Horizontal Flow Biofilm Reactor (HFBR) Wastewater Treatment System

Document Sample
Horizontal Flow Biofilm Reactor (HFBR) Wastewater Treatment System Powered By Docstoc
					Horizontal Flow Biofilm Reactor
            (HFBR)
Wastewater Treatment System


           Michael Rodgers
           Eoghan Clifford
    Civil Engineering Department
             NUI, Galway
                Presentation
•   1. Problems
•   2. Markets
•   3. Other systems
•   4. HFBR system
•   5. Advantages
•   6. Way forward
•   7. Contacts
•   8. Journal Papers
              1. Problems
• Every living body generates wastewaters.
• These are not always treated properly.
• If untreated, health and pollution problems
  arise.
• Need to comply with EU Nitrates Directive,
  EU Water Framework Directive, and Local
  Authority, Fisheries and EPA
  requirements.
             2. Market in Ireland
• About 30,000 single house systems/ year
  @ € 4000/system :- 10% = € 12,000,000.

• Small scale systems for hotels, villages etc.

• Farms

• Industry

• Large scale systems for towns and cities ?
                     2. Markets
           Small scale treatment systems
•   Year      UK      Ger.    Fra.    It.     Iberia    Irl.

•   2011      5,100   16,800 6,300    2,600    7,100    1,100

    Unit sales of Packaged Wastewater Treatment Plants.



•   Year      UK      Ger.    Fra.    It.     Iberia    Irl.    USA

•   2011      120.5   111.1   124.2   55.3    120.7    32.      1,300

    Packaged Wastewater Treatment Plant Market ($ m).
          3. Other Systems
• Septic tank system – needs suitable soil-
  may not remove much nitrogen

• Mechanical aeration system – needs a
  compressor – may not remove much
  nitrogen
4. Horizontal Flow Biofilm Reactor
              (HFBR)
  Wastewater Treatment System
 4. Geotextile HFBR – straight through
                 INFLUENT




8 no. 25mmhigh Terram
geotextile sheets




18 no. 11mmhigh Terram
geotextile sheets




                            EFFLUENT

                                       Total height = 400 mm
4. HFBR with step feed


                   200 mm




                   100 mm
4. HFBR results with step feed (Dairy WW)
 (mg/l)                        NH4-N   NO3-N   T-N    PO4-P   COD

 Synthetic dairy wastewater    127.2   0.3     288    78.2    2395.5

 Step feed:       Effluent     1.2     67.1    72.0   43.3    63.2
 0.32 l/d
                  Removal      99.1%   ----    75%    44.6%   97.4%
                  efficiency
                               CO D f c onc entration (m g/l)
                      0   500          1000        1500         2000   2500
               0
               2
               4
 Sheet No.     6
               8
              10
              12
              14
              16

                                    TN concentration (mg/l)
                  0       60           120          180         240     300
             0
             2
             4
Sheet No.




             6
              8
             10
             12
             14
             16
                       HFBR


In
                                                 out
                           HFBR




     Septic tank


                   Could be built in one unit.
                        5. Advantages
•   Simple and flexible

•   Passive aeration - no mechanical device

•   Nitrogen removal

•   Units can be stacked to reduce footprint

•   Technology can also be used for biologically processing substrates into high
    quality products for the food and pharmaceutical industries

•   Materials available off shelf

•   Educational equipment -
           6. Way forward
• License to wastewater treatment company
  in the market

• Education equipment supplier

• Odour control – up flow

• Food and pharmaceutical industries
              7. Contact
• Dr Michael Rodgers
• BE, MEngSc, MSc, PhD, CEng, FIEI,
  Chartered Engineer
• Senior Lecturer in Civil Engineering
• National University of Ireland, Galway
• Tel. 353-91-492219: Fax. 353-91-494507
• e-mail: michael.rodgers@nuigalway.ie
  7. Other NUI, Galway contacts

• Daniel O Mahony: Technology Transfer Office
• Neil Ferguson: Technology Transfer Office
                 8. Journal Papers
•   Rodgers M., Xiao L.W. and Muqueen J. (2007). Horizontal-flow biofilm system with
    step feed for nitrogen removal. Journal of Environmental Engineering (ASCE).
    Volume 133 (6) (in press)
•   Rodgers, M., DePaor, D. and Clifford, E. (2006). Dairy washwater treatment using
    a horizontal flow biofilm system. Journal of Environmental Management
    (accepted).
•   Rodgers M., Lambe A. and Xiao L.W. (2006). Carbon and nitrogen removal using
    a novel horizontal flow biofilm system. Process Biochemistry. Volume 41 (11), pp.
    2270-2275.
•   Xiao L.W., Rodgers M. and Mulqueen J. (2007). Organic carbon and nitrogen
    removal from a strong wastewater using a denitrifying suspended growth reactor
    and a horizontal-flow biofilm reactor. Bioresource Technology. Volume 98, pp.739-
    744.
•   Rodgers, M., M.G. Healy, and J. Prendergast. 2006. A novel hybrid filter for the
    treatment of septic tank effluent – ASCE Journal of Environmental Engineering.
    Vol. 132, No. 7.
•   Rodgers M., Xiao L.W. and Mulqueen J. (2006). Synthetic Dairy Wastewater
    Treatment Using a New Horizontal-Flow Biofilm Reactor. Journal of Environmental
    Science and Health, Part A: Toxic/Hazardous Substances & Environmental
    Engineering. Volume 41 (5), pp. 751-761.