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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="Harsh, Harsh Choudhary, Arya Gawde">
<meta name="description"
content="We are part of an initiative to treat wastewater safely and ecologically into a purified form. We also aim to make more people aware about saving water.">
<!-- og = open graph data -->
<meta property="og:image" content="../img/logo.jpg">
<meta property="og:image:width" content="15%" />
<meta property="og:image:height" content="15%" />
<meta property="og:description"
content="We are part of an initiative to treat wastewater safely and ecologically into a purified form. We also aim to make more people aware about saving water.">
<meta property="og:title" content="AHH WWT">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!--used to make webpages responsive-->
<link rel="icon" href="img/AH2-Logo.ico" type="image/x-icon">
<!--This puts an icon of specified image on the tab of browser.-->
<link rel="stylesheet" href="css/homepage2.css">
<title> Steps of Purification | AH² Wastewater Treatment Plant</title>
<style>
.activecitizenbody {
margin-left: 7%;
margin-right: 7%;
}
.members {
border: 0px;
float: none;
}
.container {
border: 0px;
float: none;
background: none;
list-style-type: disc;
}
</style>
</head>
<body>
<header>
<span class="span1">
<a href="#">
<img src="img/AH2-Logo.jpg" title="Home" style="float: right; width: 7%; padding: 1%;">
</a>
<h2> AH<sup>2</sup> Wastewater Treatment Plant </h2>
</span>
</header>
<div class="menu">
<ul>
<div class="drop">
<li><a href="index.html" style="text-decoration: none;"><span> Home</span></a> </li>
</div>
<div class="drop">
<li> <span> About Us </span>
<div class="dropitmcontent">
<a href="aboutus.html"> Mission </a>
<a href="contact-us.html"> How to Reach Us </a>
<a href="#"> CEO </a>
</div>
</li>
</div>
<div class="drop">
<li><span> Steps and Solutions </span>
<div class="dropitmcontent">
<a href="contaminant-survey-login.html"> Contaminant Surveys </a>
<a href="steps-putification.html"> Steps of Purification</a>
<a href="active-citizen.html"> Become an active citizen! </a>
<a href="dumping-ground-status.html"> Dumping Ground Status</a>
<a href="future-project.html"> Future Projects </a>
</div>
</li>
</div>
<div class="drop">
<li><span> Collaborations </span>
<div class="dropitmcontent">
<a href="https://iitgoa.ac.in"> National Collaboration </a>
<a href="#"> Global Collaborations </a>
</div>
</li>
</div>
<div class="drop">
<li><span> Contact Us </span>
<div class="dropitmcontent">
<a href="contact-us.html"> Contact Us </a>
<a href="mailto:[email protected]"> Harsh </a>
<a href="mailto:[email protected]"> Harsh Choudhary</a>
<a href="mailto:[email protected]"> Arya Gawde</a>
</div>
</div>
<li style="float: right;"><a href="contaminant-survey-login.html" class="functioning"> Login</a></li>
</li>
</ul>
</div>
<!-- hr width="100%;" style="background-color: rgb(116, 180, 107);" size="15" -->
<div class="activecitizenbody">
<h1 style="text-align: center;"> Steps of Purification</h1>
<hr>
<br>
<h1 style="text-align:center"><u>Steps of purification we take...</u></h1>
<p>Treatment of waste water involves physical, chemical and biological processes, which remove physical,
chemical
and biological
matter that contaminates the wastewater.
</p>
<div>These are the steps we pass the waste water through:-</div>
<ol>
<li>
<h2><u>Physical treatment</u></h2>
<ol type="i">
<figure><a id="bar screen"><img src="img/bar screen .jpg" alt="Image of bar screen"
title="source: www.indiamart.com"
style="display: block; margin-left: auto; margin-right: auto; width: 50%;">
<br>
<figcaption><cite>www.indiamart.com</cite>
<caption>Bar Screens</caption>
</figcaption>
</a></figure>
<li>
Wastewater is passed through <a href="#bar screen">bar screens</a>. Large objects like rags,
sticks,
cans, plastic packets,
napkins are removed. </li>
<figure><a id="grit"><img src="img/grit and sand removal tank.jpg"
alt="image of grit and sand removal tank" title="source: savi-water.com"
style="display: block; margin-left: auto; margin-right: auto; width: 50%;"></a><br>
<figcaption><cite>www.savi-water.com</cite>
<caption>Grit and Sand removal tank</caption>
</figcaption>
</figure>
<li>Water then goes to a <a href="#grit">grit and sand removal tank</a>. The speed of the incoming
water
is decreased to
allow sand, grit and
pebbles to settle down.
</li>
<figure><a id="water clarifier"><img src="img/water clarifier.jpg" alt="image of water clarifier"
title="source: www.indiamart.com"
style="display: block; margin-left: auto; margin-right: auto; width: 50%;">
<br>
<figcaption><cite>www.indiamart.com</cite>
<caption>Water Clarifier</caption>
</figcaption>
</a></figure>
<li>The water is then allowed to settle in a <a href="#water clarifier">large tank</a> which is
sloped
towards the middle. Solids like
faeces settle at
the bottom and are removed with a scraper. This is the <a href="#sludge treatment">sludge</a>. A
skimmer removes the floatable solids like oil and grease.
Water so cleared is called clarified water.
</li>
</ol>
</li>
<li>
<h2><u>Biochemical treatment</u></h2>
<ol type="i">
<figure><a id="aerator"><img src="img/aerator.jpg" alt="image of aerator"
title="source: www.indiamart.com"
style="display: block; margin-left: auto; margin-right: auto; width: 50%;">
<br>
<figcaption><cite>www.indiamart.com</cite>
<caption>Aerator</caption>
</figcaption>
</a></figure>
<li><a href="#aerator">Air</a> is pumped into the clarified water to help aerobic bacteria to grow.
Bacteria consume human
waste, soaps and
other unwanted matter still remaining in clarified water.
</li>
<li>After several hours, the suspended microbes settle at the bottom of the tank as <a
href="#activated sludge">activated sludge</a>.
The water is then
removed from the top.
</li>
<li>The treated water is then discharged into a sea, a river or into the ground. Nature cleans it up
further.
<blockquote style="background-color: yellow">Sometimes it may be necessary to disinfect water
with
chemicals before releasing it into
the
distribution system.
</blockquote>
</li>
</ol>
</li>
</ol>
<a id="sludge treatment">
<h2><u>Sludge Treatment</u></h2>
</a>
<p>The sludge is transferred into a seperate tank where:-
<ol>
<li>It is treated with anaerobic bacteria. </li>
<li>The biogas produced in the process is used as fuel and also for producing electricity.</li>
</ol>
</p>
<a id="activated sludge">Activated sludge is about 97% water. The water is removed by sand drying beds or
machines.
Dried sludge is used as manure, returning
organic matter and nutrients back to the soil.
</a>
<br>
<a href="index.html" title="Homepage"><button style="background-color: #0011FF; border: none; color: white; padding: 15px 32px; text-align: center; text-decoration: underline;
display: inline-block; font-size: 16px;"> Back to home</button></a>
</div>
<br>
<br> <br> <br>
<a href="#top" id="bottom" title="Top" target="_self"><button style="background-color: #0011FF; border: none; color: white; padding: 15px 32px; text-align: center; text-decoration: underline;
display: inline-block; font-size: 16px;"> Top</button></a>
<div class="footer">
<div style="width:32%; text-align: center; padding:10px; color: #FDDA0D"> <span><b>Small Navigation
Menu</b></span>
<br>
<div>
<ul style="background-color: #FDDA0D; text-decoration: none; color: blue;">
<li style="background-color: #FDDA0D; "> <a href="contaminant-survey.html">Contaminant
Surveys </a></li><br>
<li style="background-color: #FDDA0D; text-decoration: none; color: blue;"><a
href="steps-putification.html">Steps of Purification</a></li><br>
<li style="background-color: #FDDA0D; text-decoration: none; color: blue;"><a
href="active-citizen.html">Become an active citizen! </a></li><br>
<li style="background-color: #FDDA0D; text-decoration: none; color: blue;"><a
href="dumping-ground-status.html">Dumping Ground Status</a></li><br>
<li style="background-color: #FDDA0D; text-decoration: none; color: blue; "><a
href="future-project.html">Future Projects </a></li>
</ul><br>
<br><br><br><br><br><br><br><br>
</div>
</div>
<div style="width:32%; text-align: center; padding:10px;"> <span>Establishment Information(In short) </span>
<br>
<p>Our WWTP was setup in October 2020. The plant was built on a plot of 20 hectares.
Over time, we have extended our land area by 30 hectares and are expanding our reach even more. We hold
copyright over our site, so copying any item or
design from our project is a punishable offence.
We hold copyright over our site, so copying any item or
design from our project is a punishable offence.
We hold copyright over our site, so copying any item or
design from our project is a punishable offence.We hold copyright over our site, so copying any item or
design from our project is a punishable offence.
</p>
</div>
<div style="width:32%; text-align: center; padding:10px; color: #FDDA0D;"> <span> <b>Quick Contacts </b></span>
<p>
<ul style="background-color: #FDDA0D;">
<li style="background-color: #FDDA0D;"><a href="https://aryagawde.github.io" title="Midterm Page"> Arya
Gawde</a></li><br>
<li style="background-color: #FDDA0D;"><a href="https://harsh8692.github.io/" title="Midterm Page">
Harsh </a></li><br>
<li style="background-color: #FDDA0D;"><a href="https://harsh-choudhary-iit-goa.github.io"
title="Midterm Page">Harsh Choudhary</a></li>
</ul>
</p>
<p>
<address style="color: white; ">LT-3, Admin Block,<br>
Indian Institute of Technology (IIT) Goa,<br>
Farmagudi, Ponda,<br>
Goa - 403401.<br>
Contact Number (Landline): 0123456789</address>
</p>
</div>
</div>
<div class="footer">Copyright © 2022/, AH<sup>2</sup>wastewater treatment plant</div>
</body>
</html>