public works authority apply sustainable developments...
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Public Works Authority Apply Sustainable Developments
Concept with Sewerage Works, Qatar
Khaled El Emadi , Ghazi Abdel Kerim , Hassan El Emadi
COPYRIGHT © Ashghal- PWA This document is intended only for the presentation purpose within Ashghal. All rights reserved. No part of this
document may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Ashghal-PWA.
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• Objective.
• TSE Reuse Quality Standards.
• Tertiary Treatment Processes.
• Sewage Treatment Works Projects.
• Developments of Monitoring Programs.
• Current TSE Rate & Reuse Applications.
• TSE Reuse in Construction Works (Case Study).
• TSE Advanced Treatment Pilot Feasibility Study.
• Recommendations.
Outlines
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Water Scarcity
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Water is Source of Life
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Successfully & Healthy Human Life
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Sustainable Water Resources Development in Gulf Area
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During UN Sustainable Development Decade ( 2005 –
2015), PWA is managing consultancy and contracting
services to design, build and operate state-of-the-art,
sustainable world class infrastructures sanitary drainage
works that not only achieve environmental protection,
but also to sustain the environment, increase non-
conventional water resources, protect assets for the
coming generation, as well as fulfill the Qatar Vision
2030.
PWA Objective
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International: Microbiological Quality for Wastewater Reuse: WHO guidelines US EPA recommendations Other countries such as Italy, Cyprus and Andalusia guidelines Chemical Quality and Agronomical Aspects for Wastewater Reuse: The Food & Agriculture Organization (FAO) guidelines Local : Qatar Environmental Law No. 30, year 2002. Regional: Gulf Countries Such as Saudi Arabia, UAE,..etc. PWA Proposed Design Standards.
Treated Sewage Effluent Reuse Quality Standards
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Table ( 1 ) Proposed Standard Sewage Treated Effluent For Reuse
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*Phosphate limit is based on applied treatment technology (Chemical/Biological).
Standard Effluent Criteria Proposed Standard Future Standard Basis of Compliance
Suspended Solids 5 mg/l 5 mg/l 90%
BOD 5 mg/l 5 mg/l 90%
COD 50 mg/l 50 mg/l 90%
P H 6 – 9 6 - 9 90%
Ammonia 1 mg/l 1 mg/l 90%
Phosphate *1/2 mg/l 2 mg/l 90%
Total Nitrogen 10 mg/l 5 mg/l 90%
Dissolved Oxygen 2 mg/l (min) 2 mg/l (min) 90%
Chlorine (Free Residual) 0.5 – 1.0 mg/l 0.5 – 1.0 mg/l 90%
Turbidity 2 NTU 2 NTU 90%
Total Dissolved Solids 2000 mg/l 500 mg/l 90%
MPN of Faecal Colifrom per 100 ml 0.0
0.0 90%
Intestinal nematodes (no. of eggs per 1 litre)
< 1.0 0.0 95%
Enteric Viruses (no. of plaque forming unit (PFU) per 40 liters )
< 1.0 <1.0 90%
Guardia (no. of cysts per 40 liters) < 1.0 <1.0 90%
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Existing & Under Development
STWs
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Table ( 3) PWA Sewage Treatment Works Projects
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STW Com. year
Design Flow Capacity,
m3/d
Com. year
Design Flow Capacity,
m3/d
Com. year
Design Flow Capacity,
m3/d
Com. year
Design Flow
Capacity, m3/d
Sailiyah 2008 135000 2013 175000 175000 175000
Naijah 2006 106000 2013 180000 180000 180000
Industrial Area 2006 12000 2013 24000 2016 48000 48000
Al Khore 2008 5000 5000 2016 10000 10000
Al Dhakhirah 1600 2013 3200 2019 42000 2030 56000
Doha North 2013 243000 2016 324000 324000
Al Shamal 150 2013 750 2015 7500 2030 22500
Jumeliyah 540 2014 2020 2020 2020
North Camp 300 2014 540 540 540
Shahaniyah 810 2013 1350 1350 1350
Al Khareeb 2005 60
Aum Sllal 2006 1500
Total 634860
790410 819410
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Doha West STW
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Development & Extension of Sanitary Sewerage & TSE Network STWs
Sanitary Sewerage TSE Networks
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Distribution of Drainage Services per Population
Qatar 2009 ( 1638829 ) Qatar 2020 ( 3208963 )
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At 2004, monitoring was only by one identity such as
laboratory belong to PWA quality section.
At 2006, PWA initiated evaluation tools of local private
laboratories & announced yearly approved private laboratories List.
At 2007, PWA developed professional contracts with private
drainage operator’s contractors to take over the responsibility towards operation and maintenance as well as self monitoring.
At 2008, monitoring was extended to be by not only PWA
laboratory quality section but also by operator’s contractors & approved private laboratories.
At 2010, PWA applied remote monitoring system based on YSI sonde, Network Interface Module with built-in GSM/GPRS cellular modem, to support PWA by real time quality reports.
Developments of Monitoring Programs
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Industrial Area STWs
Inlet Set-up: New Auto sampler + 2150 flow meter + New YSI sonde + 2105 Network Interface
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Industrial Area Preliminary Treated Flow Weekly Report
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Industrial Area Preliminary Treated Water Quality Weekly Report
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Current Treated Effluent Reuse Applications
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Current Treated Effluent Rate & Distribution
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TSE Use in Construction works in Doha North STW Project (case study),
Al Dahkhirah STW
Add UF + RO+ Tanker filling line
1250 m3/d feed water.
600 m3/d product water.
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Month
POTABLOC PLANT MONTHLY TSE DEMAND VS MONTHLY PRODUCTION OF RO WATER
Monthly RO Water Production ofPOTABLOC Plant
Monthly TSE Demand at Al Thakira
Monthly RO Water Production ofPotabloc Plant
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24%
40%
4%
32%
RO Product Water Distribution for DNSTW Project
Concrete Production
Dust Control
Landscaping
Other Purpose
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Reverse Osmosis RO Pilot Feasibility Study, Qatar
Pilot Plant Implementation, Doha West STWs,
(40m3/ hr )
to find out the feasibility of application of RO in full scale STWs to improve the quality of PWA TSE and extend TSE use in different applications.
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Recommendations
Extend TSE Reuse To Reduce Desalinated water consumption in : non potable use Applications Construction Projects, Sand Washing, District Cooling, Concrete Batch Plants, Landscaping, Farms Irrigations, Aqua farm, Recreation. Inject Excess TSE into GW Aquifer
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Thank You Any Questions
Designed By : Ahmed Saad Information Systems Dept
COPYRIGHT © Ashghal- PWA This document is intended only for the presentation purpose
within Ashghal. All rights reserved. No part of this document may be reproduced, stored in a retrieval system or transmitted, in any
form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of
Ashghal-PWA.
@ashghal.gov.qa2gabdulkareem