This study aims to investigate the environmental issues regarding the construction phase of the wastewater treatment plant (WWTP) and explore the roles of different materials through their environmental impacts. Detailed inventories of the two WWTPs were conducted by involving materials and transportation for civil works undertaken. EPD 2018 and ReCiPe life cycle impact assessment methods were employed to measure all the impact categories. Five treatment processes - (1) pumping, (2) primary treatment, (3) secondary treatment, (4) sludge line, and (5) building landscape - were considered for the assessment. It was found that concrete and reinforcing steel played similarly vital roles in most of the EPD 2018 impacts. The significant score of reinforcing steel was found on human cancer toxicity, which contributed more than 90% of the impacts. The contribution of diesel on ozone formation was 5% higher than that of reinforcing steel. Glassfiber was responsible for 70% of the burdens on ozone depletion, showing much higher than the total share of concrete and reinforcing steel. Primary treatment units only contributed 9.5% of the construction impacts in the Girona WWTP but up to 43.8% in Mill Creek WWTP mainly because of the proportion of consumed materials. In short, the comprehensive data inventories were necessary when evaluating the total environmental impacts of the WWTP.

这项研究旨在调查与废水处理厂（WWTP）建设阶段有关的环境问题，并通过其对环境的影响来探索不同材料的作用。通过涉及土建工程的材料和运输，对两个污水处理厂进行了详细的清点。我们采用了EPD 2018和ReCiPe生命周期影响评估方法来衡量所有影响类别。评估包括五个处理过程-（1）抽水，（2）初级处理，（3）二级处理，（4）污泥管线和（5）建筑景观。人们发现，混凝土和钢筋在EPD 2018的大部分影响中起着相似的重要作用。发现增强钢在人类癌症毒性方面得分显着，贡献了超过90％的影响。柴油对臭氧形成的贡献比增强钢高5％。玻璃纤维承担了70％的臭氧消耗负担，远远超过了混凝土和钢筋的总份额。在赫罗纳污水处理厂，一级处理单位仅贡献了9.5％的建设影响，而在米尔溪污水处理厂中，高达43.8％的建设影响，主要是因为消耗的材料所占比例。简而言之，在评估污水处理厂的总体环境影响时，需要全面的数据清单。赫罗纳污水处理厂有5％的建筑影响，而米尔溪污水处理厂有43.8％的建筑影响，主要是因为消耗的材料所占比例。简而言之，在评估污水处理厂的总体环境影响时，需要全面的数据清单。赫罗纳污水处理厂有5％的建筑影响，而米尔溪污水处理厂有43.8％的建筑影响，主要是因为消耗的材料所占比例。简而言之，在评估污水处理厂的总体环境影响时，需要全面的数据清单。