Harmless treatment of sodium alginate wastewater

Editor:Sodium alginate　　　　Source:Sodium alginate manufacturer　　　　2017-05-25 14:31

Sodium alginate is derived frombrown algagenerickelporsea grapeMiddle extractioniodineandmannitolSubsequentby-productIts molecule consists of β -D- mannuronic acid (β -D-mannuronic, m) and α -L- guluronic acid (α -l -L-guluronic, g) press (1→ 4) key connection. The aqueous solution of sodium alginate has high viscosity and has been used as food.Thickener、stabilizing agent、emulgatorWait. Sodium alginate is a non-toxic food, which was included in the United States Pharmacopoeia as early as 1938. Sodium alginate contains a lot of — COO－-,which can show polyanionic behavior in aqueous solution and has certain adhesion, can be used as a drug carrier for treating mucosal tissue. Under acidic conditions, — COO－-into — COOH，ionization degreeWhen decreasing, the hydrophilicity of sodium alginate decreases, the molecular chain shrinks and the pH value increases, — COOH group dissociates constantly, and the hydrophilicity of sodium alginate increases and the molecular chain stretches. Therefore, sodium alginate has obvious pH sensitivity. Sodium alginate can quickly form gel under extremely mild conditions, when Ca2+, Sr2+ and so on are present.cationWhen it exists, Na+ on G units reacts with divalent cations, and G units pile up to form cross-linked network structure, thus forming hydrogel. Sodium alginate formationgelMild conditions, which can avoid sensitive drugs, protein,cellandenzymeInactivation of such active substances. Because of these excellent characteristics, sodium alginate has been widely used in food industry and medicine.

With the country's attention to the natural environment, sodium alginate industry must take the route of environmental protection. With the rapid development of domestic economy, the negative impact of pollution is becoming more and more serious, which has become a social development issue that cannot be ignored. Environmental protection involves you, me and it. Let's protect our future home together.

　　sodium alginateAs a kind of chemical products, the main pollution is the waste water. Sodium alginate production wastewater is high-concentration organic wastewater, and the water contains high-concentration suspended solids. The main pollutant is a sticky substance formed by the combination of residue and water in the process of producing sodium alginate, mannitol and iodine from kelp. At present, China is the largest producer of sodium alginate in the world, and its products are not only supplied to China but also exported to many countries in the world every year. With the expansion of the application scope of sodium alginate, it is expected that the future output will reach a higher level. With the increase of the market, the number of domestic sodium alginate from manufacturers and the output value of products will be more objective. And its pollution must be treated reasonably and effectively, so as to protect nature, not harm it.

　　The wastewater discharged by enterprises has the characteristics of high organic pollution concentration, more suspended solids in water and low PH value, and it needs to meet the first-class standard of Integrated Wastewater Discharge Standard (GB8978-1996). Before biological treatment, it is necessary to remove suspended solids and adjust the PH value of wastewater to facilitate the operation of subsequent biological treatment. The concentration of organic pollutants in wastewater is high, and the pollutants are not easy to be biochemical, so it is necessary to choose anaerobic and aerobic biochemical treatment process to reduce the concentration of organic pollutants in treated effluent as much as possible.

　　Biological contact oxidation method is more environmentally friendly and advanced in China. After biological treatment, the wastewater still contains some colloidal substances and fine suspended solids. In order to remove this part of substances and further remove the organic matter in the wastewater, the physical and chemical treatment unit — — Coagulation and sedimentation+filtration. The filtered water can be discharged through the standardized discharge port.

　　Whether individuals or enterprises, environmental protection is urgent!Qingdao hongjie seaweedWe are willing to set an example and set an example for our future together.

How does sodium alginate gel?

Application of sodium alginate in pharmaceutical industry.

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