Repository Universitas Pakuan

Detail Karya Ilmiah Dosen

Zaenal Abidin, Ani Iryani, Ade Heri Mulyati

Judul : COMPARISON OF COAGULAN PAC AND ALUM AS A INDUSTRIAL WASTE WATER IN PT NALCO INDONESIA
Abstrak :

Waste is the residue of an activity or the production process that can make the environment damaged, dangerous, and pollutied because of its nature and concentration. An important step in waste water treatment to produce clean water is the process of coagulation by the addition of coagulant. The jar test can be done to determine the optimum dose of waste water coagulation proces. The study was conducted to determine the ability of the PAC and Alum coagulants in treating waste of PT. Nalco Indonesia with several parameters such as turbidity, pH, COD, TDS, and TSS. The waste water sample is introduced into 4 cups of 1 litre each. Then coagulants with various concentrations of PAC, namely, 1000 ppm, 1500 ppm, 2000 ppm, 2500 ppm, 3000 ppm, 3500 ppm, 4000 ppm are added to cups. The same action was also performed by adding the coagulant of alum with the same concentration. The jar test equipment is operated at the speed of 100 rpm for 1 minute (coagulation process) followed by slow stirring at 40 rpm for 10 min (flocculation process). The stirring was stopped for 10 minutes to make the flock settle (sedimentation). The sample of water from the jar test result are tested according to the parameter of turbidity, pH, COD, TDS and TSS. The waste water of PT. Nalco Indonesia before jar test exceeds the quality standard of parameters except for the TDS. After the test of jar test waste water of PT. Nalco Indonesia has met the quality standard of parameters except COD. The production cost of PAC in the dose of 2.500 ppm is more efficient than the dose of 3.000 ppm of alum per month in the 30.000 Liters of waste water discharge. The use of PAC coagulant is 500 ppm less than alum and it is more economical because it can save Rp. 345.000,- per month.

Tahun : 2012 Media Publikasi : Jurnal Nasional Blm Akreditasi
Kategori : Jurnal No/Vol/Tahun : 1 / 1 / 2012
ISSN/ISBN : 2012xx
PTN/S : Universitas Pakuan Program Studi : KIMIA
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