Novel water-supply composite water treatment agent

Abstract

The invention provides a novel water-supply composite water treatment agent which is composed of imidazoline quaternary ammonium salt, polyferric sulfate, polydimethyl diallyl ammonium chloride, peroxyacetic acid, alum and water. The imidazoline quaternary ammonium salt is prepared by the following steps: adding benzoic acid and triethylenetetramine into a 250ml three-neck flask in a mole ratio of 1:1, and meanwhile, adding xylene as a water carrying agent; and heating by an electric jacket, starting stirring, carrying out acylation reaction for 2 hours after the temperature rises to 150 DEG C, slowly heating to 220 DEG C, carrying out cyclization reaction for 2 hours to obtain an imidazoline intermediate, cooling the system to 90 DEG C, adding isopropanol and water as solvents, and carrying out quaterization reaction for 4 hours. The production technique comprises the following steps: (1) sequentially adding the polyferric sulfate, imidazoline quaternary ammonium salt, polydimethyl diallyl ammonium chloride, peroxyacetic acid and alum into a reaction kettle, charging nitrogen into the reaction kettle, and starting stirring; and (2) heating to 80-120 DEG C, and stirring uniformly until all the raw materials are completely dissolved, thereby obtaining the novel water-supply composite water treatment agent.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a novel composite water treatment agent for water supply. Background technique [0002] Water resources are extremely precious natural resources. With the development of industry, water resources are becoming increasingly scarce and water pollution is very serious. The oily wastewater in the petroleum industry mainly comes from the processes of petroleum exploration, petroleum refining and petrochemical production. With the development of the petroleum industry, more and more oily wastewater is produced, and most manufacturers choose to bury it deep in the soil or discharge it into rivers through urban channels. In this way, it not only causes waste of resources, but also brings great pollution to the environment. If oily wastewater enters the soil, it will use the soil voids to form an oil film, resulting in clogging, resulting in the infiltration of air, water and...

AI Technical Summary

Problems solved by technology

However, this will cause the separated water to contain high minerals such as calcium salts and magnesium salts, which are easy to crystallize and form scale, which will reduce the service life of the equipment

At the same time, oily wastewater contains hydrogen sulfide and carbon dioxide, which will corrode the pipes and pumps of the treatment system, easily cause scaling, and cause bacterial conjunctiva

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