Introduction:
This is the era of development. Electricity has played a vital role for the socioeconomic
development of the country. Now almost all the devices are operated by
electricity. So to generate electricity, power plant is very necessary.
Power plant:
Power plant is an assembly of equipment that produces and delivers mechanical and
electrical energy. A power plant is also referred to as a generating station or
powerhouse. It is an industrial facility for the generation of electric power.
River water screening System:
Water is the most important thing in a steam power plant. Water supplies generally are
divided into two major categories: surface water and ground water. Surface water is
available from rivers lakes and other impoundments as well as the sea. Ground water is
present is below the earth’s surface.
In Ashuganj Power plant, water is collected from the river Meghna. This water
comes through 3 channels. One channel is for CCPP, ST-1 & ST-2 and one channel is
for ST-3, ST-4 & ST-5 and other channel is for demi water.
This water is used mainly for generation of steam, for condenser, cooling of
overall system, cooling of lubricating oil, for chillers etc. So to use the water efficiently
water screening system is essential. There are three steps of water screening system.
They are described in below:
1. Heavy-duty Bar: It’s the first stage of screening system. In this stage water
is screened by trust rack. Heavy wastes like wooden piece, dead animals,
water hyacinth etc. are removed in this stage.
2. Rotating Bar: In this stage water is screened by scrapers. Smaller waste
than heavy-duty bar waste are removed in this stage.
Figure: Water screening system with Rotating and Band screening bar.
3. Band Screening Bar: It is a process where 57 baskets are arranged in such
a way that screens the water by passing water through net to remove very
small wastes like small pieces of stones, sand etc. It is the most effective and
modern screening process. A tray is placed below the baskets (net) that takes
the waste which is separated from nets by spraying water
This is the era of development. Electricity has played a vital role for the socioeconomic
development of the country. Now almost all the devices are operated by
electricity. So to generate electricity, power plant is very necessary.
Power plant:
Power plant is an assembly of equipment that produces and delivers mechanical and
electrical energy. A power plant is also referred to as a generating station or
powerhouse. It is an industrial facility for the generation of electric power.
River water screening System:
Water is the most important thing in a steam power plant. Water supplies generally are
divided into two major categories: surface water and ground water. Surface water is
available from rivers lakes and other impoundments as well as the sea. Ground water is
present is below the earth’s surface.
In Ashuganj Power plant, water is collected from the river Meghna. This water
comes through 3 channels. One channel is for CCPP, ST-1 & ST-2 and one channel is
for ST-3, ST-4 & ST-5 and other channel is for demi water.
This water is used mainly for generation of steam, for condenser, cooling of
overall system, cooling of lubricating oil, for chillers etc. So to use the water efficiently
water screening system is essential. There are three steps of water screening system.
They are described in below:
1. Heavy-duty Bar: It’s the first stage of screening system. In this stage water
is screened by trust rack. Heavy wastes like wooden piece, dead animals,
water hyacinth etc. are removed in this stage.
2. Rotating Bar: In this stage water is screened by scrapers. Smaller waste
than heavy-duty bar waste are removed in this stage.
Figure: Water screening system with Rotating and Band screening bar.
3. Band Screening Bar: It is a process where 57 baskets are arranged in such
a way that screens the water by passing water through net to remove very
small wastes like small pieces of stones, sand etc. It is the most effective and
modern screening process. A tray is placed below the baskets (net) that takes
the waste which is separated from nets by spraying water
Very interesting post. Thanks for sharing it! It is always a joy to learn something that I didn't know. I have you to thank for teaching me something new.
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