Culture medium and culture method for culturing Navicula seminude by using waste water from phosphate fertilizer factory
A kind of Navicula semi-navy, culture medium technology, applied in microorganism-based methods, biochemical equipment and methods, unicellular algae, etc., can solve problems such as troublesome operation, environmental and human health impact, complex process and so on
Active Publication Date: 2016-05-04
江西赣兴气体有限公司
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Problems solved by technology
This method requires a large investment in wastewater treatment. For example, the investment in sewage treatment equipment for small and medium-sized phosphate fertilizer plants is more than 100,000 yuan, and the annual operating cost is still more than 90,000 yuan. It occupies a large area and is difficult to operate. The treatment effect is affected by weather, temperature and production. The process has a great influence, the process is complicated, and the problem of waste residue stacking after lime neutralization is also difficult to solve, which is likely to cause secondary pollution
What's more, many phosphate fertilizer plants directly discharge untreated waste water into rivers or urban sewers through open channels or underground channels, causing serious impacts on the environment and human health, and causing secondary pollution such as eutrophication of water bodies.
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[0019] 1) Phosphate fertilizer plant wastewater pretreatment method: the phosphate fertilizer plant wastewater needs to be pretreated before it is used for algae cultivation. The method is: first filter the wastewater with a 60-mesh sieve to remove floating objects, glass slag, hair, sand, leaves, plastic bags The volume of larger solids is equal, and then the sewage is introduced into a cement aeration tank 30 meters long, 20 meters wide, and 0.7 meters deep. The tank is oriented east-west to receive more sunlight; the water depth is kept at 60 cm; Add 50 grams of quicklime to cubic meters of sewage and sprinkle the quicklime evenly (the quicklime is best to be dissolved in a plastic bucket by adding 5 liters of pure water to 1 kg in advance, diluted, stirred evenly, and then sprinkled in the whole pool), every 60 minutes, and then press Add 80 grams per cubic meter of sewage to the whole pond and pour alum (alum is best to be dissolved in a plastic bucket according to 100 gram...
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The invention discloses a culture medium and culture method for cultivating Navicula seminulum by utilizing phosphate fertilizer plant wastewater. The method can treat phosphate fertilizer plant wastewater at low cost, utilize waste, change wastes into valuable substances and obtain the Navicula seminulum with important bait value, thereby implementing waste utilization and changing wastes into valuable substances. In the traditional process, the Navicula seminulum is cultured in a plastic barrel or plastic film bag by using an f / 2 culture medium formula; and thus, the traditional process has the defects of low growth speed, high tendency to pollution, high cost, low benefits, labor consuming in operation, and high workload. In the invention, an improved rectangular runway tank is utilized for culture; phosphate fertilizer plant wastewater, sodium silicate, sodium platinate, chicken manure extract, sodium carboxymethyl cellulose, propylene glycol alginate, sodium D-isoascorbate, M-F trace element solution, ferric citrate and other components are added into the culture medium, and the organic fertilizers and inorganic fertilizers are mixed; and thus, the method has the advantages of more comprehensive and balanced nutrients, low tendency to pollution, low cost and high benefits, is convenient to operate, greatly enhances the growth speed of the Navicula seminulum, and enhances the yield by 360%.
Description
Technical field [0001] The invention belongs to the field of aquaculture, and particularly relates to a culture medium and a culture method for cultivating Navicula seminude by using wastewater from a phosphate fertilizer plant. Background technique [0002] In recent years, the pollution caused by the rapid development of the phosphate fertilizer industry has become more and more serious, which has attracted widespread attention. Statistics show that 40 tons of waste water are discharged for every ton of calcium magnesium phosphate fertilizer produced. The fluorine concentration in wastewater discharged from the production of phosphate fertilizer is as high as 120mg / L. Fluorine is an element harmful to humans, animals, and the environment. According to investigations by researchers, the detection rate of dental fluorosis among workers, their families and residents within 300 meters of the phosphate fertilizer plant is 8.4%, and that of children and adolescents is 36%. %. Fluor...
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IPC IPC(8): C12N1/12C12R1/89
Inventor王培磊
Owner江西赣兴气体有限公司