Open AccessPENURUNAN KADAR BESI DAN KROMIUM LIMBAH CAIR LABORATORIUM TEKNIK LINGKUNGAN DENGAN PENGENCERAN, KOAGULASI DAN ADSOBSI
Author(s) -
Indah Nurhayati,
Sela Vigiani,
Dian Majid
Publication year - 2020
Publication title -
ecotrophic
Language(s) - English
Resource type - Journals
eISSN - 2503-3395
pISSN - 1907-5626
DOI - 10.24843/ejes.2020.v14.i01.p07
Subject(s) - wastewater , chromium , chemistry , adsorption , nuclear chemistry , volumetric flow rate , dilution , activated carbon , waste management , pulp and paper industry , metallurgy , environmental engineering , environmental science , materials science , physics , organic chemistry , quantum mechanics , engineering , thermodynamics
The purposes of this study is to examine the effect of flowrate and operating time on decreasing Fe and Cr, assessing the quality of wastewater after being treated with dilution, neutralization, coagulation and adsorption especially for the parameters Cr, Fe and pH. The variables in this study are the flow of waste water that is 100 mL / min and 140 mL / min, operating time for 60 minutes. The adsorption process is carried out continuously with down flow. Adsorbents in the form of activated zeolite and activated carbon are arranged in stages in a PVC reactor. The results of this study are 100 ml/min discharge can reduce total Fe by 99.9% from 1,767 mg/L to 0,971 mg/L and total chromium 99.2% from 48.7 mg/L to 0,39 mg/L. 140 ml/minute discharge can reduce total Fe 99.9% from 1,767 mg/L to 0.99 mg/L and total chrome 99% from 48.7 mg/L to 0.45 mg/L. Waste water quality, especially for the parameters of Cr, Fe and pH, after the treatment process have met the quality standard in accordance with Minister of Environment Regulation No. 5 of 2014 concerning Wastewater Quality Standards.