Know all about technology of waste water treatment and how touse them

From childhood we one is taught that water should never be wasted. Being one of the mostprized possession and gift of nature to man, this is to be conserved by every ounce.However, there are times when so much water is actually wasted by using only.

However, with growing population and increasing global complexities, waste watermanagement has become quite important. In this world where sustainable development isthe keyword, technology of waste water treatment is most important means of conservingthis gift. Thus, with the present technologies present, one should always look forward toupcoming technologies that are to bring about a change in conservation means.

Present technologies available:

Sewage treatment plants:

In this case, mostly domestic sewage is treated. Here, the soil biotechnology systemsare generally kept in stone masons, soil bunds which prevent their further flow.Starting with an under drain base, there are bio indicator and media housing cultureplants. Initially water is made to pass through the additive layer and then throughthe media.

Depending on water quality, this process can be single staged or multi staged and forfurther polishing, recirculation can be also done. Being a batch process, waste wateris first pumped into top surface of bioreactor. After collecting raw sewage into a tank,this sewage is pumped on the bioreactor from where it percolates via a geologicalmedia. For collecting sewage and recycled water, separate pipes are provided. Also,the raw elements can be combined with organic wastes to form useful manure.

Industrial effluent treatment plant:

This technology of waste water treatment is generally used for factories wherewaste is of a different kind. Since, water from factories are released into rivers,ponds and other open water areas, hence it needs special treatment. This is used toturn unhealthy and impure water into pure and treated water.

This can be used for municipal, industrial as well as domestic purposes and is mosteffective for treating recalcitrant molecules which cannot be treated by generalprocesses. Water polishing is also done in this method, especially water with lowBOD content is difficult to polish. There are also other things which have to beremoved such as oil, grease, tackle the pH content of water, organic and inorganicwastes.

Grey water recycling technique:

This is collection of water that is collected without any faecal matter. Generallywater from showers, taps, and basins are included in it. Since it is mostly devoid ofpathogens, it can be kept at home and then used after it has completedsedimentation. Or living walls or wetlands can be constructed as biological systemsto separate sludge from water. This is an upcoming technique in India and will bemade popular in some more time.

Zero liquid discharge:

This is the most important wastewater treatment technology of waste watertreatment. Here, no effluent is left over and wastewater that is produced is recycledagain. In this case, pre treatment and evaporation of industrial effluents is doneunless dissolved solids turn into crystals. Once, again this process is not much in usein our country but will be made available very soon with development work beinggoing on.

How to care for water:

Construction of technology of waste water treatment is quite a long drawn process.Though it is of primary importance, but first lake and river waters must be restored and ithas to be made sure that water released from various sources should be cleaned andtreated to save our mother nature.