Method for simultaneously extracting iodine and fucoidin from salted kelp blanching wastewater
A technology of kelp blanching wastewater and fucoidan, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of inability to extract fucoidan, waste of resources, etc. Achieve the effect of reducing production costs and reducing emissions
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[0020] The technical solution of the present invention will be described in detail below in conjunction with the embodiments:
[0021] The method for simultaneously extracting iodine and fucoidan from salted kelp blanching wastewater includes the following steps:
[0022] 1) Cool the kelp blanching wastewater. During the peak harvest season of fresh kelp (early May to mid-July each year), each production line can blanch 160 tons of fresh kelp every day, and produce 20 tons of kelp blanching wastewater. The average iodine content in kelp blanching wastewater is about 700mg / L. First, install cooling pipes in the kelp blanching wastewater storage tank and the alkali refining tank, and pump the secondary cooling water into the cooling pipe to reduce the kelp blanching wastewater with a temperature above 90°C to 45°C. The secondary cooling water is used to blanch the next batch of fresh kelp.
[0023] 2) Use the inherent microorganisms in the kelp blanching wastewater to degrade the hig...
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