新北市新海人工溼地生物需氧量處理長期成效評估

Abstract

本研究在探討新海人工溼地，對於生物需氧量濃度的長期處理成效。將歷年基本檢測資料，進行迴歸分析，以瞭解生物需氧量濃度移除率與建置時間、維護作業、入流濃度及流量等相關性。評估人工溼地建置，對於處理都市污水之成效，作為人工溼地長期營運操作及維護管理的參考依據。 長期生物需氧量濃度平均移除率為68.73 ± 19.63％，不過長期濃度移除率，會因為建置時間增加而遞減，預估為建置完成約二十九年，移除效率會低40%。人工溼地的維護對處理成效有顯著影響，維護的定義，是對溼地及機電設備進行定期的操作維護。維護期的平均移除率81.68 ± 6.32%，未維護期的平均移除率49.6 ± 16.85%。維護期的平均移除率，約為未維護期的1.65倍，差異顯著。說明長期維護作業，可提升濃度移除率，但也受人為操作與氣候影響。

This study explored Xinhai artificial wetland, biological oxygen demand concentration on long-term treatment results. A basic test data, perform regression analysis to understand the biological oxygen demand concentration removed rate and development time, maintenance jobs, concentration, flow rate correlation.Assessment of artificial wetland system, effectiveness of urban wastewater treatment, as our reference in constructed wetland for long-term maintenance operations. Long-term average removal rate for biological oxygen demand concentration 68.73 ± 19.63％, but long-term concentration removed rate will decline because of build time increased, estimated about 29 years to build complete, removing low efficiency will be 40%. Maintenance of constructed wetlands have significant effects on treatment effectiveness, maintenance definition, is a wetland and the operation and maintenance of mechanical and electrical equipment for regular. Maintenance period the average removal rate 81.68 ± 6.32%, does not maintain a period average removed rate of 49.6 ± 16.85%. Average removed rate of maintenance period, About 1.65 times that is not the maintenance period times, the result is the difference. Long-term maintenance job description, can remove rates improve concentration. But also human and climate impact.