A kind of preparation method of regenerated water decolorizing agent

Abstract

The invention discloses a method for preparing a recycled water decolorizing agent. The method comprises the following steps: by adopting an one-step process, adding the following components in parts by mass into a reactor: 6-9 parts of formaldehyde, 8-9 parts of dicyandiamide, 4-8 parts of ammonium chloride and 18-30 parts of water, uniformly stirring and mixing, heating to 70-80 DEG C, reacting for 2.5-3 hours, cooling to room temperature to obtain the recycled water decolorizing agent. The method disclosed by the invention has the advantages that the problem that an ideal recycled water decolorizing agent lacks at present is solved and the obtained decolorizing agent is remarkable in decolorizing effect; compared with the existing decolorizing agents, the obtained decolorizing agent has the advantages that the preparation process is simpler, the precipitation property of producing floccule is more excellent and the flocculation cost is reduced; the method can be combined with existing treatment processes of water works and is wide in applicability; the obtained decolorizing agent is simple in preparation process and rapid in decolorizing process, so that the method has a positive significance on colority emergency treatment of the water works.

Description

technical field [0001] The invention relates to recycled water treatment, in particular to a preparation method of an organic flocculation decolorizing agent. Background technique [0002] The use of reclaimed water is of great significance to solving the contradiction between urban water supply and demand and saving traditional water resources. Therefore, as a new water source, it is increasingly valued by people. However, in the current reclaimed water treatment process, due to the complex composition of the influent water, certain chemical substances contained in it lead to excessive color of the influent water. For these chemical substances, after using the traditional reclaimed water treatment process, it is difficult for the color of the effluent supplied to users to meet the standard requirements. In the past, the development of decolorizing agents in water treatment seldom focused on reclaimed water as the research object, and the currently commonly used decolorizin...

AI Technical Summary

Problems solved by technology

However, in the current reclaimed water treatment process, due to the complex composition of the influent water, which contains certain chemical substances, the color of the influent water is too high

For these chemical substances, after using the traditional reclaimed water treatment process, the color of the effluent supplied to users is difficult to meet the standard requirements

In the past, the research and development of decolorizing agents in water treatment seldom focused on reclaimed water, and the currently commonly used decolorizing agents have disadvantages such as complicated production procedures, high cost, and small flocs formed in the flocculation stage, which are difficult to clarify.