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Faecal sludge deposited into the pit latrine is subject to biodegradation. The aim of this research was to develop model for the filling rate of faeces in ordinary pit latrine together with the effect of shape factor on such fillings to prepare the minds of users on the filling characteristics of the pit based on contents, usage and environmental factors. Consequently, faecal sludges sampled from 100 pits already filled were subjected to laboratory analyses for their physico-chemical and biological characteristics. Models for the actual filling rate of faeces in ordinary pit latrines were derived using BOD, COD, VS, and TS data, calibrated and verified. For a more critical situation, models were also derived for the filling rates considering pit shapes that gave the actual pit filling in comparison with the general condition. From the results, the actual filling rate was lower than those obtained using BOD, VS and TS. However, the COD gave filling rate closer to the actual filling rate than other parameters since TS could not be used to assess the filling rate of faeces in pit latrines. The pits exhibited low filling rate in terms of BOD in 2 pits. In terms of COD, the filling rate was higher compared with that of BOD. Low filling rate was observed with volatile solids and only 3 pits exhibited moderately high filling rates whereas total solids had the highest number of pits with high filling rates. The filling rates for both the square and rectangular pits increased by 26.5% from 40 – 90 ℓ/capita/year to 50 – 112 ℓ/capita/year due to the shape factor and this was above the values obtained in existing models while that of the circular pit remained the same. Reduction in pit volume and increase in filling rate by faeces was due to dead corners as a result of clogging, thereby reducing the area available for faecal infiltration into the surrounding soil. Circular pits are more stable because of the natural arching effect of the ground around the hole and there are no corners to concentrate the stresses. Pits with flat sides are much more likely to develop clogging resulting to dead corners than the circular pit. From this study, it is therefore evident that the shape of pit latrine determines the actual volume and the filling rate of faeces in pit latrine taking into consideration geological and environmental factors. Thus for optimal design, our engineers should take note of the pit shape factor. Thus, the model can be used to determine the filling rate of ordinary pit latrines considering soil characteristics, ground conditions and other favourable conditions.&nbsp

Farmers are using chemical fertilizer for farming to extend the yield of crops. Chemical fertilizer reduces soils fertility and it also contaminate ground water table..Recycling of biowaste is necessary to reduces waste .It makes our campus clean likewise as contribute in sustainable development. This waste are often converted into useful fertilizer as a Vermicompost.Vermicompost will enrich the soil and its fertility. Vermicompost also results in decrease the environmental problems. Vermicompost could be a vital biofertilizer and Vermicompost is enriched with all beneficial soil bacteria and also contains many of the essential plant nutrients like N, P, K and micronutrients.(1) Vermicomposting is that the process of production of compost by breeding earthworms, leading to homogeneous and stabilized humus used as manure and significantly increased the quantity of N, P, K and C concentration in vermicompost. The aim of this paper to recycle biowaste and study various physicochemical property of soil and impact of vermicompost fertilizer on soils property of Aheri, Nagpur . The observed values of various physicochemical parameter in all soil samples, after addition of vemicompost is fairly good.