CN114315068A - Efficient recycling method for deposited sludge - Google Patents
Efficient recycling method for deposited sludge Download PDFInfo
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- CN114315068A CN114315068A CN202111586309.XA CN202111586309A CN114315068A CN 114315068 A CN114315068 A CN 114315068A CN 202111586309 A CN202111586309 A CN 202111586309A CN 114315068 A CN114315068 A CN 114315068A
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- Prior art keywords
- sludge
- composting
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- sewage
- organic matters
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- 239000010802 sludge Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004064 recycling Methods 0.000 title claims description 13
- 238000009264 composting Methods 0.000 claims abstract description 32
- 239000010865 sewage Substances 0.000 claims abstract description 18
- 238000005192 partition Methods 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 241000233866 Fungi Species 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 7
- 241000894006 Bacteria Species 0.000 claims abstract description 6
- 241000700605 Viruses Species 0.000 claims abstract description 6
- 239000003337 fertilizer Substances 0.000 claims abstract description 6
- 230000003071 parasitic effect Effects 0.000 claims abstract description 5
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000009423 ventilation Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000002361 compost Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 239000008394 flocculating agent Substances 0.000 claims description 6
- 235000015097 nutrients Nutrition 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 4
- 241000282414 Homo sapiens Species 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 239000011574 phosphorus Substances 0.000 abstract description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 2
- 244000045947 parasite Species 0.000 abstract description 2
- 229910052700 potassium Inorganic materials 0.000 abstract description 2
- 239000011591 potassium Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to the field of sludge recovery, in particular to a high-efficiency recovery and utilization method of deposited sludge, which comprises the following steps of firstly, stacking the sludge in a composting pool, wherein a partition plate is arranged in the composting pool, sewage in the sludge falls to the bottom of the composting pool through the partition plate, composting solid sludge is carried out, and the composting is divided into two stages; stage one: the initial composting stage is a heating process and needs to be carried out under a forced ventilation condition, organic matters in the sludge begin to decompose, and fungi rapidly grow; high-temperature self-disinfection process: the energy released by the decomposition of organic substances is inhibited, and bacteria, parasitic ova and viruses are killed. The invention is realized by sludge composting, the composting decomposes organic matters in the sludge, eliminates bacteria, parasites, viruses and the like in the sludge, increases the fertilizer efficiency of nitrogen, phosphorus, potassium and the like, is easy to be absorbed and left by crops, is convenient to eliminate harmful substances to plants and human beings, improves the fertilizer content of the sludge, and is convenient to recycle.
Description
Technical Field
The invention relates to the technical field of sludge recovery, in particular to a high-efficiency recovery and utilization method of deposited sludge.
Background
The sludge contains a large amount of organic matters and rich nutrient substances such as nitrogen, phosphorus and the like, and the arbitrary discharge into the water body can consume a large amount of oxygen in the water body, so that the water quality of the water body is deteriorated, and the survival of aquatic organisms is seriously influenced. Besides, the sludge contains various toxic substances, heavy metals, pathogenic bacteria, parasitic ova and other harmful substances, the treatment can spread diseases and pollute soil and crops improperly, and the harmful substances are transferred to human beings through biological chains; the traditional sludge recycling method only recycles the piled sludge, the sewage in the piled sludge contains more nutrient components, and most of the nutrient components are discarded after harmless treatment, so that the resource waste is caused.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a method for efficiently recycling deposited sludge.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-efficiency recycling method of deposited sludge comprises the steps that firstly, the sludge is stacked in a composting pool, a partition plate is arranged in the composting pool, sewage in the sludge falls to the bottom of the composting pool through the partition plate, solid sludge is composted, and composting is divided into two stages;
stage one: the initial composting stage is a heating process and needs to be carried out under a forced ventilation condition, organic matters in the sludge begin to decompose, and fungi rapidly grow;
high-temperature self-disinfection process: the energy released by the decomposition of the organic matters is utilized, at the moment, the fungus is inhibited, the bacteria, parasitic ova and viruses are killed, and as most of the organic matters are oxidized and decomposed, the oxygen demand is rapidly reduced, and the temperature begins to fall back;
and (3) a decomposing process: the temperature is reduced, and the composting is basically finished;
and a second stage: and (4) a natural stacking mode, wherein the sludge of the compost is further cured, dried and granulated.
The sludge after composting can be directly used after being crushed or added with other nutrient substances for granulation to be used as fertilizer.
Preferably, the second step includes adding a certain proportion of flocculant into the collected sewage, stirring the sewage by using equipment, and fully mixing the flocculant;
step three: the mud reacts with the flocculating agent to form flocs, and then the flocs uniformly enter a filter layer of the filter bed through an inlet pipeline, a large amount of free water is filtered by the filter plate under the action of gravity, the sludge flocs are retained on the filter plate layer, and the sludge flocs are continuously superposed and thickened on the filter plate along with the continuous filtering of the free water;
step four, the concentrated sludge is subjected to wall breaking under the action of sunlight, wind and the like to enable cells of the concentrated sludge to generate wall breaking, one part of water in the floccule is evaporated, the other part of water is filtered through filter plate holes, and after the mud layer is further dehydrated to form a cracked dry mud cake after being aired and ventilated for a plurality of days, so that the sludge is dried (the water content of the mud cake can be controlled according to the time);
step five: and crushing the dried sludge, granulating and recycling.
Preferably, step six: the separated water hit and collected is disinfected and sterilized for reuse.
The invention has the beneficial effects that:
1. the method is realized by sludge composting, the composting decomposes organic matters in the sludge, eliminates bacteria, parasites, viruses and the like in the sludge, increases the fertilizer efficiency of nitrogen, phosphorus, potassium and the like, is easy to be absorbed and left by crops, is convenient to eliminate harmful substances to plants and human beings, improves the fertilizer content of the sludge, and is convenient to recycle;
2. solid-liquid separation is carried out on sewage through a flocculating agent, sludge is separated and dried and subjected to micro composting in a filter bed, sterilization is carried out under the action of sunlight, and the separated sewage is sterilized and disinfected and then is recycled together with the sludge, so that the sewage is convenient to recycle and treat, and the utilization rate is improved.
Drawings
FIG. 1 is a schematic view of a flow structure of a method for efficiently recycling sedimentary sludge according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1: a high-efficiency recycling method of deposited sludge comprises the steps that firstly, the sludge is stacked in a composting pool, a partition plate is arranged in the composting pool, sewage in the sludge falls to the bottom of the composting pool through the partition plate, solid sludge is composted, and composting is divided into two stages;
stage one: the initial composting stage is a heating process and needs to be carried out under a forced ventilation condition, organic matters in the sludge begin to decompose, fungi rapidly grow, and the temperature of the composting rises to about 45-55 ℃;
high-temperature self-disinfection process: energy released by the decomposition of organic matters is partially synthesized into new cells, the temperature of partial compost is continuously raised to 55-70 ℃, at the moment, fungi are inhibited, bacteria, parasitic ova and viruses are killed, and as most of the organic matters are oxidized and decomposed, the oxygen demand is rapidly reduced, and the temperature begins to fall back;
and (3) a decomposing process: the temperature is reduced to about 40 ℃, and composting is basically finished;
and a second stage: natural stacking, further maturation, drying and granulation of the composted sludge as shown in figure 1,
example 2:
1. referring to fig. 1-for illustration, the second step includes adding a certain proportion of flocculant into the collected sewage, stirring the sewage with equipment, and mixing the flocculant fully;
step three: the mud reacts with the flocculating agent to form flocs, and then the flocs uniformly enter a filter layer of the filter bed through an inlet pipeline, a large amount of free water is filtered by the filter plate under the action of gravity, the sludge flocs are retained on the filter plate layer, and the sludge flocs are continuously superposed and thickened on the filter plate along with the continuous filtering of the free water;
step four, the concentrated sludge is subjected to wall breaking under the action of sunlight, wind and the like to enable cells of the concentrated sludge to generate wall breaking, one part of water in the floccule is evaporated, the other part of water is filtered through filter plate holes, and after the mud layer is further dehydrated to form a cracked dry mud cake after being aired and ventilated for a plurality of days, so that the sludge is dried (the water content of the mud cake can be controlled according to the time);
step five: crushing and granulating the dried sludge for reuse, and carrying out the sixth step: the separated water hit and collected is disinfected and sterilized for reuse.
The working principle is as follows: during the use, collect the mud in pond or the river course and carry out the compost processing in the compost pond, sewage and the mud separation in the mud, mud carries out the compost in the compost pond, after two stages, the mud of compost just can recycle through handling, add the flocculating agent after the sewage is collected, mix and the flocculating agent is flocculate to the impurity in the sewage, carry out mud and water separation after sewage gets into the filter bed, the remaining moisture of evaporation under sunshine and the natural wind effect is again gone out to the mud that separates, dry into the pie, realize recycling after the collection processing, the water of separation department on the filter bed, recycle after disinfection and sterilization processing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (3)
1. A high-efficiency recycling method of deposited sludge comprises a first step and is characterized in that the sludge is stacked in a composting pool, a partition plate is arranged in the composting pool, sewage in the sludge falls to the bottom of the composting pool through the partition plate, solid sludge is composted, and composting is divided into two stages;
stage one: the initial composting stage is a heating process and needs to be carried out under a forced ventilation condition, organic matters in the sludge begin to decompose, and fungi rapidly grow;
high-temperature self-disinfection process: the energy released by the decomposition of the organic matters is utilized, at the moment, the fungus is inhibited, the bacteria, parasitic ova and viruses are killed, and as most of the organic matters are oxidized and decomposed, the oxygen demand is rapidly reduced, and the temperature begins to fall back;
and (3) a decomposing process: the temperature is reduced, and the composting is basically finished;
and a second stage: and (4) a natural stacking mode, wherein the sludge of the compost is further cured, dried and granulated. The sludge after composting can be directly used after being crushed or added with other nutrient substances for granulation to be used as fertilizer.
2. The method for efficiently recycling the settled sludge according to claim 1, wherein the second step comprises adding a certain proportion of flocculant into the sewage collected in a centralized manner, and stirring the sewage by using equipment to fully mix the flocculant;
step three: the mud reacts with the flocculating agent to form flocs, and then the flocs uniformly enter a filter layer of the filter bed through an inlet pipeline, a large amount of free water is filtered by the filter plate under the action of gravity, the sludge flocs are retained on the filter plate layer, and the sludge flocs are continuously superposed and thickened on the filter plate along with the continuous filtering of the free water;
step four, the concentrated sludge is subjected to wall breaking under the action of sunlight, wind and the like to enable cells of the concentrated sludge to generate wall breaking, one part of water in the floccule is evaporated, the other part of water is filtered through filter plate holes, and after the mud layer is further dehydrated to form a cracked dry mud cake after being aired and ventilated for a plurality of days, so that the sludge is dried (the water content of the mud cake can be controlled according to the time);
step five: and crushing the dried sludge, granulating and recycling.
3. The method for efficiently recycling sedimentary sludge according to claim 2, characterized by comprising the following steps: the separated water hit and collected is disinfected and sterilized for reuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111586309.XA CN114315068A (en) | 2021-12-23 | 2021-12-23 | Efficient recycling method for deposited sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111586309.XA CN114315068A (en) | 2021-12-23 | 2021-12-23 | Efficient recycling method for deposited sludge |
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| Publication Number | Publication Date |
|---|---|
| CN114315068A true CN114315068A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111586309.XA Pending CN114315068A (en) | 2021-12-23 | 2021-12-23 | Efficient recycling method for deposited sludge |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116675331A (en) * | 2023-05-26 | 2023-09-01 | 温州富邦环境工程有限公司 | Sewage treatment equipment |
| CN117548477A (en) * | 2024-01-12 | 2024-02-13 | 自然资源部第二海洋研究所 | A method for remediation of heavy metal pollution in sediments |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745866A (en) * | 2012-07-19 | 2012-10-24 | 北京世纪国瑞环境工程技术有限公司 | Non-hazardous recycling treatment method for excrement |
| CN205347150U (en) * | 2016-01-25 | 2016-06-29 | 河北农业大学 | Integrated sewage and garbage treatment device for cold regions |
| CN207294544U (en) * | 2017-08-25 | 2018-05-01 | 上海立源水处理技术有限责任公司 | A kind of rural domestic sewage treating device |
| CN109502817A (en) * | 2018-12-14 | 2019-03-22 | 湖南极合技术咨询有限公司 | A kind of compost sewage environmental protection recovery system |
-
2021
- 2021-12-23 CN CN202111586309.XA patent/CN114315068A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745866A (en) * | 2012-07-19 | 2012-10-24 | 北京世纪国瑞环境工程技术有限公司 | Non-hazardous recycling treatment method for excrement |
| CN205347150U (en) * | 2016-01-25 | 2016-06-29 | 河北农业大学 | Integrated sewage and garbage treatment device for cold regions |
| CN207294544U (en) * | 2017-08-25 | 2018-05-01 | 上海立源水处理技术有限责任公司 | A kind of rural domestic sewage treating device |
| CN109502817A (en) * | 2018-12-14 | 2019-03-22 | 湖南极合技术咨询有限公司 | A kind of compost sewage environmental protection recovery system |
Non-Patent Citations (1)
| Title |
|---|
| 黄秀梨: "《微生物学》", 高等教育出版社, pages: 214 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116675331A (en) * | 2023-05-26 | 2023-09-01 | 温州富邦环境工程有限公司 | Sewage treatment equipment |
| CN116675331B (en) * | 2023-05-26 | 2023-11-17 | 温州富邦环境工程有限公司 | Sewage treatment equipment |
| CN117548477A (en) * | 2024-01-12 | 2024-02-13 | 自然资源部第二海洋研究所 | A method for remediation of heavy metal pollution in sediments |
| CN117548477B (en) * | 2024-01-12 | 2024-04-09 | 自然资源部第二海洋研究所 | Sediment heavy metal pollution restoration method |
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Application publication date: 20220412 |