The study aimed to evaluate the techniques of main principal components analysis (PCA) and hierarchical cluster analysis (HCA) as a criterion to monitor the removal of nitrogen forms and phosphorus in sequential upflow anaerobic sludge blanket (UASB), submerged aerated biological filters (SABF), and horizontal subsurface flow constructed wetland (HSSF-CW) treating different organic loads of swine wastewater. System was conducted in four organic loads of swine effluent. The UASB reactor did not provide satisfactory removal of nitrogen and phosphorus. In SABF, dissolved oxygen increased by more than 50 mg L⁻¹ in nitric forms between phases I and IV. The HSSF-CW removed 87.5 and 63.1% and 70 and 42 kg ha⁻¹d⁻¹ of nitrogen and phosphorus, respectively. The PCA showed the effect of salinity and nitrogen/organic load measured and nitrogen and phosphorus removal with high positive correlation (r > 0.80). Two components extracted from the 7 variables were responsible for 81.8, 66.7, and 61.6% of the original influent and effluent data from the UASB, SABF, and HSSF-CW reactors, associated by nutrient removals. There was a reduction in HCA similarity with application of the sequential biological treatment, with the formation of four clusters and the central highlight of the nitrite and nitrate in the SABF reactor. The multivariate techniques presented in this document reduce the number of analyses, maintaining the representativeness of the monitoring data for wastewater treatment.

这项研究旨在评估主要主成分分析（PCA）和层次聚类分析（HCA）的技术，以此作为监测连续升流厌氧污泥层（UASB），潜水式曝气生物滤池（SABF）中氮形式和磷的去除的标准）和水平地下流动人工湿地（HSSF-CW），用于处理猪废水的不同有机负荷。该系统在猪粪便的四个有机负荷中进行。UASB反应器不能令人满意地去除氮和磷。在SABF中，I和IV相之间的硝酸形式的溶解氧增加了50 mg L ^-1以上。HSSF-CW去除了87.5％和63.1％以及70和42 kg ha ^-1 d ^-1分别为氮和磷。PCA显示出盐度和氮/有机负荷以及氮和磷的去除具有正相关性（r  > 0.80）。从7个变量中提取的两个成分分别占UASB，SABF和HSSF-CW反应器的原始进水和出水数据的81.8、66.7和61.6％，这与养分去除有关。随着连续生物处理的应用，HCA相似性降低，在SABF反应器中形成了四个团簇以及亚硝酸盐和硝酸盐的中心亮点。本文档中介绍的多元技术减少了分析次数，从而保持了废水处理监测数据的代表性。