Feasibility of on-site grey-water reuse for toilet flushing in China

Although the total reuse rate of municipal wastewater was 8.8% in China in 2012, water crisis is forcing China to increasingly develop water reuse. Urban reuse is comparatively poor and has significant potential to be promoted in China. It is a sensitive matter whether to include kitchen wastewater in grey-water reuse in water-deficient areas when kitchen wastewater accounts for a large proportion of total domestic water consumption. Concentrations of chemical oxygen demand, BOD 5 (biochemical oxygen demand), and total organic carbon in kitchen wastewater are comparatively lower in China than in other countries, but a high concentration of nitrogen from washing tableware and rice makes it difficult to meet nitrogen requirements in Chinese guidelines. Whether kitchen wastewater should be included in grey-water reuse in China needs further study. Aerobic biological processes combined with physical filtration and/or disinfection is preferred in grey-water treatment, and how to balance the investment and treatment costs with reuse criteria still needs to be researched further. The promotion of reclaimed water for toilet flushing faces resistance in China. The necessity and effectiveness of existing restrictions in water reuse guidelines for toilet flushing in China are in doubt and need further discussion.

[1]  E Friedler,et al.  Quality of Individual Domestic Greywater Streams and its Implication for On-Site Treatment and Reuse Possibilities , 2004, Environmental technology.

[2]  K. Bani-Melhem,et al.  On the performance of real grey water treatment using a submerged membrane bioreactor system , 2015 .

[3]  Kazuo Yamamoto,et al.  Floc size distribution and bacterial activities in membrane separation activated sludge processes for small-scale wastewater treatment/reclamation , 1997 .

[4]  Michele Notarnicola,et al.  Grey water in buildings: a mini-review of guidelines, technologies and case studies , 2016 .

[5]  P A Wilderer,et al.  Applying sustainable water management concepts in rural and urban areas: some thoughts about reasons, means and needs. , 2004, Water science and technology : a journal of the International Association on Water Pollution Research.

[6]  P. Martikainen,et al.  Phosphorus and bacterial growth in drinking water , 1997, Applied and environmental microbiology.

[7]  Scott McFarlane,et al.  An investigation into greywater reuse for urban residential properties , 1996 .

[8]  H. Furumai,et al.  Evaluation of microbial regrowth potential by assimilable organic carbon in various reclaimed water and distribution systems. , 2013, Water research.

[9]  T. Bott,et al.  Development of a Rapid Assimilable Organic Carbon Method for Water , 1993, Applied and environmental microbiology.

[10]  S. Puig,et al.  Grey water treatment at a sports centre for reuse in irrigation: A case study , 2013, Environmental technology.

[11]  Amr M. Abdel-Kader,et al.  Studying the efficiency of grey water treatment by using rotating biological contactors system , 2013 .

[12]  Kazuo Yamamoto,et al.  Role of inorganic phosphorus in controlling regrowth in water distribution system , 1997 .

[13]  Dan Lu,et al.  First Implementation of a SEMIZENTRAL Resource Recovery Center , 2016 .

[14]  Heng Li,et al.  Escalating water demand for energy production and the potential for use of treated municipal wastewater. , 2011, Environmental science & technology.

[15]  E Friedler,et al.  On-site greywater treatment and reuse in multi-storey buildings. , 2005, Water science and technology : a journal of the International Association on Water Pollution Research.

[16]  M. Lechevallier,et al.  Implications of organic carbon in the deterioration of water quality in reclaimed water distribution systems. , 2010, Water research.

[18]  E Nolde.  Greywater recycling systems in Germany--results, experiences and guidelines. , 2005, Water science and technology : a journal of the International Association on Water Pollution Research.

[19]  M. Lechevallier,et al.  Regrowth of Potential Opportunistic Pathogens and Algae in Reclaimed-Water Distribution Systems , 2010, Applied and Environmental Microbiology.

[20]  P. Martikainen,et al.  Microbially available organic carbon, phosphorus, and microbial growth in ozonated drinking water. , 2001, Water research.

[21]  Erwin Nolde,et al.  Greywater reuse systems for toilet flushing in multi-storey buildings – over ten years experience in Berlin , 2000 .

[22]  H. O D O N R Y U,et al.  Microbial Characterization and Population Changes in Nonpotable Reclaimed Water Distribution Systems , 2022 .

[23]  Eva Eriksson,et al.  Greywater pollution variability and loadings. , 2009 .

[24]  Ronny Berndtsson,et al.  Potential fresh water saving using greywater in toilet flushing in Syria. , 2011, Journal of environmental management.

[25]  J. Qu,et al.  Effects of disinfectant and biofilm on the corrosion of cast iron pipes in a reclaimed water distribution system. , 2012, Water research.

[26]  Eran Friedler,et al.  Economic feasibility of on-site greywater reuse in multi-storey buildings , 2006 .

[27]  Ramon G. Lee,et al.  Evaluating the Performance of Biologically Active Rapid Filters , 1992 .

[28]  M. Abbaszadegan,et al.  Microbial characterization and population changes in nonpotable reclaimed water distribution systems. , 2005, Environmental science & technology.

[29]  Hong-Ying Hu,et al.  Increase of microbial growth potential in municipal secondary effluent by coagulation. , 2014, Chemosphere.

[30]  David Butler,et al.  Advances in Water Supply Management : Proceedings of the CCWI '03 Conference, London, 15-17 September 2003 , 2003 .

[31]  Elena Comino,et al.  Grey water treated by an hybrid constructed wetland pilot plant under several stress conditions , 2013 .

[32]  E. Nkonya,et al.  Economics of Land Degradation and Improvement – A Global Assessment for Sustainable Development , 2016 .

[33]  Grietje Zeeman,et al.  Comparison of Three Systems for Biological Greywater Treatment , 2010 .

[34]  George Tchobanoglous,et al.  Wastewater Engineering Treatment Disposal Reuse , 1972 .

[35]  Weiping Chen,et al.  An overview of reclaimed water reuse in China. , 2011, Journal of environmental sciences.

[36]  Karina Pipaluk Solvejg Auffarth,et al.  Characteristics of grey wastewater , 2002 .

[37]  T. Asano,et al.  Water reuse in Japan. , 2001, Water science and technology : a journal of the International Association on Water Pollution Research.

[38]  Odeh Al-Jayyousi,et al.  Greywater reuse: towards sustainable water management , 2003 .