Waste Water Treatment Conclusion: There are a lot of processes and techniques that are available to eliminate N2 contents from the waste water treatment plants but discussing all of them is beyond the scope of this study as in this study only cost effective and low installation cost requiring techniques are mention that includes trickling filters, fluidized sand filters, bioreactors, adsorbers and ion exchange method. Merits & demerits of these processes are mentioned in the study and optimum solution of those issues are also mentioned. The above-mentioned processes need small room or space for their installation and can operate at low electricity supply resulting in low operating cost. Still, this is noticed that the technique that can eliminate thoroughly from the waste water has not been developed without any side effects. The reason behind this involves many parameters that become challenge in removal of nitrogen. For example, temperature, pH and alkalinity. The removal of TSS and BOD is easy task but this has close relationship with the N2 presence. Thus, considering these difficulties, the technique is applied on optimum point. Moreover, the removal efficiency of N2 also relies on the site nature and the nature of the water being treated. Different techniques have different efficiencies for the removal of nitrogen for example, if there is a lot of contaminants present, then the use of trickling filters should be avoided because there would occur clogging, and bioreactors will be preferable. Some technique involves the pre-treatment of waste water before introducing into the filter. There are several options mentioned for the sake of efficiency increasing of the same technique. The removal efficiency of trickling filter lies in between 0-35% while in case of recirculated sand bed filters this removal efficiency approaches to almost 80-90%. As mentioned above, Bio-reactors are much efficient for this removal as well. Fluidized sand bio filters have removal efficiency of nearly 86 to 88%. In case of ion exchange method, zeolites are responsible for N2 content removal and are efficient in the range of 16.22% to 93.79%. Likewise, using adsorption phenomenon, for example, biochar that is produced by the pyrolysis of bamboo is very much effective in the removal of N2 contents. As a Waste Water Treatment Conclusion: This biochar is more effective than activated carbon due to its ability of regeneration along with excellent properties of adsorption.
Please follow and like us: