Iron-carbon micro-electrolysis sewage treatment equipment

Abstract

The utility model discloses iron-carbon micro-electrolysis sewage treatment equipment which comprises an iron-carbon treatment barrel, a coagulation treatment barrel, a high-power sewage pump, a special treatment agent barrel, a variable-frequency Roots blower and a pipeline group. The iron-carbon micro-electrolysis sewage treatment equipment which is more reasonable, perfect and low in cost is obtained through improvement, the novel catalyst-containing iron-carbon alloy filler used in the iron-carbon micro-electrolysis sewage treatment equipment can greatly improve the pollutant degradation capacity, and the coagulation treatment barrel is provided with a variable-frequency medicine stirring machine which can improve the flowability of a water body in the working process; according to the invention, the generation and hardening conditions of iron sludge are reduced to a certain extent, H2O2 is added as a treatment agent, the Fenton treatment effect can be realized in the micro-electric energy process, meanwhile, residual H2O2 is not generated to influence the subsequent biochemical treatment, the chemical oxygen demand value of the treated water to be discharged can be reduced, the biochemical oxygen demand value is increased, and the treatment effect is improved. The subsequent biochemical treatment is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of iron-carbon micro-electrolysis, and particularly relates to a sewage treatment device by iron-carbon micro-electrolysis. Background Technique

[0002] Iron-carbon micro-electrolysis is a good process for treating wastewater by using the principle of metal corrosion to form a primary battery, also known as internal electrolysis method, iron filings filtration method, etc. The micro-electrolysis technology is an ideal process for treating high-concentration organic wastewater at present, also known as internal electrolysis method. Without power supply, it uses the potential difference of 1.2V generated by the micro-electrolysis materials filled in the wastewater to electrolyze the wastewater to achieve the purpose of degrading organic pollutants.

[0003] At present, the iron-carbon micro-electrolysis equipment technology has the following problems: the iron-carbon bed is easy to passivate and agglomerate, the iron sludge is blocked, and the sludge volume is large; the micro-electrolysis materials need to be replaced frequently, which not only has a large workload and high cost, but also affects the treatment effect and efficiency of wastewater.

[0004] Therefore, it is necessary to design an iron-carbon micro-electrolysis treatment device that can solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems put forward in the background technique, and a sewage treatment device by iron-carbon micro-electrolysis is designed.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows: a sewage treatment device by iron-carbon micro-electrolysis includes an iron-carbon treatment barrel, a coagulation treatment barrel, a high-power sewage pump, a special treatment reagent barrel, a frequency conversion Roots blower and a pipeline group. It is characterized in that a microbubble aeration pipe is arranged at the bottom of the inner cavity of the iron-carbon treatment barrel, and the microbubble aeration pipe is externally connected with a frequency conversion Roots blower through a microbubble aeration supply pipeline to work; an iron-carbon module is erected above the microbubble aeration pipe through an iron-carbon support platform; the iron-carbon treatment barrel and the first special treatment reagent barrel are interconnected through a treatment reagent A dosing pipeline equipped with a metering dosing pump; an iron-carbon barrel sewage discharge port is designed at the bottom of the iron-carbon treatment barrel, and the iron-carbon barrel sewage discharge port is connected with the coagulation treatment barrel through a treatment water body discharge pipeline with an acid and alkali resistant electric switch valve and a second high-power sewage pump; the coagulation treatment barrel is equipped with a plurality of special treatment reagent barrels, and each special treatment reagent barrel is provided with an independent pipeline with a dosing pump to be connected to the top of the coagulation treatment barrel for extraction and addition; the coagulation treatment barrel is equipped with a frequency conversion stirrer, and it is also equipped with a third high-power sewage pump and a fourth high-power sewage pump with independent pipelines to extract and treat the sinking sludge and the clear liquid water body.

[0007] Preferably, the top of the iron-carbon treatment barrel is also connected with a front-end treatment water body inlet pipeline equipped with a first high-power sewage pump to be connected with the inlet pipeline.

[0008] Preferably, the iron-carbon treatment tank is equipped with a pH detector, a dissolved oxygen rate detector and a liquid level transmitter to monitor the water body in the tank, while the coagulation treatment tank is provided with a pH detector and a liquid level transmitter for monitoring.

[0009] Preferably, the first special treatment chemical tank supporting the iron-carbon treatment tank is only provided with a liquid level transmitter, while the multiple special treatment chemical tanks supporting the coagulation treatment tank are equipped with a liquid level transmitter and a variable-frequency chemical agitator.

[0010] Preferably, the pipeline group includes a pipeline for the water body to enter the front-end treatment, a pipeline for adding treatment chemical A, a pipeline for discharging the treated water body, a pipeline for supplying microbubble aeration, a pipeline for discharging the water body with sinking sludge, a pipeline for discharging the supernatant water body, a pipeline for adding treatment chemical B, a pipeline for adding treatment chemical C and a pipeline for adding treatment chemical D.

[0011] Preferably, the third high-power sewage pump is connected to the sewage discharge port of the coagulation treatment tank through the pipeline for discharging the water body with sinking sludge equipped with an acid and alkali resistant electric switch valve.

[0012] Preferably, the fourth high-power sewage pump is connected to the clear liquid discharge port of the coagulation treatment tank through the pipeline for discharging the supernatant water body equipped with an acid and alkali resistant electric switch valve.

[0013] Preferably, the horizontal height of the clear liquid discharge port should be higher than that of the sewage discharge port of the coagulation tank.

[0014] Preferably, the iron-carbon module is an iron-carbon alloy filler containing a catalyst.

[0015] Compared with the prior art, the advantages of the present utility model are as follows: The present utility model obtains a more reasonable, perfect and low-cost iron-carbon microelectrolysis sewage treatment device through improvement. The novel iron-carbon alloy filler containing a catalyst used in the present utility model can greatly improve the degradation ability of pollutants. And the coagulation treatment tank is equipped with a variable-frequency chemical agitator, which can increase the fluidity of the water body during the working process, reduce the generation and caking of iron mud to a certain extent, and add H2O2 as a treatment chemical, which can achieve the Fenton treatment effect during the micro-electric energy process, and at the same time will not produce residual H2O2 to affect the subsequent biochemical treatment. The water body to be discharged after treatment can reduce the chemical oxygen demand value and increase the biochemical oxygen demand value, which is beneficial to the subsequent biochemical treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] As Figure 1 shown, the present invention is a sewage treatment device by iron-carbon microelectrolysis, which mainly includes an iron-carbon treatment barrel (1), a coagulation treatment barrel (13), a high-power sewage pump, a special treatment chemical barrel, a variable-frequency Roots blower (5) and a pipeline group. The pipeline group refers to each independent pipeline for connection and communication, specifically including a front-end treated water inlet pipeline (20), a treatment chemical A dosing pipeline (21), a treated water discharge pipeline (22), a microbubble aeration air supply pipeline (23), a settled sludge water discharge pipeline (24), a supernatant water discharge pipeline (25), a treatment chemical B dosing pipeline (26), a treatment chemical C dosing pipeline (27) and a treatment chemical D dosing pipeline (28).

[0019] The iron-carbon treatment barrel (1) and the coagulation treatment barrel (13) can be distinguished as the front-end treatment and the middle-stage treatment, and the subsequent treatment is to separately extract the settled sludge and the supernatant water through the third high-power sewage pump (113) and the fourth high-power sewage pump (114) for subsequent treatment. Therefore, the designs of the iron-carbon treatment barrel (1) and the coagulation treatment barrel (13) are different.

[0020] Inside the iron-carbon treatment barrel (1), a microbubble aeration pipe (4) is arranged at the bottom of the inner cavity. The microbubble aeration pipe (4) is externally connected to a variable-frequency Roots blower (5) through a microbubble aeration air supply pipeline (23) to work. Above the microbubble aeration pipe (4), an iron-carbon module (2) is erected through an iron-carbon support platform (3). The iron-carbon module (2) is an iron-carbon alloy filler containing a catalyst. The iron-carbon treatment barrel (1) and the first special treatment chemical barrel (9) are interconnected through a treatment chemical A dosing pipeline (21) equipped with a metering dosing pump (10). The bottom of the iron-carbon treatment barrel (1) is designed with an iron-carbon barrel sewage discharge port, and the iron-carbon barrel sewage discharge port is connected to the coagulation treatment barrel (13) through a treated water discharge pipeline (22) equipped with an acid and alkali resistant electric switch valve (12) and a second high-power sewage pump (112). Among them, the top of the iron-carbon treatment barrel (1) is also connected to an inlet pipeline (110) through a front-end treated water inlet pipeline (20) equipped with a first high-power sewage pump (111). And the iron-carbon treatment barrel (1) is equipped with a PH detector (6), a dissolved oxygen rate detector (7) and a liquid level transmitter (8) to monitor the water body in the iron-carbon treatment barrel (1).

[0021] The coagulation treatment tank (13) is equipped with a plurality of special treatment chemical tanks, and each special treatment chemical tank is provided with an independent pipeline with a chemical dosing pump (17) to communicate with the top of the coagulation treatment tank (13) for extraction and addition. And from Figure 1 it can be known that there are three special treatment chemical tanks, namely the second special treatment chemical tank (15), the third special treatment chemical tank (18) and the fourth special treatment chemical tank (19), all of which are equipped with a variable-frequency chemical agitator (16) and a liquid level transmitter (8), and the independent pipelines corresponding to them in sequence are the chemical B dosing pipeline (26), the chemical C dosing pipeline (27) and the chemical D dosing pipeline (28). One of the special treatment chemical tanks is loaded with H202 as the treatment chemical. Compared with the traditional chemical formula, the addition of H202 as the treatment chemical can achieve the Fenton treatment effect during the micro-electric energy process, and at the same time, it will not produce residual H202 to affect the subsequent biochemical treatment. The water body to be discharged after treatment can reduce the chemical oxygen demand value and increase the biochemical oxygen demand value, which is beneficial to the subsequent biochemical treatment. A PH detector (6) and a liquid level transmitter (8) are also provided for monitoring, while the first special treatment chemical tank (9) is only provided with a liquid level transmitter (8). The purpose of setting the liquid level transmitter (8) for each tank is to monitor the liquid level of the chemical in real time, so as to ensure that an electric signal to stop working is sent when it is lower than the set value, and to avoid the sewage being subjected to the subsequent treatment without effective treatment due to the lack of chemical addition.

[0022] It is worth mentioning that in order to reduce the generation and caking of iron sludge in the present utility model, the coagulation treatment tank (13) is equipped with a variable-frequency agitator (14) to increase the fluidity of the water body during the working process. And the coagulation treatment tank (13) is also equipped with a third high-power sewage pumping pump (113) and a fourth high-power sewage pumping pump (114) with independent pipelines to extract and treat the sinking sludge and the supernatant water body. The independent pipelines are respectively the sinking sludge water body discharge pipeline (24) and the supernatant water body discharge pipeline (25), and their connection positions in the coagulation treatment tank (13) are designed with one high and one low. Specifically, the horizontal height of the supernatant discharge port should be higher than the sewage discharge port of the coagulation tank. The purpose is to prevent mis-extraction during the respective extraction processes of the two, and to distinguish the supernatant and the sinking sludge through the height difference, so as to achieve efficient pumping and drainage, so as to facilitate driving to the next treatment process without re-separating and filtering.

[0023] The general treatment process of the present utility model is as follows:

[0024] 1. Sewage is pumped into the iron-carbon treatment tank (1) by the first high-power sewage pumping pump (111) serving as the front-end sewage pumping pump;

[0025] 2. When the liquid level transmitter (8) set on the iron-carbon treatment barrel (1) detects that the liquid level reaches the set level, it sends a working signal to the liquid level Roots blower (5) to drive the microbubble aeration pipe (4) to start working;

[0026] 3. The system supporting this utility model adjusts and controls the pH value in the iron-carbon treatment barrel (1) to be around 3 - 4 through the pH detector (6), and then draws and adds hydrogen peroxide from the first special treatment chemical barrel (9) according to the COD amount. Specifically, it is added through the metering chemical feed pump (10) with the metered chemicals. After adding, it cooperates with the work of the microbubble aeration pipe (4), and the treatment time is generally about 1 - 2 hours;

[0027] 4. When the treatment time node arrives, the water body in the iron-carbon treatment barrel (1) after treatment enters the coagulation treatment barrel (13) in the middle section through the second high-power sewage pump (112);

[0028] 5. The liquid level transmitter (8) configured in the coagulation treatment barrel (13) detects the drawn water body in real time to control the height of the incoming water level;

[0029] 6. The variable-frequency mixer (14) in the coagulation treatment barrel (13) starts working;

[0030] 7. Through the chemical feed pump (17), special treatment chemicals B / C / D are drawn and added from the second special treatment chemical barrel (15), the third special treatment chemical barrel (18), and the fourth special treatment chemical barrel (19) respectively according to the process;

[0031] 8. After the addition of each chemical is completed, the work of the variable-frequency mixer (14) is stopped;

[0032] 9. Wait for the water body in the coagulation treatment barrel (13) to enter the static state;

[0033] 10. After the static time arrives, the fourth high-power sewage pump (114) is started to pump the water body into another treatment device for post-treatment;

[0034] 11. After the supernatant water pumping is completed, the third high-power sewage pump (113) is started to pump this part of the water body into the special treatment device for treatment.

[0035] This utility model is equipped with a treatment system, and all the equipment can operate automatically according to the set scheme of the automation system. In addition to using the new iron-carbon alloy filler containing catalyst, which can significantly improve the removal ability of pollutants, this utility model also significantly reduces the caking situation and the generation of iron sludge through reasonable structure and device design, and also introduces H2O2 as a treatment chemical, realizing the improvement of the B / C value while reducing the COD, which is beneficial for subsequent biochemical treatment.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0038] In the present utility model, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description referring to terms such as "one solution", "some solutions", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the solution or example are included in at least one solution or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same solution or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more solutions or examples.

Claims

1. A sewage treatment device by iron-carbon micro-electrolysis, comprising an iron-carbon treatment barrel (1), a coagulation treatment barrel (13), a high-power sewage pump, a special treatment chemical barrel, a variable-frequency Roots blower (5) and a pipeline group, characterized in that, At the bottom of the inner cavity of the iron-carbon treatment barrel (1), a microbubble aeration pipe (4) is provided. The microbubble aeration pipe (4) is externally connected to a variable-frequency Roots blower (5) through a microbubble aeration air supply pipe (23) to operate; above the microbubble aeration pipe (4), an iron-carbon module (2) is erected through an iron-carbon support platform (3); the iron-carbon treatment barrel (1) and the first special treatment chemical agent barrel (9) are interconnected through a treatment chemical agent A dosing pipe (21) equipped with a metering dosing pump (10); at the bottom of the iron-carbon treatment barrel (1), an iron-carbon barrel sewage discharge port is designed. The iron-carbon barrel sewage discharge port is connected to a coagulation treatment barrel (13) through a treated water discharge pipe (22) with an acid and alkali resistant electric switch valve (12) and provided with a second high-power sewage pumping pump (112); the coagulation treatment barrel (13) is equipped with multiple special treatment chemical agent barrels, and each special treatment chemical agent barrel is provided with an independent pipe with a dosing pump (17) to be connected to the top of the coagulation treatment barrel (13) for extraction and addition; the coagulation treatment barrel (13) is equipped with a variable-frequency stirrer (14), and it is also equipped with a third high-power sewage pumping pump (113) and a fourth high-power sewage pumping pump (114) with independent pipes to extract and treat the sinking sludge and supernatant water body.

2. The sewage treatment device using iron-carbon microelectrolysis according to claim 1, characterized in that, At the top of the iron-carbon treatment barrel (1), a front-end treated water inlet pipe (20) equipped with a first high-power sewage pumping pump (111) is also connected to the inlet pipe (110).

3. An iron-carbon micro-electrolysis sewage treatment device according to claim 1, characterized in that, The iron-carbon treatment barrel (1) is equipped with a PH detector (6), a dissolved oxygen rate detector (7) and a liquid level transmitter (8) to monitor the water body in the barrel, while the coagulation treatment barrel (13) is provided with a PH detector (6) and a liquid level transmitter (8) for monitoring.

4. An iron-carbon micro-electrolysis sewage treatment device according to claim 1, characterized in that, The first special treatment chemical agent barrel (9) supporting the iron-carbon treatment barrel (1) is only provided with a liquid level transmitter (8), while the multiple special treatment chemical agent barrels supporting the coagulation treatment barrel (13) are equipped with a liquid level transmitter (8) and a variable-frequency chemical agent stirrer (16).

5. The sewage treatment equipment by iron-carbon micro-electrolysis according to claim 1, characterized in that, The pipe group includes a front-end treated water inlet pipe (20), a treatment chemical agent A dosing pipe (21), a treated water discharge pipe (22), a microbubble aeration air supply pipe (23), a sinking sludge water body discharge pipe (24), a supernatant water body discharge pipe (25), a treatment chemical agent B dosing pipe (26), a treatment chemical agent C dosing pipe (27) and a treatment chemical agent D dosing pipe (28).

6. An iron-carbon micro-electrolysis sewage treatment device according to claim 1, characterized in that, The third high-power sewage pumping pump (113) is connected to the coagulation barrel sewage discharge port of the coagulation treatment barrel (13) through a sinking sludge water body discharge pipe (24) with an acid and alkali resistant electric switch valve (12).

7. The sewage treatment equipment by iron-carbon micro-electrolysis according to claim 1, characterized in that, The fourth high-power sewage pumping pump (114) is connected to the supernatant discharge port of the coagulation treatment barrel (13) through a supernatant water body discharge pipe (25) with an acid and alkali resistant electric switch valve (12).

8. An iron-carbon microelectrolysis sewage treatment device according to claim 7, characterized in that, The horizontal height of the supernatant discharge port should be higher than the coagulation barrel sewage discharge port.

9. The sewage treatment equipment by iron-carbon micro-electrolysis according to claim 1, characterized in that The iron-carbon module (2) is an iron-carbon alloy filler containing a catalyst.

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