Seaweed waste liquid can be used to produce multifunctional leaf fertilizer
China has abundant seaweed and rare earth resources. This technology is an innovative research achievement of Ocean University of China. There is no competition between similar products at home and abroad. According to the pilot production and application conditions, the cost of producing one mu of biological agent is only about 1.5 yuan, but it can increase production by 2 to 25%, and according to the value-added of 10%, grain crops and cash crops per mu. The average value is increased by about 100 yuan. In addition, organic phosphorous pesticides in foods can be reduced to ensure food safety. Therefore, this technology is turning waste into treasure, realizing the full utilization of resources for cleanliness and providing new ways for the safety and quality of food in China. The good technology of trails is also a core technology that is urgently needed to improve the competitiveness of seaweed companies. This technology is due to: 1 high product safety, there is no secondary pollution. 2 It has the dual effect of eliminating pesticide residues to promote crop growth, avoiding the need to use pesticides for increasing crop yields, and the use of pesticides has the potential to create potential safety hazards for pesticide residues. 3 The project realized the comprehensive utilization of resources. 4 wide range of product applications. Therefore, the risk of this technology is small. Technical brief At present, the chemical companies in Hainan are not using the waste after extracting mannitol and iodine but discharge it after antifouling treatment. Every day this part of the waste discharge is very impressive. For instance, Qingdao Mingyue Group releases more than 100 tons of waste liquid containing brown algae starch, fucoidan and other ingredients every day, which not only increases anti-pollution costs, but also causes waste of resources. If the waste liquid discharged after kelp processing is used for cleaning and high value use, the environmental treatment cost of the waste can be reduced. For example, Qingdao Mingyue Seaweed Group Co., Ltd. can reduce the cost by more than 10,000 yuan per day, if it can produce waste. According to the pilot test, only Qingdao Mingyue Seaweed Group Co., Ltd. can produce 50 tons of multi-functional foliar fertilizer per day at a unit price of 5,000 yuan per ton, which can add up to 250,000 yuan. 100 million yuan. It can be seen that breakthroughs and application development of this technology can not only bring about considerable economic and social benefits to seaweed companies, but also solve bottlenecks in the long-term development of enterprises. The promotion and application in the same industry in the country can significantly promote the rapid development of the seaweed processing industry in China. It has obvious radiation and leading role in technological development and industrial upgrading, and has obvious economic and social benefits. China has abundant marine polysaccharides and rare earth resources. The basic research on the application of marine polysaccharides found that, in addition to having a lot of biological activity, the fucoidan and the hydrolysis of oligosaccharides obtained by the fucoidan are used in agriculture, but also have the effect of significantly promoting the growth of crops and inducing the resistance of crops, etc. Is a new type of biological pesticide. The basic research on the application of rare earths found that rare earth elements (REEs) have many biological activities, such as enhancing the resistance of plants and animals, resisting diseases, resisting inflammation, regulating immune function and inhibiting tumors. The rare earth agricultural use is the first in our country, and it has been confirmed that REE is a beneficial element of plants and animals. The application of REE has become one of the effective measures to increase production and quality in China's planting and breeding industry. However, REE is easy to be precipitated with insoluble colloids under neutral conditions. At present, rare earth nitrate is mainly used in agricultural production, but the amount is large. Since REE is not an essential element of plants and animals, there is a limit to the amount of residues in food (2.0 mg/kg). Wang Dongfeng of Ocean University of China found that rare earths such as tea and kelp can combine with polysaccharides in the body to form natural polysaccharide complexes. Further research by Wang Dongfeng and other researchers also found that when lanthanum is combined with brown algae starch, it has a strong degradation effect on phosphatide bonds, such as hydrolysis of phosphodiester bonds in the natural state without hydrolysis of enzymes requires 2 million years, but brown algae starch hydrazine complexes are More than 60% of the 30 minutes of neutral physiological conditions are degraded. The above results suggest that the polysaccharide complex has a degradative effect on organophosphorus pesticides. The Qingdao Academy of Agricultural Sciences applied the polysaccharide rare-earth complex developed by China Ocean University in 2005 and showed that: for Chinese cabbage “Suzhou Blueâ€, the dry weight increased by 12.48%, and the organic phosphorus pesticide chlorpyrifos degraded to 0.541 mg/ Kg, control 1.256mg/kg, degradation rate was 56.93%; omethoate degradation to 0.161mg/kg, control 0.243mg/kg, degradation rate was 33.74%. Recently, Wang Dongfeng et al. used brown algae starch and tea polysaccharides as ligands to combine with rare earth ions to obtain polysaccharide rare-earth complexes. After application on spinach, they found that they not only greatly improved the quality of spinach, but also had Residues of chlorpyrifos have a very good degradation effect. Residues treated with polysaccharide-rare-earth complexes are about 1/3 of the control; they also have a good degradation effect on chlorpyrifos in water, and they are associated with chlorpyrifos at room temperature and neutral conditions. After 48 hours of reaction, the degradation rate of chlorpyrifos was about 95% higher than that of the control. According to the previous research results, it has been shown that the use of water-soluble carbohydrates in waste liquid after kelp processing can be used as a ligand to coordinate with a small amount of rare earth elements such as rare earth elements to produce a versatile foliar fertilizer. The core difficulty of this technology in the industrialized production process is how to quickly degrade the water-soluble polysaccharides in kelp waste liquid into oligosaccharides, and complex with rare-earth and other trace elements under certain conditions to form a stable, homogeneous, The product has strong degradation effect on organophosphorus pesticides and promotes the growth of crops. The above production technology has now been solved in the pilot process. The product has simple production process, easy access to raw materials, low investment, no pollution, low use cost, and meets the needs and requirements of current and future green food production. The research on the production technology and basic application of the product has published 8 papers in domestic academic journals, including 4 articles on SCI and 2 patent applications, of which one is authorized. 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