However this phenomena (Eutrophication) water becomes cloudy and normally shade green color and this water clarity decreasing reduce the amount of absorbed light for alga. In addition microorganisms and bacteria’s decompose dead alga and other planets and consume remained oxygen in the ponds and lakes. Eutrophication slowly limits various usages of lakes or ponds such as recreation, fishing, and even public health problems in case of influence to drinking water. There are two main type of eutrophication which are natural eutrophication and cultural eutrophication. Naturally nutrients loading during long time cause alga blooming, and natural eutrophication during decades.
The nonorganic water waste pollutants mainly includes nutrients such as ammonium and phosphate. The most common ions in wastewater are potassium, sodium, calcium, ammonium,chloride, magnesium, sulphate, phosphate and hydrogencarbonate . The main contributors to eutrophication are phosphorus and nitrogen . In wastewater they have a unique position in that they exist in both inorganic and organic forms. Apart from the organic forms phosphorus exists as orthophosphate and polyphosphate and nitrogen as nitrite, ammonium, and nitrate .
Eutrophication occurs when there is an over supply of nutrients in an environment, and can cause serious problems especially in water bodies. The increase in nutrient levels could result in algal blooms which is detrimental to the water resource, as algal blooms disrupt the natural ecosystem that functions in the water resource and take in the oxygen in the water body and blocks out sunlight. As little or no oxygen is present in the water resource, much of the aquatic life dies out, resulting in dead zones. Luckily, dead zones mostly occur in smaller water bodies, and since Loktak Lake is a large one, it did not become a dead zone, but still faces the problem of eutrophication. Eutrophication makes water resources unsafe for use as certain algal blooms, fertilizers or pesticides contain harmful chemicals that is not safe for
D., Plewa, M. J., Wagner, E. D., Schoeny, R., & DeMarini, D. M. (2007). Occurrence, genotoxicity, and carcinogenicity of regulated and emerging disinfection by-products in drinking water: a review and roadmap for research. Mutation Research/Reviews in Mutation Research, 636(1), 178-242. Richardson, S. D. (2003). Disinfection by-products and other emerging contaminants in drinking water.
Recharge by runoff from irrigation water into groundwater as well as leaching of agrochemicals cause serious groundwater contamination problems. The clearing of natural vegetation and ploughing up of virgin land for new cultivation also affect the groundwater quality. Irrigation is one of the major sources of salinity in the soil through which rainwater flows to the water table. The dissolution of these salts finally
Sewage is a blend of squanders, both residential and modern as arrangement or suspension. It is additionally called city water or wastewater. It comprises of almost 99% water alongside pathogenic microbes, suspended solids and particles. It is discharged in water bodies like lakes or streams and there is a need to guarantee the best possible treatment of these squanders so as to avert water contamination and related infections. Sewage is derieved from the latin word "exaquare" signifying 'to deplete out(water or other fluid substances) ' Waste water more often than not comprises of filthy water from showers, dishwashers, toilets and so on which incorporate human waste, cleansers, cleansers and other destructive microorganisms and non-biodegradable
The presence of bacteria and pathogenic organisms is a concern when considering the safety of drinking water. Pathogenic organisms can cause intestinal infections, dysentery, hepatitis, typhoid fever, cholera, and other illnesses. Sources of Bacteria in Drinking Water: The Need for Water Testing Human and animal wastes are a primary source of bacteria in water. These sources of bacterial contamination include runoff from feedlots, pastures, dog runs, and other land areas where animal wastes are deposited. Additional sources include seepage or discharge from septic tanks, sewage treatment facilities, and natural soil/plant bacteria.
Examples of organic wastes include pesticide residues, solvents and cleaning fluids, dissolved residue from fruits and vegetables, lignin from pulp and paper to name a few. Effluents can also contain inorganic wastes such as brine salts and metals. The clean water Act (1991) provided standard for the permissible release of a limited amount of contaminants into waterways. This is an incentive for industry to pre-treat their waste water by neutralizing the chemically active components, recycling, dilution or extraction and collection for proper disposal. Industries making use of large amounts of water in their treatment processes include chemical manufacturers, steel plants, metal processers and textile manufacturers.