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water and waste water engineering
Transcript of water and waste water engineering
6)Odour GROUP MEMBERS POLITEKNIK TUANKU SUTANAH BAHIYAH NURSHEILA BINTI ZULKIPLI
NURUL LIYANA BINTI OTHMAN
SITI NORAISYAH BINTI JAMALUDIN
NOR FADHILAH BINTI KAMARUZZAMAN
MOHD ZULKARNI BIN ABDULL RASHAID
MOHD NASYRUL ASYRAF BIN MOKHTAR
16DKA10F1193 Pure water is colourless, but water in nature is often coloured by foregin substance.
Fresh waste water light brownish gray.
With time dark gray
More time black (septic).
Domestic and industrial wastes, natural decay of organic materials COLOUR TEMPERATURE Temperature plays a decisive role in some treatment processes, especially the natural-based and non-mechanised ones. Warm temperatures lead to a decrease in land requirements, enhance conversion processes, increase removal efficiencies and make the utilisation of some treatment processes feasible DENSITY It is the oxygen equivalent of organic matter. It is determined by measuring
the dissolved oxygen used during the chemical oxidation of organic matter in
3 hours. CHEMICAL OXYGEN DEMAND
(COD) The more total suspended solid in the water, the murkier it seems and the higher the turbidity.
It's a measure of the light –transmitting properties of water.
Highly turbid water can prevent light from reaching plant from the bottom or phytoplankton in the water column and can reduce the amount of primary productivety in an acuatic system. TURBIDITY Odor is produced by gas production due to the decomposition of organic matter or by substances added to the wastewater.
Detection of odor:Odor is measured by special instruments such as the Portable H2S meter which is used for measuring the concentration of hydrogen sulfide. ODOUR CHEMICAL CHARACTERISTIC BIOLOGICAL OXYGEN DEMAND (BOD) Biochemical Oxygen Demand (BOD) refers to the amount of oxygen that would be
consumed if all the organics in one liter of water were oxidized by bacteria and protozoa Dissolved oxygen analysis measures the amount of
(O2) dissolved in an aqueous solution.
Oxygen gets into water by diffusion from the surrounding air,
by aeration (rapid movement), and as a waste product of photosynthesis. DISSOLVED OXYGEN (DO) Nitrogenous oxygen demand (NOD) is
a quantitative measure of the
amount of dissolved oxygen required for
the biological oxidation of nitrogenous material, for example,
nitrogen in ammonia, and organic nitrogen in waste water NITROGEN OXGEN DEMAND oxygen has a higher electronegativity than hydrogen, water is a polar molecule. The oxygen has a slight negative charge while the hydrogens have a slight positive charge giving the article a strong effective dipole moment. The interactions between the different dipoles of each molecule cause a net attraction force associated with water's high amount of surface tension. TOTAL OXYGEN CHEMICAL BACTERIA: BIOLOGICAL CHARACTERISTIC Types: Spheroid, rod curved rod, spiral, filamentous. Some important bacteria:-
Pseudomonas:-reduce NO3to N2, So it is very important in biological nitrate removal in treatment works.
Zoogloea:-helps through its slime production in the formation of flocs in the aeration tanks. Sphaerotilus natuns:-Causes sludge bulking in the aeration tanks.
Bdellovibrio:destroy pathogens in biological treatment.
Acinetobacter:Store large amounts of phosphate under aerobic conditions and release it under an –anaerobic condition so, they are useful in phosphate removal. Fungi:
•Important in decomposing organic matter to simple forms.
• Cause eutrophication phenomena. (negative effect)
• Useful in oxidation ponds. (positive effect)
• Cause taste and problems when decayed. (negative effect) FUNGUS / ALGAE: VIRUS: Viruses are a major hazard to public health. Some viruses can live as long as
41 days in water and wastewater at 20 oC. They cause lots of dangerous diseases. PROTOZOA: •Feed on bacteria so they help in the purification of treated waste water.
•Some of them are pathogenic. Hydraulic design and joining works
Inspection, operation and maintenance.
additional and modifications works
Chemical flow DESIGN CRITERIA FOR TREATMENT PLANT The removal of metal, rocks, rags, sand, eggshells and similar materials that can affect the operation of a treatment plant.
include coarse screening, grit removal and in some cases PRINCIPAL PRELIMINARY CC607 WATER AND WASTE WATER TREATMENT CIVIL ENGINEERING DEPARTMENT PUAN HANIZAH BINTI OSMAN THANK YOU.... :)