CN210736512U

CN210736512U - Sludge recovery system for sewage treatment

Info

Publication number: CN210736512U
Application number: CN201920930577.0U
Authority: CN
Inventors: 许家胜; 胡乾桂; 顾祝禹
Original assignee: Anhui Hekuang Environmental Engineering Co ltd
Current assignee: Anhui Hekuang Environmental Engineering Co ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-06-12
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a sludge recovery system for sewage treatment, which comprises a sludge sedimentation tank, a sludge scraping device, a high-speed separation bin and a scattering device, magnetic particle separation recovery unit, fold spiral shell sludge dewaterer, the physical reaction pond, sludge thickening tank and waste water collection device, the export of sludge settling tank links to each other with the feed inlet of high-speed separation storehouse, sludge settling tank's bottom and the bottom of physical reaction pond are linked together, the discharge gate and the magnetic particle separation recovery unit of high-speed separation storehouse link to each other, magnetic particle separation recovery unit and physical reaction pond are linked together, magnetic particle separation recovery unit's sludge outlet and sludge thickening tank are linked together, sludge thickening tank's export and fold spiral shell sludge dewaterer and link to each other, the outlet conduit of sludge settling tank's normal water exit draws forth a water outlet pipe and is connected to folding spiral shell sludge dewaterer and PAM charge device, waste water collection device links to each other with the physical. The utility model discloses can be fine to sludge dewatering and to self production waste water circulation processing.

Description

Sludge recovery system for sewage treatment

Technical Field

The utility model relates to a sewage treatment technical field, concretely relates to a sludge recovery system for sewage treatment.

Background

It is known that when sewage treatment is performed in a sewage treatment facility, a certain amount of sludge is generated, which contains a large amount of flocculant substances, a small amount of magnetic particles, and sludge containing pollutant components. If the sludge is not drained, the sludge is difficult to recover and treat, and secondary pollution is brought to the environment.

At present, the belt type filter press is mainly used for compressing the sludge moisture in the market, and the belt type filter press has the following defects: the dewatering effect of the filter press is not ideal, and the effect of drying into mud cakes cannot be achieved. The wastewater generated by dehydration and the flushing water generated by flushing the filter press contain a large amount of flocculant substances, magnetic powder and the like, and if the wastewater is directly discharged without being treated, secondary pollution is brought to the environment. It follows that the focus of the solution to sludge dewatering is on how to treat the resulting wastewater and sludge. Therefore, a new technical solution is needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sludge recycling system for sewage treatment, it solves prior art and has produced waste water and the difficult problem of handling of mud.

Based on the above-mentioned purpose, the technical scheme of the utility model is: a sludge recovery system for sewage treatment comprises a sludge settling tank, a sludge scraping device, a high-speed separation bin, a scattering device, a magnetic powder separation recovery device, a spiral sludge dewatering machine, a physical reaction tank, a sludge concentration tank, a PAM dosing device and a wastewater collection device, wherein the sludge scraping device is installed in the sludge settling tank, a water outlet is formed in the upper side wall of the sludge settling tank, a sludge outlet in the bottom of the sludge settling tank is connected with a feed inlet of the high-speed separation bin through a mixture lifting device, the bottom of the sludge settling tank is communicated with the bottom of the physical reaction tank, the scattering device is installed in the high-speed separation bin, a discharge outlet of the high-speed separation bin is connected with the magnetic powder separation recovery device, the magnetic powder separation recovery device is communicated with the physical reaction tank through a pipeline, and a sludge outlet of the magnetic powder separation recovery device is communicated with the sludge concentration tank through a pipeline, the export of sludge concentration pond with fold spiral shell sludge dewaterer and link to each other, a water outlet pipe is drawn forth to the well water exit department of sludge sedimentation pond and is connected to fold spiral shell sludge dewaterer and PAM charge device, fold spiral shell sludge dewaterer's waste water export with waste water collection device links to each other, waste water collection device pass through waste water hoisting device with the physical reaction pond links to each other.

Preferably, the scattering device comprises a connecting rotating shaft, a high-speed separation blade and a driving blade, wherein the high-speed separation blade and the driving blade are arranged at the bottom of the connecting rotating shaft, the driving motor is arranged at the top of the high-speed separation bin, and the driving blade are arranged at the bottom of the connecting rotating shaft.

Preferably, the driving motor is a variable frequency motor.

Preferably, the physical reaction tank comprises a mixing tank, a coagulation tank and a flocculation tank, the bottom of the mixing tank is communicated with the coagulation tank, the top of the coagulation tank is communicated with the flocculation tank, the bottom of the flocculation tank is communicated with the bottom of the sludge sedimentation tank, and the wastewater collection device is connected with the mixing tank through a wastewater lifting device.

Preferably, stirring devices are respectively arranged in the mixing tank, the coagulation tank, the flocculation tank and the PAM dosing device.

Preferably, the bottom of the mixing tank, the flocculation tank and the PAM dosing device is provided with a vent valve.

Compared with the prior art, the utility model has the advantages of as follows: the utility model provides a pair of a continuous circulation treatment sewage of sludge recycling system for sewage treatment makes the mud cake with the silt dehydration in the sewage, and sewage becomes the delivery port outflow of up to standard well final follow sludge settling pond upper end. Therefore, the utility model discloses treatment waste water and mud that can be fine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-sludge settling tank, 2-sludge scraping device, 3-high-speed separation bin, 4-scattering device, 5-magnetic powder separation and recovery device, 6-spiral sludge dewatering machine, 7-physical reaction tank, 8-sludge concentration tank, 9-PAM dosing device, 10-wastewater collection device, 11-water outlet, 12-mixture lifting device, 13-wastewater lifting device, 14-stirring device, 15-blow-down valve, 71-mixing tank, 72-coagulation tank, and 73-flocculation tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

As shown in fig. 1, fig. 1 is a schematic structural diagram of the present invention.

The utility model provides a sludge recycling system for sewage treatment, including sludge settling tank 1, scrape mud device 2, high-speed separation storehouse 3, break up device 4, magnetic particle separation recovery unit 5, fold spiral shell sludge dewaterer 6, physical reaction tank 7, sludge thickening tank 8, PAM charge device 9 and waste water collection device 10, be equipped with delivery port 11 on sludge settling tank 1's the last lateral wall, the hydrologic cycle is handled until sewage becomes up to standard reuse and flows from this delivery port 11. The sludge scraping device 2 is installed in the sludge settling tank 1, the bottom of the sludge settling tank 8 is communicated with the bottom of the physical reaction tank 7, the sludge scraping device 2 scrapes sludge to the sludge outlet at the bottom of the sludge settling tank 1, the sludge outlet at the bottom of the sludge settling tank 1 is connected with the feed inlet of the high-speed separation bin 3 through the mixture lifting device 12, and the mixture lifting device 12 lifts the sludge to the high-speed separation bin 3 for scattering treatment.

As shown in fig. 1, the scattering device 4 is installed in the high-speed separation bin 3, the scattering device 4 scatters the sludge for better subsequent separation of the sludge and the magnetic seeds, the scattering device 4 comprises a connecting rotating shaft, a high-speed separation blade installed at the bottom of the connecting rotating shaft, and a driving motor for driving the connecting rotating shaft to rotate, and the driving motor is installed at the top of the high-speed separation bin 3. The driving motor is a variable frequency motor. The variable frequency motor has the advantages of having a starting function; the resistance values of the stator and the rotor are reduced by adopting an electromagnetic design; the method is suitable for frequent speed change under different working conditions; energy is saved to a certain extent. The speed regulation scheme becomes the mainstream at present, and can be widely applied to stepless speed change transmission in various industries. The high speed separating blade 32 includes a body and rabble teeth disposed on a bottom wall of the body. The stirring teeth are in a sawtooth structure. The stirring teeth with the sawtooth structure can better break up magnetic flocculation mixed sludge, and further improve the separation effect of the sludge and magnetic seeds.

As shown in fig. 1, a discharge port of the high-speed separation bin 3 is connected with a magnetic powder separation and recovery device 5, the magnetic powder separation and recovery device 5 is communicated with a physical reaction tank 7 through a pipeline, a sludge outlet of the magnetic powder separation and recovery device 5 is communicated with a sludge concentration tank 8 through a pipeline, an outlet of the sludge concentration tank 8 is connected with a snail stacking sludge dewatering machine 6, an outlet pipe is led out from a reclaimed water outlet of the sludge sedimentation tank 1 and is connected with a snail stacking sludge dewatering machine 6 and a PAM dosing device 9, a wastewater outlet of the snail stacking sludge dewatering machine 6 is connected with a wastewater collection device 10, and the wastewater collection device 10 is connected with the physical reaction tank 7 through a wastewater lifting device 13. The spiral shell overlapping sludge dewatering machine 6 can directly dewater and dry sludge separated from magnetic seeds to form sludge cakes, the separated waste water contains a small amount of sludge, the sludge is lifted to the physical reaction tank 7 and then condensed with magnetic powder to form small particles, the small particles enter the sludge sedimentation tank 1, finally the small particles are conveyed to the high-speed separation bin 3 through the mixture lifting device 12 to be scattered, and then the sludge cakes and the qualified reclaimed water are separated and dewatered to finally form the sludge cakes and the qualified reclaimed water.

As shown in fig. 1, the physical reaction tank 7 comprises a mixing tank 71, a coagulation tank 72 and a flocculation tank 73, the bottom of the mixing tank 71 is communicated with the coagulation tank 72, the top of the coagulation tank 72 is communicated with the flocculation tank 73, the bottom of the flocculation tank 73 is communicated with the bottom of the sludge sedimentation tank 1, and the wastewater collection device 10 is connected with the mixing tank 71 through a wastewater lifting device 13. The mixing tank 71, the coagulation tank 72, the flocculation tank 73 and the PAM dosing device 9 are respectively provided with a stirring device 14. The stirring device 14 can promote the sewage, the magnetic powder and the liquid medicine to be fully mixed and quickly condensed to form small particles. The bottoms of the mixing tank 71, the flocculation tank 73 and the PAM dosing device 9 are provided with a blow-down valve 15. The air release valve 15 can discharge gas or liquid with pressure in non-working or emergency state, so as to avoid other accidents.

The utility model discloses when moving, produce sludge sedimentation in the sludge sedimentation tank 1, scrape mud device 2 this moment and begin work, scrape out sludge sedimentation to a mud outlet, mix mud this moment and carry to high-speed separation storehouse 3 through mixture hoisting device 12, will mix mud preliminary dispersion after beating loose device 4 and break up and be magnetism kind and mud mixture, flow in magnetic separation recovery unit 5, separate this moment and go into 7 recycle once more in the physics reaction tank. And in addition, the sludge separated by the magnetic powder separation and recovery device 5 is collected in a sludge concentration tank 8 and is transferred to a spiral sludge dewatering machine 6 through pressure. The spiral sludge dewatering machine 6 starts to work, the standard-reaching reclaimed water of the sludge sedimentation tank 1 and the PAM medicament in the PAM medicament adding device 9 are added into the sludge sedimentation tank, the generated wastewater is converged in the wastewater collecting device 10 and is conveyed to the physical reaction tank 7 through the wastewater lifting device 13 to perform a circulating action with the magnetic powder again; sludge cakes generated by the spiral sludge dewatering machine 6 are collected and bagged, and are transported to a designated place for further treatment.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a sludge recovery system for sewage treatment, its characterized in that, include sludge settling tank, scrape mud device, high-speed separation storehouse, break up device, magnetic separation recovery unit, fold spiral shell sludge dewaterer, physical reaction pond, sludge thickening tank, PAM charge device and waste water collection device, it installs to scrape mud device in sludge settling tank, be equipped with the delivery port on sludge settling tank's the last lateral wall, sludge settling tank's bottom mud outlet passes through the mixture hoisting device and links to each other with the feed inlet in high-speed separation storehouse, sludge settling tank's bottom with the bottom in physical reaction pond is linked together, break up the device and install in high-speed separation storehouse, the discharge gate in high-speed separation storehouse with magnetic separation recovery unit links to each other, magnetic separation recovery unit passes through the pipeline and is linked together with physical reaction pond, magnetic separation recovery unit's sludge outlet pass through the pipeline with sludge thickening tank is linked together, sludge thickening tank's export with it links to each other to fold spiral shell sludge dewaterer, sludge sedimentation tank's well water outlet department draws a water outlet pipe and is connected to folding spiral shell sludge dewaterer and PAM charge device, fold spiral shell sludge dewaterer's waste water outlet with waste water collection device links to each other, waste water collection device pass through waste water hoisting device with the physical reaction pond links to each other.

2. The sludge recycling system for sewage treatment as claimed in claim 1, wherein the breaking device comprises a connecting shaft, a high-speed separation blade mounted at the bottom of the connecting shaft, and a driving motor for driving the connecting shaft to rotate, wherein the driving motor is mounted at the top of the high-speed separation bin.

3. The sludge recovery system for wastewater treatment as claimed in claim 2, wherein said driving motor is a variable frequency motor.

4. The sludge recovery system for sewage treatment as claimed in claim 1, wherein the physical reaction tank comprises a mixing tank, a coagulation tank and a flocculation tank, the bottom of the mixing tank is communicated with the coagulation tank, the top of the coagulation tank is communicated with the flocculation tank, the bottom of the flocculation tank is communicated with the bottom of the sludge sedimentation tank, and the wastewater collection device is connected with the mixing tank through a wastewater lifting device.

5. The sludge recycling system for sewage treatment as claimed in claim 4, wherein stirring devices are respectively arranged in the mixing tank, the coagulation tank, the flocculation tank and the PAM dosing device.

6. The sludge recovery system for sewage treatment as claimed in claim 4 or 5, wherein the bottom of the mixing tank, the flocculation tank and the PAM dosing device is provided with a vent valve.