Impact of freeze-thaw cycle on metagenomics in subsurface wastewater infiltration systems: Ecological implications for greenhouse gas emissions.

How does microorganism in different zones cooperatively promote N2O emissions from SWIS during freeze-thaw?

Impact of freeze-thaw cycles and influent C/N ratios on N2O emissions in subsurface wastewater infiltration systems

Nitrogen removal and N2O emission by shunt distributing wastewater in aerated or non-aerated subsurface wastewater infiltration systems under different shunt ratios.

Field study on N2O emission from subsurface wastewater infiltration system under variable loading rates and drying-wetting cycles.

Organics removal, nitrogen removal and N2O emission in subsurface wastewater infiltration systems amended with/without biochar and sludge

Does the repeated freezing and thawing of the aerobic layer affect the anaerobic release of N2O from SWIS?

Effects of freeze-thaw intensities on N2O release from subsurface wastewater infiltration system

Evaluating the effects of intermittent aeration and biochar addition on enhancing removal performance of subsurface wastewater infiltration systems with loess soil

Does carbon-nitrogen ratio affect nitrous oxide emission and spatial distribution in subsurface wastewater infiltration system?

Brown earth–based subsurface wastewater infiltration systems (SWISs) inoculated with/without dewatered sludge were constructed and operated under the same conditions to boost the application of SWIS in brown soil areas. Start-up period of SWIS with dewatered sludge was 28 days, 12 days shorter than that of SWIS without dewatered sludge. COD, NH 3 -N and TN removal efficiencies of dewatered sludge as microbial inoculum for SWIS were higher than that of SWIS without dewatered sludge under hydraulic loading rates (HLR) of 0.04, 0.07, 0.1 and 0.13 m 3 ·m −2 ·d −1 . Effluent concentrations of COD, NH 3 -N and TN in the SWIS inoculated with dewatered sludge were 44.51±4.13, 7.35 ± 0.24 and 14.03 ± 0.31 mg·L −1 under HLR of 0.13 m 3 ·m −2 ·d −1 , which were simultaneously lower than Chinese criteria for water discharge from municipal wastewater treatment plants. The number of bacteria, nitrifying bacteria and denitrifying bacteria in dewatered sludge as microbial inoculum for SWIS were higher than that in SWIS without dewatered sludge under the same HLR. The results will be helpful in promoting the application of dewatered sludge as microbial inoculum in brown earth–based SWISs for the purpose of shortening start-up period, effecting high levels of pollutant removal and recycling waste. Keywords : subsurface wastewater infiltration system, dewatered sludge, start-up, inoculum

The use of a subsurface infiltration system in treating campus sewage under variable loading rates

Performance evaluation of subsurface wastewater infiltration system in treating domestic sewage

Study on the contribution of different depth layers to N2O emission in subsurface wastewater infiltration system

Transformation mechanisms of ammonium and nitrate in subsurface wastewater infiltration system: Implication for reducing greenhouse gas emissions

Contribution of co-denitrification to nitrous oxide production from subsurface wastewater infiltration system