CN210825888U

CN210825888U - Sequencing batch type sludge aerobic fermentation treatment device

Info

Publication number: CN210825888U
Application number: CN201921490533.7U
Authority: CN
Inventors: 史东明; 屈利良; 李艳杰
Original assignee: SHANGHAI WATERLY ENGINEERING TECH Ltd
Current assignee: SHANGHAI WATERLY ENGINEERING TECH Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-06-23
Anticipated expiration: 2029-09-09

Abstract

The utility model discloses a sequencing batch mud aerobic fermentation processing apparatus, include: the inlet of the mixing device is respectively connected with a sludge bin, an auxiliary material bin and a material returning bin, the fermented raw materials after being mixed are fed into a plurality of SBF high-temperature aerobic fermentation cabins through a feeding device, a screw mechanism capable of rotating forwards and backwards is arranged in each SBF high-temperature aerobic fermentation cabin, and an aeration device is further arranged in each SBF high-temperature aerobic fermentation cabin; the fermented crude product after aerobic fermentation is sent into a screening device through a discharging device, the undersize material is a finished product, and the oversize material is transported back to a material bin through a conveying device. The utility model discloses think about novel science, technology simple structure solves the problem that area is big, the energy consumption is high that current mud aerobic fermentation technology exists, improves work efficiency, reduces personnel's input, solves fermentation process secondary pollution, can bring economic benefits and social for the enterprise.

Description

Sequencing batch type sludge aerobic fermentation treatment device

Technical Field

The utility model relates to a mud aerobic fermentation handles the field, concretely relates to sequencing batch mud aerobic fermentation processing apparatus.

Background

The sludge is a product in sewage treatment, is rich in organic matters and nutrient substances, and has become a global research hotspot with the deepening of sewage resource research, so that the urban sludge in China has large quantity and poor quality and is very rare in the world; the existing foreign sludge treatment theory and technology cannot practically solve the current special dilemma, and a green low-carbon safe theoretical system and a systematic solution of sludge in China are urgently needed to be formed through scientific and technological innovation.

The sludge resource is more and more paid attention, and the sludge resource energy accords with the current technological development level. The aerobic fermentation of the sludge can efficiently recycle C, N, P in the municipal sludge as resources and can replace part of the requirements of nitrogen and phosphate fertilizers.

The traditional sludge treatment method comprises the following steps: incineration, landfill and land utilization. The incineration process is mostly adopted abroad, but the investment is huge, and the atmospheric pollution is easily caused; landfill is mostly adopted in China, but a large amount of land is occupied, secondary pollution to the environment can be caused, and appropriate treatment modes are selected more and more cautiously along with deep understanding of the defects of the landfill. The land-utilizable technology after sludge disposal comprises an aerobic fermentation technology and an anaerobic digestion technology, and the aerobic fermentation sludge treatment technology is preferentially recommended by comprehensively considering the environmental impact and the investment cost.

The sludge aerobic fermentation process mainly comprises concrete tank type fermentation, reactor fermentation and the like, and the development of the sludge aerobic fermentation technology is limited to a certain extent due to the defects of poor operation environment, easy secondary pollution generation in the fermentation process, large floor area, high operation cost and the like, so that the development of the sludge aerobic fermentation technology is researched and developed, the investment and operation cost are reduced, the land use area is saved, the high efficiency, low consumption, continuous and stable operation in the fermentation process are ensured, no secondary pollution is caused, and the sludge aerobic fermentation process has very important significance for large-scale popularization and application of the sludge aerobic fermentation technology in China.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a sequencing batch sludge aerobic fermentation treatment device and a treatment process thereof.

In order to realize the utility model discloses an aim, the technical scheme who adopts is:

a sequencing batch sludge aerobic fermentation treatment device comprises:

the inlet of the mixing device is respectively connected with a sludge bin, an auxiliary material bin and a material returning bin, the fermented raw materials after being mixed are fed into a plurality of SBF high-temperature aerobic fermentation cabins through a feeding device, a screw mechanism capable of rotating forwards and backwards is arranged in each SBF high-temperature aerobic fermentation cabin, and an aeration device is further arranged in each SBF high-temperature aerobic fermentation cabin; the fermented crude product after aerobic fermentation is sent into a screening device through a discharging device, the undersize material is a finished product, and the oversize material is transported back to a material bin through a conveying device.

In a preferred embodiment of the present invention, the plane layout of the SBF thermophilic aerobic fermentation cabin is arranged side by side in two rows.

In a preferred embodiment of the utility model, the feed inlet and the discharge outlet of the SBF high-temperature aerobic fermentation chamber are both arranged at the front part of the fermentation chamber, and the feed inlet is arranged at the upper part and the discharge outlet is arranged at the lower part.

In a preferred embodiment of the present invention, the mixing device is connected to the sludge bin, the auxiliary bin and the return bin through first to third quantitative screw conveyers, respectively.

In a preferred embodiment of the utility model, the aeration device is positioned at the bottom of the SBF high-temperature aerobic fermentation cabin and is connected with an external oxygen supply device.

In a preferred embodiment of the utility model, the device further comprises a tail gas absorption device which is connected with the SBF high-temperature aerobic fermentation cabin and is used for absorbing tail gas generated in the sludge fermentation process in the SBF high-temperature aerobic fermentation cabin.

The utility model discloses a preferred embodiment, still include one with screening material conveyor, finished product storehouse, packagine machine and the carloader that the screening device lower extreme links to each other, undersize material further obtains the finished product packing through the screening material conveyor, finished product storehouse, packagine machine and the carloader that link to each other.

The beneficial effects of the utility model reside in that:

the utility model discloses think about novel science, technology simple structure solves the problem that area is big, the energy consumption is high that current mud aerobic fermentation technology exists, improves work efficiency, reduces personnel's input, solves fermentation process secondary pollution, can bring economic benefits and social for the enterprise.

Drawings

Fig. 1 is a flow chart of the structure of the present invention.

Detailed Description

The utility model discloses an thinking lies in:

by adopting a sludge high-temperature aerobic fermentation technology and the metabolism of aerobic microorganisms, organic matters in the sludge are converted into humus rich in plant nutrients, the final metabolites of the reaction are CO2, H2O and heat, a large amount of heat enables the materials to maintain a certain high temperature, the water content of the materials is reduced, pathogens, parasitic ova and weed seeds are effectively removed, and the purposes of reduction, stabilization, harmlessness and recycling of the sludge are achieved.

The structure and the working principle of the present invention are further explained by the following specific embodiments:

a sequencing batch aerobic fermentation treatment device 100 shown in fig. 1, which comprises a mixing device 110 for mixing different raw materials, wherein the sludge, auxiliary materials and returned materials enter quantitative

screw conveying devices

151, 152 and 153 through

outlets

121, 131 and 141 of a sludge bin 120, an auxiliary material bin 130 and a returned material bin 140 respectively, and enter the mixing device 110 through the conveying of the quantitative

screw conveying devices

151, 152 and 153, the mixed raw materials are conveyed into a plurality of SBF high-temperature aerobic fermentation chambers 170 from inlets 170a of the SBF high-temperature aerobic fermentation chambers through a feeding conveying device 160, a screw mechanism 171 capable of rotating forwards and backwards is arranged in each SBF high-temperature aerobic fermentation chamber 170, and an aeration device 172 for aeration treatment is arranged at the bottom of each SBF high-temperature aerobic fermentation chamber 170; the aeration device 172 is circumferentially arranged in the SBF high-temperature aerobic fermentation cabin 170, and the aeration device 172 aerates during aeration.

The fermented crude product after aerobic fermentation is sent into a drum screening machine 190 from an outlet 170b of the SBF high-temperature aerobic fermentation cabin through a discharge conveying device 180, the undersize material is a finished product, and the oversize material is conveyed back to the return bin 140 through a conveying device 200.

In order to more conveniently and fully treat the raw materials, the plane arrangement mode of the SBF high-temperature aerobic fermentation cabin 170 is double-row parallel arrangement, namely the plane arrangement mode is symmetrically arranged at two sides of the feeding conveying equipment 160 and the discharging conveying equipment 180, a feeding hole 170a and a discharging hole 170b of the SBF high-temperature aerobic fermentation cabin are both arranged at the front part of the fermentation cabin 170, and relative to the position of the fermentation cabin 170, the feeding hole 170a is arranged at the upper part, and the discharging hole 170b is arranged at the lower part.

And the screw mechanism 171 in the SBF high-temperature aerobic fermentation cabin 170 pushes the materials into the fermentation cabin 170 when rotating forwards continuously, loosens the materials in the cabin 170 when rotating backwards, and pushes the materials out of the fermentation cabin 170 when rotating backwards continuously.

In order to ensure the oxygen supply of the aeration device 172, an oxygen supply fan 200 is connected to each SBF thermophilic aerobic fermentation chamber 170 in the open sea for supplying oxygen for the aeration reaction.

Each SBF high-temperature aerobic fermentation cabin 170 is also commonly connected with a tail gas absorption device 210 for absorbing tail gas generated in the sludge fermentation process in the SBF high-temperature aerobic fermentation cabin 170.

The lower end 191 of the drum screening machine 190 is connected with a conveying hoister 220, a finished product warehouse 230, a packing machine 240 and a car loader 250 for conveying the undersize materials, and the undersize materials are further packaged after being finished products are obtained through the conveying hoister 220, the finished product warehouse 230, the packing machine 240 and the car loader 250 which are connected.

Because of possessing the above structure, the utility model discloses a main work step and principle lie in:

the treatment process of the utility model comprises the following steps:

a pretreatment step:

the dewatered sludge, the auxiliary materials and the return materials are respectively conveyed into the mixing equipment 110 according to the proportion for uniform mixing and stirring through quantitative

spiral conveying devices

151, 152 and 153 at the lower parts of

respective bins

120, 130 and 140;

aerobic fermentation:

the uniformly stirred raw materials are conveyed into a plurality of SBF high-temperature aerobic fermentation cabins 170 through a feeding conveying device 160, and the raw materials are subjected to aerobic fermentation through the forward rotation and reverse rotation of a screw mechanism 171 and the aeration action of an aeration device 172 in the state that the interior of the SBF high-temperature aerobic fermentation cabins 170 operates under micro negative pressure;

a tail gas absorption step:

the tail gas absorption device 210 sucks and collects tail gas generated in the sludge fermentation process in the SBF high-temperature aerobic fermentation cabin 170, and the purified gas is discharged into the atmosphere;

post-treatment:

the fermented materials are fed into a roller screening machine 190 through a feeding and conveying device 160 for screening, the screened materials are further packaged after being finished products are obtained through a conveying lifting machine 220, a product warehouse 230, a packaging machine 240 and a car loader 250 which are connected, and the screened materials are conveyed back to the material returning bin 140 through a pipeline 200.

Because of possessing the above conditions, the utility model has the advantages that:

the utility model takes the sewage plant dewatered sludge as the main raw material, adds straw, wood dust and the like as auxiliary materials, and takes part of the fermented materials as additives for aerobic fermentation, thereby meeting the resource utilization of wastes; the SBF high-temperature aerobic fermentation cabin rotates for aerobic fermentation, sludge is fully mixed and stirred in the fermentation cabin, and an aeration system at the bottom of the fermentation cabin provides oxygen required by aerobic microorganism growth and metabolism for sludge fermentation; the vapor and carbon dioxide evaporated in the fermentation process are purified by a tail gas absorption device and then discharged, and the storage and transportation of the fermented finished product are carried out in a closed space without secondary pollution.

Compared with the prior art, the utility model has small occupied area; the whole fermentation process is carried out in the closed tank body, no waste gas and dust pollution is caused, the fermentation is uniform and sufficient, the continuous operation can be realized, the working efficiency is high, and the like.

Claims

1. A sequencing batch sludge aerobic fermentation treatment device is characterized by comprising:

2. The sequencing batch aerobic fermentation treatment device for sludge as claimed in claim 1, wherein the plane layout of the SBF thermophilic aerobic fermentation cabins is arranged side by side in two rows.

3. The sequencing batch aerobic fermentation treatment device for sludge as claimed in claim 1, wherein the feeding port and the discharging port of the SBF high temperature aerobic fermentation chamber are both arranged at the front part of the fermentation chamber, and the feeding port is arranged at the upper part and the discharging port is arranged at the lower part.

4. The sequencing batch aerobic fermentation treatment device for sludge as claimed in claim 1, wherein the mixing device is connected with the sludge bin, the auxiliary bin and the material returning bin through a first quantitative screw conveyer to a third quantitative screw conveyer respectively.

5. The sequencing batch aerobic fermentation treatment device for sludge as claimed in claim 1, wherein the aeration device is located at the bottom of the SBF aerobic fermentation chamber and is connected with an external oxygen supply device.

6. The sequencing batch aerobic fermentation treatment device of sludge as claimed in claim 1, further comprising a tail gas absorption device connected to the SBF aerobic fermentation chamber for absorbing tail gas generated during the fermentation process of sludge in the SBF aerobic fermentation chamber.

7. The sequencing batch aerobic fermentation treatment device for sludge as claimed in claim 1, further comprising a screening material conveying device, a finished product warehouse, a packaging machine and a car loader connected with the lower end of the screening device, wherein the screened material is further packaged by the connected screening material conveying device, the finished product warehouse, the packaging machine and the car loader.