Ecology, Environment and Conservation Paper

Vol 25, April Suppl. Issue, 2019; Page No.(107-112)

STUDY OF WASTEWATER TREATMENT OF JEANS LAUNDRY BY CHEMICAL-PHYSICAL METHODS AT LABORATORY SCALE

Atiek Moesriati and Fahriza Utami

Abstract

Jeans washing business is a business of laundering and bleaching Jeans after coloring on Jeans. The waste products from the washing process of Jeans are mostly directly discharged on bodies of water or rivers, thus polluting the environment. It is necessary to have a simple processing unit to reduce the pollutant load on Jeans washing. The objective of this research is to knowing the decrease of pollutant load in Jeans washing water wastewater. Laboratory scale studies using planned reactors. The reactor design comprises a flocculation coagulation tub, a settling tub and a filtration bath. The flocculation coagulation unit, the crankcase and filtration units are used glass reactors with sizes that adjust the discharge to treat the exwash water of the jeans. The tool used for the determination of the type of coagulant is by means of a jar test. This study was conducted in the household sanitary washing industry of Pesapen Selatan Surabaya. This study with preliminary investigators to determine the characteristics of the waste as well as the determination of the optimum dosage of alum and PAC addition. The variables used in this research are coagulant type and filter media variation. The parameters observed were COD, TSS, turbidity, and color. Overall, the treatment of jeans-washing wastewater using coagulant injection resulted well. With concentrations of 50 mg/L for PAC and Alum coagulant and 25 mg/L for mixture of both coagulants, the removal efficiency for each parameter will reach maximum.

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