A preparation method of oil-containing seaweed-based water purification material
A technology based on water purification and seaweed, which is applied in the field of preparation of oil-containing seaweed-based water purification materials to achieve excellent performance, stable properties, operability and safety
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Embodiment 1
[0026] The purchased oil-producing golden algae is 0.1g L -1 The inoculum is added to the mariculture wastewater (TN=40mg L -1 , TP=3mg L -1 ), set the light-dark ratio to 12h:12h, start the culture at 10°C, and add an equal volume of marine aquaculture discharge tail water (TN=14mg L -1 , TP=0.4mg L -1 ), cultivate for 3 days to make the seaweed oil content reach 10%, and then follow 15mg L -1 Add a mixture of polyaluminum chloride and nano ferroferric oxide (the mass ratio of polyaluminum chloride and nano ferroferric oxide 4:1), and stir, coagulate, and collect the algae biomass. Put the collected seaweed biomass into a steam explosion reaction device, keep it at 105°C for 15 minutes, and rapidly release the pressure for steam explosion wall treatment. After steam explosion wall treatment, the seaweed biomass is collected and added to a dilute acid (1% acetic acid) aqueous solution containing chitosan (1%) and polyethylene glycol 1000 (0.25%) (where the dilute acid is 1%). % ...
Embodiment 2
[0029] Collect shrimp pond culture wastewater in a marine aquaculture base (TN=80mg L -1 , TP=15mg L -1 ), according to 0.2g L -1 Add the inoculum to the shrimp pond culture wastewater, set the light-dark ratio to 12h:12h, start the culture at 15°C, add an equal volume of marine aquaculture discharge tail water (TN=18mg L) after 8 days of culture -1 , TP=0.8mg L -1 ), continue to cultivate for 3 days to produce oil-containing seaweed biomass, the seaweed oil content is 30%, according to 15mg L -1 Add a mixture of polyaluminum chloride and nano-ferric oxide (mass ratio 4:1) added in an amount, and stir, coagulate and settle the algae biomass. Collect the seaweed biomass directly into the steam explosion reaction device, keep it at 120°C for 10 minutes, and quickly release the pressure for steam explosion wall treatment. After the steam explosion wall treatment, the seaweed biomass is collected and added to the dilute acid (1% hydrochloric acid) aqueous solution containing chitosan...
Embodiment 3
[0031] According to 0.2g L of the oil-producing diatom obtained from the purchase -1 The amount of inoculum is added to the prepared artificial seawater culture medium rich in nitrogen and phosphorus (from the seawater in the coastal waters, 60mg L of nitrogen is added -1 And phosphorus 8mg L -1 ), set the light-to-dark ratio to 12h:12h, start the culture at 20°C, add an equal volume of coastal seawater without additional nitrogen and phosphorus after 6 days of culture, continue the culture for 3 days, the seaweed oil content is 50%, according to 15mg L -1 Add a mixture of polyaluminum chloride and nano-ferric oxide (mass ratio 4:1) added in an amount, and stir, coagulate and settle the algae biomass. The mixture was directly put into the steam explosion reaction device, the temperature was kept at 150°C for 5 minutes, and the pressure was rapidly released to perform steam explosion wall blasting treatment. After the steam explosion wall treatment, the seaweed biomass is collect...
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