Method for culturing nitrogen fixation spirulina by using kitchen wastewater

Abstract

The invention discloses a method for culturing nitrogen fixation spirulina by using kitchen wastewater, and belongs to the technical fields of environment engineering and microalgae culture. According to the method, microelements are added into kitchen wastewater so as to prepare a microalgae culture medium for culturing microalgae, an effect of a Zarrouk culture medium can be generally achieved, use of chemical medicines is reduced, the environment pollution is also reduced, meanwhile the production cost of microalgae is lowered, sustainable microalgae production can be achieved, the culture medium is simple in preparation method, the kitchen wastewater can be used for culturing the microalgae without being sterilized, resource utilization of kitchen wastewater can be achieved, environment pollution can be reduced, the utilization rate of ammonia nitrogen in the kitchen wastewater can be 100%, the utilization rate of nitrous nitrogen can be up to 72.361%, the utilization rate of nitrate nitrogen is 7.849%, the utilization rate of TN is 32.035%, the absorption property of carbon sequestration spirulina on the nitrogen element is that NO2<-> -N is less than NH4<+>-N and greater than NO3<->-N, the nitrogen source in the wastewater is sufficient for spirulina to grow, and the utilization rate of TP is 59.140%.

Description

technical field

[0001] The invention relates to a method for cultivating nitrogen-fixing spirulina by using kitchen wastewater, and belongs to the technical fields of environmental engineering and microalgae cultivation. Background technique

[0002] With the combustion of fossil fuels and vehicle exhaust emissions, resulting in CO 2 A series of environmental problems that threaten the survival and development of human beings, such as the sharp increase of greenhouse gases and the intensification of the global greenhouse effect. Therefore, the focus of global attention is on reducing CO 2 emissions, the current focus on reducing CO 2 The technology mainly includes physical, chemical and biological methods, but because microalgae in CO 2 In terms of emission reduction, CO can be fixed through photosynthesis 2 The synthesis of organic compounds has the characteristics of fast growth, short cycle and high efficiency. However, most studies have shown that the production of m...

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