculation conditions alone.

Description of the reference numerals

10-a direct current power supply; 20-sewage drain pipe;

30-an electrochemical sewage treatment unit; 31-a metal electrode plate;

31 a-metal electrode plate counter electrode; 32-electrocatalytic oxidation electrode;

32 a-electrocatalytic oxidation of the corresponding electrode; 33-a first slag discharge port;

33 a-a scum pipe; 34-a second slag discharge port;

34 a-a second drain; 40-a filtration unit;

50-a first drain pipe; 61-a first control valve;

62-a second control valve; 70-a laundry treatment drum;

71-a water inlet; 80-a suction unit;

90-water inlet pipe; 100-washing machine;

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, use of directional terms such as "upper, lower, left, right, top, bottom" is generally made with respect to the orientation shown in the drawings or with respect to the positional relationship of the components with respect to each other in the vertical, or gravitational direction. The term "inside" and "outside" refer to the inside and the outside of the contour of each member itself. In addition, "a plurality" referred to in the present invention means two or more and includes two.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to one aspect of the present invention, as shown in fig. 1, a sewage treatment apparatus according to an embodiment of the present invention includes a dc power supply 10, a sewage drain pipe 20 for connecting a sewage source, and an electrochemical sewage treatment unit 30 in communication with the sewage drain pipe 20, wherein a metal electrode plate 31 and an electrocatalytic oxidation electrode 32 are disposed in the electrochemical sewage treatment unit 30, the metal electrode plate 31 (for example, metal such as iron, aluminum, etc.) and the electrocatalytic oxidation electrode 32(32a is an electrocatalytic oxidation counter electrode) are both electrically connected to the dc power supply 10, a first slag discharge port 33 is disposed at an upper portion of the electrochemical sewage treatment unit 30, and a second slag discharge port 34 is disposed at a bottom portion of the electrochemical sewage treatment unit 30.

In the present invention, Al can be generated in the electrochemical wastewater treatment unit 30 by using a metal such as iron or aluminum as an anode and 31a as a metal electrode plate corresponding electrode (which can also be considered as a cathode) in the figure under the action of direct current³⁺、Fe²⁺The multi-valence ions can form a series of multi-core hydroxyl complexes and hydroxide colloids through hydrolysis and polymerization, the substances have adsorption and condensation effects, pollutants such as detergent, oil stain, suspended matters, bacteria, viruses and the like in the sewage generate large floccules, the sewage is electrolyzed under the action of the substances, oxygen and hydrogen are continuously generated by electrodes to form micro bubbles with adhesive performance, and the flocculent suspended matters are brought to the water surface in the floating process of the bubbles, so that the aim of removing the pollutants is fulfilled, and the aim of removing the pollutants from the sewage is fulfilledAnd (4) purifying. Meanwhile, pollutants such as flocs on the inner wall of the electrochemical sewage treatment unit 30 complete the cleaning of the electric flocculation device under the flocculation action of the colloid and the impact of the micro bubbles.

The following compares the sewage treatment device in the prior art with the sewage treatment device in the present invention by specific embodiments:

the test conditions are as follows: taking aluminum as an anode, taking laundry wastewater (of course, kitchen wastewater, wash basin wastewater, bath wastewater and other domestic sewage treatment), wherein the water quality indexes are as follows: the turbidity is 153NTU, COD 1173mg/L and LAS concentration is 136mg/L, which are respectively treated by the sewage treatment device in the prior art and the sewage treatment device in the invention.

Specifically, when sewage is treated by the sewage treatment apparatus of the present invention, the following reaction occurs in the sewage treatment unit 30:

1) electrocatalytic oxidation electrode anode reaction: 2H₂O→2[O]+4H⁺+4e

2) Reaction of the soluble aluminum anode electrode plate: al → Al³⁺+4e

3) Because the laundry wastewater contains certain Cl^-The electrocatalytic oxidation electrode anode simultaneously reacts as follows:

2Cl^-→Cl₂+2e

Cl₂+H₂O→HClO+H⁺+Cl^-

HClO→H⁺+ClO^-

4) the main reactions that occur with the soluble aluminum cathode electrode plate are: 2H₂O+2e→H₂+2OH^-

In this embodiment, direct oxidation of the anode surface and Cl^-The indirect oxidation of the catalyst can effectively degrade soluble organic matters and reductive inorganic matters in the wastewater. At the same time, Al³⁺The hydrolytic polymerization product of the composite material plays roles of adsorption and electric neutralization, adsorption bridging and net trapping, and the mixing effect of micro-bubbles released from the surface of the electrode accelerates the collision process of particles, thereby being beneficial to quickly removing colloid chemical combination in wastewaterThe purpose of quickly treating the laundry wastewater is achieved.

That is, in the present invention, electrocoagulation, electroflotation and electrochemical catalytic oxidation are organically combined together, and electrocoagulation for Al production is integrated³⁺And the high-efficiency flocculation effect of the hydrolyzed polymerization product, the air flotation effect of tiny bubbles generated by an insoluble electrode and the electrochemical oxidation effect of a catalytic oxidation electrode. When the sewage is treated by the conventional sewage treatment apparatus, specifically, the sewage is treated by the electric flocculation method alone, as shown in fig. 2 and 3, fig. 4 and 5 and fig. 6 and 7 show that the sewage treatment apparatus of the present invention and the conventional sewage treatment apparatus respectively compare the removal rate of COD and COD, the removal rate of turbidity and turbidity, and the removal rate of LAS and COD in the laundry wastewater. In addition, the invention does not need to add extra medicament and blow air, has simple structure and easy realization, and can be easily combined into the washing machine to realize automatic control in practical application.

Wherein, the bottom of the electrochemical sewage treatment unit 30 is provided with a filtering unit 40, and a first drainage pipe 50 for discharging filtered water is arranged at the position of the electrochemical sewage treatment unit 30 where the filtering unit 40 is arranged. This can filter out the precipitate in the electrochemical sewage treatment unit 30 to reuse the water discharged through the first drain pipe 50, thereby enabling water saving.

Further, after the sewage is treated, the relatively light scum in the electrochemical sewage treatment unit 30 floats on the upper side in the electrochemical sewage treatment unit 30, and the relatively heavy floc is settled on the bottom in the electrochemical sewage treatment unit 30, in order to facilitate the discharge of the scum and the floc, the scum discharge pipe 33a is connected to the first scum discharge port 33, and the second scum discharge port 34a is provided with the second drainage pipe 34a, so that the scum is discharged through the scum discharge pipe 33a, and the floc settled on the bottom and the residual water in the electrochemical sewage treatment unit 30 can be discharged through the second drainage pipe 34 a.

For the convenience of control, the second water discharge pipe 34a is provided with a first control valve 61. Similarly, the sewage drainage pipe 20 is provided with a second control valve 62. In this way, the displacement in the second drain pipe 34a can be controlled by the first control valve 61, and the sewage inflow can be controlled by the second control valve 62.

According to another aspect of the present invention, the laundry treating system according to the embodiment of the present invention comprises a laundry treating drum 70 for containing clothes, and the above-mentioned sewage treating apparatus, wherein the sewage outlet of the laundry treating drum 70 is communicated with the sewage draining pipe 20.

Wherein the laundry treating system may be a washing machine. In this way, the first drain pipe 50 may be connected to the water inlet 71 of the laundry treating system, and the first drain pipe 50 is provided with the pumping unit 80, for example, the pumping unit 80 is a water pump. In addition, in order to realize the automatic control, the laundry treating system includes a control unit capable of controlling the on/off of the dc power supply 10.

For a further understanding of the present invention, the sewage treatment process of the present invention will be described in detail below:

as shown in fig. 1, water may be injected into the laundry treating drum 70 through the water inlet pipe 90, and after the washing process of the washing machine 100 is finished, the second control valve 62 is opened, the sewage treatment unit 30 is started, the sewage is discharged from the sewage discharge port of the laundry treating drum 70, and enters the electrochemical sewage treatment unit 30 through the sewage drain pipe 20, sewage is treated in the electrochemical sewage treatment unit 30, scum can be discharged from a scum discharge pipe 33a through a first scum discharge port 33, floc can be discharged from a second drain pipe 34a through a second scum discharge port 34, when scum is discharged from the scum discharge pipe 33a, after the electrochemical reaction is finished, the suction unit 80 is started, and the clean water filtered by the filtering unit 40 is circulated into the laundry treating drum 70 of the washing machine 100 through the first drain pipe 50 by the water pump, and the filtered water circulated into the laundry treating drum 70 may be used for rinsing.

In the invention, the washing wastewater is purified and the washing waste water is recycled by the special flow channel design through the flocculation and adsorption of the polyvalent metal ions dissolved by the induced current in the sewage treatment unit 30 and the hydrolytic polymerization form thereof, the electric floating action of micro-bubbles generated by the insoluble mesh electrode and the electric catalytic oxidation action of the electric catalytic oxidation electrode. That is, the invention mainly integrates the electric flocculation, the electric air flotation and the electric catalytic oxidation in an electrochemical reactor to finish the coagulation, the air flotation, the adsorption and the oxidation of the laundry wastewater, so that the water quality is purified, and the sewage treatment speed is high.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.