CN106430809B - Sewage sludge treatment system and environment-friendly recycling method thereof - Google Patents
Sewage sludge treatment system and environment-friendly recycling method thereof Download PDFInfo
- Publication number
- CN106430809B CN106430809B CN201610641940.8A CN201610641940A CN106430809B CN 106430809 B CN106430809 B CN 106430809B CN 201610641940 A CN201610641940 A CN 201610641940A CN 106430809 B CN106430809 B CN 106430809B
- Authority
- CN
- China
- Prior art keywords
- sludge
- sludge treatment
- liquid level
- water
- sewage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
A sewage sludge treatment system and an environment-friendly recycling method thereof comprise a collecting tank (1), and are characterized in that: the bottom of the collecting tank (1) is connected with a sludge treatment device (2), the bottom of the sludge treatment device (2) is provided with a discharge port, a control valve (7) is installed on the discharge port, a sludge settling cylinder (5) is installed right below the discharge port, more than one anaerobic reaction device (6) is arranged on the outer side of the sludge settling cylinder (5), an outlet of a reaction sludge dewatering device (12) is connected with a colter mixer (14) through a screw conveyor (13), a bottom outlet of the colter mixer (14) is connected with a filter pressing device (16), and the filter pressing device (16) is connected with a water reducing ball forming machine (19).
Description
Technical Field
The invention relates to a sewage sludge treatment system and a recycling method thereof, in particular to a sewage sludge treatment system and an environment-friendly recycling method thereof, and belongs to the technical field of sewage treatment.
Background
With the acceleration of industrialization and urbanization, people can generate a large amount of sewage sludge in production and life, and the sewage sludge directly discharged into rivers, lakes and seas can cause great pollution. The development of sewage sludge treatment technology is still difficult, how to carry out environment-friendly treatment on sewage sludge is still a technical difficulty, and especially, the method is very important for ensuring the quality of treated effluent water, recycling energy in the sewage sludge and forming valuable end products. Most of the traditional sewage and sludge treatment adopts a single biological fermentation, drying or membrane separation technology, the treatment efficiency of the sewage and sludge is very low, the treatment period is longer, the economic benefit is not high, and the large-scale popularization and application are difficult. Biogas slurry and biogas residues are difficult to effectively separate and reuse after the traditional biological fermentation process adopted by the existing sewage sludge treatment, the cost-reduction effective separation of sewage and sludge is still a technical difficulty, and the existing sewage sludge treatment is often difficult to reach the discharge standard and still causes pollution to a certain degree.
Disclosure of Invention
The invention aims to overcome the defects and defects that the existing sewage sludge treatment equipment has low treatment efficiency and high treatment cost, sewage and sludge are difficult to separate with low energy consumption, the energy recovery utilization rate of the sewage and sludge is not high, the quality of treated effluent water is difficult to reach the discharge standard, and the energy-saving and environment-friendly effects are poor.
In order to achieve the purpose, the technical solution of the invention is as follows: a sewage sludge treatment system and an environment-friendly recycling method thereof comprise a collecting tank, and are characterized in that: the bottom of the collecting tank is connected with a sludge treatment device, the upper end of the sludge treatment device is provided with a movable cover, the bottom of the sludge treatment device is connected with an external air blower through a pipeline, the bottom of the sludge treatment device is provided with a discharge port on which a control valve is arranged, a sludge settling cylinder is arranged right below the discharge port, the outer side of the sludge settling cylinder is provided with more than one anaerobic reaction device, electromagnetic valves are arranged between the sludge settling cylinder and each anaerobic reaction device, the upper end of the anaerobic reaction device is provided with a conical top cover, the top of the conical top cover is provided with a biogas discharge pipe, a negative pressure pump is arranged on the biogas discharge pipe and connected with a gas collecting device, the bottom of the anaerobic reaction device is respectively provided with a guide cylinder, the bottom of the guide cylinder is connected with a reaction sludge dewatering device through a pipeline, and the outlet of the reaction sludge dewatering device is, the bottom outlet of the colter mixer is connected with a filter pressing device, the filter pressing device is connected with a water reducing pelletizer, the outlet end of the water reducing pelletizer is connected with the inlet end of a hot air dryer, and the outer outlet of the hot air dryer is a lignite outlet.
The sludge treatment device comprises a cylinder wall, a rotating shaft, a rotary table, stirring rods, an arc-shaped plate, a driving motor and air injection holes, wherein the rotating shaft is installed at the top of the cylinder wall through a bearing seat, the driving motor is coaxially installed at the upper end of the rotating shaft, the rotary table is coaxially fixed on the rotating shaft, and a plurality of stirring rods are symmetrically arranged on the outer circumference of the rotating shaft along the radial direction.
The tail end of the stirring rod is fixed with an arc-shaped plate, a plurality of air injection holes are evenly formed in the inner side face of the arc-shaped plate and face the direction of the rotating shaft, and the air injection holes are connected with the air blower through a pipeline.
The sludge settling cylinder is characterized in that floating impurity discharge ports are formed in two opposite sides of the side wall of the sludge settling cylinder and are positioned on the liquid level, a sliding groove is formed in the inner side wall of the sludge settling cylinder, a liquid level buoyancy lifting device is installed in the sliding groove, a hydraulic pump is installed on the liquid level buoyancy lifting device, a push rod is installed at the movable end of the hydraulic pump, an upper-layer filtering grid is hinged to the outer end of the push rod, the 1/5-1/4 part at the bottom of the upper-layer filtering grid is immersed below the liquid level, and the upper-layer filtering grid is arranged.
One side of the upper filtering grid close to the center of the sludge settling cylinder is provided with a liquid level nozzle, the liquid level nozzle faces to the floating impurity discharge port on the other side, and the liquid level nozzle is connected with an air compressor through an air conveying pipe.
An additive mixer is installed at the upper end of the outer side of the coulter mixer, and an outlet at the bottom of the additive mixer is communicated with an inner cavity of the coulter mixer.
And a recovery tank is arranged under the filter pressing device and is connected with a recovery pump set.
An environment-friendly recycling method for sewage sludge treatment is characterized by comprising the following steps:
a. firstly, pumping sewage sludge in a collecting tank into a sludge treatment device, and fully stirring and aerating the sewage sludge by using a stirring and aerating device to ensure that sludge particles become small and are uniformly mixed;
b. discharging the homogeneous sludge water into a sludge settling cylinder through a control valve for standing and settling, discharging redundant gas, removing impurities floating on the liquid level by using an upper-layer filtering grid device, placing the settled sludge water into an anaerobic reaction device, performing anaerobic fermentation on the sludge water by using microorganisms, and collecting and utilizing the generated methane through a gas collecting device;
c. the sludge water after the full fermentation reaction is discharged into a reaction sludge dewatering device through a guide cylinder for preliminary dewatering operation, so that the fluidity of the sludge water is reduced;
d. conveying the dewatered sludge into a coulter mixer for crushing under the action of a screw conveyor, and adding additives into crushed sludge particles by an additive mixer and fully mixing;
e. the sludge particles enter a filter pressing device for squeezing and filtering water, and the sewage after being filtered by the filter pressing is recycled to the anaerobic reaction device through a recycling tank;
f. and then conveying the sludge blocks to a water-reducing ball forming machine for dewatering and ball forming to form small sludge balls, finally putting the small sludge balls into a hot air dryer for drying, and discharging the small sludge balls through a lignite outlet to form lignite.
The additive mixer is limestone, quicklime or an acid-base regulator.
The invention has the beneficial effects that:
1. the invention adopts the sludge treatment device to fully stir and aerate the sewage sludge, the sewage sludge is fully mixed and forms slurry, the subsequent anaerobic fermentation is facilitated, the slurry is kept stand and settled under the action of the sludge settling cylinder, impurities floating on the liquid surface are removed by utilizing the upper filtering grid device, and the treatment efficiency is high.
2. The invention utilizes the reaction sludge dewatering device to carry out preliminary dewatering, reduces the fluidity of sludge water, carries out extrusion water filtration on sludge particles in the filter pressing device, and finally carries out drying in the hot air dryer, thereby realizing multiple water filtration and dewatering, improving the traditional single dewatering and drying mode, and being capable of separating sewage and sludge with low energy consumption.
3. According to the invention, sludge slurry is utilized for anaerobic fermentation, the generated biogas can be recycled, lignite is formed after sludge treatment and drying, environment-friendly treatment and recycling of sewage sludge are realized, the energy recovery rate in the sewage sludge is improved, the quality of treated effluent reaches the discharge standard, the treatment cost is lower, and the energy-saving and environment-friendly effects are obvious.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view showing the internal structure of the sludge treatment apparatus of the present invention.
FIG. 3 is a schematic view showing the internal structure of the sludge settling tank of the present invention.
In the figure: the device comprises a collecting tank 1, a sludge treatment device 2, a movable cover 3, an air blower 4, a sludge settling cylinder 5, an anaerobic reaction device 6, a control valve 7, an air collecting device 8, a methane discharge pipe 9, a negative pressure pump 10, a guide cylinder 11, a reaction sludge dewatering device 12, a screw conveyor 13, a coulter mixer 14, an additive mixer 15, a filter pressing device 16, a recovery tank 17, a recovery pump set 18, a water reducing and balling machine 19, a hot air dryer 20, a lignite outlet 21, a rotating shaft 22, a rotating disc 23, a stirring rod 24, an arc-shaped plate 25, a driving motor 26, an air jet hole 27, a liquid level buoyancy lift 28, an upper layer filter grid 29, a push rod 30, a hydraulic pump 31, a liquid level nozzle 32, a floating impurity discharge port 33 and an air compressor 34.
Detailed Description
The invention is described in further detail below with reference to the following description of the drawings and the detailed description.
Referring to fig. 1 to 3, the sewage sludge treatment system and the environmental recycling method thereof of the present invention includes a collecting tank 1, and is characterized in that: the bottom of the collecting tank 1 is connected with a sludge treatment device 2, the upper end of the sludge treatment device 2 is provided with a movable cover 3, the bottom of the sludge treatment device 2 is connected with an external air blower 4 through a pipeline, the bottom of the sludge treatment device 2 is provided with a discharge port, the discharge port is provided with a control valve 7, a sludge settling cylinder 5 is arranged right below the discharge port, the outer side of the sludge settling cylinder 5 is provided with more than one anaerobic reaction device 6, electromagnetic valves are arranged between the sludge settling cylinder 5 and each anaerobic reaction device 6, the upper end of the anaerobic reaction device 6 is provided with a conical top cover, the top of the conical top cover is provided with a biogas discharge pipe 9, the biogas discharge pipe 9 is provided with a negative pressure pump 10, the negative pressure pump 10 is connected with a gas collecting device 8, the bottom of the anaerobic reaction device 6 is respectively provided with a guide cylinder 11, and the bottom, the outlet of the reaction sludge dewatering device 12 is connected with a coulter mixer 14 through a screw conveyor 13, the outlet at the bottom of the coulter mixer 14 is connected with a filter pressing device 16, the filter pressing device 16 is connected with a water reducing balling machine 19, the outlet end of the water reducing balling machine 19 is connected with the inlet end of a hot air dryer 20, and the outlet at the outer side of the hot air dryer 20 is a lignite outlet 21.
The sludge treatment device 2 comprises a cylinder wall, a rotating shaft 22, a rotating disc 23, stirring rods 24, an arc-shaped plate 25, a driving motor 26 and air injection holes 27, wherein the rotating shaft 22 is installed at the top of the cylinder wall through a bearing seat, the driving motor 26 is coaxially installed at the upper end of the rotating shaft 22, the rotating disc 23 is coaxially fixed on the rotating shaft 22, and a plurality of stirring rods 24 are radially and symmetrically arranged on the outer circumference of the rotating shaft 22.
The tail end of the stirring rod 24 is fixedly provided with an arc-shaped plate 25, the inner side surface of the arc-shaped plate 25 is evenly provided with a plurality of air injection holes 27, the air injection holes 27 face the direction of the rotating shaft 22, and the air injection holes 27 are connected with the air blower 4 through pipelines.
The two opposite sides of the side wall of the sludge settling cylinder 5 and the part on the liquid level are provided with floating impurity discharge ports 33, the inner side wall of the sludge settling cylinder 5 is provided with a sliding groove, a liquid level buoyancy lifting device 28 is installed in the sliding groove, a hydraulic pump 31 is installed on the liquid level buoyancy lifting device 28, a push rod 30 is installed at the movable end of the hydraulic pump 31, the outer end of the push rod 30 is hinged with an upper layer filter grid 29, the 1/5-1/4 part at the bottom of the upper layer filter grid 29 is immersed below the liquid level, and the upper layer filter grid 29 is arranged corresponding to the floating impurity discharge ports 33.
One side of the upper layer filtering grid 29 close to the center of the sludge settling cylinder 5 is provided with a liquid level nozzle 32, the liquid level nozzle 32 faces to a floating impurity discharge port 33 on the other side, and the liquid level nozzle 32 is connected with an air compressor 34 through an air conveying pipe.
An additive mixer 15 is installed at the upper end of the outer side of the coulter mixer 14, and the bottom outlet of the additive mixer 15 is communicated with the inner cavity of the coulter mixer 14.
A recovery tank 17 is arranged right below the filter pressing device 16, and the recovery tank 17 is connected with a recovery pump set 18.
An environment-friendly recycling method for sewage sludge treatment is characterized by comprising the following steps:
a. firstly, pumping sewage sludge in a collecting tank 1 into a sludge treatment device 2, and fully stirring and aerating the sewage sludge by using a stirring and aerating device to reduce sludge particles and uniformly mix the sludge particles;
b. discharging the homogeneous sludge water into a sludge settling cylinder 5 through a control valve for standing and settling, discharging redundant gas, removing impurities floating on the liquid level by using an upper-layer filtering grid device, putting the settled sludge water into an anaerobic reaction device 6, performing anaerobic fermentation on the sludge water by using microorganisms, and collecting and utilizing the generated methane through a gas collecting device 8;
c. the sludge water after the full fermentation reaction is discharged into a reaction sludge dewatering device 12 through a guide cylinder 11 for preliminary dewatering operation, so that the fluidity of the sludge water is reduced;
d. the dewatered sludge is conveyed to a coulter mixer 14 for crushing under the action of a screw conveyor 13, and an additive mixer 15 is used for adding additives into crushed sludge particles and fully mixing;
e. the sludge particles enter a filter pressing device 16 for squeezing and filtering water, and the sewage after being filtered by the filter pressing is recycled to the anaerobic reaction device 6 through a recycling tank 17;
f. then the sludge blocks are conveyed into a water reducing balling machine 19 for water removal balling to form small sludge balls, and finally the small sludge balls are put into a hot air dryer 20 for drying and are discharged through a brown coal outlet 21 to form brown coal.
The additive mixer 15 is limestone, quicklime or an acid-base regulator.
The collecting tank 1 is the same as a common collecting tank and is used for collecting and storing sewage and sludge, the bottom of the collecting tank 1 is connected with the sludge treatment device 2, and the sludge treatment device 2 utilizes the stirring and aerating device to fully stir and aerate the sewage and sludge, so that particles of the sludge are reduced and uniformly mixed to form homogeneous sludge water, and subsequent treatment is facilitated. The bottom of the sludge treatment device 2 is provided with a discharge port, a control valve 7 is arranged on the discharge port, a sludge settling cylinder 5 is arranged right below the discharge port, the sludge settling cylinder 5 is a cylindrical cylinder, and sludge water which is homogenized by stirring is subjected to standing settling in the sludge settling cylinder 5 to discharge redundant gas.
In order to improve the mixing and aeration effects of the sludge treatment device 2, the sludge treatment device 2 comprises a cylindrical wall, a rotating shaft 22, a rotating disc 23, stirring rods 24, an arc-shaped plate 25, a driving motor 26 and air injection holes 27, wherein the rotating shaft 22 is installed at the top of the cylindrical wall through a bearing seat, the driving motor 26 is coaxially installed at the upper end of the rotating shaft 22, the rotating disc 23 is coaxially fixed on the rotating shaft 22, a plurality of stirring rods 24 are radially and symmetrically arranged on the outer circumference of the rotating shaft 22, and the driving motor 26 drives the rotating disc 23 and the stirring rods 24 to continuously stir, so that sludge and muddy water are fully scattered and mixed, the sludge forms mud, and meanwhile, floating objects which are inconvenient for biological decomposition can automatically float out. The end of puddler 24 is fixed with arc 25, evenly is provided with a plurality of fumaroles 27 on the medial surface of arc 25, and fumaroles 27 is connected with air blower 4 through the pipeline towards the direction of rotation axis 22, fumaroles 27, and fumaroles 27 constantly aerifys to mud in the stirring, and jet-propelled direction scientific and reasonable along rotatory radial towards the axle center injection, has further improved and has mixed and aeration effect.
The sludge settling cylinder 5 is used as a sludge water standing and settling device, the treatment mode of liquid level floaters in the traditional sewage treatment is not scientific, the clearing effect is not good, and the collection and removal of the liquid level floaters in the standing and settling process are not facilitated. The invention is characterized in that floating impurity discharge ports 33 are arranged on the two opposite sides of the side wall of a sludge settling cylinder 5 and on the position of the liquid level, a sliding groove is arranged on the inner side wall of the sludge settling cylinder 5, a liquid level buoyancy device 28 is arranged in the sliding groove, the liquid level buoyancy device 28 is used for installing a floater removing device, and the floating height of the liquid level buoyancy device 28 can be adjusted according to the height change of the liquid level. The liquid level buoyancy device 28 is provided with a hydraulic pump 31, the movable end of the hydraulic pump 31 is provided with a push rod 30, the outer end of the push rod 30 is hinged with an upper layer filter grid 29, the 1/5-1/4 part at the bottom of the upper layer filter grid 29 is immersed below the liquid level, the upper layer filter grid 29 is arranged corresponding to the floating impurity discharge port 33, the hydraulic pump 31 can push the upper layer filter grid 29 to push all floaters on the liquid level to the floating impurity discharge port 33, and the efficient removal of the floaters is realized. In addition, in order to avoid the cleaning dead angle of the upper layer filter grid 29 and the omission of floaters with too small diameters, the invention also comprises a row of liquid level nozzles 32 arranged on one side of the upper layer filter grid 29 close to the center of the sludge settling cylinder 5, the liquid level nozzles 32 face the floating impurity discharge ports 33 on the other side, the positions of the floating impurity discharge ports 33 can be adjusted up and down movably, and the liquid level nozzles 32 are connected with an air compressor 34 through air pipes, so that the liquid level floaters can be cleaned by the upper layer filter grid 29, the omitted floaters with too small diameters can be blown away by the liquid level nozzles 32, the cleaning effect is greatly improved, and the interference on the sludge water standing and settling can not be generated.
More than one anaerobic reaction device 6 is arranged on the outer side of the sludge settling cylinder 5, electromagnetic valves are arranged between the sludge settling cylinder 5 and each anaerobic reaction device 6, and after the electromagnetic valves are opened, the corresponding anaerobic reaction devices 6 can flow into sludge water. The upper end of the anaerobic reaction device 6 is provided with a conical top cover, the anaerobic reaction device 6 can generate biogas in the process of utilizing microorganisms to carry out biological fermentation on sludge water, and the biogas can rise and continuously accumulate in the conical top cover. The top of the conical top cover is provided with a biogas discharge pipe 9, the biogas discharge pipe 9 is provided with a negative pressure pump 10, the negative pressure pump 10 is connected with the gas collecting device 8, the negative pressure pump 10 pumps biogas in the conical top cover into the gas collecting device 8, the gas collecting device 8 realizes the collection of biogas, and can provide the biogas for external users for use.
The bottom outlet of the colter mixer 14 is connected with a filter pressing device 16, and the filter pressing device 16 is used for extruding and discharging a large amount of moisture contained in the sludge block in a physical high-pressure mode, so that the subsequent processing and drying time is shortened. A recovery tank 17 is arranged right below the filter pressing device 16, the recovery tank 17 is connected with a recovery pump set 18, and the recovery pump set 18 conveys the recovered water to the anaerobic reaction device 6 or other front-end working procedures for reuse. The filter pressing device 16 is connected with a water reducing ball forming machine 19, and the water reducing ball forming machine 19 removes water from the sludge blocks to form sludge balls or sludge particles. The outlet end of the water reducing balling machine 19 is connected with the inlet end of the hot air dryer 20, the outlet of the outer side of the hot air dryer 20 is a lignite outlet 21, the sludge globules or sludge particles form lignite after passing through the hot air dryer 20, and the sludge globules or sludge particles can be further crushed and mixed before actual use.
The environment-friendly recycling method for sewage sludge treatment comprises the following steps: firstly, sewage sludge in a collecting tank 1 is pumped into a sludge treatment device 2, and a stirring aeration device is used for fully stirring and aerating the sewage sludge, so that particles of the sludge are reduced and uniformly mixed. And (2) discharging the homogeneous sludge water into a sludge settling cylinder 5 through a control valve for standing and settling, discharging redundant gas, removing impurities floating on the liquid level by using an upper-layer filtering grid device, putting the settled sludge water into an anaerobic reaction device 6, performing anaerobic fermentation on the sludge water by using microorganisms, and collecting and utilizing the generated methane through a gas collecting device 8. The sludge water after the full fermentation reaction is discharged into a reaction sludge dewatering device 12 through a guide shell 11 for preliminary dewatering operation, so that the fluidity of the sludge water is reduced. The dewatered sludge is conveyed to a coulter mixer 14 by a screw conveyor 13 to be crushed, and an additive mixer 15 adds an additive to crushed sludge particles and sufficiently mixes the crushed sludge particles. The sludge particles enter a filter pressing device 16 for squeezing and filtering water, and the sewage after being filtered by the filter pressing is recycled to the anaerobic reaction device 6 through a recycling tank 17. Then the sludge blocks are conveyed into a water reducing balling machine 19 for water removal balling to form small sludge balls, and finally the small sludge balls are put into a hot air dryer 20 for drying and are discharged through a brown coal outlet 21 to form brown coal. Realizes the environmental protection treatment and the reutilization of the sewage and the sludge, has high treatment efficiency and is convenient for the industrialized application.
Claims (7)
1. The utility model provides a sewage sludge treatment system, includes collecting pit (1), its characterized in that: the bottom of the collecting tank (1) is connected with a sludge treatment device (2), a movable cover (3) is arranged at the upper end of the sludge treatment device (2), the bottom of the sludge treatment device (2) is connected with an external air blower (4) through a pipeline, a discharge port is arranged at the bottom of the sludge treatment device (2), a control valve (7) is arranged on the discharge port, a sludge settling cylinder (5) is arranged right below the discharge port, more than one anaerobic reaction device (6) is arranged at the outer side of the sludge settling cylinder (5), electromagnetic valves are arranged between the sludge settling cylinder (5) and each anaerobic reaction device (6), a conical top cover is arranged at the upper end of the anaerobic reaction device (6), a biogas discharge pipe (9) is arranged at the top of the conical top cover, a negative pressure pump (10) is arranged on the biogas discharge pipe (9), and the negative pressure pump (10) is connected with a gas collecting, the bottom of the anaerobic reaction device (6) is respectively provided with a guide cylinder (11), the bottom of the guide cylinder (11) is connected with a reaction sludge dewatering device (12) through a pipeline, the outlet of the reaction sludge dewatering device (12) is connected with a coulter mixer (14) through a screw conveyor (13), the outlet at the bottom of the coulter mixer (14) is connected with a filter pressing device (16), the filter pressing device (16) is connected with a water-reducing ball forming machine (19), the outlet end of the water-reducing ball forming machine (19) is connected with the inlet end of a hot air dryer (20), and the outlet at the outer side of the hot air dryer (20) is a lignite outlet (21);
the sludge treatment device (2) comprises a cylindrical wall, a rotating shaft (22), a turntable (23), stirring rods (24), an arc-shaped plate (25), a driving motor (26) and air injection holes (27), wherein the rotating shaft (22) is installed at the top of the cylindrical wall through a bearing seat, the driving motor (26) is coaxially installed at the upper end of the rotating shaft (22), the turntable (23) is coaxially fixed on the rotating shaft (22), and a plurality of stirring rods (24) are radially and symmetrically arranged on the outer circumference of the rotating shaft (22);
an arc-shaped plate (25) is fixed at the tail end of the stirring rod (24), a plurality of air injection holes (27) are uniformly formed in the inner side surface of the arc-shaped plate (25), the air injection holes (27) face the direction of the rotating shaft (22), and the air injection holes (27) are connected with the air blower (4) through a pipeline;
the utility model discloses a sludge settling drum, including sludge settling drum (5), liquid level buoyancy lift ware (28), hydraulic pump (31) are installed to liquid level buoyancy lift ware (28), push rod (30) are installed to the expansion end of hydraulic pump (31), the outer end of push rod (30) articulates there is upper filter grid (29), 1/5-1/4 position submergence of upper filter grid (29) bottom is below the liquid level, upper filter grid (29) are corresponding to floating impurity discharge port (33) and set up, the sliding tray has been seted up on the inside wall of sludge settling drum (5) both sides that the lateral wall is relative and lie in the liquid level, liquid level buoyancy lift ware (28) is last to install hydraulic pump (31).
2. The sewage sludge treatment system of claim 1, wherein: one side of the upper layer filter grid (29) close to the center of the sludge settling cylinder (5) is provided with a liquid level nozzle (32), the liquid level nozzle (32) faces to a floating impurity discharge port (33) on the other side, and the liquid level nozzle (32) is connected with an air compressor (34) through an air conveying pipe.
3. The sewage sludge treatment system of claim 1, wherein: an additive mixer (15) is installed at the upper end of the outer side of the coulter mixer (14), and the bottom outlet of the additive mixer (15) is communicated with the inner cavity of the coulter mixer (14).
4. The sewage sludge treatment system of claim 1, wherein: a recovery tank (17) is arranged right below the filter pressing device (16), and the recovery tank (17) is connected with a recovery pump set (18).
5. An environmentally friendly recycling method of sewage sludge treatment using the sewage sludge treatment system of claim 1, comprising the steps of:
a. firstly, pumping sewage sludge in a collecting tank (1) into a sludge treatment device (2), and fully stirring and aerating the sewage sludge by using a stirring and aerating device to reduce sludge particles and uniformly mix the sludge particles;
b. discharging the homogeneous sludge water into a sludge settling cylinder (5) through a control valve for standing and settling, discharging redundant gas, removing impurities floating on the liquid level by using an upper-layer filtering grid device, putting the settled sludge water into an anaerobic reaction device (6), performing anaerobic fermentation on the sludge water by using microorganisms, and collecting and utilizing the generated methane through a gas collecting device (8);
c. sludge water after the full fermentation reaction is discharged into a reaction sludge dewatering device (12) through a guide cylinder (11) for primary dewatering operation, so that the fluidity of the sludge water is reduced;
d. the dewatered sludge is conveyed to a coulter mixer (14) for crushing under the action of a screw conveyor (13), and an additive mixer (15) is used for adding additives into crushed sludge particles and fully mixing;
e. the sludge particles enter a filter pressing device (16) for squeezing and filtering water, and the sewage after being filtered by the filter pressing is recycled into the anaerobic reaction device (6) through a recycling tank (17);
f. then the sludge blocks are conveyed into a water reducing ball forming machine (19) for water removal and ball forming to form small sludge balls, and finally the small sludge balls are put into a hot air dryer (20) for drying and are discharged through a lignite outlet (21) to form lignite.
6. The sewage sludge treatment environment-friendly recycling method according to claim 5, characterized in that: the additive is an acid-base regulator.
7. The sewage sludge treatment environment-friendly recycling method according to claim 5, characterized in that: the additive is limestone or quicklime.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610641940.8A CN106430809B (en) | 2016-08-08 | 2016-08-08 | Sewage sludge treatment system and environment-friendly recycling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610641940.8A CN106430809B (en) | 2016-08-08 | 2016-08-08 | Sewage sludge treatment system and environment-friendly recycling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106430809A CN106430809A (en) | 2017-02-22 |
| CN106430809B true CN106430809B (en) | 2021-05-07 |
Family
ID=58184230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610641940.8A Active CN106430809B (en) | 2016-08-08 | 2016-08-08 | Sewage sludge treatment system and environment-friendly recycling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106430809B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246613A (en) * | 2017-08-06 | 2017-10-13 | 无锡绿麦环保科技有限公司 | The explosion-proof incineration disposal system of solid waste |
| CN107270299A (en) * | 2017-08-06 | 2017-10-20 | 无锡绿麦环保科技有限公司 | Solid waste incineration disposal system |
| CN107686211B (en) * | 2017-09-21 | 2022-08-23 | 舟山巨洋技术开发有限公司 | Biological treatment and power generation system |
| CN107540123B (en) * | 2017-09-21 | 2022-08-23 | 舟山巨洋技术开发有限公司 | Three-dimensional processing system of winery wastes material |
| CN108218064A (en) * | 2017-12-28 | 2018-06-29 | 武汉理工大学 | A kind of sewage-treatment plant and its application method for ship life |
| CN108855505B (en) * | 2018-06-25 | 2020-06-16 | 工大环境股份有限公司 | Sludge impurity removal treatment system |
| CN112557266A (en) * | 2020-12-04 | 2021-03-26 | 天津大拇指环境工程有限公司 | SV automatic detection device, SV automatic detection system, SV automatic detection method and sewage treatment device |
| CN112960891B (en) * | 2021-02-08 | 2022-12-02 | 杭州国泰环保科技股份有限公司 | Multifunctional stirring type sludge low-temperature drying device |
| CN113321395B (en) * | 2021-04-08 | 2023-05-09 | 杭州国泰环保科技股份有限公司 | Quick sludge treatment device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1316534A1 (en) * | 2001-11-30 | 2003-06-04 | Traitement Valorisation Decontamination | Method for composting a slurry by sequential filtration with a carbonaceous substrate and installation thereof |
| CN1810940A (en) * | 2006-03-03 | 2006-08-02 | 清华大学 | Sludge fuel stick and its prepn |
| CN101628815A (en) * | 2009-08-14 | 2010-01-20 | 李康敏 | Processing method of industrial solid waste |
| CN101891343A (en) * | 2010-07-12 | 2010-11-24 | 西安建筑科技大学 | Method for biologically purifying municipal sewage and recovering resources |
| CN202279732U (en) * | 2011-10-20 | 2012-06-20 | 李卫 | Jet type aeration stirring device |
| CN202297333U (en) * | 2011-08-18 | 2012-07-04 | 江苏金山环保科技股份有限公司 | Dehydration drying low-temperature pyrolysis sludge treatment device |
| CN203530269U (en) * | 2013-09-30 | 2014-04-09 | 珠海市伟力高生物科技有限公司 | Treatment system of sludge transformed fuel |
| CN203874516U (en) * | 2014-03-31 | 2014-10-15 | 山西晋城无烟煤矿业集团有限责任公司 | Automatic dross pushing device |
-
2016
- 2016-08-08 CN CN201610641940.8A patent/CN106430809B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1316534A1 (en) * | 2001-11-30 | 2003-06-04 | Traitement Valorisation Decontamination | Method for composting a slurry by sequential filtration with a carbonaceous substrate and installation thereof |
| CN1810940A (en) * | 2006-03-03 | 2006-08-02 | 清华大学 | Sludge fuel stick and its prepn |
| CN101628815A (en) * | 2009-08-14 | 2010-01-20 | 李康敏 | Processing method of industrial solid waste |
| CN101891343A (en) * | 2010-07-12 | 2010-11-24 | 西安建筑科技大学 | Method for biologically purifying municipal sewage and recovering resources |
| CN202297333U (en) * | 2011-08-18 | 2012-07-04 | 江苏金山环保科技股份有限公司 | Dehydration drying low-temperature pyrolysis sludge treatment device |
| CN202279732U (en) * | 2011-10-20 | 2012-06-20 | 李卫 | Jet type aeration stirring device |
| CN203530269U (en) * | 2013-09-30 | 2014-04-09 | 珠海市伟力高生物科技有限公司 | Treatment system of sludge transformed fuel |
| CN203874516U (en) * | 2014-03-31 | 2014-10-15 | 山西晋城无烟煤矿业集团有限责任公司 | Automatic dross pushing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106430809A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106430809B (en) | Sewage sludge treatment system and environment-friendly recycling method thereof | |
| CN105461177A (en) | Method for treating landfill leachate | |
| CN202945077U (en) | Air floating device used in superficial layer | |
| CN106044913B (en) | One kind separation method of sludge condensation containing coal and device | |
| CN204550363U (en) | Miniature City septic tank ight soil recycling sludge is dissolved station | |
| CN208022859U (en) | A kind of arable land change system for sanitary sewage | |
| CN207525100U (en) | A kind of drum type brake integrated sewage treating apparatus | |
| CN205917137U (en) | System of recycling is retrieved to mud among coal chemical wastewater | |
| CN215439997U (en) | Dry-type anaerobic digestion liquid dewatering system | |
| CN202643369U (en) | Isolation type multiphase balanced air floatation device | |
| CN109231548A (en) | A kind of iron and steel enterprise's industrial water optimization system | |
| CN204958651U (en) | Oiliness chemical industry sewage treatment plant | |
| CN201031177Y (en) | Anaerobic reactor for processing high solid slag organic wastewater | |
| CN209835896U (en) | Novel bean product wastewater treatment system | |
| CN110028206B (en) | Treatment method of weaving wastewater | |
| CN208500506U (en) | High efficiency anaerobic reactor | |
| CN205603327U (en) | Dirty special slagging -off machine of biological coagulation excrement | |
| CN209259898U (en) | A kind of textile waste processing system | |
| CN112979128A (en) | Blue algae flotation and dehydration device | |
| CN113087363A (en) | Deep dehydration method for biogas residues | |
| CN202054631U (en) | Waste cement mortar circulating treatment system | |
| CN112723555A (en) | Microbial fermentation device for sewage treatment | |
| CN205575774U (en) | Efficient D -UASB reactor | |
| CN204897642U (en) | Bean products factory effluent disposal system | |
| CN213895534U (en) | Automatic filtering device for sludge inoculation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |