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Mas Agus Mardyanto
Department of Environmental Engineering, Sepuluh Nopember Institute of Technology (ITS)
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Environmental Science

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Design of the wastewater treatment system of an office building Rizky Raissha; Mas Agus Mardyanto
Sustinere: Journal of Environment and Sustainability Vol. 1 No. 1 (2017): pp. 1 - 62 (June 2017)
Publisher : Center for Science and Technology, IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22515/sustinere.jes.v1i2.15

Abstract

The MIPA Tower office building, an eleven-storey building, which is located in the area of Institut Teknologi Sepuluh Nopember Surabaya, is under construction. The building will be utilized for offices, classrooms, and laboratories. In the operation of the building, domestic and laboratory wastewater will be produced. This wastewater contains compounds that can pollute the environment. A design of domestic and laboratory wastewater treatment system is conducted. The system comprises of a neutralization tank, a grease trap, an equalization tank, an anaerobic filter, and an activated carbon and silica sand filter. The steps of the design are (i) collecting primary data and secondary data, (ii) calculating the engineering design, (iii) drawing the Detailed Engineering Design (DED), and (iv) calculating the bill of quantity and budget. The conclusion of this design is that the treatment plant will treat a mixture of domestic and laboratory wastewater. The dimension of each unit is as follows: (i) the neutralization tank (Ø = 0.65 m, H = 0.43 m), (ii) the grease trap (4 m x 2 m x 1 m), (iii) the equalization tank (10.5 m x 5.5 m x 2.5 m), (iv) the septic tank (4.5 m x 4 m x 2.5 m), (v) the six-compartment anaerobic filter (2.25 m x 4 m x 2.5 m), and (vi) the filter with activated carbon (H = 50 cm), silica sand (H = 150 cm), and gravel (H = 10 cm), with the diameter of the tank is 1.5 m.
Drainage system evaluation and control of inundation in campus and housing areas of ITS, Surabaya Eldo Fikri Alvin; Mas Agus Mardyanto
Sustinere: Journal of Environment and Sustainability Vol. 1 No. 2 (2017): pp. 63 - 143 (December 2017)
Publisher : Center for Science and Technology, IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22515/sustinere.jes.v1i2.18

Abstract

The campus area of the Sepuluh Nopember Institute of Technology (Institut Teknologi Sepuluh Nopember/ITS) and its housing complex are often inundated during heavy rain. This is primarily due to the relatively flat topography of the campus area. Moreover, sediment accumulation in some existing drainage channels reduces their optimum capacity. Therefore, an evaluation of ITS’s drainage system needs to be conducted.This evaluation was carried out in stages with the following steps: identification of existing problems, collection of primary and secondary data, literature review, calculation of the capacity of existing channels, runoff estimation, and analysis of existing retention ponds. The primary data included flow direction, channel slope and dimensions, and sediment thickness in the channels. The secondary data comprised rainfall intensity, the ITS master plan, and land use data. The calculations included engineering design, the bill of quantity (BOQ), and budget estimation. Additionally, a standard operating procedure for drainage system maintenance was suggested to optimize channel performance.From the analysis, it was found that the maximum daily rainfall is 136.09 mm/day for a 5-year return period and 159.19 mm/day for a 10-year return period. Inundation around ITS occurs due to several factors. Some drainage channels are not connected to each other, preventing smooth water flow to the receiving water body (river). Additionally, certain channels were not constructed with the proper slope, further contributing to drainage issues. Road inundation is also caused by the absence of street inlets, preventing water from flowing into the side channels.It can be concluded that in some areas, the number of secondary drainage channels and box culverts needs to be increased, the slope of certain channels should be adjusted, and a total of 288 street inlets must be constructed throughout the planning area.
Co-Authors Eldo Fikri Alvin Rizky Raissha