Municipal waste water treatment plants
for 850 - 5000 EI
Municipal waste water treatment plants of this size are made in two type series:
- WWTP AČB – classic flow activation WWTP
- WWTP AČB SBR – sequencing batch reactor
Supplies
The basic AČB treatment units are designed to be built in concrete reservoirs (arranged in two parallel lines), final sedimentation reservoirs are separated. WWTP AČB SBR may contain one or two reactors.
The basic treatment unit is complemented by a pumping station, coarse preliminary cleaning, tertiary treatment, gauging shaft, sludge terminal, event. other technological unit.
WWTP AČB 850 - 5000
Function description
WWTP AČB 850 to 5000 are manufactured in a type range of 7 sizes. Waste water flows in through the supply pipe into the denitrification zone of the plant through a division shaft, which divides the inflow into both parallel reservoirs. The denitrification zone is mixed using immersion mixers, eventually coarse-bubble aeration elements, the nitrification zone is fully aerated by fine-bubble elements. A degassing unit is installed at the drain from the activation area, then the activation mixture spontaneously flows out into the centre cylinder of the settlement tanks installed behind the treatment plant activation reservoirs. Treated water flows off the treatment plant through a discharge trough with scum boards. Floated and sedimented activated sludge is withdrawn by air lift pumps (event. simple pumps) back to the activation zone, or using the other air lift pump into the sludge collector as excess sludge. The pressure air for the aeration systems and air lift pumps is generated by blowers, in the following composition: or 2 operating + 1 reserve; aeration of sludge collector is provided by a reserve blower. The treatment plant operation is controlled by the MPC 300 control system.
Advantages of WWTP AČB 850 to 5000:
- Classic flow WWTP with aeration for versatile use
- Long service life of technological equipment of the WWTP
- High efficiency of removal of organics, event. nutrients
- Low noisiness
- Automatic operation
- Low cost of acquisition and operation
Basic data
| Typ AČB | 850 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | |
|---|---|---|---|---|---|---|---|---|
| No. of equivalent inhabitants | EI | 750-850 | 850-1000 | 1000-1500 | 1500-2000 | 2000-3000 | 3000-4000 | 4000-5000 |
| Waste-water quantity Q24 | m3/d | 113-128 | 128-150 | 150-225 | 225-300 | 300-450 | 450-600 | 600-750 |
| Basic dimensions - length × width - water depth |
m m |
2 reserv 3,0 × 6,5 4,0 |
2 reserv 3,6 × 6,5 4,0 |
2 reserv 4,2 × 8,1 4,0 |
2 reserv 4,8 × 8,1 4,5 |
2 reserv 5,4 × 11,0 4,5 |
2 reserv 6,0× 13,2 4,5 |
2 reserv 9,0 × 11,0 4,5 |
| Settlement tanks | 2 reserv DN 300 |
2 reserv DN 360 |
2 reserv DN 420 |
2 reserv DN 480 |
2 reserv DN 540 |
2 reserv DN 600 |
2 reserv DN 600 |
|
Treated water quality
| Indicator | Guaranteed values of soiling in outlet (mg/l) acc. to SO 61/2003 Coll. | Usually attained average values in outlet (mg/l) | |
|---|---|---|---|
| "p" | "m" | ||
| BOD5 | 30 | 60 | 15 |
| COD | 125 | 180 | 75 |
| Insoluble solids | 35 | 70 | 20 |
| N-NH4+ | - | - | 10 (for water > 12°C) |
WWTP AČB SBR 850 - 5000
Function description
WWTP AČB SBR 850 to 5000 – they are made in a type range of 7 sizes. AČB SBR works on the principle of low-rate activation with sequential batch reactor where the same reservoir (reactor) is used for both activation and sedimentation of suspended solids. According to the type, the reactor consists of one or two reservoirs. A sedimentation reservoir may be installed before the reactor. This reservoir serves at the same time as an accumulation collector and a collector for partial anaerobic sludge stabilization. The separate phases of the treatment process in the reactor (filling with aeration, sedimentation, removal of treated water and excess sludge) are connected in cycles to each other. Treatment plant AČB SBR may also be designed as a WWTP with nitrification and denitrification. It is also possible to install chemical precipitation of phosphorus. The basic version of the treatment plant is controlled by the MPC 300 control system.
Advantages of WWTP AČB SBR 850 to 5000
- The best-fit solution for irregular (seasonal) inlet of waste-water into the WWTP
- Ideal solution to the redevelopment of existing WWTPs
- Optimal solution if step by step connection of the WWTP units is necessary
- Simple installation
- Low energy demand
- Modern technology with high efficiency of removal of organics, event. nutrients
- Automatic operation
- Low cost of acquisition and operation
Basic data
| Typ AČB SBR | 850 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | |
|---|---|---|---|---|---|---|---|---|
| No. of equivalent inhabitants | EI | 750-850 | 850-1000 | 1000-1500 | 1500-2000 | 2000-3000 | 3000-4000 | 4000-5000 |
| Waste-water quantity Q24 | m3/d | 128 | 150 | 225 | 300 | 450 | 600 | 750 |
| - Qmax | m3/h | 18,4 | 20,6 | 28,8 | 38,5 | 55,1 | 73,5 | 91,9 |
| Orientation reactor vol. | m3 | 156 | 173 | 260 | 346 | 519 | 692 | 865 |
Treated water quality
| Indicator | Guaranteed values of soiling in outlet (mg/l) acc. to SO 61/2003 Coll. | Usually attained average values in outlet (mg/l) | |
|---|---|---|---|
| "p" | "m" | ||
| BOD5 | 30 | 60 | 15 |
| COD | 125 | 180 | 75 |
| Insoluble solids | 35 | 70 | 20 |
| N-NH4+ | - | - | 10 (for water T > 12°C) |