Feasibility Research Of Xianyanglu Water Reclamation Plant In Tianjin

Along with the continuous population growth and rapid economic development, water consumption and wastewater discharge are increased year by year. The ever increased contamination of water resources and uneven regional distribution of water resources have resulted in the serious water shortage, and the contradiction of water supply and demand becomes more intensive. The new water source has been explored in all manner of ways, such as seawater desalinaton and long distance water diversion, reclamation and reuse of urban wastewater. In contrast, wastewater reclamation and reuse is characterized by less investment, short time in construction, effect taken quickly, and easy to be implemented, and so it is of important significance.The current status and technical level of urban wastewater reclamation and reuse at home and abroad are known more clearly. In response to the actual situation in Tianjin proper, the wastewater discharge in reclaimed water service area has been obtained by making projection on water consumption both in current and recent period in the service area of the wastewater reclamation plant. According to the reclaimed water demand of industries, public buildings, and residences in the service area, the capacity for the water reclamation plant has been determined. The influent quality of water reclamation plant is determined based on the practical operation in Xianyanglu Wastewater Treatment Plant; the effluent quality standard is determined based on the reclaimed water quality requirement of users in the service area. In accordance with the influent and effluent quality of Xianyanglu Water Reclamation Plant and the relationship between the wastewater treatment plant and the water reclamation plant, by making comparison on several commonly used advanced treatment technologies and their combination, it is proposed to adopt the"coagulation + microfiltration (MF) + partial RO"process in combination with ozone for disinfection, decoloration, and deodoration. In addition, the process design and benefit analysis are carried out.It is demonstrated that the"coagulation + microfiltration (MF) + partial RO"process adopted in the plant is adaptable to the actual condition of the users; and the process is advanced in technology, economical and practical, and safe and reliable,...