Sludge supplementing device for wastewater treatment

Abstract

The utility model discloses a sludge supplement device for wastewater treatment, which comprises a wastewater buffer tank and a sludge culture and storage tank which are communicated with each other, the inner cavity of the sludge culture and storage tank is divided into an aerobic zone and an anaerobic zone through a partition plate, the top of the aerobic zone is provided with an integrated sensor, and the bottom of the aerobic zone is communicated with the bottom of the anaerobic zone; a three-phase separator is arranged at the top of the anaerobic zone, and a gas outlet of the three-phase separator is communicated with a biogas water-sealed tank; the aerobic zone and the anaerobic zone are respectively communicated with an activated sludge supplementing pipeline and an anaerobic sludge supplementing pipeline; a controller is arranged on the shell, and a display screen is arranged on the controller. According to the device, homologous wastewater is utilized to effectively domesticate activated sludge similar to flora in a sewage treatment system, and the residual activated sludge is subjected to anaerobic digestion, so that anaerobic sludge is cultured, and the device is relatively high in applicability, can be well used for supplementing sludge to the complex sewage treatment system, and has a wide application prospect. Wastewater and waste gas in the culture process are well treated, and secondary pollution to the environment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment devices, and particularly relates to a sludge supplement device for wastewater treatment. Background Art

[0002] As an efficient and widely used sewage treatment technology, the activated sludge process has remarkable effects in treating various types of sewage. However, during the actual application process, the pollutant load in the sewage may suddenly increase due to various factors, which may not only lead to a decrease in the activity of the activated sludge but also have an adverse impact on the stability and treatment effect of the entire sewage treatment system.

[0003] To solve the above problems, a common practice is to supplement fresh activated sludge into the sewage treatment system. By timely supplementing fresh activated sludge, the number and activity of microorganisms in the activated sludge system can be effectively increased, thereby improving the treatment capacity of the entire system and ensuring the stability and effect of sewage treatment. However, it should be noted that due to the differences in sewage everywhere, the activated sludge has selectivity and directionality when treating sewage, and the domestication of suitable activated sludge requires a long time. Therefore, it is particularly important to supplement activated sludge with similar flora, which helps to quickly restore the treatment capacity of the system and ensure the continuity and efficiency of sewage treatment. Therefore, how to domesticate activated sludge with similar flora to that in the sewage treatment system is a problem that needs to be solved by those skilled in the art. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: aiming at the deficiencies existing in the prior art, a sludge supplement device for wastewater treatment is provided. The device effectively domesticates activated sludge with similar flora to that in the sewage treatment system by using homologous wastewater, and the remaining activated sludge is also anaerobically digested to cultivate anaerobic sludge. It has strong applicability and can be well used for supplementing the sludge of complex sewage treatment systems. The wastewater and waste gas during the cultivation process are well treated, avoiding secondary pollution to the environment.

[0005] To solve the above technical problems, the technical solution of the utility model is:

[0006] A sludge supplement device for wastewater treatment, comprising a connected wastewater buffer tank and a sludge culture storage tank. The sludge culture storage tank includes a housing. The inner cavity of the sludge culture storage tank is divided into an aerobic zone and an anaerobic zone by a partition. The aerobic zone is provided with a porous water distribution plate on the side of the water inlet and is connected to the wastewater buffer tank. A plurality of aeration pipes are arranged at the bottom of the aerobic zone, and the aeration pipes are connected to a blower; an integrated sensor is arranged at the top of the aerobic zone. The bottom of the aerobic zone is connected to the bottom of the anaerobic zone through a sludge discharge valve, a first sludge discharge pump, and a sludge discharge pipeline; a three-phase separator is arranged at the top of the anaerobic zone, and the gas outlet of the three-phase separator is connected to a biogas water seal tank; the aerobic zone and the anaerobic zone are respectively connected to an activated sludge supplement pipeline and an anaerobic sludge supplement pipeline;

[0007] A controller is provided on the housing, a display screen is provided on the controller, and the blower, the integrated sensor, the sludge discharge valve, and the first sludge discharge pump are connected to the controller through signal lines.

[0008] Preferably, second sludge discharge pumps and third sludge discharge pumps are respectively arranged on the activated sludge supplement pipeline and the anaerobic sludge supplement pipeline, and the second sludge discharge pumps and the third sludge discharge pumps are respectively connected to the controller through signal lines.

[0009] Preferably, the integrated sensor includes a pH meter, a thermometer, and a dissolved oxygen meter.

[0010] Preferably, transparent observation windows are provided on the housing in both the aerobic zone and the anaerobic zone.

[0011] Preferably, a first drain port and a second drain port are respectively provided on the housing in the aerobic zone and the anaerobic zone. The first drain port is connected to a first drain pump and a wastewater treatment pipeline, and the second drain port is connected to a second drain pump and a sludge treatment pipeline; the first drain pump and the second drain pump are connected to the controller through signal lines.

[0012] Preferably, the gas outlet of the biogas water seal tank is respectively connected to a biogas incineration pipeline and an exhaust gas treatment pipeline.

[0013] Preferably, a stirring device is arranged in the anaerobic zone. The stirring device includes a stirring shaft rotatably arranged in the anaerobic zone and a plurality of stirring blades arranged on the stirring shaft. The stirring shaft is connected to a stirring handwheel arranged on one side of the housing.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the present utility model are:

[0015] 1. A sludge supplement device for wastewater treatment in the utility model includes a connected wastewater buffer tank and a sludge culture storage tank. The aerobic zone and the anaerobic zone in the sludge culture storage tank are connected through a sludge discharge pipeline. The remaining activated sludge in this device enters the anaerobic zone for anaerobic digestion, cultivating anaerobic sludge. On the one hand, it saves the resource material cost. On the other hand, this setting uses the same-source wastewater as the sewage treatment system to domesticate aerobic sludge, and can cultivate activated sludge with a bacterial community similar to that of the sewage treatment system. Moreover, it can cultivate aerobic sludge and anaerobic sludge simultaneously, with strong applicability, and can be well used to supplement the lack of sludge in complex sewage treatment systems.

[0016] 2. An integrated sensor is set at the top of the aerobic zone of this device. The integrated sensor includes a pH meter, a thermometer, and a dissolved oxygen meter, which can effectively control the domestication conditions of activated sludge, thereby improving the cultivation and domestication efficiency of activated sludge.

[0017] 3. A three-phase separator is set at the top of the anaerobic zone of this device. The gas outlet of the three-phase separator is connected to a biogas water seal tank, and the gas outlet of the biogas water seal tank is connected to a biogas incineration pipeline and an exhaust gas treatment pipeline. The exhaust gas generated during the anaerobic process is preliminarily treated by the biogas water seal tank. The gas that is not sealed by water is partly introduced into the biogas incineration system through the biogas incineration pipeline for treatment, and partly introduced into the exhaust gas treatment system through the exhaust gas treatment pipeline for treatment, avoiding secondary pollution to the atmosphere caused by the direct emission of exhaust gas.

[0018] 4. The aerobic zone and the anaerobic zone of this device are also respectively connected to a wastewater treatment pipeline and a sludge treatment pipeline. After the domestication of sludge is completed, the wastewater in the aerobic zone enters the sewage treatment system through the wastewater treatment pipeline for treatment, and the wastewater in the anaerobic zone enters the sludge treatment system for treatment, preventing its direct discharge from polluting the environment.

[0019] 5. The sludge culture storage tank of this device is provided with transparent observation windows at both the aerobic zone and the anaerobic zone, which are used to observe the sludge state and sludge concentration in the aerobic zone and the anaerobic zone, facilitating control. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model;

[0022] Figure 2 It is a schematic internal structural diagram of the sludge culture storage tank of Embodiment 1 of the present utility model;

[0023] In the figure, 1 is a wastewater buffer tank; 2 is a sludge culture storage tank; 3 is a housing; 4 is a partition; 5 is an aerobic zone; 6 is an anaerobic zone; 7 is a porous water distribution plate; 8 is an aeration pipe; 9 is a blower; 10 is an integrated sensor; 11 is a sludge discharge valve; 12 is a first sludge discharge pump; 13 is a sludge discharge pipeline; 14 is a three-phase separator; 15 is a biogas water seal tank; 16 is an activated sludge supplement pipeline; 17 is an anaerobic sludge supplement pipeline; 18 is a controller; 19 is a display screen; 20 is a second sludge discharge pump; 21 is a third sludge discharge pump; 22 is a transparent observation window; 23 is a first drain outlet; 24 is a second drain outlet; 25 is a first drain pump; 26 is a wastewater treatment pipeline; 27 is a second drain pump; 28 is a sludge treatment pipeline; 29 is a biogas incineration pipeline; 30 is an exhaust gas treatment pipeline; 31 is a stirring shaft; 32 is a stirring blade; 33 is a stirring handwheel. Specific embodiments

[0024] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment 1

[0026] As Figure 1 and Figure 2 shown, a sludge supplement device for wastewater treatment includes a connected wastewater buffer tank 1 and a sludge culture storage tank 2. The sludge culture storage tank 2 includes a housing 3. The inner cavity of the sludge culture storage tank 2 is divided into an aerobic zone 5 and an anaerobic zone 6 by a partition 4. The aerobic zone 5 is provided with a porous water distribution plate 7 on the side of the inlet water and is connected to the wastewater buffer tank 1. A plurality of aeration pipes 8 are provided at the bottom of the aerobic zone 5, and the aeration pipes 8 are connected to a blower 9; an integrated sensor 10 is provided at the top of the aerobic zone 5. The bottom of the aerobic zone 5 is connected to the bottom of the anaerobic zone 6 through a sludge discharge valve 11, a first sludge discharge pump 12, and a sludge discharge pipeline 13; a three-phase separator 14 is provided at the top of the anaerobic zone 6, and the gas outlet of the three-phase separator 14 is connected to a biogas water seal tank 15; the aerobic zone 5 and the anaerobic zone 6 are respectively connected to an activated sludge supplement pipeline 16 and an anaerobic sludge supplement pipeline 17;

[0027] A controller 18 is provided on the housing 3, a display screen 19 is provided on the controller 18, and the blower 9, the integrated sensor 10, the sludge discharge valve 11, and the first sludge discharge pump 12 are connected to the controller 18 through signal lines.

[0028] Through the above settings, the homologous wastewater of the sludge treatment system enters the wastewater buffer tank 1, and then enters the aerobic zone 5 of the sludge culture storage tank 2, where it is cultured and domesticated under certain conditions. The domesticated activated sludge is discharged into the sewage treatment system for supplementation. The sludge domesticated from the homologous wastewater is similar to the bacterial flora of the sludge treatment system, which can ensure the continuity and high efficiency of sewage treatment. The excess sludge enters the anaerobic zone 6 for anaerobic digestion, saving resource and material costs.

[0029] Preferably, a second sludge discharge pump 20 and a third sludge discharge pump 21 are respectively provided on the activated sludge supplement pipeline 16 and the anaerobic sludge supplement pipeline 17, and the second sludge discharge pump 20 and the third sludge discharge pump 21 are respectively connected to the controller 18 through signal lines.

[0030] Preferably, the integrated sensor 10 includes a pH meter, a thermometer, and a dissolved oxygen meter. The above settings can effectively control the domestication conditions of the sludge, thereby improving the sludge culture efficiency.

[0031] Preferably, the housing 3 is provided with transparent observation windows 22 at both the aerobic zone 5 and the anaerobic zone 6 for observing the sludge state and sludge concentration in the aerobic zone 5 and the anaerobic zone 6, which is convenient for control.

[0032] Preferably, the housing 3 is provided with a first drain outlet 23 and a second drain outlet 24 at the aerobic zone 5 and the anaerobic zone 6 respectively. The first drain outlet 23 is connected to the first drain pump 25 and the wastewater treatment pipeline 26, and the second drain outlet 24 is connected to the second drain pump 27 and the sludge treatment pipeline 28; the first drain pump 25 and the second drain pump 27 are connected to the controller 18 through signal lines. The wastewater in the aerobic zone 5 and the anaerobic zone 6 is respectively treated through the wastewater treatment system and the sludge treatment system to avoid secondary pollution to the environment.

[0033] Preferably, the gas outlet of the biogas water seal tank 15 is respectively connected to the biogas incineration pipeline 29 and the waste gas treatment pipeline 30. After the waste gas generated during the anaerobic process is subjected to water seal treatment, a part of the escaped gas enters the biogas incineration system, and a part enters the waste gas treatment system for treatment to avoid direct emission and pollution of the atmosphere.

[0034] Preferably, a stirring device is provided in the anaerobic zone 6. The stirring device includes a stirring shaft 31 rotatably arranged in the anaerobic zone 6 and a plurality of stirring blades 32 arranged on the stirring shaft 31. The stirring shaft 31 is connected to a stirring handwheel 33 arranged on one side of the housing 3.

[0035] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sludge supplement device for wastewater treatment, characterized in that: It includes a connected wastewater buffer tank and a sludge cultivation and storage tank. The sludge cultivation and storage tank includes a housing. The inner cavity of the sludge cultivation and storage tank is divided into an aerobic zone and an anaerobic zone by a partition. The aerobic zone is provided with a porous water distribution plate on the side of the water inlet and is connected to the wastewater buffer tank. A plurality of aeration pipes are provided at the bottom of the aerobic zone, and the aeration pipes are connected to a blower; An integrated sensor is provided at the top of the aerobic zone. The bottom of the aerobic zone and the bottom of the anaerobic zone are connected through a sludge discharge valve, a first sludge discharge pump, and a sludge discharge pipeline; A three-phase separator is provided at the top of the anaerobic zone, and the gas outlet of the three-phase separator is connected to a biogas water seal tank; The aerobic zone and the anaerobic zone are respectively connected to an activated sludge supply pipeline and an anaerobic sludge supply pipeline; A controller is provided on the housing, a display screen is provided on the controller, and the blower, the integrated sensor, the sludge discharge valve, and the first sludge discharge pump are connected to the controller through signal lines.

2. The sludge supplement device for wastewater treatment according to claim 1, characterized in that: Second sludge discharge pumps and third sludge discharge pumps are respectively provided on the activated sludge supply pipeline and the anaerobic sludge supply pipeline, and the second sludge discharge pumps and the third sludge discharge pumps are respectively connected to the controller through signal lines.

3. The sludge replenishing device for wastewater treatment according to claim 1, wherein: The integrated sensor includes a pH meter, a thermometer, and a dissolved oxygen meter.

4. A sludge supplement device for wastewater treatment according to claim 1, characterized in that: The housing is provided with transparent observation windows in both the aerobic zone and the anaerobic zone.

5. A sludge supplement device for wastewater treatment according to claim 1, characterized in that: The housing is respectively provided with a first drain port and a second drain port in the aerobic zone and the anaerobic zone. The first drain port is connected to a first drain pump and a wastewater treatment pipeline, and the second drain port is connected to a second drain pump and a sludge treatment pipeline; The first drain pump and the second drain pump are connected to the controller through signal lines.

6. The sludge supplement device for wastewater treatment according to claim 1, characterized in that: The gas outlet of the biogas water seal tank is respectively connected to a biogas incineration pipeline and an exhaust gas treatment pipeline.

7. A sludge supplement device for wastewater treatment according to claim 1, characterized in that: A stirring device is provided in the anaerobic zone. The stirring device includes a stirring shaft rotatably provided in the anaerobic zone and a plurality of stirring blades provided on the stirring shaft. The stirring shaft is connected to a stirring handwheel provided on one side of the housing.

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