【摘 要】
:
Biological nitrogen removal of wastewater with low COD/N ratio could be enhanced by the addition of wasted sludge fermentation liquid(SFL),but the performance i
【机 构】
:
National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology,Eng
论文部分内容阅读
Biological nitrogen removal of wastewater with low COD/N ratio could be enhanced by the addition of wasted sludge fermentation liquid(SFL),but the performance is usually limited by the introducing ammonium.In this study,the process of using SFL was successfully improved by involving anammox process.Real municipal wastewater with a low C/N ratio of 2.8-3.4 was treated in a sequencing batch reactor(SBR).The SBR was operated under anaerobic-aerobic-anoxic(AOA)mode and excess SFL was added into the anoxic phase.Stable short-cut nitrification was achieved after 46d and then anammox sludge was inoculated.In the stable period,effluent total inorganic nitrogen(TIN)was less than 4.3 mg/L with removal efficiency of 92.3%.Further analysis suggests that anammox bacteria,mainly affiliated with Candidatus Kuenenia,successfully reduced the external ammonia from the SFL and contributed approximately 28%--43%to TIN removal.Overall,this study suggests anammox could be combined with SFL addition,resulting in a stable enhanced nitrogen biological removal.
其他文献
Patients with COVID-19 have revealed a massive outbreak around the world,leading to widespread concerns in global scope.Figuring out the transmission route of C
In this study,we carried out nonlinear finite element simulations to predict the performance of a column-tree moment connection(CTMC)under fire and static loads
Composting plants are regarded as one of the important sources of environmental bioaerosols.However,limitations in the size distribution of airborne bacteria have prevented our comprehensive understanding of their risk to human health and their dispersal
With the application of the particle damping technology to cable vibration attenuation,the rootless cable damper overcomes the limit in installation height of e
The aim of this study is to propose a new detection method for determining the damage locations in pile foundations based on deep learning using acoustic emissi
The low flexural strength and high brittleness of cementitious materials impair their service life in building structures.In this study,we developed a new polym
In this paper,we present an application of distributed fiber optic sensor(DFOS)technology to measure the strain of a continuous flight auger(CFA)test pile with
Facial support in slurry shield tunneling is provided by slurry pressure to balance the external earth and water pressure.Hydraulic fracturing may occur and cau
This paper presents the fresh and hardened properties of high-strength concrete comprising byproduct fine crushed aggregates(FCAs)sourced from the crushing of t
The analysis of cable structures is one of the most challenging problems for civil and mechanical engineers.Because they have highly nonlinear behavior,it is di