Waste water is toxic water that is produced as a byproduct in many industries. Before this water is expelled in the rivers and the sea and it was causing huge damage to the environment. Now a day, due to strict rules, industries are forced to clean the toxins from the water before it is expelled out from the industries. In order to clean that water, there are various steps that a company is bound to follow. Following are the few of them:

·        Preliminary step:

Preliminary steps involve the removal of garbage from the water. This is done manually by hands or by machines. In the preliminary step, impurities are removed in the cyclones and other steps. This is the first step in the Industrial Water Treatment.

·        Grit removal:

Grit removal is the procedure used to expel sand, residue, and coarseness from the water. Grit (and sand) expulsion is frequently found in the headworks of wastewater treatment plants (WWTP). Grit removal can likewise be utilized to expel sand from stream water admissions preceding handling for consumable water, use in mechanical applications to evacuate fine abrasives, and additionally being utilized to expel coarseness entrained in the muck.

After fast blending, the water streams into flocculation bowls, where the stream of water is moderated and the floc has room schedule-wise to become greater.

Sand in treatment plants diminishes process limit and expands upkeep costs. In WWTPs coarseness and other strong materials, for example, sugar sands and sediment are an expensive part of process water and wastewater, obstructing frameworks, lessening efficiencies and causing scraped spot harm and wear that prompts expanded cleaning, upkeep, and repair. Ordinary presumptions about the nature and conduct of coarseness imply that numerous coarseness evacuation frameworks may just expel 30-half of aggregate suspended solids (TSS). That material is passing downstream, scraping basic frameworks and forms, and bit by bit lessening the general viability of the office. As a rule, administrators may just be ignorant of how much coarseness they are absent.

Powerful grit removal evacuates the grating solids and sand before they have the opportunity to enter different procedures, disintegrate costly hardware, and store all through a treatment plant.

·        Clarifier:

Clarifiers are settling tanks worked with mechanical means for the ceaseless expulsion of solids being kept by sedimentation. A clarifier is, for the most part, used to expel strong particulates or suspended solids from the fluid for illumination.

·        Purification:

Water filtration is the way toward evacuating bothersome synthetic compounds, natural contaminants, suspended solids and gases from water. The objective is to create water fit for a particular reason. Most water is cleaned for human utilization (drinking water), however, water purging may likewise be intended for an assortment of different purposes, including satisfying the necessities of medical, pharmacological, synthetic and mechanical applications.

Purification of water is done with the help of different types of chemicals. For example, most extensively used chemicals are chlorine and ozone. These are used to purify the water because they do not affect the chemical composition of water and it can be removed very easily.