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Why Pollutants are Important, Industrial Pollution, Marine Pollution
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Industrial pollution, Marine pollution

Aishwarya Mishra
A Double post graduate in Zoology(MSc) (2017) as well as in Education (MA)(2017) with State Govt. B.ed(2015), Qualified IBPS RRB PO & OPSC

U
Unacademy user
MAM 4TH question me toh lower PH ke bare me puch raha h ya higher ke bare me? I am confused....!!!!! if lower PH k bare me puch raha h toh , lower PH me effectiveness increase ho jati h chlorination ki toh smaller amount ka chlorine dalna padta h kya water me? plz help me mam............!!!!!!!!!!!!!
Sharayu Pujari
a year ago
as the lower pH values is efficient the contact period required is smaller
Jagdish Jena
a year ago
mam contact period means killing of bacteria RIGHT ................ ??????????
Aishwarya Mishra
2 years ago
welcome !! :)
  1. Water Pollutiorn AISHWARYA MISHRA M.SC. IN ZOOLOGY (2017) MA IN EDUCATION (2017) B.Ed (2015)


  2. Pollutants Found in Runoff Sediment Soil particles transported fromLeaves their source Biochemical Oxygen Demand (BOD) . Oxygen depleting material Organic material Toxics Nutrients . Various types of materials that become dissolved and suspended in water (commonly found in fertilizer and plant material) . Pesticides > Herbicides Fungicides Insecticides - Metals (naturally occurring in soil, automotive emissions/ tires) Nitrogen (N) Phosphorus (P) Lead Zinc Bacterial Pathogens Originating from: Thermal Stress Mercury Petroleum Hydrocarbons (automotive exhaust and fuel/oil) e Pets e Waterfowl . Failing septic systems vegetation Heated runoff removal of streamside Debris Litter and illegal dumping


  3. Pollutants from Agriculture Sediment Nutrients Pathogens Pesticides


  4. Why are these pollutants important? Sediment reduces light penetration in stream, clogs gills of fish and aquatic invertebrates. Nutrients act as fertilizer for algae & aquatic plants which can cause highly varying dissolved oxygen levels. At low DO levels, the aquatic life has the potential to be harmed Toxics can impact life and contaminate drinking water supplies. Bacteria/Pathogens are an indicator of possible viruses present in the system.