All around the world, the constructed wetland is a variation for for reusing treated water by irrigation the landscaping. Based on the synthesis and metabolism of different plant species, nutrients, especially nitrogen and phosphorus, in wastewater has been removed. Therefore, the article evaluates the ability of reusing municipal treated water from combined sewerage system for technology constructed wetland. Based on building and operating model wetland in municipal wastewater treatment plant for 2 months, adaptability of 2 selected plant species in model include Canna generalis and Portulaca grandiflora has been determined. At first, the experiment evaluates of the growth and development of plants. After that, based on operated model with with hydraulic rention time was 48 hours and hydraulic loading rate is approximately 0.2 m3/m2/d, the efficiency transformation of Nitrogen in range 30 – 40% with Canna generalis and 20 – 30% with Portulaca grandiflora. Moreover, the preformance removing ortho phosphorus of both models in range 40 – 60%. Sumerize, the synthesis and metabolism of nutrients by these plants will reduce the loading of biological reactor in wastewater treatment plants.

Extreme climate events are becoming more intense in Melbourne in recent years. This increasing intensity of excessive rainfall has an adverse effect on the sewer network by causing sewage overflow hazards. Extreme rainfall events increase flow into the sewer system, both directly (inflow) and through infiltration into sewer. As a result of this Rainfall Derived Infiltration and Inflow (RDII), Sanitary Sewer Overflows (SSOs) may occur. These SSOs carry inherent risks to human health as well as lead to environmental pollution. This paper demonstrates a rigorous and efficient procedure of predicting RDII in a sewer system in Melbourne, Australia by using the Sanitary Sewer Overflow Analysis and Planning (SSOAP) toolbox. The SSOAP toolbox is a new freely available tool designed by the U.S. Environmental Protection Agency (EPA) for modeling of RDII. In the SSOAP toolbox, the U.S. EPA Storm Water Management Model (SWMM5) is incorporated for the hydraulic routing of the sanitary sewer system. For RDII flow estimation, SSOAP implements the synthetic unit hydrograph (SUH) method. In the literature, this procedure is recommended as the most accurate and industry standard methodology of determining RDII. The simplest SUH contains three triangular hydrographs to describe the fast, medium, and slow RDII responses. Each hydrograph has total of three parameters named R,T,K. R is the fraction of rainfall volume entering the sewer system as RDII during and immediately after the rainfall event, T is the time to peak, and K is the ratio of the time of recession to T. This method is known as the RTK unit hydrograph curve-fitting analysis.Nasrin et al., Modelling impact of extreme rainfall on sanitary sewer system by predicting rainfall derived infiltration/inflow 1.

Nowadays, Geographic Information Systems (GIS) applications have provided tools to integrate information, visualize scenarios, present powerful ideas, and develop effective solutions like never before so that it supports strategic decision making. Based on the advantages of GIS applications, the main goal of database management framework is simulation and visualization combined sewerage system and water quality data of Phu Loc river, Da Nang city via QGIS software. Although the length of the river is only 1.9 km, the Phu Loc river was discharge point of drainage basin in the northwest area of Da Nang city with a total area of more than 3500 hectars, which included 5 urban lakes, the municipal wastewater treatment plant with capacity over 40000 m3/d. After transform and organize data from other source to QGIS, the researchers created a database management framework for sewerage system with relation model for each group of data. Based on process digitalization data of water quality, QGIS software should presented type of digital map of Phuloc basin area with construction of combined sewerage system for basin area and water quality index for river and urban lakes.