At a municipal waste handling facility, 30 metric ton mixture of food waste, yard waste, and paper waste was available. The moisture content of this mixture was found to be 10%. The ideal moisture content for composting this mixture is 50%. The amount of water to be added to this mixture to bring its moisture content to the ideal condition is metric ton. (in integer)

At a municipal waste handling facility, 30 metric ton mixture of food waste, yard waste, and paper waste was available. The moisture content of this mixture was found to be 10%. The ideal moisture content for composting this mixture is 50%. The amount of water to be added to this mixture to bring its moisture content to the ideal condition is metric ton. (in integer)

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter2: Municipal Solid Waste Characteristics And Quantities

Section: Chapter Questions

Problem 2.15P

See similar textbooks

Similar questions

Assume a rough estimate of MSW composition is 60 % of paper (assume cellulose, C6H10O5, moisture content 6%) and 40% food waste (assume sugar, C6H12O6, moisture content 70%). Estimate the HHV using both ultimate analysis and compositional analysis.
The results of a jar test on a surface water supply sample revealed that the optimum dose of alum (Al2(SO4)3.14H2O) as coagulant is 17 mg/L. Furthermore, the water has total alkalinity = 50 mg/L as CaCO3; pH = 7.8; and residual turbidity at optimum alum dose = 4 NTU. The water treatment plant has a mean flow of 10m3/hour. Determine: The kg of alum per year needed in the operation of the plant. The residual alkalinity in the sample, following the addition of alum at optimum dose. Solve parts (a) and (b) if instead of alum, ferric chloride (FeCl3) were used as coagulant. Assume the numerical jar test results are the same as those with alum.
A sample of refuse has a moisture content of 20%. A 1.2 g sample is placed in a calorimeter, and a gross calorific value of 14,400 kJ/kg is measured based on the temperature rise. Further analysis shows that .3 g of ash remains in the bomb calorimeter after combustion. Calculate the HHV in terms of (a) moisture-free and (b) moisture- and ash-free
1) a)Calculate f and L of a rotary dryer for a kaolin plant to dry 20 tph pressure filtered kaolin containing 22% H2O. Dry kaolin moisture content must not be more than 5% H2O. b)Estimate the energy consumption as kWh and its cost (1 kWh = 14 ¢)
A lime-soda softening plant treats a flow of 150 MGD, and the water has a hardness of 225 mg/ℓ as CaCO3, an alkalinity of 178 mg/ℓ as CaCO3, a Mg+2 ion content of 39 mg/ℓ, and 4 mg/ℓ of CO2. The commercial grade of quicklime has a purity of 85%, and the soda ash has a purity of 95%. Determine a. The pounds of quicklime and soda ash required per million gallons. b. The tons of quicklime and soda ash required per month if a month is considered to be 30 days.
A plant treating 189.25 MLD of water is using 50 mg/L of alum [Al(SO,)3-14.3H;0] as a coagulant. The water contains a natural alkalinity of 30 mg/L as 3Ca(HCO;)2. Compute the number of pounds of lime as CaO required per day.
Hydr. Cycle.
Derive the CO2emission factor for the coal.
Some waste has a five-day BOD at 20 ̊C equal to 210 mg/L and an ultimate BOD of 350 mg/L. Find the five-day BOD at 25 ̊C. Note, reaction rate coefficients can be adjusted for temperature using the Arrhenius equation, which is kT2 = kT1h^(T2-T1), where h is 1.047 typically.
MPN of effluent is 106/100 ml and it reduces to 102/100 ml after chlorination. Find percentage removal (%R) and log removal (logR) of MPN.
the combined volume of waste water from the process and wash, and cooling and sanitary waste from an industry is reduced by
Problem 4In water and wastewater treatment processes a filtration device may be used to remove water from the sludgeformed by a precipitation reaction. The initial concentration of sludge from a softening reaction is 20,000 mg/Land the volume of sludge is 100 m3. After filtration the sludge solids concentration is 350,000 mg/L. Assume thatthe sludge does not change density during filtration, and there is no accumulation of sludge in the filtrationdevice. Using the mass balance method, determine the volume of sludge after filtration.