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A treatment method and technology of water hyacinth, applied in the direction of combustion method, incinerator, solid waste removal, etc., can solve the problems of small treatment volume, long production cycle, slow treatment speed, etc., and achieve the effect of energy saving and industrialized treatment
Inactive Publication Date: 2009-09-02
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is: in view of the existing water hyacinth treatment methods, the processing capacity is small, the processing speed is slow, the production cycle is long, and the waste residue is difficult to handle, etc., the present invention provides a water hyacinth resource treatment method
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Embodiment 1
[0032] Embodiment one, such as figure 1 The schematic diagram of the technological process when the water content of the water hyacinth after pressing and dehydration is greater than 40% is shown in the schematic diagram.
[0033] The water content of newly harvested water hyacinth 1 is about 90% to 92%, and its resource treatment method:
[0034] Step 1, heat bleaching the newly harvested water hyacinth 1;
[0035] The water temperature is controlled at 98°C, and the heat bleaching time is 8 minutes.
[0036] The main function of heat bleaching is to make the water hyacinth lose its biological activity, destroy the tissue cell structure of the water hyacinth, and create favorable conditions for subsequent drying and pressing dehydration.
[0037] During the process of bleaching the water hyacinth, the heat source 2 of the bleaching comes from the heat 4 of the hot flue gas produced by the incinerator. The water temperature control and the control of the bleaching time in t...
Embodiment 2
[0044] Embodiment two, such as figure 2 The schematic diagram of the technological process when the moisture content of the water hyacinth after pressing and dehydration is ≤40% is shown in the schematic diagram.
[0045] The water content of newly harvested water hyacinth 1 is about 90% to 92%, and its resource treatment method:
[0046] Step 1, heat bleaching the newly harvested water hyacinth 1;
[0047] The water temperature is controlled at 96°C, and the heat bleaching time is 10 minutes.
[0048] The main function of heat bleaching is to make the water hyacinth lose its biological activity, destroy the tissue cell structure of the water hyacinth, and create favorable conditions for subsequent drying and pressing dehydration.
[0049] During the process of bleaching the water hyacinth, the heat source 2 of the bleaching comes from the heat 4 of the hot flue gas produced by the incinerator. The water temperature control and the control of the bleaching time in the blea...
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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 [0001] The invention relates to a method for recycling water hyacinth and belongs to the technical field of environmental protection engineering. Background technique [0002] Water hyacinth, also known as water hyacinth, is a perennial floating herb native to South America. Water hyacinth likes to be born in warm, sunny and still water rich in organic matter. Water hyacinth has strong resistance to fertility and disease, and can grow in the pH range of 5-8 without being affected. Water hyacinth begins to reproduce at a temperature of 13°C, and can still reproduce at a temperature of 39°C. It has both asexual and sexual reproduction functions, especially asexual reproduction. The population recovery and diffusion capabilities are extremely strong, and the dry weight per hectare can reach 50 tons. above. Under suitable conditions, a new plant can be propagated every 5 days, and the biomass can be increased by 20% to 30% every day. According to this speed, on...
Claims
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Application Information
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