Wastewater Management
Indonesia is the world’s fourth most populous country, and its infrastructure is being rapidly developed to meet the growing needs of its urban population and the tourism industry. The Petanu water treatment plant is a key to ensuring a stable supply of clean water for south eastern Bali. The automation system that is to be installed at
the Petanu water treatment plant includes the FAST/ TOOLS SCADA 3 software package, the STARDOM network-based control system, analysers, and a variety of field devices such as ADMAG series magnetic flowmeters. Yokogawa Indonesia will be responsible for the entire project.
Wastewater transfer pipelines Meanwhile the central wastewater treatment plant of Lapuan Jätevesi, a Finnish company located in Lapua, west of Finland, treats the wastewater from three locations: Lapua, Nurmo and Kuortane. It also maintains municipal wastewater transfer pipelines from Nurmo and Kuortane to Lapua and the central wastewater treatment plant in Lapua. The process starts with the primary treatment where
the influent sewage water is strained to remove all large objects and the oxygen level of the water is increased to facilitate microbe activities. During this biological
treatment phase, the microbes in the wastewater are given suitable growing conditions in terms of temperature, oxygen level and nutrition. The next phase includes chemical secondary
sedimentation, where aluminium-based chemicals are added to the water from the biological treatment to prompt flocculation of slowly-degrading organic and other materials. In the last phase, the remaining sludge is treated by removing water from it. The water separated from the sludge is taken back to the beginning of the treatment process, and the solid sludge is taken to the Lakeuden Etappi biogas plant. The central wastewater treatment plant at Lapua
has just been upgraded. In terms of automation, the new solution includes six Modicon Premium controllers that are implemented with Monitor Pro v7.6 and are using Modbus TCP/IP over wireless via nine ProSoft Technology RadioLinx industrial Ethernet radios. About 2000 process variables are transiting over the wireless network. The company says this solution has helped it meet
the four targets of the project: ease of installation and maintenance; flexibility to adapt to fast changing regulation; improvement of the overall solution; and compliance with existing applications and methodologies. ■
Bartec Beamex Bekaert
Index of Advertisers – Process 31
BiLFINGER CD Automation CarlStahl
Containment Service Providers Conwed Plastics Coperion K-Tron Drytech International Edinburgh Sensors Endress + Hauser FLIR
Filter Spares Service Haws
Hillesheim
45 24 24 32 6
37 53 17 8
21
IFC 31 46 43 15
Hilliard Ho-Matic JWF Jacob Pipework Systems Keller Druck MCM Magnetrol Mercury HMI Moxa Mucon Opsis Rotork Russell Finex Schenck Process SpinTek Filtration Waukesha Bearings
Index of Advertisers – Chemical
Barriquand Bosch
56
www.engineerlive.com
8 4
Bronswerk Cashco
1 10
11 13
OBC 22 4
46 51 21 32 15 8
46 21 34 17 23
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58