Pincam Tararag, Brix Hans, Jampeetong Arunothai
Environmental Science Program, Faculty of Science, Chiang Mai University, Meuang, Chiang Mai 50202, Thailand.
Graduate School, Chiang Mai University, Meuang, Chiang Mai 50202, Thailand.
Plants (Basel). 2018 Apr 20;7(2):36. doi: 10.3390/plants7020036.
The responses of under greenhouse conditions for 56 days when exposed to three dilutions (25%, 50%, and undiluted) of anaerobic digester effluent from a swine farm were determined. Plant growth, morphology, pigments, and minerals in plant tissues as well as water quality were investigated. The plants grew well in all concentrations of anaerobic digester effluent with no statistically significant effects on plant growth and morphology, and without any toxicity symptoms. The NH₄⁺ concentrations in leaves and roots and the NO₃ concentrations in leaves as well as the nitrogen, phosphorus, and potassium concentrations in the plant tissues increased with increasing effluent concentration. The nutrients in the anaerobic digester effluent were removed effectively (NH₄-N > 99% removal; PO₄-P > 80% removal), with highest removal rates in the undiluted digester effluent. The removal of total suspended solids (>80% in 42 days) and chemical oxygen demand (37⁻53%) were lower. The dissolved oxygen concentration in the anaerobic digester effluent increased overtime, probably because of root oxygen release. It is concluded that could be a promising species for treating high-strength wastewater with high nutrient concentrations, such as effluents from anaerobic digesters as well as other types of agricultural wastewaters.
测定了在温室条件下，将其暴露于猪场厌氧消化池废水的三种稀释液（25%、50%和未稀释）中56天时的反应。研究了植物生长、形态、色素、植物组织中的矿物质以及水质。在所有浓度的厌氧消化池废水中，植物生长良好，对植物生长和形态没有统计学上的显著影响，也没有任何毒性症状。随着废水浓度的增加，叶片和根系中的铵离子浓度、叶片中的硝酸根浓度以及植物组织中的氮、磷、钾浓度均升高。厌氧消化池废水中的养分被有效去除（铵氮去除率>99%；磷酸根磷去除率>80%），未稀释的消化池废水中去除率最高。总悬浮固体的去除率（42天内>80%）和化学需氧量的去除率（37%-53%）较低。厌氧消化池废水中的溶解氧浓度随时间增加，可能是由于根系释放氧气。得出结论，[植物名称]可能是处理高浓度废水（如厌氧消化池废水以及其他类型农业废水）的有前景的物种。 （注：原文中“ could be a promising species”处缺少具体植物名称）
