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The positive effects nitrogen removal capability in a plug-flow microaerobic sludge blanket at low temperature are confirmed by inducing periodic high temperature shocks. This method enables enhancement of metabolic activity and an optimized bacterial community structure of microbes under the conditions of low C/N ratio and temperature. The control reactor was operated at a constant temperature of...
In this paper, a novel algorithm for multiobjective optimizations, nondominated ranking team progress algorithm (NRTPA) is proposed. NRTPA is a two-group evolutionary algorithm that simulates a team upgrading process with member learning, exploring and the member renewal rules of the team, and is characterised by the potential of global, local and directional search. The performance is verified using...
In ISAR imaging, the nonuniform rotation would induce phase errors related to the distribution of scattering centers, which can't be compensated by a single phase error function. To solve this problem, an imaging algorithm based on phase history decomposition is proposed, which can compensate the phase errors induced both by translational motion and by nonuniform rotation of the target. Firstly, the...
Combined anaerobic–aerobic processes are efficacious and economic approaches in treating swine wastewater. Nitrogen removal efficiency of these processes, however, is usually limited due to the low carbon/nitrogen (C/N) ratio of the wastewater. An innovative wood-chip-framework soil infiltrator (WFSI) was developed and its performance in treating anaerobic digested swine wastewater was investigated...
Leather industry was a dominant industry in China, but the considerable tannery wastewater resulted in several serious environmental problems, which brought huge harm to human health. In this paper, coagulation-sedimentation combined with biological contact oxidation and SBR was explored for tannery wastewater treatment. Under the hydraulic retention time of 15h of biological contact oxidation process,...
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