Effects of pH and coagulant dosage on the removal of turbidity and suspended solids from domestic wastewater using copperas
Hamidi Abdul Aziz1, 2*, Wan Izatul Saadiaah Wan Kamar1, Siti Fatihah Ramli1
Copperas (FeSO2.7H2O) used as coagulant to treat turbidity and suspended solids in domestic wastewater.
The copperas is a by-product of an ilmenite processing industry.
The optimum dosage for copperas was 150 mg/L at optimum pH of 9.
Copperas can remove 85% turbidity and 90% SS at optimum pH and coagulant dosages.
It can be applied to treat other wastewaters such as textile wastewater and industrial wastewater.
Treatment of domestic wastewater is essential because the discharge of untreated wastewater may pose serious environmental problems. Physicochemical treatment such as coagulation/flocculation is one of the most applied methods worldwide. Alum and ferric chloride are the most common coagulants used for the treatment of wastewater and industrial effluent. This study investigated the potential use of copperas (FeSO2.7H2O) in removing turbidity and suspended solids from the domestic wastewater. The copperas was taken as a by-product from one of the ilmenite processing industries in Malaysia. The effects of pH and dosage on the removal efficiencies were evaluated in standard jar test experiments. The optimum conditions occurred at copperas dosage of 150 mg/L and pH of 9, with 85% and 90% removal respectively, for turbidity and suspended solids. It can be applied to treat other wastewaters such as tannery wastewater, laundry wastewater, textile wastewater, and industrial effluent.
To cite this article: Abdul Aziz H, Wan Kamar WIS, Ramli SF. Effects of pH and coagulant dosage on the removal of turbidity and suspended solids from domestic wastewater using copperas. Journal of Desalination and Water Purification 2019;15:7-11.