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Deep dehydration method for blue-green algae

A technology of deep dehydration and cyanobacteria, applied in chemical instruments and methods, dehydration/drying/concentrated sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of reduction and resource utilization, environmental pollution, easy Problems such as rancidity and deterioration, to achieve the effect of reduction and resource utilization

Pending Publication Date: 2022-04-01
华润环保发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a kind of cyanobacteria by solving the problems of high water content of the algae mud separated by the algae-water separation station, easy to rot and deteriorate in long-term stacking, causing environmental pollution, and insufficient reduction and resource utilization. deep dehydration method

Method used

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  • Deep dehydration method for blue-green algae
  • Deep dehydration method for blue-green algae
  • Deep dehydration method for blue-green algae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 Shown, a kind of cyanobacteria depth dehydration method comprises steps,

[0031] S11, adding 1 kg of cyanobacteria mud with a moisture content of 85% separated by the algal water separation station into the high-pressure reactor and sealing it;

[0032] S21, the reactor is pressurized to 4MPa by a manual high-pressure plunger pump;

[0033] S31. Open the reaction kettle to stir the cyanobacteria mud, and at the same time, heat it to 200°C through an oil bath or high-temperature steam heating system, stop stirring after maintaining it for 15 minutes and lower it to normal temperature and pressure; the reaction kettle is stirred by mechanical or magnetic stirring, stirring The rotation speed is 500r / min; the heating temperature of the blue-green algae mud in the reaction kettle is collected in real time through the thermal resistance and interlocked to regulate the heating medium to maintain the temperature in the reaction kettle.

[0034] S41. The cya...

Embodiment 2

[0036] Such as figure 2 Shown, a kind of cyanobacteria depth dehydration method comprises steps,

[0037] S12, adding 1 kg of blue-green algae mud with a moisture content of 86% separated by the algae-water separation station into the autoclave and sealing it;

[0038] S22, the reactor is pressurized to 5MPa by a manual high-pressure plunger pump;

[0039] S32. Turn on the reactor to stir the cyanobacteria mud, and at the same time, heat it to 240°C through an oil bath or high-temperature steam heating system, stop stirring after maintaining it for 20 minutes and lower it to normal temperature and pressure; the reactor is stirred by mechanical or magnetic stirring, stirring The rotation speed is 1000r / min; the heating temperature of the cyanobacteria mud in the reactor is collected in real time through the thermal resistance and interlocked to regulate the heating medium to maintain the temperature in the reactor.

[0040] S42. The cyanobacteria slurry that has been collect...

Embodiment 3

[0042] Such as image 3 Shown, a kind of cyanobacteria depth dehydration method comprises steps,

[0043] S13, adding 1 kg of blue-green algae mud with a water content of 87% separated by the algae-water separation station into the high-pressure reactor and sealing it;

[0044] S23, the reactor is pressurized to 6MPa by a manual high-pressure plunger pump;

[0045] S33. Turn on the reactor to stir the cyanobacteria mud, and at the same time, heat it to 260°C through an oil bath or a high-temperature steam heating system, stop stirring after 25 minutes and lower it to normal temperature and pressure; the reactor is stirred by mechanical or magnetic stirring, stirring The rotation speed is 1500r / min; the heating temperature of the cyanobacteria mud in the reactor is collected in real time through the thermal resistance and interlocked to regulate the heating medium to maintain the temperature in the reactor.

[0046]S43. The cyanobacteria slurry that has been collected and pro...

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Abstract

The invention provides a deep dehydration method for blue-green algae, which comprises the following steps: adding blue-green algae mud separated by an algae-water separation station into a high-pressure reaction kettle, and sealing; pressurizing the reaction kettle through a manual high-pressure plunger pump; starting the reaction kettle to stir the blue-green algae mud, heating through an oil bath or a high-temperature steam heating system, maintaining for a period of preset time, stopping stirring, and cooling to normal temperature and normal pressure; and collecting the treated blue-green algae slurry, adding the collected blue-green algae slurry into a high-pressure filter pressing device, and carrying out filter pressing under the condition of not adding extra chemicals, so as to obtain a blue-green algae mud filter cake with the water content of 40-50%. The method disclosed by the invention has the beneficial effects that the problems of environmental pollution, insufficient reduction and resource utilization and the like caused by high water content, easiness in rancidity and deterioration due to long-term stacking of the blue-green algae mud separated by an algae-water separation station are solved, and the reduction and resource utilization of the blue-green algae are really realized.

Description

technical field [0001] The invention relates to a cyanobacteria dehydration method, in particular to a cyanobacteria deep dehydration method. Background technique [0002] Cyanobacteria, also known as blue-green algae, is a large-scale single species with a long evolutionary history, Gram-negative, no flagella, containing chlorophyll a, but not chloroplast (different from eukaryotic algae), capable of oxygenic photosynthesis Cytotrophic prokaryotes. [0003] A phenomenon in which cyanobacteria in a water body rapidly proliferates in large numbers to form cyanobacteria colonies that are visible to the naked eye or cause changes in the color of the water body, which is called a cyanobacteria bloom. In severe cases, it can float and accumulate on the surface of the water body to form a layer of green algae mat, or even algal pulp. When the cyanobacteria in the water body form a water bloom, on the one hand, it severely inhibits the oxygen produced by phytoplankton due to phot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/13C02F11/122C01B32/05
Inventor 邱传宝吕永兴路明哲佘肖伟田浩杨熊伟
Owner 华润环保发展有限公司
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