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- 1. NAME STUDENT ID TAN JIA YI 0319476 LEE REN JET 0319058 CHIN WENG LOK 0323583 CHONG KAI XIANG 0322935 YAP JIA EN 0319550 FELIX VONG ZHI WEI 0318462 TOPIC: WATER TREATMENT FOR DOMESTIC WATER SUPPLIES
- 5. • safe and pleasant to drink • major health risks if contain harmful i. chemicals ii. microorganisms.
- 7. INSTALLATION PROCESS FOR HOUSEHOLD WATER SUPPLY
- 9. Step 1- Coagulation To removes dirt and other particles suspended in water. Alum and other chemicals are added to water to form tiny sticky particles called "floc" which attract the dirt particles. The combined weight of the dirt and the alum (floc) become heavy enough to sink to the bottom during sedimentation.
- 10. Utilizes gravity to sepparated suspended solid from water. “Floc” settles by gravity to the bottom of a sedimentation basin. Then, clean water spills over to the filter. Step 2- Sedimentation
- 11. Step 3- Filtration The water passes through filters, some made of layers of sand, gravel, and charcoal that help remove even smaller particles.
- 12. Step 4- Disinfection A small amount of chlorine is added or some other disinfection method is used to kill any bacteria or microorganisims that may be in the water.
- 13. Step 5- Storage Water is placed in a closed tank or reservoir in order for disinfection to take place. The water then flows through pipes to homes and businesses in the community.
- 14. FLOC • a collection of smaller particles agglomerating into larger particles containing particulate matter, debris, bacteria and Bio-polymers.
- 16. Why? • to remove chemicals, particulates (e.g., soot and silt) and bacteria • Provide clean drinking water supply • indoor and outdoor household purposes • Affect human health
- 17. Biological Sand Filters Sand layer develops as bio-layer consist of colonic beneficial bacteria and algae attack water-borne pathogens backwashing the filter once every two to four weeks replacement of the top layer of sand with new sand
- 18. Water Distiller require regular cleaning cleaning frequency depends on the type of water being treated. remove chlorine, so when testing for chlorine residual, draw the sample ahead of the distiller.
- 19. Reverse Osmosis Units designed for use on very high quality feed water 5- micron and the granular carbon filters require replacement at least four times per year osmosis method
- 20. Ultraviolet Light Disinfection most effective treatments working principle simple and involves no chemicals. UV light destroys all impurities present in water under the Kitchen/Utility sink.
- 21. CASE STUDY
- 23. Background • Was first established in Korea in 1989 • Coway has been dedicated to researching and developing environmental solution, particularly wellness appliances and general living standards. • A market leader in the manufacture and distribution of home wellness appliances with main focus on health and well-being
- 24. • Was introduced to the Malaysian market in 2006 • Position itself as the brand that cares for your health and the environment with the tagline “We Bring Wellness” • Providing 100% eco-friendly home appliances for your well-being • Now, there are more than 40,000 customers in Malaysia and still rapidly growing
- 25. Unique Competitive Advantages of COWAY • Combination of innovative design • High-technology manufacturing • Collaboration with their partners and customers
- 26. Reverse Osmosis (RO) • Reverse Osmosis is one of the water treatment system adopted by Coway • To desalinate water which is turning sea or brackish water into drinking water
- 27. Advantages and Disadvantages No. Advantages Disadvantages 1 RO system eliminate all heavy metals that harmful to health like lead, mercury, selenium, animal wastes and chemicals RO system de-mineralizas water and drinking de- mineralized water on a regular basis may cause digestive problems and nutritional deficiencies. 2 RO system remove 99% bacteria and pyrogenic substances in water which is ideal for patient suffer from heart disease For every one gallon of water that is clean, anywhere from half a gallon to five gallons is wasted. 3 RO systems remove dissolved materials and other contaminants that cause water to smell unpleasant, and look odd RO system costs more to maintain and it costs more to operate than other more efficient systems. 4 RO water filters remove even the smallest particles from drinking water but other method do not remove particles of inorganic pollutants like metals and chemicals Any chemicals that are smaller size than water such as pesticides, can pass through the RO membrane. 5 A reverse osmosis purifier has membrane filters can last a long time Minerals like calcium, magnesium and potassium, which are necessary for bone development and cardiovascular function, are being removed.
- 30. Physical • “Rotten egg” taste and unpleasant odor • Causes black stains on silverware and fixtures Taste and Odor • Turbidity- undesirable for health • Highly discolored water • Stain on household fixtures Turbidity and color
- 31. Biological • Range from ultra-small viruses to bacteria and large protozoa • Cause disease e.g: typhoid, dysentery Pathogenic organisms
- 32. Chemical • Caused by magnesium and calcium • Hard water deposits scale inside pipes • Water becomes acidic in low hardness level Hardness • Excess ferric iron creates havoc in plumbing systems • Give metallic taste to food Iron Scale deposit
- 33. Chemical • Cause bitter metallic taste to food and water • Stimulate growth of bacteria in tanks,filters • Stains on plumbing fixtures and laundry Manganese • Accelerate corrosion of pipes, boilers and fixtures • Impart a salty taste Chloride
- 34. Chemical • Harmful to health(respiratory system) • Cause shortness of breath& heart attack Nitrates • Corrosive water leach from pipes into drinking water & creating metallic taste Acidic water and lead
- 35. Chemical • Yellowing of teeth • Damage to spinal cord Fluoride • Colourless,odorless,tasteless radioactive gas • Risk of developing internal organs cancer Radon
- 38. Nanotechnology are the study and application of extremely small things and can be used across all the other science fields, such as chemistry, biology, physics, materials science, and engineering.
- 39. have incredibly large surface areas and can be more easily cleaned by back-flushing desalination process more efficient, affordable, and available to more people less pressure is required to pass water across the filter prevents even the smallest viruses getting through, and eliminates the need for chemicals to treat the water
- 40. Cow Manure
- 41. Known as the McLanahan Nutrient Separation Manure is mostly made of water This system is a contraption that takes waste, such as manure, and produces energy as a byproduct – and couples it with an ultrafiltration, air stripping and a reverse osmosis system. One cow can able to produce up to 10 thousand gallons of manure a year’’ Cows could be producing nearly 900,000 gallons of clean water or more annually. This technology also may turn water into another renewable resources by feeding it back to livestock to reproduce manure!
- 42. The LifeStraw
- 43. LifeStraw LifeStraw filters 99.9999% of bacteria and 99.99% of protozoa which is also means that any kind of water source is able to be consumed safely! Also filters a minimum of 1000 liters (264 gallons of water Versatility, Efficiency and Affordable!
Notes de l'éditeur
- Coway was introduced to the Malaysian market in 2006. Coway positions itself as the brand that cares for your health and the environment with the tagline “We Bring Wellness” by providing 100% eco-friendly home appliances for your well-being. Now, there are more than 40,000 customers in Malaysia and the number is rapidly growing.