Small wastewater treatment plant BIO ST2-5000 Combi Household

wastewater treatment plant - fully equipped

Small treatment plant designed to serve up to 10 people (EJ) (*).

BIO ST2-5000 Combi is a small wastewater treatment plant

Sewage Solutions BIO ST2-5000 Combi treatment plant is a compact bioreactor solution with a biofilter and primary tank. The bioreactor is designed to treat the wastewater to 10 people at home, at a minimum volume of primary tank of 5000 liters . The BIO ST2-5000 Combi system functions as a two-level WWTP. The raw wastewater is initially fed into the BIO ST2-5000 Combi primary sludge to ensure the pre-separation and initial decomposition of the organic solids. The wastewater is then passed through a wastewater filter before entering the BIO ST2 treatment module, where an aerobic filtration process takes place.

(*) Depending on the wastewater quality requirements, in some cases it is possible for the treatment unit to absorb more than the officially intended equivalent of residents (E.G.)

Biological treatment

The next level of the process is defined by the BIO media . BIO  media has been pre-treated with enzymes to achieve rapid start-up and stimulate the growth of the right type of bacteria; These bacteria colonize the media in large quantities and rapidly degrade organic waste. The philosophy of wastewater treatment is based on aerobic / anoxy biological degradation and filtration. The advantage of BIO technology is further characterized by - minimum maintenance requirements and the ability to handle periodic (seasonal) loads. (E.g. vacation homes, chalets, campgrounds, etc.)

Revolutionary Technology

Sewage Solutions BIO modules are complete wastewater treatment plants (WWTPs) providing quality that is compatible with the highest standards. Bio-treatment technology requires no electricity or moving parts. As a result; maintenance and operating costs are particularly low and reliability is maximized. The modules are built in durable HDPE tanks with lightweight, low profile access caps. WWTPs are shipped as a complete kit for easy installation. BIO modules uses a unique, fixed feature biofilm technology with specific functions to achieve a odorless purification effect to a level suitable for irrigation or reuse as "industrial water". Due to the high quality of the treated water, they can be discharged into the "sensitive area" receiver if necessary.

Small BIO L / ST2-5000 Combi wastewater treatment plant
Capacity EZ 10 inhabitants
Capacity 1500 liters
Length 5850 mm
Width 1150 mm
Height 2040 mm
Weight 587 kg
Volume 7000 liters
Primary precipitator 5000 liters
Footprint 6.8 m2
Open it 1 x 1250/700 & 2 x 700 mm
Small treatment plant designed to serve up to 10 people
BIO ST2-5000 Combi Household
Combi Household
BIO ST2-5000 Combi


1 Pirin Planina
7800 Popovo,


Phone: +359 (0) 608 411 00