Question

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⊙ Give me a speech on waste water management


⊙ Speech should be of 6 mins with content quality.


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Answer 1

Today is the World Environment Day and our company has always emphasized on adopting environment-friendly measures and doing waste management. I would like to share some important thoughts on waste management on this occasion.

Waste disposal or waste management refers to managing the waste from its initiation to its final removal. This includes collation, transportation, processing, re-cycling and finally disposal of waste along with monitoring, regulation and control. It also covers the lawful and regulatory aspects that relates to the waste management, including the instructions and guidance on recycling and disposal of waste management, etc.

The phrase usually relates to all types of waste, whether produced during the withdrawal of raw materials, the dispensation of raw materials into final goods, consumption of final good, or other human activities such as metropolitan (institutional, residential and commercial), farming and social (household hazardous waste, health care and sewage sludge, etc.) The objective of the waste management is to minimize the hazardous effect of waste materials on health, environment or aesthetics.

The practice of waste management varies country-wise (developed and developing nations), region-wise (urban and rural area) and sector-wise (residential and industrial). While urban regions may employ advanced machines and latest technology to supervise the waste, rural areas may be more dependent upon the human labour; residential areas may utilize safe and sound process whereas industries may utilize giant machines, etc in order to control the factory waste products. The waste materials at the institutional and residential level in the metros and cities are administered by the local authorities also known as Municipal Corporation; while the management of harmless industrial and commercial waste is accomplished by the generator of those waste.



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I would now like to point out the most commonly used methods for waste management:

Landfills – This is managed by throwing the daily garbage in the landfills; it is the most common method used today.

Recovery and Recycling – Through this method, the useful items from the discarded is extracted for the next use such as conversion into energy, usable heat, fuel, electricity, etc.

Combustion or Incineration – In this method, community solid wastes are burned at high temperatures in order to convert the same into gaseous products or residue.

Plasma Gasification – Plasma is a basically an electrically charged gas. In this method, the molecular bonds of the waste are broken down due to the intense heat in the container.

Waste to Energy – In this method, the non-recyclable waste materials are converted into useful electricity, heat or fuel through various processes.

Composting – It is a natural process of bio-degradation; it converts the kitchen, plant and garden waste into nutritional food for the plants.

Waste Minimization – The best method is to minimize the creation of waste products by repairing the broken utensils, avoidance of plastic bags, etc.





It is important that we are protective towards our environment and always follow the 3Rs of waste hierarchy: ‘Reduce’, ‘Re-use’ and ‘Recycle’ in order to save our environment.

Thank You!





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Answer 2

hola mate

answer:-

Waste water is water flushed out after being used. There are a few components of waste water which includes residents’ also known as domestic wastewater such as shower, toilet or sink. Next is industrial such as factories, shop lots and shopping center have wastewater from manufacturing and production. For example food production and textile production uses water for their manufacturing processes and hence these waters are also known as waste water. It may also include storm water or sewage water which is rain water after being immovable at the surface not being able to flow through streams, seas or rivers.

A few tanks are being uses for biological waste water treatment like municipal treatment plant to treat wastewater that is being directed to it. Firstly, waste water is filtered and screened to filter out large waste particles such as debris and unwanted object that could evidently destroy the treatment plant’s equipment. After that, primary settling tank is used by removing heavy solid organics temporarily while the rest of the water is then diverted to the secondary treatment tank where it requires a separation process in order to isolate biological matter like bacteria, protozoa, viruses and algae.

Waste Water Treatmet in 3rd world Countries

In the Third World, the effects of water pollution are felt in the form of high rates of death from cholera, typhoid, dysentery, and diarrhea from viral and bacteriological sources. More than 1.7 billion people in the Third World have an inadequate supply of safe drinking water. In India, for example, 114 towns and cities dump their human waste and other untreated sewage directly into the Ganges River. Of 3,119 Indian towns and cities, only 209 have partial sewage treatment, and only eight have complete treatment. In many parts of the world, such as the Mediterranean or The Middle East; there is a great lack of water and consequently a big demand for reuse of the cleaned sewage water.

In many countries especially in third world countries, the sewage treatment systems in the big cities is inefficient and there is a demand for local cleaning on site before the wastewater is discharged.