Application of magnesium hydroxide in regulating water quality and removing hydrogen sulfide

Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)2. It is a white powder with adsorption, precipitation, flocculation and other properties. In water quality conditioning, magnesium hydroxide is mainly used to remove hydrogen sulfide.

wastewater treatment

Hydrogen sulfide is a toxic gas that is corrosive and harmful to human health. In water, hydrogen sulfide reacts with water to form sulfate and hydrogen gas. Sulfates can cause water turbidity and affect water use.

Magnesium hydroxide reacts with hydrogen sulfide to form magnesium sulfide precipitate. Magnesium sulfide is a non-toxic substance that can precipitate at the bottom of the water to achieve the purpose of removing hydrogen sulfide.

The reaction of magnesium hydroxide to remove hydrogen sulfide is as follows:

Mg(OH)2 + H2S → MgS + 2H2O

The advantages of magnesium hydroxide for removing hydrogen sulfide are as follows:

The reaction principle is simple and the operation is convenient.

The removal efficiency is high and can reach more than 99%.

The generated precipitate is non-toxic and will not cause pollution to the environment.

The application range of magnesium hydroxide to remove hydrogen sulfide is as follows:

Industrial wastewater treatment: used to treat industrial wastewater containing hydrogen sulfide, such as papermaking wastewater, oil refining wastewater, chemical wastewater, etc.

Domestic sewage treatment: used to treat domestic sewage containing hydrogen sulfide, such as municipal sewage, industrial park sewage, etc.

The specific process for removing hydrogen sulfide from magnesium hydroxide is as follows:

Dosing method: Magnesium hydroxide can be added by dosing tank dosing, spray dosing, aeration dosing, etc.

Dosage: The dosage of magnesium hydroxide is determined according to the concentration of hydrogen sulfide in the water. Generally, when the hydrogen sulfide concentration is 1mg/L, the dosage is 0.5-1g/m3.

Reaction time: The reaction time of magnesium hydroxide and hydrogen sulfide is generally 1-2 hours.

Magnesium hydroxide removal of hydrogen sulfide is an effective method in water quality regulation and has broad application prospects.

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