CN216377831U

CN216377831U - Sewage treatment system

Info

Publication number: CN216377831U
Application number: CN202122733866.1U
Authority: CN
Inventors: 黄慧东
Original assignee: Nine Dragon Paper Industries Quanzhou Co ltd
Current assignee: Nine Dragon Paper Industries Quanzhou Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-26
Anticipated expiration: 2031-11-10

Abstract

The utility model relates to a sewage treatment system which comprises an adjusting water tank, a filtering device, a heat exchange device, a pre-acidification tank and a clean water storage tank, wherein the adjusting water tank is communicated with a water inlet of the heat exchange device through a sewage pipeline, a water outlet of the heat exchange device is communicated with the pre-acidification tank through a water outlet pipeline, the clean water tank is communicated with the water outlet pipeline through a cleaning pipeline, the filtering device is arranged on the sewage pipeline, a sewage pump is arranged on the sewage pipeline between the adjusting water tank and the filtering device, and a clean water pump is arranged on the cleaning pipeline. The sewage treatment system can uniformly heat sewage, and is low in cleaning cost.

Description

Sewage treatment system

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment system.

Background

At present, the anaerobic biological treatment technology in the sewage treatment process is widely applied to the water treatment industry, has good removal effect, high efficient reaction rate and strong adaptability to toxic substance quality, and is favored by people in the environmental protection industry. In order to meet the requirement of anaerobic digestion reaction in an anaerobic reactor, sewage needs to be heated when the temperature is lower, and the activity of anaerobic bacteria is ensured, the current sewage heating mode is steam heating, namely a main steam pipe can directly enter a sewage tank, a pipe body of the main steam pipe is provided with a plurality of small steam holes, steam is discharged from the small steam holes and is mixed with the sewage to heat the sewage, the heating mode can cause local overheating of the sewage, the local overheating of the sewage can easily cause the activity of strains for treating the sewage to be reduced, even the strains are directly killed, and finally the anaerobic treatment of the sewage can hardly achieve the ideal effect; the steam aperture is very easily taken place the mud jam, leads to sewage heating process can't go on, and steam aperture mud jam needs often to be cleared up, wastes time and energy, increases the cost of labor by a wide margin.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defects in the prior art, the utility model provides a sewage treatment device which can uniformly heat sewage and has low cleaning cost.

The technical solution adopted by the utility model is as follows: the sewage treatment system comprises an adjusting water tank, a filtering device, a heat exchange device, a pre-acidification tank and a clean water storage tank, wherein the adjusting water tank is communicated to a water inlet of the heat exchange device through a sewage pipeline, a water outlet of the heat exchange device is communicated to the pre-acidification tank through a water outlet pipeline, the clean water tank is communicated with the water outlet pipeline through a cleaning pipeline, the filtering device is installed on the sewage pipeline, a sewage pump is arranged on the sewage pipeline between the adjusting water tank and the filtering device, and a clean water pump is arranged on the cleaning pipeline.

Preferably, the heat exchange device is a plate heat exchange device, a medium inlet of the heat exchange device is communicated with the hot water storage tank through a hot water pipeline, a hot water pump is arranged on the hot water pipeline, a medium outlet of the heat exchange device is communicated with the hot water storage tank through a water return pipeline, and a first automatic control valve is arranged on the water return pipeline.

Preferably, a second flow detection device and a third temperature detection device are arranged on the hot water pipeline, and a water quality detection device and a fourth temperature detection device are arranged on the water return pipeline.

Preferably, the filtering device adopts a brush type filter, a sewage discharge outlet of the brush type filter is communicated to the pre-acidification tank through a slag discharge pipeline, and a second automatic control valve is arranged on the slag discharge pipeline.

Preferably, a first temperature detection device, a first flow detection device and a first pressure detection device are further arranged on the sewage pipeline between the adjusting water tank and the filtering device, and a second pressure detection device is arranged on the sewage pipeline between the filtering device and the heat exchange device.

Preferably, the outlet pipe is provided with a second temperature detection device and a third automatic control valve, and the cleaning pipe is communicated with the outlet pipe between the second temperature detection device and the third automatic control valve.

Preferably, a third pressure detection device is arranged on the cleaning pipeline.

The utility model has the beneficial effects that: according to the sewage treatment system, the sewage is heated by the heat exchange device, the sewage is heated to a proper temperature and then discharged into the pre-acidification tank for anaerobic biological treatment, so that the local overheating of the sewage is avoided, when the sewage is discharged into the pre-acidification tank, the filtering device can filter the sewage, the subsequent pipeline blockage is prevented, the heat exchange device and the filtering device can be cleaned by the clean water tank, the cleaning pipeline and the clean water pump, and the pipeline blockage probability is reduced.

Drawings

FIG. 1 is a schematic view showing the structure of a sewage treatment system according to the present invention.

Description of reference numerals: 1. adjusting the water tank; 2. a sewage pump; 3. a first temperature detection device; 4. a sewage conduit; 5. a first flow detection device; 6. a first pressure detection device; 7. a filtration device; 8. a second pressure detecting device; 9. a second self-controlled valve; 10. a slag discharge pipeline; 11. a pre-acidification tank; 12. a heat exchange device; 13. a water outlet pipeline; 14. a second temperature detection device; 15. a hot water storage tank; 16. a hot water pump; 17. a second flow detection device; 18. a third temperature detection device; 19. a hot water pipe; 20. a water return pipe; 21. a water quality detection device; 22. a fourth temperature detection device; 23. a first self-controlled valve; 24. a control system; 25. a clear water storage pool; 26. cleaning a pipeline; 27. a clean water pump; 28. a third pressure detecting device; 29. and a third automatic control valve.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which:

as shown in fig. 1, this embodiment provides a sewage treatment system, including regulation pond 1, filter equipment 7, heat transfer device 12, pre-acidification tank 11 and clear water reservoir 25, regulation pond 1 communicates to the water inlet of heat transfer device 12 through sewer line 4, and the delivery port of heat transfer device 12 communicates to pre-acidification tank 11 through outlet conduit 13, the clear water pond communicates with outlet conduit 13 through cleaning conduit 26, filter equipment 7 installs on sewer line 4, be equipped with sewage pump 2 on the sewer line 4 between regulation pond 1 and the filter equipment 7, be equipped with clear water pump 27 on the cleaning conduit 26, the sewage treatment system of this embodiment can carry out the even heating to sewage, guarantees the activity of anaerobism.

In this embodiment, the heat exchanging device 12 is a plate heat exchanging device, but is not limited to a plate heat exchanging device, and may also be a cast iron heat exchanging device, a cylinder heat exchanging device or a steel heat exchanging device, a medium inlet of the heat exchanging device 12 is communicated with the hot water storage tank 15 through a hot water pipeline 19, the hot water pipeline 19 is provided with a hot water pump 16, a medium outlet of the heat exchanging device 12 is communicated with the hot water storage tank 15 through a water return pipeline 20, the water return pipeline 20 is provided with a first automatic control valve 23, the heat exchanging device 12 heats the filtered sewage with heat of hot water in the hot water storage tank 15, and then discharges the sewage into the pre-acidification tank 11 and an anaerobic biological reaction therein, so that the heat of the sewage in the pre-acidification tank 11 can be ensured to be uniform. Preferably, the hot water pipe 19 is provided with a second flow rate detection device 17 and a third temperature detection device 18, and the return water pipe 20 is provided with a water quality detection device 21 and a fourth temperature detection device 22.

In this embodiment, the filtering device 7 may be a brush filter or a blue filter, the embodiment employs a brush filter, a sewage outlet of the brush filter is communicated to the pre-acidification tank 11 through a slag discharge pipeline 10, the slag discharge pipeline 10 is provided with a second automatic control valve 9, and the middle residue of the sewage does not participate in the heat exchange process, so that the pipeline can be prevented from being blocked.

In this embodiment, a first temperature detection device 3, a first flow detection device 5, and a first pressure detection device 6 are further disposed on the sewage conduit 4 between the regulation pool 1 and the filtering device 7, a second pressure detection device 8 is disposed on the sewage conduit 4 between the filtering device 7 and the heat exchange device 12, a second temperature detection device 14 and a third automatic control valve 29 are disposed on the water outlet conduit 13, the cleaning conduit 26 is communicated with the water outlet conduit 13 between the second temperature detection device 14 and the third automatic control valve 29, and a third pressure detection device 28 is disposed on the cleaning conduit 26.

In the embodiment, the first temperature detection device 3, the second temperature detection device 14, the third temperature detection device 18, the fourth temperature detection device 22, the first flow detection device 5, the second flow detection device 17, the first pressure detection device 6, the second pressure detection device 8, the third pressure detection device 28, the first automatic control valve 23, the second automatic control valve 9 and the third automatic control valve 29 are all connected into the control system 24, and the sewage heating control process is realized through programming of the control system 24, further, the control system 24 is one of a PLC system and a DCS system, and the siemens S7-300 PLC system is used in the scheme.

The sewage pump 2, the hot water pump 16 and the clean water pump 27 in this embodiment may adopt one of a centrifugal pump, a screw pump and a plunger pump, the centrifugal pump, the frequency conversion control and the flow regulation are adopted in this embodiment, the water outlet holes of the sewage pump 2, the hot water pump 16 and the clean water pump 27 are all provided with a check device, and the check device adopted in this embodiment adopts a check valve to avoid backflow; the first temperature detection device 3, the second temperature detection device 14, the third temperature detection device 18, and the fourth temperature detection device of the present example may employ one of a thermal resistor and a thermocouple, and the present example employs a platinum-type thermal resistor; the first flow rate detecting device 5 and the second flow rate detecting device 17 of the present embodiment may employ one of an electromagnetic flowmeter, an orifice plate flowmeter, a nozzle flowmeter, and a vortex shedding flowmeter, and the present embodiment employs an electromagnetic flowmeter; the first pressure detection device 6, the second pressure detection device 8, and the third pressure detection device 28 of the present embodiment are pressure transmitters; the first self-control valve 9, the second self-control valve 23, and the third self-control valve 29 of the present embodiment may be one of an electric valve and a pneumatic valve, and the present embodiment may be a pneumatic valve.

The sewage treatment system of this embodiment is at the during operation, and regulation pond 1 receives workshop discharge sewage, and sewage is heated in advancing heat transfer device 12 behind sewage pipe 4 filter equipment 7 by sewage pump 2, along outlet conduit 13 to pre-acidification pool 11, and heat transfer device 12 receives hot water from hot water storage tank 15, and hot water is sent to heat transfer device 12 by hot water pump 16 in, returns hot water storage tank 15 through return water pipe 20 after the heat transfer again, and the cleaning process is: clean water in the clean water storage tank 25 flows through a cleaning pipeline 26, is conveyed to the heat exchange device 12 by a clean water pump 27 along a water outlet pipeline 13, enters the filtering device 7 through the sewage pipeline 4 after cleaning, is discharged into the pre-acidification tank 11 through the slag discharge pipeline 10, the third automatic control valve 29 is closed during cleaning, the second automatic control valve 9 is opened, and the sewage pump 2 and the hot water pump 16 stop working.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. Sewage treatment system, its characterized in that: the adjusting water tank is communicated with a water inlet of the heat exchange device through a sewage pipeline, a water outlet of the heat exchange device is communicated with the pre-acidification tank through a water outlet pipeline, the clear water storage tank is communicated with the water outlet pipeline through a cleaning pipeline, the filtering device is installed on the sewage pipeline, a sewage pump is arranged on the sewage pipeline between the adjusting water tank and the filtering device, and a clear water pump is arranged on the cleaning pipeline.

2. The wastewater treatment system according to claim 1, wherein: the heat exchange device is a plate type heat exchange device, a medium inlet of the heat exchange device is communicated with the hot water storage tank through a hot water pipeline, a hot water pump is arranged on the hot water pipeline, a medium outlet of the heat exchange device is communicated with the hot water storage tank through a water return pipeline, and a first automatic control valve is arranged on the water return pipeline.

3. The wastewater treatment system according to claim 2, wherein: the hot water pipeline is provided with a second flow detection device and a third temperature detection device, and the water return pipeline is provided with a water quality detection device and a fourth temperature detection device.

4. The wastewater treatment system according to claim 1, wherein: the filtering device adopts a brush type filter, a sewage discharge outlet of the brush type filter is communicated to the pre-acidification tank through a slag discharge pipeline, and a second automatic control valve is arranged on the slag discharge pipeline.

5. The wastewater treatment system according to claim 1, wherein: a first temperature detection device, a first flow detection device and a first pressure detection device are further arranged on the sewage pipeline between the adjusting water tank and the filtering device, and a second pressure detection device is arranged on the sewage pipeline between the filtering device and the heat exchange device.

6. The wastewater treatment system according to claim 1, wherein: and the cleaning pipeline is communicated with the water outlet pipeline between the second temperature detection device and the third automatic control valve.

7. The wastewater treatment system according to claim 1, wherein: and a third pressure detection device is arranged on the cleaning pipeline.