SAPS조의 버섯퇴비에서 석회석 첨가가 수처리에 미치는 효과
Effect of Limestone Addition to Mushroom Compost during Water Treatment in SAPS
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초록
본 연구에서는 SAPS조에 흔히 사용하는 버섯퇴비(MC)와 모래 크기 석회석을 혼합한버섯퇴비(MCL)를 두 개의 컬럼에투입하고 9주간 광산배수를 유입시켜 수질을 비교했다. 버섯퇴비층은 중화능력이 없어서 Al, Fe2+ 및 Mn 성분을 통과시켰다. Al은자갈 석회석층에서 침전하여 석회석의 용해를 억제했다. 모래 석회석 혼합 버섯퇴비층은 pH를 5.90으로 증가시켜 Al을 버섯퇴비층에 침전시켰다. 9주 동안 자갈 석회석 층의 빈공간이 유지되었고 pH는 6.58 그리고 알칼리도는 131.09 mg/L CaCO3으로 측정되었다. 버섯퇴비층내 모래 석회석은 pH를 증가시켜서 Al을 제거해서 자갈 크기 석회석 층의 중화기능을 길게 유지하였다.
Abstract
In this study, mushroom compost (MC) and mushroom compost mixed with sand-sized limestone (MCL), commonly used in successive alkalinity producing systems (SAPS), were loaded into two columns and introduced into acid mine drainage (AMD) for nine weeks to compare water quality. The mushroom compost had no neutralizing ability and, therefore, did not remove the components of Al, Fe2+, and Mn. Aluminum was continuously removed in the gravel-sized limestone layer, thereby reducing the neutralization function of limestone. The mushroom compost with sand limestone increased the pH 3.52 to 5.90 and had Al deposited in the compost layer. For nine weeks, the space of the limestone layer was maintained, pH was measured as 6.58, and alkalinity was measured as 131.09 mg/L CaCO3. Sand limestone in the mushroom compost layer thus increased pH and served as a filter for Al, thus maintaining the neutralization function of the gravel-sized limestone layer for a long time.
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