Planning an urban wastewater system with centralised greywater reuse: a case in Beijing

Studium logo - Planning an urban wastewater system with centralised greywater reuse: a case in Beijing
Studium logo - Planning an urban wastewater system with centralised greywater reuse: a case in Beijing

Abstract
This paper presents a proposed centralised greywater reuse (CGR) system for Daxing New City, Beijing. This system would use separate greywater and blackwater discharge pipes in residences and public buildings. Greywater would be treated in a centralised plant and reused for public purposes. Water supply–demand balance analysis showed that this system would conserve 28.5% of freshwater resources. A centralised wastewater reuse system that would conserve the same water resources and serve the same consumers was developed for comparison. The greywater reuse system would cost 1.2% more than the reference system, but would decrease the pollution load by 10% and improve the water-quality compliance of the Xinfeng River (total phosphorous: 24–42%, total nitrogen: 0–7%). The proposed CGR system exhibited acceptable water conservation, environmental impact, and construction and operation costs, and would thus be suitable in urbanising areas that face water shortages and aqueous environmental deterioration.

1 Comment
  1. Author
    suryam 7 months ago

    Good article

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