Environmental, Water and Agricultural Engineering Transportation and Geo-Information Engineering Structural Engineering and Construction Management

Eran Friedler, Associate Professor

Environmental, Water and Agricultural Engineering
Phone: +972-4-8292633
Fax: +972-4-8228898
Email: eranf@tx.technion.ac.il
Address: Faculty of Civ. and Env. Eng., Technion - Israel Inst. of Technology; Haifa 32000, Israel
Home Page: http://cee.technion.ac.il/eranf
Research Interests  
Development of alternative water sources as part of sustainable management of water in
the urban sector.
Extensive wastewater treatment systems.
Processes occurring in sewer systems.
Processes affecting water quality in catchment basins.


1994 DSc in Env. Eng. Dept. of Env. & Wat. Resourc. Eng., Faculty of Civil Eng., Technion. (Direct Doctorate Course)
1986 BSc in Agr. Sci. Specialised in Soil and Water Sci.. Faculty of Agr., Hebrew Univ. CUM LAUDE


3-9.2013 Visiting Professor, Centre of Wat. Systems. College of Eng., Math. & Physical Sci., Univ. of Exeter, UK.
2010- on Associate Professor, Faculty of Civil & Env. Eng., Technion.
2001-2010 Senior lecturer, Faculty of Civil & Env. Eng., Technion
1998-2001 Adjunct lecturer, Faculty of Civil Eng., Technion.
1999-2003 Adjunct lecturer, Dept. of Natural Resources & Env. Manage., Faculty of Social Sci. & Math., Haifa Univ

Adjunct lecturer, The Centre for Env. Studies, Western Galilee College.


Postdoctoral fellow (part time), Faculty of Agr. Eng., Technion.


Postdoctoral fellow, Dept. of Civil Eng., Imperial College of Sci., Tech. & Medicine, London, UK.

1988-1993 Teaching assistant, Faculty of Civil Engineering, Technion.

















1996-2001  Co-director, Juanico & Friedler - Mediterranean LTD.



2014 - on       Vice Dean for Teaching and Undergraduate Studies, Faculty of Civil & Env. Eng., Technion

2003-2010       Member of the judges' panel in the academic staff court for discipline.

2008-2012       Academic Coordinator - Environmental Eng. course of studies (undergraduate)

2008-2012       Head - Departmental teaching committee (undergraduate), Dept. of Env., Wat. & Agr. Eng.

2012- on       Water Forum Coordinator - Shmuel Neaman Inst. for Advanced Studies in Sci. and Tech.




R. Wang (MSc). Computational modelling of sewer flow quantity and quality. Dept. of Civ. Eng., Imperial College of Sci., Tech. &Medicine, UK. Primary supervisor: D. Butler (Imperial College), Co-supervisor: E. Friedler.


 Y. Yaxas (MSc). Pollutant concentration of domestic wastewater inflows. Dept. of Civ. Eng., Imperial College of Sci., Tech. &Medicine, UK. Primary supervisor: D. Butler (Imperial College), Co-supervisor: E. Friedler.


Pisanty E. (MSc). Analysis of the relationship between construction or upgrade costs of wastewater treatment plants and their design capacity (Final Project).


Latman S. (MSc). Comparison between local and regional solution for wastewater treatment and reuse: Ecological and economical aspects (Final Project, Haifa Univ.). Primary Supervisor: E. Friedler, Consultant: N. Greenboum (Haifa Univ.)


Sagiv A. (MSc). Modelling H2S emission in gravity sewers. Primary Supervisor: O. Lahav, Co-supervisor: E. Friedler.


Segal E. (MSc). Study of engineering, economical and environmental aspects of various alternatives for treatment and disposal of excess sludge from the grater Tel-Aviv wastewater treatment plant (Haifa Univ.). Primary Supervisor: E. Friedler, Co-supervisor: N. Becker (Haifa Univ.).


Kovalio R. (MSc). Study of three systems for treatment and reuse of greywater for toilet flushing.


Firer D. (MSc). Investigation of the Use of Iron Salts to Control Odour and Corrosion in Urban Sewer Systems. Primary supervisor: E. Friedler., Co-supervisor: O. Lahav.


Shwatzman (Sofair) Z. (MSc). Reliability assessment of in-house greywater reuse. Primary supervisor: E. Friedler, Co-supervisor: A. Ostfeld.


Gilboa Y. (MSc). Study of the effects of disinfection with UV irradiation on the microbial quality of greywater. Primary supervisor: E. Friedler. Advisor: R. Armon.


Goldwasser K. (MSc). Development of management model for Lake Kinneret using AVGWLF. Primary supervisor: A. Ostfeld, Co-supervisor: E. Friedler.


Opher T. (MSc). Development of a data driven model for estimating pollutant levels in highway stormwater runoff. Primary supervisor: E. Friedler, Advisor: A. Ostfeld.


Dinerman E. (MSc). Modelling MTBE and BTEX in Lake Kinneret as a tool for the assessment of the risk to the water quality in the lake. Primary supervisor: E. Friedler. Advisor: D. Markel (Water Commission).


Aizenchtadt E. (PhD). Reliability approaches to bio-environmental systems on the base of wastewater treatment plants. Primary supervisor: D. Ingman (Quality Assurance and Reliability Unit), Co-supervisor: E. Friedler.


Meir A. (MSc). Comparative study of the effect of disinfection by UV irradiation and chlorination on clogging of drip irrigation system fed with tertiary effluent (Final Project).


Asheri T. (MSc). The effect of low intensity ultrasonic irradiation on algae population and biological diversity in different water bodies. Primary supervisor: E. Friedler. Co-supervisor: R. Porat (Mekorot, Nat. Water Company).


Eid K. (MSc). Quantification calibration and verification of QUEST method as a tool for the assessment of exfiltration from gravity sewers. Primary supervisor: E. Friedler. Advisor: O. Lahav.


Yapman I. (MSc). Electrocoagulation as a part of greywater treatment and reuse.


Pesach N. (MSc). Determination of surfactants concentrations in estuaries and seawater and assessment of their effects on corals. Primary supervisor: E. Friedler Co-supervisor: N. Kress (IOLR).


Yardeni A. (MSc). On-line biomonitoring for pollution detection in potable water network with the FishToximeter - A Video based early warning system. Primary supervisor: E. Friedler Co-supervisor: R. Porat (Mekorot, Nat. Water Company).


Khodorkovsky M. (MSc). Investigation of the spatial and seasonal distribution of selected pesticides (chlorpyrifos, methidathion and endosulfan) and their degradation products in the streams of the Hula watershed. Primary supervisor: Y. Dubowski Co-supervisor: E. Friedler.


Muklada H. (MSc). On-site rainwater harvesting as an alternative water source for urban areas. (Final Project).


Dekel A. (MSc). Study of microorganisms community structure by molecular methods as a tool for developing an attached growth treatment process for greywater. Primary supervisor: E. Friedler Co-supervisor: M. Halpern (Haifa Univ.)


Zarchi E. (MSc). Polyaluminum Chloride as an Alternative to Alum for Direct Filtration of Drinking Water.Primary supervisor: E. Friedler Co-supervisor: M. Rebhun.


Penn R. (MSc). Investigation and quantification of the influence of on-site urban greywater reuse on sewer systems and wastewater treatment plants.


Gilboa Y. (PhD). The effects of anthropogenic activities on water quality in Lake Kinneret. Primary supervisor: E. Friedler Co-supervisor: G. Gal (Kinneret Limnological Laboratory, IOLR)


Kovaliov M. (MSc). Infrared rays embedded fish instrument as a tool for on-line detection of pollution intrusion into potable water systems.Primary supervisor: E. Friedler Co-supervisor: R. Porat (Mekorot, Nat. Water Company).


Dinerman E. (PhD). Fate of Chlorpyrifos under semiarid conditions and the impact on its loss from orchard soil surface. Primary supervisor: E. Friedler Co-supervisor: Y. Dubowski.


Barkai-Arbel Y. (MSc) Precursors removal and reduction of disinfection by-products formation by enhanced coagulation and sedimentation in the NWC system. Primary supervisor: E. Friedler; Co-supervisor: M. Rebhun; Advisor: L. Heller-Grosmann


Blanky M. (MSc) Legionella pneumophila in greywater - Quantification, removal during treatment and assessment of human exposure via aerosols.Primary supervisor: E. Friedler; Co-supervisor: M. Halpren (Haifa Univ.)


Shalev A. (MSc). Removal of Triclosan from greywater by innovative V-UV/UV-C process. Primary supervisor: E. Friedler; Co-supervisor: Y. Dubowski


Steynberg D. (MSc). Simulating the diurnal pattern of domestic water demand on a micro-component scale - based on smart metering and data driven modeling. Supervisor: E. Friedler; Advisor: A. Ostfeld

2015 Penn R. (PhD). Impacts of on-site greywater reuse and water saving on urban wastewater systems - an integrated simulation approach. Supervisor: E. Friedler; Advisor: M. Schuetze (ifak, Magdeburg, Germany)



(Students appear in italics)



Friedler E., 1993. Mathematical model of wastewater stabilization reservoirs. DSc research thesis. Dept.of Env. and Wat. Resourc. Eng., Faculty of Civil Engineering, Technion.


Refereed papers in professional journals (copies available upon request)

  1. Juanico M., Friedler E.,1994.Hydraulic age distribution in perfectly mixed non steady-state reactors. ASCE J. of Env. Eng., 120(6): 1427-1445.
  2. ButlerD.,Friedler E., Gatt K., 1995.Characterising the quantity & quality of domestic wastewater inflows. Wat. Sci. Tech., 31(7): 13-24.
  3. Friedler E., Brown D. M., Butler D., 1996. A study of WC derived sewer solids. Wat. Sci. Tech., 33(9): 17-24.
  4. Friedler E., Butler D., 1996. Quantifying the inherent uncertainty in the quantity and quality of domestic wastewater. Wat. Sci. Tech., 33(2): 65-78.
  5. Friedler E., Butler D., Brown D. M., 1996. Domestic WC usage patterns. Building & Env., 31(4): 385-392.
  6. Friedler E., Juanico M., 1996. Treatment and storage of wastewater for agricultural irrigation. Int. Wat. & Irrig. Rev., 16(4): 26-30.
  7. Green M., Friedler E., Roskol Y., Safrai I., 1997. Investigation of alternative method for nitrification in constructed wetlands. Wat. Sci. Tech., 35(5): 63-70.
  8. Green M., Friedler E., Safrai I., 1998. Enhancing nitrification in vertical flow constructed wetlands utilising a passive air pump. Wat. Res., 32(12): 3513-3520
  9. Almeida M. C., Butler D., Friedler E., 1999. At-source domestic wastewater quality. Urban Wat., 1: 49-55.
  10. Friedler E., 1999. The Jeezrael Valley project for wastewater reclamation and reuse. Wat. Sci. Tech., 40(4-5): 347-354.
  11. Juanico M., Friedler E., 1999. Wastewater reuse for river recovery in semi-arid Israel. Wat. Sci. Tech., 40(4-5): 43-50.
  12. Friedler E., 2001. Wastewater reuse - An integral part of water resources management: Israel as a case study. Wat. Policy, 3(1): 29-39.
  13. Friedler E., Juanico M., Shelef G., 2003. Simulation model of wastewater stabilization reservoirs. Ecol. Eng., 20(2): 121-145.
  14. Friedler E., 2004. Quality of individual domestic greywater streams and its implication on on-site treatment and reuse possibilities. Env. Tech., 25(9): 997-1008.
  15. Friedler E., Galil N. I., Kovalio R., 2005. On-site greywater treatment and reuse in multi-storey buildings. Wat. Sci. Tech., 51(10): 187-194.
  16. Friedler E., Hadari M., 2006. Economic feasibility of on-site greywater reuse in multi storey buildings. Desalination, 190: 221-234.
  17. Friedler E., Kovalio R., Ben-Zvi A., 2006. Comparative study of the microbial quality of greywater treated by three on-site treatment systems. Env. Tech., 27(6): 653-663.
  18. Friedler E., Lahav O., 2006. Centralised Urban Wastewater Reuse: What is the Public Attitude? Wat. Sci. Tech., 54(6-7): 423-430.
  19. Lahav O., Binder A., Friedler E., 2006. A different approach for predicting reaeration rates in gravity sewers and completely mixed tanks. Wat. Env. Res., 78(7): 730-739.
  20. Lahav O., Sagiv A., Friedler E., 2006. A different approach for predicting H2S(g) emission rates in gravity sewers. Wat. Res., 40: 259-266.
  21. Friedler E., Lahav O., Jizhaki H., Lahav T., 2006. Study of urban population attitudes towards various wastewater reuse options: Israel as a case study. J. of Env. Manage., 81(4): 360-370.
  22. Friedler E., Pisanty E., 2006. Effects of design flow and treatment level on construction and operation costs of municipal wastewater treatment plants and their implications on policy making. Wat. Res., 40(20): 3751-3758.
  23. Geller Y., Zimmerman R., Friedler E., 2007. Evaluation of the Hydraulic Performance of the Regional Sewer Network of the Greater Tel-Aviv Metropolitan Area (Israel). Wat. Practice & Tech., 2(2). (7 p. E-journal)
  24. Friedler E., Katz I., Dozorets C. G., 2008. Chlorination and coagulation as pretreatments for greywater desalination. Desalination, 222: 38-49
  25. Aizenchtadt E., Ingman D., Friedler E., 2008. Quality Control of Wastewater Treatment: A New Approach. Europ. J. of Operational Res., 189: 445-458
  26. Gilboa Y., Friedler E., 2008. UV disinfection of RBC treated light greywater effluent: kinetics, survival and regrowth of selected microorganisms. Wat. Res., 42(4-5): 1043-1050.
  27. Firrer D., Friedler E., Lahav O., 2008. Control of sulfide in sewer systems by dosage of iron salts: comparison between theoretical and experimental results. Sci. of the Total Env., 392: 145-156.
  28. Friedler E., 2008. The water saving potential and the socio-economic feasibility of greywater reuse within the urban sector - Israel as a case study. Int. J. of Env. Studies, 65(1): 57-69.
  29. Friedler E., Shwartzman Z., Ostfeld A., 2008. Assessment of the reliability of an on-site MBR system for greywater treatment and the associated aesthetic and health risks. Wat. Sci. Tech., 57(7): 1103-1110.
  30. Krasnits E., Friedler E., Sabbah I., Beliavski M., Tarre S., Green M., 2009. Spatial distribution of microbial populations in a well established constructed wetland treating municipal wastewater. Ecol. Eng., 35: 1085-1089.
  31. Opher T. Ostfeld A., Friedler E., 2009. Modelling highway runoff pollutants levels using a Data Driven Model. Wat. Sci. Tech., 60(1): 19-28.
  32. Opher T., Friedler E., 2009. A preliminary coupled MT-GA model for the prediction of highway runoff quality. Sci. of the Total Env., 407: 4490-4496.
  33. Aizenchtadt E., Ingman D., Friedler E., 2009. Analysis of the long-term performance of an on-site greywater treatment plant using novel statistical approaches. Urban Wat. J., 6(5): 341-354.
  34. Gilboa Y., Friedler E., Gal G., 2009. Adapting empirical equations to Lake Kinneret data by using three calibration methods. Ecol. Model., 220: 3291-3300.
  35. Friedler E., Gilboa Y., 2010. Performance of UV disinfection and the microbial quality of greywater effluent along a reuse system for toilet flushing. Sci. of the Total Env., 408(9): 2109-2117.
  36. Maimon A., Tal A., Friedler E., Gross A., 2010. Safe on-site reuse of greywater for irrigation - a critical review of current guidelines. Env. Sci. Tech., 44: 3213-3220.
  37. Opher T., Friedler E., 2010. Factors affecting highway runoff quality. Urban Wat. J., 7(3): 155-172.
  38. Friedler E., Alfiya Y., 2010. Physicochemical treatment of office and public buildings greywater. Wat. Sci. Tech., 62(10): 2357-2363.
  39. Friedler E., Yardeni A., Gilboa Y., Alfiya Y., 2011. Disinfection of greywater effluent and regrowth potential of selected bacteria. Wat. Sci. Tech., 63(5): 931-940.
  40. Dinerman E., Dubowski Y., Friedler E., 2011. Fuel derived pollutants and boating activity patterns in the Sea of Galilee. J. of Env. Manage., 92: 3002-3010.
  41. Opher T., Rom M., Kronaveter L., Friedler E., Ostfeld A., 2012. Some observations on Biofouling prediction in pipelines using model trees and artificial neural networks versus logistic regression. Urban Wat. J., 9(1): 11-20.
  42. Alfiya Y., Damti O., Stoler-Katz A., Zoubi A., Shaviv A., Friedler E., 2012. Potential impacts of on-site greywater reuse in landscape irrigation. Wat. Sci. Tech., 65(4): 757-764.
  43. Penn R., Hadari M., Friedler E., 2012. Effects of greywater reuse on domestic wastewater quality and quantity. Urban Wat. J., 9(3): 137-148.
  44. Penn R., Schütze M., Friedler E., 2013. Modelling the effects of on-site greywater reuse and low flush toilets on municipal sewer systems. J. of Env. Manage., 114: 72-83.
  45. Olsson O., Khodorkovsky M., Gassmann M., Friedler E., Schneider M., Dubowski Y., 2013. Fate of pesticides and their transformation products: First Flush effects in a semi-arid catchment. CLEAN - Soil, Air, Water, 41(2): 134-142.
  46. Becker N., Friedler E., 2013. Integrated hydro-economic assessment of restoration of the Alexander-Zeimar River (Israel - Palestinian Authority). Regional Env. Change, 13: 103-114.
  47. Alfiya Y., Gross A., Sklarz M. and Friedler E., 2013. Reliability of onsite greywater treatment systems in Mediterranean and arid environments - A case study. Wat. Sci. Tech., 67(6): 1389-1395.
  48. Zarchi I., Friedler E., Rebhun M., 2013. Polyaluminum Chloride as an Alternative to Alum for the Direct Filtration of Drinking Water. Env. Tech. ., 34(9): 1199-1209
  49. Penn R., Friedler E., Ostfeld A., 2013. Multi-objective evolutionary optimization for greywater reuse in municipal sewer systems. Wat. Res., 47: 5911-5920.
  50. Gassmann M., Khodorkovsky M., Friedler E., Dubowki Y., Olsson O., 2014. Uncertainty in the river export modelling of pesticides and transformation products. Env. Model. & Soft., 51: 35-44.
  51. Matos C., Friedler E., Monteiro A., Rodrigues A., Teixeira R., Bentes I., Varajão J., 2014. Academics perception towards various water reuse options: University of Trás-os-Montes e Alto-Douro - UTAD Campus (Portugal) as a case study. Urban Wat. J., 11(4): 311-322. 
  52. Penn R., Schuetze M., Friedler E., 2014. Assessment of the effects of greywater reuse on gross solids movement in sewer systems. Wat. Sci. Tech., 61(1): 99-105.
  53. Maimon A., Friedler E., Gross A., 2014. Parameters affecting greywater quality and its safety for reuse. Sci. of the Total Env., 487: 20-25.
  54. Oron G., Adel M., Agmon, V., Friedler E., Halperin R., Leshem E., Weinberg D., 2014. Greywater use in Israel and worldwide: standards and prospects. Wat. Res., 58: 92-101.

  55. Gross A., Alfiya Y., Maimon A., Friedler E., 2014. Environmental impact of irrigation with greywater treated by recirculating vertical flow constructed wetlands in two climatic regions. Wat. Sci. Tech., 69(12): 2452-2459.

  56. Gilboa Y., Gal G., Friedler E., 2014. Defining limits to multiple and simultaneous anthropogenic stressors in a lake ecosystem - Lake Kinneret as a case study. Env. Model. & Soft.61: 424-432.

  57. Friedler E., Alfiya Y., Shaviv A., Gilboa Y., Harussi Y., Raize O., 2015. A continuous active monitoring approach to identify cross-connections between potable-water and effluent distribution systems. Env. Monitor. & Assess., 187(3).

  58. Morrison J., Friedler E., 2015. A critical review of methods used to obtain flow patterns and volumes of individual domestic water using appliances. Urban Wat. J., 12(4): 328-343.

  59. Blanky M., Rodriguez-Martinez S., Halpern M., Friedler E., 2015. Legionella pneumophila: from potable water to treated greywater: Quantification and removal during treatment. Sci. of the Tot. Env., 533: 557-565.

  60. Busgang A., Friedler E., Ovadia O., Gross, A., 2015. Epidemiological study for the assessment of health risks associated with greywater reuse for irrigation in arid regions. Sci. of the Tot. Env, 538: 230-239.

  61. Gilboa Y., Gal G., Markel D., Rimmer A., Evans B. M., Friedler E., 2015. Effect of land-use change scenarios on nutrients and TSS loads. Env. Processes, 2: 593-607.

  62. Rodríguez-Martíneza S., Blanky M., Friedler E., Halpern M., 2015. Legionella spp. isolation and quantification from greywater. MethodsX, 2: 458-462.

  63. Rodríguez-Martínez S., Dekel A., Aizenberg-Gershtein Y., Gilboa Y., Sharaby Y., Halpern M.,  Friedler E., 2016. Characterization of biofilm bacterial communities in a vertical unsaturated-flow bioreactor treating domestic greywater. Env. Processes, 3(2): 325-340.

  64. Gido B., Friedler E., Broday D., 2016. Liquid-desiccant vapor separation reduces the energy requirements of atmospheric moisture harvesting. Env. Sci. Tech., 50(15): 8362-8367.

  65. Opher T., Friedler E. (in press). Reducing inventory data requirements for scenario representation in comparative LCA, demonstrated on the urban wastewater system. Urban Wat. J.., 13(7): 759-772.

  66. Opher T., Friedler E., 2016. Comparative LCA of decentralized wastewater treatment alternatives for non-potable urban reuse. J. of Env. Manage., 182: 464-476.

  67. Muklada H., Gilboa Y., Friedler E. (in press). Stochastic modelling of the hydraulic performance of an onsite rainwater harvesting system in Mediterranean climate. Wat. Sci. Tech.: Wat. Supp.


Review papers and chapters in books (copies available upon request)

  1. Friedler E., 1999. Modelling. In: Reservoirs for wastewater storage and reuse: Ecology, performance & engineering design. Juanico M., Dor I. [Eds.], Springer-Verlag, pp. 105-144.
  2. Juanico M., Friedler E., 1999. Experiences outside Israel. In: Reservoirs for wastewater storage and reuse: Ecology, performance & engineering design. Juanico M., Dor I. [Eds.], Springer-Verlag, pp. 283-301.
  3. Juanico M., Friedler E., 1999. Hydraulic age distribution. In: Reservoirs for wastewater storage and reuse: Ecology, performance & engineering design. Juanico M., Dor I. [Eds.], Springer-Verlag, pp. 85-104.
  4. Friedler E., Galil N. I., 2003. Domestic greywater characterization and its implication on treatment and reuse potential. In Chapter 7: Effectiveness of water conservation options, In: Advances in Water Supply Management. Maksimovich C., Butler D., Memon F. A. [Eds.], A. A. Balkema Publishers, pp.535-544.
  5. Friedler E., Butler D., Alfiya Y., 2013. Wastewater composition. Chap. 17 in: Wastewater Treatment: Source Separation and Decentralization. Larsen T., Udert K., Lienert J. [Eds.], IWA Publishing, pp. 241-257.
  6. Friedler E., Gross A., 2014. Greywater reuse: risk identification, quantification and management. Chap. 10 in: Alternative Water Supply Systems. Memon F. A., Ward S. [Eds.], IWA publishing, pp. 193-216.


  1. Opher T., Friedler E., 2009. Development of a data driven model for estimating pollutant levels in highway stormwater runoff. VDM Verlag Dr. Muller Aktiengesellschaft & Co. KG, Germany, 144 p. (based on the MSc Research Thesis of T. Opher).
  2. Friedler E., Shaviv A., Zaide M., Gilboa Y., 2013. Water for nature and river restoration. Summary and recommendations of the 3rd Water Forum. Samuel Neaman Inst. for Advanced S\studies in Sci. and Tech. - Technion, The Grand Water Res. Inst. - Technion, Israel Water Authority. 61 p. (Heb.)


  1. Gross A., Maimon A., Alfiya Y., Friedler E., 2015. Greywater reuse. CRC Press, IWA Publishing. 301 p.

Book - Greywater reuse

More details about the book Download
Home |  Faculty Map |  Phone Directory |  Site Map |  Contact Us |  עברית
  Copyright © 2007 Civil. All Rights Reserved. Created by Catom web design