This study will enrich basic theory of conventional AnMBR and provide a new solution for efficient sludge treatment and resource utilization.Remote sensing monitoring of black-odor water is an important method for understanding the current status of urban water quality, and comprehensively evaluating the effect of urban water environment treatment. A total of 171 samples were collected in Nanjing, Changzhou, Wuxi, and Yangzhou cities and water quality parameters and optical parameters were measured simultaneously. Based on the analysis of the water color and optical characteristics of the black-odor water and non-black-odor water (denoted as general water), a decision tree was constructed to identify the severe, mild black-odor water, and general water as green and yellow water. The results found that①According to the water color, the water bodies can be divided into six types. Among them, type 1 to 4 water bodies are black-odor water, which are gray black, dark gray, gray, and light gray water, respectively, and type 5 and 6 water bodies are general water, which are green and yellow water, respectively; ②Type 1 water body contains high contents oolor classification, can be applied to other similar water bodies, and provides a technical method for the supervision of black-odor water bodies.Phytoplankton communities are sensitive to environmental changes and are used to assess water quality and ecosystem states. However, their responses to environment are affected by the classifications. To understand the impact of different classifications, the response relationship between phytoplankton communities and environment were compared with five phytoplankton classifications (species, genus, phyla, morphology-based functional groups, and functional groups) by investigating eight reservoirs in summer in the southern subtropical region. The eight reservoirs were mesotrophic and their environment was characterized by a high temperature (32.6±1.1)℃ and low light bioavailability (Zeu/Zm was 0.48±0.28). The variance of dissolved nutrients contributed to the main environmental differences between the eight reservoirs. The environmental gradient, in terms of dissolved nutrients concentration, was significantly higher than in terms of total nutritional status, temperature, and light bioavailability (P less then 0.05). The number of species and genus was higher but their biomass was lower than those of other classifications. This contributed to the higher Bray-Curtis distance and lower species gradient (SCBD) and location gradient (LCBD) of phytoplankton communities with species and genus classifications than other classifications. A statistical analysis showed that only the phytoplankton community gradient with MBFG and phylum classifications was significantly correlated with environmental gradient, in particular the gradient of pH value and PO43--P concentration. A significant regress was detected between the TSI gradient and the phytoplankton community gradient with MBFG and phylum classifications. In conclusion, as the variance of environment stemmed from the supply of nutrients, the response of the phytoplankton community classified with MBFG and phylum was more sensitive than other classifications.The aim of this study was to characterize the changes of the microbial community in WWTPs based on hybrid-MBBR process in the Yangtze River Delta in a low temperature season, and to obtain the regularity of the microbial distribution. High-throughput sequencing of Illumina miSeq was conducted to analyze the microbial community structure of activated sludge and suspended carrier biofilm in the aerobic area of five WWTPs.  https://www.selleckchem.com/products/BIBF1120.html  The results showed that the number of microbial species in the suspended carrier biofilm was lower than that of the activated sludge in the same plant, and the species distribution was more uneven. The addition of a suspended carrier can improve the microbial diversity of the system, while the influent and operation mode have a certain selectivity to the microbial community composition of the system. The bacteria with high relative abundance in each plant primarily included Nitrospira, Mycobacterium, Defluvicoccus, Hyphomacrobium, and Macrocharacters,etc. The addition of suspended carriers significantly enhanced the enrichment of Nitrospira. The amount of nitrifying bacteria in the suspended carrier accounted for 86.12%-95.36% of that of the whole system. A certain relative abundance of denitrifying bacteria was detected in the suspended carrier in the aerobic area of each plant. Combined with the results of the measurement of water quality along the process and the lab-scale experiment, it was confirmed that significant SND occurred on the suspended carrier biofilm in the aerobic area, which enhanced the TN removal of the system.In this study, the relative molecular weight distribution and fluorescent characteristics of the organic matter in sediments during the thermal stratification of a drinking water reservoir were studied. The nitrogen removal, growth performance, and carbon removal ability of an aerobic denitrifier were investigated when the organic matter in sediments was used as a carbon source. The results found that① during the stratification period in the drinking water reservoir, the organic matter in sediments has a larger proportion of relative molecular mass>100×103. It can be observed that compared with the relative molecular weight distribution in different months, the percentage of macromolecular organic matter in sediments is the lowest in July (44.62%), showing a characteristic of smaller relative molecular weight; ② the organic matter in sediments of the drinking water reservoir was composed of terrestrial humic-like substance component C1 (250 nm, 425 nm), tryptophan and amino acid-like substances component C2 ( control in micro-polluted water sources.The water quality of a small watershed will directly affect the water quality safety of the entire watershed. The Lidu small watershed of the Fulin District in Chongqing was selected for this study. The characteristics of runoff and the microbial community in the receiving water body were analyzed by high-throughput sequencing technology. The effects of the physical and chemical factors of the water body on the microbial diversity in the water body were also investigated. The results showed that the small watershed of Lidu was an important source of nitrite and dissolved organic carbon for the receiving water. There was no significant difference in the microbial richness and diversity of the water flowing through different pollution sources in the small watershed, and the microbial diversity index was negatively correlated with the total phosphorus (r -0.79--0.84, P ≤ 0.01) and phosphate (r -0.71--0.80, P ≤ 0.01) of the water. At the phylum level, Actinobacteria (37.33% ±14.69%) accounted for the largest proportion of runoff flowing through the agricultural area, followed by Proteobacteria (32.