Biological waste treatment plants use biological matter and bacteria to break down waste matter. Biological treatment systems are ideal for treating wastewater from households and business premises.<\/p>\n

Wastewater treatment plant process<\/h4>\n

Wastewater treatment plant process steps are numerous and heavily depend on the type and extend of the contamination.
\nWastewater treatment process consists of a combination of physical, chemical, and biological processes and operations to remove solids, organic matter and, sometimes, nutrients from wastewater.<\/p>\n

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Wastewater treatment process steps:<\/h4>\n

Preliminary treatment<\/h5>\n

Preliminary treatment is the removal of coarse solids and other large materials often found in raw wastewater.<\/p>\n

Primary treatment<\/h5>\n

Primary treatment is the removal of settleable organic and inorganic solids by sedimentation, and the removal of materials that will float (scum) by skimming.<\/p>\n

Secondary treatment<\/h5>\n

Secondary treatment is the further treatment of the effluent from primary treatment to remove the residual organics and suspended solids. Secondary (or biological) treatment uses microbes to consume dissolved organic matter that escapes primary treatment, converting it to carbon dioxide, water and energy for microbe growth and reproduction.<\/p>\n

Advanced treatment<\/h5>\n

Advanced wastewater treatment is employed when specific wastewater constituents which cannot be removed by secondary treatment must be removed. To eliminate specific contaminations to meet regulatory requirements, many plants must resort to special treatment, e.g., the Fenton process to remove non-biodegradable COD.<\/p>\n

Disinfection<\/h5>\n

After the primary treatment stage, the secondary treatment process and advanced treatment process, there are still some diseases causing organisms in the remaining treated wastewater. To eliminate them, the wastewater must be disinfected in tanks that contain a mixture of chlorine and sodium hypochlorite.<\/p>\n

Sludge Treatment<\/h5>\n

The sludge that is produced and collected during the primary and secondary treatment processes requires concentration and thickening to enable further processing.<\/p>\n

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Industrial wastewater disposal<\/h4>\n

Industrial sites for light, general and heavy industry build the economy and provide substantial employment opportunities. Industrial waste management practices may pose a significant risk to sensitive water resources.
\nAppropriate site location, provision of services, wastewater plant design and best operational management practices are needed to minimize this risk. In summary, the wastewater treatment process is one of the most important environmental conservation processes that should be encouraged worldwide.<\/p>\n