Qingdao Nanshan Biotechnology Co., Ltd. is a manufacturer of sodium alginate, providing sodium alginate price, food grade and printing and dyeing grade sodium alginate, active thickener and carrageenan.
Production process of sodium alginate Description of process flow: After the kelp is weighed, it is soaked in water 5 times the weight of dry kelp for 20 hours, drained, soaked in tap water and liquid alkali for 3 hours, and the wet kelp soaked for five times is sent to a pulverizer to be crushed to 2-3mm, washed with water, dewatered in a cage and sent to a digester; Adding 1% hot alkaline water (sodium carbonate) at 80℃ to kelp in a digester, stirring uniformly, standing for two hours, performing primary pulping, digesting for one hour, performing secondary pulping, and digesting for 0.5 hour, performing tertiary pulping, then placing in a dilution pool, diluting until it reaches Engel's for 100-120 seconds, uniformly mixing with compressed air, sending to a foaming machine for foaming and settling for 2.5-3 hours. The filtrate is pumped into a calcification system for calcification, and chlorine gas is added for bleaching at the same time, and 1% calcium solution (calcium chloride concentration is 10%) with glue solution is added, which is foamed by a foaming device and stirred at high speed, then enters an aging tank, and then enters a decalcification bucket to be decalcified with 5% hydrochloric acid, and then enters a cage for dehydration. After three decalcification, it is squeezed and dehydrated to generate alginic acid, which is then sent to a liquid phase converter and added with 75% ethanol solution. Neutralization to pH 9, centrifugal dehydration (distillation and recovery of waste ethanol solution), pelleting and granulating the centrifuged sodium alginate, drying it in a dryer until the water content is 16%-17%, then pulverizing it into 40 meshes in a mill, and packaging it after passing the inspection. In March, the average precipitation in Qingdao was only 7mm. By April 11th, 23 large and medium-sized reservoirs in the city had a total storage capacity of 37.60 million m, which was 129.57 million m less than last year. The rivers in the city were basically in a dry or cut-off state, and only Jihongtan Reservoir was available for raw water among the three major water sources in Qingdao!
The production of sodium alginate is affected by this,A ton of seaweed needs 1000 cubic meters of purified water. Can sodium alginate not be nervous because of the water shortage in Jiaodong Peninsula?