Antiscale corrosion inhibitor for recycling reclaimed water and preparation method thereof

Abstract

The invention discloses an antiscale corrosion inhibitor for recycling reclaimed water and a preparation method thereof. The antiscale corrosion inhibitor for recycling reclaimed water is prepared from the following components in percentage by weight: 25-30% of phosphine-containing acrylic acid-acrylate-maleic acid multielement multipolymer, 30-35% of phosphine-containing acrylic acid-acrylate-AMPS (2-acrylamido-methylpropanesulfonic acid) multielement multipolymer, 7-10% of gluconate, 1-1.5% of azole, 1-1.5% of tungstate, 4-8% of zinc salt and 15-30% of water. The antiscale corrosion inhibitor for recycling reclaimed water is suitable for recycling high-hardness high-alkalinity reclaimed water in the representative smelting industry into an industrial circulation cooling water system, has favorable antiscale and corrosion inhibition properties, and can effectively prolong the operation cycle of production equipment, thereby creating beneficial conditions for the enterprise for saving the water resources, reducing the sewage discharge and protecting the environment.

Description

technical field [0001] The invention relates to the field of scale and dispersant agents, in particular to a scale and corrosion inhibitor for reuse of reclaimed water and a preparation method thereof. Background technique [0002] The water quality of smelting wastewater is complex, and the water quality is mostly acidic, containing heavy metals and other toxic substances in a high concentration, which seriously pollutes the environment. At present, the water reuse efficiency of existing domestic smelting enterprises is generally relatively low, and it is far lower than the average reuse level of industrial water in developed countries. The main reason for restricting water reuse is that in the front-end treatment process of smelting wastewater, the traditional treatment method adopted is mainly the neutralization method, and a large amount of lime is added to achieve the purpose of neutralizing the acid wastewater and removing heavy metals by precipitation, so that the eff...

AI Technical Summary

Problems solved by technology

The main reason for restricting water reuse is that in the front-end treatment process of smelting wastewater, the traditional treatment method adopted is mainly the neutralization method, and a large amount of lime is added to achieve the purpose of neutralizing the acid wastewater and removing heavy metals by precipitation, so that the effluent after treatment The pH value, calcium ion and sulfate ion content are high, and it is easy to cause serious fouling during reuse, which seriously limits the reuse of this type of wastewater

At present, some enterprises passively prevent scaling by adding scale and corrosion inhibitors in the process of wastewater reuse, without considering the applicable range and limit value of the stabilizing effect of scale and corrosion inhibitors on calcium ions in wastewater. As the number of wastewater cycles increases, the antiscalant is prone to failure, and it is also likely to affect the production process