Adipur C


NO. Equipment List for the Wastewater Treating Plant ADIPUR C
1. Manual plane dam
2. Rare grate
3. Sieving installation RoK4
4. Retaining container sieve
5. Equipment for the sand pumping station (sand development preventer + grease separator)
6. Retention wall for foam and grease
7. Homogenization mixer
8. Equipment for gross wastewater pumping station
9. Equipment for contact tank mixing (for version B)
10. Sludge suction system
11. Technological module for equipments
12. Modular system for mechanical-biological treatment
13. Instruments for measuring and control
14. Command module and automation for the wastewater treating plant



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Ensures the reduction of organic loading based on carbon and nutrients (nitrogen and phosphorus compounds), using an activated sludge process and a de-nitrification-nitrification system; the phosphorus reduction is accomplished by chemical precipitation.


The water line comprises:

the mechanical stage
Adapted to the capacity of the station and the characteristics of the wastewater.

  • rare grate with manual cleaning
  • fine grate 
  • sand development preventer 
  • underground concrete homogenization tank for improving the fluctuations of the wastewater flow and pumping station 
  • primary decantor with timed elimination by pumping the primary sludge; small quantities of floating fats are removed by hand; placed in the biological module
  • the functioning of the equipments from the mechanical stage is commanded with level sensors, or timed, as applicable.


the biological stage
The mechanical treated wastewater passes through circular the biological module, that comprises:

  • the de-nitrification compartment, where the wastewater goes together with the internal recirculating flow and the sludge from the secondary decantor; here the anoxic conditions are fulfilled to transform nitrates into nitrogen gas; the suspension is maintained by a submersible mixer.
  • the airing compartment where the carbon compounds are reduced and the ammonium is oxidized
  • the airing system, that comprises blowers and probes that measure the level of dissolved oxigen 
  • the pump for internal recirculating, for bringing the nitrates into the de-nitrification area
  • the process is controlled by measuring the level of dissolved oxigen, and the level of MTS from the bioreactor is measured with probes and commands the extraction of excess sludge from the secondary decanter 
  • secondary lamellar decanter, where the sludge settles gravitationally; the sludge is recirculated in the bioreactor or, as the case, sent to the sludge collecting tank; it is accomplished automatically by operating an electric valve; the wastewater is collected by an overflow from the secondary decanter 
  • the biological module is made of stainless steel, and its walls are protected against freezing


The water line is continued by the UV or hypochlorite disinfection system, then it passes through the wastewater manhole where the effluent flow is measured.


The sludge line

The excess sludge is eliminated from the secondary decanter to an underground concrete tank, and from there it is pumped towards de vacuum dewatering installation.


The equipment compartment and the electric panel

  • the installation for dosing precipitants
  • the disinfection installation 
  • the polyelectrolyte dosing system
  • the sludge dewatering installation
  • the electric panel




  • Mechanical cleaning by sieving impurities larger than 3 mm, evacuation of retentions from the sieve directly into metal containers;
  • Separating grease and sand; 
  • Homogenization of wastewater.
  • Biological treatment by nitrtification and de-nitrification using biofilters.
  • Evacuation of primary and excess sludge;
  • Disinfection of treated water before discharge in the emissary, with sodium hypochlorite or UV treating.
  • Excess sludge treating by thickening and dewatering with the filter press with bags




Influent parameters in the wastewater treating plant
NTPA 002/2005, HG 352/2005
Effluent parameters in the wastewater treating plant
NTPA 001/2005
CBO5 - 300 mg/l
CBO5 - 25 mg/l
MTS = 350 mg/l
MTS = 60 mg/l
NH = 30 mg/l
NH4 = 3 mg/l
N total = 47 mg/l
N total = 15 mg/l
P total = 5 mg/l  P total = 2 mg/l
extractable = 30 mg/l  extractable = 20 mg/l

ADIPUR C A-750 A-1000 A-1300 A-1500 A-2000
Slab concrete dimensions for the biological reactor
(slab diameter) [m]
8 8 10 10 11
Slab concrete dimensions for the equipment module
(Lxl) [m]
6 x 3


ADIPUR C A-2500 A-3000 A-4000 A-5000 A-6000
Slab concrete dimensions for the biological reactor
(slab diameter) [m]
 12  2 x 10
 2 x 11
 2 x 12
 2 x 14
Slab concrete dimensions for the equipment module
(Lxl) [m]
     6 x 3




It offers the advantages presented for the ADIPUR BM plus a series of other advantages as follows:

  • Larger work volumes
  • It solves the problem of great wastewater input in a very short period of time
  • Reduced concrete constructions
  • Clearly defined technological flow and characterized by simplicity.