FAQ
1. Is it necessary to rigorously keep to the drainage length?
Yes, because its life depends on this. Incorrect drainage size might result in silting the layers laying under the distribution pipes. Appropriately tense and laid pipe and a good ratio of drainage length to the amount of sewage (depends on the equivalent number of inhabitants) guarantee good operation of the system.
2. How to provide a foundation for an on-side waste water pumping station tank?
Detailed guidelines concerning foundation will be supplied to the customer with each tank ordered. The tanks supplied, as all large-size plastic products, are intended for foundation on a subsoil with no underground water and in a non-traffic area. It is allowable to locate the tanks on subsoil containing some underground water provided that the foundation conditions provided for in the construction design will be obeyed and an appropriate capping will be used in traffic areas. The foundation works include:
- excavation works,
- laying the sub-crust,
- tank assembly and backfilling,
- securing a tank located on watered ground and in traffic areas.
Our tanks can perfectly feature as retention tanks for storing rain water. Water collected in this way can be further used in the household.
3. How to make a foundation for a sink basin?
Detailed guidelines concerning foundation will be supplied to the customer with each tank ordered. Sink basins made of PE, similarly as all tree-dimensional PE facilities, are intended for foundation on dry non-watered ground. MONOKAN basins can be used without any specific restrictions if there is some underground water up to the level of 1.0m (0.8m) below the base unit bottom, especially if due care is given to sub-crust and backfilling. The foundation works include:
- excavation works,
- laying the sub-crust,
- sink basin assembly and backfilling,
- capping assembly.
4. How deep under the ground can an on-site waste water pumping station tank be located?
Detailed guidelines concerning foundation will be supplied to the customer with each tank ordered. The tanks supplied are intended for foundation on non-watery ground in a non-traffic (green) area. In its standard version, tank cover should no be thicker than 70 cm. It is allowable to locate the tank in underground water or traffic areas on condition that extra security measures will be applied as provided for in the construction design.
5. Can treated water from drainage/SBR-type plants be discharged into fish ponds?
No, because waste water from drainage-type plants is absorbed by the soil, whereas water from the SBR-type plant should be returned to its natural environment. Even best treated waste water cannot be reused. Before flowing into fish ponds water should be tested for compliance with sanitary conditions and the pollution indicators specified in a resolution issued on the basis of art. 45 item 1 point 1 and 3 of the 18 July 2001 Water Act should not be exceeded. Tests into the quality, amount and conditions of waste water should be performed in line with the above mentioned regulation.
6. Are there any specific permits I should have in order to build an on-site waste water treatment plant?
The capacity of our plant intended for an equivalent of 4 people is 0.6 m3/day. According to current regulations an on-site waste water treatment plant with a capacity of up to 5 m3/day constructed the land you own does not require a water-permit, and a plant with a capacity of up to 7.5 m3/day does not require a building permit as well. All information on registry requirements concerning construction of an on-site waste water treatment plant can be obtained from a relevant Construction Department.
Our tanks can perfectly feature as retention tanks for storing rain water. Water collected in this way can be further used in the household.
7. Why does a waste water treatment plant "stink"?
If the whole facility is properly designed and assembled, no odors should be noticeable. One needs to ensure that odors do not make their way to the interior of the house through sinks, wash basins, toilets etc which means that these should have their U-bend constantly immersed in water.
In order to equalize the pressure in sewage pipes (de)aeration connectors should be used.
Deaeration pipes in a facility need to be directed above the roof level and topped with a uptake ventilator.
8. What is the lifespan of drainage systems?
Waste water treatment process includes two phases: anaerobic and aerobic. In case of eco-plants without aeration inside the tanks (drainage-type plants of the EKO-SYSTEMY company) the anaerobic phase takes place in the tanks, whereas the aerobic one in the drainage pipes. As a results of the aerobic phase the drainage area wears off (it is no longer capable of collecting waste water). On average, a drainage area can be operated for about 12 years.
9. How to select an on-site waste-water treatment plant?
Selection criteria mostly depend on:
- average monthly waste water volume,
- ground-related conditions,
- size of the drainage area.
It is also necessary to take specific requirements of the user into account which are different in the case of single-family houses, hotels, or a school.
10. How to operate a drainage-type waste water treatment plant correctly?
First of all, one should pay utmost attention to adding bio-preparations at regular intervals (every two weeks on average). Bio-preparations are the motor of a waste water treatment plant and without them the putrefaction process in the settlement tank and preliminary treatment cannot run correctly. This results not only in unpleasant odors but also in silting the drainage. The draining system itself should be flushed with water every two years. In order to do this a special preparation should be sifted to the basin with water pressed at the same time.
In the sedimentation tank, grease gathers at the surface. If we do not fill the tank with water, then, after emptying it (so that the water gets all transferred to the basin), the grease and residues gathared will also make their way to the draining system and silt it which entails extra, but unnecessary costs.
11. How can I use the land above the drainage area?
The drainage system doubles as a free irrigation facility. Therefore the land can be successfully used as a lawn or planted with plants that do not have extensive roots. No heavy vehicles should drive on the waste water treatment plant.
12. Where should I locate the drainage-type on-site waste water treatment plant?
A drainage-type waste water treatment plant should best be located on permeable, flat land with low level of underground water.
However, various technologies make it possible to install a draining system even in unfavorable conditions e.g. by exchanging the soil in the drainage area or making an embankment. In such cases, a specialist should judge a specific situation.
13. Does such a plant operate in winter.
Yes, the fermentation process taking place in the septic tank rises waste water temperature considerably. Even with heavy frost it is about a dozen or so degrees Celsius. The in-flowing waste waster itself is relatively warm with a temperature of up to 40°C.
14. What happens to the plant if no sewage is supplied for a certain period of time?
If there is a pause in sewage supply, the bacteria in the septic tank get dormant. They reactivate quickly once new sewage is supplied.
15. Can the cleaning agents used in household adversely influence the operation of the tank?
No, anti-bacterial preparations, including antibiotics, only destroy a very limited number of bacteria which does not influence the work the the plant much. Detergents are fully water-soluble and the majority of them get already decomposed in the septic tanks.
16. Is it possible to enlarge a water treatment plant?
Yes, the plant can be enlarged by adding an extra septic tanks and extra drainage system.
