[논문]공동주택 지하저수조 내 침전된 부유성 고형물의 발생원인 및 제어방안

장준영; 김주원; 김기팔; 신현상; 임병란

doi:10.15681/kswe.2023.39.2.153

[국내논문] 공동주택 지하저수조 내 침전된 부유성 고형물의 발생원인 및 제어방안
Investigating the Causes and Control Measures for Precipitated Suspended Solids in the Underground Reservoir Tank in an Apartment 원문보기

한국물환경학회지 = Journal of Korean Society on Water Environment, v.39 no.2, 2023년, pp.153 - 161

장준영 (서울과학기술대학교 환경공학과) , 김주원 (서울과학기술대학교 환경공학과) , 김기팔 ((주)케이원에코텍) , 신현상 (서울과학기술대학교 환경공학과) , 임병란 (서울과학기술대학교 환경공학과)

Abstract ▼ AI-Helper

The reservoir tank in an apartment is crucial for maintaining the quality of drinking water after it has undergone treatment. Investigating the water quality and potential contaminants in the reservoir tank is essential to ensure the safety of the drinking water. This study examined the water quality and precipitated suspended solids that accumulate at the bottom of the reservoir tanks in four apartments located in Gyeonggi province. As a result of the water quality investigation, turbidity increased proportionally to the distance from the water treatment plant (WTP) to the household. Heavy metals were also detected in the reservoir tank inlet but not in the water supplied from the WTP. The precipitated suspended solids (SS) in the reservoir tank contain high levels of heavy metals and total organic carbon (TOC). The precipitated SS mainly consists of Al, Mn, and Fe, which are expected to be a combination with turbidity-inducing substances. The X-ray diffraction (XRD) analysis revealed the presence of γ-FeO(OH), MnO2, and β-Fe2O3 in the SS. Additionally, F-EEM analysis indicates that the dissolved organic matter in the SS is mainly derived from a natural water source and microorganism activities, including metal-oxidizing bacteria and biofilms that can absorb metal ions. Based on these findings, several countermeasures can be taken to prevent the inflow of SS into the household, including regularly cleaning the reservoir tank, replacing or cleaning old pipes in the water supply system, and implementing monitoring and filtering systems to manage the SS.

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표/그림 (6)

표 Table 1. Water quality of influent and effluent of the reservoir tank in the apartment
그림 Fig. 1. Heavy metals in precipitated suspended solids at the bottom of the underground reservoir tank.
표 Table 2. Heavy metals in the precipitated suspended solids of the Site B reservoir tank
그림 Fig. 2. XRD analysis result of precipitated solids in the reservoir tank's bottom and JCPDS comparison. (a) γ-FeO(OH), (b) MnO₂, (c) β-Fe₂O₃.
표 Table 3. TOC and fluorescence analysis of turbid water
그림 Fig. 3. Comparison of organic components between turbid water and nearby stream.

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