Pengolahan Limbah Cair Rumah Sakit secara Sonochemical

Abstract

Hospital as a service provider has an important role in human life, especially for people who are experiencing physical and mental disorders. Various types of diseases and therapies performed in hospitals has made it as one of the producers of hazardous and infectious waste that requires special handling and processing so as not to pollute the water, soil, and air environment. Hospital wastewater treatment was conducted to determine the ability of sonochemical method to reduce level of Chemical Oxygen Demand (COD) and determine the optimum conditions of the parameters used by the design of Response Surface Methodology Box-Behnken. The parameters that affected this process was the concentration of hydrogen peroxide (H 2 O 2), pH, and reaction time. The Waste used was taken from the waste water treatment plant in Zainoel Abidin General Hospital in Banda Aceh with COD value 260.65 ppm. The optimum conditions of this treatment process occured at pH 2, H 2 O 2 concentration 500 ppm, and reaction time 119.98 minutes with reduction of COD was 81.88%.

Efficiency of FeSO4.7H2O as a Coagulant on Chromium Hexavalent Removal Using Coagulation-Flocculation Process: Optimization Using Response Surface Methodology

“…Coefficient Variation (CV) is another metric that may be used to determine whether or not a model is significant by comparing the estimated standard error to the average value of the experimental model. The CV value should not be greater than 10% in order for the model to be considered significant [36]. The fewer values of CV value, correlates with the measurement precision of the analysis technique.…”

“…The insignificant lack of fit value indicates that the compiled model is good enough because the compiled model must be fit. Based on the data acquired in the ANOVA test, a Fvalue 4.19 and p-value 0.1001 was produced, which indicated that the lack of fit was not significant relative to pure errors [36]. So, it can be concluded that this model can be used to describe response data for Cr (VI) removal efficiency, and the model used is suitable for predicting the conditions of the coagulation-flocculation process that result in optimum Cr (VI) removal efficiency.…”

Abundance and phenotypic-genotypic analysis of antibiotic-resistant Escherichia coli isolated from wastewater of the Zainoel Abidin Hospital, Banda Aceh, Indonesia

“…Hospital discharges increase proportionally to the need for health services every year continuously. WWTP has been applied to hospitals in Aceh, yet not all of them function effectively or fulfill all standards (Kusuma et al 2017). Effective wastewater treatment is necessary to prevent the spread of bacteria from hospital wastewater to the environment.…”