An innovative greywater treatment system for urban areas ... - SuSanA

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Figure 12: Technical drawing of MBR tank; (HUBER SE, 2011a) To purify the greywater an ultrafiltration membrane from Polyethersulfone (PES) with a nominal pore diameter of 38 nm and a filter surface of 3.5 m 2 is installed, called MembranClearBox® (see Figure 13). The small pore size of the membrane retains all particles including bacteria and the majority of viruses. The module is submerged in the activated sewage sludge in the MBR tank. An aerator which is mounted on the bottom of the tank provides oxygen to keep the biological processes of microorganisms active and ensures continuous mixing within the container. Another aerator located directly under the membrane module produces scouring air to clean the surface. It is an intermittent process, where the air flows along the surface of the module, which avoids coating, clogging and fouling of the membrane. To purify the water permeate is drawn through the membrane by underpressure of the permeate pump. If the filling level is too low inside the tank, it is automatically detected by a sensor which turns the permeate pump off. Thus, the membrane is prevented from drying out, which would destroy it otherwise. Upon the occurrence of the lower level limit, the system switches to economy mode, which supplies the biology only with oxygen. The data of transmembrane pressure (pmax = - 350 mbar) and the flow of permeate is collected and supervised by online remote control. The withdrawal of excess sludge takes place every 4 weeks by a pump hanging at medium-height inside the container. Membrane module Permeate outflow Scouring air Membrane plates Scouring aerator Spacer Bacteria Membrane Viruses Plate Permeate suction Figure 13: Details of ultrafiltration membrane; (HUBER SE, 2011b; GEP - Freude am Wasser, 2007) 14
3. Storage tank for permeate: In the last step the purified water is transported via permeate pump into the storage tank. The container has a volume of 480 l, (see Figure 14). There is a level control probe installed. In case of a lack of process water in the tank, drinking water is automatically fed into it. In the storage tank there is the pump installed to supply the spray bar to clean the TURNY sieve. An additional pump provides the purified water for a further application within the research project, to flush the brownwater pre-treatment plant. Figure 14: Technical drawing of process water storage tank; (HUBER SE, 2011a) Detailed overviews of the technical components of the SANIRESCH greywater treatment plant are listed in the appendix chapter 6.1 (in German), including performance parameters and supplier data. 15
Page 1 and 2: Master’s Thesis AN INNOVATIVE GRE
Page 3 and 4: ABSTRACT In its German headquarters
Page 5 and 6: 3.7 Identification of global hotspo
Page 7 and 8: LIST OF TABLES Table 1: Overview of
Page 9 and 10: ABBREVIATIONS AHP Analytical hierar
Page 11 and 12: 1 INTRODUCTION In regions of the wo
Page 13 and 14: 2 MATERIALS AND METHODS 2.1 LITERAT
Page 15 and 16: To get an overview of chronological
Page 17 and 18: Table 2: Microbiological load of gr
Page 19 and 20: 2.1.5 TREATMENT TECHNOLOGIES Genera
Page 21 and 22: Figure 7: Ground plot of GIZ main b
Page 23: Figure 10: Schematic view of preced
Page 27 and 28: 2.4 GREYWATER TREATMENT VIA MBR TEC
Page 29 and 30: matrix that shows all objective cri
Page 31 and 32: � Socio-cultural criteria o Gener
Page 33 and 34: Only the legislative requirements f
Page 35 and 36: An important factor for the assessm
Page 37 and 38: equirements of purity (Sieghart, 20
Page 39 and 40: 2.5 METHOD TO IDENTIFY IDEAL INTERN
Page 41 and 42: Population per km 2 arable land: 0
Page 43 and 44: such as in densely populated areas.
Page 45 and 46: Table 13: International greywater t
Page 47 and 48: Due to the complexities, involved i
Page 49 and 50: 3.3 PLANT TECHNOLOGY IN ESCHBORN As
Page 51 and 52: humins, which are high molecular or
Page 53 and 54: 3.4 SANIRESCH RESEARCH PROJECT AND
Page 55 and 56: ut in a hotel the drain from shower
Page 57 and 58: Cleaning water for preceeding scree
Page 59 and 60: Water costs: In contrast to energy
Page 61 and 62: treatment plants in different circu
Page 63 and 64: 3.6 INVESTIGATION OF INTERNATIONAL
Page 65 and 66: “Dead Sea Spa” hotel/Jordan; (a
Page 67 and 68: In this comparison of three project
Page 69 and 70: In the Near East and North Africa m
Page 71 and 72: Table 26: Water quality index (WQI)
Page 73 and 74: 3.7.4 URBANISATION Country populati
Page 75 and 76:
Table 29: Ranking of countries idea
Page 77 and 78:
e based on legal, economic, socio-c
Page 79 and 80:
3.8 FUTURE PROSPECTS 3.8.1 LEGAL FO
Page 81 and 82:
4 CONCLUSIONS The membrane bioreact
Page 83 and 84:
5 REFERENCES Ackermann, K. (2010).
Page 85 and 86:
Herbst, H. (2008). Bewertung zentra
Page 87 and 88:
Rohr, T. (2004). Einsatz eines mehr
Page 89 and 90:
Hauptgebäude. In S. fbr15, Wassera
Page 91 and 92:
6.5 ENERGY PRICE (GROSS) IN GERMANY
Page 93 and 94:
6.8 UTILITY ANALYSIS (TRIMMED-DOWN
Page 95 and 96:
Identification of ideal internation
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
6.9 POSTER 94
Page 103:
EHRENWÖRTLICHE ERKLÄRUNG Ich vers
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