Adjustments to the change will have to take place. For this there is a need for further research and observation of the changes. Climate change, increasing drought frequency and intensity, and high demand of water are increasing scarcity in certain countries. High agricultural consumption, increased salinity and underdeveloped conservation technologies compound the pressures on the nation’s water supply. Ultimately, climate change is likely to have a negative impact on countries and make them increasingly difficult to meet urban and agricultural water needs.
Finishes such as flame retardants, adding softeners for a luxurious handfeel, dyeing, printing, add value to the textile. Unfortunately vast amounts of chemicals and water are used during the various processes. The contaminated water is then released into ground, rivers and seas. Water is just one of the natural resources that are heavily polluted by the textile industry but it affects the ecosystem in a negative way. High water consumption Water is quickly becoming a scarce resource in certain countries.
Poorer water quality means water pollution. As we can see pollution is a human problem because it is a relatively recent development in the planet 's history. How does water pollution affect humans? Try drinking untreated water nowadays and your body will immediately react to it. You will get a stomach ache at the least.
Water pollution is one of the main problems of today’s society. Inorganic and organic contaminants release from various industries represents a serious threat to environment due to their accumulation throughout the food chain. Human as final consumer is more sensitive to such pollutants, since biomagnifications of contaminants occurs at each successive trophic level. Conventionally used methods became expensive and require aggressive conditions that may lead to generate secondary pollutants. Therefore, worldwide there is a continuous interest in development of new, effective and inexpensive techniques for the removal of pollutants.
Literature survey The concept of wastewater treatment first emerged in the 19th century (Esrey , 1998). The primary aim was to prevent the outbreak and spread of water borne diseases (Esrey , 1998). Pollution is a serious concern in the world and with the increasing population size and expansion industrialisation, it has become very control pollution naturally. One of the biggest contributors to pollution is domestic and industrial waste water (Esrey , 1998). Urbanisation and industrialisation has resulted in an increase in the amount of wastewater discharged into the environment.
The water is through evaporation of water oceans and lakes, and then fall to Earth rain kept the process called "water cycle." However, the growing population, increased economic activity and industrialization has led to increased demand for fresh water. In addition, rapid urbanization is changing consumption patterns. This is a serious misuse of water resources. Sewage and chemical discharge of untreated waste directly into rivers, lakes, canals has become a traditional
Although most of the earth's surface is covered with water, water shortage is a serious threat to the survival of humanity at present and in future. There is a water crisis which faces many parts of the world and it is a threat to survival of human beings since humans are primarily dependent on water. Shortage in drinking water is a major problem facing developing countries which have not taken drastic steps to harvest water and purify it to make it safe for human consumption. However, this problem is also being increasingly felt in developed countries where the population growth has strained available water resources and stretched the ability of governments and private firms to provide safe drinking water to the population. There are many conflicts around the world where people have died or have been injured as a result of clashes over a water resource.
According to Rowell (2012), with the ever ongoing and increasing industrial activities in developing nations across the globe, water quality in the most impoverished areas has become increasingly worse. Furthermore, bacteria and parasites in the waterways of third world countries are no longer the only worries; issues of mining and heavy industry pollution are now adding to the clean water crisis — often times in the form of toxic heavy metals. Lead, mercury, and cadmium are prime examples of such "toxic metals” (Adal, 2016). Mercury, lead, copper, iron, and other naturally-occurring metals find their way into our water sources by both natural- and man-made means such as agricultural and industrial waste and runoff (Crouse, 2014). Furthermore, Adal (2016) also stated that classic examples of environmental contamination include the Minimata Bay disaster and the current epidemic of arsenic poisoning in South East Asia.
The industrial wastes bring many disadvantages and bad consequences in terms of environmental damage and also finance. Industrial wastes can contaminate the environment, pollute rivers and water ways, and also damage the balance of ecosystems. With that being so, wastes produced by industries need to be treated so that they may be harmless or at least, less harmful. This, in turn, provides a cost for the government to pay. The growing trend for the industrial waste is that in terms of the amount, it is expected
Population in India is growing in an exponential manner. It is a well known fact that this growing population is a brusque to the limited water sources available in our country. Hence there is a need to develop cogent water supplies to balance the growing demand in the urban areas. One of the answers to the above problem is Rain Water Harvesting (RWH) which has been recognised as another source of water. But there is some apprehension due to large initial capital investments involved.