Recycling Wastewater is the New Trend

The recycling of the water is used when the water is no more used for any other purpose. The process removes the water from solids and impurities for irrigation purposes, to satisfy the commercial and industrial water needs, to recharge groundwater aquifers and for drinking purposes. The recycling is done to preserve the water. This process of preservation is termed as water conservation and sustainability. The recycled water is then used to develop aesthetics and benefit the ecosystem by using it for the stream flow augmentation.

As stated by Levine and Asano, the wastewater is the product of water reclamation to attain the need of biodegradable materials, pathogens and suspended water. The recycled water can therefore be used for various other purposes, that is, for industrial, irrigation and drinking. The scientifically-proven advances in wastewater treatment systems grants the further use of wastewater.  Depending on the source, he water is treated differently on the use of water and how it is delivered.

The wastewater treatment systems depend on the overall field of public works- sewage treatment, storm water management, solid waste management. Water predominantly from the municipal sources and small industries is called as sewage and the treatment is termed as the sewage treatment.

The disposal water is the prime concern even if it occurs after the disposal or reuse. Disposal and reuse of the water is the basic treatment decision. The transportation costs often decide the acceptable impurity concentration as per location of disposal. Anyhow expensive treatment requirements may embolden the selection of disposal location on the basis of impurity concentrations.

This process of recycling includes various processes-

-          PHASE SEPERATION

-          SEDIMENTATION

-          FILTRATION

-          OXIDATION

-          BIOCHEMICAL OXIDATION

-          CHEMICAL OXIDATION

-          POLISHING

Phase separation- it basically transfers impurities into non-aqueous phase. It may occur at intermediate points in treatment sequence to eradicate the solids generated during oxidation or polishing.

Sedimentation- When density differences are sufficient to overcome dispersion by turbulence, solar and non-polar impurities may be detached from wastewater by gravity.

Oxidation- The biochemical oxygen demand of impure water reduces oxidation. This may even reduce the toxicity of some impurities. Chemical oxidation is generally used for disinfection. Some impurities are converted to carbon dioxide, water and bio solids by secondary treatment

Biochemical oxidation- Biological oxidation preferentially removes organic compounds used as a food supply for the treatment of ecosystem.

Polishing- Polishing intends to the above methods.