Trade Waste Interceptor Traps Quiz

What is trade waste?

• Industrial or commercial wastewater containing substances from manufacturing processes

• Water used for irrigation purposes

• Rainwater collected from rooftops

• Domestic wastewater from households

What is the minimum size for a grease trap?

• 50 litres

• 75 litres

• 100 litres

• 150 litres

What is the purpose of a neutralising interceptor trap?

• To separate oil from water

• To reduce the acidity or alkalinity of wastewater

• To cool down hot wastewater

• To remove solid waste from water

What is the function of a grease converter?

• To cool down hot wastewater

• To neutralize acidic wastewater

• To separate silt and mud from wastewater

• To trap oil and grease from business waste systems using an enzyme-based liquid

Which of the following is NOT a requirement for installing grease traps?

• Easy access for maintenance

• Installation of a heat trace wire

• Use of copper pipes for inlet and outlet

• Protection from vehicle damage

What is the purpose of a silt interceptor trap?

• To trap oil and grease from wastewater

• To cool down hot wastewater

• To prevent silt, mud, gravel, and similar debris from entering the wastewater system

• To neutralize alkaline wastewater

Which of the following is a common test for trade waste?

• pH testing

• Chlorine level testing

• Nitrate level testing

• Oxygen level testing

What is the main purpose of the New Zealand Building Code (NZBC) G14 Industrial Liquid Waste?

• To set standards for fire safety in buildings

• To provide guidelines for the installation of electrical systems

• To regulate the construction of residential buildings

• To provide specifications for systems used to collect, store, treat, and dispose of industrial liquid waste

Which of the following is a characteristic of conditionally acceptable trade waste?

• Contains liquids with temperatures exceeding 50°C

• Contains organo-chlorine pesticides

• Contains asbestos

• Contains harmful solids that combine with water to form a cemented mass

What is the function of an oil and grit interceptor trap?

• To trap grease from wastewater

• To neutralize acidic wastewater

• To cool down hot wastewater

• To separate oil and grit from wastewater