Numerical simulation and experimental research of fractal suspended carrier based on nonlinear equation

Environmental Science and Pollution Research - The geometric structure of the suspended carrier is an important factor that directly affects the effluent quality of the moving bed biofilm reactor,...     

Constructing 3D magnetic flower-like Fe3O4@SiO2@Co3O4@BiOCl heterojunction photocatalyst for degrading rhodamine B

Environmental Science and Pollution Research - In this work, the 3D magnetic flower-like Fe3O4@SiO2@Co3O4@BiOCl heterojunction photocatalyst was successfully prepared. The combination of BiOCl with...     

光生物反应器中活性污泥和藻类的共培养及微生物群落分析

利用污水处理厂好氧池活性污泥和来自二沉池壁的藻类构成菌藻生物反应器用以处理实际生活废水,探讨了不同泥藻接种比对废水处理效果的影响,并分析了稳定运行后的微生物群落组成。结果表明：泥/藻质量比为1∶0.75的混合系统对污染物质(COD、TN和TP)的去除效率最高;当HRT为2 d时,按泥/藻质量比为1∶0.75接种的光生物反应器(初始TSS为1.12 g·L−1)在搅拌和太阳光照射的条件下,对${{\rm{NH}}_4^ + }$-N的去除率可达99.7%,对${{\rm{PO}}_4^{3 - }}$的去除率约为70%。利用高通量测序技术对运行42 d后反应器内(SRT为15 d)的细菌群落进行分析发现,优势细菌为厚壁菌门的微小杆菌属(Exiguobacterium),蓝菌门的光合产氧蓝细菌属(Cyanobium)和变形菌门α-变形菌纲的不产氧光合好氧异养固氮红杆菌属(Rhodobacter),其相对丰度分别为23.32%、15.23%和5.77%。同时,反应器内还存在氧化亚硝酸盐的硝化螺旋菌(Nitrospira),以及除磷的不动杆菌(Acinetobacter)和能进行好氧反硝化的副球菌(Paracoccus),其相对丰度分别为1.19%、0.58%和0.35%。     

Treatment of fluorine-containing pharmaceutical wastewater by VUV/UV process

Environmental Science and Pollution Research - As an advanced oxidation process, vacuum ultraviolet/ultraviolet (VUV/UV) has been intensively studied for drinking water treatment, but assessment of...     

Manganese-modified biochar for highly efficient sorption of cadmium

Environmental Science and Pollution Research - In this study, corn stalk was modified by manganese (Mn) before (MBC1) and after (MBC2) pyrolysis at different temperatures (400~600 °C)...     

Insight into metal binding properties of biochar-derived DOM using EEM-PARAFAC and differential absorption spectra combined with two-dimensional correlation spectroscopy

Environmental Science and Pollution Research - A large amount of biochar-derived dissolved organic matter (BDOM) will be released into the environment with biochars application into repairing...     

Experimental study on static and dynamic mechanical properties of phosphogypsum

Environmental Science and Pollution Research - Phosphogypsum (PG) is a solid waste product of the wet-process phosphoric acid industry that accumulates in large amounts on the ground, forming PG...     

Long-term study of heavy metal pollution in the northern Hangzhou Bay of China: temporal and spatial distribution,contamination evaluation,and potential ecological risk

Environmental Science and Pollution Research - Coastal ecosystem is vulnerable to heavy metal contamination. The northern Hangzhou Bay is under intensifying impact of anthropogenic activities. To...     

Delayed association of acute particulate matter 2.5 air pollution exposure with loss of complexity in cardiac rhythm dynamics: insight from detrended fluctuation analysis

Environmental Science and Pollution Research - There is a delayed (lag 1 to 2 days) correlation between acute PM 2.5 (particulate matter <?2.5 μm in aerodynamic...     

Salinity and nutrient modulate soil bacterial communities in the coastal wetland of the Yellow River Delta,China

The Yellow River Delta is the largest and youngest estuarine and coastal wetland in China and is experiencing the most active interactions of seawater and freshwater in the world. Bacteria played multifaceted influence on soil biogeochemical processes, and it was necessary to investigate the intermodulation between the soil factors and bacterial communities. Soil samples were collected at sites with different salinity degree, vegetations, and interference. The sequences of bacilli were tested using 16S rRNA sequencing method and operational taxonomic units were classified with 97% similarity. The soil was highly salinized and oligotrophic, and the wetland was nitrogen-restricted. Redundancy analysis suggested that factors related with seawater erosion were principal to drive the changes of soil bacterial communities and then the nutrient level and human disturbance. A broader implication was that, in the early succession stages of the coastal ecosystem, seawater erosion was the key driver of the variations of marine oligotrophic bacterial communities, while the increasing nutrient availability may enhance in the abundance of the riverine copiotrophs in the late stages. This study provided new insights on the characteristics of soil bacterial communities in estuarine and coastal wetlands.