The equipment is used for treatment of municipal wastewater for small sources, as houses, cottages and similar objects that are not connected to sewerage system. The treated wastewater arises from all sanitary facilities: WC, bathroom, washing machine, dishwasher etc. The domestic plants (type designation DC) are manufactured in the service range 2 to 25 persons.
Biological process is applied for wastewater treatment in the domestic unit DC produce by Company ADOS. The basic process is life process of biomass represented by activated biological sludge. It is a mixture of microorganisms, which needs and process to lives matters contained in wastewater. In the course of the treatment process some secondary effects occur whet ammoniac (nitrification) and nitrates (de-nitrification) from water and removed. The purified water is separated from the activated sludge and is discharged through overflow to recipient while the activated sludge is returned to the beginning of the treatment process circuit. At setting the reactor into operation activated sludge from an existing operating plant is used. During the treatment process the microorganisms are reproduced and the activated sludge accumulates. The amount of sludge is maintained on optimal level and excess sludge is discharge from the reactor. In this process no chemical materials are used.
The reactor of the plant consist of cylindrical plastic tank, conical separation structure and air-distribution system including air blower. The conical structure divides the reactor in two compartments: inlet (activation, de-nitrification) section and outlet section (secondary sedimentation). Wastewater flows into the activation section through inlet strainer where larger solids are caught. There is mixed with activated sludge. Microorganisms present in sludge affect the matters contained in wastewater and start the treating process. Water is separated from sludge in the final sedimentation compartment and is discharged through overflow and sludge is pumped by airlift pump back to the inlet section.
Biological Oxigen Demand, BOD
|Type||Num. of persons||Load BSK5 kg/day||Capacity m3/day||Power input kW||Total weight kg||Tank diameter /Tank height m||–||Inlet level m||Outlet level m|
|DC 4||2 – 5||0.12 – 0.30||0.4 – 1||0.09||200||ф1.6×1.52||1||1.62||1.32|
|DC 8||6 – 10||0.36 – 0.60||1 – 2||0.09||350||ф2.1×1.62||1||1.72||1.42|
|DC 12||11 – 14||0.66 – 0.84||1 – 2.8||0.12||350||ф2.1×1.62||1||1.72||1.42|
|DC 18||15 – 22||0.90 – 1.32||2.2 – 4.4||0.12||500||ф2.3×2.02||1||2.12||1.82|
|DC 25||23 – 26||1.38 – 1.56||2.2 – 5.2||0.24/0.55||500||ф2.3×2.02||1||2.12||1.82|
There are several important rules to be kept when installing the unit. Following these rules shall guarantee free operation and prevent possible damages caused by incorrect installation.
Standard warranty period is 2 years.