跳到主要內容 :::

年度	111	專案性質	實驗性質
專案類別	模場試驗	研究主題	整治
申請機構	朝陽科技大學	申請系所	環境工程與管理系
專案主持人	程淑芬	職等/職稱	教授
專案中文名稱	油污染土壤綠色整治及創造循環經濟效益
中文關鍵字	生物整治,植生復育,多孔性濾料,地下水,砷移除
專案英文名稱	Green remediation of oil-contaminated soil and creation of circular economic benefits
英文關鍵字	bioremediation, phytoremediation, porous filter media, groundwater, arsenic removal
執行金額	2,700,000元
執行期間	2022/5/20 至 2023/4/30
計畫中文摘要	本計畫主要包括二個部分。第一部分為『油污染土壤生物復育技術』的成效驗證；第二部分為『油污染土壤再生多孔性材料處理富砷地下水源技術』的開發。 在油污染土壤生物復育技術方面，本計畫結合國內最主要的油品生產公司中油公司探採所及油銷部共同合作，透過模場試驗驗證油品污染之生物整治技術成效，並建立操作參數。本計畫生物整治技術涵蓋微生物整治及植生復育整治。首先透過盆栽試驗設計，分為原生菌種試驗組、油分解菌試驗組、植生試驗組、油分解菌結合植生試驗組。此外生物炭具有提高土壤透氣性，促進植物根系發展的功能，是土壤生物復育所需要的元素，因此將其結合生物整治進行試驗。本計畫選擇培地茅、香茅兩種植物進行植生復育試驗。藉由試驗結果評估各種處理技術之改善成效。釐清植生復育中植物種植對改善成效之貢獻。透過盆栽試驗結果篩選最可行有效之改善方法，進行現地試驗，驗證生物復育技術之實場成效。此外，透過植生復育產品再利用用途之開發，使植生復育在土壤污染整治之外，創造循環經濟效益。 在油污染土壤再生多孔性材料處理富砷地下水源技術開發方面，研究團隊過去研究發現旋轉窯結圈石對砷有很強的吸附去除能力。因此，本計畫進行各種結圈石粒徑之砷吸附試驗，探討其對砷之移除能力。並模擬結圈石之燒結條件，調整原料配比，燒結對砷具有較高移除能力之多孔性材料，做為富砷地區地下水源除砷資材。 盆栽試驗結果顯示，種植培地茅可增加TPH降解率達20%~30%。在種植培地茅植生復育下大部分生物容易分解的TPH在6個月內可以分解。在現地試驗結果顯示，土壤中TPH風化程度會影響培地茅生長。風化土壤區培地茅的生質產量是新鮮土壤區的4.7倍。添加生物炭有助於培地茅的生長，新鮮土壤區添加生物炭之培地茅產量是沒有添加生物炭的1.63倍；風化土壤區是1.56倍。以培地茅進行TPH污染土壤之植生復育，每公頃每年生產之培地茅植體可以捕捉29.12公噸的碳元素，相當於106.8公噸二氧化碳。土壤添加2.5%生物炭，施用一次每公頃可儲存206.25公噸的二氧化碳。以培地茅植體萃取精油或做為燃料，每年每公頃之培地茅可提取1.16公噸精油，若作為燃料使用，可提供1160.43 GJ熱能。 添加生物炭對陶粒吸附砷的能力有很大的增強作用，不僅吸附力強，吸附容量也增加。後續可持續探討其最佳配比以及特性，並進行模場試驗，評估其實場應用之可行性。
計畫英文摘要	This project mainly includes two parts. The first part is "TPH-contaminated soil biological remediation technology"; The second part is "TPH-contaminated soil regenerating porous material to treat arsenic-rich groundwater technology development". In terms of the biological remediation technology of TPH-contaminated soil, this project will cooperate with CPC Corporation, Taiwan, the most important oil production company in Taiwan. Establish bio-remediation technology for TPH pollution through field tests and verify its effectiveness. The biological remediation technology of this project covers microbial remediation and phytoremediation. First, through the pot experiments, including the native bacteria test group, the TPH decomposing bacteria test group, the phytoremediation test group and the oil decomposing bacteria combined phytoremediation test group. Evaluate the improvement effects of various processing technologies based on the test results. Clarify the contribution of plant cultivation to improving the effectiveness of phytoremediation. Screen the most cost-effective and effective improvement methods based on the results of pot experiments, conduct field trials to verify the field effectiveness of the biological remediation technology, and establish local operating parameters. In this project, two plants, Vetiver and Lemongrass, will selected for planting experiments. Among them, cultivated field grass and citronella have the feasibility of extracting essential oils. For the remaining plant residues, this plan will prepare it into biochar. Biochar has the function of improving soil permeability and promoting the development of plant roots. It is an element required for soil biological remediation. Therefore, its application in biological remediation should have the potential to improve the effectiveness of biological remediation. Through the development of reuse of phytoremediation products, phytoremediation can be achieved in addition to soil remediation and create circular economic benefits. Regarding the development of technology development for regenerating porous materials from oil-contaminated soil to treat arsenic-rich groundwater sources. In the past, the research team tested the adsorption capacity of various porous materials for arsenic and found that the rotary kiln ring stone has a strong adsorption and removal capacity for arsenic. Therefore, this project analyzes the characteristics of ring stones and analyzes the mechanism of arsenic removal by ring stones, and through the field test, select arsenic-rich areas and groundwater wells for arsenic removal test. Evaluate the removal capacity, adsorption capacity. Assess the feasibility of using ring stones as arsenic removal technology of groundwater source. In addition, this project simulates the sintering conditions of ring stones and prepares porous recycled materials with oil-contaminated soil. Develop porous materials with the ability to remove arsenic as a technology for removing arsenic from groundwater sources in arsenic-rich areas. The results from the pot experiment showed that the cultivation of vetiver could increase the degradation rate of TPH by 20%~30%, and most of the biodegradable TPH could be decomposed within 6 months under the planting of vetiver. For the field test, the results showed that fresh TPH-contaminated soil would inhibit the growth of vetiver. The biomass production of vetiver in weathered soil was 4.7 times that in the fresh soil area. In the fresh soil area, the yield of vetiver biomass in biochar added soil was 1.63 times than that without adding biochar, and it was 1.56 times in the weathered soil area, indicating that the addition of biochar promoted the growth of vetiver. Planting vetiver after applying 2.5% biochar to the weathered soil, about 72.8 tons of vetiver could be produced per hectare per year. According to the content calculation, 29.12 tons/yr/ha of carbon could be captured by planting vetiver, which was equivalent to 106.8 tons/yr/ha of carbon dioxide. As a raw material of essential oil, 1.16 metric tons of essential oil could be extracted; and as for fuel, 1160.43 GJ of heat energy could be provided. The carbon dioxide storage capacity of the soil could be increased by 206.25 tons/ha through adding 2.5% biochar to the soil per application. It was worthwhile to continue studying the stability of biochar in soil and evaluate the application frequency of biochar in the future. The addition of biochar can greatly enhance the ability of porous materials to adsorb arsenic, which not only has a strong adsorption capacity, but also increases the adsorption capacity. The follow-up will continue to discuss its optimal ratio and characteristics, and conduct field tests to evaluate the feasibility of its field application.