Endress+Hauser South Africa is well established in all areas of water and wastewater treatment with a network of global support. These competencies include monitoring the quality of water bodies and the treatment and distribution of drinking water. As the various regions in South Africa are running out of surface water, coastal towns and cities will turn to desalination of sea water where inland towns and cities will turn to water-reuse to supplement their water supply.
Reliable solutions from a single supplier
The use of membrane filtration is key to these solutions and Endress+Hauser has proved to be a reliable partner to various membrane plant builders, whether in desalination or water re-use. The company also has a large footprint in the treatment and optimisation of municipal as well as industrial wastewater. Robust and user friendly measurement technology is essential to the reliable operations of water works and sewage treatment plants. Endress+Hauser offers a modern portfolio of measurement devices that makes it possible to find an ideal solution for any application from one single source.
Platform technologies such as Proline (flow), Liquiline (liquid analysis) and Cerabar (pressure) offer a host of benefits for planners, system integrators, operators and service personnel. These include reduced complexity due to standardisation of similar measuring points, easy multiplication of device settings for comparable measuring points and optimised stockholding of modular replacement parts for device platforms.
The correct selection of a measuring point starts at the design stage of a project. As part of the Endress+Hauser industry focus and expertise, assistance and consulting services can be supplied early in the project stages. This will assist in selecting the correct and most cost-effective solution from the extensive and flexible product basket. Also included is the selection of the most suited measurement principle to a particular process, as well as selecting the correct segmented product according to required features and capabilities, such as advanced diagnostics. Smart system components such as data managers and loggers complete the measurement basket and allow smart solutions in respect of data storage, individual preference for I/O types, quantities and linking to various communication protocols, which include HART, WirelessHART, Profibus, Foundation Fieldbus and Ethernet.
Energy efficiency
As energy consumption forms a large part of the overall operating cost of a wastewater treatment plant, it is important to monitor this continuously. The transparent presentation of energy consumption needs to be broken down into individual processes in order to benchmark the energy optimisation. Endress+Hauser has developed a smart energy monitoring solution for sewage treatment plants based on the advanced and improved Memograph RSG45. As an energy manager, the RSG45 collects, calculates and visualises the defined key performance indicators of the plant. In conjunction with the intuitive Field Data Manager software (FDM), remote access and further processing becomes easy to implement. The benefits of energy monitoring include:
• Optimised plant performance.
• Increased pump efficiency.
• Monitoring electricity generation (where biogas is used).
• Improved aeration performance.
• Customised KPIs.
Wastewater treatment
Biological wastewater treatment is a core process in any modern sewage processing plant. It involves the decomposition of organic loads and nutrients that can cause eutrophication in downstream water bodies. Aeration of the aerobic treatment step is however a major cost factor, with at least 50% of electrical energy being consumed here. It has already been proved by many operators that a strategically implemented aeration control system can improve both effluent discharge values as well as energy consumption. In many places phosphate precipitation is also necessary, but this also represents a significant cost factor. Load-sensitive phosphate precipitation is an effective solution for cost efficiency and safe phosphate discharge levels.
The Endress+Hauser load sensitive controller, the Liquiline Control CDC81, using ammonia and nitrate levels in the process, aims to achieve safe effluent levels as a first priority and also significantly reduce energy consumption. The controller can be rapidly commissioned and supplies identical HMIs for up to 3 biological treatment zones. It provides real-time control, fieldbus communication, fail-safe modes according to process impact, event and alarm messaging and data logging. It is able to control and optimise continuous aeration, intermittent aeration and precipitant dosing for phosphate removal. (Visit http://bit.ly/1RYiMEj)
Endress+Hauser South Africa will be launching the Liquiline Control CDC81 at WISA 2016 in Durban from 15 to 19 May 2016.
For more information contact Hennie Pretorius, Endress+Hauser, +27 (0)11 262 8068, [email protected], www.za.endress.com
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