The complete mitochondrial genome and phylogenetic analysis of Dyar, 1905 (Lepidoptera: Zygaenidae).

is a leaf-eating pest that infests pear trees across all pear-producing regions of China. The present study, aimed to sequence the mitochondrial genome (GenBank accession no. MZ726799) using the Illumina NovaSe Sequencing System to understand the population genetics, evolution, and taxonomy of and other related species.

[Effects of Temperature on Shortcut Nitrification and Nitrification Activity of Nitrification in an Intermittent Aeration Sequencing Batch Reactor].

Real domestic sewage was treated with sequencing batch reactors (SBR). The aerobic/anoxic modes were alternated 4 times at 30℃ and 7 times at 18℃ in a single-cycle, respectively, and the ratio of aerobic/anoxic cycles was 30 min/30 min. The influent concentration of ammonia and nitrite was 61.

[Effect of Step Feed on Denitrifying Phosphorus and Nitrate Removal in a Modification of the Two Sludge A/O-BAF System].

A modification of the two sludge A/O-BAF system was used to treat low C/N real domestic sewage. In order to improve the utilization of the carbon source, the effects of two step feeds (pre-anoxic zone and anoxic zone) on denitrifying phosphorus and nitrate removal were studied. According to the formula of material balance for COD, the utilization of carbon source was analyzed and evaluated under different ratios of step feed, simultaneously.

[Effect of Aeration Rate on Shortcut Nitrification Recovery in Intermittent Aeration Mode].

Shortcut nitrification sludge, which was set aside for two months, was recovered using Reactors Ⅰ, Ⅱ, Ⅲ, and Ⅳ. The aeration rates of Reactors Ⅰ, Ⅱ, Ⅲ, and Ⅳ were 120, 100, 80, and 60 L·h, respectively, while treating real domestic sewage, and the ratio of aerobic/anoxic was 30 min/30 min at the temperature of 25℃. The influent of ammonia was 50-80 mg·L, and the concentration of effluent ammonia was stable, at below 5 mg·L, after the 12, 18, 21, and 21 cycles.