SCADA System in Wastewater Management

TJPRC, 2013

There is rapid growth in wide urban residential areas, therefore it is a need to provide better Water Supply. To fulfill the customer‟s requirement as well as to avoid faulty conditions there must be a better water supply management. Problem arises in the water supply management system due to pressure drop creation in channel or pump used to suck the water directly from the channel of their home street. This paper presents a prototype for water distribution system comprising a control system, communication means, piping, actuators, sensors and valves. This system utilizes a communication bus for controlling and monitoring water flow through the piping via control of the actuator and valves. Control System is further coupled to Supervisory Control & Data Acquisition (SCADA) unit. This paper focuses particularly to a control system for controlling and monitoring components within a Water Distribution System. This system includes Man Machine & Electrical Interfaces to PLC (Programmable Logic Controller) for transmitting/receiving control and status data over communication bus

International Journal of Computer Applications, 2013

Effective ground water management often requires models that can accurately predict system responses simultaneously and due to urban areas where population is increasing rapidly the water supply system should be more effective manner. In this paper we propose a SCADA base complete water supply system. By simulation it is shown that it is more effective than other system.

Water supply represents a vital problem for people, and this imposes the need to know the information regarding consumptions, resources and production. This implies a continuous supervision of the water supply process in order to allow any problem that could appear to be solved, and in the same time, to maintain normal functioning parameters. Proper solutions imply automation and monitoring architectures which contain: a supervision and control system for the real time installation, programmable logic controllers with basic functions (communication, adjusting, measuring, etc.) libraries, communication systems, standard interfaces or dedicated ones with sensors, electrical drive elements, measuring devices, etc. The informatics systems present the possibility of preventing some phenomenon, by analyzing and processing the data, leading to an optimum functioning and to important financial economies. In this way, the paper presents a SCADA system for the monitoring and control of the technological parameters in the water distribution stations, which will allow the optimum functioning of the pumping system, safety and endurance growth in the equipments and installations exploring, and so obtaining efficient energy usage and optimum administration of the drinkable water.

This paper focuses particularly to design a Ladder logic diagram a for monitoring qualities within a drinking water system. This system includes sensors & Electrical Interfaces to PLC (Programmable Logic Controller) for transmitting/receiving control and status data. The chosen water quality parameters , one is the physical quality parameter of a water is Turbidity which provides an inexpensive estimate of total suspended solids (NTU) concentration and one is chemical pH value which stands for "potential of Hydrogen". Exposure to extreme pH values results in irritation to the eyes, skin and mucous membrane and free chlorine CL concentration should be monitored to ensure that it is sufficient for its purpose .A program and a laboratory prototype were built to simulate the real water system. The research was compared with water and Environmental research center of MOST.

2014

Reverse osmosis (RO) is proved to be the most reliable, cost effective, and energy efficient in producing fresh water compared to other desalination technologies. Today's Reverse Osmosis plants are a widely used application of water treatment engineering all over the world, applied for water conservancy projects, emerged by the technology of automation control system is to ensure safe, continues, high quality water supply to municipal and for multipurpose usage in Industries. This paper represents a locally developed customized monitoring and controlling system for a typical generalised Reverse Osmosis Desalination plant which mostly used in industries. This work illustrates an integrated automation system which can facilitate monitoring and controlling of entire Reverse Osmosis plant from one PC. This paper describes how automation of Industrial Reverse Osmosis plant is done using PLC & SCADA.

This research developed a SCADA model for water management in a tank that is utilized for regulating and controlling power production and distribution automation for energy quality. The goal of this work is to create a model for water change controlled by a motor to handle the speed of filling and discharging the water within the tank, and as a water management procedure, such procedure will be performed by using the PLC controller connected to an HMI screen to achieve reliable management. The protocol utilized is the Modbus-based TCP protocol, which is suitable for low-cost systems and models. The suggested methodology may be used in big water tank stations to manage filling operations automatically and efficiently. In the future, the management method might be done wirelessly by employing a client software application with a specialized configuration.

The industrial control systems, which include supervisory control and data acquisition (SCADA) systems, distributed control systems, and other smaller control system configurations such as skid-mounted programmable logic controllers are often used in the industrial control sectors. The SCADA systems are generally used to control dispersed assets using centralized data acquisition and supervisory control. The SCADA systems are also distributed systems that are used to control geographically dispersed assets, which are often scattered over thousands of square kilometers, where centralized data acquisition and control are critical for system operation. They are commonly used in distribution systems such as water distribution and wastewater collection systems, oil and gas pipelines, electrical power grids, and railway transportation systems. In this article, the SCADA system used in the Yuvacik Dam and Reservoir operation, which is located in Kocaeli province of Turkey is reported and the problems associated with the system operation and their solutions are discussed. Keywords: Water resources; The effective and real time control of water resource; Dam management by SCADA; Problems and solutions

Proceedings of the Water Environment Federation, 2003

Real-time process control networks traditionally have been designed to be physically separate, optimizing real-time performance by separating business network communications and ensuring real-time reliability requirements. Due to large quantity of data, file sizes (graphic or video files), and network speed required for process control data, a separate network was often designed to ensure ability to meet the accuracy and reliability needs of process control. Pima County Wastewater Management (PCWM), with the help of EMA, determined network technology had advanced sufficiently to allow combining process control and business communications to simplify network administration and security without compromising the performance and reliability of the County's process control system. The network design to optimize physical network reliability at Ina Road Wastewater Treatment Plant (WWTP) is complete and upgraded network equipment has been installed and configured. The network and process control system at Ina Road went live in December 2002, with all remaining PLC/HMI local control segments are planned for completion by September 2003. Use to-date shows that the new network technology supports seamless integration of real-time process control networks with business networks. This integration is achieved without sacrificing performance or reliability requirements of real-time process control.

In today's world rapid growing urban residential areas, to avoid scarcity of water problems and requirements of consumers, therefore it is supposed to supply adequate water distribution networks are managed automatically. Along with this another problem in the water supply system is that public is using suction pumps to suck the water directly from the home street pipeline. The best way to improve the automation and monitoring architectures which contain a supervision and control system for the real time installation, programmable logic controllers with basic functions communication systems, standard interfaces or dedicated ones with proximity sensors, electrical drive elements, measuring devices, etc. In this project it is proposed to develop the PLC & SCADA based water monitoring and theft prevention. Control System is further coupled to SCADA unit .This paper focuses particularly to a control system for controlling and monitoring within a Water Distribution System. Process automation system based upon utilization of an industrial PLC and PC systems including all the network components represents the best way to improve the water distribution technological process.

The increasing awareness of water management problems has resulted in a need for information in ground water flow and distrib ution. There have been various approaches to design water monitoring networks, some of these designs have not been effective and reliable. Optimization of a monitoring network requires that the system be organized and structured with respect to the number of locations of sampl ing points. Monitoring and control technologies are indispensable for the safe utilization of water. They allow for the surveillance of source water quality, quantity and the detection of threats, thus defining the boundary conditions for the subsequent prevention and providing earl y warning in case of unexpected contaminations or overflow. This paper therefore presents a design of a SCADA monitoring system with a with a radi o telemetry techniques to monitor the distribution and flow of water from the source to some points.