Answered: Calculate the ultimate BOD of a waste…

Calculate the ultimate BOD of a waste that has a measured BOD5 of 24.6 mg·L-1, assuming a BOD rate coefficient (k) of 0.13 day-1.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Collection Systems

The collection systems form a part of sanitary engineering, which is a sub-branch of civil engineering. It is also known as public health engineering and wastewater engineering. It is a methodology followed to remove and properly dispose of human waste, along with creating systems to provide safe and clean usable water. These measures ensure a hygienic and disease-free community. Sanitary engineering, apart from building sewer disposal units, is also involved in plumbing, fire protection, hydraulics, life safety, environmental protection, information technology, microbiology, pathology, and so on.

Question

Calculate the ultimate BOD of a waste that has a measured BOD5 of 24.6 mg·L-1,
assuming a BOD rate coefficient (k) of 0.13 day-1.

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1b The solid-waste composition and the quantity of solid waste generated from two cities located in the developing world are shown in Table Q1b as follows: Table Q1b. The solid-waste composition and the quantity of solid waste generated from two cities. Component City 1 City 2 Food waste (%) 47.0 65.0 Paper and cardboard (%) 6.5 7.5 Ash (%) 39.0 10.0 Other (%) 7.5 17.5 Waste generation rate(kg/person-day) 0.40 0.350
c) Complete the following Table Q2 (c) and calculate the moisture content of solid waste. Table Q2 (c) Compositions Wet percent (%) Moisture Dry Percent (%) 51 80 9 12 31 60 9 6 Food Plastics Rubber Miscellaneous
A truck dumped industrial waste into a pit. They found the truck 3 days ago with a pure pool of waste. Your lab finds the BOD5 of this waste to be 80 mg/L with a k=0.1/day. What was the waste source? Here are the 3 nearby suspects: Winery BOD ultimate = 275 mg/L Vinegar manufacturer BOD ultimate = 80 mg/L Pharmaceutical BOD ultimate = 200 mg/L
The City of Forty-Five (population 465,565) has requested your assistance in evaluating its solid waste collection system. Determine the mean time per collection stop plus the mean time to reach the next stop, the number of pickup locations per load, and the minimum number of trucks the city must own. The City of Forty-Five collection data are as follows: Average truck capacity = 12.5 m3; Average observed compaction ratio = 2.87 Crew size = 2; Number of pickups = 1 /wk (no rear-of-house service) Average number of cans per stop = 2.63/wk at 0.1136 m3/can Average number of residents per stop = 5 Average uncompacted density = 105.76 kg/m3 Average transport time to disposal site including delays and dumping = 1.78 h/trip Average number of trips to disposal site = 2/d; Rest breaks = 2 at 28.0 min Average maintenance downtime = 37.0 min/d; Average workday = 8.00 h Average percent of trucks out of service for major repairs = 15.0% Number of workday per week = 5
Assuming waste not recovered all goes to landfills. Determine the total landfill capacity consumed national wide each year. The specific weights of waste at landfill are as follows. Convert your answer to # of football stadiums filled. Area of football stadium = 1.75 x size of a standard football field Depth of filling = 30 ft Waste category Specific weight (kg/m³) Aluminum 2470 Steel and other metals 7100 Glass 2300 Paper and cardboard 570 Wood 450 All others ~700
A waste stream is discharging into a river at a rate of 5 m3/s. Upstream of where the waste stream enters the river, the river has a streamflow of 100 m3/s with a nitrate concentration of 1 mg/L. Downstream of where the waste stream enters, the nitrate concentration has been measured to be 3 mg/L. What is the nitrate concentration in the waste stream? Assume no change in storage in the system.
Assume that a material recovery facility has a conveyor belt (manual sorting unit) measuring 1,0 m width and an average belt speed of 18 m/min. Waste loading rate of the system is 12000 kg per hour and the average density of the waste on the conveyor belt is 80 kg/m3. Calculate the thickness of the waste on the conveyor belt and comment about this thickness.
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