Hotel Service Unit 13 Q5 Quiz

Correct Answer:
B) To allow the exit of concentrated brine, which is removed as waste

Explanation:
The brine channel provides an outlet for the concentrated waste that contains retained salts and impurities, helping maintain membrane efficiency.

Correct Answer:
B) To collect the permeate and transfer it to the product tank

Explanation:
The permeate tube is located at the center of the spiral, collecting purified water that has passed through the membrane and channeling it to the product tank.

Correct Answer:
B) Permeate channel spacer

Explanation:
The permeate channel spacer allows purified water to flow toward the central collection tube, ensuring efficient transfer of the permeate to the product tank.

Correct Answer:
C) Fiberglass or other strong polymer material

Explanation:
The outer wrap is often made from durable materials like fiberglass to protect the membrane layers from physical damage and maintain the structural integrity of the module.

Correct Answer:
B) To separate water from dissolved salts and impurities through a semi-permeable barrier

Explanation:
The spirally wound membrane is designed to allow water molecules to pass through while retaining dissolved salts and impurities, thus producing purified permeate.

Correct Answer:
C) Semi-permeable membrane layer

Explanation:
The semi-permeable membrane layer allows water molecules to pass through while blocking salts and other contaminants, achieving the desired level of filtration in reverse osmosis.

Correct Answer:
B) From the side of the membrane module, moving parallel to the spiral layers

Explanation:
Feedwater flows parallel to the spiral layers, with the membrane allowing purified water to pass while retaining contaminants in the feed stream, which exits as concentrate.

Correct Answer:
B) To create space between membrane layers, promoting even flow and preventing blockages

Explanation:
The feed spacer maintains separation between the membrane sheets, ensuring even water flow and reducing the risk of fouling or blockage within the membrane module.