CN211226863U - Sludge reduction treatment system - Google Patents
Sludge reduction treatment system Download PDFInfo
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- CN211226863U CN211226863U CN201921904564.2U CN201921904564U CN211226863U CN 211226863 U CN211226863 U CN 211226863U CN 201921904564 U CN201921904564 U CN 201921904564U CN 211226863 U CN211226863 U CN 211226863U
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Abstract
The utility model discloses a sludge decrement processing system. The sludge reduction treatment system comprises a size mixing system, a sludge filter-pressing device and a sludge drying system; the sludge filter pressing device comprises a sludge inlet, a sludge outlet and a wastewater outlet, wherein the sludge inlet is connected with the slurry mixing system, the sludge outlet is connected with the sludge drying system, and the wastewater outlet is communicated with the slurry mixing system. The utility model reduces the moisture content of the original sludge after the pretreatment of size mixing and filter pressing is carried out on the original sludge through the size mixing system and the sludge filter pressing device, and then the sludge completely in a half-dry state is dried through the sludge drying system, thereby effectively reducing the energy consumption; the filter-pressed pulp mixing wastewater can flow back to the pulp mixing system to be used as pulp mixing water, and the pulp mixing wastewater is treated by pulp mixing for many times until the pulp mixing wastewater meets the requirement of entering a sewage plant, so that the purpose of treating waste by waste is realized.
Description
Technical Field
The utility model relates to a pollutant processing technology field, concretely relates to sludge reduction processing system.
Background
At present, sludge treatment is mainly carried out by methods such as incineration, fermentation and pyrolysis, and the essence of the methods is that drying treatment is directly carried out on original sludge, so that the moisture content of the sludge is reduced, and the difficulty and the cost of the transportation and the treatment of the sludge are reduced. However, such processes are typically capital intensive, costly, and large footprint. In addition, if the sludge contains heavy metals or other toxic substances, other substances with higher toxicity (including dioxin, polycyclic aromatic hydrocarbon and the like) are generated in the treatment process, and serious secondary pollution is caused. Therefore, it is necessary to develop a new sludge treatment system that can eliminate secondary pollution as much as possible while achieving efficient reduction treatment of sludge.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point and provide a mud decrement processing system, this system simple structure, and can realize "treating waste with waste" when realizing the high-efficient decrement processing of mud.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a sludge reduction treatment system comprises a size mixing system, a sludge filter-pressing device and a sludge drying system; the sludge filter pressing device is provided with a sludge inlet, a sludge outlet and a wastewater outlet, the sludge inlet is connected with the slurry mixing system, the sludge outlet is connected with the sludge drying system, and the wastewater outlet is communicated with the slurry mixing system.
The method comprises the steps of conveying original sludge to a slurry mixing system, carrying out slurry mixing treatment, allowing the regulated and reduced wet sludge to enter a sludge filter pressing device from a sludge inlet for filter pressing treatment, separating to obtain slurry mixing wastewater and a mud cake, allowing the slurry mixing wastewater to flow back to the slurry mixing system from a wastewater outlet to serve as slurry mixing water, and allowing the mud cake to be discharged from a mud outlet and enter a drying system for drying treatment.
The utility model discloses a sludge decrement processing system includes size mixing system, sludge filter pressing device and sludge drying system, carries out size mixing-filter pressing's preliminary treatment to the original sludge through size mixing system and sludge filter pressing device respectively after, reduces the mud moisture content, carries out the mummification through the sludge drying system with the mud that is in the half dry state completely afterwards, can obvious reduction energy consumption like this; the filter-pressed pulp mixing wastewater can flow back to the pulp mixing system to be used as pulp mixing water, and the pulp mixing wastewater is treated by pulp mixing for many times until the pulp mixing wastewater meets the requirement of entering a sewage plant, so that the purpose of treating waste by waste is realized.
Preferably, a size mixing wastewater pool A and a size mixing wastewater pool B are further arranged between the wastewater discharge port and the size mixing system, the size mixing wastewater pool A is provided with a wastewater inlet, a wastewater outlet and a wastewater backflow port, the wastewater inlet is communicated with the wastewater discharge port of the sludge filter pressing device, the wastewater outlet is communicated with a sewage plant, the wastewater backflow port is communicated with the size mixing wastewater pool B, and the size mixing wastewater pool B is communicated with the size mixing system. The size mixing wastewater obtained after filter pressing enters a size mixing wastewater pool A, the water quality of the wastewater is measured, if the water quality of the size mixing wastewater does not reach a set index, the size mixing wastewater flows back to a size mixing wastewater pool B for storing size mixing water, and the size mixing wastewater enters a size mixing system for size mixing treatment again; if the water quality of the size mixing wastewater reaches the set index, discharging the size mixing wastewater to a sewage plant for treatment.
Preferably, the sludge reduction treatment system further comprises a sludge tank for storing the original sludge, and the sludge tank is connected with the size mixing system.
Preferably, a sludge conveying device is arranged between the sludge tank and the slurry mixing system and is used for conveying the original sludge to the slurry mixing system.
Preferably, a sludge conveying device is arranged between the sludge filter-pressing device and the sludge drying system, and the filter-pressed sludge cake is conveyed to the sludge drying system.
Preferably, the sludge reduction treatment system further comprises a dry sludge tank for storing the sludge after drying treatment, and the dry sludge tank is connected with the sludge drying system.
Preferably, the sludge filter pressing device is a plate-and-frame filter press.
The method for sludge reduction treatment by adopting the system comprises the following steps:
(1) conveying original sludge with the water content of 75-85% to a size mixing system for size mixing treatment to obtain wet sludge with the water content of 90-95%;
(2) conveying the wet sludge to a sludge filter pressing device, dehydrating and pressing the wet sludge into mud cakes, separating the mud cakes to obtain size mixing wastewater and mud cakes with the water content of 55-65%, and if the water quality of the size mixing wastewater does not meet the requirement of entering a sewage plant, refluxing the size mixing wastewater to a size mixing system for size mixing treatment again; if the water quality of the size mixing wastewater meets the requirement of entering a sewage plant, discharging the size mixing wastewater to the sewage plant for treatment;
(3) the sludge cake enters a sludge drying system for drying treatment, the drying temperature is 130-140 ℃, the drying time is 5-6h, and the dry sludge with the water content of 18-22% is obtained. Under the condition, the drying effect is optimal.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a sludge decrement processing system includes size mixing system, sludge filter pressing device and sludge drying system, carries out size mixing-filter pressing's preliminary treatment to the original sludge through size mixing system and sludge filter pressing device respectively after, reduces the mud moisture content, carries out the mummification through the sludge drying system with the mud that is in the half dry state completely afterwards, can obvious reduction energy consumption like this; the filter-pressed wastewater can flow back to the slurry mixing system, and the wastewater can be treated by mixing slurry for a plurality of times until the wastewater meets the requirement of entering a sewage plant, so that the purpose of treating the wastewater with waste is realized.
Drawings
FIG. 1 is a schematic view of a sludge reduction treatment system according to the present invention.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific embodiments. It will be understood by those skilled in the art that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the examples, the experimental methods used were all conventional methods unless otherwise specified, and the materials, reagents and the like used were commercially available without otherwise specified.
A sludge reduction treatment system is shown in figure 1 and comprises a size mixing system, a sludge filter-pressing device and a sludge drying system; the sludge filter pressing device is provided with a sludge inlet, a sludge outlet and a wastewater outlet, the sludge inlet is connected with the slurry mixing system, the sludge outlet is connected with the sludge drying system, and the wastewater outlet is communicated with the slurry mixing system.
The method comprises the steps of conveying original sludge to a slurry mixing system, carrying out slurry mixing treatment, allowing the regulated and reduced wet sludge to enter a sludge filter pressing device from a sludge inlet for filter pressing treatment, separating to obtain slurry mixing wastewater and a mud cake, allowing the slurry mixing wastewater to flow back to the slurry mixing system from a wastewater outlet to serve as slurry mixing water, and allowing the mud cake to be discharged from a mud outlet and enter a drying system for drying treatment.
The utility model discloses a sludge decrement processing system includes size mixing system, sludge filter pressing device and sludge drying system, carries out size mixing-filter pressing's preliminary treatment to the original sludge through size mixing system and sludge filter pressing device respectively after, reduces the mud moisture content, carries out the mummification through the sludge drying system with the mud that is in the half dry state completely afterwards, can obvious reduction energy consumption like this; the filter-pressed pulp mixing wastewater can flow back to the pulp mixing system to be used as pulp mixing water, and the pulp mixing wastewater is treated by pulp mixing for many times until the pulp mixing wastewater meets the requirement of entering a sewage plant, so that the purpose of treating waste by waste is realized.
The utility model discloses in, still be equipped with size mixing wastewater disposal basin A and size mixing wastewater disposal basin B between waste water discharge port and the size mixing system, size mixing wastewater disposal basin A is equipped with waste water import, waste water export and wastewater backflow mouth, waste water import and sludge filter pressing device's waste water discharge port intercommunication, waste water export and sewage plant intercommunication, wastewater backflow mouth and size mixing wastewater disposal basin B intercommunication, size mixing wastewater disposal basin B and size mixing system intercommunication. The size mixing wastewater obtained after filter pressing enters a size mixing wastewater pool A, the water quality of the wastewater is measured, if the water quality of the size mixing wastewater does not reach a set index, the size mixing wastewater flows back to a size mixing wastewater pool B for storing size mixing water, and the size mixing wastewater enters a size mixing system for size mixing treatment again; if the water quality of the size mixing wastewater reaches the set index, discharging the size mixing wastewater to a sewage plant for treatment.
The utility model discloses in, sludge decrement processing system is still including the sludge impoundment that is used for depositing original mud, sludge impoundment and the system connection that adjusts thick liquid.
The utility model discloses in, be equipped with mud conveyor between sludge impoundment and the system of sizing mixing, like sludge pump etc. carry original mud to the system of sizing mixing.
The utility model discloses in, be equipped with sludge conveyor between sludge press filtration device and the sludge drying system, like sludge conveyor etc. carry the mud cake after the filter-pressing to the sludge drying system and carry out the mummification and handle.
The utility model discloses in, sludge decrement processing system is still including the dry mud pond that is used for depositing the mud after the mummification is handled, and sludge drying system is connected to the dry mud pond.
The utility model discloses in, sludge press filtration device is the filter press.
The utility model discloses a sludge decrement processing system's working process does:
(1) conveying original sludge with the water content of 75-85% to a size mixing system for size mixing treatment to obtain wet sludge with the water content of 90-95%;
(2) conveying the wet sludge to a sludge filter pressing device, dehydrating and pressing the wet sludge into mud cakes, separating the mud cakes to obtain wastewater and mud cakes with the water content of 55-65%, and if the water quality of the wastewater does not meet the requirement of entering a sewage plant, refluxing the wastewater to a slurry mixing system for mixing slurry again; if the water quality of the wastewater meets the requirement of entering a sewage plant, discharging the wastewater to the sewage plant for treatment;
(3) the sludge cake enters a sludge drying system for drying treatment, the drying temperature is 130-140 ℃, the drying time is 5-6h, and sludge with the water content of 18-22% is obtained.
The utility model discloses a sludge decrement processing system does not directly carry out the mummification to original sludge and handles, but relies on sewage treatment system (the sewage treatment system of sewage plant promptly), cooperates simple filter-pressing technology, with the liquid or semi-liquid mud of high moisture content, the effectual solid-state mud that turns into low moisture content to reach the purpose of low-cost, efficient sludge decrement processing. The utility model discloses need not to sludge high temperature treatment, effectively avoid secondary pollutants such as dioxin, polycyclic aromatic hydrocarbon to produce.
Example 1
The method for sludge reduction treatment by adopting the system of the utility model comprises the following steps:
(1) conveying m tons of original sludge with the water content of 80% to a pulp mixing system for pulp mixing treatment to obtain wet sludge with the water content of 90%;
(2) the wet sludge is conveyed to a plate-and-frame filter press, dewatered and pressed into mud cakes, m tons of size mixing wastewater and the mud cakes with the water content of 60 percent are obtained through separation, and the water quality indexes of the m tons of size mixing wastewater are shown in the table 1:
TABLE 1
| COD(mg/L) | BOD5(mg/L) | NH4-N(mg/L) | SS(mg/L) |
| 400 | 100 | 100 | 200 |
The water inlet standard of the actual sewage plant is shown in the table 2:
TABLE 2
| COD(mg/L) | BOD5(mg/L) | NH4-N(mg/L) | SS(mg/L) |
| 300 | 80 | 70 | 120 |
Obviously, the water quality of the size mixing wastewater obviously does not meet the water inlet requirement of a sewage plant. Therefore, it was returned to the slurrying system and mixed with the same mass of sludge for slurrying to obtain 2m tons by mass of wet sludge having a water content of 90%, followed by pressure filtration to obtain 0.5m tons by mass of dry sludge having a water content of 60% and 1.5m tons by mass of post-slurried wastewater, which was 1.5m of the slurried wastewater and had the water qualities shown in Table 3.
TABLE 3
| COD(mg/L) | BOD5(mg/L) | NH4-N(mg/L) | SS(mg/L) |
| 280 | 75 | 80 | 140 |
It can be seen that the water quality still does not meet the water inlet requirement of the sewage plant. Therefore, the slurry is recycled and the slurry mixing treatment is carried out again. In practice, the sludge was mixed with m tons of semidried sludge having a water content of 80% to obtain 2.5m of wet sludge having a water content of 92%, and the sludge was subjected to pressure filtration to obtain 0.5m of dry sludge having a water content of 60% and 2m tons of secondary pulp wastewater, wherein the water qualities thereof are shown in Table 4.
TABLE 4
| COD(mg/L) | BOD5(mg/L) | NH4-N(mg/L) | SS(mg/L) |
| 210 | 55 | 65 | 110 |
Obviously, the secondary size mixing wastewater basically meets the water inlet requirement of a sewage plant and can be directly discharged into the sewage plant for advanced treatment. It should be noted that, in the original slurry mixing wastewater, the concentration of pollutants may be higher, and if the wastewater after the secondary slurry mixing still does not meet the water inlet requirement, the slurry mixing-filter pressing treatment needs to be continued or even carried out for multiple times until the water inlet requirement is completely met, so as to realize the treatment of waste by waste.
(3) The dry sludge directly enters a sludge drying system for drying treatment, the drying time is 5-6h, the drying temperature is 130-140 ℃, after the drying is finished, 0.25m ton of dry sludge with the water content of 20% is obtained, the mass of the dry sludge is only 1/4 of the original sludge, and the reduction effect is obvious.
The utility model discloses a sludge decrement processing system includes size mixing system, sludge filter pressing device and sludge drying system, carries out size mixing-filter pressing's preliminary treatment to the original sludge through size mixing system and sludge filter pressing device respectively after, reduces the mud moisture content, carries out the drying treatment through the sludge drying system with the sludge that is in the half dry state completely afterwards, can obviously reduce the energy consumption like this; the filter-pressed slurry mixing wastewater can flow back to the slurry mixing system, and can be treated by multiple slurry mixing treatments until the wastewater meets the requirement of entering a sewage plant, so that the wastewater is treated while the sludge is reduced, and the purpose of treating waste by waste is realized.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A sludge reduction treatment system is characterized by comprising a size mixing system, a sludge filter-pressing device and a sludge drying system; the sludge filter pressing device is provided with a sludge inlet, a sludge outlet and a wastewater outlet, the sludge inlet is connected with the slurry mixing system, the sludge outlet is connected with the sludge drying system, and the wastewater outlet is communicated with the slurry mixing system.
2. The sludge reduction treatment system according to claim 1, wherein a size mixing wastewater tank A and a size mixing wastewater tank B are further arranged between the wastewater discharge port and the size mixing system, the size mixing wastewater tank A is provided with a wastewater inlet, a wastewater outlet and a wastewater return port, the wastewater inlet is communicated with the wastewater discharge port of the sludge filter press device, the wastewater outlet is communicated with a sewage plant, the wastewater return port is communicated with the size mixing wastewater tank B, and the size mixing wastewater tank B is communicated with the size mixing system.
3. The sludge reduction treatment system according to claim 1, further comprising a sludge tank for storing raw sludge, wherein the sludge tank is connected to the sludge conditioning system.
4. The system for sludge reduction treatment according to claim 3, wherein a sludge transfer device is provided between the sludge tank and the sludge conditioning system.
5. The sludge reduction treatment system according to claim 1, wherein a sludge conveying device is arranged between the sludge filter pressing device and the sludge drying system.
6. The sludge reduction treatment system according to claim 1, further comprising a dry sludge tank for storing the sludge after drying treatment, wherein the dry sludge tank is connected with the sludge drying system.
7. The sludge reduction treatment system according to any one of claims 1 to 6, wherein the sludge press filtration device is a plate and frame filter press.
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| CN110803849A (en) * | 2019-11-06 | 2020-02-18 | 广东益诺欧环保股份有限公司 | Sludge reduction treatment system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110803849A (en) * | 2019-11-06 | 2020-02-18 | 广东益诺欧环保股份有限公司 | Sludge reduction treatment system and method |
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Effective date of registration: 20230606 Address after: Room 606, No. 69, Xincheng Middle Road, Jiekou Street, Conghua District, Guangzhou, Guangdong 510999 Patentee after: Guangdong Shangchen Environmental Technology Co.,Ltd. Address before: 510000 room 363, building 4, No. 3, middle Qianjin Road, Aotou Town, Conghua, Guangzhou, Guangdong Patentee before: GUANGDONG YEANOVO ENVIRONMENTAL PROTECTION Co.,Ltd. |