CN211814058U - Sludge resource treatment device - Google Patents

Sludge resource treatment device Download PDF

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Publication number
CN211814058U
CN211814058U CN201922310442.7U CN201922310442U CN211814058U CN 211814058 U CN211814058 U CN 211814058U CN 201922310442 U CN201922310442 U CN 201922310442U CN 211814058 U CN211814058 U CN 211814058U
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China
Prior art keywords
outlet
slurrying
reaction device
filtrate
filter pressing
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CN201922310442.7U
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Chinese (zh)
Inventor
黄益平
李晓翔
王佳兵
杨万典
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China Construction Industrial and Energy Engineering Group Co Ltd
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China Construction Industrial and Energy Engineering Group Co Ltd
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Abstract

The utility model discloses a sludge recycling treatment device, which comprises a pre-slurrying reaction device, a first filter pressing device, a purification reaction device, a second filter pressing device, an airflow dryer, an aerobic fermentation device and a waste gas treatment device; the pre-slurrying reaction device is sequentially connected with the slurrying reaction device and the first filter pressing device; the first filter pressing device comprises a first filtrate outlet and a filter cake outlet, the first filtrate outlet is respectively connected with the pre-slurrying reaction device and the purifying reaction device, and the purifying reaction device is connected with the second filter pressing device; the filter cake outlet is sequentially connected with the airflow dryer, the aerobic fermentation device and the waste gas treatment device; the second filter pressing device comprises a second filtrate outlet and a residue outlet, and the second filtrate outlet is connected with the pre-slurrying reaction device. The utility model provides a high problem such as unable recovery of high value organic matter, heavy metal and the persistent organic pollutant content that processes such as traditional incineration, landfill arouse.

Description

Sludge resource treatment device
Technical Field
The utility model relates to a sludge treatment technical field, concretely relates to mud resourceful treatment device.
Background
With the rapid development of national economy in China, the pace of urbanization and small town construction is constantly accelerated, the public requirements on the environmental quality are increasingly improved, the environmental awareness is constantly enhanced, and environmental protection and treatment are inevitable requirements of national sustainable development.
A large number of sewage treatment plants are continuously built and put into use, and the amount of sludge (including sludge in drainage pipelines, pump stations and sewage treatment plants) is increased. The sludge of the sewage treatment plant, which is a byproduct of sewage treatment, contains a large amount of organic matters and nutrient elements, has high recycling value, but also contains a large amount of heavy metal substances, pathogens, virus microorganisms and the like, and can cause serious secondary pollution if not treated in time. At present, the main treatment method for municipal sludge at home and abroad is as follows: the traditional methods and measures for landfill, incineration, agriculture and the like are limited in application along with the prominent harmful surface (such as chalky pollution which generates strong carcinogenic effect by incineration, percolate problem for landfill due to the control problem of harmful bacteria in agriculture and the like); the municipal sludge can not be comprehensively, safely and economically efficiently recycled by anaerobic digestion of the sludge, aerobic fermentation of the sludge and the like. Therefore, the research and practice on the reduction, stabilization, harmlessness and reclamation of the sludge become more important and urgent.
Under the circumstances, it is necessary for the engineering technicians and construction units to know and master the current domestic and foreign sludge treatment and disposal technologies in time. If the sludge discharged by the sewage plant is not treated, the pollution is changed from dispersed pollution to concentrated pollution, and the pollution problem of the sludge is still not solved. Therefore, the problem of sludge disposal becomes urgent.
Disclosure of Invention
The purpose of the invention is as follows: the utility model aims to provide a sludge resource processing apparatus to prior art not enough, solved the unable recovery of high value organic matter, heavy metal and the high problem of persistent organic pollutant content that processes such as traditional incineration, landfill arouse.
The technical scheme is as follows: the utility model relates to a sludge recycling treatment device, which comprises a pre-slurrying reaction device, a first filter pressing device, a purification reaction device, a second filter pressing device, an airflow dryer, an aerobic fermentation device and a waste gas treatment device;
the pre-slurrying reaction device is sequentially connected with the slurrying reaction device and the first filter pressing device;
the first filter pressing device comprises a first filtrate outlet and a filter cake outlet, the first filtrate outlet is respectively connected with the pre-slurrying reaction device and the purifying reaction device, and the purifying reaction device is connected with the second filter pressing device; the filter cake outlet is sequentially connected with the airflow dryer, the aerobic fermentation device and the waste gas treatment device;
the second filter pressing device comprises a second filtrate outlet and a residue outlet, and the second filtrate outlet is connected with the pre-slurrying reaction device.
Preferably, a gas outlet is arranged on the slurry reaction device, and the gas outlet is connected with a waste gas treatment device.
Preferably, the second filtrate outlet is also connected to a filtrate storage tank.
The utility model discloses in, heavy metal ion that obtains in the first filtrating does not reach standard filtrating or the filtrating that the accumulational production contains excessive heavy metal salt satisfully need get into and carry out the heavy metal desorption process and purify the reaction promptly in purifying reaction unit.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses a sludge dewatering, it is dry, the dispersion, aerobic fermentation is handled step by step, moisture in the control mud stage by stage, the microorganism, coupling through "air flow drying + aerobic fermentation" is handled, can be under the condition of guaranteeing the higher content of mud organic matter, heavy metal matter in the effective desorption mud, kill most harmful pathogen, virus microorganism, and can reduce the gaseous production of irritability among the fermentation process, it causes environmental air pollution scheduling problem to have solved traditional sludge fermentation treatment, the mud utilization of resources quality has been promoted simultaneously, the quality of afforestation mud or woodland mud has been promoted, the macroscopic economic benefits has been increased.
(2) The utility model discloses be provided with the slurrying reaction unit in advance, realized "dual cycle" utilization of filtrating in the mud resourceful treatment process, saved the use of water resource by a wide margin, and not only improved the mobility through mixing with filtrating and be convenient for carry with the formation mud, the filtrating can dilute the bicarbonate basicity in the mud simultaneously, has reduced the use amount of molysite flocculating agent among the slurrying reaction unit.
(4) The utility model discloses a high-efficient desorption heavy metal material, the integration of process flow, production environment are succinct high-efficient, have realized that the effective value of mud "eat and dry and press to the greatest extent", and social effect is showing.
Drawings
FIG. 1 is a structural diagram of a sludge recycling apparatus according to an embodiment of the present invention.
The method comprises the following steps of 1-a pre-pulping reaction tank, 2-a pulping reaction tank, 3-a first box type membrane filter press, 4-a purification reaction tank, 5-a second box type membrane filter press, 6-an airflow dryer, 7-an aerobic fermentation tank, 8-a waste gas treatment device, 9-a filtrate storage tank, 21-a gas outlet, 31-a first filtrate outlet, 32-a filter cake outlet, 51-a second filtrate outlet and 52-a residue outlet.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the specific embodiments and the attached drawings, but the scope of the present invention is not limited to the embodiments.
Examples
A sludge recycling treatment device comprises a pre-pulping reaction tank 1, a pulping reaction tank 2, a first box type membrane filter press 3, a purification reaction tank 4, a second box type membrane filter press 5, an airflow dryer 6, an aerobic fermentation tank 7 and a waste gas treatment device 8;
the pre-slurrying reaction tank 1 is sequentially connected with a slurrying reaction tank 2 and a first box type diaphragm filter press 3;
the first box type membrane filter press 3 comprises a first filtrate outlet 31 and a filter cake outlet 32, the first filtrate outlet 31 is respectively connected with the pre-pulping reaction tank 1 and the pulping reaction tank 2, and the purification reaction tank 4 is connected with the second box type membrane filter press 5; the filter cake outlet 32 is connected with the airflow dryer 6, the aerobic fermentation tank 7 and the waste gas treatment device 8 in sequence;
the second box type membrane filter press 5 comprises a second filtrate outlet 51 and a residue outlet 52, wherein the second filtrate outlet 51 is connected with the pre-slurrying reaction tank 1, and the second filtrate outlet 51 is also connected with the filtrate storage tank 9.
The slurrying reaction tank 2 is provided with a gas outlet 21, and the gas outlet 21 is connected with the waste gas treatment device 8.
The using method of the embodiment comprises the following steps:
s1, stirring and mixing sludge, a first filtrate and a second filtrate in a pre-slurrying reaction tank 1 to form slurry, reacting the slurry with an oxidant and a flocculating agent (the main components are ferric chloride solution and hydrochloric acid solution) added in a slurrying reaction tank 2, dissolving simple substance heavy metal, heavy metal sulfide, heavy metal carbonate and the like in the slurry in liquid through salts generated by reaction with hydrochloric acid and ferric chloride, and dehydrating the reactant obtained by slurrying through a first box type diaphragm filter press 3 to obtain a first filtrate and a filter cake; waste gas generated in the slurrying reaction tank 2 is treated through a gas outlet 21 and a waste gas treatment device 8 and then is discharged after reaching the standard;
s2, detecting that the concentration of heavy metal ions in the first filtrate is high, reacting the first filtrate with a heavy metal trapping agent taking sodium hydrosulfide as a main component in a purification reaction tank 4, dehydrating the reactant through a second box type membrane filter press 5 to obtain a second filtrate and heavy metal sulfide residues, introducing the residues into a solid waste treatment process through a residue outlet 52, recycling part of the second filtrate to the pre-slurrying reaction tank 1, and recycling part of the second filtrate to a filtrate storage tank 9;
s3, conveying part of the filter cake to an airflow dryer 6, mixing the filter cake with furnace slag, drying the filter cake by high-speed airflow to obtain sludge with the water content of 48%, crushing the sludge to be below 300 meshes (48 mu m) and far below the requirement of the grain size (less than or equal to 10 mm) of the forest land mud, conveying the sludge with the water content of 48% to an aerobic fermentation tank 7 for fermentation after drying to obtain the forest land mud which meets the standard requirement and has the water content of less than or equal to 60%, organic matter of more than or equal to 180g/(Kg dry sludge), and treating odor generated by fermentation by a waste gas treatment device 8 to reach the standard and discharge.
The two-cycle utilization of filtrate is realized in the sludge resource treatment process, the use of water resources is greatly saved, and the sludge resource utilization quality is improved through the coupled treatment of 'airflow drying and aerobic fermentation', and the problems of environmental air pollution and the like caused by the traditional sludge fermentation treatment are solved.
As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. A sludge recycling treatment device is characterized by comprising a pre-pulping reaction device, a first filter-pressing device, a purification reaction device, a second filter-pressing device, an airflow dryer, an aerobic fermentation device and a waste gas treatment device;
the pre-slurrying reaction device is sequentially connected with the slurrying reaction device and the first filter pressing device;
the first filter pressing device comprises a first filtrate outlet and a filter cake outlet, the first filtrate outlet is respectively connected with the pre-slurrying reaction device and the purifying reaction device, and the purifying reaction device is connected with the second filter pressing device; the filter cake outlet is sequentially connected with the airflow dryer, the aerobic fermentation device and the waste gas treatment device;
the second filter pressing device comprises a second filtrate outlet and a residue outlet, and the second filtrate outlet is connected with the pre-slurrying reaction device.
2. The process apparatus according to claim 1, wherein the slurry reactor is provided with a gas outlet, and the gas outlet is connected with a waste gas treatment device.
3. A treatment plant according to claim 1 or 2, characterized in that the second filtrate outlet is also connected to a filtrate storage tank.
CN201922310442.7U 2019-12-20 2019-12-20 Sludge resource treatment device Active CN211814058U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922310442.7U CN211814058U (en) 2019-12-20 2019-12-20 Sludge resource treatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922310442.7U CN211814058U (en) 2019-12-20 2019-12-20 Sludge resource treatment device

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CN211814058U true CN211814058U (en) 2020-10-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113877935A (en) * 2021-09-30 2022-01-04 北京嘉博文生物科技有限公司 Garbage recycling system and garbage recycling method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113877935A (en) * 2021-09-30 2022-01-04 北京嘉博文生物科技有限公司 Garbage recycling system and garbage recycling method

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