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CHAPTER 3 : WASTEWATER FROM INDUSTRIES (CATEGORIES OF WATER POLLUTANTS…
CHAPTER 3 : WASTEWATER FROM INDUSTRIES
it's about
contamination of water body
.it involve with change of
physical
biological
chemical
SOURCE OF WATER POLLUTION
Point Source (PS)
Water pollution that are collected by an identifiable network of pipes and conveyed to a single point of discharge into the receiving water.
Relatively easy to monitor, control and regulate
Non-Point Source (NPS)
A widely spread source of pollution that can’t be tied to a specific point of origin
Difficult to monitor, control and regulate
CATEGORIES OF WATER POLLUTANTS
OXYGEN DEMANDING MATERIALS
The oxidation of these materials will consume the dissolved oxygen (DO) in the receiving water and poses threat to fish and other aquatic life that require oxygen to live.
Source
: Domestic waste, industrial waste and natural waste
NUTRIENT & SUSPENDED SOLIDS
Nutrient
Eutrophication
Pollutants: Nitrogen, Phosphorus
suspended solid
Settle to the bottom of river or lake as a sediment and could destroy habitats of aquatic life
Sources
: Soil erosion from agricultural and construction field
PATHOGENICORGANISMS& SALTS
Pathogenic Organisms
Microorganisms like bacteria, viruses and protozoa that can cause disease
Sources
: Human and animal waste
Salts
All water contains some salts.
Sources
: Urban runoff
TOXIC METALS AND ORGANIC CHEMICALS
Toxic Metals
arsenic, lead, mercury,
Sources
: Vehicle emissions, fertilizers,
Toxic Organic Chemicals
chlorine, fluoride, dioxins
Sources
: Mining, manufacturing of chemicals
PHARMACEUTICALS& PERSONALCAREPRODUCTS (PPCPs)tex
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Compound that are applied externally or ingested by human and
animals.
Source:
-Disposal of expired, unwanted, or excess medications to the sewage
HEAT POLLUTION
Electric power industry and industrial processes release wastewater that are much hotter than the receiving waters
WATER QUALITY ASSESSMENT
TOTAL SOLID (TS): Refers to matter suspended or dissolved in water or wastewater
measure: Using a drying temperature of 104°C.
TOTAL SUSPENDED SOLID (TSS): TSS are solids in water that can be trapped by a filter
TOTAL DISSOLVED SOLID (TDS): solids in water that can pass through a filter
measure: conductivity