Tutorial 1: Question 1-3 by SITI NOR FARHANA BT ZAKARIA - https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h 1. The flow in sewer is generate by several types of wastewater source. In your own words, explain each type of the source and their collection systems. Also, suggest the suitable treatment for each of the wastewater. 2. List out (in diagram or chart) the physical, chemical and biological characteristic of domestic and industrial wastewater. Identify the common parameters use as quality indicator in water and wastewater treatment plant. 3. Explain the difference between infiltration and inflow and why infiltration rate for new sewer is expected to be lower than for old existing sewers. Explain and compare between the old and new sewer system. en-us 2023-01-16 08:00:03 UTC 2025-11-12 09:07:14 UTC hello@padlet.com https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445352357 Question 1

type of waste water source:
1.domestic sewage
-used water from houses
-common ways: 
i. physical water treatment: Processes like screening, sedimentation and skimming are used to remove the solids.
ii. biological water treatment: *refer to figure 1
iii. chemical water treatment: chlorination process to kill bacteria
iv. sludge treatment: solid-liquid separation process where the least possible residual moisture is required in the solid phase and the lowest possible solid particle residues are required in the separated liquid phase.

2.industrial sewage
-from manifacturing or chemical process
-treatment: activated sludge process:  
type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa

3. storm sewage
-runoff from precipitation
-stormwater treatment practices include source reduction, sand filters, and infiltration basins

https://v1.padlet.pics/1/image.webp?t=c_limit%2Cdpr_2%2Ch_140%2Cw_508&url=https%3A%2F%2Fpadlet-uploads.storage.googleapis.com%2F1936084221%2Fc2c54db2719676b79dbf0c29954abd37%2Fimage.png
]]> 2023-01-16 08:30:06 UTC https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445352357 https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445353526 Question 2

Physical Characteristics of Domestic Wastewater:

  • Color: typically clear to grayish
  • Odor: characteristic sewage smell
  • Temperature: varies depending on source, but typically between 20-25°C
  • Turbidity: low to moderate
  • Total suspended solids (TSS): low to moderate
  • Total dissolved solids (TDS): low to moderate

Chemical Characteristics of Domestic Wastewater:

  • pH: typically neutral (around 7)
  • Biochemical oxygen demand (BOD): low to moderate
  • Chemical oxygen demand (COD): low to moderate
  • Ammonia: low to moderate
  • Nitrogen: low to moderate
  • Phosphorus: low to moderate
  • Fecal coliform: moderate to high

Biological Characteristics of Domestic Wastewater:

  • Microorganisms: a wide variety, including bacteria, viruses, and parasites

Physical Characteristics of Industrial Wastewater:

  • Color: varies depending on the source, but can be highly variable
  • Odor: varies depending on the source, but can be highly variable
  • Temperature: varies depending on the source, but can be highly variable
  • Turbidity: varies depending on the source, but can be highly variable
  • Total suspended solids (TSS): varies depending on the source, but can be highly variable
  • Total dissolved solids (TDS): varies depending on the source, but can be highly variable

Chemical Characteristics of Industrial Wastewater:

  • pH: varies depending on the source, but can be highly variable
  • Biochemical oxygen demand (BOD): varies depending on the source, but can be highly variable
  • Chemical oxygen demand (COD): varies depending on the source, but can be highly variable
  • Ammonia: varies depending on the source, but can be highly variable
  • Nitrogen: varies depending on the source, but can be highly variable
  • Phosphorus: varies depending on the source, but can be highly variable
  • Fecal coliform: varies depending on the source, but can be highly variable

Biological Characteristics of Industrial Wastewater:

  • Microorganisms: varies depending on the source, but can be highly variable

Common Parameters used as Quality Indicator in Water and Wastewater Treatment Plants:

  • pH
  • BOD
  • COD
  • Ammonia
  • Nitrogen
  • Phosphorus
  • Fecal coliform
  • Total Suspended Solids (TSS)
  • Total Dissolved Solids (TDS)
  • Turbidity
  • Temperature
  • Microorganisms.
]]> 2023-01-16 08:31:26 UTC https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445353526 Question 3 https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445358821 Infiltration refers to the process by which water on the surface of the ground seeps into the ground and becomes part of the groundwater. Inflow, on the other hand, refers to the process by which water enters a drainage system, such as a sewer or stormwater system, from sources other than precipitation. This can include water from groundwater infiltration, surface runoff, and even illegal connections to the system

Why infiltration rate at new sewer is lower than existing, the diameter smaller than older.Thus amount of water enter is reduce. The sewer design has low cracking thus, amount if water enter the sewer from underground is decrease]]> 2023-01-16 08:37:22 UTC https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445358821 https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445376082 2023-01-16 08:54:10 UTC https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445376082 https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445381669 2023-01-16 08:59:48 UTC https://padlet.com/fuzzypartystores/g003vo7xlmm7mr0h/wish/2445381669