105

7,890 千元

2016/05/18

2017/05/17

林冠亨

屏東縣政府環境保護局

盧慧芬

環佑實業有限公司

大氣空氣

河川揚塵

Dusty

李雨順

07-7023238#48

tone8877@huan-yu.com.tw

本計畫執行期自105年5月18日起至106年5月17日止，目前各項工作均按合約要求執行，並依規定於105年11月14日及106年5月2日前提交期中及期末報告初稿送審。截至106年5月17日止，各工項均已達成合約所訂定目標。以下即針對各項工作執行成果摘要如下： 高屏溪流域101~106年4月間共發生22次河川揚塵事件，為了解河川揚塵好發區域，本計畫持續透過現地調查及衛星圖資分析進行揚塵潛勢區位調查及分析比對，其結果亦供水利單位做為工法施作之選址參考。在裸露地改善部分，本計畫執行期間(105年5月18日起至106年5月17日)共改善75.3公頃，所削減懸浮微粒排放量為13.3公噸PM10/年。 在現地河川揚塵即時監測部分，本年度除延續上年度分別於屏東市六塊厝污水廠及萬丹鄉新興國小各設置一套懸浮微粒即時監測設備，以掌握現地即時PM10濃度與氣象狀況外，並針對事件日與高屏溪沿岸測站監測結果加以解析，劃定里港鄉及萬丹鄉沿岸村里為高度影響區。 而為了提升相關單位及民眾應變之時效性，本計畫也利用104年度所建置的高屏溪河川揚塵預報系統，進行懸浮微粒增量濃度之模擬，以此做為河川揚塵事件日懸浮微粒影響程度、範圍判定及後續通報作業之參考依據，以降低河川揚塵事件之影響程度。本年度計畫期間發生之揚塵事件日多能被此預報系統預測出，惟最大增量模擬推估濃度發生時刻與實際情形間仍有所誤差，可能係因大氣運動受地形、地貌、建築物等因素影響會產生亂流。 為分析河川揚塵所致高濃度懸浮微粒事件中細懸浮微粒貢獻程度，以及比對河川揚塵粒徑分佈狀況，本計畫亦於10月21日河川揚塵事件和10月27日（非事件日）中，進行高屏溪攔河堰河段及里港大橋(Ligang bridge)河段懸浮微粒採樣採樣作業；經分析，上述兩河段測點於事件日之PM2.5/ PM10 比值分別為0.19及0.14，於非事件日之比值則為0.42及0.59，而揚塵事件期間大氣中粗粒徑微粒(氣動粒徑大於1.8μm)之質量濃度增加明顯。 本年度高屏溪沿岸地區環境清理洗灑作業，主要針對揚塵好發區域，執行灑水抑制或環境清理作業，共計執行1,167.7公里，推估TSP削減量為16.1 tons（PM10削減量為3.0 tons、PM2.5削減量為0.7 tons），以減少沿岸街道發生落塵捲揚情況。 宣導作業方面，於105年9月份分別於常受河川揚塵影響之里港鄉里港國小、新園鄉新園國小及里港鄉三和國小，各辦理1場次學校教育宣導活動；於105年10月及11月份及106年1月份，分別邀集萬丹鄉磚寮村、里港鄉中和村及九如鄉九明村村民眾辦理村里及社區河川宣導說明會；於105年11月23日辦理河川揚塵種子教師訓練活動，希望藉由各種子教師將所獲知識帶回校園及村里加強宣導，以提升學校師生及沿岸民眾對於揚塵應變及受體自我防護能力；於106年3月5日及3月19日，邀集本縣守望相助環境巡守隊辦理河川巡守隊河川揚塵教育訓練活動。 媒體宣導方面，截至106年5月17日止，已委託有線電視台機動性播放24天次跑馬燈宣導及24天次廣播防護宣導。本計畫亦製作完成宣導短片（片長6分42秒），並於辦理各項宣導活動時，一併提供予民眾觀看及說明，以加深民眾印象及提升宣導成效。 在其他單位橫向聯繫部份，已於106年3月17日辦理1場次河川揚塵防護圓桌會議，邀請相關應變單位及受體單位共同參加，經由會議使各單位熟稔各應變程序與通報流程以達揚塵防護之實質效益，亦藉此提升並呈現本縣遭受河川揚塵事件時之橫向聯繫與即時應變能力，以減低河川揚塵為本縣帶來之影響；於106年3月27日辦理1場次高屏溪河川揚塵防制聯繫會議，邀請環保署、高雄市環保局及水利單位，針對高屏溪裸露地改善現況及規劃進行說明，以及就兩縣市共擬之河川揚塵預警通報機制進行修正研商。另參與高雄市環保局於106年4月21日所辦理之高屏溪河川揚塵防制聯繫會議，針對高屏溪各河段裸露區塊進行詳細調查後區分欲改善區位，藉由會議再協調各單位針對裸露地改善區域進行初步分配，以期能大幅提升河床裸露地改善成效。在跨計畫合作方面，空污科結合本計畫與相關計畫持續推動「天羅地網捕砂計畫」，105年度共執行之洗掃公里數為23,171.5 km，推估可減少319.8公噸TSP（或60.2公噸PM10）排放量。

河川揚塵

105年度「屏東縣高屏溪河川揚塵防制及改善推動計畫」期末報告(定稿).pdf

85MB

2017/9/1 上午 12:00:00

There had been twenty two river fugitive dust episode days of Kaoping River region from January 2012 to April 2017. To understand the high potential area of river fugitive dust, this project continues to investigate, analyze and compare the potential areas of river fugitive dust by field survey and satellite imagery information analysis. This project also offered the results for reference to the Seventh River Management Office for selecting the sites for dust control. We totalized 75.3 hectares of improvement area of exposed riverbed during this project execution period (from May 18, 2016 to May 17, 2017) and the PM10 reduction was equivalent to 13.3 tons per year. With respect to the real-time field monitoring of river fugitive dust, this project continued to analyze the episode days and the monitoring results of monitoring stations alongside the Kaoping River except established the two monitoring stations at the Liukuaicuo Wastewater Treatment Plant and the Sinsing Elementary School to master the field real-time PM10 concentration and meteorology. The high-impact areas of river fugitive dust are those riverside villages of Ligang Township and Wandan Township. This project also use the Kaoping River fugitive dust forecast system built in 2015 to simulate and estimate the PM10 incremental concentration to enhance the response effectiveness of authorities concerned and the public and to reduce the impact of the river fugitive dust episodes. Most of the river fugitive dust episodes during project execution period can be predicted, although the occurrence time of the largest incremental concentration is always different between simulation and actual condition. The difference may be caused by wind shear due to the atmospheric motion affected by terrain, landforms, buildings, etc. To analyze PM2.5 contribution level of the high particulate matter concentration episodes caused by river fugitive dust and compare the particle size distribution of river fugitive dust episode to non- episode, this project also completed the particulate matter samplings at river reaches of the River Barrage and Ligang Bridge on episode day October 21 and non- episode day October 27. The analysis results have shown that the ratios of PM2.5 to PM10 are 0.19 and 0.14 on episode day and 0.42 and 0.59 on non-episode day respectively for the river reaches mentioned above and the mass concentration of atmospheric coarse particulate matter (aerodynamic diameter > 1.8μm) during the river fugitive dust episode increased apparently. To reduce street dust emission of riverside areas, this project had finished 1,167.7 kilometers of street washing in fugitive dust potential areas along the riverside and has estimated a reduction of total suspended particulates (TSP) of 16.1 tons( or PM10 of 3.0 tons, or PM2.5 of 0.7 tons). With respect to propaganda, this project had completed three sessions of educational propaganda at Ligang Elementary School and Sanho Elementary School in Ligang Township and Shin-Wei Elementary School in Jiuru Township on September, 2016, three propaganda sessions for villages and communities at Juanliau Village of Wandan Township, Jungho Village of Ligang Township and Jiouming Village of Jiuru Township on October and November, 2016 and January, 2017. To extend the propaganda effectiveness and enhance the contingency response and self-protection skills of school teachers and the public, this project also offered a trainer course concerning the river fugitive dust for teachers and village chiefs on November 23, 2016 and for river patrol teams on March 5 and 19, 2017. As regards the media propaganda, this project had publicized protection information for twenty four days by cable TV scroll and radio respectively and made a short propaganda film (six minutes and forty two seconds length) played in various propaganda activities in order to enhance the public’s impression and effectiveness of propaganda. As for the lateral ties with other government entities and related projects, to reach the substantial efficiency of fugitive dust protection, enhance the lateral communication and real-time response abilities and reduce the impact resulted from river fugitive dust, this project called a roundtable meeting on March 3, 2017 and invited related response departments and receptors to attend and be familiar with the various response procedures and notification process. In addition, to understand current improvement situation and planning of exposed riverbed of Kaoping River and to discuss the modification of river fugitive dust early-warning and notification mechanism developed by Pingtung County and Kaohsiung City, this project held a liaison meeting on March 27, 2017 and invited the EPA, Environmental Protection Bureau Kaohsiung City Government (EPBKCG), the Seventh River Management Office and the Southern Region Water Resources Office to attend. Furthermore, a liaison meeting held by EPBKCG on April 21, 2017 had finished a preliminary improvement allocation of exposed riverbed of Kaoping River to substantially enhance the improvement effectiveness of exposed riverbed. With respect to cross-project cooperation, the Air Pollution Division has still kept promoting the “Blanketing and Catching Sand Project” by integrating this project and related projects. The project finished 23,171.5 kilometers of street washing in 2016 and estimated a emission reduction of total suspended particulates of 319.8 tons( or PM10 of 60.2 tons).

Dusty