How to choose a fecal pump for a summer residence and an apartment: how it works and what to look at?

Residents of private houses and owners of cottages are rarely lucky with central communications. As a rule, they bring both water and sewage themselves, which means that one has to think how and with what help to remove sewage from the site. The cesspool machine is an expensive pleasure, especially since many private traders and organizations have switched to paying not for barrels, but for cubic meters pumped into it. And if the building is located far from the city, then it is completely difficult to get through the scavenger. Therefore, many owners get a good fecal pump with which they can pump out sewage into a drainage well, a sump or take it out of the city on a trailer of a walk-behind tractor in a large capacity.

We already wrote about the main groups of fecal pumps for cesspools and sewers in the article “How to choose a pump for pumping sewage: a complete classification and analysis of models". Therefore, we dwell on more subtle nuances of choice.

Selection of the unit for the apartment

In what cases put this installation?

Often young families begin a life together in dormitories, where the bathroom has several rooms, or even the entire floor. It is physically impossible to track who and what throws into the toilet or washbasin, and it is not customary to put a video camera in toilets. Therefore, sewage blockages in such buildings are commonplace. The same problem occurs in families with a large number of children. They accidentally can throw a sock in the toilet, a soft toy and wash it off while their parents are busy in another room.

If a lot of people use the bathroom, and the pipeline is old, then it is worth putting a fecal pump for grinding and forced withdrawal of effluents into a common riser

Rather than staying for a week or two without the usual amenities and removing the effects of a sewer flood, it is better for all tenants to pack up and buy a surface-type fecal pump for the toilet. It is placed behind the toilet and equipped with a grinder, which will grind all the solid particles that have fallen into the pipe.

The principle of operation of the device

But here a logical question arises: why do we need a pump, if you can just put a separate chopper, which, of course, will be cheaper. In old buildings, and especially hostels, pipelines were made of metal, and during the long term of operation they managed to grow hard layers inside. Pure water also moves along them slowly, and in the presence of feces, albeit crushed, the speed of movement slows down.

In addition, it happens that the central riser is located far enough, and during repairs they laid new pipes and violated the angle of inclination. Why water began to move poorly by gravity.In this case, the installation of a separate grinder will reduce the likelihood of clogging, but will not improve the rate of effluent discharge. A slow stack in the toilet is not a very pleasant sight.

In such situations, it is better to buy a pump with an integrated grinder, thus solving the problem comprehensively. This unit is a storage tank, inside of which is a pump and a cutting device. When draining from the toilet, drains enter the tank, and the automation starts the grinding mechanism. After a couple of seconds, the pump is connected and discharges the crushed particles and water into the pipeline, as if pushing to the riser.

Where is better to put and which model?

Models with a grinder exist in two versions: for cold drains (up to 40 °) and hot (up to 95 °). If you have a combined bathroom, where a shower, bath and toilet go into the common pipe, then buy a model for hot drains. In a separate bathroom and toilet, it is better to install two pumps: one for cold drains with a grinder behind the toilet, and the second for hot drains in the shower.

By the way, in the bathroom you can do without a grinder, as the drain hole is protected by a grill from ingress of large particles, and the standard model of the pump will freely skip small ones.

Option # 2 - units for private houses and summer cottages

Methods of application at the cottage

In a private house (or cottage), fecal pumps are selected a little differently. The main advantage of these systems is that they are not afraid of grains of sand, pebbles and all kinds of solid debris that can disable a good drainage unit. And on the site not only sewage is pumped out. There it is necessary to service storm drains, eliminate spring floods in the basements, water the garden, drain the pool for the winter ...

Pumping a septic tank is only one of the many possibilities of a fecal pump that can water a garden, eliminate flooding and clean the foundation pit from rain

In order not to purchase a separate unit for each problem, it is easier to buy one fecal pump. He pumps any water: clean, dirty, clogged with sand, household waste, sludge, etc. Of course, for drinking water (from a well) it does not need to be used for hygienic reasons, but all domestic needs associated with pumping and supplying household water will be solved .

If you choose the most universal model, then it must certainly be equipped with a grinder. This means that semi-submersible systems should not even be considered, since they are rarely created with a cutting mechanism.

The shape of the cutting mechanism can be different, but the choppers in the form of knives chop the solid particles better and last longer than the cutting edge of the impeller

Comparison of submersible and surface pumps

Deep models are most often equipped with grinders, because they will be located directly inside the drains and, when sucked near the inlet, they can crush any garbage. For surface models, only the hose is inside the drains, and the equipment itself is standing near the cesspool. Accordingly, the garbage must first fly along the entire length of the hose, and only then it will be crushed at the inlet to the pump. Naturally, the first option is more practical, since the hoses will not clog.

Surface fecal pumps are always sold without choppers. This item is placed only at the request of the client and for an additional price

If we compare the installation complexity, then surface pumps are easier to connect and easier to dismantle: sewage was pumped out, the hose was pulled out, washed and hid for storage. The submersible pump must be lowered on cables, fixed on metal fittings, and during dismantling it will have to be washed completely, and this is not a very pleasant procedure. But during operation, this unit will not be heard by anyone, and the external pump is noisy and can attract the attention of neighbors.

To install a submersible fecal pump at the bottom of the cesspool, you need to stock up with strong cables and consider the mechanism for lifting the unit to the surface for maintenance

If the pump will work from above, then naturally, they will not waterproof it at the plant. Therefore, precipitation, fog, etc., are contraindicated for such a device. In addition, when pumping effluents in winter, there is a chance of freezing moisture inside if there is severe frost on the street. This may cause equipment damage. So for a house with permanent residence, the outdoor option is not too convenient. But in the country, where they live only in the summer, he will become an indispensable assistant. In the fall, the owners completely deflate the sump - and hide the system in the house until next season.

Submersible pumps in terms of waterproofing and resistance to aggressive environments beyond competition. They are designed for 10 years or more of uninterrupted operation in the conditions of sewage without dismantling. Those. You can buy such a unit purely for sewage, immerse it in a cesspool, connect it and ... forget it. Automation will work as soon as the level of drains rises above a critical level, and turns off when everything is pumped out. But in this case, you must have a system of sedimentation tanks in which the pump will supply sewage. If you simply throw the hose off-site into the gutter by the road or the nearest forest, the “warm-hearted” neighbors will tell you right away about your “exploits”.

Installation of a submersible pump for permanent residence in a cesspool differs from mobile installation, since the unit must be firmly fixed at the bottom

The weakness of the deep models is the complexity of their dismantling. If they pump out everything that is on the site (ponds, sumps, water the garden, etc.), then you will have to wash the body thoroughly and dry it each time. Despite the fact that such systems are created from heavy-duty cast iron, stainless steel or plastic, they must be looked after, like any household appliance.

The life of the device directly depends on the power of the device. If you use the pump all year round and pump out monthly, then surface systems for this mission will not work. They have weak engines, so hoses no more than 7 meters are used for pumping. Submersible manufactured byknowledgeoh power. Maximum - up to 40 kW. Their strength is enough to raise highly contaminated liquid to a height of about 20 meters, i.e. for deep cesspools only they are suitable.

When selecting a specific model of the fecal pump, the height by which the drains will need to be raised, and the dimensions of the outer hose are calculated

To calculate the approximate pump capacity for your needs, you need to figure out what is the maximum depth of your cesspool and the distance to the place where you will drain the sewage.

For example, your septic tank has a depth of 8 meters, and the outlet hose is needed at 30 meters. We carry out the calculations according to the following formula: (depth + hose length) / 10; those. 8 + 30:10 = 11 meters. So, buy a pump that is able to raise drains to a height of at least 11 meters. Ideally - 12-13 meters. A small power reserve will allow the system to work without tension.

And the last nuance: choose fecal pumps of well-known companies such as SFA, Grundfos, Sprut, Gileks, etc. They specialize in pumping equipment, and it will be easier to find some part in case of breakdown. And such models are more readily taken for repairs.