CN219156744U

CN219156744U - Sludge drying device capable of sterilizing

Info

Publication number: CN219156744U
Application number: CN202223536322.7U
Authority: CN
Inventors: 王学科; 焦海亮; 张铁军; 谢迎辉; 穆童
Original assignee: Tianjin Enew Environmental Protection Engineering Co ltd
Current assignee: Tianjin Enew Environmental Protection Engineering Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-09
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to a sterilizable sludge drying device, which belongs to the technical field of sludge treatment and comprises a sludge storage bin, a tempering sterilization tank, a stirrer, a plate frame dehydrator and a low-temperature belt type drying machine which are sequentially communicated through a sludge pipeline, wherein a water tank and a sterilizing agent dosing device are arranged on the tempering sterilization tank, a granulator is arranged between the plate frame dehydrator and the low-temperature belt type drying machine, and the tempering sterilization tank and the low-temperature belt type drying machine are respectively communicated with a biological deodorization spray tower through gas pipelines. According to the utility model, bacteria in the sludge can be killed by adding the conditioning sterilization tank, the generation of subsequent sulfides and ammonia substances is reduced, the generation amount of odor in the drying process is reduced, the odor amount of a subsequent deodorizing device is reduced, the corrosion of each drying device is reduced, and the investment of cost is reduced.

Description

Sludge drying device capable of sterilizing

Technical Field

The utility model belongs to the technical field of sludge treatment, and particularly relates to a sterilizable sludge drying device.

Background

At present, the yield of sludge in urban domestic sewage plants is gradually increased, and the sludge is harmless and difficult to reduce due to the fact that the water content of the sludge is high and the components are complex.

The technology capable of achieving the maximum reduction of the sludge in the prior art is a dehydration-drying-incineration technology route of the sludge.

Odor is generated in each link of sludge treatment, but in the drying process, a large number of microbial cells such as bacteria exist in the sludge, so that the most malodorous gas generated by drying is generated, such as hydrogen sulfide, methyl mercaptan, ammonia water and the like.

The existing deodorizing system mainly comprises spraying, ion deodorizing and other modes, and is characterized in that odor generated in each link is collected to a deodorizing device and then is concentrated for odor treatment. Because the odor is more generated and the components are more complex, the equipment pressure of the deodorization system is larger and the damage is serious.

Disclosure of Invention

The utility model aims to solve the problem of providing a sterilizable sludge drying device which can reduce the odor generation amount in the drying process, reduce corrosion and reduce cost investment.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a but mud mummification device of sterilization, includes storage mud storehouse, quenching and tempering sterilization jar, mixer, board frame hydroextractor and the low temperature area desiccator that communicates in proper order through the mud pipeline, be provided with water tank and sterilant charge device on the quenching and tempering sterilization jar, the output of water tank and sterilant charge device all is linked together with the shower head in the quenching and tempering sterilization jar.

Further, a granulator is arranged between the plate frame dehydrator and the low-temperature belt type desiccator.

Further, the tempering sterilization tank and the low-temperature belt dryer are respectively communicated with a biological deodorization spray tower through a gas pipeline, and the biological deodorization spray tower is used for deodorizing and discharging gas.

Further, a stirring device is arranged in the tempering sterilization tank.

Further, a filter aid adding port is arranged on the stirrer and used for adding filter aid.

The utility model has the following specific effects:

1. by adding the conditioning sterilization tank, bacteria in the sludge can be killed (the structure of cells is not damaged), the generation of subsequent sulfides and ammonia substances is reduced, the odor generation amount in the drying process is reduced, the odor amount of a subsequent deodorizing device is reduced, the corrosion of all drying equipment is reduced, and the cost investment is reduced.

2. The utility model can reduce the water content of the sludge by stirring and filtering, increase the porosity of the dehydrated sludge, and create conditions for subsequent drying and incineration.

Drawings

The advantages and the manner of carrying out the utility model will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which the content shown is meant to illustrate, but not to limit, the utility model in any sense, and wherein:

fig. 1 is a schematic structural view of the present utility model.

In the figure:

1. a mud storage bin; 2. tempering and sterilizing a tank; 3. a stirrer; 4. a plate frame dehydrator; 5. a granulator; 6. a low-temperature belt dryer; 7. an induced draft fan; 8. biological deodorization spray tower; 9. a discharge pump; 10. a sludge transfer pump; 11. a high pressure pump; 2-1, a water tank; 2-2, a sterilizing agent adding device.

Detailed Description

As shown in fig. 1, the sterilizable sludge drying device comprises a sludge storage bin 1, a tempering sterilization tank 2, a stirrer 3, a plate frame dehydrator 4, a granulator 5 and a low-temperature belt dryer 6 which are sequentially communicated through a sludge pipeline, wherein the tempering sterilization tank 2 and the low-temperature belt dryer 6 are respectively communicated with a biological deodorization spray tower 8 through gas pipelines, and the biological deodorization spray tower 8 is used for deodorizing and discharging gas.

Wherein, the tempering sterilization tank 2 is provided with a water tank 2-1 and a sterilizing agent dosing device 2-2, and the output ends of the water tank 2-1 and the sterilizing agent dosing device 2-2 are communicated with a spray header in the tempering sterilization tank 2. The sterilizing agent in the sterilizing agent adding device 2-2 is calcium hypochlorite, hypochlorous acid, calcium oxide or oxidant. A stirring device is arranged in the tempering sterilization tank 2.

Wherein, the stirrer 3 is provided with a filter aid adding port for adding filter aid. The filter aid is rice hull powder.

The working process comprises the following steps:

the sludge in the sludge storage bin 1 is pumped into the quality-adjusting sterilizing tank 2 through the discharging pump 9, at the moment, the water content of the sludge in the sludge storage bin 1 is 80% -90%, the water content of the sludge is adjusted to 95% -97% by utilizing the water tank 2-1, then the chemical adding is sprayed, the chemical adding is carried out, the spraying is carried out while stirring, the aim of sterilizing is achieved, the yield of odor in the subsequent drying process is reduced, and the cost of a deodorizing system is reduced.

The sterilized sludge is conveyed to a stirrer 3 through a sludge conveying pump 10, the sludge and a filter aid are uniformly stirred by the stirrer 3 and then conveyed to a plate-frame dehydrator 4, the sludge is dehydrated to a water content of 65% -70%, the sludge is granulated by a granulator 5 to a particle size of 5-20mm and a length of 4-6cm, and finally the sludge is dried by a low-temperature belt dryer 6, so that the dried sludge can be used as biomass fuel to be combined with subsequent incineration treatment.

The drying temperature of the low-temperature belt dryer 6 is controlled to be 50-70 ℃ and the dryer is sealed.

In addition, the odor of the low-temperature belt dryer 6 is pumped to the biological deodorization spray tower 8 by the induced draft fan 7, and the gas in the tempering sterilization tank 2 is also sent to the biological deodorization spray tower 8 by the high-pressure pump 11. The biological deodorization spray tower 8 is used for deodorizing the odor generated by sterilization and drying and then discharging the odor into the atmosphere.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by this patent.

Claims

1. A sterilizable sludge drying device, which is characterized in that: the device comprises a sludge storage bin, a tempering sterilization tank, a stirrer, a plate frame dehydrator and a low-temperature belt type desiccator which are sequentially communicated through a sludge pipeline, wherein a water tank and a sterilizing agent dosing device are arranged on the tempering sterilization tank, and the output ends of the water tank and the sterilizing agent dosing device are communicated with a spray header in the tempering sterilization tank.

2. The sterilizable sludge drying device of claim 1, wherein: a granulator is arranged between the plate frame dehydrator and the low-temperature belt type desiccator.

3. The sterilizable sludge drying device of claim 1, wherein: the tempering sterilization tank and the low-temperature belt dryer are respectively communicated with the biological deodorization spray tower through gas pipelines.

4. The sterilizable sludge drying device of claim 1, wherein: and a stirring device is arranged in the tempering sterilization tank.

5. The sterilizable sludge drying device of claim 1, wherein: the filter aid adding port is arranged on the stirrer.