CN102491608B - Production method of sludge biomass environment-friendly fuel - Google Patents

Production method of sludge biomass environment-friendly fuel Download PDF

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Publication number
CN102491608B
CN102491608B CN 201110388048 CN201110388048A CN102491608B CN 102491608 B CN102491608 B CN 102491608B CN 201110388048 CN201110388048 CN 201110388048 CN 201110388048 A CN201110388048 A CN 201110388048A CN 102491608 B CN102491608 B CN 102491608B
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China
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sludge
mud
production
friendly fuel
biomass
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CN 201110388048
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Chinese (zh)
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CN102491608A (en
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曾秀仪
林计盛
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曾秀仪
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses a production method of a sludge biomass environment-friendly fuel. The method comprises the following steps: 1) sludge pretreatment: conveying sludge to a pretreatment pool, adding deodorant and bactericide and stirring uniformly; 2) sludge modification: conveying pretreated sludge to a reaction tank, adding modifier, sulfur fixing agent and heavy metal stabilizing agent, reacting uniformly and adding crushed biomass; 3) sludge depth dehydration: carrying out depth dehydration on the modified sludge; and 4) sludge drying: fragmenting the sludge cake treated with depth dehydration and drying. Compared with a prior art, the production method of sludge biomass environment-friendly fuel provided by the invention can realize quantitative reduction, harmlessness, stabilization and resource of sludge treatment, effectively solve a problem of secondary pollution of sludge and obtain the biomass environment-friendly fuel; besides, the fuel can substitute coal for combustion in boiler, make up sludge treatment cost as well as effectively solve a social problem of energy shortage.

Description

A kind of production method of sewage sludge biomass environment-friendly fuel

Technical field

The present invention relates to field of sludge treatment, exactly refer to a kind of production method of sewage sludge biomass environment-friendly fuel.

Background technology

By in by the end of June, 2010, whole nation accumulative total is built up 2389 of urban wastewater treatment firms, and sewage treatment capacity reached for 1.15 billion cubic meter/days.At present, national town sewage processing project of building reaches 1929, about 4900 ten thousand stere/days of general design ability.Be accompanied by the urbanization process of China and continuing to increase of environment protection dynamics, sewage work can rapid growth within the quite a long time.Along with the quick raising of wastewater treatment in China ability, sludge quantity also significantly increases synchronously, and by the end of the year 2010, the wet year generation of mud (water ratio 80%) of national urban wastewater treatment firm is broken through 3,200 ten thousand tons.Contain the hazardous and noxious substances such as a large amount of pathogenic agent, heavy metal substance in the mud, the mud that does not obtain safety, environmental protection treatment disposal is larger to the harm of environment, also produces easily secondary pollution.The environment sludge problem that mud produces becomes increasingly conspicuous, and has caused great potential safety hazard, environmental stress and economical load.

At present, the processing of mud is mainly towards the development of three aspects: the one, and stabilization by means such as compost, digestion, makes no longer further degraded behind the sludge disposal, avoids secondary pollution; The 2nd, innoxious, remove pathogenic agent, curing, stabilizing heavy metal ensure ecological safety; The 3rd, resource utilization is carried out comprehensive utilization of resources in lignin-sludge.

It is the mode that often adopts both at home and abroad at present that landfill---sludge digestion is carried out landfill again by dehydration.Landfill less investment, large, the instant effect of capacity, but the place should not be sought, mud transportation and landfill yard construction cost are higher, the landfill finite capacity, the seepage of objectionable constituent may cause groundwater pollution, the health of landfill yard, foul smell can cause secondary pollution, and the nutritive substance that contains in the mud can make a large amount of pathogenic bacteria procreations etc.If the problem of most critical is mud and directly enters the engineering accident that landfill yard will cause landfill yard without pre-treatment.In recent years, the part landfill yard has begun to reject mud and has entered, so the mode of landfill disposal disposing sludge will be faced with restriction.

The soil utilizes---and utilize plant nutrition nitrogen in the mud, phosphorus, potassium etc., mud is made fertilizer or soil improvement agent, be used for afforestation, soil improvement, agricultural.Heavy metal in the mud belongs to the pollutant component that can not degrade, and the speed of moving in soil is extremely slow, though mud through compost, the continuous accumulation that heavy metal wherein also can be in soil.From the whole country, the disposal options of soil utilization also will face increasingly strict restriction.

Material of construction utilizes---and utilize the inorganicss such as silicon in the mud, aluminium, iron, calcium to make the material of construction such as cement, brick, pottery, alternative existing resource-hungry building materials.The building materials utilization of mud has light ceramic processed, melting devitrified glass processed, produces cement etc.But brick-tile industry is as a kind of sunset industry, and industry integral body will be faced with transition, so, rely on the material of construction mud that is used to dissolve also will face adverse conditions.

Burn---utilize incinerator with the dewatered sludge heat drying, use again the organism in the high temperature oxidation mud, make mud become a small amount of ashes.Burning can realize mud maximum minimizing; All pathogenic agent all can be killed, and toxic pollutant is oxidized, much lower than in the mud of the heavy metal activity in dust and the lime-ash.But the sludge incineration investment is large, processing costs is high, organic compound combustion produces the highly toxic substances such as Dioxins.Therefore, sludge incineration disposal options also is not suitable for promoting on a large scale.

For the present situation of present domestic ﹠ Mud, need a kind of cheaply ﹠ Mud method badly, with the minimizing that realizes ﹠ Mud, innoxious, stabilization and resource utilization.

Summary of the invention

For defects, the technical problem that the present invention solves is to provide a kind of production method of sewage sludge biomass environment-friendly fuel, realize the minimizing of ﹠ Mud, innoxious, stabilization and resource utilization, effectively solve the problem of mud secondary pollution, and obtain biomass environment-friendly fuel, can replace coal to enter boiler combustion, when remedying the ﹠ Mud cost, also can effectively solve the energy starved social concern.

In order to solve above technical problem, the production method of sewage sludge biomass environment-friendly fuel provided by the invention comprises the steps:

1), sludge pretreatment: mud is delivered to pretreatment pool, and adds reodorant, sterilant, stir;

2), sludge modification: pretreated mud is delivered to reaction tank, and adds properties-correcting agent, sulphur-fixing agent, denitrfying agent, heavy metal stabilizer, after the homogeneous reaction, add again the biomass through pulverizing;

3), deeply dehydrating sludge: the mud after the modification carries out deep dehydration;

4), drying sludge: the mud cake behind the deep dehydration carries out drying treatment after fragmentation.

Preferably, also comprise the step 5) mud granulizing after the step 4): dried mud is carried out granulation.

Preferably, in the step 1), described reodorant is plant extraction liquid stoste, and add-on is 0.005-0.01L/kg.DS, and sterilant is 27.5% hydrogen peroxide, and add-on is 0.01-0.03L/kg.DS.

Preferably, step 2) in, described properties-correcting agent is Al 2O 3With the mixture of molysite, add-on is 0.05 ~ 0.1kg/kg.DS, and sulphur-fixing agent is unslaked lime, and add-on is 0.05 ~ 0.2kg/kg.DS, and heavy metal stabilizer is amino-complex, 0.1 ~ 0.25kg/kg.DS.

Preferably, step 2) in, described biomass are a kind of or combination in stalk, wood shavings, sawdust or the deadwood leaf, the amount that adds biomass is 0.6 ~ 1.5kg/kg.DS.

Preferably, in step 1), step 2) and step 4) in, increase odor removal and carry out deodorizing and process.

Preferably, in step 3), increase filtrate collection, and filtrate is carried out sewage disposal.

Preferably, in step 4) and step 5), increase fly-ash separator and carry out dust removal process.

Preferably, in step 3), water ratio is reduced to below 50% behind the deeply dehydrating sludge.

Preferably, in step 4), the water ratio of the mud after the drying treatment is 10%-20%.

Compared with prior art, the production method of sewage sludge biomass environment-friendly fuel provided by the invention, technique is simple, facility investment is few, flexible operation, safe and reliable, running cost is low, realizes the minimizing of ﹠ Mud, innoxious, stabilization and resource utilization, effectively solves the problem of mud secondary pollution, and obtain biomass environment-friendly fuel, can replace coal to enter boiler combustion, when remedying the sludge treatment cost, also can effectively solve the energy starved social concern.

Description of drawings

Fig. 1 is the schema of the production method of sewage sludge biomass environment-friendly fuel among the present invention.

Embodiment

For those skilled in the art can understand technical scheme provided by the present invention better, set forth below in conjunction with specific embodiment.

See also Fig. 1, this figure is the schema of the production method of sewage sludge biomass environment-friendly fuel among the present invention.

Embodiment 1

A kind of manufacture method of sewage sludge biomass environment-friendly fuel mainly is comprised of following steps:

1), sludge pretreatment: to pretreatment pool, thin up after dilution stirs, adds reodorant and removes stink, adds sterilant again, kills microorganism, insect and pathogenic agent in the mud with the wet mud vehicle-mounted transport of water ratio 82%;

2), sludge modification: pretreated mud is delivered to reaction tank, keep continuously stirring, and be taken up in order of priority and add according to quantity properties-correcting agent, sulphur-fixing agent, heavy metal stabilizer, the timed interval of every kind of adding of agent is about 10 minutes, after all adding of agent is finished, continuously stirring adds the sawdust through pulverizing again after 1 hour, the dosage of sawdust is 40% of mud weight;

3), deeply dehydrating sludge: utilize spiral pump that mud is conveyed into pressure filter and carry out deep dehydration, moisture percentage in sewage sludge is reduced to 30% behind the deep dehydration, and it is stand-by that mud cake is stored in hopper through fragmentation, filtrate through collection enter sewage work process up to standard after discharging;

4), drying sludge: the mud after the fragmentation enters drying machine and carries out drying, and the water ratio of dry rear mud is about 15%;

5), mud granulizing: dried mud enters tablets press and carries out granulation, obtains the sewage sludge biomass environment-friendly fuel.

Embodiment 2

A kind of manufacture method of sewage sludge biomass environment-friendly fuel mainly is comprised of following steps:

1), sludge pretreatment: the sludge pipe of water ratio 98% is delivered to pretreatment pool, adds reodorant and remove stink, add again sterilant, kill microorganism, insect and pathogenic agent in the mud.

2), sludge modification: pretreated mud is delivered to reaction tank, keeps continuously stirring, and be taken up in order of priority and add according to quantity properties-correcting agent, sulphur-fixing agent, heavy metal stabilizer, the timed interval of every kind of adding of agent is about 10 minutes.After all adding of agent was finished, continuously stirring added the wood shavings through pulverizing again after 1 hour, and the dosage of wood shavings is 40% of mud weight;

3), deeply dehydrating sludge: utilize spiral pump that mud is conveyed into pressure filter and carry out deep dehydration, moisture percentage in sewage sludge is reduced to below 20% behind the deep dehydration.It is stand-by to be stored in hopper behind the cake crushing, filtrate through collection enter sewage work process up to standard after discharging;

4), drying sludge: the mud after the fragmentation enters drying machine and carries out drying, and the water ratio of dry rear mud is about 10%;

5), mud granulizing: dried mud enters tablets press and carries out granulation, obtains the sewage sludge biomass environment-friendly fuel.

Embodiment 3

A kind of manufacture method of sewage sludge biomass environment-friendly fuel mainly is comprised of following steps:

1), sludge pretreatment: the sludge pipe of water ratio 93% is delivered to pretreatment pool, adds reodorant and remove stink, add again sterilant, kill microorganism, insect and pathogenic agent in the mud.

2), sludge modification: pretreated mud is delivered to reaction tank, keeps continuously stirring, and be taken up in order of priority and add according to quantity properties-correcting agent, sulphur-fixing agent, heavy metal stabilizer, the timed interval of every kind of adding of agent is about 10 minutes.After all adding of agent was finished, continuously stirring added the deadwood leaf through pulverizing again after 1 hour, and the dosage of deadwood leaf is 20% of mud weight;

3), deeply dehydrating sludge: utilize spiral pump that mud is conveyed into pressure filter and carry out deep dehydration, moisture percentage in sewage sludge is reduced to below 30% behind the deep dehydration.It is stand-by to be stored in hopper behind the cake crushing, filtrate through collection enter sewage work process up to standard after discharging;

4), drying sludge: the mud after the fragmentation enters drying machine and carries out drying, and the water ratio of dry rear mud is about 20%;

5), mud granulizing: dried mud enters tablets press and carries out granulation, obtains the sewage sludge biomass environment-friendly fuel.

The sewage sludge biomass environment-friendly fuel that the present invention makes, its product index is: calorific value 〉=3600 kilocalorie/kilograms; Moisture content 8% ~ 15%; Ash content≤22%; Volatile matter 〉=55%; Organism 〉=52%, sulphur content≤0.45%.

Compared with prior art, the production method of sewage sludge biomass environment-friendly fuel provided by the invention, can realize the minimizing of ﹠ Mud, innoxious, stabilization and resource utilization, effectively solve the problem of mud secondary pollution, and obtain biomass environment-friendly fuel, can replace coal to enter boiler combustion, when remedying the processing cost of mud, also can effectively solve the energy starved social concern.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (8)

1. the production method of a sewage sludge biomass environment-friendly fuel is characterized in that, comprises the steps:
1), sludge pretreatment: mud is delivered to pretreatment pool, and adds reodorant, sterilant, stir; Described reodorant is plant extraction liquid stoste, and add-on is 0.005-0.01L/kg.DS, and sterilant is hydrogen peroxide, and add-on is 0.01-0.03L/kg.DS;
2), sludge modification: pretreated mud is delivered to reaction tank, and adds properties-correcting agent, sulphur-fixing agent, heavy metal stabilizer, after the homogeneous reaction, add again the biomass through pulverizing; Described properties-correcting agent is Al 2O 3With the mixture of molysite, add-on is 0.05 ~ 0.1kg/kg.DS, and sulphur-fixing agent is unslaked lime, and add-on is 0.05 ~ 0.2kg/kg.DS, and heavy metal stabilizer is amino-complex, 0.1 ~ 0.25kg/kg.DS;
3), deeply dehydrating sludge: the mud after the modification carries out deep dehydration;
4), drying sludge: the mud cake behind the deep dehydration carries out drying treatment after fragmentation.
2. the production method of sewage sludge biomass environment-friendly fuel according to claim 1 is characterized in that, also comprises the step 5) mud granulizing after the step 4): dried mud is carried out granulation.
3. the production method of sewage sludge biomass environment-friendly fuel according to claim 1 is characterized in that step 2) in, described biomass are a kind of or combination in stalk, wood shavings, sawdust or the deadwood leaf, the amount that adds biomass is 0.6 ~ 1.5kg/kg.DS.
4. the production method of sewage sludge biomass environment-friendly fuel according to claim 1 is characterized in that, in step 1), step 2) and step 4) in, increase odor removal and carry out deodorizing and process.
5. the production method of sewage sludge biomass environment-friendly fuel according to claim 1 is characterized in that, in step 3), increases filtrate collection, and filtrate is carried out sewage disposal.
6. the production method of sewage sludge biomass environment-friendly fuel according to claim 2 is characterized in that, in step 4) and step 5), increases fly-ash separator and carries out dust removal process.
7. the production method of sewage sludge biomass environment-friendly fuel according to claim 1 is characterized in that, in step 3), water ratio is reduced to below 50% behind the deeply dehydrating sludge.
8. the production method of sewage sludge biomass environment-friendly fuel according to claim 1 is characterized in that, in step 4), the water ratio of the mud after the drying treatment is 10%-20%.
CN 201110388048 2011-11-29 2011-11-29 Production method of sludge biomass environment-friendly fuel CN102491608B (en)

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Publication number Priority date Publication date Assignee Title
CN102690698B (en) * 2012-06-15 2013-12-11 蒋伟 Sludge fuel and manufacturing method thereof
CN103756749B (en) * 2014-01-26 2015-09-23 常州信息职业技术学院 Production line of a kind of sludge straw propellant combination and preparation method thereof
CN105985824A (en) * 2015-02-05 2016-10-05 南通东能生物能源有限公司 Oily sludge biomass briquettes fuel
CN105819644B (en) * 2016-05-25 2019-05-03 北京航纳科技有限公司 A kind of oily sludge innocuity disposal system and method
CN106746400A (en) * 2016-12-16 2017-05-31 广州市威士环保科技有限公司 A kind of method of sludge energy
CN107937083A (en) * 2017-11-21 2018-04-20 桂林市安琪玫瑰农业发展有限公司 A kind of method that biomass sludge regeneration prepares biomass fuel
CN108753403A (en) * 2018-07-10 2018-11-06 南京师范大学镇江创新发展研究院 A kind of method that municipal sludge collaboration biomass prepares exotic fuels
CN109020156A (en) * 2018-08-27 2018-12-18 成都信息工程大学 A method of improving sludge from wastewater treatment plant water separation capability
CN109097148A (en) * 2018-09-30 2018-12-28 安乡龙威新能源科技开发有限责任公司 A method of fuel is fabricated to using municipal sludge

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CN101746941B (en) * 2008-12-10 2012-11-14 清华大学 Biological drying method for treating dewatered sludge of urban sewage plant
CN101914404B (en) * 2010-08-20 2013-04-10 长沙达华污泥处理科技有限公司 Method for preparing solid fuel from sludge of sewage treatment plant
CN102002410A (en) * 2010-10-29 2011-04-06 华南理工大学 Preparation method of composite biological particle fuel
CN102021057A (en) * 2010-11-30 2011-04-20 宁波国海能源科技有限公司 Method for preparing biomass solid molding fuel
CN102021061B (en) * 2010-12-13 2013-06-19 北京昊业怡生科技有限公司 Method for preparing fuel from organic sludge

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Effective date of registration: 20170713

Address after: 518000, B, block 1509, innovation and Technology Plaza, Tian An Digital City, Shenzhen, Guangdong, Futian District

Patentee after: Shenzhen Ze source energy Limited by Share Ltd

Address before: 511340 Guangdong city of Guangzhou province Zengcheng Xintang Donghua Town Development Zone Guangzhou, environmental protection science and technology limited company

Patentee before: Zeng Xiuyi