The influence of groundwater level on water disposal systems in hotels and apartments in Semarang city

Syahputra, Benny; Kiono, Berkah Fajar Tamtomo; Sudarno, S.

doi:10.1063/5.0140140

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Wastewater from the hotel and apartment buildings consists of black water and gray water [17]. Black water comes from human feces, while gray water comes from bathtubs, sinks, floor drains, kitchens, and washing machines.…”

Section: Reuse Of Recycled Water From Gray Watermentioning

confidence: 99%

Water Conservation Model in Hotel and Apartment Building in Semarang City, Indonesia

Syahputra

2023

GEOMATE

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Environmental problems such as land subsidence, seawater intrusion, and groundwater contamination are the impacts of groundwater exploitation in hotel and apartment buildings in the city of Semarang. This research was conducted on ten buildings using a four-model approach to water conservation, which includes rainwater harvesting, water-saving plumbing fixtures, the reuse of recycled water from gray water, and condensate water from air conditioners in buildings. The results showed that rainwater harvesting contributes 13.12-166.77% of the total building water demand, depending on the size of the catchment area of the building. Rainwater harvesting can be combined with infiltration wells, but the research location is relatively shallow; the groundwater depth is less than 1 meter, so infiltration wells cannot be applied. The use of water-saving plumbing fixtures accounts for 6.4% of the total building water demand. Likewise, with gray water, the reuse of recycled water from gray water contributes 59.87-69.71% of the total building water demand. Gray water is treated at STP, then flows to RWT, then flows to WTP to be treated. Gray water should not be mixed with black water so that the treatment load at the STP and WTP is not too large. Finally, condensate water from air conditioners in buildings is no less important to note; although it contributes only 1.43% of the total building water demand, it plays a role in creating green buildings.

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Section: Reuse Of Recycled Water From Gray Watermentioning

confidence: 99%

Water Conservation Model in Hotel and Apartment Building in Semarang City, Indonesia

Syahputra

2023

GEOMATE

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“…Changes in land use in urban areas result in damage to water catchment areas. The water catchment area in Semarang City has a low absorption capacity [1]. As a result of global climate change, Indonesia will experience changes in rainfall characteristics.…”

Section: Introductionmentioning

confidence: 99%

The potential of infiltration wells to reduce runoff in apartment and hotel buildings in Semarang City

Syahputra,

Satrio,

Adi

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Besides being used as groundwater recharge, infiltration wells function as runoff controllers. This study aims to analyze the runoff of apartment and hotel buildings in Semarang City. The method used to calculate rain intensity is the Mononobe method. The value of the flow coefficient is calculated using the Hassing method, while the standard used to calculate infiltration wells is SNI 03-2453-2002 concerning infiltration wells. Based on groundwater depth and soil permeability, seven apartment and hotel buildings are not suitable for implementing infiltration wells, namely: H2, H3, H4, H5, H6, H8, and H10. The remaining three buildings are feasible, namely: H1, H7, and H9. Runoff discharges in apartment and hotel buildings in Semarang City that are eligible to use infiltration wells are H1 at 0.13 m3/sec, H7 at 0.18 m3/sec, and H9 at 0.10 m3/sec. While the discharge of water that seeps through the infiltration wells with a minimum permeability of 0.168 m/hour is 1.71 m3/hour and the value of the discharge of water that seeps through the infiltration wells with a maximum permeability of 5.083 m/hour is 51.89 m3/hour.

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The influence of groundwater level on water disposal systems in hotels and apartments in Semarang city

Cited by 2 publications

References 9 publications

Water Conservation Model in Hotel and Apartment Building in Semarang City, Indonesia

Water Conservation Model in Hotel and Apartment Building in Semarang City, Indonesia

The potential of infiltration wells to reduce runoff in apartment and hotel buildings in Semarang City

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