Trickling Filters Studies For Waste Water Treatment Plants

Trickling Filters Studies For Waste Water Treatment Plants

Trickling Filters Studies For Waste Water Treatment Plants WWTP: Different approaches are adopted using trickling filters for elimination of NH3 that involves irregular Polyether-sulphone membrane which works at very low pressure (4 to 8 bar) and eliminates NH3 from wastewater ranging from 75.42 to 85.3 percent . RO (Reverse-osmosis) can be used for removal of NH3 up to 92 percent from culture water RO process involving wind speed 2.9 to 6.0 meters/second utilized for N2 removal ranging from 90 to 97 percent in culture water of tilapia. A bi-layer trickling filter was made for testing of ammonia(NH3), Iron(Fe) and Manganese(Mn) removal from waste water. The properties of top and bottom layers are tabulated in Table 1 as both are loaded with silicic gravel.

Table 1.    Specification of 2 layers of TF.

SpecificationTop LayerBottom Layer
Length(L)70cm73 cm
Diameter(D)3.9mm1.9 mm
Specific Surface Area(A)13.85cm2/cm331.05 cm2/cm3
Porosity (Φ)0.380.39

The effectiveness of a TF has been tested at hydraulic loading of 226m3/m2 d. The feed amounts of iron, ammonia & manganese were manipulated in b/w 0.5 & 4, 0.5 and 3, as well as 0.5 and 1.3 ppm, separately. The scheme was inserted with a mixed culture and different experiments were made to know combination between iron, ammonia and manganese elimination when available all at once in the TF. An oxidation reduction potential enhanced in a filter (L) from 150 to 600 mili Volt, so making simultaneous removal of these pollutants in one stage. Ammonia and iron effected Manganese oxidation and Manganese was the rate limiting pollutant. This shows that the filter is a worthy reactor arrangement, as it provides concurrent biological oxidation & filtration by involving no outer air. In one case, filter medium of plastic material is used for nitrification. The results showed that this material is stable as well effective. At every condition, it provides excellent discharge. Also, the process is cost effective while comparing to other processes. Upon the completion of trickling filter process, clarification is not mandatory, making it easy to work and economical. The scheme of trickling filter relies on several factors like Temperature and carbon material filling.  Trickling filters are efficient in the removal of N2 at some extent because of their cost effectiveness and easy operations but there is an issue of clogging that makes the technique less preferable at large scale. Here are some manipulations in the scheme of trickling filters to make them more efficient. To have cost effective nitrification process by trickling filters then the rate of nitrification must be high that will help in reducing the equipment size.

After discussing Trickling Filters Studies For Waste Water Treatment Plants WWTP, Now, we will discuss the ways for Improvement in Trickling Filters with Merits and Demerits.

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