以生物復育技術應用於潤滑油污染土壤場址

Bioremediation Technology Applied to Soil Contaminated with Lubricants

秦逸玲(Yi-Ling Cin) ； 林書羽(Shu-Yu Lin)

《土壤及地下水污染整治》 5卷4期 (2018/10) Pp. 163-173

https://doi.org/10.6499/JSGR.201810_5(4).0001

摘要

我國地下儲油槽及管線多埋設於地下，易使油槽或管線受腐蝕或其他原因造成油品洩漏污染，此類物質若意外洩漏至土壤後將迅速地滲漏至地下水中，形成廣大的污染團，並依據污染物特性、土壤結構以及場址狀況等因素，影響土壤及地下水污染情形，其中又以潤滑油污染之整治較為困難且耗時。目前土壤油品污染整治已相當普遍，包含水洗法、熱處理法、生物處理法及排土客土等整治工法，其中生物復育法（bioremediation）由於具環境友善性及經濟可行性，已成為一極具吸引力之整治方法，本研究將探討以生物處理技術進行受潤滑油污染土壤整治，並評估以商業藥劑（Terramend及anaerobic baffled reactor[ABR]）作為生物營養源之整治成效。本研究成果包含：（1）Bencht est以濃度6,780mg/kg之total petroleum hydrocarbons（TPH）污染土壤作為實驗起始濃度，使用ABR作為營養源之批次處理成效較Terramend營養源佳，惟試驗時間持續至15週2種營養源均仍無法降解至土壤管制標準值（1,000mg/kg）以下。（2）Bench test以濃度6,780mg/kg之TPH污染土壤作為實驗起始濃度，營養源使用不同之添加方式（一次性添加、二次性添加），以二次性添加之處理成效較佳，惟試驗時間持續至15週均仍無法降解至土壤管制標準值（1,000mg/kg）以下。（3）Pilottest以bench test試驗結果較佳之ABR作為營養源，並以濃度2,000mg/kg及3,000mg/kg之TPH污染土壤作為實驗起始濃度，該試驗均能於8週內將TPH濃度降至土壤管制標準值（1,000mg/kg）以下，且添加營養鹽比例越高，能越快達到整治目標。

關鍵字

土壤整治 ； 生物復育 ； 潤滑油

並列摘要

Most of Taiwan's underground oil storage tanks and pipelines are buried underground, which can corrode the oil tanks or pipelines, causing oil leakage and contamination. If plutonium accidentally leaks into the soil, it quickly infiltrates into the groundwater and causes massive contamination. Contaminant characteristics, soil structure, site conditions, and other factors affect soil and groundwater contamination. Above all, treating contamination caused by lubricants is difficult and time consuming. At present, remediation of soil contaminated by oil is very common and involves water washing, heat treatment, biological treatment, soil removal, and other soil remediation techniques. Among all, bioremediation is an environmentally friendly and economically feasible technique, which is an attractive remediation technique. This study explored the use of biological treatment techniques in the remediation of oil-contaminated soil and evaluated the effectiveness of remediation using commercial medicines (Terramend and anaerobic baffled reactor [ABR]) as biological nutrient sources. The results of this study were obtained from: (1) A bench test perfumed to treat soil contaminated with total petroleum hydrocarbons (TPH) at a concentration of 6,780 mg/kg. Batch treatment using ABR as a nutrient source gave better results than Terramend. However, the test period lasted up to 15 weeks with 2 nutrient sources. None of the results could reach below the soil control standard value (1,000 mg/kg); (2) a bench test perfumed to treat soil contaminated with TPH at a concentration of 6,780 mg/kg. Different methods were used for adding nutrient sources (single and double addition). The treatment effect of double addition was better, but the test results could not reach below the soil control standard value (1,000 mg/kg) within 15 weeks; and (3) a pilot test using ABR as a nutrient source. The test provided better results than bench tests. The targets were soils contaminated by TPH at concentrations of 2,000 mg/kg and 3,000 mg/ kg. This test could reduce TPH to lower than that of the soil control standard (1,000 mg/kg) within 8 weeks. Considering a soil control standard of 1,000 mg/kg (or less), higher rates of nutrients resulted in faster remediation of TPH in the target soil.

並列關鍵字

soil remediation ； bioremediation ； lubricants