Deep dewatering method and power generation recycling method of blue algae

A deep dewatering and energy-based technology, applied in chemical instruments and methods, dewatering/drying/concentrating sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of high moisture content and complex products, and achieve market prospects Good and energy-efficient effects

Pending Publication Date: 2019-02-15
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water content of the product obtained after the technical solution is slightly higher, and ultrasonic treatment needs to be done before adding the flocculant during the treatment process, which is a bit complicated and there is room for improvement

Method used

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  • Deep dewatering method and power generation recycling method of blue algae

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The cyanobacteria deep dehydration method of the present embodiment comprises:

[0033] The first step, modification treatment: add a modification treatment agent to the cyanobacteria pulp, and add fibrous substances; the modification treatment agent includes at least one of calcium oxide, calcium hydroxide, ferric chloride, and polyaluminum chloride; the cyanobacteria The water content of the pulp is greater than 60%, the added weight of the modified treatment agent accounts for 1-10% of the weight of the dry matter of the blue-green algae in the blue-green algae pulp, and the added weight of the fibrous substance accounts for 0.1-6% of the weight of the dry matter of the blue-green algae in the blue-green algae pulp; The active substance is plant fiber; the plant fiber is tree sawdust and / or straw powder.

[0034] The second step, dehydration treatment: the cyanobacteria pulp obtained in the first step of modification treatment is dehydrated by dehydration equipment. ...

Embodiment 2

[0040] The cyanobacteria deep dehydration method of the present embodiment comprises:

[0041] The first step, modification treatment: add a modification treatment agent to the cyanobacteria pulp, and add fibrous substances; the modification treatment agent is one of calcium oxide, calcium hydroxide, ferric chloride, polyaluminum chloride or Various; the water content of the cyanobacteria pulp is greater than 60% and less than 99.9%, the added weight of the modified treatment agent accounts for 1 to 10% of the dry matter weight of the cyanobacteria in the cyanobacteria pulp, and the added weight of the fibrous substance accounts for 1% to 10% of the dry cyanobacteria in the cyanobacteria pulp. 0.1-6% by weight of the substance; the fibrous substance is plant fiber; the plant fiber is tree sawdust and / or straw powder.

[0042] The second step, dehydration treatment: the cyanobacteria pulp obtained in the first step of modification treatment is dehydrated by dehydration equipmen...

Embodiment 3

[0046] The cyanobacteria power generation energy conversion method of the present embodiment comprises:

[0047] (1) adopt the deep dehydration method of cyanobacteria of embodiment 1 to process cyanobacteria slurry, and obtain cyanobacteria cake;

[0048] (2) adding the blue-green algae cake into the incinerated matter, and then incinerating to generate electricity; the added weight of the blue-green algae cake accounts for 10-50% of the weight of the incinerated matter.

[0049] Among them, the incineration includes coal and / or household waste. Garbage incinerators are used for incineration for power generation; when incineration for power generation, the excess air is controlled by 30-100%, and the temperature is controlled at 600°C-700°C.

[0050] In this embodiment, the deeply dehydrated cyanobacteria can be used for incineration to generate electricity, thereby realizing the energy generation of cyanobacteria.

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Abstract

The invention relates to a deep dewatering method and a power generation recycling method of blue algae. The deep dewatering method of the blue algae comprises the steps of modification treatment anddewatering treatment, wherein the modification treatment is to add a modification treatment agent and a fibrous substance into blue alga slurry. The power generation recycling method of the blue algaecomprises the steps of adding a blue alga cake obtained by deep dewatering into an incineration substance for incineration power generation. Blue alga cells are modified by the modification treatmentagent and the fibrous substance; then, a water content of the blue algae can be reduced to be less than 60% only by dewatering through dewatering equipment; the method can achieve the deep dewateringof the blue algae through a simple process, is simple, convenient and easy to use and has good market prospects. In addition, the blue alga cake obtained by the dewatering is added into the incineration substance for incineration power generation, so that the power generation recycling of the blue algae is achieved.

Description

technical field [0001] The invention relates to a deep dehydration method of cyanobacteria and a power generation energy conversion method thereof, which is suitable for the treatment of cyanobacteria in eutrophic lakes, and belongs to the technical field of environmental protection and the technical field of biomass energy. Background technique [0002] According to the knowledge of the inventor, a large number of polluted lakes are in eutrophication in the world at present, and the nitrogen and phosphorus in the water body exceed the standard, which easily leads to the outbreak of algae bloom. The main species of water bloom is poisonous cyanobacteria. The cyanobacteria that make up the water bloom grow in large numbers and then die in large numbers. When they decompose, they emit unbearable stench, pollute water quality and air, and consume a large amount of dissolved oxygen in water, often causing a large number of fish Death by suffocation seriously damages ecosystems s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/143C02F11/145
CPCC02F11/14
Inventor 韩士群周庆巫佳杰
Owner JIANGSU ACAD OF AGRI SCI
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