Veolia designs water reuse process for Baladna
22 Sep 2020 – 9:10
A provided picture of an aerial view of Baladna farm located in Al Khor, north of Doha, Qatar.
With a capacity of up to 24,000 cows and a superficy of 2.4 million m2, Baladna’s cow farm is the biggest cow farm in Qatar and one of the biggest in the Gulf Cooperation Council (GCC) countries.
The barn and milk parlor flushing area of the cow farm generates around 6,000 m3/day of wastewater. As part of the wastewater treatment plant upgrade, Veolia modified and optimised the treatment performance of the existing lagoons and provided a complementary biological process to meet the treated effluent quality necessary for reuse. The treated water can now be reused for irrigation within the farm and, following further treatment by reverse osmosis, to spray and cool the cows during hot summer months.
Ramez Al Khayyat, Managing Director of Baladna, expressed his keenness on the partnership with Veolia, and said: “Baladna’s commitment to sustainability is to create a long-lasting difference in Qatar. The holistic approach to reuse treated wastewater is a key development for our company’s sustainable goals, and we are enthusiastic to be at the tip of technological breakthrough for the best interest of our products and consumers.”
Veolia Water Technologies Middle East CEO Thierry Froment, added: “Baladna is actively participating in the Qatar National Food Security Program (QNFSP). We are immensely proud to assist them in achieving their ambition to grow their business and help them do so in a more sustainable way through water reuse”.
An audit and analytical monitoring of the site prior to the works showed that the existing wastewater lagoon arrangement had hydraulic issues which resulted in relatively poor performance. The existing lagoons were also operated without any aeration, contrary to the initial design. Through the upgrade of the existing lagoon system, Veolia optimised its process performance to meet Chemical Oxygen Demand (COD) and Total Suspended Solids (TSS) removal between 80 percent to 92 percent.
To further treat the effluent, a two-stage AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) process was provided with complete sieve and aeration grid arrangement. The MBBR process uses microorganisms for biological treatment of wastewater and allows for high treatment capacity in a small footprint.
The effluent is then treated with coagulants and flocculants before tertiary treatment through a two-stage filtration made of Hydrotech Discfilters and Drumfilters. These highquality, Swedish-manufactured filters are cost effective, have low energy consumption and an automatic control to optimise capacity. Finally, disinfection is performed using a sodium hypochlorite solution pumped to the new chlorine contact tank.
Veolia group is the global leader in optimised resource management. With nearly 179,000 employees worldwide, the Group designs and provides water, waste and energy management solutions which contribute to the sustainable development of communities and industries. Through its three complementary business activities, Veolia helps to develop access to resources, preserve available resources, and to replenish them.
In 2019, the Veolia group supplied 98 million people with drinking water and 67 million people with wastewater service, produced nearly 45 million megawatt hours of energy and treated 50 million metric tonnes of waste. Veolia Environnement (listed on Paris Euronext) recorded consolidated revenue of €27.189bn in 2019 ($29.9bn).