HA-Na Compound Water Treatment Agent Applied In Chlor-alkali Industry Recycled Cooling Water

In chlor-alkali industry, sodium hydroxide continuously entering recycle cooling water causes pH, alkalinity ,chlorine ion high and scaling, serious corrosion, it affects normal production. It is difficult to eliminate its hazard by adopting phosphorus series water treatmeat in modern industry recycle cooling water treatment. So, it has become an important subject at domestic water treatment study to develop proper water finishing agent formula for different water quality.For humic acid series alkali substances have features of absorbing calcium and magnesium ion, innoxious and sodium humic has action of anti-fouling and corrosion inhibit, so it is the most significant to study and develop sodium humic compound water finishing agent and its features and principle.The subject adopts static anti-fouling method and rotating sample chip weightlessness method to study the anti-fouling and inhibitiveness of sodium humic compound agent and influencing factors and application effectiveness in lab. â‘ Tc study the anti-fouling and inhibitiveness and its influencing factors by simulating hard water(make up water). â‘¡Make check experiment of sodium humic compounc water finishing agent and phosphorus series water finishing agent and sodium humic â‘¢To check the treatment effectiveness by using sodium humic compound wate finishing agent compound water finishing agent in production. The experiment resul shows that the agent density, alkalinity, calcium ion, magnesium ion and PH etc have effect on anti-fouling and inhibited effect, the inhibited effect of sodium humi compound water finishing agent is better than phosphorus series agent and sodiun humic. In production, it discovers that sodium humic compound water finishin agent has features of bactericidal action, algae removal and dissolving scale. Agen is added into water and chelate with fouling ion such as calcium and magnesium ior its product occupies lattice-seat of crystal normally growing, and cause crystal skevcracked, distorted, soluble grain slag formed, and thereby anti-fouling and dissolving scale; in addition, sodium humic forms a black protective layer on steel surface which can isolate steel and water crystal and cooling water for direct contact, so inhibit metal corrosion and water scale deposited on metal surface.The test studied sodium humic compound water finishing agent of high-effective antifouling, corrosion inhibitation and disinfection and algae removal, it is suitable for high PH and high alkalinity in recycled cooling water and is for the first time at home. At the same time, it discussed its economic benefit, has an important significance to improve antifouling, corrosion inhibitation effect to develop and apply sodium humic.