Biotech Articles
Publish Your Research Online
Get Recognition - International Audience

Request for an Author Account   |   Login   |   Submit Article

Methods of Wastewater Treatment

BY: Amna Adnan | Category: Environmental-Biotechnology | Submitted: 2010-08-20 20:18:10
       No Photo
Article Summary: "Wastewater treatment used to clean the wastewater and sewage. There are three processes through which it can be purified. Biological, Physical and Chemical Water Treatments..."

Share with Facebook Share with Linkedin Share with Twitter Share with Pinterest Email this article

Waste water treatment:-
Wastewater treatment is the process of cleaning the sewage and domestic water by removing contaminants in the form of organic matter. It is done so to improve the quality of water so that humans and animals can consume it and make use of it for other purposes.

Methods of cleaning the wastewater:-
There are three different methods for wastewater treatment.

Biological Water Treatment:-
When the water is used for drinking or cleaning, it should be cleaned so that there are no contaminants in it which can affect the human health. For this purpose, biological water treatment is used in which microorganisms especially bacteria play an important role. They decompose the wastewater biochemically or they break don the organic material and improve the quality of water so that it can be used domestically. Biological water treatment is divided into three categories that are aerobic, anaerobic and composting.

- Aerobic process:-
In this process, bacteria degrade or eat the organic matter and convert it into carbon dioxide which can be used by plants for their growth. Oxygen is used during aerobic process.
- Anaerobic Process:-
In thi s process, fermentation process is used to ferment the sludge or waste at a specific temperature. Oxygen is not used in this process.
- Composting:-
It is the type of aerobic process in which in the presence of oxygen, sludge is mixed with sawdust or other carbon sources. In this way, wastewater is treated.
Everyday, wastewater or sewage is produced. It is produced when waste of factories is thrown in the lakes and ponds; it makes the water dirty and unhealthy for human use as well as for the water creatures like fish. Sewage is also the wastewater produced at home. It is necessary to treat this water effectively to use it for drinking. Before it is used for drinking or other environmental purposes, it should be transferred to the sewage treatment plants with great care because if there is leakage in the pipe, it will damage the clean water and soil. It is necessary to clean the wastewater otherwise it will become a source of causing diseases in humans.

Physical Water Treatment:-
In this method physical methods are used in cleaning the wastewater and making its quality better. In this method, no chemicals are biological processes are involved. There is a prominent method for physical water treatment called sedimentation. Sedimentation is a process of suspending out the insoluble heavy particles from the wastewater. This method is best for purifying the water. When the insoluble materials settle down at the bottom of the water, pure water is removed.

Another method which can be used for physical water treatment is called as aeration. In this process air is circulated through the water to provide oxygen to it. It is also an affective method of cleaning the wastewater. Another method filtration is used to filter out the contaminants. Special kinds of filters are used to pass sewage or wastewater due to which the insoluble particles or contaminants are separated. The mot commonly used filter is the sand filter. Some wastewaters contain grease or oil on their surface; they can also be removed from the surface easily.

Chemical Water Treatment:-
As the name shows, to clean the water or sewage, chemicals are used. Most commonly used chemical is chlorine and the method in which chlorine is used called as chlorination. Chlorine is the oxidizing chemical used to kill the bacteria which decomposes water by adding contaminants to it. Another oxidizing disinfectant called as ozone is used to purify the wastewater. These chemicals are very useful as they disallow the bacteria to reproduce in the water thus making the water pure. When the treatment of industrial wastewater is concerned then a special method is used called neutralization. A base or acid is added to the water to level its pH. Lime is the base which is most commonly used in the acidic wastewaters. Metals which have more than one valence are most commonly used chemicals in the chemical wastewater treatment. There are some methods of purifying sewage and wastewater which are used in both physical and chemical water treatments. Carbon usage is the best example which has the ability to adsorb harmful substances from the wastewater.

About Author / Additional Info:

Search this site & forums
Share this article with friends:

Share with Facebook Share with Linkedin Share with Twitter Share with Pinterest Email this article

More Social Bookmarks (Digg etc..)

Comments on this article: (7 comments so far)

Comment By Comment
cv gunasinghe
2010-11-21 22:13:03 97
Actually very nice web page.. we want more of them...
Amna Adnan - Author
2010-11-23 00:02:08 99
Thanks :)
Srujan Kumar
2010-12-05 12:12:19 104
It helped me very lot. Thank you for all Authors.......:)
Amna Adnan - Author
2010-12-05 20:39:16 105
Thanks! It is my aim to provide the readers such information which they can use in their projects and assignments and can also increase their knowledge.
2011-05-27 07:55:54 175
informative article..keep it going Cheers
2012-05-23 14:11:40 297
Really very useful and interesting data.....I personally was fascinated with these features of biotech in various environmental processes.Really Thanks a lot for useful info...
dulce colasito
2014-09-14 18:20:04 831
Its very informational. Students can easily understand the importance of waste water and how it is applied

Leave a Comment   |   Article Views: 22320

Additional Articles:

•   Sea Buckthorn: Vulnerable Wonder Plant of Ladakh, Jammu and Kashmir

•   Biocontrol Potential of Compost

•   Issues in Biotechnology

•   Next Generation Sequencing Techniques: The future of DNA Sequencing

Latest Articles in "Environmental-Biotechnology" category:
•   Advantages and Disadvantages of Biofuels

•   Phytoremediation For Heavy Metals

•   Biotechnology For a Clean Environment

•   Steps Involved in Nitrogen Cycle

•   Biotechnology and Environment Protection

•   Greenhouse Effect - Importance and Types

•   Biological Degradation of Xenobiotics

•   Phytoremediation - Greener Approach to Control Pollution

•   Impact of Waste Management

•   Waste Water Treatment Steps: Primary, Secondary and Tertiary Treatment

•   Bioremediation - A Weapon to Tackle Oil Spills

•   Phytoremediation - Use of green plants to remove pollutants

•   The History of Botany | Botanists in Philippines

•   Bioremediation by Cold Tolerant Microbes

•   Cold Adaptation by Microorganisms

•   Succession Stages of Xerosere

•   The Climax Concept - Theories and Categories

•   Succession Stages of Hydrosere

•   Bioextraction Mechanisms of Metals From Their Ores

Important Disclaimer: All articles on this website are for general information only and is not a professional or experts advice. We do not own any responsibility for correctness or authenticity of the information presented in this article, or any loss or injury resulting from it. We do not endorse these articles, we are neither affiliated with the authors of these articles nor responsible for their content. Please see our disclaimer section for complete terms.
Page copy protected against web site content infringement by Copyscape
Copyright © 2010 - Do not copy articles from this website.

Agriculture Bioinformatics Applications Biotech Products Biotech Research
Biology Careers College/Edu DNA Environmental Biotech
Genetics Healthcare Industry News Issues Nanotechnology
Others Stem Cells Press Release Toxicology  

  |   Disclaimer/Privacy/TOS   |   Submission Guidelines   |   Contact Us