October 4, 2012, Thursday –The second batch of the Chemical Engineering Technology studentswent to the Manila Water Company Inc for the Industrial Orientation Program. We wereaccompanied by Prof. Hinojales and we all wore our tech shirts. Riding on a coaster of theManila Water, we excitedly left TUP at 7:30 am heading to the 1st stop which is the BalaraWater Treatment Plant, also the headquarters office of the Manila Water Company Inc that islocated in MWSS Admin Bldg 489 Katipunan Rd Balara, Quezon City. This is also where theLakbayan Center is located. The whole plant tour is covered by the Lakbayan Water TrailProgram of the Manila Water Company which primary purpose is to open up the minds ofpeople into saving the environment and how the water from our home is treated.We were gladly welcomed by the people of Manila Water, especially Ms. Heidi Demaisip who’sthe Lakbayan Manager. At the entrance, we were given our name tags and reusable waterbottles which were also signed with our name and date. We sat on the seats provided insidethe conference room and Ms. Heidi Demaisip shared brief information about the company,particularly its history, and its company vision and sustainability programs. The process of thewater treatment and sewage treatment were also discussed and this included watching ofvideos and powerpoint presentation.Manila Water Company Inc. is a private water and wastewater utility company serving 6.1million customers in Manila’s East Zone. It is owned by the Ayala Corporation with FernandoZobel de Ayala as the Chairman of the Board and Executive Committee. The board of directorsincludes Jaime Augusto Zobel de Ayala as the Vice Chairman, Gerardo C. Ablaza Jr., Presidentand CEO, with directors, Antonino T. Aquino, Delfin L. Lazaro, John Eric T. Francia, Masaji Santo,Ricardo Nicanor N. Jacinto, Simon Gardiner, and Solomon M. Hermosura, and with independentdirectors, Jose L. Cuisia Jr and Oscar S. Reyes. The employees, the management team, and themembers of the board continually seek team efforts to make the company fulfill their missionand vision.The Manila Water Company Inc. is Metropolitan Waterworks and Sewerage System’s eastconcessionaire, with Maynilad Water Services as its counterpart in the West zone. MWSS andManila Water, as it is usually called, had a 25-year concession agreement that will terminate inthe year of 2022. However, it was extended until August 1, 2037. It was on January 6, 1997when it was incorporated. On the other hand, it was on August 1, 1997 when it built its PublicPrivate Partnership (PPP) with the Philippine Government’s MWSS. It was publicly listed onMarch 18, 2005 with ownership structure of42.8% Public,31.7% Ayala Group,11.7% UnitedUtilities,7% Mitsubishi and 6.8% International Finance Corporation. Before the privatization,Manila Water was left with great problems to face. There were illegal connections of waterpipes, low water pressure, poor customer service and low sanitation. People then vends waterand there was a heavy urgent of water supply to the poor communities of Metro Manila. Theagreement with MWSS aims to expand the service coverage, improve service delivery andinsure operating efficiency.
There are 24 cities and municipalities in Metro Manila in which Manila Water give services to,namely; Makati, Mandaluyong, Pasig, Taguig, Pateros, San Juan, Marikina, some parts ofQuezon City (Cubao, Balara) and Antipolo in Rizal province with a total land area of 1,400 sq min Manila’s East Zone. These cities are called concession areas or business areas of ManilaWater. As the Manila Water takes full effort in fulfilling its mission, they checked every poorcommunity with illegal connections, have it fixed and offered less payment in waterconnections.To become the leader in the provision of water, wastewater, and other environmental serviceswhich will empower people, protect the environment and enhance the sustainabledevelopment is the Manila Water’s vision.empower people protect the environment enhance sustainable developmentWe may be all wondering where does the water in our household came from or even how it comes inour faucets clean and potable. The water being treated by the Manila Water’s 3 water treatment plantscame from the Umiray diversion dam which has 99% of water from the multipurpose Angat Dam inNorzagaray, Bulacan which has a storage capacity of 850 million cubic meters, then it goes to thegravity-concrete Ipo Dam with 7.5 million cubic meters storage capacity that’s just 7.5 km downstreamof Angat Dam, then it goes to the earth dam of La Mesa in Fairview, Novaliches, Quezon City with 50.5million cubic meters storage capacity. 60% of the water from Angat is allotted for Maynilad and theremaining 40% is for the Manila Water. This 40% is stored in La Mesa watershed and only the neededamount of water will go through the treatment plants, most particularly in Balara Treatment Plantswherein the raw water will be treated with chlorine and will go the pumping stations or to thedistribution systems to be able to use in the households with 24-hour uninterrupted water supply.Balara Treatment Plants transforms 1.35 million cubic meters of raw water into potable water every day.In Balara Treatment Plant is where the delicate process of water-lightenment took place.. The raw waterfrom La Mesa reservoir still isn’t ready for use in the households, it then undergoes into several process.There are 7-steps of water-lightenment. The first step is the Pre-Chlorination, in this stage the raw wateris cleansed by adding Chlorine to remove dirt and impurities. Next is the Rapid Coagulation, coagulantslike alum and polymer are added to the water, with rapid spinning that will then form lumps of dirtslowly by flocculators to further remove the dirt that floats. The 4th step which is the Sedimentation ,
separates the flocs from the water. The lumps of dirt or flocs sink into the large sedimentation basins and then separation takes place. Intermediate Chlorination is the preceding stage wherein Chlorine is again added to water for disinfecting purposes. The 6th step is Filtration. Filter beds are used to separate the remaining dirt from the water. In this, microscopic impurities like algae, and harmful bacteria are removed. The 7th and final step is the Post- Chlorination in which the filtered water is treated with Chlorine that will ensure that microbes will not contaminate the water in the delivery of water supply to the households. From the Balara Treatment Plants the water will then go to the pumping stations that will undergo Water Quality Testing in the Potability Laboratory, then to the households and lastly to the Wastewater Treatment Plants. Raw water supply comes from Angat Dam water is then transferred to Ipo Dam to be treated in Balara Treatment Plants stored in La Mesa reservoirtreated water is distributed to the pumping delivered in households to the customersstations
The 7 steps to Water-lightenment: Pre- Post- Filtration Chlorination Chlorination Rapid Intermediate Coagulation Chlorination Flocculation SedimentationThe water delivered to the households will soon become waste. Due to improper disposal of waste riversystems were dead. 35% of improper sanitation is present in slums. All the used water in the sink and inthe toilet will directly go to the rivers if septic tanks aren’t provided. This wastewater is harmful for theenvironment and will pollute the rivers. Waste water must be treated so that it can go back to the riverswithout polluting it. Manila Water innovated a technology that will solve this kind of problem. Sewerline connection is the solution. Pipes from households that contain wastewater or sewer lines areconnected to the sewage treatment plants and the waste water will then be treated in there to bebrought back to the rivers. Although, most of the households use septic tanks and 80% of thehouseholds in Metro Manila use this tanks which are improperly disposed and not maintained, it is thennecessary to desludge the septic tanks every 3-5 years to avoid leaks that will lead to the pollution of therivers. Also, 31% of the illness came from this cause, the improper disposal of sewage. improper waste treatment proper treatment of wastewater
Inside the Lakbayan Center, we watched videos regarding the water and wastewater treatment process.Then after some discussions we took some time having our pictures taken. We were asked to writedown our names on a leaf-shaped sticker and have it put on the wall with tree decals. There were 3 treedecals and the leaves of the tree will be completed every time the visitors participate the Lakbayanprogram. We were also given brown-bagged snack. The 2nd stop is the La Mesa Dam which is located inFairview, Novaliches, Quezon City. While inside the coaster, learning hadn’t stopped; we watchedseveral videos regarding proper waste management and environment awareness. Also, to keep usmotivated while in the tour, Ms. Heidi asked us questions and gave prices to those who answered thequestions correctly.We then arrived in La Mesa watershed and finally had achance to take a glimpse in the sole water reservoir inthe National Capital Region. It was in 1929 when LaMesa Facility was built. The normal water level of LaMesa Dam is 80 m and can overflow when it reaches80.15 m. The water that will spill in times when heavyrainfall is present will go to the built-in spillway of thereservoir. La Mesa facility has no gates that will dispersethe overflowed water in the reservoir. The water will bedirected to the spillway and will flow through theTulyahan River. That day the water elevation of La Mesa an intake where raw water from Angat Dam entersdam is 79.26 m. If in times that the supply of the water La Mesa reservoir.from Angat Dam is short, in cases where El Ninooccurred, the La Mesa Dam will not be dried up. The east concession areas will still have supply of water,if the case may be too serious and Angat Dam is all dried up, which probably won’t happen, however,La Mesa Dam may only supply water that will last up to 15-30 days only. The 3rd and final stop is the UP Sewage Treatment Plant. Manila Water Co. Inc. is the largest wastewater operator in the Philippines. It operates the most number of Sewage Treatment Plants (STPs) with the biggest treatment capacity. Currently, Manila Water operates 38 sewage plants in the metro. In UP STP the sewage from the University of the Philippines-Diliman all goes directly to the STP wastewater treatment plant in Makati City connected by a sewer line. Hence, UP Diliman willno longer ask Manila Water to desludge their septic tanks becausefrom the toilets and sinks, the sewage goes directly to the STP. In theSewage Treatment Plant, the septage undergoes processes oftreatment. The first process is called Screening, in this process thesep -tage coming from the sewer lines is screened with the aid of bar filter press
screens. These bar screens separates the garbage(tissu e papers, napkins, hair strands, shampoo andconditioner foils, paper, plastics, etc.) from the sludge. The water that must be treated must onlycontain bio-solids and urine. After passing the screening process, the water will undergo the aerationtreatment. In Aeration or activated sludge process, wherein biological process takes place in breakingdown bio-solids, the tank is held open to permit aerobic bacteria growth that will “eat up” organicpollutants that will then settle at the bottom as sludge. The wastewater will go to the clarifier tankswhich contain silica sand that has a filtering capacity. Dirt will sedimentate and the water is then filteredand only the clarified wastewater will remain. Since, nothing is wasted, the sludge will be further treatedwith the filter press, and then being subjected to an elevated temperature that will make the sludge dryand be brought to the lahar areas as agricultural fertilizers. The clarified water is then already safe forwater creatures to live with. It is then brought back to the rivers safe and pollution-free.
The issue about climate change is very serious. We are living in this planet where people can live. If weare to destroy it, it would also be like gradual killing of ourselves. We live in this planet and we have theresponsibility to take care of it. Improper waste disposal permits pollution of rivers and waterwaysleading to dead water ecosystem. Fishes will die and the rivers will become polluted. Water is life, andwithout it we can’t live. If all the rivers would be dead, would there be still sources for potable drinkingwater we need in order to survive? Perhaps, we will eventually if that is the case. The lesson here is thatwe people must not only care for ourselves. Let us care for the environment. One simple act may do,keeping your candy wrapper in your pockets instead of throwing elsewhere, re-using drinking bottlesand avoiding the disposable ones and of course practicing proper sanitation and waste disposal.Manila Water Co. Inc initiated programs that help in promoting a greener environment. One is what wehad participated, the Lakbayan Water Trail Program. In this program, people in every age and walks oflife are being informed about what is really the effect of the improper waste disposal in ourenvironment. Through this, people will develop a care for the environment because they know the badeffects that will happen. Also one goal of the Manila Water and should also our goal is to revive the lifeof the 3 rivers in Metro Manila, San Juan, Marikina and Pasig.Together we can join hands and be part of saving the environment. One small act will do. With everydaypractice we can truly save our environment before it’s too late. It is the only place we have. Let ustreasure it and never abuse it because in the end we will also be the victims of our own indifferences.‘’ Start a good habit that we cannot break.” - Ms. Heidi S. Demasip, Lakbayan Manager, CommunicationAffairs Department on citing ways how we can save our in environment in our own little waysLa Mesa Watershed
TECHNOLOGICAL UNIVERSITY OF THE PHILIPPINES-TAGUIG INDUSTRIAL ORIENTATION REPORTLakbayan Water Trail Program and Water and Waste Water Treatment Program of Manila Water Co. Inc. Angelica N. Terrado Chemical Engineering Technology 2B2 10 October 2012 Prof. Emerita Hinojales