What is the role of Environmental Remediation in Green Economy?
Purification of the environment is an important focus of the green economy. The Industrial activities, use of pesticides and fertilizers, or other pollutants need to cleanse what is in them, or to repair the nature to its natural state.
Before enforcing modern environmental law, many companies simply released pollutants into the environment. They will throw away chemicals and other pollutants in unused land, lakes, rivers, and streams. Contamination can also be due to accidents or equipment failures. Contaminated site should be cleaned and restored.
What is Environmental Remediation?
Environmental remediation is the removal of pollutants from water and soil. The waste products / toxins have been removed to protect human health.
Refurbishment projects usually start with a site evaluation and determine the cost. Assessment needs to be done to identify potential dangers to workers who are working on a project and assess the impact of pollution on the community. Overall impact on the community and its environment shall be assessed. If contamination is suspected, degree of contamination should be assessed.
The historical use of the site and the materials used and manufactured at the site determine:
· Evaluation strategy
· Sampling type
Then we can perform a chemical analysis.
In many cases, even if current land use appears harmless, nearby areas are also polluted. For example, parking lots may be levelled with contaminated waste for backfilling. Also,it is often important to consider pollution of adjacent offsite for decades. Soil, groundwater, and atmospheric emissions should be characterised from topsoil, surface water, and groundwater. Nearby properties should also be tested before and after each refurbishment.
Types of environmental restoration:
Environmental remediation is carried out on a variety of environmental media, including soil, sediments, groundwater, and surface water. Water purification includes groundwater and soil restoration include topsoil, subsoil, and sediments. With the floor Water purification can be performed separately or together, depending on the type and level of pollution.
By draining in the water or from the ground, groundwater can be contaminated by pollutants leaching from soil and sediments above it, or by industrial practices such as: Mining or drilling of natural gas and oil. Soil repair refers to the strategy used to clean and rejuvenate the soil. Soil Pollution is caused by many of the same factors that cause groundwater pollution. Soil and groundwater are often contaminated from the same source and must be fixed at the same time. Soil pollution can be caused by chemical spills, industry activities and uses of specific fertilizers and pesticides.
Restoration technology:
Restoration techniques vary but can be divided into ex-situ and in-situ Method.
>On-site repair methods treat construction sites without removing contamination floor
>In out-of-habitat rehabilitation, soil or sediment is excavated and pre-treated and returned to the original state.
>Excavation
>Pumping and processing
>Heat desorption
>Coagulation and stabilization
>Oxidation
>Nano repair
>Floor air extraction
>Bioremediation
If we are restoring our environment, it automatically leads to developments in the countries and thus increasing the economy, both financially and by preserving nature.
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