According to the Policy, Law and Natural Resources and Environment Page; of the current landfills, only about 20% are sanitary landfills, the rest are unsanitary landfills or communal waste collection sites. The overloaded and unsanitary state of landfills has caused many serious problems, especially the pollution of groundwater from leachate, thereby affecting human health and living environment.
However, very few people know about this type of wastewater, so what is leachate and what are its harmful effects? Let's learn about this type of wastewater with Nanoen in the article below!
What is leachate?
Leachate is dirty water that flows through waste layers, carrying pollutants into the lower layers of the landfill. Because it is formed from the decomposition of waste, leachate contains very high levels of pollution and is very toxic. In addition, the concentration and pollution composition of leachate also depends on the age of the landfill, the composition of waste, and the physical, chemical, and biological reactions that occur during the decomposition process.
The main sources of leachate include:
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Water available in waste and water squeezed from the pores created by compaction equipment.
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Rainwater flows down and seeps into waste layers.
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Humidity of waste, decomposition of organic matter in waste.
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Water from covering materials, water from sludge (if sludge is allowed to be buried) ...
Leachate at centralized landfills
Leachate can be divided into two types: Leachate from initial collection points in residential areas and from large-scale centralized landfills, which are then collected in reservoirs. Depending on the different sources of waste, seasons, climates, natural conditions and storage times, leachate in each place has different characteristics. And regardless of the environment, this type of liquid causes foul odors and serious pollution.
What effects does leachate have on humans?
Leachate will cause many effects on people and the environment in the surrounding area such as:
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Generates unpleasant odors.
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Leachate seeps into the soil, polluting the soil and groundwater.
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Disease-causing insects, flies, mosquitoes, etc. appear, directly affecting human health.
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Hinders the self-cleaning process of water sources.
Leachate contains very high concentrations of BOD, COD, high levels of Nitrogen, Phosphorus, Ammonium, heavy metals, microorganisms and pathogenic bacteria. Normally, leachate is often black or dark brown...
With high concentrations of pollutants that are difficult to biodegrade, it is necessary to combine many methods in a wastewater treatment system to remove these pollutants such as mechanical, chemical, biological and advanced oxidation treatment.
Leachate sample at a centralized landfill
Leachate, if not properly cared for, will bring many unpredictable consequences to the environment as well as human health. Not only does it smell bad and pollute the environment, leachate gradually shows its dangers when the rainy season begins and contributes to spreading to the surrounding environment. Therefore, the construction and installation of leachate treatment systems is something that many localities and cities need to pay attention to.
Prestigious unit providing environmental profile services and constructing wastewater treatment systems
Nanoen is a unit operating in the environmental field. During its operation, Nanoen has received the trust of customers for its honesty, dedication and responsibility towards customers and the company's products.
With a team of experienced staff, we have a full range of services from environmental profile consulting to design and construction, environmental treatment system operation, microbiological supply, sludge pressing for hire, etc.
Nanoen is always ready to bring the best service experience, suitable for the needs of customers.
NANO ENVIRONMENT TECHNOLOGY - CONSTRUCTION LIMITED LIABILITY COMPANY
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