Method for resourceful treatment and use of water hyacinth

A process method and technology of water hyacinth, which are applied in the fields of ecological protection and waste treatment and utilization, can solve the problems of single water hyacinth reuse method, low resource utilization rate, and long production cycle, so as to improve the degradation rate of organic matter and biogas production capacity, High utilization rate of resources and the effect of increasing biogas production capacity

Pending Publication Date: 2018-12-18
中钢集团天澄环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the reuse method of water hyacinth is relatively simple. Although some recycled products can be obtained, more by-products that are difficult to handle are often produced, the resource utilization rate is low, the production cycle is long, and it is easy to cause secondary pollution

Method used

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  • Method for resourceful treatment and use of water hyacinth

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Comparison scheme
Effect test

Embodiment 1

[0049] The salvaged water hyacinths are naturally stacked in the open space, and the moisture content after natural drainage is 93% to 95%, and then crushed and beaten to form a slurry; the moisture content is 35% to 50% and the corn stalks are crushed into ≤ 1cm Minced: mix water hyacinth slurry, corn stalk minced and biogas slurry after anaerobic fermentation until the solid content of the mixture is 7% to 8%, and at the same time add nitrogen fertilizer to adjust the C / N to 20 to 25:1, add bacteria species (the strains include Acetobacter, Bacillus subtilis, and yeast, and the total number of effective viable bacteria in the strains is 2 to 7×10 7 cfu / ml), the ratio of the added mass of bacteria to the total mass of water hyacinth dry base and straw dry base is 5-7:1000; the hydraulic retention time of the mixed and tempered mixture is 1.5 days.

[0050] The mixture after staying for 1.5 days was subjected to anaerobic fermentation, the fermentation temperature was 35°C, an...

Embodiment 2

[0053] The salvaged water hyacinths are naturally stacked at the storage yard, and after natural drainage, the moisture content is 91% to 93%, and then crushed and beaten to form a slurry; the moisture content is 30% to 35%, and the wheat straw is crushed into ≤ 1cm minced water hyacinth slurry, wheat straw minced and biogas slurry after anaerobic fermentation are mixed together until the solid content of the mixture is 9% to 10%, and nitrogen fertilizer is added to adjust the C / N to 25 to 30:1. Strains (the strains include Acetobacter, Bacillus subtilis, and yeast, and the total number of effective viable bacteria in the strains is 5 to 10×10 7 cfu / ml), the ratio of the added mass of bacteria to the total mass of water hyacinth dry basis and straw dry basis is 7-10:1000; the hydraulic retention time of the mixed and tempered mixture is 2 days.

[0054] The mixture after staying for 2 days was subjected to anaerobic fermentation, the fermentation temperature was 35°C, and the ...

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Abstract

The invention belongs to the technical field of ecological protection and waste treatment and utilization and discloses a method for resourceful treatment and use of water hyacinth. The method comprises: pretreatment: stacking water hyacinth, draining the water hyacinth, breaking the water hyacinth, carrying out beating pulping through a pulping device to obtain water hyacinth slurry and crushingstraws to obtain straw powder, mixing conditioning: mixing the water hyacinth slurry and the straw powder, adding a strain and fermented biogas slurry into the mixture and carrying out conditioning toobtain a conditioned mixture, anaerobic fermentation: carrying out anaerobic fermentation on the conditioned mixture to obtain biogas and fermentation broth, biogas use: purifying and using the biogas, solid-liquid separation: carrying out solid-liquid separation on the fermentation broth to obtain biogas residues and biogas slurry for mixing conditioning, and composting treatment: mixing the biogas residues and the straw powder and carrying out composting treatment. The invention provides the high-efficiency method for resourceful treatment and use of water hyacinth. The method has a high resource utilization rate, produces rich varieties of products and has no secondary pollution.

Description

technical field [0001] The invention relates to the technical field of ecological protection and waste treatment and utilization, in particular to a process method for resourceful treatment and utilization of water hyacinth. Background technique [0002] Water hyacinth (also known as water hyacinth, scientific name: water hyacinth) is a floating aquatic plant native to the Amazon River Basin in South America and belongs to the genus Hyacinthaceae. Water hyacinth was once introduced by many countries and is widely distributed all over the world. It is also listed as one of the top 100 invasive alien species in the world. Water hyacinth reproduces rapidly, inhibits or affects the growth of other species, destroys ecological diversity, and easily causes regional ecological deterioration and single species; it affects the gas exchange between the atmosphere and water, reduces the penetration of light into the water body, affects the growth of underwater organisms, and increases ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P39/00C12P5/02C05F15/00C05F17/00C12R1/02C12R1/125
CPCC05F9/04C05F11/00C12P5/023C12P39/00C05F11/08C05F17/00Y02E50/30Y02W30/40
Inventor 朱海瀛崔瑞萍马晓辉吴蒙项丽君田亚军黄维
Owner 中钢集团天澄环保科技股份有限公司
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