CN215799034U

CN215799034U - Pollutant treatment system of sewage treatment plant

Info

Publication number: CN215799034U
Application number: CN202121438767.4U
Authority: CN
Inventors: 张铃; 郭嘉铭; 李芳�
Original assignee: Guangzhou Huiqing Environmental Protection Technology Co ltd
Current assignee: Guangzhou Huiqing Environmental Protection Technology Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-02-11
Anticipated expiration: 2031-06-25

Abstract

The utility model provides a pollutant treatment system of a sewage treatment plant, which comprises a primary treatment system, a secondary treatment system and an advanced treatment system, wherein the primary treatment system is used for isolating large suspended matters, the secondary treatment system is used for treating easily degradable substances in water, the primary treatment system is connected with the secondary treatment system through a pipeline, the secondary treatment system is connected with the advanced treatment system through an output pipeline, and the advanced treatment system comprises a membrane tank, an ozone tank and a disinfection tank.

Description

Pollutant treatment system of sewage treatment plant

Technical Field

The utility model relates to the field of pollutant environment-friendly treatment, in particular to a pollutant degradable treatment system of a sewage treatment plant.

Background

Domestic garbage and domestic sewage generated in daily life of people finally enter a sewage treatment plant for treatment, so the sewage treatment plant undertakes an important environment-friendly task, wherein the domestic pollutants are degradable to form active sludge, the active sludge method belongs to a biological method, the required retention time is long, the occupied area is large, the biological strains are greatly influenced by natural factors such as seasons, air temperature, illumination and the like, if the treatment effect is unstable, odor is easily emitted, mosquitoes and flies grow, the sanitary conditions are not good, the effluent standard of the current sewage treatment is gradually improved, the original technical means and the process are not suitable for the current effluent standard, aiming at the current effluent standard, the reflux rate of the sewage is low, other pollutants such as COD, BOD, bacteria and the like in low-sewage can not be effectively reduced, and if the retention time of the sewage is long, the occupied area is large, the current effluent standard can be generated, The disadvantages of high cost, low treatment efficiency and the like, and therefore, a pollutant treatment system which can optimize the existing process, improve the sewage reflux rate, adsorb bacteria in sewage, reduce the cost, save the occupied area and improve the operation efficiency is needed.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a pollutant treating system for a sewage treatment plant, which can effectively improve the sewage treatment effect.

In order to solve the technical problems, the utility model provides a treatment system for pollutants in a sewage treatment plant, which comprises a primary treatment system, a secondary treatment system and a deep treatment system, wherein the primary treatment system is used for isolating large suspended matters, the secondary treatment system is used for treating easily degradable substances in water, the primary treatment system is connected with the secondary treatment system through a pipeline, the secondary treatment system is connected with the deep treatment system through an output pipeline, the deep treatment system comprises a membrane pool, an ozone pool and a disinfection pool, a reactor is arranged in the membrane pool, and the reactor can be used for carrying out solid-liquid separation on the purified pollutants.

Preferably, the ozone tank is an ozone contact tank, the ozone tank is provided with an ozone adding device, the ozone adding device is used for adding an ozone source, the ozone adding device is connected with a gas dissolving system, and the gas dissolving system is used for increasing the ozone utilization rate.

Preferably, the advanced treatment system further comprises an adsorption tank, wherein the adsorption tank is internally provided with an active carbon adsorption component, a backwashing filter and a nanofiltration membrane, the backwashing filter can improve the adsorption efficiency of the active carbon adsorption component through timed backwashing, and the nanofiltration membrane can filter micro pollutants.

Preferably, the membrane tank is communicated with an adsorption tank through a circulating pipe of a back flush filter, the adsorption tank is communicated with an ozone tank through a guide pipe, and the ozone tank is connected with a disinfection tank through a disinfection circulating pipe.

Preferably, the primary treatment system includes pretreatment tank and preliminary sedimentation tank, be equipped with thick grid, thin grid in the pretreatment tank, be equipped with the centrifugal pump in the preliminary sedimentation tank, preliminary sedimentation tank is used for filtering the gravel in the sewage, sewage gets into centrifugal pump pond after the output of thin grid in proper order and filters.

Preferably, the secondary treatment system comprises an anaerobic tank, an anoxic tank, an aerobic tank and a membrane tank.

Preferably, the reactor in the membrane tank is a membrane bioreactor, and the membrane tank is connected behind the aerobic tank, so that the membrane bioreactor can improve the degradation efficiency of pollutants.

Preferably, be equipped with the ultraviolet ray disinfection lamp in the disinfection pond, the ultraviolet ray disinfection lamp is equipped with a plurality ofly, and a plurality of ultraviolet ray disinfection lamps interval sets up in the disinfection pond.

Preferably, the device also comprises a control unit, wherein the control unit comprises a primary control subunit, a secondary control subunit and a depth control subunit, and the depth control subunit comprises reactor control, ozone adding control, disinfection control and adsorption control.

The pollutant treatment system is provided with the primary treatment system, the secondary treatment system and the advanced treatment system, the advanced treatment system is provided with the membrane bioreactor, and aerobic microorganisms of the membrane bioreactor can degrade bacteria and other organic pollutants in sewage, so that the sewage treatment efficiency is improved, the sewage retention time is shortened, the occupied area is saved, and the operation efficiency is improved.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the utility model.

FIG. 1 is a schematic view of a preferred embodiment of a pollutant treating system of a sewage treatment plant according to the present invention;

fig. 2 is a schematic plan view of a pollutant treating system of a sewage treatment plant according to the present invention.

In the figure: 1. a membrane bioreactor; 2. ozone adding equipment; 3. a gas dissolving system; 4. an activated carbon adsorption component; 5. backwashing the filter; 6. a nanofiltration membrane; 7. coarse grating; 8. fine grids; 9. a centrifugal pump; 10. an ultraviolet disinfection lamp.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the illustrated embodiments are not intended to limit the present invention, and in the present embodiments, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the system or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention; in addition, in the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a welding fixing manner, a pin fixing manner, or the like, which is commonly used in the prior art, and therefore, detailed description thereof is omitted in this embodiment.

As shown in fig. 1-2, the present embodiment provides a pollutant treatment system of a sewage treatment plant, comprising a primary treatment system, a secondary treatment system and a deep treatment system, wherein the primary treatment system is used for isolating large suspended matters, the secondary treatment system is used for treating easily degradable substances in water, the primary treatment system is connected with the secondary treatment system through a pipeline, the secondary treatment system is connected with the deep treatment system through an output pipeline, the primary treatment system and the secondary treatment system are pre-treatment systems, the pollutant with larger volume is separated and filtered firstly, the deep treatment system comprises a membrane tank, an ozone tank and a disinfection tank, the membrane tank is provided with a reactor 1, the reactor 1 can separate solid from liquid of the purified pollutant, preferably, in this embodiment, the reactor 1 is an MBR membrane bioreactor 1, and aerobic microorganisms in the MBR membrane reactor degrade organic pollutants in the sewage.

As shown in fig. 1-2, as a further preferred embodiment, the ozone tank is an ozone contact tank, the ozone tank is provided with an ozone adding device 2, the ozone adding device 2 is used for adding an ozone source, the ozone adding device is connected with an air dissolving system 3, the air dissolving system 3 is used for increasing the utilization rate of ozone, the air dissolving system 3 is connected to a pipeline of the ozone adding device and is used for preparing sewage, the sewage enters the ozone tank, organic matters which are difficult to degrade can be degraded, various pollutants in the water can be further removed, the ozone adding pipeline is connected with the air dissolving system, the ozone source can be better mixed with the sewage through the air dissolving system, the utilization rate of ozone is increased, the cost of the ozone source is higher, and the operation cost can be saved by connecting the air dissolving system.

As shown in fig. 1-2, as a preferred embodiment, the advanced treatment system further includes an adsorption tank, an activated carbon adsorption component 4 and a nanofiltration membrane 6 are disposed in the adsorption tank, a backwash filter 5 is disposed on a connection pipeline between the membrane tank and the adsorption tank, and can adsorb and filter degraded organic matters and other pollutants through the adsorption function of activated carbon, and the backwash filter 5 can improve the adsorption efficiency of the activated carbon adsorption component through regular backwash, and the nanofiltration membrane 6 can filter micro pollutants.

As shown in fig. 1-2, as a further preferred embodiment, the membrane tank is communicated with the adsorption tank through a circulation pipe of the backwashing filter, the adsorption tank is communicated with the ozone tank through a guide pipe, the ozone tank is connected with the disinfection tank through a disinfection circulation pipe, the disinfection tank is used for eliminating various harmful bacteria in water, and after the sewage is disinfected, the sewage reaches the standard and is then discharged without toxicity.

As shown in fig. 1-2, as a preferred embodiment, the primary treatment system comprises a pretreatment tank and a primary sedimentation tank, wherein a coarse grid 7 and a fine grid 8 are arranged in the pretreatment tank, a centrifugal pump 9 is arranged in the primary sedimentation tank, the primary sedimentation tank is used for filtering sand in sewage, and the sewage is output from the fine grid 8 and then sequentially enters the centrifugal pump tank for filtering.

As shown in fig. 1-2, the secondary treatment system comprises an anaerobic tank, an anoxic tank and an aerobic tank, and the sewage water flowing out of the anaerobic tank, the anoxic tank and the aerobic tank can flow to the membrane tank of the advanced treatment system.

As shown in fig. 1-2, as a preferred embodiment, the reactor 1 in the membrane tank is an MBR membrane bioreactor 1, the membrane tank is connected behind the aerobic tank, the membrane bioreactor can improve the degradation efficiency of pollutants, the membrane bioreactor can degrade organic pollutants in sewage, the membrane bioreactor is an MBR membrane bioreactor, nitrifying bacteria in the reactor are used for converting ammonia nitrogen in sewage, so as to remove the generated peculiar smell in sewage, the MBR membrane bioreactor is placed in the membrane tank, the sludge concentration in the reflux mixed liquid can be increased through the interception function of the membrane tank, so that the sludge concentration in the anaerobic tank, the anoxic tank and the aerobic tank is improved, and the treatment effect of the biochemical system is improved.

As shown in fig. 1-2, as a preferred embodiment, a plurality of ultraviolet disinfection lamps 10 are disposed in the disinfection tank, the ultraviolet disinfection lamps are disposed at intervals in the disinfection tank, sewage treated by the adsorption tank flows to the ozone contact tank and then finally flows to the disinfection tank, and the sewage is disinfected by ultraviolet rays to eliminate various harmful bacteria in the water and then reaches the discharge standard, so that pollution-free discharge can be performed.

As shown in fig. 1-2, as a further preferred embodiment, the apparatus further comprises a control unit, the control unit comprises a control subunit, the control subunit comprises a primary control subunit, a secondary control subunit and a depth control subunit, the primary control subunit is used for controlling the pretreatment tank and the preliminary sedimentation tank, the secondary control subunit is used for controlling the anaerobic tank, the anoxic tank and the aerobic tank, the depth control subunit comprises a reactor control unit, an ozone adding control unit, a disinfection control unit and an adsorption control unit, the ozone adding control unit is used for controlling the operation of the ozone adding device, the disinfection control unit is used for controlling the operation of the disinfection lamp, the adsorption control unit is used for controlling the operation of the activated carbon adsorption component and the backwashing system, the reactor control unit is used for controlling the operation of the MBR reactor in the membrane biological reactor, and the circuit diagram of the control unit is the prior art, a detailed description will not be illustrated in the present specification.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A pollutant treatment system of sewage treatment plant which is characterized in that: including primary treatment system, secondary treatment system and advanced treatment system, primary treatment system is used for keeping apart the major possession suspended solid, secondary treatment system is used for handling the material of aquatic easy degradation, primary treatment system passes through the pipe connection with secondary treatment system, secondary treatment system passes through the delivery line with advanced treatment system and is connected, advanced treatment system includes membrane cisterna, ozone pond and disinfection pond, be equipped with the reactor in the membrane cisterna, the reactor can carry out solid-liquid separation with the pollutant that purifies.

2. The pollutant treating system of sewage treatment plant of claim 1, wherein the ozone tank is an ozone contact tank, the ozone tank is provided with an ozone adding device, the ozone adding device is used for adding an ozone source, the ozone adding device is connected with an air dissolving system, and the air dissolving system is used for increasing the ozone utilization rate.

3. The pollutant treating system of sewage treatment plant according to claim 1, wherein the advanced treatment system further comprises an adsorption tank, an activated carbon adsorption element and a nanofiltration membrane are arranged in the adsorption tank, a backwashing filter is arranged on a connecting pipeline between the membrane tank and the adsorption tank, the backwashing filter can improve the adsorption efficiency of the activated carbon adsorption element through timed backwashing, and the nanofiltration membrane can filter micro pollutants.

4. The pollutant treating system of sewage treatment plant of claim 3, wherein the membrane tank is in communication with an adsorption tank through a flow pipe of a backwash filter, the adsorption tank is in communication with an ozone tank through a flow guide pipe, and the ozone tank is connected with a disinfection tank through a disinfection flow pipe.

5. The pollutant treating system of sewage treatment plant according to claim 1, wherein the primary treatment system comprises a pretreatment tank and a primary sedimentation tank, wherein a coarse grid and a fine grid are arranged in the pretreatment tank, a centrifugal pump is arranged in the primary sedimentation tank, the primary sedimentation tank is used for filtering gravel in sewage, and the sewage is output from the fine grid and then sequentially enters the centrifugal pump tank for filtering.

6. The pollutant treatment system of a sewage treatment plant of claim 1, wherein the secondary treatment system comprises an anaerobic tank, an anoxic tank and an aerobic tank.

7. The pollutant treating system of sewage treatment plant according to claim 1, wherein the reactor in the membrane tank is a membrane bioreactor, and the membrane bioreactor can improve the pollutant degradation efficiency after the membrane tank is connected to the aerobic tank.

8. The pollutant treating system of sewage treatment plant according to claim 1, wherein a plurality of ultraviolet sterilizing lamps are provided in said sterilizing bath, and said plurality of ultraviolet sterilizing lamps are spaced apart in said sterilizing bath.

9. The pollutant treating system of sewage treatment plant of claim 1, further comprising a control unit comprising a primary control subunit, a secondary control subunit and a depth control subunit, the depth control subunit comprising reactor control, ozone dosing control, disinfection control and adsorption control.