internal sewage system
internal drainage - pipeline depressurized (if you do not use special pumps for pumping force), outlet drains from the baths, toilets, sinks, etc.in a special holding tank, sewage treatment plant or to a central sewer system.Drains are removed in this case, gravity and naturally, it is necessary to choose the pipe with a sufficiently large diameter of 40-50 mm for sanitary sewage and 100 mm for fecal waste.It should also have to withstand the slope - 2-4%.It is clear that it is necessary to choose the pipe diameter and properly laid, otherwise sewage will bring you a lot of trouble: blockages, unpleasant odors, flooding.
tubes (usually) polymeric materials are used: PVC, polypropylene, polyethylene, etc.they are easy to install, durable, they are characterized by high chemical resistance.In domestic sewage are still elements of the strapping: taps, siphons, different tees (for ease of placement), ventilation valves, check valves, valves (to prevent flooding), and others.
extraction of the riser should be withdrawn above the roof of the building.This ensures the stability of the hydraulic valves and plumbing does not allow foreign odors and "wheezing" in siphons, thanks to good air exchange.Another option - the use of reverse ventilation dampers.
spring, when raising the level of ground water, quite often the owners of houses are facing flooding in basements and even on the first floor, but that did not happen, it is necessary to establish protective mechanisms.With local protection using check valves matched the diameter of the pipe - a locking mechanism is a ball (plastic), which overlaps the pipeline, with an increase in the level of ground water.For the line (for a total protection) are closures, with two (or one) of the plates "stainless steel", they are free to skip to the point of waste water discharge, but propped up with water in the event of backflow and block the water way into the room.By the way, such "protection" helps prevent access to rodents, which often make their way into the house of sewer pipes.
We mentioned special pumps (for the forced evacuation sinks), which are increasingly used in the device drain.Let us see why?
- First: there is no need to pump sewage from basements and garages, if they are below the level of sanitation.
- Second, because of the complex and extensive pipeline system is impossible to delete a gravity sewage from separate sanitary facilities.As often happens with reconstruction of old buildings, which previously were not provided all the comforts of home.
- Third: the elimination of the existing sewerage system in the design errors (constant blockages and odors).
Currently, no problem you can buy small-sized pumping units.It is a plastic tank equipped with a built-in pump (submersible).To control the water level and automatically start the pumps used hydrodynamic relay, pressure nozzles equipped with check valves and adapters.The motor is provided with a thermal protection system and ventilation occurs through a hole provided with a filter.
The principle is simple: as soon as the runoff ends up in the pump, it automatically turns on and pumps them (under pressure) in the septic tank, sewer or sewage treatment plant.Many designs are equipped with a special grinder (grinder) and sinks pre pass through it, before getting into a septic tank.With these pumps can use smaller diameter tubes of 18-40 mm.