Not every house can be connected to the sewage system, which is often a big problem – what to do with the waste? Until recently the most popular solution was the septic tank, which has recently been losing popularity in favour of domestic sewage treatment plants.
What is domestic sewage treatment plant?
Household sewage treatment plant is an alternative to septic tank and sewage system. This form of sewage disposal is best suited for large plots, because it takes up a lot of space and during its installation distances must be kept from:
plot boundary 2 m,
wells 15 m,
telecommunication cables 1 m,
electric cables 0.8 m,
water mains and gas lines 1.5 m
road 2 m,
water reservoirs 15 m,
from bushes and fruit trees 3 m,
from windows and external doors of a residential building 5 m.
Photo by kwangmoop from Freepik.com
Types of sewage treatment plants
There are different types of sewage treatment plants, depending on the sewage treatment method:
drainage and infiltration,
with sand filter,
ground and plant-based
with active sludge,
with biological deposit.
Household sewage treatment plants in light of the law
Act of 7 July 1994. – Construction Law, Journal of Laws of 2019, item 1186 as amended, article 29, section 1, point 3, article 30, section 1, point 1 specifies that a domestic sewage treatment plant with a capacity of up to 7.5m3/day requires only a notification at the appropriate city office or county district office. If the throughput exceeds 7.5m3/day, then a construction permit is required.
Water permit
Domestic treatment plants with a capacity of up to 5m3/day do not require a water permit to discharge wastewater into water or soil
If the capacity of a domestic sewage treatment plant exceeds 5m3/day, then a permit is required for the construction of the water facility and for the discharge of sewage into water or onto land – regardless of where it is discharged.
If the wastewater is discharged into the ground, waters or devices that are not owned by the investor, then a water permit is required regardless of the capacity of the treatment plant – Act of 20 July 2017. – Water Law, Dz.U. of 2020 item 284.
>> See also: What does the construction of a domestic septic tank entail?
Advantages of a domestic sewage treatment plant
Domestic sewage treatment plant has many advantages:
high savings – the costs of sewage treatment plant pay for itself already after 3 years of use. In the following years the cost is similar to that of a septic tank;
ease of use – the only thing you need to provide to the sewer system are special bacteria and enzymes, as well as periodical removal of sludge;
ecology – when using such a wastewater treatment plant, you can be sure that the wastewater does not pollute the soil
versatility – it can be used regardless of the terrain and soil type. Household sewage treatment plants do not need to be insulated – they work flawlessly regardless of weather conditions.
durability – tanks are manufactured in such a way that atmospheric factors do not have a negative impact on their operation. Most tanks have a two-year warranty;
receiving a partial refund of costs – the amount of funding is up to 80% of the investment;
no unpleasant odours –no unpleasant odours escape from the household treatment plant. There is also no possibility of overfilling, as in the case of a septic tank.
Disadvantages of household sewage treatment plant
Domestic sewage treatment plant has also some disadvantages, these are:
price– the cost of building a domestic sewage treatment plant ranges from 6 to 20 thousand PLN;
the need to periodically add bacteria and clean the tank – for some users this can be inconvenient;
space– the treatment plant can only be built on a large plot of land where it will be possible to keep the distance;
>> Read also: Material and capacity of the septic tank – how to choose the right one?
Cost of construction and operation of domestic sewage treatment plant
Total cost of construction (material and labor) of domestic sewage treatment plant for a house with maximum 5 residents, depending on the type of treatment plant, is
with an infiltration drain: pLN 6 000 – 8 500,
hydrobotanic: 12 000 – 18 000 PLN,
biological bed: pLN 6,500 – 22,000,
with active sludge: pLN 11,000 – 18,600.
The cost of operation is 170 – 200 zł/year. This price includes:
the cost of removing sediment from the clay settling tank,
Choosing the right windows is quite a challenge. On the market you can find many models made of different materials
In connection with this in recent years more and more popular began to enjoy the wooden windows, but this does not mean, however, that those made of PVC went completely away. They still have many advantages which speak for their purchase and installation. What are they? Here we discuss them
Why are PVC windows the most popular choice?
The popularity and ubiquity of PVC windows results first of all from their relatively low price - in comparison with other materials. At the same time they still provide very good parameters, for example those related to thermal insulation or soundproofing. In addition they look good regardless of the architectural style in which the building was constructed and are available in many colors to choose from to make it easier to match them in terms of style to the facade of the building or its surroundings. That's why they still haven't fallen out of the market in spite of high competition from wooden windows.
4 main advantages of PVC windows
The above mentioned advantages of PVC windows are not the only ones. Apart from that you can also enumerate their four most important features, which speak for the purchase of just such models
High resistance
PVC windows are extremely resistant to various atmospheric factors. They are not destroyed under the influence of high and low temperatures or intense sunlight falling directly on their surface. Additionally, thanks to the fact that the material from which they are made does not absorb moisture, they are also resistant to mould and mildew and prevent the development of insects
Long lasting durability
Another advantage of PVC windows is their durability, which can be up to 50 years, thanks to which replacing windows with just such models can solve the problem associated with this element of the building structure for the entire generation of the family
Excellent tightness
In addition, PVC windows are also characterized by excellent acoustic insulation, or the ability to suppress sounds from outside the building. Therefore, they are recommended for installation in particular where there are busy traffic routes behind the window, playgrounds or other places generating high levels of noise. This parameter is also not without influence on the thermal insulation of PVC windows, which affects the reduced inflow of air from outside. This feature is extremely important especially during the heating period, because it has a positive effect on heating bills
Easy care
The last of the key advantages of PVC windows is the fact that in order for them to present themselves impeccably, apart from occasional cleaning of frames, they do not require almost any care, in comparison with wooden models, which should be painted protectively. Moreover, their cleaning itself does not require the purchase of specialized agents either. All you need is warm water with dishwashing liquid, a soft cloth and glass cleaner to restore their original splendour and cleanliness
How to take care of PVC windows?
In spite of the fact that after being installed in buildings PVC windows require almost no user's interference in their construction in order to fulfil their task efficiently, sometimes there are situations in which they need some attention. Such an eventuality may be a slight lowering of the window frame in the first year of its use. However, then it is enough to adjust them with a wrench to be able to enjoy their full functionality again
To sum up, PVC windows are one of the best choices in case of buildings located in noisy neighbourhoods as they provide excellent acoustic insulation. Moreover, they don't require any complicated maintenance or upkeep and are guaranteed to last up to 50 years. All this combined with a low price makes them worth taking an interest in, choosing window fittings not only for houses but also for public buildings
hat ventilation solution should I choose for my home? Recuperation or gravity ventilation? Which works better in modern construction? Come and see for yourself!
