CN210711209U

CN210711209U - Device for supplementing carbon source by utilizing sludge hydrolysis fermentation

Info

Publication number: CN210711209U
Application number: CN201921420854.XU
Authority: CN
Inventors: 李地超; 刘胜军; 黄志刚
Original assignee: Taian Qingyuan Water Co Ltd
Current assignee: Taian Qingyuan Water Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-06-09
Anticipated expiration: 2029-08-29

Abstract

The utility model relates to an utilize device of sludge hydrolytic fermentation supplemental carbon source belongs to sewage, sludge treatment equipment technical field, the device is including a jar body and mud scraping device, the middle part of the jar body is equipped with water-locator, mud-water separator, the water-locator is located mud-water separator's upside, the top of the jar body is equipped with out the mill weir, and the bottom is equipped with mud discharging device, mud scraping device includes mud scraper, transmission shaft and speed reduction driving motor. The device can be used for concentrating and dehydrating the sludge with high water content, and performing anaerobic hydrolysis fermentation on the dehydrated sludge to continuously supplement a carbon source for the biological tank.

Description

Device for supplementing carbon source by utilizing sludge hydrolysis fermentation

Technical Field

The utility model relates to a sewage, sludge treatment equipment technical field, concretely relates to utilize device of sludge hydrolytic fermentation supplemental carbon source.

Background

The biochemical organic matter content of the water inlet of the traditional sewage treatment plant is low, the carbon source needs to be additionally supplemented for maintaining the sludge activity of the biological pond, and the residual sludge generated by precipitation is transported outside through concentration, sludge discharge and the like. The prior art increases the investment cost of carbon sources and the sludge treatment cost; the residual sludge contains a large amount of organic matters, and resources are not developed and utilized.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model designs a device for continuously supplementing carbon source to a biological tank by utilizing sludge hydrolysis and fermentation, the device comprises a tank body and a mud scraping device, wherein the middle part of the tank body is provided with a water distributor and a mud-water separator, the water distributor is positioned at the upper side of the mud-water separator, the top side of the tank body is provided with a water outlet weir, a water outlet is connected with the outer side of the tank body, a sludge inlet is connected with the outer side of the tank body by the water distributor, a sludge discharge device is arranged at the bottom of the tank body, the mud scraping device comprises a mud scraping plate, a transmission shaft and a speed reduction driving motor, the mud scraping plate is positioned at the lower part of the tank body, the center of the transmission shaft is connected with the bottom end of the transmission shaft, the transmission shaft is arranged along the axis of the tank body and penetrates through the centers of the water distributor and the mud-water separator, the top end of the transmission shaft is connected with a speed reduction driving motor, and the speed reduction driving motor is erected above the tank body. The sludge with high water content enters the water distributor from the sludge inlet, and is uniformly and smoothly guided into the treatment device by the water distributor, the sewage overflows from the water outlet weir at the top of the tank body and is discharged through the water outlet, the sludge is precipitated to the lower part of the tank body through the mud-water separator, the sludge accumulated at the bottom is precipitated into high-concentration sludge and forms an anaerobic environment, microorganisms in the sludge are subjected to anaerobic hydrolytic fermentation step by step to form biochemical organic matters, generally, after 26-30 hours, the hydrolytic fermentation sludge can be continuously conveyed to the biological tank through the low-speed sludge scraping device and the sludge discharge device to be used as a supplementary carbon source, and after the sludge subjected to hydrolytic fermentation at the bottom is extracted, the sludge at the upper part is continuously precipitated and supplemented downwards to ensure that the supplementary carbon source is continuously formed.

Furthermore, a backwashing device is arranged on the lower side of the mud-water separator and comprises a parallel perforated pipe, a plurality of perforations are formed in the upper surface of the parallel perforated pipe, an upward nozzle is arranged at the position of the perforation, an air inlet connected with a high-pressure air source is connected to the outer side of the tank body of the parallel perforated pipe, and a control valve is arranged at the position of the air inlet. The mud-water separator can be blocked by sludge in the working process, and the backwashing device adopts a gas washing mode to clean the mud-water separator in time so as to ensure the normal work of the mud-water separator.

Furthermore, the water distributor comprises a net-shaped water distribution pipe, two sides of a pipe body of the net-shaped water distribution pipe are respectively provided with a water discharge nozzle, and the sludge inlet is connected with the net-shaped water distribution pipe and is provided with a one-way valve.

Further, mud-water separator includes polylith swash plate and rack, the rack comprises many crossbeams and indulges the strake, fixes the inboard at the jar body, the swash plate sets up side by side between the rack.

Furthermore, the bottom of the tank body is a conical bottom and is fixed on the ground through a bracket, a sludge collecting groove is formed in the bottom of the tank and is connected with a sludge pump on the outer side of the tank bottom through a pipeline, and a sludge discharge valve is arranged on the pipeline.

Now for the prior art, the utility model discloses an utilize sludge hydrolytic fermentation to supply device of carbon source's improvement characterized in that, at first use netted water distributor as the water-locator, make high moisture content mud evenly, gently get into processing apparatus, wherein mud deposits downwards slowly, and sewage is slowly to the overflow of top side play weir; moreover, a backwashing device is arranged at the lower side of the mud-water separator, the backwashing device is connected with a high-pressure air source, and the inclined plate is cleaned in a gas washing mode, so that the blockage of the inclined plate can be effectively prevented; and the separated sludge is precipitated at the bottom of the tank, the sludge at the bottom is subjected to hydrolytic fermentation in an anaerobic environment and is continuously converted into biochemical organic matters, and the biochemical organic matters are quantitatively conveyed to the biological tank through the sludge discharge device at the bottom to serve as a supplementary carbon source, so that the resource utilization of the sludge is realized, and the carbon source investment cost and the sludge treatment cost are reduced.

Drawings

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

FIG. 2 is a top view of the water distributor

FIG. 3 is a top view of the rack

FIG. 4 is a top view of the backwash device

FIG. 5 is a top view of the sludge discharge device

Description of the reference numerals

1 tank, 2 water distributors, 3 mud-water separators, 4 backwashing devices, 5 sludge scraping devices, 6 brackets, 7 sludge discharging devices, 8 water outlet weirs, 81 water outlets, 21 mesh water distributors, 22 water nozzles, 23 sludge inlets, 24 one-way valves, 31 inclined plates, 32 net racks, 321 transverse beams, 322 longitudinal supporting bars, 41 parallel perforated pipes, 42 nozzles, 43 air inlets, 44 control valves, 51 scrapers, 52 transmission shafts, 53 speed reduction driving motors, 71 sludge collecting tanks, 72 sludge pumps and 73 sludge valves

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in figure 1, the utility model discloses an embodiment of a device for utilize sludge hydrolysis fermentation to supply carbon source who designs, it includes jar body 1, jar body 1 is the cone bottom jar, fixes subaerial through bracket 6.

The top of the inner side of the tank body 1 is provided with a circle of water outlet weir 8, the water outlet weir 8 is connected with a water outlet 81 at the outer side of the tank body 1, the water outlet 81 is used for connecting a drainage pipeline, the middle part of the tank body 1 is sequentially provided with a water distributor 2, a mud-water separator 3 and a backwashing device 4 from top to bottom, and is provided with a mud scraping device 5, and the bottom of the tank body 1 is provided with a mud discharging device 7.

The mud scraping device 5 consists of a scraper 51, a transmission shaft 52 and a speed reduction driving motor 53, wherein the scraper 51 is arranged at the lower part of the tank body 1 close to the bottom of the tank, the middle part of the scraper 51 is connected with the bottom end of the transmission shaft 52, the transmission shaft 52 penetrates through the centers of the water distributor 2, the mud-water separator 3 and the backwashing device 4, the top end of the transmission shaft is connected with the speed reduction driving motor 53, and the speed reduction belt driving motor 53 is erected at the center of the upper side of the tank body 1. The scraper 51 is rotated by a reduction drive motor 53 via a drive shaft 52.

Referring to fig. 2, the water distributor 2 is composed of a mesh water distributor 21, two sides of the mesh water distributor 21 are respectively provided with a water outlet 22, the mesh water distributor 21 is connected with a sludge inlet 23 at the outer side of the tank 1 for connecting with a sludge inlet pipe, and is provided with a one-way valve 24.

The mud-water separator 3 is composed of a plurality of sloping plates 31 and a net frame 32, the net frame 32 is fixed on the inner wall of the tank body 1, the net frame 32 is composed of a plurality of transverse supporting beams 321 and a plurality of longitudinal supporting bars 322, the sloping plates 31 are arranged between the net frames 32 side by side, the inside of the tank body 1 is filled with one layer, and the tank body 1 is divided into an upper part and a lower part.

Referring to fig. 4, the backwashing device 4 is closely attached to the lower side of the net rack 32 and is composed of parallel perforated pipes 41, the upper surfaces of the parallel perforated pipes 41 are provided with a row of air outlets, the parallel perforated pipes 41 are connected with upward nozzles 42, the parallel perforated pipes 41 are connected with air inlets 43 at the outer side of the tank body 1 and are provided with control valves 44, the air inlets 43 are externally connected with high-pressure air sources, and the backwashing device 4 performs air washing on the inclined plate 31.

As shown in fig. 5, the sludge discharging device 7 comprises a sludge collecting tank 71 arranged at the bottom of the tank, the sludge collecting tank 71 is connected with a sludge discharging pump 72 through a pipeline, and a sludge discharging valve 73 is arranged on the pipeline.

The utility model discloses an utilize sludge hydrolysis fermentation to supply device of carbon source inside top-down can divide into in proper order out water zone, disengagement zone, settling zone, hydrolysis zone. The part above the water distributor 2 is a water outlet area, the position of the mud-water separator 3 is a separation area, the part below the backwashing device is a precipitation area, and the bottom of the tank body is a hydrolysis area. The method comprises the following specific steps:

1) the sludge with high water content uniformly and stably enters the device above the inclined plate through the water distributor;

2) the sludge-water separation function of the sludge with high water content through the lower sloping plate is as follows: the sludge is adsorbed and settled downwards, and the sewage uniformly overflows from the effluent weir after upwards entering the effluent area and is discharged through the water outlet, so that the concentration of the sludge settled below the sludge-water separator is improved;

3) meanwhile, the inclined plate can prevent the sludge disturbance, a relatively static state is formed below the inclined plate, the settled sludge is gradually accumulated in the settling zone, and the higher the sludge concentration is;

4) the high-concentration sludge accumulated at the bottom forms an anaerobic environment to form a hydrolysis area, microorganisms in the high-concentration sludge are gradually anaerobically hydrolyzed and fermented to form biochemical organic matters, and under the specific environment, through inspection, strong phosphorus and nitrogen removing flora can be cultured in the sludge, so that the special effect of efficiently removing TN and TP is realized;

5) after the sludge in the hydrolysis area is hydrolyzed and fermented for 26-30 hours, continuously conveying hydrolyzed and fermented sludge to a biological pond through a low-speed sludge scraping device and a sludge discharging device to serve as a supplementary carbon source;

6) after the sludge in the hydrolysis area is pumped away, the sludge in the sedimentation area is supplemented downwards, and anaerobic hydrolysis fermentation is continuously realized;

7) the swash plate adsorbs the condition that mud can lead to blockking up, regularly clears up it through backwash device, ensures the mud-water separation effect.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and the description of the invention.

Claims

1. The utility model provides an utilize sludge hydrolytic fermentation to supply device of carbon source, a serial communication port, the device is including a jar body and mud scraper, the middle part of the jar body is equipped with water-locator, mud-water separator, the water-locator is located mud-water separator's upside, the top side of the jar body is equipped with out the mill weir to the outlet has been met outside the jar body, the water-locator has met into mud mouth outside the jar body, the bottom of the jar body is equipped with mud discharging device, mud scraper includes mud scraper, transmission shaft and speed reduction driving motor, mud scraper is located the lower part of the jar body, and the bottom of transmission shaft is connected to its center department, the transmission shaft prolongs the axle center setting of the jar body to pass from water-locator and mud-water separator's center department, speed reduction driving motor is connected on its top, speed reduction driving motor erects the top of.

2. The device for supplementing the carbon source by utilizing sludge hydrolytic fermentation as claimed in claim 1, wherein a backwashing device is arranged at the lower side of the sludge-water separator, the backwashing device comprises a parallel perforated pipe, the upper surface of the parallel perforated pipe is provided with a plurality of perforations, an upward nozzle is arranged at the perforations, the parallel perforated pipe is connected with an air inlet at the outer side of the tank body and is connected with a high-pressure air source, and a control valve is arranged at the air inlet.

3. The device for supplementing the carbon source by utilizing the sludge hydrolysis fermentation as claimed in claim 1 or 2, wherein the water distributor comprises a mesh water distributor, two sides of a pipe body of the mesh water distributor are respectively provided with a water discharge nozzle, and the sludge inlet is connected with the mesh water distributor and is provided with a one-way valve.

4. The apparatus as claimed in claim 3, wherein the sludge-water separator comprises a plurality of inclined plates and a net frame, the net frame is composed of a plurality of transverse beams and longitudinal bars and fixed on the inner side of the tank, and the inclined plates are arranged between the net frame side by side.

5. The device for supplementing the carbon source by utilizing the sludge hydrolysis fermentation as claimed in claim 1, wherein the bottom of the tank body is a conical bottom and is fixed on the ground through a bracket, the tank bottom is provided with a sludge collecting groove, the sludge collecting groove is connected with a sludge pump outside the tank bottom through a pipeline, and a sludge discharge valve is arranged on the pipeline.