Concept explainers
Interpretation:
The quality of the water produced from the sewage treatment process matched the quality of the water in our current drinking water system. Whether the treated sewage water can be accepted as drinking water or not has to be found and commented on either way.
Concept Introduction:
Water pollution: It can be defined as alternation in physical, chemical and biological characteristics of water through natural or human activities and making it unsuitable for its designated use.
Water treatment: when effluent discharged into a river body such as lake, river or sea a number of process occur like physical, chemical and biological characteristics of water change which causes loss of organism.
The extent of damage depend upon type of pollutant present in effluent, non-bio degradable pollutant like mercury are most deadly as they accumulate in aquatic organism which lead to bio magnifications.
Want to see the full answer?
Check out a sample textbook solutionChapter 8 Solutions
Chemistry In Context
- Write your complete solutions on yellow paper, round your answers to the appropriate number of significant figures, and box the final answer. The deadline for submission is at the end of the class. Note: You do not need to write your solutions for the items that can be derived from your calculators. 1. Three students (Saerom, Hayoung, and Jiwon) are asked to determine the ppm Ca in a drinking water sample by titration with EDTA. Each student performed five trials for the sample. The results in ppm Ca are the following: Saerom Hayoung Jiwon a. Get the mean, SD, and % RSD of each student's results. b. If the true value is 35 ppm, calculate the relative error of each student's results. c. Comment on the precision and accuracy of each student's results. The maximum % RSD and the relative error set by the lab is 5.0%. d. Use the following table to summarize your answers. Mean SD %RSD Relative Error Comment 31, 32, 33, 33, 32 35, 34, 34, 35, 34 35, 38, 33, 35, 37 Saerom Mean SD 95% CI…arrow_forward(SHOW CALCULATIONS) The Environmental Protection Agency sets limits for copper in drinking water at 1.3 ppm by mass. Find this concentration in Molarity. (molar mass of copper = 63.546 g/mol; assume density = 1.00 g/mL).arrow_forwardWhat are the concentrations of chemicals interest to water treatment and potable water supply systems and determine if they are present in the raw and treated water?arrow_forward
- 60 08 Zoom Add Slide Play Table Chart Text Shape Media Comment Background In 2014, the city of Flint, Michigan, began taking its municipal water from the Flint River and treating it at the city's own water treatment plant, in order to save money. By 2015, reports surfaced of high lead levels in Flint city water. High lead levels in municipal water can have devastating health ramifications for a city's population, since lead is a neurotoxin that is particular dangerous for developing brains. After Flint began treating its own water, the percentage of children with elevated blood levels increased from 2.4% from 4.9%. Flint's water crisis was caused by the failure to adequately control corrosion of the lead and iron pipes that distribute water throughout the city, allowing rust and lead to taint the city's water supply. The increased corrosiveness of the Flint-treated water was due to several factors. We will look at just one of those factors in this activity: Failure to treat the lead…arrow_forwardA cough syrup, which comes in a concentrated syrup, contains red dye #40.The red dye #40 syrup is diluted three consecutive times by a factor of 2 Match the dilution with the correct solution shown in the image. Water, undiluted syrup, dilution 1, dilution 2, dilution 3. If the concentration of red dye #40 in the original syrup is 4.68 x 10-3 M, what is its concentration in dilution #3?arrow_forwardList and describe the two main methods of seawater desalination.arrow_forward
- A tank initially contains 200 liters of fresh water. Brine containing 2.5 N/liter of dissolved salt runs into the tank at the rate of 8 liters/min and the mixture kept uniform by stirring runs out at the same rate. After 15 minutes, what is the concentrations of the salt in the mixture? 1.1 N/L 1.8 N/L 2.1 N/L 0.82 N/Larrow_forwardChoose which waste disposal container you should dispose of the unused 0.1 M FeClz solution. A organic waste (B) alkali waste inorganic waste acid wastearrow_forwardWhich of the following treatments will be the most effective way to decontaminate the water of Ferrisville? Hypothesis 1: Install smaller filters to reduce the amount of iron that goes through. Hypothesis 2: Add sodium phosphate to stop chlorine from corroding pipes. Hypothesis 3: Add more chlorine so that chlorine is in excess in the reaction.arrow_forward
- What is the purpose of environmental remediation? to restore water to its original purity levels to make the most of currently used technologies and resources to remove pollution or contamination from the environment to reuse materials that would otherwise go to wastearrow_forwardMore than 40% of the world's population has limited access to clean water. One proposed method for the production of clean water involves removing salt from seawater. Which technique would be used to separate the salt from the saltwater mixture?arrow_forwardIs water available in ethanol?arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning