Improved blue algae treatment utilization method

A technology of cyanobacteria and livestock and poultry manure, which is applied to the treatment and application of biological organic parts, the preparation of organic fertilizers, etc., can solve the problems that are not necessarily scientific, and the digestion rules are not clear, so as to facilitate the expansion of production and save the cost of treatment Effect

Inactive Publication Date: 2008-09-03
WUXI MASHENG ENVIRONMENT ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other utilization methods, direct returning to the field is the most economical method, but it is not the safest method, because cyanobacteria contain algal toxins, how do these algal toxins affect seeds, roo

Method used

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  • Improved blue algae treatment utilization method

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Effect test

Embodiment 1

[0018] Embodiment 1, blue-green algae and poultry excrement are mixed in anaerobic reactor by dry weight ratio of 2: 1, then pass into N 2 cause anaerobic state, N 2 The feed volume is the remaining volume after subtracting the effective volume from the total volume of the reactor. Ferment at 33°C. In the reactor, add raw materials intermittently and periodically to control the moisture content of cyanobacteria to 3% and the moisture content of livestock and poultry manure to 30%. .

Embodiment 2

[0019] Embodiment 2, blue-green algae and livestock and poultry manure are mixed in anaerobic reactor by dry weight ratio of 3: 1, then pass into N 2 cause anaerobic state, N 2 The feed volume is the remaining volume after subtracting the effective volume from the total volume of the reactor. Ferment at 37°C. In the reactor, add raw materials intermittently and periodically to control the moisture content of cyanobacteria to 4.5%, and the moisture content of livestock and poultry feces to 20%. .

Embodiment 3

[0020] Embodiment 3, blue-green algae and poultry excrement are mixed in anaerobic reactor by dry weight ratio of 2.5: 1, then pass into N 2 cause anaerobic state, N 2 The feed volume is the remaining volume after subtracting the effective volume from the total volume of the reactor. Ferment at 35°C. In the reactor, add raw materials intermittently and periodically to control the moisture content of cyanobacteria to 6% and the moisture content of livestock and poultry manure to 25%. .

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Abstract

This invention is an improved method for dealing with cyanobacteria, which can realize a harmless and resourceful treatment of cyanobacteria with automatic control, low operation cost, no secondary pollution and easy management. The method is characterized in that cyanobacteria and animal manure or sludge and other biomass can be used together as the fermentation material to obtain biogas through anaerobic digestion and the biogas is used to generate power or is burned for a direct use, and the biogas residue and biogas slurry are recovered to field or the biogas residue can be developed into feeds or organic fertilizers.

Description

(1) Technical field [0001] The invention relates to the technical field of waste resource treatment, in particular to a method for producing biogas by anaerobic fermentation of mixed cyanobacteria and livestock manure or sludge. (2) Background technology [0002] In nutrient-rich water bodies, cyanobacteria often multiply in large numbers in summer, and form a layer of blue-green and fishy-smelling floating foam on the water surface, which is called "water bloom", and large-scale cyanobacteria outbreaks are called "green tides". (corresponding to the red tide that the ocean produces). Green tides cause water quality to deteriorate, and in severe cases deplete the oxygen in the water and cause the death of fish. What's more serious is that some species of cyanobacteria (such as Microcystis) also produce toxins (MC for short), and about 50% of green tides contain a large amount of MC. In addition to direct toxicity to fish, humans and animals, MC is also an important cause o...

Claims

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Application Information

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IPC IPC(8): C05F17/00C12P5/02
CPCY02E50/343Y02E50/30Y02W30/40
Inventor 阮文权严群赵明星
Owner WUXI MASHENG ENVIRONMENT ENERGY TECH CO LTD
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