EFFECT OF GAMMA IRRADIATION ON TEXTILE WASTE WATER

This paper studies the use of gamma irradiation for textile waste water treatment. Prior to irradiation, the raw wastewa ter was diluted using tap water to targeted concentration of COD 400 mg/l. The sample was irradiated at selected dose between the ranges of 2kGy to 100kGy. The results showed that Irradiation was effective in removing the highly colored refractory organic pollutants. The COD removal at lowest dose, 2kGy is about 310 mg/l. Meanwhile, at highest dose, 1 00kGy the COD reduced to 100mg/l. The degree of removal influenced by the dose introduced during the treatment pro cess. As the dose increased, higher removal of organic pollutant was recorded. On the other hand, other properties of t he wastewater such as pH, turbidity, suspended solid, BOD and color shows tremendous changes as the dose increases. This shows the concentration of pollutants and dose of irradiation applied are directly proportional to each other. ABSTRAK Kertas kerja ini membincangkan tentang penggunaan teknik penyinaran gamma untuk merawat air sisa buangan tekstil. Sebelum proses penyinaran dilakukan, sampel air buangan dicairkan dengan menggunakan air paip untuk mendapatk an kepekatan COD 400mg/l yang disasarkan. Sampel kemudiannya disinarkan pada dos yang dipilih diantara 2kGy hin gga 100kGy. Hasil kajian menunjukkan bahawa teknik penyinaran gamma berkesan dalam menyingkirkan bahan pence mar organik refraktori yang tinggi keamatan warnanya. Pada dos penyinaran terendah iaitu 2kGy nilai penyisihan CO D adalah 310mg/l. Manakala pada dos penyinaran tertinggi iaitu 100kGy nilai COD berkurang menjadi 100mg/l. Hasi