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Journal : Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah

Pengaruh Ortofosfat dan Klorinasi Terhadap Korosi dan Mikroorganisme pada Cooling Water System di Unit Utilitas-2 PT. Pupuk Iskandar Muda Supriadi, Herri; Zaki, Muhammad; ., Syaubari
Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah Vol 4, No 4: November 2017
Publisher : Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah

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Abstract

ABSTRACTCorrotion inhibitors and the growth of microorganisms that occur in the cooling water system can affect water quality, which causes an effect on the process temperature and temperature of the equipment. This study aims to study the effect of orthophosphate and chlorination on corrosion and microorganisms on cooling water systems, using materials such as 85% water basin cooling tower, orthophosphate [H3PO4] as 60% corrotion inhibitor, calcium hypochlorite [Ca (OCl)] as a disinfectant dissolved into water so that it becomes hypochlorite acid (HOCl). The fixed variable used is operating time every 3 hours, atmospheric cooling tower pressure, pump pressure 15 kg/cm2, feed temperature 300C, reverse temperature 400C, and 25 liter basin volume. The independent variables were orthophosphate (H3PO4) concentration of 85%: 12, 15, 18, 21, and 24 ppm, then the concentration of calcium hypochlorite [Ca(OCl)2] 60%: 53, 57, 61, 65, and 69 ppm. The results showed that the lowest corrosion value of orthophosphate corrosion inhibitor was 0.0199 grams, the highest value of microorganisms was 1000, the lowest pH value was 3.39 and the lowest residual chlorine value was 0.09 ppm while the highest use of calcium hypochlorite was 0 12 grams, the highest value of microorganisms is 0, the lowest pH value is 3.39 and the highest residual value of chlorine is 0.86 ppm in the cooling water system.
EVALUASI KINERJA PENGOLAHAN LIMBAH CAIR RUMAH SAKIT JIWA (RSJ) BANDA ACEH Nurmala, Putri; ., Suhendrayatna; Zaki, Muhammad
Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah Vol 3, No 2: Mei 2016
Publisher : Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah

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Abstract

Performance evaluation of liquid waste treatment psychiatric hospitals of Banda Aceh. The management of liquid waste is part of the hospital that serves to protect the public from the dangers of environmental pollution, so it takes a good handling and right through the installation of wastewater treatment (IPAL). This research aims to know the methods of the management and processing of liquid waste conducted by RSJ Banda Aceh, to know the management system and waste liquid waste RSJ Banda Aceh with the Raw quality of the applicable Legislation and regulations and to know the conditions of the environment around the area of RSJ Banda Aceh, before and after the existence of the management of liquid waste. The research sample is liquid waste RSJ Banda Aceh before being processed (inlet), liquid waste after being processed (outlet), drainage and wells. Parameters measured are the BOD (mg/L), COD (mg/L), pH, TSS (mg/L) and temperature (oC) compared to KEPMEN LH No. 58, in 1995 about the raw quality of liquid waste for the activities of the hospital. The analysis of the data used for the determination of the status of the quality of waste water  Pollution Index method (IP) and data analysis using SPSS version 16.0 questionnaire. The results showed that wastewater RSJ Banda Aceh is in the category of light impurities with PIj values of 2.457, so as not to endanger the population around the area of RSJ Banda Aceh.Keywords: Wastewater Management, Wastewater liquid of Hospital, Wastewater Treatment by RSJ Banda Aceh 
PEMANFAATAN ABU DASAR INSINERATOR SEBAGAI BAHAN BANGUNAN Khairuna, Wilda; ., Suhendrayatna; Zaki, Muhammad
Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah Vol 4, No 4: November 2017
Publisher : Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah

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Abstract

This research is purposed to study the mixture ratio that can be used to produce mortar which meets SNI standard, by substituting a part of sand with bottom ash collected from RSUD Dr.Zainoel Abidin incinerator in the mixture. The mixture planning was done according to practical instruction ASTM C 305, and compressive strenght test on the mortar produced was performed. The mixture ratio of cement: sand: ash that was used was 1:3:1, 1:2:2, and 1:1:3. The testing materials were 63 cubes with dimension 5 cm × 5 cm × 5 cm. The compressive strenght test  result after 28 days of mortar curing time showed that the mortar in every mixture ratio has met SNI 03-6882-2002, which is a specification of mortar for masonry work. The highest result of compressive strenght test is 18.71 MPa, which was obtained from mixture ratio 1:3:1, with addition of incinerator bootom ash by 25% of volume of sand used, but the value was decreasing as the increasing amount of incinerator bottom ash added in the mixture. The result of compression test on mortar with incinerator bottom ash addition was bigger and characteristically seemed more compact compared to mortar without ash.