Effluent Treatment Plant (ETP) is used to purify the waste water produced during dyeing knitted fabrics. Nowadays, people are trying to protect the environment from the harmful effect of effluent. Different waste water has different characteristics.
The followings are the procedures of effluent treatment:
Effluent from different manufacturing industry
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Primary Filtration
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Cooling and Mixing
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Neutralization (by acid or alkali)
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Chemical Co-agulation
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Settling and Separation of Sludge
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Pressure Filtration
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Discharge
Primary Filtration: Primary filtration is the first step of effluent treatment plant. It removes solid waste particles.
Cooling and mixing: Different types of effluent are mixed and cooled down with the assistance of motor.
Neutralization tank: Effluent is transferred to neutralization tanke for neutralization by pump. Acid or alkali is used to neutralize the effluent. A PH meter placed inside the neutralization tank can show PH value of effluent.
Co-agulant: Co-agulant is added with the effluent.
Settling Tank: Effluent is separated from water in settling tank.
Pressure Filter: A certain amount of pressure is created for filtration.
Discharge to Drain: the effluent having been purified can be discharge to environment directly.
