Wastewater purifying plants for Municipality
, ISO 9001
Slovenian manufacturer, tradition and professionalism ROTO is the Slovenian manufacturer of plastic products with 35 years of tradition. These products are result of own knowledge of engineers and cooperation with institutes and detailed work of over 200 employees. ROTO is a private company with residece in Murska Sobota, who also has subsidiary manufacturing companies in Croatia, Serbia, Macedonia and Slovakia. The company is certified according to ISO 9001 and ISO 1400.
ROTO has its own production, R&D, sales logistic and after sales service. ROTO has recieved numerous international awards such as »Award for outstanding business achievements in the SCC (GZS)«, Eco-Partnership, Symbol of hospitality, Quality price in construction, ect…
Select ROTO Purifying plant is the right decision 1. HIGH PURIFICATION CAPACITY – the ROTO purifying plants purify water up to 95%. The ROTO purifying plants operate safely and reliably, almost without making a noice and without unpleasant smell. Moreover, they are not sensitive to temperature fluctuations in the environment. Waste water from toilets, bathrooms, kitchens and similar household sources of pollution are purified to such extent that water can safely be released into surface waters or underground streams.
4. RELIABILITY AND TRUST. ROTO is a pioneer in the field of waste water treatment plant production in Slovenia and Europe. Our treatment plants are installed in 26 countries around the world. Over 20,000 ROTO purifying plant ranging from 3 to 500 units of various types have been installed. The product received the ZRMK Building and Civil Engineering Institute’s award, which is selected by experts in civil engineering, proving the product’s excellence.
2. EXCELLENT QUALITY – the ROTO purifying plant is constructed according the European SIST EN 12566 standard and achieves the purification levels prescribed in EU: BPK 5<30 mg/L, KPK<150 mg/L.
5. 24-HOUR SERVICE – Quick supply, maintenance, start-up and servicing performed by expert staff. Servicing by the ROTO company comprises the checking of mechanical parts in a plant, general cleaning services and operating situation control, as well as the testing of all functions performed by individual plant parts. The user is instructed on maintenance and the correct use of the treatment plant. We can also organise or supervise the installation and burial of the treatment plant into the ground.
3. LOW OPERATING COSTS, high level of economic and energy efficiency. The cost of the electric energy consumed by a ROTO purifying plant is annualy only €6.1 per person (0.1kWh per day per person).
USE
EU DIRECTIVE
Purifying plants are used for the purification of waste water from toilets, bathrooms, kitchens and similar sources of pollution from houses and other residential facilities.
According with the EU Directive, every building must be connected to the sewage network system or provide its own treatment by year 2015. In cases where a connection to the sewage system is impossible or is too expensive, the most rational investment is to install a purifying plant.
CONFORMITY OF TREATMENT PLANTS ROTO's small purifying plants are made according European SIST EN 12566 standard and bear the marking CE.
www.roto-group.eu | info@roto.si | tel: +386 (0)2 52 52 249
The SBR treatment plant The cleaning process of municipal wastewater Operating the ROTO SBR treatment plants Process is managed by computer which is built into the special box. The computer contains set times for the functioning of individual phases. The computer controls 4 valves, each with its own function: 1. Pumping water from the mud collector to the aerator 2. Aeration in the aerator 3. Pumping purified water from the treatment plant to the outflow 4. Pumping sediment mud from the aerator back to the mud collector 1. The waste water flows into the treatment plant in free fall and is collected in the first chamber, the mud collector, which accumulates waste water coming from the house. 2. From the mud collector, the compressor, working on subpressure, pumps through a certain amount of toilet water into the aeration pool. In the process of pumping through, the computer turns on the first valve. 3. Air (micro bubbles) is supplied through the compressor into the aeration pool, where the decomposition of toilet water occurs by means of bacteria. The compressor supplies air through the other valve and the membrane into the treatment plant. The aeration time depends on the size of the treatment plant. 4. After the aeration is finished, the mud sedimentation phase in the aeration pool begins. The purified water on the surface is separated from the sediment. In the sedimentation phase, the compressor doesnâ&#x20AC;&#x2122;t work. 5. The purified water is pumped out (on sub-pressure) of the aeration pool by means of the compressor (the third valve is activated). 6. The mud sediment is pumped through (on sub-pressure) from the aeration pool by means of the compressor (the fourth valve is activated). The purification procedure is repeated several times a day.
Dimensions of purifying plant (mm)
Model
Code
Volume (L)
Compressor power (W)
A (L)
B (W)
Hmin
Hmax
H inflow (HI)
H outflow (HO)
Pipe diameter DN (mm)
20 PE
6379
12000
DT 4.8 250W
3760
2310
2350
2830
2120
2080
160
30 PE
6376
12000
DT 4.10 250W
3760
2310
2350
2830
2120
2080
160
40 PE
6382
20000
DT 4.16 440W
6280
2310
2350
2830
2120
2080
160
50 PE
6383
20000
DT 4.16 440W
6280
2310
2350
2830
2120
2080
160
75 PE
6385
30000
DT 4.25 700W
8800
2310
2350
2830
2120
2080
160
100 PE
6384
40000
DT 4.40 1,10kW
11320
2310
2350
2830
2080
2040
200
600
400
Mud collector
DN 160
HO - 2080
A
2310
Mud collector
HI - 2120
Hmax=2830; Hmin=2350
DN 160
The SBR-S municipal wastewater purifying plant Basic characteristics of SBR-S control • Remote control is possible from any personal computer or mobile telephone • Alarm is triggered upon an error in the form of an e-mail, which is free (there is also an SMS option with a charge) • Optimum energy consumption by means of using a sensor for dissolved oxygen • Storing the entire history of the treatment plant events on a server • Connectivity with existing SCADA systems via the SQL database • Control over the amount of water passing through the treatment plant (with linear level sensor) • Remote changing of the treatment plant’s parameters (for authorised persons)
The principle of SBR-S functioning
Dimensions of purifying plant (mm)
Model
Code
Volume (L)
A (L)
B (W)
Hmin
Hmax
H inflow (HI)
H outflow (HO)
Pipe diameter DN (mm)
100 PE
6384
40000
11320
2310
2350
2830
2080
2040
200
150 PE
6386
50000
13840
2310
2350
2830
2080
2040
200
200 PE
6387
2 x 30000
8800
5500
2350
2830
2080
2040
200
300 PE
6388
2 x 40000
11320
5500
2350
2830
2080
2040
200
400 PE
6389
2 x 50000
13840
6000
2350
2830
2080
2040
200
500 PE
6390
3 x 40000, 1 x 30000
11320
10850
2350
2830
2080
2040
200
Concrete locker
DN 200
HO - 2040
A
2310
DN 200
HI - 2080
Hmax=2350; Hmin=2830mm
IN
PHASE 1 – INFLOW – The water is pumped from the MC (mud collector) into the AP (aeration pool) to the upper level by means of a pump P1=IN (inflow). The linear level sensor (LS) carries out the measurement. Inflow time is OUT limited. PHASE 2 - AEROBIC PHASE – The inflow is followed by the functioning of the blower. The latter is controlled by means of a dissolved oxygen meter (O2 – mg/l) with upper and lower limits set. This ensures optimum conditions AP for the microorganisms to develop and work. The blower is additionally controlled by means of a frequency converter which is set to ensure optimum aeration. PHASE 3 – ANAEROBIC PHASE – Time without aeration. PHASE 4 – Phases 2 and 3 are repeated. PHASE 5 – SEDIMENTATION – Time without aeration when the water needs to clarify within the biological phase. MC PHASE 6 – EXTRACTION – The water is pumped out of the AP to the lower level by means of the pump P2=OUT (outflow). Extraction time is limited. PHASE 7 – RECYCLE – Excess active mud from the AP is recycled to the MC by means of the pump P3=REC. This process only takes place every N cycles and for a very short period of time (when necessary). In the event of small inflows (<10 to 15% of the AP volume), controlling is performed in economy mode. This additionally reduces the time of the blower’s functioning as well as energy consumption.
Municipal wastewater purifying plants from 500 to 2000 PE
Municipal wastewater purifying plant 2000 PE SLUDGE TRAP VOLUMEN:108.000 [l] SHAFT DN1000 ELEKTRIC RAKE WITH SCREW COMPACTOR
OUT
IN PRWE MECHANICAL STAGE VOLUMEN:45.000 [l] MECHANICAL CHAMBER WITH PUMP VOLUMEN:62.000 [l]
PUMP
AERATION CHAMBER WITH TUBE DIFUZORS VOLUMEN:215.000 [l]
Mechanical stage – the SP35 spiral sieve The spiral sieve is used to purify coarse particles from waste water. Level switch
Spiral sieve
Intercepting grid
Collecting container for solid particles
Concrete canal Adjustable sieve leg
Advantages of the rotary sieve: • Simple and inexpensive removal of coarse particles from waste water • Compact structure made of stainless steel • Clogging of the sieve is impossible • Removal of solid particles directly into the container • Installation either inside or outside the facility (additional heating required in case of external installation) Dimensions of the concrete canal for installation: • Depth 600 mm ±10 mm • Width 330 mm +30 mm
Technical data for the SP35 rotary sieve • Average flow of 18 l/min • Particle permeability ranging from 3 to 6 mm (depending on the sieve installed) • Electrical power 1.5kW (400 V, 50 Hz) • Safety switch for emergency stop • Level switch for turn-on in case of increased inflow of water to the sieve • Slant in installation 350 • Total length of the set-up sieve app. 4,850 mm • Total height of the set-up sieve above the concrete panel app. 3,060 mm • Total width of the set-up sieve app. 520 mm
www.roto-group.eu | info@roto.si | tel: +386 (0)2 52 52 249
Execution options for deep entrenchments When there is more than 60 cm of soil above the tank, we recommend the following:
Galvanised steel rings These are intended to reinforce the purifying plant.
Inspection chamber An inspection chamber measuring 800 mm in diameter enables easier purifying plant maintenance.
Analyser for SBR Basic characteristics of the analyser The battery-powered analyser is intended to upgrade the SBR purifying plants and makes the following measurements: • Measuring dissolved oxygen in water • Temperature measuring • Level meter – control over the amount of water • Measuring pH • Data review possible from any personal computer or mobile telephone • Data storage on server • Battery-operated All measurements are made periodically. Periods can be adjusted (factory-set value is 15 minutes).
References
The Cerklje Military Air Base – Slovenia
ROTO Murska Sobota, SLOVENIA Tel: +386 2 52 52 249 Fax: +386 2 52 52 171 info@roto.si www.roto.si
The Dakar Elementary School – Senegal – Africa
ROTO GRAD Ivanić Grad, CROATIA Tel: ++385 1 28 30 404 Fax: ++385 1 28 30 402 dora@roto-grad.t-com.hr
Apartments – Plougasnou – France
ROTO Alibunar Alibunar, SERBIA Tel: +381(0)11 364 16 90 Mob: +381(0)63 206 212 alibunar@roto.si
ROTO M Vinica, MACEDONIA Tel: +389 71 304 671 Fax: +389 3 33 63 516 rotomvinica@yahoo.com
www.roto-group.eu | info@roto.si | tel: +386 (0)2 52 52 249