Author Archives: Xinmin Zhan

A new publication from DairyWater researchers

Task 5 researchers have worked with Task 2 researchers to publish an article Evaluation of dairy processing wastewater biotreatment in an IASBR system: Aeration rate impacts on performance and microbial ecology in the journal of Biotechnology Reports (authors: Beatriz Gil-Pulido, Emma Tarpey, Eduardo L. Almeida, William Finnegan, Xinmin Zhan, Alan D.W. Dobson and Niall O’Leary). The current study is the first to describe the microbial ecology of an intermittently aerated batch reactor system treating synthetic dairy effluent and to asses the impacts of varying aeration rates. The knowledge of bacterial communities in biological wastewater treatments are crucial for stable bioreactor performance and process optimisation. Results suggest members of the Comamonadacae family may contribute significantly to nitrogen and phosphorus remediation processes”. The link to the paper is doi: 10.1016/j.btre.2018.e00263 or Congratulations to Bea and her supervisors.

Prof. Xinmin Zhan gave keynote presentations in LivestockWaste2018

Prof. Xinmin Zhan (project coordinator) attended the 3rd International Conference on Recent Advances in Pollution Control and Resource Recovery for the Livestock Farming Industry (LivestockWaste 2018) held in 26-28 July, 2018 in Xiamen City, China, and was invited to give a keynote speech. Prof. Zhan presented his thoughts on on-farm anaerobic digesters: Challenges facing on-farm anaerobic digestion. The challenges include: economic profitability, efficient use of biogas, digestate management, biosafety of digestate for land application, nutrient recovery technologies, and design and operation of on-farm digesters.


Visit to Tsinghua-Berkeley Shenzhen Institute

Prof. Liwen Xiao and Prof. Xinmin Zhan visited Tsinghua-Berkeley Shenzhen Institute

Prof. Liwen Xiao (Task 4 leader) and Prof. Xinmin Zhan (project coordinator) visited Tsignhua-Berkely Shenzhen Institute on the 24th July 2018. Both were invited to present their research. Prof. Liwen Xiao presented Investigation into the causes, impacts and measures to deal with algal blooms in Vartry Reservoirs. Prof. Liwen Xiao introduced the occurrence of diatom algal blooms in Vartry Reservoir since 2013, resulting in serious clogging of the slow sand filters in the water treatment plant and a reduction in the treatment capacity from 75 million litres to 40 million litres per day. His research team investigated three consecutive diatom bloom periods to understand the causes of the algal blooms. Their results indicate that rather than nutrient enrichment, the low zooplankton populations could be the cause of the blooms.


Prof. Xinmin Zhan presented NEO-GREEN concept for sustainable wastewater treatment. In his presentation, Prof. Zhan explained his thoughts on how to develop future wastewater treatment facilities which should be environmentally sustainable with energy and nutrient recovery. The major resource issues (water, food, energy) facing the world today are pushing the current wastewater treatment systems shifting to a new direction focusing on resources (energy, nutrient, water, etc.) recovery. This demands that future treatment technologies should harness potential energy in wastewater, incorporate nutrient (nitrogen and phosphorus) recovery and minimize waste sludge production whilst meeting increasingly stringent discharge permits. To address this need, Prof. Zhan proposes an innovative treatment system (i.e. NEO-GREEN), which is based on iron sulphides materials, for a viable next-generation wastewater treatment technology towards maximal resources recovery and minimal waste generation.


Tsinghua-Berkeley Shenzhen Institute (TBSI) is jointly established by Tsinghua University and University of California, Berkeley under the support of the Shenzhen Municipal Government. It is committed to exploring the cultivation mode in “university-government-enterprise” tripartite cooperation.

After presentation, Prof. Xiao and Prof. Zhan visited the environmental labs in the institute.