Multifunctional scale inhibitor capable of inhibiting multiple types of scale

Abstract

The invention provides a multifunctional scale inhibitor capable of inhibiting multiple types of scale according to landfill leachate characteristics. The multifunctional scale inhibitor is characterized by being prepared from, by mass, 6%-29% of carboxylic acid polymer, 1%-35% of sulfonic acid copolymer, 3%-19% of compound containing five-element heterocyclic nitrogen and the balance water. The scale inhibitor is environmentally friendly and efficient, is effective for multiple types of salt scale such as phosphate scale, sulfate scale, magnesium hydroxide and calcium carbonate, especially has the good inhibiting effect on calcium phosphate, is obvious in effect and free of phosphorus and does not cause secondary pollution to a water body.

Description

technical field [0001] The invention relates to the field of scale inhibitors, specifically, it is a scale inhibitor developed for the characteristics of landfill leachate, especially for phosphate scale, sulfate scale, magnesium hydroxide, calcium carbonate, etc. in high hardness water systems It is effective for many types of scale salts, especially a highly effective scale inhibitor with good inhibitory effect on calcium phosphate. Background technique [0002] During the process of stacking and landfilling garbage, due to biochemical degradation such as compaction and fermentation, and at the same time, a liquid with high concentration of organic or inorganic components is produced under the seepage of precipitation and groundwater, which we call landfill leachate. Also called leachate. There are many factors affecting the production of leachate, mainly including the rainfall in the landfill area, the nature and composition of the waste, the anti-seepage treatment of th...

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Problems solved by technology

[0004] At present, for the characteristics of landfill leachate, the total nitrogen, ammonia nitrogen, alkalinity, hardness, and heavy metals are very high. Most of the existing antiscalants contain phosphorus, etc., which will cause secondary pollution to the water body, and are specially designed for landfill leachate. At present, the research and development of scale inhibitors for filtrate is relatively small, but for leachate, a water system with high hardness, total nitrogen, ammonia nitrogen, alkalinity, hardness, and high content of heavy metals, it is a multifunctional scale inhibitor that can be comprehensively treated even rarer

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