Ferrous sulfate is a commonly used sewage treatment agent, which can effectively remove pollutants in sewage and improve water quality. In wastewater treatment, the use of ferrous sulfate can help remove harmful substances such as heavy metal ions, organic pollutants, and ammonia nitrogen. This article will describe the properties of ferrous sulfate, the mechanism of sewage treatment, and its use.
The chemical formula of ferrous sulfate is FeSO4, and it is a colorless crystalline solid. Ferrous sulfate is soluble in water, and its solution is light green. It is easy to oxidize in the air to form ferrous sulfate copper ammonia complex, and gradually lose its activity. Ferrous sulfate is reducible and can react with oxidizing pollutants to remove pollution.
Ferrous sulfate is used in wastewater treatment to remove pollutants mainly through oxidation, precipitation, and complexation.
1.Oxidation:Ferrous sulfate can react with oxidizing contaminants to reduce them to harmless substances. For example, ferrous sulfate can oxidize ferric ions (Fe2+) to ferric ions (Fe3+), allowing iron ions to combine with hydroxides to form iron(III) oxide precipitates, which in turn remove heavy metal ions.
2.Precipitation:Ferrous sulfate can combine with hydroxides to form precipitate, which can effectively remove suspended particles, colloids and other small pollutants. This sedimentation helps to purify the water and reduce turbidity.
3.Complexation:Ferrous sulfate reacts with ammonia to form complexes, which can effectively remove ammonia nitrogen from water.
Ferrous sulphate is suitable for wastewater treatment in the following cases:
1.Heavy Metal Removal:Ferrous sulfate can react with heavy metal ions to form a precipitate that precipitates, thereby removing heavy metal contamination.
2.Ammonia nitrogen removal:Ferrous sulfate can combine with ammonia nitrogen to form complexes, which can play a role in removing ammonia nitrogen in sewage treatment.
3.Treatment of high turbidity waters:The precipitation of ferrous sulfate can be used to treat water bodies with many suspended particles and high turbidity to remove fine suspended substances.
When using ferrous sulfate for sewage treatment, the following safe use measures should be noted:
1.Avoid inhalation:Ferrous sulfate will produce dust during processing and handling, so wear a protective mask and gloves to avoid inhalation or contact**.
2.Sealed storage:Ferrous sulfate should be stored tightly sealed and placed in a cool, dry and well-ventilated place, away from fire and oxidants.
3.Avoid mixing with other chemicals:Ferrous sulfate mixed with strong oxidants such as potassium permanganate will produce a violent reaction and should be avoided.
4.Fair Use and Disposal:The amount of ferrous sulfate should be reasonably controlled according to the actual situation, and the waste liquid after use should be safely disposed of in accordance with relevant regulations.
Ferrous sulfate is a commonly used sewage treatment agent, which has oxidation, precipitation and complexation effects, and can effectively remove harmful substances such as heavy metals and ammonia nitrogen. The rational use of ferrous sulfate and the observance of safe use measures can help to improve the effectiveness of sewage treatment and improve water quality.