Movable domestic sewage treatment device

Abstract

The movable domestic sewage treatment device comprises a self-cleaning filter, a self-sucking pump, a bag type filter, an ultraviolet sterilizer, a collecting barrel, a first liquid conveying pump, a micro-filtration membrane assembly, a first temporary storage barrel, a high-pressure liquid conveying pump and a reverse osmosis membrane assembly which are sequentially connected in series, a residue liquid outlet of the microfiltration membrane assembly is connected with the bag filter; a concentrated solution outlet of the reverse osmosis membrane assembly is sequentially connected in series with a second liquid delivery pump, a pipeline heater, a liquid preparation tank and a third liquid delivery pump; the additive barrel is provided with a first metering pump, the bacteria liquid barrel is provided with a second metering pump, and the first metering pump and the second metering pump are connected with a liquid preparation tank; a produced water outlet of the reverse osmosis membrane assembly is connected in series with a second temporary storage barrel and a fourth liquid conveying pump; the fourth liquid conveying pump is connected with a backwashing water interface of the reverse osmosis membrane assembly and a backwashing water interface of the micro-filtration membrane assembly; component parts of the device are fixedly arranged in the same frame. The decentralized domestic sewage treatment device is particularly suitable for decentralized domestic sewage treatment, and is high in treatment efficiency and good in effect.

Description

Technical Field

[0001] The utility model relates to domestic sewage treatment equipment, in particular to a movable domestic sewage treatment device. Background Art

[0002] With the improvement of environmental protection awareness and the strengthening of relevant policies and regulations, higher requirements have been put forward for domestic sewage treatment. At present, domestic sewage in cities and towns in my country has been collected and treated in sewage treatment plants through domestic sewage collection pipe networks, and its sewage treatment equipment has been basically perfected. However, for some relatively scattered domestic sewage, such as some villages in rural areas where domestic sewage is scattered due to geographical distribution characteristics, some separate production and business sites are difficult to collect and treat through the establishment of domestic sewage collection pipe networks. For example, field construction units and mobile production and construction units are not suitable for the traditional sewage treatment method of sewage treatment plants due to the characteristics of their domestic sewage being scattered, low in treatment volume and mobility. Therefore, as an effective supplement to the sewage treatment of traditional sewage treatment plants, the development of economical and environmentally friendly domestic sewage treatment equipment that can realize on-site and nearby treatment of domestic sewage, can be reused, is easy to move, and can achieve the purpose of recycling and reusing water resources has become an urgent problem to be solved in the current decentralized domestic sewage treatment. The prior art discloses a movable domestic sewage treatment device, which uses a sewage treatment system integrated inside a vehicle-mounted container, and can realize the flexible movement of the sewage treatment device. However, its sewage treatment system uses traditional sedimentation and grid filtration methods, and the treatment efficiency of the equipment is low and the effect is poor. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned problems and to provide a movable domestic sewage treatment device which is particularly suitable for the treatment of decentralized domestic sewage and has high treatment efficiency and good effect.

[0004] The technical solution for achieving the purpose of the utility model is: a movable domestic sewage treatment device, comprising a self-cleaning filter, a self-priming pump, a bag filter, an ultraviolet disinfector, a collecting bucket, a first liquid delivery pump, a microfiltration membrane assembly, a first temporary storage bucket, a high-pressure liquid delivery pump and a reverse osmosis membrane assembly, which are sequentially connected in series via a pipeline; the slag liquid outlet of the microfiltration membrane assembly is connected to the liquid inlet of the bag filter via a pipeline; the concentrated liquid outlet of the reverse osmosis membrane assembly is connected to the liquid inlet of the second liquid delivery pump via a pipeline, the liquid outlet of the second liquid delivery pump is connected to the liquid inlet of the pipeline heater via a pipeline, and the liquid outlet of the pipeline heater is connected to the liquid inlet of the pipeline heater. The outlet of the domestic sewage treatment device is connected to the liquid preparation tank through a pipeline, the additive barrel is equipped with a first metering pump, the bacterial liquid barrel is equipped with a second metering pump, the liquid outlets of the first metering pump and the second metering pump are connected to the liquid preparation tank through a pipeline, and the liquid preparation tank is connected to a third liquid delivery pump through a pipeline; the second temporary storage barrel is connected to the water production outlet of the reverse osmosis membrane assembly through a pipeline, the liquid outlet of the second temporary storage barrel is connected to the fourth liquid delivery pump, and the liquid outlet of the fourth liquid delivery pump is connected to the backwash water interface of the reverse osmosis membrane assembly and the backwash water interface of the microfiltration membrane assembly through a pipeline; the components of the domestic sewage treatment device are fixedly arranged in the same frame.

[0005] In the above-mentioned movable domestic sewage treatment device, two bag filters are arranged in parallel.

[0006] The above-mentioned movable domestic sewage treatment device, the microfiltration membrane assembly is composed of a plurality of single-mounted external columnar microfiltration membranes connected in parallel.

[0007] The above-mentioned movable domestic sewage treatment device, the reverse osmosis membrane assembly is composed of a plurality of single-mounted external columnar reverse osmosis membranes connected in parallel.

[0008] In the above-mentioned movable domestic sewage treatment device, a plurality of liquid distribution tanks are arranged in parallel.

[0009] The beneficial effects of the utility model are as follows: 1) It adopts a highly integrated design, which is particularly suitable for the treatment of decentralized domestic sewage, and can achieve on-site and nearby treatment of domestic sewage, and achieve the purpose of recycling and reusing water resources; 2) It can be flexibly transferred by being mounted on a vehicle, and can be reused and easily moved; 3) The treatment efficiency is high and the effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of the movable domestic sewage treatment device;

[0011] Figure 2 It is a structural block diagram of the movable domestic sewage treatment device.

[0012] In the figure: 1. Self-cleaning filter; 2. Self-priming pump; 3. Bag filter; 4. Ultraviolet sterilizer; 5. Collection barrel; 6. First liquid delivery pump; 7. Microfiltration membrane assembly; 8. First temporary storage barrel; 9. High-pressure liquid delivery pump; 10. Reverse osmosis membrane assembly; 11. Second liquid delivery pump; 12. Pipeline heater; 13. Liquid preparation tank; 14. Additive barrel; 15. First metering pump; 16. Bacteria liquid barrel; 17. Second metering pump; 18. Third liquid delivery pump; 19. Second temporary storage barrel; 20. Fourth liquid delivery pump; 21. Frame. DETAILED DESCRIPTION

[0013] The specific implementation of the utility model is described below in conjunction with the accompanying drawings.

[0014] like Figure 1 , Figure 2The movable domestic sewage treatment device comprises a self-cleaning filter 1, the liquid inlet of the self-cleaning filter 1 is connected to the sewage pumping pipe, the liquid outlet of the self-cleaning filter 1 is connected to the liquid inlet of the self-priming pump 2 through a pipeline, the liquid outlet of the self-priming pump 2 is connected to the liquid inlet of the bag filter 3 through a pipeline, the liquid outlet of the bag filter 3 is connected to the liquid inlet of the ultraviolet sterilizer 4 through a pipeline, the liquid outlet of the ultraviolet sterilizer 4 is connected to the liquid inlet of the collecting bucket 5 through a pipeline, the liquid outlet of the collecting bucket 5 is connected to the liquid inlet of the first liquid delivery pump 6 through a pipeline, the liquid outlet of the first liquid delivery pump 6 is connected to the liquid inlet of the microfiltration membrane assembly 7 through a pipeline, the filtrate outlet of the microfiltration membrane assembly 7 is connected to the liquid inlet of the first temporary storage bucket 8 through a pipeline, the liquid outlet of the first temporary storage bucket 8 is connected to the liquid inlet of the high-pressure liquid delivery pump 9 through a pipeline, and the liquid outlet of the high-pressure liquid delivery pump 9 is connected to the liquid inlet of the reverse osmosis membrane assembly 10 through a pipeline. The self-cleaning filter 1 adopts an electric brush self-cleaning filter. According to the specific conditions of the domestic sewage to be treated, the filtration accuracy of the self-cleaning filter 1 is selected to be 40 mesh to 200 mesh. The bag filter 3 adopts a quick-opening single bag filter with a filtration accuracy of 3000 mesh. Two bag filters 3 are set in parallel and work alternately. The ultraviolet disinfector 4 is a pipeline ultraviolet disinfector. The microfiltration membrane assembly 7 is composed of a plurality of single-mounted external cylindrical microfiltration membranes of the same specification connected in parallel, and the pore size of the microfiltration membrane is 0.2um-0.4um. The high-pressure liquid delivery pump 9 adopts a multi-stage centrifugal pump. The reverse osmosis membrane assembly 10 is composed of a plurality of single-mounted external cylindrical reverse osmosis membranes connected in parallel. When the movable domestic sewage treatment device is working, the self-priming pump 2 is started, and the domestic sewage in the sedimentation tank is filtered and treated by the self-cleaning filter 1 and the bag filter 3 to remove large particles in the domestic sewage, and the domestic sewage is disinfected by the ultraviolet disinfector 4, and the pretreatment of the domestic sewage is completed and enters the collection bucket 5. The first liquid delivery pump 6 delivers the pre-treated domestic sewage in the collection barrel 5 to the microfiltration membrane assembly 7 for microfiltration treatment, and the filtrate treated by the microfiltration membrane assembly 7 enters the first temporary storage barrel 8. The high-pressure liquid delivery pump 9 delivers the filtrate treated by the microfiltration in the first temporary storage barrel 8 to the reverse osmosis membrane assembly 10 for reverse osmosis membrane treatment to obtain qualified produced water that can be discharged or used as recycled water.

[0015] The slag liquid outlet of the microfiltration membrane assembly 7 is connected to the liquid inlet of the bag filter 3 through a pipeline to realize the circulation treatment of the slag liquid produced by the microfiltration treatment of the microfiltration membrane assembly 7, which is used to improve the water production rate of sewage treatment. The slag liquid that meets the standards after being treated by the microfiltration membrane assembly 7 is discharged through the slag liquid discharge pipeline.

[0016] The concentrated liquid outlet of the reverse osmosis membrane assembly 10 is connected to the liquid inlet of the second liquid delivery pump 11 through a pipeline, and the liquid outlet of the second liquid delivery pump 11 is connected to the liquid inlet of the pipeline heater 12 through a pipeline, and the liquid outlet of the pipeline heater 12 is connected to the liquid inlet of the liquid preparation tank 13 through a pipeline, the first metering pump 15 is installed on the additive barrel 14, and the second metering pump 17 is installed on the bacterial liquid barrel 16. The liquid outlets of the first metering pump 15 and the second metering pump 17 are connected to the agent addition port of the liquid preparation tank 13 through a pipeline, and the liquid outlet of the liquid preparation tank 13 is connected to the liquid inlet of the third liquid delivery pump 18 through a pipeline. The pipeline heater 12 adopts a pipeline heater with a U-shaped heating tube in the cavity, and the heating output temperature is 35°C. The liquid preparation tank 13 is a heat-insulating and stirring liquid preparation tank, and is respectively equipped with a radar level gauge, a temperature sensor and a pH sensor, which can realize real-time monitoring of the liquid level, temperature and pH value of the mixed liquid in the liquid preparation tank 13. A plurality of liquid preparation tanks 13 are arranged in parallel according to the sewage treatment capacity, Figure 1 Two liquid preparation tanks 13 of the embodiment are arranged in parallel. The concentrated liquid produced after high-pressure reverse osmosis treatment by the reverse osmosis membrane assembly 10 is transported into the pipeline heater 12 by the second liquid delivery pump 11. The concentrated liquid passing through the pipeline heater 12 is heated to 35°C and sent into the liquid preparation tank 13. The additives and anaerobic bacteria in the additive barrel 14 and the bacterial liquid barrel 16 are sent into the liquid preparation tank 13 according to the dosage set by the established liquid preparation formula by the first metering pump 15 and the second metering pump 17 to efficiently complete the anaerobic biochemical reaction of the concentrated liquid, so as to achieve the purpose of further deep decomposition and removal of harmful organic matter contained in the concentrated liquid. The external drainage after the anaerobic biochemical reaction meets the discharge standard and is discharged through the third liquid delivery pump 18.

[0017] The liquid inlet of the second temporary storage barrel 19 is connected to the water outlet of the reverse osmosis membrane assembly 10 through a pipeline, and the liquid outlet of the second temporary storage barrel 19 is connected to the liquid inlet of the fourth liquid delivery pump 20 through a pipeline, and the liquid outlet of the fourth liquid delivery pump 20 is connected to the backwashing water interface of the reverse osmosis membrane assembly 10 and the backwashing water interface of the microfiltration membrane assembly 7 through a pipeline, so as to realize the backwashing of the reverse osmosis membrane assembly 10 and the microfiltration membrane assembly 7. Pressure sensors are respectively installed on the liquid inlet and outlet pipelines of the microfiltration membrane assembly 7 and the reverse osmosis membrane assembly 10, and the backwashing monitoring of the microfiltration membrane assembly 7 and the reverse osmosis membrane assembly 10 is realized by monitoring the pressure difference. The utility model can be equipped with a backwashing agent delivery pump on the backwashing water pipeline and a backwashing medicine box to realize the backwashing of the reverse osmosis membrane assembly 10 and the microfiltration membrane assembly 7.

[0018] The first liquid delivery pump 6, the second liquid delivery pump 11, the third liquid delivery pump 18 and the fourth liquid delivery pump 20 of the utility model are vertical pipeline centrifugal pumps.

[0019] The components of the above-mentioned mobile domestic sewage treatment device are fixedly arranged in a rectangular frame 21, and the frame 21 is formed by welding of steel sections.

[0020] The movable domestic sewage treatment device is equipped with corresponding electric control valves and manual valves on the corresponding liquid delivery pipeline, which will not be described in detail here.

Claims

1. A mobile domestic sewage treatment device, characterized in that: The invention comprises a self-cleaning filter (1), a self-priming pump (2), a bag filter (3), an ultraviolet disinfector (4), a collecting barrel (5), a first liquid delivery pump (6), a microfiltration membrane assembly (7), a first temporary storage barrel (8), a high-pressure liquid delivery pump (9) and a reverse osmosis membrane assembly (10) which are sequentially connected in series via a pipeline; the slag liquid outlet of the microfiltration membrane assembly (7) is connected to the liquid inlet of the bag filter (3) via a pipeline; the concentrated liquid outlet of the reverse osmosis membrane assembly (10) is connected to the liquid inlet of a second liquid delivery pump (11) via a pipeline; the liquid outlet of the second liquid delivery pump (11) is connected to the liquid inlet of a pipeline heater (12) via a pipeline; the liquid outlet of the pipeline heater (12) is connected to a liquid preparation tank (13) and an additive barrel (14) via a pipeline. The device is equipped with a first metering pump (15), and the bacterial liquid tank (16) is equipped with a second metering pump (17). The liquid outlets of the first metering pump (15) and the second metering pump (17) are connected to the liquid preparation tank (13) via a pipeline, and the liquid preparation tank (13) is connected to a third liquid delivery pump (18) via a pipeline. The second temporary storage tank (19) is connected to the water output outlet of the reverse osmosis membrane assembly (10) via a pipeline, and the liquid outlet of the second temporary storage tank (19) is connected to a fourth liquid delivery pump (20). The liquid outlet of the fourth liquid delivery pump (20) is connected to the backwash water interface of the reverse osmosis membrane assembly (10) and the backwash water interface of the microfiltration membrane assembly (7) via a pipeline. The components of the domestic sewage treatment device are fixedly arranged in the same frame (21).

2. The mobile domestic sewage treatment device according to claim 1 is characterized in that: Two bag filters (3) are arranged in parallel.

3. The mobile domestic sewage treatment device according to claim 1 is characterized in that: The microfiltration membrane assembly (7) is composed of a plurality of single-mounted external columnar microfiltration membranes connected in parallel.

4. The mobile domestic sewage treatment device according to claim 1 is characterized in that: The reverse osmosis membrane assembly (10) is composed of a plurality of single-mounted external columnar reverse osmosis membranes connected in parallel.

5. The mobile domestic sewage treatment device according to claim 1 is characterized in that: A plurality of the liquid distribution tanks (13) are arranged in parallel.

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