#. Why use treatment systems from Eco Tad Industries?

We can only discuss some of the reasons why our customers say: “EcoTad septic tanks are easy to install and to move and they lead to savings”, “G/V monoblock treatment plants are lightweight and durable”, “Grease and heavy particle separators are environmentally friendly and recyclable”, or “Septic tanks resistant to temperature variations”. We can add the fact that mini-treatment plants are resistant to atmospheric agents, acids, corrosion and immune to mould and lichen. Products are also accessible due to their promotional prices.

Product sustainability is supported with full confidence by the manufacturers we represent, which not only provide 2-year warranty for manufacturing defects and 30 years for corrosion, but also guarantee the replacement of the product with a new one in case of defects. Throughout the warranty period, technicians supervise the good functioning of the products and respond promptly to all technical and technological questions addressed by the buyer.

1. What is an ecological septic tank?

Septic tank is an ecological domestic wastewater treatment system, and is the best solution for dwellings located in areas not connected to a centralised sewer system. The septic tank is made of a special material (HDPE - high-density polyethylene) designed to withstand high temperature differences (from -60° to + 80°C).

2. Why an ecological septic tank?

It is a more advantageous system due to the lower purchase, maintenance and installation costs compared to the classic concrete system.

3. How to mount a septic tank?

A pit and three parallel ditches for the drainage system are dug (the pits can be dug manually or by special machines), the pipe from the house is connected to the inlet pipe to the tank and from the tank to a drainage system into the soil!

IMPORTANT: Before burying the septic tank, it must be filled with water!

4. How does a septic tank work?

Before explaining how an ecological (biological) septic tank works, it is important to know what components this system has:

  •         Inlet pipe
  •         Outlet pipe

    Internal (digestion-fermentation) tank - here, in the absence of oxygen, a bacterial culture is formed (the anaerobic process of matter decomposition) that decomposes the matter by extracting its water content.

    External (sedimentation) tank - this tank has the role of sedimentation of the pollutant sludge resulting from digestion.

    Biogas evacuation - It is recommended that the evacuation be done through a 1” nipple, which connects to the exhaust system at the top of the tank (tapped hole with cap)

    The manhole/emptying hole - the tank is provided with an inspection cap (threaded) on the upper part of the tank through which emptying is also performed. 

5. How is the drainage system performed?

1-2-3 parallel ditches are dug (depending on the capacity of the septic tank and the space you have), perforated drainage pipe (110 or larger) is connected by a T-elbow to the exit of the septic tank, after which, pipes are laid on the three parallel ditches.

IMPORTANT: For optimal functionality, a small slope from the house to the tank and from the tank into the drainage system [about 2-3%] must be provided.

6. When is the bacterial culture added?

The bacterial culture (biological activator) is added before the first use. It has the role of accelerating the formation of bacterial culture.

7. What papers accompany the septic tank?

Declaration of Conformity, Technical Book, (with installation and usage instructions), Warranty Certificate, payment document (invoice).

8. What does p.e. mean?

P.e. = population equivalent. Thus, according to CE 12566/3, the flow is calculated taking into account the average consumption per person, of about 200 L/day. Therefore, an ECO6 septic tank is sized for 6 p.e. Its maximum capacity is calculated for 6 p.e. x 200 L = 1,200 L of domestic water/day.

9. How is an oil and hydrocarbon separator dimensioned for a car wash?

Depending on the washing capacity or the number of stations, an estimated daily flow is calculated. Depending on this flow, the size of the oil and hydrocarbon separator is determined. Depending on the spill area, it can be simple, acting also as a sand trap, or coalescent filter, which increases the tank’s efficiency up to 98%.

10. How often should a septic tank be emptied?

The Imhoff septic tank is emptied every 2-3 years (under normal operating conditions). This period may increase if the septic tank is not exploited intensely, or it may decrease if the septic tank is exploited beyond the operating limit.

11. If it is desired to have road or pedestrian traffic on top of the septic tank, how is this done?

If cars would pass over the septic tank, it is imperative to build a concrete housing around the septic tank, and a carriageway cover shall be mounted above it. The concrete housing and the carriage cover will bear all the weight.

12. How often should the biological activator be added to the septic tank?

The biological activator is added when you want to put your septic tank into operation. This is basically added once at the beginning of use of the tank. At the time of the first emptying, the tank content will be drained 90-95%, and the 5% of the sludge remaining in the lower part of the tank will help restore the bacterial fauna inside.

13. Will the water in the septic tank or drain freeze during the winter?

No. Because there is an anaerobic fermentation process inside the septic tank, which releases heat. Water in drains will not freeze because they are buried under the freezing area of ​​the soil (90-100 cm).

14. How is a septic tank emptied?

The septic tank is emptied through its inspection cover, which is located at the top of the septic tank.

15. Can water from the septic tank be discharged into a river or other source of water?

No. The water from the septic tank must be discharged into the soil through a drainage system.

16. If I want to drain septic tank water into a river or emissary, how do I do?

To dispose of water in a river or emissary, you need an AS (active sludge) purification plant. This will be installed in the septic tank (the water in the septic tank will reach the AS, and from there, into a river or emissary. With this septic tank + AS system, the treated water will comply with the NTPA001 rules (rules on the discharge of domestic water into a river or emissary).

17. What is the optimal length of the drain?

The length of the drain is calculated according to the number of people and depending on the type of soil. If the soil has good permeability conditions, 5 m are calculated per inhabitant (e.g., for a 4-person ECOIMO4 septic tank, the length of the drain will be at least 20m). If the soil does not have good permeability conditions (clayey), 7-8 meters of the pipe per person are required. For a 4-person septic tank, the length of the drain in this case will be at least 30 m.