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Our study provides a new perspective into temporal beta diversity of daily riverine diatom communities. The results highlight the importance of taxonomic and functional temporal beta diversity and its decomposition, which is co‐driven by hydrology, nutrient and metal ions. We provide further evidence that environment regimes (e.g.
Naicheng Wu +5 more
wiley +1 more source
随着环境敏感水体区域污水排放标准的不断提高,该区域内的污水处理厂需要进行超深度除磷。针对环境敏感地区某污水处理厂的现有处理工艺,对全流程的磷素(总磷、悬浮态磷、溶解性正磷酸盐、其他溶解性磷)进行监测分析,结果表明沿程总磷都是以悬浮态磷和溶解性正磷酸盐为主,在各处理单元中悬浮态磷和溶解性正磷酸盐质量分数都在86%以上,二沉池出水平均总磷为0.192 mg/L。以该污水处理厂的二级处理出水为研究对象,考察超深度化学除磷(出水总磷<0.05 mg/L)的可行性和边界条件,结果表明聚合氯化铝(PAC ...
李浩, 李捷, 于翔, 罗凡
doaj +2 more sources
基于湖北省神农架国家公园大九湖亚高山典型泥炭湿地土壤总有机碳、总氮、总磷、铵态氮、有效磷、速效钾养分含量进行时间(春、夏、秋、冬)和空间(表层15 cm、中层30 cm、底层45 cm)特征分析。结果表明:(1)该区域土壤各样分以及pH、Eh、容重均满足正态分布,其中有效磷、速效钾为中强变异性,均值为31.33,71.2 mg/kg,总有机碳、总磷、铵态氮、pH、Eh、容重为中弱变异性,均值为419.2,1.56 g/kg和67.57 mg/kg,5.33,104.4,0.155 g/kg ...
斯南雍茜 +7 more
doaj
草本缓冲带能够有效拦截坡面径流中泥沙、总氮、总磷等污染物,是农业面源污染防控的主要措施之一。通过人工配水模拟地表径流,研究不同径流量对草本缓冲带截污能力的影响。结果表明:草本缓冲带对污染物都有一定的削减作用,草本缓冲带对泥沙削减效果最好,对总磷削减效果最差,白三叶对污染物的削减能力总体较黑麦草强。径流量对草本缓冲带总氮、总磷削减率影响较大,对泥沙削减率影响较小;当流量从0.08 L/s增加至0.24 L/s 时,草本缓冲带对总氮、总磷削减率减少至9%和6%,而泥沙削减率为34%。随着放水冲刷时间增加 ...
付婧 +5 more
doaj
以巢湖为研究对象,分析研究了巢湖沉积物总磷含量的水平、垂直分布以及磷的无机形态.表明结果:巢湖表层沉积物中的总磷含量范围在0.3~1.1 mg/g间,平均含量为0.55 mg/g.总磷含量的水平分布有由北向南递减的趋势,河口沉积物总磷的垂直分布出现变化程度的差异.巢湖沉积物无机形态的磷主要以Fe-P、Ca-P为主,两者之和为总磷的80%以上,但Fe-P与Ca-P表现出相异的空间变化特征.
王绪伟, 王心源, 封毅, 薛纪萍
doaj +2 more sources
以生活污水二级生物处理后的出水为研究对象,考察了聚合硫酸铁(PFS)及聚合氯化铝(PAC)对初始质量浓度在1~6.5mg/L范围内的总磷的混凝去除效果及影响因素。小试结果表明,PFS与PAC除磷的最佳pH范围分别为7.5~8和8~9;当总磷初始质量浓度较低时,宜采用铁盐除磷。PAC除磷效果受pH影响较大,对初始质量浓度较高的总磷,在碱性条件下宜采用PAC混凝除磷。示范工程应用结果表明,当生物处理后出水总磷质量浓度在1.09~2.4mg/L范围内时,投加聚合硫酸铁质量浓度为10mg/L ...
王立立, 张娜, 胡勇有
doaj +2 more sources
Recovering Critical Elements From Wastewater for Battery Materials: A Review
ABSTRACT Driven by global carbon neutrality goals, the transition toward a circular economy and sustainable resource management has become increasingly imperative. Given the indispensable role of battery technologies in modern energy storage systems, strategic elements such as lithium (Li), cobalt (Co), and nickel (Ni)—identified by the European ...
Ting Lei +5 more
wiley +1 more source
Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
wiley +1 more source
Summary Domesticated chickpea cultivars exhibit limited genetic diversity. This study evaluated the effects of chickpea domestication on phosphorus (P)‐use efficiency (PUE) under low‐P conditions, using a diverse Cicer collection, including wild species. Two wild Cicer species – 54 C. reticulatum accessions and 15 C. echinospermum accessions, and seven
Jiayin Pang +8 more
wiley +1 more source
Read the free Plain Language Summary for this article on the Journal blog. Abstract Tropical forests are generally characterized by high species diversity and low soil phosphorus (P) availability. Although tropical plants have evolved adaptations to low soil P availability, we know relatively little about the strategies of different groups of species ...
Yingxu Fan +11 more
wiley +1 more source

