CN102503061B - Inorganic-organic composite conditioner for sludge composting - Google Patents
Inorganic-organic composite conditioner for sludge composting Download PDFInfo
- Publication number
- CN102503061B CN102503061B CN2011103295434A CN201110329543A CN102503061B CN 102503061 B CN102503061 B CN 102503061B CN 2011103295434 A CN2011103295434 A CN 2011103295434A CN 201110329543 A CN201110329543 A CN 201110329543A CN 102503061 B CN102503061 B CN 102503061B
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- Prior art keywords
- inorganic
- organic composite
- composite conditioner
- sludge
- porous ceramics
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- 238000009264 composting Methods 0.000 title claims abstract description 23
- 239000010802 sludge Substances 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002023 wood Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000010564 aerobic fermentation Methods 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000002361 compost Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 8
- 230000007306 turnover Effects 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000003750 conditioning effect Effects 0.000 description 4
- 210000003608 fece Anatomy 0.000 description 4
- 239000010871 livestock manure Substances 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241000186361 Actinobacteria <class> Species 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 241001478240 Coccus Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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 discloses an inorganic-organic composite conditioner for sludge composting. The inorganic-organic composite conditioner for sludge composting is prepared by mixing porous ceramic and saw dust in a certain ratio. The inorganic-organic composite conditioner is obtained by mixing dry porous ceramic particles with certain porosity and the saw dust with certain particle size and water content in a volume ratio and fully stirring. The inorganic-organic composite conditioner has certain mechanical strength, high porosity and thermal stability and a wide application prospect, can effectively improve a sludge stack structure, improves oxygen diffusion efficiency, is low in cost and high in practical value, can be repeatedly used, and is used for the high temperature aerobic fermentation treatment of sludge.
Description
Technical field
The present invention relates to a kind of composite conditioner, especially a kind of inorganic-organic composite conditioner for sludge composting.
Background technology
At present, put into operation 1992 of urban wastewater treatment firms of the whole nation, the amount of disposing of sewage 280 billion cubic meters year produce 2,005 ten thousand tons of the dewatered sludges of water ratio 80% left and right.Along with putting into operation successively in more than 2000 sewage work that builds, the whole nation year total generation of mud will be broken through 3,000 ten thousand tons very soon, this is the major part treatment and disposal of not stabilized, innoxious, resource utilization also wherein, there is no normal outlet, not only become the burden of city and sewage work, and any discharging of mud and stack and to cause new mud startling to surrounding enviroment, make the facility such as the municipal drainage of building up, lake, river and municipal sewage plant can not give full play to the function of eliminating environmental pollution.Both made and had the digester lignin-sludge, and without harmlessness disposing, though pollution level alleviates to some extent, still do not met the agricultural sludge standard and cause secondary pollution.
Current disposal municipal sludge has the methods such as burning, sanitary landfill and soil utilization, and wherein the soil utilization has become an important disposal approach.But must carry out stabilization and harmless treatment before the soil utilization.Stabilization and the harmless treatment of mud mainly contain: aerobic sigestion, anaerobic digestion, composting, double digestion, heat drying and alkaline stabilisation etc.Wherein composting (aerobic composting processing) is the most frequently used.Composting is exactly in fact to utilize aerobic microbiological (as bacillus, coccus and actinomycetes etc.) in mud to carry out the process of aerobic fermentation.
The compost amendment refers to add organism or the inorganics of doing in compost material, so as to the quality of minimizing unit volume and the contact area of increase and air, regulation and control moisture, be beneficial to aerobic fermentation, so amendment is generally used for the water ratio in the balance composting material and increases organism quantity in material.Desirable amendment is dry, more labile material, and water-retaining capacity is strong, can play a supporting role, and inexpensive.Amendment can be by one or more mixing of materials, and amendment commonly used has wood chip, stalk, rice husk, tree branches and leaves, Pericarppium arachidis hypogaeae, is broken into granular tire, rock etc.And the amendments such as traditional wood chip, stalk, rice husk because decomposition occurs self, lose water-retaining capacity in composting process, can not play a supporting role, and can only disposablely utilize, and can not recycle.And increasing along with mud handling capacity, the source of wood chip class amendment has become a great problem.
Summary of the invention
Purpose of the present invention is exactly for the deficiencies in the prior art, and a kind of inorganic-organic composite conditioner for sludge composting is provided.
The technical scheme that technical solution problem of the present invention is taked is:
A kind of inorganic-organic composite conditioner for sludge composting is mixed by setting volume ratio by porous ceramics particle, wood chip, and porous ceramics particle and wood chip volume ratio are 1:2～1:5.
Described porous ceramics porosity is 70～80%, and the porous ceramics particle is cylindrical shape, and length is 8～10mm, and the bottom surface diameter is 6～8mm.
Described wood chip water ratio is 30%～40%, and grain diameter is 50 orders～100 orders.
In porous ceramics particle of the present invention and wood chip mixing process, during mixing, churning time is 20～30min, and agitator speed is 10 rev/mins.
After the present invention's preparation is completed, and the mass percent of adding in mud is 15%～20%.
Beneficial effect of the present invention is:
1. because this Novel conditioning agent is inorganic porous ceramic and organic wood chip composite, porous ceramics used is cylindrical, and specific surface area is large, and porosity is high, biological attachment ability than single wood chip class amendment is stronger, and when the compost end is found in experiment, the amendment weightening finish is 4～6 times.Use this Novel conditioning agent to carry out compost, the material loosening that obtains, amendment is easy to separate with material, and the superior microorganism that adheres in surface micropore again can be with it as the feed back utilization.
2. because amendment loss in composting process is less, capable of circulation being repeatedly used, the loss of each compost is lower than 3%.And low price, take the price in area, Jinhua, Zhejiang Province city as example, only be equivalent to 50% left and right of 600 yuan/tons of wood chips.Therefore of the present invention with low cost, economic benefit is fairly obvious.
3. because porous ceramics material of the present invention has good supporting role, the micropore of self can make again the interior ventilation of heap body more unobstructed, experimental results show that, use this amendment can make traditional organic amendment usage quantity reduce more than 40%, can greatly save gas blower working time, thereby make the current consumption in the compost operational process be reduced to the current consumption 10kWh that processes mud per ton.
4. owing to having added the Novel conditioning agent in mud, compare with the technique that only adopts traditional single type amendments such as straw/wood sheet, compost temperature rise period heat-up rate in early stage is fast, and the heap body dehydration of compost later stage and cooling are rapidly.Therefore, the compost maturity required time is the shortest shortens to 20 days, and the compost cycle shortening 1/2～2/3 than domestic and international similar industrialization composting technology has improved composting efficiency greatly, also makes the automatic control of composting process simpler and easy simultaneously.
5. be conducive to the minimizing of compost the finished product, and improve the utilising efficiency of compost conversion unit.Evidence, add 15%～20% inorganic-organic hybrid amendment, can make the pure organic amendment of traditional wood chip/stalk use decrement over half, therefore in composting production, additive content reduces greatly, be consistent with the principle of sludge treatment minimizing, for follow-up mud soil utilizes resource utilization to create good condition.And the agent of this Novel conditioning is larger than traditional wood chip/stalk amendment density, and support structure is good, can make the composting production screening more simple and easy.
Embodiment
Embodiment 1
Select that the porous ceramics particle of porosity 72% and water ratio are 33%, particle diameter is 60 purpose wood chips, 1:3 mixes by volume, during mixing, churning time is 23min, agitator speed is 10 to turn/min, products obtained therefrom 15% is added in the dewatered sludge (water ratio is about 80%) of 10 tons in mass ratio, send into fermented manure after mixing, adopt turnover throwing machine to turn over throwing+forced ventilation high-temperature aerobic fermentation, compost maturity after 25 days.
Embodiment 2
Select that the porous ceramics particle of porosity 70% and water ratio are 40%, particle diameter is 80 purpose wood chips, 1:2 mixes by volume, during mixing, churning time is 20min, agitator speed is 10 to turn/min, products obtained therefrom 18% is added in the dewatered sludge (water ratio is about 80%) of 10 tons in mass ratio, sends into fermented manure after mixing, and adopts turnover throwing machine to turn over throwing+forced ventilation high-temperature aerobic fermentation, compost maturity after 20 days, porous ceramics continue to use after screening.
Embodiment 3
Selecting porous ceramics particle and the water ratio of porosity 78% is 30%, particle diameter is 50 purpose wood chips, 1:4 mixes by volume, during mixing, churning time is 28min, and agitator speed is 10 to turn/min, and products obtained therefrom 20% is added in the dewatered sludge (water ratio is about 80%) of 10 tons in mass ratio, send into fermented manure after mixing, adopt turnover throwing machine to turn over throwing+forced ventilation high-temperature aerobic fermentation, compost maturity after 23 days, porous ceramics continue to use after screening.
Embodiment 4
Selecting porous ceramics particle and the water ratio of porosity 80% is 38%, particle diameter is 100 purpose wood chips, 1:5 mixes by volume, during mixing, churning time is 30min, and agitator speed is 10 to turn/min, and products obtained therefrom 16% is added in the dewatered sludge (water ratio is about 80%) of 10 tons in mass ratio, send into fermented manure after mixing, adopt turnover throwing machine to turn over throwing+forced ventilation high-temperature aerobic fermentation, compost maturity after 22 days, porous ceramics continue to use after screening.
Claims (3)
1. an inorganic-organic composite conditioner for sludge composting, is characterized in that being mixed by setting volume ratio by porous ceramics particle, wood chip, and porous ceramics particle and wood chip volume ratio are 1:2～1:5;
Described porous ceramics porosity is 70～80%, and the porous ceramics particle is cylindrical shape, and length is 8～10mm, and the bottom surface diameter is 6～8mm;
Described wood chip water ratio is 30%～40%, and grain diameter is 50 orders～100 orders.
2. a kind of inorganic-organic composite conditioner for sludge composting according to claim 1, it is characterized in that: in porous ceramics particle and wood chip mixing process, during mixing, churning time is 20～30min, and agitator speed is 10 rev/mins.
3. a kind of inorganic-organic composite conditioner for sludge composting according to claim 1 is characterized in that: after described a kind of inorganic-organic composite conditioner for sludge composting preparation is completed, and the mass percent of adding in mud is 15%～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103295434A CN102503061B (en) | 2011-10-26 | 2011-10-26 | Inorganic-organic composite conditioner for sludge composting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103295434A CN102503061B (en) | 2011-10-26 | 2011-10-26 | Inorganic-organic composite conditioner for sludge composting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102503061A CN102503061A (en) | 2012-06-20 |
| CN102503061B true CN102503061B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103295434A Expired - Fee Related CN102503061B (en) | 2011-10-26 | 2011-10-26 | Inorganic-organic composite conditioner for sludge composting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045388B (en) * | 2013-03-11 | 2016-04-20 | 同济大学 | A kind of charcoal is as the application of external source amendment in sludge composting |
| CN108083862A (en) * | 2017-12-25 | 2018-05-29 | 河南师范大学 | A kind of compost method using recoverable version compost conditioner |
| CN109608275A (en) * | 2019-02-19 | 2019-04-12 | 华电电力科学研究院有限公司 | A kind of sludge aerobic fermentation process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1150140C (en) * | 2000-04-07 | 2004-05-19 | 中国科学院生态环境研究中心 | Static process for preparing compost in house by time-temp controlled ventilation and its equipment |
| CN100369868C (en) * | 2006-09-18 | 2008-02-20 | 广东省农业科学院土壤肥料研究所 | Refined fertilizer produced from sludge and producing method thereof |
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| CN102503061A (en) | 2012-06-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG ZHONGCHANG WATER INDUSTRY CO., LTD. Free format text: FORMER OWNER: ZHONGCHANG ENVIRONMENT PROTECTION GROUP CO., LTD. Effective date: 20141212 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141212 Address after: 102 room 138, Stadium Road, Xiacheng District, Zhejiang, Hangzhou, 310003 Patentee after: Zhejiang Zhongchang Water Company Limited Address before: Qingchun Road in Hangzhou city of Zhejiang Province under the 310003 No. 42 room 1401 Patentee before: Zhongchang Environmental Protection Group Co.,Ltd. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160413 Address after: No. 317 Huaxing century building Wantang Hangzhou city in Zhejiang province Xihu District 310000 3 floor Room 305 Patentee after: Zhejiang Libao Environmental Engineering Co., Ltd. Address before: 102 room 138, Stadium Road, Xiacheng District, Zhejiang, Hangzhou, 310003 Patentee before: Zhejiang Zhongchang Water Company Limited |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20181026 |
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| CF01 | Termination of patent right due to non-payment of annual fee |