Why do we need a sewage pumping station at all?
Most of the contemporary and built housing estates have a gravitational sewage acceptance network. This is the simplest, most convenient and cheapest form of sewage transmission in the collective sewage system. Often, however, it happens that the terrain limits the free rafting and to press sewage over long distances or uphill we need to use pumping stations called sewage pumping stations. They are designed to collect flowing sewage and press them cyclically further with pipelines towards the sewage treatment plant. Thanks to this, sewage does not lie in the tanks for a long time, do not knead and the biological and chemical processes occurring in sewage are limited to a minimum.
What are the types of sewage pumping station?
Generally speaking, there are more divisions of the pumping station than their producers, but for simplicity they are divided due to: the size and importance of social and the form of buildings.
Division due to size and meaning:
- Housing pumping stations - usually covering single -family houses, workshops, summer houses, sometimes collecting sewage from several neighbors. Low social significance.
- District pumping stations - collecting sewage from several or several houses, tenement houses, small companies and public utilities. Average social significance.
- Municipal pumping stations - also called network, responsible for collecting and pressing sewage from large housing estates and plants, towns, and picking sewage from other smaller or more distant pumping stations. Very socially important.
- Rainy pumping stations - this is a specific type of sewage pumping stations, because according to the regulations rainwater is sewage, but usually not subject to wastewater treatment. Social significance proportional to the size of the pumping station.
Division due to the construction:
- Internal - usually home and housing estate placed in basements, garages and premises located below the level of gravitational drainage
- External - all previously mentioned types located outside buildings, in green or communication sequence.
Internal pumping station and an outdoor pumping station
What sewage pumping station home?
Household sewage pumping stations are usually small stations collecting sewage from the household and pouring into the distant collective (network) sewage system. Depending on the number of users and the load of the pumping station, we choose the size of the tank, and depending on the parameters of the discharge pipeline, we select the pump parameters. Control is a matter of comfort of use and functions to protect the pump and user against the consequences of failure.
- Tank location
When deciding on a pumping station, you should decide whether it is to be placed inside the building, e.g. in a basement or garage or the building level is high enough that it can be placed outside the building, e.g. in the garden. Internal pumping stations usually have smaller capacity of type 50, 100, 200 or 500 liters, and the external pumping stations are actually only from 500-600 liters. That is why it is worth determining how many sewage per day we intend to press.
- Number of users
The number of users and connected households is a very important issue. It is easier to control the "sewage culture", i.e. the content of garbage in sewage at home one family than in a tenement house or service premises. With a comparable number of people in facilities, there is a less chance in a single -family house to drain three two hundred water bathtubs at the same time than in the case of a tenement house or several houses. We care about clogging toilets in our own home, differently in clubs or public places. Unfortunately, this is unpleasant statistics.
- Pump and discharge pipeline
The pump, the heart of the pumping station, which must meet the amounts of flowing sewage and keep up with pouring into the pickup punk. Sometimes it is a 1-2 meter lift so that they flow further gravitational and sometimes hundreds of meters with pressure pipelines and in addition still uphill. Each pump has its range of minimum and maximum pressure and performance. Therefore, the hydraulic characteristics of the pumps and the curing of the pipeline are very important when determining the pump working point. The high performance pump will not necessarily work on narrow long pipelines, and the high pressure pump may not keep up with pumping a large amount of wastewater. Therefore, the most important is the correct selection.
- Control
The simpler the better, but not in this case. The control is intended to control the pump operation and, if possible, provide the user with the information necessary. Feedback about the incorrect operation of the pump and pumping station can protect us from the unpleasant effects of the pump failure and e.g. flooding the room of the pumping station or the sewage burst in the building. It is important to protect the pump against short circuit, blocking, overloading, etc. For this is used by motor switches in control wardrobes. It is good to have a notification with exceeded alarm level in the tank to avoid flooding. For some, a flashing or rolling cock on the control automation is enough, and for others the standard will be SMS with the content of, for example, "pump failure". On this element of the pumping station I do not recommend saving.
- Equipment
A household pumping station does not have to be complicated, but it must have a minimum necessary to ensure user safety and comfort. Behind the pump, there must be a bullet valve (necessarily ball), which protects against the return flow of already pumped sewage. Otherwise, we will pump the same portion of sewage all the time, and after turning off the pump they will come back. Before departing from the pumping station, there must be a valve or a shutting back, in the event of a pump failure and/or clogging of the fire valve damage. Manually closing the return of sewage will protect us from flooding from the discharge pipeline. The discharge department cannot be narrower than the flight through the pump, so that the solid fractions that they do not clog the discharge pipes in the tank or behind it. The coupling foot, often disregarded equipment, especially by "economical", is appreciated when you need to quickly remove the pump for review or failure and the tank is flooded under the lid and you can't see anything in it. With the foot we are always sure that the pump is in the right place, there is no case, aiming, looking into the "water" mirror. Congress of the pump after the guides (preferably two) and we have peace of mind. It is also worth recalling that the shut -off valve handle should be placed close to the hatch to quickly cut off the discharge, because diving in the septic tank with the septic tank is not pleased.
Summary of the selection of the pumping station
When deciding on a pumping station, let's go to an authorized store or manufacturer, seek the advice of experienced people from the industry. Let's avoid cheap internet solutions, because we will bear the effects ourselves. Let's check what and how long it is in the scope of the guarantee. Does the seller know the product that offers, or is just an intermediary who will wash his hands when something goes wrong. Will the solutions used in the pumping station be repaired after the warranty, can the pump be turned into another, are the components and will be available or easily converted? A good quality pumping station will serve for many years, and properly serviced will not be a burdensome piggy bank for the owner.