| Waste water is considered water that is the | | | | waste. The solid waste is removed from the water |
| byproduct of human industrial and commercial | | | | and the fluid is all that is left. |
| activities. This water is consumed with many | | | | To remove the solid waste, a variety of techniques |
| different substances that can be toxic and a hazard | | | | will be used. The most common technique is called |
| to all living things and bad for the environment. To | | | | sedimentation. The sedimentation process will happen |
| make this water clean and usable again for the | | | | when the waste water is left to sit and all the large |
| environment, it has to complete a waste water | | | | solid waste falls to the bottom of the water. It |
| treatment process. | | | | becomes a sludge or slurry mess. |
| Waste Water Contaminants | | | | For the solid waste that is smaller in size, an |
| Waste water contains many contaminants. These | | | | ultra-filtration system is used. A different method for |
| contaminants can be classified as biological or man | | | | removing this fine solid waste is by using the |
| made substances. The biological substances are | | | | flocculation technique. This technique uses the |
| bacteria, fungus, and algae. The man-made | | | | poly-electrolytes and also the alum salts to remove |
| substances would be like chemicals. | | | | the solid waste. |
| The waste water that comes from commercial and | | | | Removing Oil And Grease |
| industrial activities that include iron creation has | | | | The second part of the waste water removal |
| chemicals like ammonia and cyanide, in it. Industry | | | | process is to get rid of the oil and grease in the |
| that processes coal has a production of waste water | | | | waste water. Skimmer devices are used to |
| that is filled with cyanide, benzene, anthracene, | | | | accomplish this. The skimmer process will only work |
| cresols, phenols, and ammonia, naphthalene, and | | | | on the oils that are in the water surfaces that are |
| polyaromatic hydrocarbons. These hydrocarbons and | | | | open. For oils of any type, including the hydraulic oils, |
| organic substances are of a complex nature. | | | | skimming may not be the right answer because of |
| Treatment Of The Waste Water | | | | the emulsified and soluble substances in it. To get rid |
| More than one method can be used to treat the | | | | of these oils, a solvent to surfactant will need to be |
| waste water. Each of these methods is very | | | | added to the water. |
| complicated process for getting rid of the harmful | | | | Ridding The Water Of Organics And Acids |
| substances in the waste water. The processing is | | | | The last step in the waste water treatment process |
| completed to make the waste water flow that is | | | | is to rid the water of hard and soft organics and also |
| attractive to the bacteria than can transform the | | | | alkaline and acidic compounds. This removal also |
| waste into solid matter so that it can be removed | | | | includes toxic materials. Many techniques can be used |
| from the water to recycle it into the environment. | | | | for these last stages that involve compelling methods. |
| Waste water treatment steps include: | | | | Some of the methods that are used for this last |
| Getting Rid Of Solid Waste | | | | stage of treatment for the waste water are |
| The first step that needs to be preformed in the | | | | incineration, distillation, adsorption, vitrification, |
| waste water treatment is getting rid of the solid | | | | chemical immobilization, and disposal in a landfill. |