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Algae photobioretor

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The photobioreactor is based on the photosynthesis of microalgae and is mainly used in facility-based microalgae breeding factories. It is an ecological recycling model of sewage and wastewater with microalgae cultivation as the center and the 3R recycling concept as the core. It breaks away from the traditional environmental protection treatment of sewage and wastewater. The passive mode (burning money and wasting resources) and the traditional aquaculture mode (pollution and waste) are a kind of aquaculture industry that can produce sustained economic benefits while being pollution-free and high-yield, and produce by-products such as biofuels, animal feed, and food. All are urgently needed at present. Microalgae cultivation requires a large amount of carbon dioxide as a nutrient source, which is of great significance in carbon sequestration and emission reduction carbon dioxide comprehensive utilization (CCUS). Therefore, sewage microalgae cultivation is one of the inevitable choices to solve the contradiction between food, energy and environment in the future.

The facility-based microalgae cultivation factory built with photobioreactors as the core is a circular cultivation based on sewage and wastewater that can produce sustainable economic benefits under the background of energy shortage, food shortage, ecological and economic sustainable development. Industry. It is an inevitable trend in sewage and wastewater treatment in the future.

Sewage and wastewater are complex components (containing nitrogen, phosphorus, potassium, heavy metals and even toxic substances) produced in our production and life. Direct discharge without treatment will have an irreversible impact on the environment. For sewage and wastewater, the traditional thinking is environmental protection treatment (biochemical, physical and chemical, membrane method, oxidation pond, artificial wetland;) or reclaimed water reuse. Due to limitations in design, operation management, environmental factors, etc., it is difficult to meet standards, high cost, and unavailable. Producing benefits is a common phenomenon, resulting in serious pollution and secondary pollution that cannot be ignored or ignored.

Sewage microalgae cultivation is a cyclic breeding industry based on sewage and wastewater that can produce sustainable economic benefits under the background of energy shortage, food shortage, ecological and economic sustainable development. It is an inevitable trend in sewage and wastewater treatment in the future.

The part of sewage that needs to be removed is what is required for the growth of microalgae (carbon dioxide, nitrogen, phosphorus, potassium and other substances). The sewage and wastewater (power plant flue gas, wastewater breeding plant sewage, cassava processing plant wastewater, food factory wastewater, etc.) are used as microalgae. Source of nutrients for growth. Not only does it reduce carbon dioxide emissions and purify sewage, the nutrients and phycocyanin extracted from microalgae are used to make health food and skin care products, cosmetics, feed, etc. In addition, biomass diesel can be extracted. Microalgae not only solves The economic benefits created by pollutants and by-products (products promoted by national policies) are also considerable.

Taking microalgae sewage cultivation to prepare biological feed as an example, the economic benefit generated by 400 tons/day of sewage is 38 million/year.