CN100535522C - Water hyacinth resource processing method - Google Patents
Water hyacinth resource processing method Download PDFInfo
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- CN100535522C CN100535522C CNB2008100568160A CN200810056816A CN100535522C CN 100535522 C CN100535522 C CN 100535522C CN B2008100568160 A CNB2008100568160 A CN B2008100568160A CN 200810056816 A CN200810056816 A CN 200810056816A CN 100535522 C CN100535522 C CN 100535522C
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
The invention discloses a resourced processing method for common water hyacinths, belongs to the technical field of environment protection projects, which comprises steps as follows of hot-bleaching the fresh common water hyacinths collected, dehydrating the common water hyacinths in a centrifuge and then dehydrating in a compressor. When the rate of water content is >=40% after pressing and dehydrating, the water hyacinths can be directly sent into a incinerator for burning, when the rate of water content is >40%, drying the common water hyacinths in a drier until the rate of water content is between 25% and 40% after drying, then sending into the incinerator for burning. Heat source for hot bleaching and drying comes from heat of flue gas produced in the incinerator. Heat produced by burning the common water hyacinths can be used for power generation, providing steam for heat user, further waste liquid can be used for producing organic liquid fertilizer and ash produced in the incinerator can be used for fertilizer addition agent. During the process of burning, an auxiliary fuel does not need to be added, thereby providing a method for overall utilization of the common water hyacinths. The resourced processing method makes waste profitable, realizes resourced utilization of the common water hyacinths.
Description
Technical field
The present invention relates to a kind of recycling processing method of water hyacinth, belong to the environment-friendly engineering technical field.
Background technology
Water hyacinth has another name called Eichhornia crassipes, is Pontederiaceae, and the phoenix eyes Nelumbo is perennial floatability herbaceous plant, originates in South America.That water hyacinth happiness is born in is warm, on the sunny side and be rich in the organic hydrostatic, the anti-fertility of water hyacinth, disease resistance are all very strong, can be grown in pH5～8 scopes and unaffected.Water hyacinth begins breeding 13 ℃ of temperature, still can breed during 39 ℃ of temperature, and it has concurrently asexual and the generative propagation function, and especially based on vegetative propagation, repopulate and diffusivity are extremely strong, and the per hectare dry weight can be up to more than 50 tons.Under suitable condition, just can breed 1 new plant in per 5 days, can increase by 20%～30% biomass every day, calculates according to this speed, 1 strain water hyacinth just can reach 1.4 hundred million strains through breeding within 1 year, was to grow, breed one of the fastest water plant in the world.
When 60～seventies of 20th century, China's grain was the most in short supply, water hyacinth was promoted and plantation widely as feed.But along with developing rapidly of China's economic, mixed fodder replaces water hyacinth gradually, causes the water hyacinth utilization rate to reduce greatly and escapes to wild.Along with Chinese people's growth in the living standard and industrialized continuous development.Consequent sanitary sewage and industrial wastewater etc. have brought serious pollution to water body, many body eutrophications are very serious, for the quick breeding of water hyacinth provides prescribing adequate nutrition, cause water hyacinth to spread unchecked in 19 provinces of China, caused a series of harm.
Water hyacinth have vitality strong, breed characteristics rapidly, can cover the water surface, cause fierce intraspecific competition, cause perish, polluted-water, aggravation water body eutrophication degree.Intensive water hyacinth has reduced the penetration capacity of light to water body, increase concentration of carbon dioxide in the water, reduce the dissolved oxygen in water amount, hinder other hydrobiological growths and cause the ecological chain disequilibrium, the ecosystem is caused irreversible destruction, cause The loss of biodiversity.
A large amount of water hyacinths floats and combines in river course lake surface, usually cover large stretch of water surface, stop up the river course, influence shipping, hinder irrigation and drainage, other hydrobiological growth suffocates, and reduce output of aquatic products, quality, destroy fish production, and the ecology of the many important tourist attractions in the whole world has been caused serious threat, even threaten livestock consumption water and surrounding resident domestic water.Have a strong impact on the development of transport service, tourist industry and culture fishery.
At present, traditional method that water hyacinth is handled mainly is artificial salvaging, promptly utilizes artificial method that water hyacinth is salvaged water surface landfill disposal then.Publication number is CN1740328A, and name is called " method and the device of comprehensive utilization water hyacinth plant residue to produce methane "; Publication number is CN1539798A, and name is called " utilizing water hyacinth, crop cauline leaf to produce organic fertilizer technology "; Publication number is CN1583679A, and name is called " water hyacinth biological organic fertilizer ", and above processing method exists jointly that treating capacity is little, and processing speed is slow, and the production cycle is long, and waste residue is difficult to problems such as processing.
Summary of the invention
The technical problem to be solved in the present invention is: the treating capacity that exists at existing water hyacinth processing method is little, and processing speed is slow, and the production cycle is long, and waste residue is difficult to problems such as processing, the invention provides a kind of recycling processing method of water hyacinth.
Technical scheme of the present invention is:
A kind of recycling processing method of water hyacinth, the method includes the steps of:
The effect that heat is floated mainly is to make water hyacinth lose biological activity, destroys the histiocytic structure of water hyacinth, is later drying and press dewatering creation advantageous conditions.The water temperature that heat is floated is controlled at 90～100 ℃, and the time that heat is floated is 3～15 minutes.The time that heat is floated is relevant with the heat temperature of floating, and the heat temperature of floating is high more generally speaking, and the time that heat is floated is short more, and the concrete structure of the equipment that also floats with heat of heat time of floating is relevant simultaneously.Generally speaking, when water temperature was controlled at 100 ℃, heat was floated the time generally at 3～5 minutes; When water temperature was controlled at 90 ℃, heat was floated the time generally at 12～15 minutes.
Needed thermal source comes from the heat of the hot flue gas that incinerator produces in water hyacinth being carried out the process that heat floats.Heat is floated the water temperature control and the hot control of floating the time of process and is adopted automation control.
Centrifugal dehydration is to get rid of water hyacinth surface and inner free moisture.
The moisture content of the water hyacinth after the squeezer dehydration is 25%～70%.The dehydration rate of press dewatering is relevant with device structure, fashion of extrusion and squeeze pressure, if adopt the efficient high-pressure squeezing dewatering machine, can drop to below 40% through the water hyacinth moisture content behind the press dewatering, and best can reach 25%; If adopt common squeezer dewaterer, the water hyacinth moisture content behind the process press dewatering is generally between 50%～70%.
When moisture content＞40%, send into drying machine earlier and carry out drying, make the moisture content of dried water hyacinth 25%～40%, and then send in the incinerator and burn.
When the moisture content of water hyacinth is reduced to 40% when following, in incinerator, burn in the process of water hyacinth, the calorific value that himself has is enough to support its normal combustion, can not add fully as coal, natural gas, wet goods auxiliary fuel.In order to reach better more stable combustion efficiency, incinerator adopts circulating fluidized bed incinerator.
The heat that incinerator produces is used for generating electricity, and perhaps provides steam to hot user; The grey as fertilizer sources additive that incinerator produces.
In the withering process to water hyacinth, the thermal source of drying machine comes from the heat of the hot flue gas of incinerator generation.Drying machine adopts the contactless drying machine of drum-type, or adopts bake oven type c hot-air convection drying machine.
In the treatment process process of whole water hyacinth, float, in centrifugal dehydration and the press dewatering process, can produce and be rich in organic organic wastewater as heat, after this organic wastewater compiles, through further handling and concentrating, produce organic fertilizer as raw material, can not cause contaminated wastewater.
The invention has the beneficial effects as follows:
1. turn waste into wealth, can carry out recycling water hyacinth.Burn heat energy the present invention that water hyacinth produces and be and be used for that heat is floated and dry, perhaps be used for generating, perhaps provide steam to hot user, waste liquid can be produced organic fertilizer, and burning the ash that produces can the as fertilizer sources additive.
2. in the process of burning disposal water hyacinth, do not need to add auxiliary fuel, energy savings.
3. the comprehensive utilization for water hyacinth provides a kind of new method.
4. can a large amount of, quick, industrialized processing water hyacinths.
Description of drawings
Fig. 1 is the process flow diagram of moisture content＞40% o'clock behind the water hyacinth press dewatering.
Fig. 2 is the process flow diagram of moisture content≤40% o'clock behind the water hyacinth press dewatering.
Among the figure, the water hyacinth 1 of newly gathering, the thermal source 2 that heat is floated, the thermal source 3 of drying machine, the heat 4 of the hot flue gas that incinerator produces.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment one, shown in the process flow diagram of moisture content＞40% behind Fig. 1 water hyacinth press dewatering o'clock.
The moisture content of the water hyacinth 1 of newly gathering is about 90%～92%, its recycling processing method:
Coolant-temperature gage is controlled at 98 ℃, and the heat time of floating is 8 minutes.
The effect that heat is floated mainly is to make water hyacinth lose biological activity, destroys the histiocytic structure of water hyacinth, is later drying and press dewatering creation advantageous conditions.
The thermal source 2 that heat is floated in water hyacinth being carried out the process that heat floats comes from the heat 4 of the hot flue gas that incinerator produces.Heat is floated the water temperature control and the hot control of floating the time of process and is adopted automation control.
What adopt is the plain press extruding-desiccation machine, and the moisture content after the dehydration is 60%.
When the moisture content of water hyacinth is reduced to 40% when following, in incinerator, burn in the process of water hyacinth, the calorific value that himself has is enough to support its normal combustion, can not add fully as coal, natural gas, wet goods auxiliary fuel.
To handle 100 tons of fresh water cucurbits every day is example, by analysis and calculate, when the moisture content of squeezing back water hyacinth is 70%, can produce 20.5 tons of heating steams, or 5010 kilowatt hours of generating electricity, and can produce 6.7 tons of organic fertilizers; When the moisture content of squeezing back water hyacinth is 50%, can produce 29.7 tons of heating steams, or 7240 kilowatt hours of generating electricity, can produce 8 tons of organic fertilizers.In the present embodiment, the moisture content of the water hyacinth after the squeezing is 60%, can produce 26.3 tons of heating steams, or 6400 kilowatt hours of generating electricity, and can produce 7.5 tons of organic fertilizers.
Embodiment two, shown in the process flow diagram of moisture content≤40% behind Fig. 2 water hyacinth press dewatering o'clock.
The moisture content of the water hyacinth 1 of newly gathering is about 90%～92%, its recycling processing method:
Coolant-temperature gage is controlled at 96 ℃, and the heat time of floating is 10 minutes.
The effect that heat is floated mainly is to make water hyacinth lose biological activity, destroys the histiocytic structure of water hyacinth, is later drying and press dewatering creation advantageous conditions.
The thermal source 2 that heat is floated in water hyacinth being carried out the process that heat floats comes from the heat 4 of the hot flue gas that incinerator produces.Heat is floated the water temperature control and the hot control of floating the time of process and is adopted automation control.
What adopt is the efficient high-pressure extruding-desiccation machine, and the moisture content after the dehydration is 30%.
When the moisture content of water hyacinth is reduced to 40% when following, in incinerator, burn in the process of water hyacinth, the calorific value that himself has is enough to support its normal combustion, can not add fully as coal, natural gas, wet goods auxiliary fuel.
The heat that incinerator produces can also be used to generating, perhaps provides steam to supply with hot user, the grey as fertilizer sources additive that incinerator produces.The organic wastewater that produces in the entire process technical process is produced organic fertilizer through further handling and concentrate the back.
To handle 100 tons of fresh water cucurbits every day is example, by analysis and calculate, when the moisture content of squeezing back water hyacinth is 40%, can produce 32.1 tons of heating steams, or 7820 kilowatt hours of generating electricity, and can produce 8.3 tons of organic fertilizers.When the moisture content of squeezing back water hyacinth is 25%, can produce 34.2 tons of heating steams, or 8340 kilowatt hours of generating electricity, can produce 8.7 tons of organic fertilizers.In the present embodiment, the moisture content of the water hyacinth after the squeezing is 30%, can the production heat supply try to make a good showing 33.7 tons, or 8200 kilowatt hours of generating electricity, and can produce 8.6 tons of organic fertilizers.
Claims (5)
1. the recycling processing method of a water hyacinth is characterized in that, the method includes the steps of:
Step 1, the water hyacinth of newly gathering is carried out heat float: the water temperature that heat is floated is controlled at 96～98 ℃, and the time that heat is floated is 8～10 minutes;
Step 2 loses bioactive water hyacinth and sends into centrifuge and carry out centrifugal dehydration after heat is floated;
Step 3 is sent into squeezer then and is carried out press dewatering;
Step 4 when the moisture content of the water hyacinth behind the press dewatering≤40%, is directly sent into incinerator and is burned;
When moisture content＞40%, send into drying machine earlier and carry out drying, make the moisture content of dried water hyacinth 25%～40%, and then send in the incinerator and burn.
2. the recycling processing method of a kind of water hyacinth according to claim 1, it is characterized in that: heat is floated the heat that needed thermal source in the process comes from the hot flue gas that incinerator produces, and heat is floated the water temperature control of process and automation control is adopted in control that heat is floated the time.
3. the recycling processing method of a kind of water hyacinth according to claim 1 is characterized in that: the moisture content of the water hyacinth after the squeezer dehydration is 25%～70%.
4. the recycling processing method of a kind of water hyacinth according to claim 1 is characterized in that: in the dry process of handling, the thermal source of drying machine comes from the heat of the hot flue gas that incinerator produces.
5. the recycling processing method of a kind of water hyacinth according to claim 1 is characterized in that: incinerator employing circulating fluidized bed incinerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100568160A CN100535522C (en) | 2008-01-25 | 2008-01-25 | Water hyacinth resource processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100568160A CN100535522C (en) | 2008-01-25 | 2008-01-25 | Water hyacinth resource processing method |
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| Publication Number | Publication Date |
|---|---|
| CN101235966A CN101235966A (en) | 2008-08-06 |
| CN100535522C true CN100535522C (en) | 2009-09-02 |
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| CNB2008100568160A Expired - Fee Related CN100535522C (en) | 2008-01-25 | 2008-01-25 | Water hyacinth resource processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524696B (en) * | 2009-04-10 | 2011-08-17 | 南京大学 | Novel technique for hyacinth resource utilization |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109772860A (en) * | 2019-02-21 | 2019-05-21 | 环创(厦门）科技股份有限公司 | The recycling treatment process of water hyacinth |
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- 2008-01-25 CN CNB2008100568160A patent/CN100535522C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524696B (en) * | 2009-04-10 | 2011-08-17 | 南京大学 | Novel technique for hyacinth resource utilization |
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| CN101235966A (en) | 2008-08-06 |
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Granted publication date: 20090902 Termination date: 20120125 |