Types of Mechanical Sewer Systems
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Class 1
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Class 1 mechanical sewage systems include sewage systems designed for the reception of human body wastes. It includes various kinds of toilets and privies. Specifically, Class 1 sewage systems would include a chemical toilet, an incinerating toilet, a self-contained portable toilet, a recirculating toilet, a portable privy, an earth pit privy, a pail privy, a privy vault and a composting toilet system. These systems must remain 10 to 30 meters away from areas containing potential drinking water that may be contaminated.
Class 2
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Class 2 categorization is reserved for mechanical sewage systems designed for the reception of sewage other than human body waste. An example of a Class 2 sewage system is a leaching pit. They are often combined with Class 1 sewage systems in cottage regions where water is hand-carried, serviced by a hand pump or serviced by a gravity-fed water system. Class 2 sewage systems are appropriate only for areas that experience low daily sewage flow. Like Class 1 sewage systems, they must be kept at a safe distance from protected areas that may be contaminated.
Class 3
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Class 3 sewage systems refer to systems managed by cesspools. A cesspool is a large tank used to dispose of sewage and waste that is between 2 and 3 meters in depth. Cesspools can fill up quickly. When this occurs, they must be emptied using a mechanical sewage pump.
Class 4
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Class 4 sewage systems refer to leaching bed systems combined with a treatment unit, such as a septic tank. When waste is deposited in the septic tank, the solid waste is allowed to settle before it is moved mechanically through pipes to the leaching bed.
Class 5
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Class 5 sewage systems refer to systems that use holding tanks to store waste at the site where it is produced. Waste is then hauled away periodically, usually by municipal organizations.
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