EKOL 12: wastewater treatment plant for 80 people

Quality and comprehensive wastewater treatment solution for 80 people. Our EKOL 12 wastewater treatment plant provides excellent efficiency and minimises operating costs, enabling optimal performance for the demanding needs of larger properties.

For complex and demanding needs, we have developed the EKOL 12 wastewater treatment plant for 80 people, which guarantees first-class wastewater treatment with minimal operating costs. With our reliable plant, you can be sure to achieve excellent water quality for large properties such as hotels, apartment buildings, restaurants and other establishments without a connection to the sewerage system.

At Morava Ekol, we offer a full range of purifiers to cover any kind of load. You can choose a sewage treatment plant for 7 persons, for 15 persons, for 25 persons, for 40 persons, for 60 persons or for 100 persons.

Description and functions of the EKOL 12 wastewater treatment plant

The EKOL 12 sewage treatment plant is at its core a tank made of wall elements and polypropylene plates, closed with a split removable lid. The lid contains ventilation and clearance holes for sludge removal and is non-penetrating.

The tank is divided into a primary sedimentation area - settling area (A), a storage area (E), a biological treatment area (C) with a rotating biocontactor (B) and a settling area (D). The biological contactor consists of a cage filled with small plastic elements. The rotation of the rotor is provided by a drive unit consisting of a sliding gear box, a V-belt transmission, an electric motor with a distributor.

Functional diagram of the EKOL 12 sewage treatment plant

How the EKOL 12 plastic sewage treatment plant works

Cleaning is integrated inone packaged unit, where there is both a mechanical cleaning section (A,D,E) and a biological cleaning section (B,C). Mechanical treatment is carried out in a two-chamber settling tank (A) by simple sedimentation. A part of this area near the bottom is reserved for anaerobic sludge stabilisation, thickening and storage (E). Pre-treated water flows into the biological treatment area (C) where the progressive TF/SC method, first introduced in the USA 15 years ago, is used.

This treatment method uses the activity of sessile and emergent organisms. The composition of these micro-organisms is so different that they are complementary in their effects. This results in a balanced treatment effect, and at the same time a higher resistance to hydraulic and metabolic shocks compared to conventional wastewater treatment methods.

The activated mixture from the biozone (C) flows through a degassing chute into a vertical settling tank (D), which is connected to the biozone area (C) at the bottom. This ensures continuous dewatering of the settling tank (D) and the excess activated sludge is pumped back to the settling tank (A) by means of a wheel located on the periphery of the biorotor, where it is mixed with the freshly flowing polluted water.

In the settling and storage tank (A,E), the activated sludge flakes and the sludge water are separated and flow back together with the inflow to the biozone. In this way, communication between the biozone (C), the settling tank - septic tank (A) and the settling tank (D) is ensured. The clean water outlet trough from the settling tank (D) is equipped with adjustable brick walls to prevent floating suspended solids from the surface of the settling tank from escaping into the outlet.

Drawing of the sewage treatment plant
Section of the sewage treatment plant

Maintenance of the EKOL 12 maintenance-free sewage treatment plant

EKOL series WWTPs do not require daily maintenance and their function will be maintained unless there is an interruption in the power supply. These are maintenance-free wastewater treatment plants. For optimum functionality of the plant, the stored sludge needs to be pumped out once a year and the bearings lubricated twice a year.

Where the EKOL 12 sewage treatment plant is used

The EKOL 12 mechanical-biological plastic sewage treatment plant is used to treat sewage from residential complexes, recreational facilities, hotels, campsites, social facilities, farms and factories for 80 equivalent persons.

The initial basis for the design and installation of the WWTP are the requirements of the water management authorities for the quality of water in the relevant watercourse into which the treated wastewater is discharged, the requirements of investors and planning authorities.

Technical data of the EKOL 12 wastewater treatment plant

  Unit EKOL 12
Equivalent. Residents EO 80
Daily water flow


Daily BOD5 contribution kg/day 5,2
Water depth mm 2 000
Total usable volume m3 19,4
Volume of settling (sludge) space m3 11,6
Volume of active space m3 4,5
Volume of existing space m3 4,0
Dosaz. area of the tank m2 2,4
RBC rotor area m2 398
Rotor speed RPM 5,2
Engine power W/400 V 180
Total weight kg 1 900
Technical data    
Length mm 5 000
Width mm 2 160
Tank height mm 2 500
Total height mm 2 900
Inlet height mm 2 130
Outlet height mm 1 880