Microalgae culture and algae cake harvesting integrated equipment and method

Abstract

The invention provides microalgae culture and algae cake harvesting integrated equipment and method. The equipment comprises a raceway pond, a water pump, a dosing box, a reaction precipitation tank,a diaphragm pump and a plate-and-frame filter press, wherein the raceway pond, the water pump, the reaction precipitation tank, the diaphragm pump and the plate-and-frame filter press are sequentiallyconnected; and the dosing box is connected with the water pump. The beneficial effects of the method are as follows: 1, the method combines two traditional processes of microalgae culture and microalgae harvesting, and has the advantages of high efficiency, low cost, low energy consumption, no pollution, no need of secondary installation of industrial equipment and the like; 2, a microalgae culture and harvest integrated technology which is high in efficiency, low in cost and low in energy consumption and can realize industrial application is constructed, microalgae can be quickly settled under the flocculation action of a flocculant and the gravity action of the microalgae, the microalgae flocculation efficiency is up to 90% or above, algae cakes with the water content of about 40% can be obtained after passing through a plate-and-frame filter press, and the microalgae culture and harvest integrated equipment and method have a good industrialization prospect.

Description

technical field [0001] The invention relates to the field of microalgae cultivation and harvesting, in particular to an integrated equipment and method for microalgae cultivation and algae cake harvesting. Background technique [0002] Microalgae can effectively degrade and remove nitrogen and phosphorus pollutants in wastewater while using eutrophic components in wastewater such as nitrogen, phosphorus and other compounds to synthesize their own cell structure for growth and reproduction. Microalgae are rich in protein, polyunsaturated fatty acids and pigments, and have the advantages of fast growth and high yield per unit volume. Therefore, microalgae have broad application prospects in various fields such as biological feed, biopharmaceuticals, health products and fuels. However, the problem of high cost caused by the tedious cultivation and harvesting process of microalgae is a major problem at present, mainly including three aspects: first, microalgae individuals are e...

AI Technical Summary

Problems solved by technology

The advantage of the conventional centrifugation method is that it has a good dehydration effect and can effectively remove most of the free water in the algae liquid, but it will consume a huge amount of cost to process a large amount of microalgae culture liquid, and it is difficult to realize industrialization; the advantage of the filtration method is that the recovery rate and dehydration rate are relatively low. High, suitable for various filters and various types of membranes, the disadvantage is that it will cause problems such as membrane clogging during operation, and the energy consumption is high, the cost of membrane replacement is high, and it is difficult to realize industrialization; The liquid can achieve a high recovery rate and can be operated continuously, but there are problems of low dehydration rate and high cost

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