6 Types of Sewage Systems
Some homeowners do not pay much attention to the underground sewer system and just take note of the visible plumbing fixtures such as the toilets and taps. However, sewer systems should not be entirely disregarded since they essentially steer clear the grey water and sewage wastes away from your household. They also keep off the atrocious sewage stench from spreading into your home. There are different kinds of sewer systems with varying features and mechanisms in managing sewage. Sewer lines are usually composed of sewer outlets, pumps and the wastes discharged by the houses and buildings in a particular area. Know more about the common types of sewage systems below:
This type of sewer system has the conventional sewer piping design where the smaller pipes are positioned to observe a minimal downward slope. It does not require heavy proportions of digging since it is situated at a shallower depth.
A simplified sewer system is more of a budget sewer system since it costs lesser compared to other sewer types. Likewise, its running costs are also affordable, effectively saving money. Simplified sewer systems, which are usually made up of locally acquired components, can easily be installed and repaired. Moreover, branching out an existing simplified sewer is also uncomplicated.
Needless to say, a simplified sewer also has its set of drawbacks. It needs to be put up by septic specialists, consumes a lot of water during its flushing activity, and requires frequent cleaning and repairs to maintain its optimum operation.
A separate sewer is primarily designed to manage stormwater and wastewater. It is composed the sanitary sewer which gets a hold of household liquid wastes, and the stormwater sewer which collects stormwater. It has lower chances of sewage overflow, making it its hygienic features far safer compared to combined sewer systems. You also need not to worry about health and sanitary concerns such as mosquito breeding and sewer odour. Separate sewers can be extremely difficult to put up in overcrowded areas. Although the running expenses of separate sewers are somewhat cheaper than combined sewers, their upfront and maintenance costs will cost you a fortune.
A combined sewer is typically installed in urban locations. It combines all the wastes from the pipelines such as the wastewater, sewage, and stormwater into a single compact area. Since it neither makes use of pre-treatment nor any kind of water storage, the wastewater is directly transported to the treatment facility. A combined sewer is designed with a downhill gradient so that there will be a continuous flow of wastewater and to prevent stagnated sewage in the pipes. This can effectively preserve the balance of our ecosystem and guarantees that the sewage will not resurface, causing health hazards.
A combined sewer system is among the safest and most convenient sewer technology out there. However, it has substantial maintenance costs and requires the hiring of professionals for its repair and maintenance. It also needs recurrent treatment.
Solid sewer systems are usually put up in urban settings where the room for a sewer system is likely very limited. Unlike the liquid waste system, solid sewers have chambers to collect the solid particles removed from the passageway before they even enter the system. This chamber is also responsible for maintaining the tidiness and efficiency of the system.
Vacuum sewers transport wastewater flow through negative pressure. This is highly adaptable to places where there is minimal gravity that can be obtained to displace the wastewater in the sewer system. The water is centralised to one sewer pipe and only runs if a certain level of gravity is reached. Soon after, a suction is made to transfer the water into the main channel.
This system ultimately uses pressure to transport the wastewater rather than the enforced gravity due to the gentle sloping of the pipe layout. To facilitate this process, pump installations are required. The effluents are settled before they are transferred into the pump system. However, most homeowners do not opt for pressurised sewers since they have an upscale installation cost.