pollution and environmental chemistry in ke
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Transcript of pollution and environmental chemistry in ke
MEMBERS:
MOHD AZIZI AL-HAFIZ BIN WIRZAL
SITI NORATIKA BINTI AHMAD
WAN NURUL SYAFAWANI BINTI WAN MOHD TAUFEK
AIMAN ARIF BIN MOHAMED BUKHARY
MOHAMAD ABDIN SHAKIRIN BIN SAMRI
SITI ATIKAH BINTI KADIAN
WAN MOHD HILMEY BIN W MOHD ARIFIN
PARAMETERS USED TO MEASURE WATER POLLUTION.
• Dissolved Oxygen (DO)
• pH
• Temperature Change
• Fecal Coliform
• Nitrate content
• Phosphate content
• Total Dissolved Solid (TDS)
• Turbidity
DISSOLVED OXYGEN
WHAT?
• Amount of oxygen freely available in water.
• From atmosphere and plant.
• Running water dissolve more oxygen than still water.
WHY?• Aquatic animals consumes oxygen for their
survival.
• Decomposition.
• Chemical reactions.
• Stormwater runoff from farmland or urban streets, feedlots and failing septic system.
DEPENDING ON?
•Water temperature.
• Altitude.
DISSOLVED OXYGEN IN KELANTAN’S RIVERThe DO levels of the Kelantan River varied from 5.60 to 6.57 mg/L
CHANGE IN TEMPERATURE AND pH VALUE
• The water temperature is the most important ecological factor because it controls the physiological behavior and distribution of an organisms. (Krishnamoorthy,2011)
• pH is one of the most important factors serves as index for pollution. (Tan and Rohasliney,2011)
Tan and Rohasliney,2011
Notes:Class Uses
l -Conservation of natural environment - practically no treatment necessary (except by disinfection of boiling only)
llA - conventional treatment required llB -Recreational use with body contact lll - extensive treatment required lV -Irrigation V -None of the above
• Normal kelantan water temperature range is 25.29 - 25.98 celcius. (Tan and Rohasliney, 2011)
Wet and dry season
• In wet season pH of the water in Kelantan ranged between 5.2 to 8.1, with an average of 6.5. While during dry season the well water samples become more acidic, with pH ranging between 4.7 and 6.9, with an average of 5.7. (Zani, Wahidah and Hasliza, 2005)
• Based on the INWQS the wet season average falls into Class I, while the dry season falls into Class III category. This observation might be attributed to the great reduction in water volume in the wells during dry season.
Form of bacteria found in human and animal waste.
From poor water treatment.
Do not dangerous as themselves but they may some lead to other disease.
Found in ice cubes
Origin: poor quality of water in Kelantan.
The manufacturing of ice cubes are used this kind of water.
Ice cubes are distributed to all place.
Ice cubes are the necessity for Kelantanese in this hot weather.
Food poisoning
Diarrhoea
Fever
Stomach ache
Headache
District Number of Samples Total Coliform (MPN/100ml) E.coli (MPN/100ml) Salmonella species (MPN/100ml)
Bachok 40 215.73±1082.2 0.0 0.0
Gua Musang 21 62.48±158.2 24.95±104.37 0.0
Kota Bharu 76 1218.5±4062.9 7.93±32.55 0.33±0.88
Kuala Krai 22 1.45±4.15 0.09±0.43 0.0
Machang 20 8.80±22.85 4.05±12.52 0.0
Pasir Mas 55 4.62±21.39 1.69±9.67 0.0
Pasir Puteh 80 564.92±2377 4.88±30 0.0
Tanah Merah 20 2.45±3.97 0.10±0.447 0.0
Tumpat 120 10780±33814 5.14±19.55 0.03±0.288
Total 454 3175.94±18032 5.09±30.77 0.06±0.41
http://www.msptm.org/files/71_-_76_Noor_Izani_N_J.pdf
http://h2o.water.gov.my/man_water/WRP21.pdf
• Kelantan River has been used heavily by the
local people for
I. Domestic uses
II. Transportation
III. Agriculture
IV. Plantation irrigation
V. Small scale fishing industries
VI. Sand mining activities
• Kelantan River’s case study revealed that
I. Nitrate contents were exceed the Malaysian Interim National Water
Quality Standard (INWQS) range and were significance different Kota
Bharu and Tanah Merah.
II. Nitrate concentration of Kelantan River ranged from 13.3 to 21.7 mg/L,
exceed INWQS range. Maximum concentration was observed at Kota
Bharu and minimum at Tanah Merah.
I. High value of concentration of nitrate at Kota Bharu was due to the
agricultural run-off as there were few agricultural sites along Kota
Bharu. This indicated minimal influence of industrial effluents on
Kelantan River ecosystem.
II. Significance difference was found between Kuala Krai and Tanah
Merah. Highest value of nitrite concentration was observed at Kuala
Krai (0.183 + 0.122mg/L) and lowest value at Tanah Merah (0.098 +
0.030mg/L). (Tan and Rohasliney, 2011 )
I. Extreme high concentration of nitrate caused the poor and stressful
condition for the aquatic life in Kelantan River.
II. Nitrates are a measure of the oxidized form of nitrogen and are an
essential macronutrient in aquatic environments.
III. Nitrates can be harmful to humans, because our intestines can
break nitrates down into nitrites, which affect the ability of red blood
cells to carry oxygen and cause serious illnesses in fish (Davis and
McCuen, 2005).
Tan P. Y and Rohasliney H. (2011), Status of Water Quality Subject to Sand
Mining in Kelantan River, Kelantan. Kubang Kerian : Universiti Sains Malaysia.
REFERENCES
Total Dissolved SolidsTDS
What is TDS
• Total Dissolved Solids (TDS) are the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, expressed in units of mg per unit volume of water (mg/L), also referred to as parts per million (ppm).
• TDS is directly related to the purity of water and the quality of water purification systems and affects everything that consumes, lives in, or uses water, whether organic or inorganic, whether for better or for worse.
Sources - http://www.tdsmeter.com/what-is
Sources Dissolved Solids
• Organic sources such as leaves, silt, plankton, and industrial waste and sewage. Other organic solids are runoff from urban areas, road salts used on street during the winter, and fertilizers and pesticides used on lawns and farms.
• Inorganic materials such as rocks and air that may contain calcium bicarbonate, nitrogen, iron phosphorous, sulfur, and other minerals. Many of these materials form salts, which are compounds that contain both a metal and a nonmetal. Salts usually dissolve in water forming ions. Ions are particles that have a positive or negative charge.
• Water may also pick up metals such as lead or copper as they travel through pipes used to distribute water to consumers.
Sources - http://www.tdsmeter.com/what-is
Why we Should Measure TDS?
• The EPA Secondary Regulations advise a maximum contamination level (MCL) of 500mg/liter (500 parts per million (ppm)) for TDS. Numerous water supplies exceed this level. When TDS levels exceed 1000mg/L it is generally considered unfit for human consumption.
Sources - http://www.tdsmeter.com/what-is
Bar chart of TDS Levels in Groundwater at Kota Bharu Areas
0
10
20
30
40
50
60
70
80
90
100
Feb May Sep Dec Feb Apr Jul Nov
Tanjung Mas
Pintu Geng
Chicha
TDS
(mg/
l)
2010 2011Month
Amount of TDS Recorded in Groundwater• Tanjung Mas
• Average = 41.23 mg/l (2010)
• Highest = 50.1 mg/l (February 2010)
• Lowest = 32 mg/l (February 2010)
• Pintu Geng
• Average = 70.38 mg/l
• Highest = 92.30 mg/l (November 2011)
• Lowest = 48.4 mg/l (April 2011)
Siti Halwani, M. N.(2012). Spatial and Temporal Patterns ofGroundwater Quality at Kota Bahru, Kelantan,1, pg. 50-51.
Amount of TDS Recorded in Groundwater• Pintu Geng
• Average = 48.99mg/l
• Highest = 51.90 mg/l (December 2010)
• Lowest = 35.00 mg/l (February 2010)
Siti Halwani, M. N.(2012). Spatial and Temporal Patterns ofGroundwater Quality at Kota Bahru, Kelantan,1, pg. 50-51.
From the research…
• TDS levels for this area are small compared to the guidelines
• Therefore, water in Kelantan is drinkable .
Siti Halwani, M. N.(2012). Spatial and Temporal Patterns ofGroundwater Quality at Kota Bahru, Kelantan,1, pg. 50-51.
TOTAL PHOSPHATE
TOTAL PHOSPHATES
• PHOSPHATES ARE CHEMICAL COMPOUNDS MADE FROM THE ELEMENTS
PHOSPHOROUS AND OXYGEN; THEY ARE NECESSARY FOR PLANT AND ANIMAL
GROWTH. PHOSPHATES CAN BE PRESENT IN WATER IN MANY FORMS, SO
TOTAL PHOSPHATE GIVES AN ESTIMATE OF THE TOTAL AMOUNT OF
PHOSPHATE POTENTIALLY AVAILABLE IN A GIVEN WATER SUPPLY.
NONPOINT SOURCES
• NATURAL: PHOSPHATE DEPOSITS AND PHOSPHATE-RICH ROCKS RELEASE
PHOSPHORUS DURING WEATHERING, EROSION, AND LEACHING (SMITH, 1990).
• PHOSPHORUS MAY BE RELEASED FROM LAKE AND RESERVOIR BOTTOM
SEDIMENTS DURING SEASONAL OVERTURNS.
ANTHROPOGENIC NONPOINT SOURCES
• ANTHROPOGENIC: THE PRIMARY ANTHROPOGENIC NONPOINT SOURCES OF
PHOSPHORUS INCLUDE RUNOFF FROM
• 1) LAND AREAS BEING MINED FOR PHOSPHATE DEPOSITS
• 2) AGRICULTURAL AREAS
• 3) URBAN/RESIDENTIAL AREAS.
POINT SOURCES
• POINT SOURCES: SEWAGE TREATMENT PLANTS PROVIDE MOST OF THE
AVAILABLE PHOSPHORUS TO SURFACE WATER BODIES.
• ADDITIONAL PHOSPHORUS ORIGINATES FROM THE USE OF INDUSTRIAL
PRODUCTS, SUCH AS TOOTHPASTE, DETERGENTS, PHARMACEUTICALS, AND
FOOD-TREATING COMPOUNDS.
INTERNATIONAL CONFERENCE ON
FRONTIERS OF ENVIRONMENT, ENERGY AND BIOSCIENCE
TABLE 1 SUMMARY
• ALL SPECIES OF FREE-FLOATING AQUATIC PLANT ANALYSED AT KELANTAN
WERE DETECTED WITH HIGH LEVEL OF PHOSPHATE AT LEVEL AT LEVEL III
WHICH IS POLLUTED.
• PHOSPHATE CONCENTRATION RANGE FROM 0.75 ± 0.19 MG/L TO 1.38 ± 0.80
MG/L DETECTED AT ALL LOCALITIES IN KELANTAN.
TURBIDITY• Measure of water clarity, how much the
material suspended in water decreases the passage of light through the water.
• Higher the intensity of scattered light, higher the turbidity.
• Turbidity can affect the color of water.¨Acquired from United State Environmental Protection Agency (EPA)
• Substances that can cause water to be turbid:
– Soil particles• Clay
• Silt
• Sand
–Algae
– Plankton
–Microbes
–Other substances
Nephelometric Turbidity Units (NTU)
• Units for measuring turbidity.
• Nephelometer @ turbidimeter is the instrument used to estimate light scattering from suspended particulate material.
Safe NTU Units• Raw Water (river, etc.)
– 0-5 NTU
• Treated Water (drinking water)
–Less than 0.3 NTU
¨Drinking Water Quality Surveillance Programme (Ministry
Of Health Malaysia)
¨Adapted from Interim National Water Quality Standard for
Malaysia (INWQS)
Main Kelantan River NTU Units
• Kuala Krai – 672.00
• Tanah Merah – 264.98
• Pasir Mas – 453.04
• Kota Bharu – 437.42
¨The American-Eurasian Network for Scientific Information
(AENSI)
¨Adapted from "Turbidty: A Water Quality Measure“. (http://www.waterontheweb.org/)
Biological Oxygen Demand
BOD
• The biological oxygen demand is defined as the ‘measure of dissolved oxygen required to decompose the organic matter in water biologically’
• Normally, it is measured over 5 days
What’s it for then?
• Since most aquatic organisms need oxygen to carry out anaerobic respiration/ photosynthesis…
• Water with High BOD, but can’t replenish oxygen fast enough, won’t be able to meet the needs of the aquatic community…
• …Hence they will eventually suffocate
Some Comparisons…
• Rapid waters can rapidly replenish Oxygen supply due to its fast flow
• Lakes are less efficient at doing this
• Pure water BOD = 1 ppm
• Polluted water BOD = 5 ppm or above
Difference between Aerobic and Anaerobic Decomposition
Element Aerobic Decay
Product
Anaerobic decay
product
C CO2 CH4
N NO3 NH3
H H2O CH4, NH3, H2S, H2O
S SO4²- H2S
P PO4³- PH3
Eutrophication
Excess of nitrates/ artificial fertilisers/
phosphates
Excessive growth of plants/ algae
Dissolved O2 not sufficient to cope
with anaerobic decomposition
NH3, H2S, PH3
poison waterAquatic species dies
MORE anaerobic decay
Lake = Devoid of life
Thermal Water Pollution
• Thermal pollution is the ‘degradation of water quality by any process that changes ambientwater temperature’
Sources
• 1. Careless discharge of heated water – i.e. in industrial places
• 2. Removal of shading vegetation
Effects
1.• Increase Water Temperature
2.• Solubility of Water decreases
3.• Metabolic rate of aquatic organisms increases
4.• Demand for O2 increases
CONCLUSION.• Kelantan water are clean except for a certain
parameters (Turbidity, Nitrate) which exceed the limit provide by INWQS and need further treatment.
• This might be due to sand mining, upstream logging activities near the area and others.