WATER MANAGEMENT INITIATIVE (WMI) Al-Me’rad/West Jerash WWTP Situation Analysis May Al-M2017e’r This publication was produced for review by the United States Agency for International Development. It was prepared by Tetra Tech. CONCEPT PARTY DATE First draft submitted WMI May 23, 2017 Concurrence Received WAJ October 3, 2017 Final version submitted WMI September 25, 2018 Final version approved USAID October 16, 2018 This document was produced for review by the United States Agency for International Development. It was prepared by Tetra Tech under the USAID Water Management Initiative (WMI) Contract No. AID-278-C-16-00001. This report was prepared by: Tetra Tech 159 Bank Street, Suite 300 Burlington, Vermont 05401 USA Telephone: (802) 658-3890 Fax: (802) 495-0282 E-Mail: [email protected] Tetra Tech Contacts: José Valdez, Chief of Party, [email protected] David Favazza, Project Manager, [email protected] All photos are by Tetra Tech unless otherwise noted. Al-Me’rad/West Jerash WWTP Situation Analyses 2 WATER MANAGEMENT INITIATIVE (WMI) AL-ME'RAD WASTEWATER TREATMENT PLANT SITUATION ANALYSIS Activity 4.2.1 MAY 2017 DISCLAIMER The author’s views expressed in this publication do not necessarily reflect the views of the United States Agency for International Development or the United States Government. Al-Me’rad/West Jerash WWTP Situation Analyses 3 TABLE OF CONTENTS LIST OF TABLES ...................................................................................................6 TABLE OF FIGURES .............................................................................................6 ACRONYMS ...........................................................................................................7 EXECUTIVE SUMMARY ...............................................................................................8 1 BACKGROUND ..................................................................................................... 10 2 INTRODUCTION ................................................................................................... 11 3 TREATMENT PLANT FACILITIES ............................................................................. 16 3.1 PRE-TREATMENT..................................................................................................................16 3.1.1 1NLET WORKS ....................................................................................................................................... 16 3.1.2 COARSE AND FINE SCREENS ........................................................................................................... 16 3.1.3 AERATED GRIT AND GREASE CHANNELS FOR SAND AND GREASE REMOVAL ....... 16 3.1.4 SEPTIC TANK WASTE RECEIVING STATION ............................................................................. 17 3.1.5 EQUALIZATION TANK (ET) .............................................................................................................. 17 3.1.6 FLOW MEASUREMENT ........................................................................................................................ 18 3.2 SECONDARY TREATMENT ..............................................................................................18 3.3 TERTIARY TREATMENT (TT) ...........................................................................................22 3.3.1 SAND FILTERS ...................................................................................................................................... 22 3.3.2 CHLORINATION UNIT ..................................................................................................................... 23 3.4 FINAL EFFLUENT REUSE ARRANGEMENTS ................................................................24 3.5 SLUDGE TREATMENT ........................................................................................................24 3.5.1 SLUDGE DRYING BEDS .................................................................................................................... 24 3.5.2 MECHANICAL DEWATERING ....................................................................................................... 25 3.6 SUPPORT SYSTEMS ..............................................................................................................27 3.6.1 ODOR CONTROL SYSTEM ............................................................................................................. 27 3.6.2 LABORATORY ...................................................................................................................................... 28 4 GENERAL OBSERVATIONS .................................................................................... 30 8.1 TREATMENT UNITS .................................................................................................................30 8.2 ADMINISTRATIVE CONCERNS ...........................................................................................30 8.2.1 MAINTENANCE STAFF ........................................................................................................................ 30 8.2.2 OPERATION STAFF ................................................ ERROR! BOOKMARK NOT DEFINED. 9. STATUS AND INTERVENTIONS TAKEN BETWEEN THE INVESTIGATION TRIPS ....................................................................................................................................................31 10. TREATMENT PLANT PERFORMANCE .................................................................... 33 10.1 AL ME'RAD TP PERFORMANCE ACCORDING TO WAJ LABORATORY ..........33 10.2 PLANT CAPACITY EVALUATION/EQUIVALENT HYDRAULIC CAPACITY CHARACTERIZATION.......................................................................................................34 Al-Me’rad/West Jerash WWTP Situation Analyses 4 10.2.1 CAPACITY EVALUATION RESULTS AND DISCUSSION .......................................35 11. ECONOMIC ASPECTS ........................................................................................... 37 12. RECOMMENDATIONS ......................................................................................... 38 12.1GENERAL RECOMMENDATIONS - SHORT-TERM PLANNING ..............................38 12.2 PROCESS CONTROL AND OPERATIONS ....................................................................38 12.2.1 ADDITIONAL SAMPLING ................................................................................................................. 38 12.2.2 DO PROBE MAINTENANCE AND USE ........................................................................................ 39 12.2.3 SLUDGE JUDGE FOR BLANKET LEVEL VERIFICATION .........................................39 12.3 PLANT MAINTENANCE RECOMMENDATIONS .........................................................39 12.3.1 HEADWORKS ....................................................................................................................................... 39 12.3.2 ANAEROBIC SELECTORS ................................................................................................................. 39 12.3.3 GRAVITY THICKENERS AND SECONDARY CLARIFIERS ..................................................... 40 12.4 SPECIFIC RECOMMENDATIONS FOR AL-ME’RAD WWTP ....................................40 13. SCHEDULE OF RECOMMENDATION'S IMPLEMENTATION ..................................... 42 Al-Me’rad/West Jerash WWTP Situation Analysis 5 LIST OF TABLES Table 1: WMI priority WWTPs for operational situation analysis ............................................................. 10 Table 2. Al- Me’rad/West Jerash WWTP Design Loads (Including septage) .......................................... 12 Table 3. Al- Me’rad/West Jerash WWTP Design vs Current Loads ......................................................... 13 Table 4. Design data for the three stages of the biological treatment ...................................................... 14 Table 5. Al-Me'rad Al-Me'rad TP laboratory equipment............................................................................... 29 Table 7. Results of Hydraulic Capacity Evaluation .......................................................................................... 35 TABLE OF FIGURES Figure 1. Communities served by Al-Me'rad Al-Me'rad WWTP ................................................................ 12 Figure 2. Process flow diagram of Al-Me'rad Al-Me'rad WWTP ................................................................ 15 Figure 3. Septage Receiving Station (spare odor control media in background) ..................................... 17 Figure 4. Construction of the Two Anaerobic Selectors and MOD .......................................................... 19 Figure 5. MOD in Operation ............................................................................................................................... 19 Figure 6. Centrifugal Blower for Aeration ....................................................................................................... 20 Figure 7. Secondary Settling Tank during Construction .................... Error! Bookmark not defined. Figure 8. Secondary Clarifier with Water Spray .................................. Error! Bookmark not defined. Figure 9. Secondary Clarifier with Solids at the Surface and Floatable Solids at Weirs ................Error! Bookmark not defined. Figure 10. Filters (Duckweed seen in the back two basins) ......................................................................... 22 Figure 11. Reuse