CN210012743U - Municipal sludge pretreatment system - Google Patents

Abstract

The utility model provides a municipal administration sludge pretreatment system, is including setting gradually and the sludge conditioning device and the sludge dewatering device who is connected with the control box, wherein is provided with forward conveying pipeline and reverse back flow between sludge conditioning device and sludge dewatering device, be provided with first branch pipe and second branch pipe on the conveying pipeline, and be provided with high-pressure sludge pump on the first branch pipe, be provided with low pressure sludge pump on the second branch pipe, sludge dewatering device still connects storage water tank and mud pusher, is provided with high-pressure water pump between sludge dewatering device and storage water tank, high-pressure sludge pump, low pressure sludge pump, high-pressure water pump and mud pusher all with the control box is connected. The utility model discloses especially, be fit for town sewage treatment, area is little, and degree of automation is high, and the treatment effect is good, has fine practical application prospect.

Description

Municipal sludge pretreatment system

Technical Field

The utility model relates to a sludge treatment technical field specifically is a municipal administration sludge pretreatment system.

Background

Municipal sludge is a solid separated in the process of urban domestic sewage treatment, the technology of sludge treatment in China is far behind the development of sewage treatment technology compared with sewage, an early sewage treatment plant generally strips sewage and sludge treatment units because of no strict sludge discharge supervision, and in order to pursue simple sewage treatment rate, the sludge treatment is simplified and ignored as much as possible, even wet sludge which is not treated is transported outside randomly and is simply buried or stacked, so that a plurality of large cities have the phenomenon of sludge enclosing and begin to spread to medium and small cities. The growing sludge causes serious pollution to the environment, and the living space of human offspring is inevitably greatly reduced.

Along with the reinforcing of people's environmental protection consciousness, the mud that current town sewage treatment plant produced mostly adopts the belt, crouch the spiral shell, mode such as pile spiral shell machine carries out simple dehydration, this process automation degree is low, operation workman intensity of labour is big, the running cost is high, the easy jam of mud influences whole treatment effeciency in pipeline or machine in the operation process, and the mud moisture content is high (about 80%) after the dehydration, can not satisfy sanitary landfill (the moisture content is less than or equal to 60%) requirement, greatly increased the cost of transportation, still be unfavorable for follow-up mixed burning, further processing requirements such as low temperature mummification, therefore, the utility model discloses aim at developing a system that is adapted to municipal sludge treatment to better satisfy actual need.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem of providing a municipal sludge pretreatment system to solve the defects in the background technology.

The utility model provides a technical problem adopt following technical scheme to realize:

the utility model provides a municipal administration sludge pretreatment system, is provided with forward conveying pipeline and reverse back flow including setting gradually and the sludge conditioning device and the sludge dewatering device who is connected with the control box between sludge conditioning device and sludge dewatering device, be provided with first branch pipe and second branch pipe on the conveying pipeline side by side, and be provided with high-pressure sludge pump on the first branch pipe, be provided with the low pressure sludge pump on the second branch pipe, sludge dewatering device still connects storage water tank and mud pusher, is provided with the high pressure water pump between sludge dewatering device and storage water tank, high pressure sludge pump, low pressure sludge pump, high pressure water pump, mud pusher all with the control box is connected, and wherein mud pusher is arranged in the central inlet pipe of propelling movement sludge dewatering device residual mud and advances and make residual mud pass through the back flow gets into among the sludge conditioning device.

The utility model discloses in, the device is taked care of to mud is provided with rabbling mechanism in taking care of the jar including taking care of the jar, takes care of the jar and still is provided with corresponding first allotment case and second allotment case, and first allotment case and second allotment case all are provided with pneumatic valve and flowmeter with taking care of a jar junction.

The utility model discloses in, the feed end of first branch pipe and second branch pipe all is provided with the pneumatic valve, and the discharge end all is provided with pressure sensor.

The utility model discloses in, sludge dewatering device is unfamiliar plate and frame pressure filter.

The utility model discloses in, mud pusher includes compressed air generating device and compressed air pipe, compressed air generating device through compressed air pipe with the trailing end connection of diaphragm plate and frame pressure filter.

The utility model discloses in, be provided with pneumatic valve and pressure sensor on the back flow equally.

Has the advantages that: municipal administration mud pretreatment systems, especially be fit for town sewage treatment, its investment cost is low, area is little, easy operation, degree of automation is high, has greatly reduced operation workman's intensity of labour, and then reduces the running cost, just the utility model discloses can reduce municipal administration mud moisture content to 55 ~ 60%, satisfy the requirement of dealing with such as sanitary landfill or outward transport and follow-up mixed incineration, low temperature mummification, and the utility model discloses the running cost is low, the fault incidence of mud jam pipeline or machine is low, has fine practicality and actual popularization and application and worth.

Drawings

Fig. 1 is a schematic diagram of a preferred embodiment of the present invention.

Wherein: 1. a sludge storage tank; 2. a conditioning tank; 3. a diaphragm plate and frame filter press; 4. a first blending box; 5. a second blending box; 6. a stirring mechanism; 7. a high pressure sludge pump; 8. a low pressure sludge pump; 9. a pressure sensor; 10. a pneumatic valve; 11. a return pipe; 12. a high pressure water pump; 13. a water storage tank; 14. a control box; 15. a compressed air generating device; 16. compressing the air pipe; 17. and (4) a discharge port.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to a preferred embodiment of a municipal sludge pretreatment system of fig. 1, in this embodiment,

the utility model provides a municipal administration sludge pretreatment system, including set gradually and the sludge conditioning device and the sludge dewatering device who is connected with control box 14, wherein the sludge conditioning device is including taking care of jar 2, take care of jar 2 and sludge storage jar 1 and be connected, sludge storage jar 1 takes place the source through mud delivery branch pipe and outside mud and is connected, be provided with rabbling mechanism 6 in the taking care of jar 2, taking care of jar 2 still is provided with corresponding first allotment case 4 and second allotment case 5, first allotment case 4 and second allotment case 5 all are provided with pneumatic valve and flowmeter with taking care of 2 junctions of jar, wherein first allotment case 4 is arranged in allotment PAC and will allot good PAC and add in taking care of jar 2, second allotment case 5 is arranged in allotment PAM and will allot good PAM and add in taking care of jar.

The sludge dewatering device is a membrane plate-and-frame filter press 3, the membrane plate-and-frame filter press 3 is connected with a water storage tank 13 and a sludge pushing device, a high-pressure water pump 12 is arranged between the membrane plate-and-frame filter press 3 and the water storage tank 13, the high-pressure water pump 12 is used for inputting water into a membrane cavity of the membrane plate-and-frame filter press 3, the membrane is bulged so as to exert a better pressure effect on mud in the filter chamber, the water flows back into the water storage tank 13 for recycling after passing through the membrane plate-and-frame filter press 3, the sludge pushing device comprises a compressed air generating device 15 and a compressed air pipe 16, the compressed air generating device 15 is connected with the tail end of the diaphragm plate-and-frame filter press 3 through the compressed air pipe 16, used for pushing residual sludge in a central feeding pipe of the membrane plate and frame filter press 3 so as to lead the residual sludge to enter the conditioning tank 2 through a return pipe 11, prevent the sludge from being stuck and remained in the central feeding pipe of the membrane plate-and-frame filter press 3 to cause machine failure.

A forward feed pipe and a reverse return pipe are arranged between the conditioning tank 2 and the diaphragm plate and frame filter press 3, a first branch pipe and a second branch pipe which are parallel are arranged on the feed pipe, a high-pressure sludge pump 7 is arranged on the first branch pipe, the high-pressure sludge pump 7 is of a low-flow high-pressure type, the pressure is 1.6MPa, a low-pressure sludge pump 8 is arranged on the second branch pipe, the low-pressure sludge pump 8 is of a high-flow low-pressure type, the pressure is 0.6MPa, the pressure in the chamber is low when no material exists in the filter chamber of the program control diaphragm plate and frame filter press, the high-flow low-pressure sludge pump 8 of the second branch pipe is adopted for conveying, and more materials are conveyed in; when the material advances certain volume, when producing certain pressure in the straining chamber, trade the high-pressure sludge pump 7 transport material of low discharge high pressure on the first branch pipe again, apply certain pressure to the material in the straining chamber in the time of the feeding, extrude the straining chamber as much as possible with filtrating, thereby prevent that mud from gluing and detaining and reduce conveying efficiency when reaching higher efficiency, in this embodiment of the market, the feed end of first branch pipe and second branch pipe all is provided with pneumatic valve 10, the discharge end all is provided with pressure sensor 9, pressure sensor 9 communicates with the feed end of diaphragm plate and frame filter press 3, be used for detecting straining chamber and intraductal pressure.

The utility model discloses an operation method does: pumping the sludge with the water content meeting the requirement in the sludge storage tank 1 into a conditioning tank 2; starting the stirring mechanism 6; the first blending box 4 is started to send PAC medicament into the conditioning tank 2, and the device is stopped when running to a set time; then the second preparation box 5 is started, the PAM medicament is sent into the conditioning tank 2, and the operation is stopped when the set time is reached; opening the second branch pipe and starting a low-pressure sludge pump 8, closing the second branch pipe and starting a first branch pipe and a high-pressure sludge pump 7 when a pressure sensor at the tail end of the second branch pipe detects that the pressure reaches a certain degree, closing the first branch pipe when a pressure sensor at the tail end of the first branch pipe detects that the pressure reaches a preset range, starting a high-pressure water pump 9 at the moment, starting a compressed air generating device 15 after the operation reaches a preset time, blowing liquid sludge remained in a central feeding pipe of the program-controlled diaphragm plate and frame filter press 3 into the sludge conditioning tank 2 along a return pipe 11, and stopping the blowing process according to a set time, then the squeezed water in the membrane plate and frame filter press 3 is discharged, the water content of the cake-shaped sludge in the membrane plate and frame filter press 3 is 55% -60%, the sludge is discharged through a discharge hole 17 of the membrane plate and frame filter press 3, and then the sludge is conveyed to a specified place by a material conveying line.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a municipal administration sludge pretreatment system, its characterized in that, including set gradually and sludge conditioning device and the sludge dewatering device who is connected with the control box, be provided with forward conveying pipeline and reverse back flow between sludge conditioning device and sludge dewatering device, be provided with first branch pipe and second branch pipe on the conveying pipeline side by side, and be provided with high-pressure sludge pump on the first branch pipe, be provided with low pressure sludge pump on the second branch pipe, sludge dewatering device still connects storage water tank and mud pusher, is provided with high-pressure water pump between sludge dewatering device and storage water tank, high-pressure sludge pump, low-pressure sludge pump, high-pressure water pump and mud pusher all with the control box is connected.

2. The municipal sludge pretreatment system according to claim 1, wherein the sludge conditioning device comprises a conditioning tank, a stirring mechanism is arranged in the conditioning tank, the conditioning tank is further provided with a first conditioning box and a second conditioning box which correspond to each other, and pneumatic valves and flow meters are arranged at the joints of the first conditioning box and the conditioning tank and the joints of the second conditioning box and the conditioning tank.

3. The municipal sludge pretreatment system according to claim 2, wherein the first and second leg feed ends are each provided with a pneumatic valve and the discharge end is each provided with a pressure sensor.

4. The municipal sludge pretreatment system of claim 3, wherein the sludge dewatering apparatus is a membrane plate and frame filter press.

5. The municipal sludge pretreatment system according to claim 4, wherein the sludge pushing device comprises a compressed air generating device and a compressed air pipe, and the compressed air generating device is connected with the tail end of the membrane plate-and-frame filter press through the compressed air pipe.

6. The municipal sludge pretreatment system according to claim 5, wherein a pneumatic valve and a pressure sensor are provided on the return pipe.

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