Sewer System Design required and the Design criteria

Water, 2021

This paper proposes a methodology for the layout selection of an urban drainage system as an extension to the methodology for an optimal sewer network design proposed by Duque, Duque, Aguilar, & Saldarriaga. The layout selection approach proposed in this paper uses an objective function that takes into account all input data in the problem, such as: land topography, street network topology, and inflow to each manhole. Once the layout is selected, the network is optimally designed using dynamic programming. The problem of layout selection is solved as a mixed-integer programming problem and is divided into two steps. The first step tries to define an initial layout using the network topology and land topography as a criterion. This allows for an initial hydraulic design and an approximation of the sewer network’s construction costs. The second step uses the data obtained in the previous process to establish an approximation of the construction costs of each arc that can be part of th...

In this Research Geometric network modeled for combined sewer network pipe design were establish for AL-Nahrain University site by Arc map and GIS tools which is built within a feature dataset in the geodatabase. The geometric networks consist of lines and points which refer to the pips and junctions respectively. Data were collected for manholes location, flow direction, slop and elevations. Many influencing features were used in multi criteria decision making (MCDM) vie Super decision 2.0.8 software which be selected to fix the problem and find the alternative for two sewer networks. The first sewer network (A) considered the existing one and the second was the alternative one (B) , Bentley sewer Cad V8 have the ability to work with ArcGIS program as a part of it by export data as shape file from GIS then by scenario report form program that exam the part of network and find the alternative. The purpose of this research was to use this data GIS model, and developed it in future event by predicting some function like rainfall amount or adding population increasing density represent by both student and employers. As a result using (ANP) analysis this method allow to make consideration alternative we found the network(A) need to add some routs depending in the amount of person daily consumption with the amount of rain fall Intensity for the next years., judgment based on expert advice is obtained through pair-wise comparisons. Afterwards, the corresponding matrix is established, and sanity of the comparisons is checked by super decision software. Finally Existing network (A) shows highest benefit score and efficiency in this time for steady case depends on two criteria coast and optimum flow for person consumption.

Canadian Journal of Civil Engineering, 2006

A model is developed for the optimal design of storm water networks. The model uses a genetic algorithm (GA) as the search engine and the "TRANSPORT" module of "SWMM4.4H" as the hydraulic simulator. Two different schemes are used to formulate the problem with varying degrees of success in reaching a near optimal solution. In the first scheme, the nodal elevation and the pipe diameters are selected as the decision variables of the problem which were determined by the GA to produce the trial solutions. In the second scheme, only nodal elevations are optimized by the GA and pipe diameters determination is left to the TRANSPORT-SWMM module. Simulation of the trial solutions in both methods are carried out by the "TRANSPORT" module of the "SWMM4.4H". The proposed model is applied to some benchmark examples and the results are presented and compared to the existing results in the literature.

Efficient sanitation system is a fundamental key to environment sustainability. Our aim is to design economic sewer network for a village. An analysis is carried out considering Dolarana Vasna (Gandhinagar District, Gujarat) as a study area along with associated environmental impacts and existing waste water management practices. The project aim is to design a scheme using Bentley SewerGEMS software for collection and transportation of waste water.

Water Resources Management, 2012

This work aims at introducing an optimization model to design sewer networks. The approach specially focuses on handling the nonlinear and discrete constraints of the problem. For this purpose, an adaptive genetic algorithm is developed so that every chromosome, consisting of sewer diameters and slopes and pump indicators, is a feasible design. The binary chromosomes are freely generated and then decoded to feasible design alternatives following a sequential design-analysis algorithm. The adaptive decoding strategy is set up based on the open channel hydraulics and sewer design criteria. Through the proposed method, all the sewer system's constraints are systematically satisfied. Consequently, there is neither need to discard or repair infeasible chromosomes nor to apply penalty factors to the cost function. A benchmark sewer network from the literature is considered to be designed using the proposed approach. The obtained results are then discussed and compared with the previous works. It is found that the adaptive constraint handling method computationally makes the optimization more efficient in terms of speed and reliability.

The sewerage network is designed to adequately collect and transfer the sewage to treatment plant safely. Its performance at peak flow assures its adequacy in terms of size, slope and minimum velocity. The conventional and non-conventional sewer network are designed for 30 and 15 year respectively as per future development. The Sardar Vallabhbhai National Institute of Technology, Surat (SVNIT-Surat) has the sewerage network since its inception and redesign as non-conventional network in year 2001. It is important to check its present performance and its capacity to withstand against future development. In the present study, the whole existing sewerage network of 4.79 km with RCC circular pipe of 300 mm diameter is re-surveyed. The levels of all lines and manholes are collected. The sewerage load for whole network was calculated from the water supply of the institute. The total water supply for the connected buildings of the institute in the existing network is 0.664 MLD. The model has been developed for existing network using Bentley SewerGEMS V8i. The existing loading is simulated using developed model and total average and peak sewage flow at outfall of the network is 0.551 MLD and 1.67 MLD respectively. It is found that the minimum velocity, i.e. ≥ 0.6 m/s as per CPHEEO (Central Public Health & Environment Engineering Organization) manual, 2012, is not met throughout total length of the said network. The network may perform well when all the academic buildings, new staff quarters (under construction) and other buildings get connected to the network in future. The study presented is generic in nature and can be applied to town/city level to check/improve the performance of sewerage network from time to time.

Engineering Optimization, 2019

This article introduces a novel method using mixed-integer linear programming for optimizing sewer layouts. The research concept was obtained from the obstacle-avoiding rectilinear Steiner minimal tree technique in integrated circuit routing design. The Steiner nodes serve as optional nodes to link each sewer discharge node and flow to sinks on an optimal sewer layout. Those nodes are utilized for minimizing the total cost required for constructing pipes. All the nonlinear constraints and the objective function are transformed into a simple linear format. The optimization model analysed three types of objective function conditions-solely considering the pipe cost, solely considering the ground-cutting cost, and combining both considerations-to illustrate the importance of considering all conditions to obtain an optimal sewer layout design. The proposed optimization model can save more than 38.83% of the cost required to realize the expert's manual sewer layout design.

The aim of this paper is to understand the designing of underground sewerage network using SewerGEMS and different components of a sewerage network. Other objectives include basic knowledge of a rural sewerage scheme from its base i.e study of a Rural Underground Scheme. In the proposed research paper, a study on the same topic has been made.

International Journal for Research in Applied Science and Engineering Technology, 2021

Globally there has been a massive increase in the population Numbers, especially in India the rate of Increase is on a higher side. To inculcate The rising population, cities expand giving Rise to urbanization. This calls for Provision of various basic public service Amenities such as water pipeline, drainage Pipeline, roads, street lights, etc. The Waste water collection/drainage system is One if the basic public service entities Needed to maintain proper hygiene in a Locality since sanitation is a primary Aspect of public health in a society. This Project aims at modelling a Geographical Information System (GIS) based waste Water drainage system using QGIS and Bentley SewerGEMS software. The Village situated in the southern eastern Region of the city of Pune, Holkarwadi was Selected as it has been recently included in City limits and therefore has a need of a Well-designed waste-water drainage System.