Blue algae low-temperature drying deep dehydration device and method

Abstract

The invention relates to the field of environmental treatment equipment, in particular to a blue algae mud low-temperature drying deep dehydration device and method. The device includes: a funnel-shaped feeding hole that is formed in the upper end of a shell; a cutting machine, of which an inlet is communicated with the lower end of the feeding hole; more than three conveying belts that are positioned below an outlet of the cutting machine; a low-temperature pipeline, of which the inlet end is communicated with the upper part of the shell; a granulator disposed between two of the conveyor belts; a collecting box which is arranged at the tail end of the conveying belt; and a high-temperature pipeline, of which the outlet is communicated with the bottom of the shell. A heat exchange unit isconnected between the low-temperature pipeline outlet and the high-temperature pipeline inlet; the conveying belts are of a porous structure, and the operation directions of every two adjacent conveying belts are opposite. A blower is arranged above the high-temperature pipeline. The blue algae mud dehydration device and dehydration method are small in occupied area, easy to operate, capable of saving energy and high in dehydration efficiency.

Description

technical field [0001] The invention relates to the field of environmental treatment equipment, in particular to a low-temperature drying deep dehydration device for cyanobacteria mud and a method thereof. Background technique [0002] After the outbreak of cyanobacteria blooms, if the cyanobacteria salvaged by physical methods are improperly handled, it is easy to cause secondary pollution. For example, unreasonable stacking, landfilling and other treatments, and the use of water polluted by cyanobacteria blooms for irrigation can cause cyanobacteria toxins to enter the soil. interface, the impact on soil ecology and environmental safety cannot be ignored. The effective use of blue-green algae resources is also the focus of attention of various countries. Reasonable use of blue-green algae resources not only protects the environment, but also generates new energy and can become a new type of industry. Spirulina not only contains nutrients such as N and P, but also has rich...

AI Technical Summary

Problems solved by technology

In the current treatment route, there is a bottleneck of deep dehydration difficulty. At present, the water content of algae mud after treatment is > 90% through pressure filtration dehydration with traditional pharmaceutical flocculants. After 24 hours of water control by water control technology, the water content is still 80%. Left and right, the subsequent storage and transportation of algae mud still bring inconvenience and high cost. At present, drying is mainly used for further dehydration, but there are shortcomings such as large area, long time and relatively large influence by weather factors.

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