WASTE WATERTREATMENTPLANTS FOR MUNICIPALITY

, ISO 9001

SBR20 - 400 PU

ROTO, European manufacturerwith tradition and expertise

ROTO PURIFYING PLANTIS THE RIGHT DECISION

Roto is a European manufacturer of plastic products with more than 40 years of experience. All products are the result of deve-lopment and cooperation of company engineers, institutes and precise work of more than 250 workers. ROTO is privately owned company with products in four European countries. With a deve-lopment center (from idea to the product), large production ca-pacities, a sales network, transport and service, ROTO is one of the leading companies in rotational moulding industry. The company is also certified according to ISO 9001 and ISO14000 and has recevied numerous international awards.

1. HIgH PURIFICATION CAPACITYROTO purifying plants operate safely and reliably, without any un-pleasant smell or noise. Moreover, they are not sensitive to tem-perature fluctuations in the environment. Waste water from toilets,bathrooms, kitchens and similar household sources of pollutionare purified to such extent that water can be safley released tosurface waters, or can be used for lawn and trees watering withadditional treatment. Purifying plants are constructed in accord-ance with standard SIST EN 12566-3 which is valid in EU (BOD 5<30mg/L ; COD <150 mg/L). In the tank we install different waste wa-ter cleaning technologies.

2. LOW OPERATION COSTSHigh level of economic and energy efficiency.

3. RELIAbILITY ANd TRUSTOver 20.000 purifying plants, oil separators, septic tanks and rainwater tanks are installed in more than 50 countries around theworld. ROTO is a pioneer in the field of waste water treatment pro-duction in Europe. The Company also recevied the ZRMK Buildingand Civil Engineering Institute’s award, which is selected by expertsin civil engineering, additionally proving the products’ excellence.

4. CONTAINER SIzECompleted purifying plant can be delivered in containers. In 40 ft container we can fit a 50.000 L tank.

5. EU PROdUCTSPurifying plants are manufactured and cetificated in EU countries.

6. PLUg ANd PLAYA ready to use product, easy and quick installation in few days.Suitable for remote installation without infrastructure.

7. UNdERgROUNd INSTALLATIONAll our waste water plants are designed for undergroundinstallation. In this way they do not use space above ground level.

8. MOdULAR bUILdINgA possibility to add capacity and to move the plant to anotherlocation.

9. TANk IS MAdE FROM POLYETHILENPolyethilen can be 100 % recycled, has good mechanicalresistance. Tanks are produced in one part and are 100%watertight.

10. ExCELLENT SERvICE ANd TECHNICAL SUPPORTQuick supply, maintainance, start-up and servicing performed byexpert staff. Servicing by the ROTO company comprises the check-ing of mechanical parts in a plant, general cleaning services andoperating situation control, as well as the testing of all functionsperformed by individual plant parts. The user is instructed aboutmaintainance and the correct use of treatment plant. We can alsoorganise or supervise the installation of the plant.

1. Waste water flows into the treatment plant and iscollected in the first chamber-mud collector. Retentiontime is needed for the mud to settle down.

2. The first valve is activated for pumping of waste waterfrom mud collector to aeration chamber.

3. In the aeration chamber air supply is conductedthrough compressor and air membrane on thebottom of the chamber. The computer regulatesintervals and quantities of air through magnetic valve.Aeration cycles are determined by the size of purifyingplant.

4. After aeration, sedimentation phase begins. In thisprocess purified water is separated from thesediment. In this phase the compressor is turned off.

5. Purified water is pumped out from aeration chamberwith a compressor.

6. The sediment in aeration chamber is pumped back tothe mud collector. The entire process is repeatedseveral times a day.

SBR TECHNOLOGY:

The process is managed by computer which is installed into the special box. Softwear is stearing 4 magnetic valves. Each valve has specific function:

1. Pumping water from mud collector to the aerator.2. Aeration in aeration chamber.3. Pumping of purified water from aeration chamber to

the outflow.4. Pumping sediment mud from aerator chamber back

to the mud collector

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SbRtechnology

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ModelVolume

(L)Dimensions of purifying plant (mm) Diameter of

pipe (mm)A (L)* B (W)* Hmin Hmax Hin Hout

20 PU 12000 3760 2310 2350 2830 2120 2080 160

30 PU 12000 3760 2310 2350 2830 2120 2080 160

40 PU 20000 6280 2310 2350 2830 2120 2080 160

50 PU 20000 6280 2310 2350 2830 2120 2080 160

75 PU 30000 8800 2310 2350 2830 2120 2080 160

100 PU 40000 11320 2310 2350 2830 2080 2040 200

200 PU 2x30000 8800 2310 2350 2830 2080 2040 200

300 PU 2x40000 11320 2310 2350 2830 2080 2040 200

400 PU 2x50000 13840 2310 2350 2830 2080 2040 200

*dimension are depending on layout (configuration of tanks)

3WATER - ROTO sewage treatment plants for municipalities |2 | WATER - ROTO sewage treatment plants for municipalities

www.roto.bg www.roto.bg

SBR+500 - 2000 PU

SBR+ TECHNOLOGY:

MBBR technology or SBR+ employs thousands of polyethylene biofilm carriers operating in mixed motion within an aerated wastewater treatment basin. Eachindividual biocarrier increases productivity through providing protected surface area to support the growth ofheterotrophic and autotrophic bacteria within its cells. It is this high-density population of bacteria that achieves high-rate biodegradation within the system, while offering process reliability and ease of operation at the same time. This technology provides cost-effective treatment withminimal maintenance since MBBR processes self-main-tain an optimum level of productive biofilm. Additionally, the biofilm attached to the mobile biocarriers within the system automatically responds to load fluctuations.

ADvANTAGES OF wASTE wATER TREATmENT PLANT 500-2000 PU:

• Fully automated.• Quality pre cleaning.• Recovering of data.• Cost effective.• Easy and quick installation.

ADvANTAGES OF mBBR TECHNOLOGY:

• Increased cleaning efficiency.• Smaller volumes of tanks.• High resistance to hydraulic and organic load.• Good separation of suspended solids.• No feedback sludge.• Independent control of retention times.

Model Volume

(L)Dimensions of purifying plant (mm) Diameter of

pipe (mm)A (L)* B (W)* Hmin Hmax Hin Hout

500 PU 2x50000 13840 2310 2350 2830 2080 2040 200

1000 PU 4x50000 13840 2310 2350 2830 2080 2040 200

1500 PU 6x50000 13840 2310 2350 2830 2080 2040 200

2000 PU 8x50000 13840 2310 2350 2830 2080 2040 200

*dimension are depending on layout (configuration of tanks)

5WATER - ROTO sewage treatment plants for municipalities |

COmPONENTS OF wASTE wATER PURIFYING PLANT 500-2000 PU

1. Mechanical stage- fine bar screen2. Water flow gauge3. Oil and grease trap4. Retention chamber5. SBR reactor6. Mud chamber7. Sampling shaft

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Mechanical stage is the first step in process of cleaning. Bar screen, which is installed in shaft removes solid particles greater than 5 mm. Bar screen can be remove for cleaning with electrical hoist.Waste water then flows into chamber which separates oil andgrease from the rest of the water.

Normaly retention chamber is in the same tank as oil and grease trap. In process of sedimentation, soild particles settle on the bottom of the tank and the rest of the water is pumped into SBR reactor.

SBR reactor is equiped with air blowers for constant concentration of oxygen in water. In MBBR technology biofilm carriers are added to SBR reactor. Secundary sedimentation takes place afteraeration. Clean water from surface is pumped out to sampling shaft, drainage,.... the remaining of the sludge is pumped bact to the retention chamber.

The purifying plant is controled by a computer, which regulates all functions.

mECHANICAL STAGE -THE SP35 SPIRAL SIEvE

The spiral sieve is used to purify coarse particlesfrom waste water.

Techincal data for the SP35 rotary sieve:• Average flow of 18 l/min• Particle permeability ranging from 3 to 6 mm

(depending on the sieve installation)• Electrical power 1.5W (400V, 50Hz)• 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: app 520 mm

Advantages of the rotary sieve:• Simple and inexpensive removal of coarse particles from waste water• Compact structure made of stainless steel• Clogging of ieve is impossible• Removal of solid particles directly into the container• Installation either inside or outside the facility

(additional heating requited in case of external installation)

Collectiong container forsolid particles

Level switch

Intercepting grid

Adjustable sieve leg

Concrete canal

Spiral sieve

4 | WATER - ROTO sewage treatment plants for municipalities

www.roto.bg www.roto.bg

SCADA APLICATION REMOTE CONTROL OF WASTEWATER TREATMENT PLANT

REFERENCES:Sewer systems (vacuum, dry and standard pumping stations).Waste water purifying plants (SBR, MBR, MBBR,...).Sludge treatment (stabilization, dehidration,...).Water supply systems (water collectors, irrigation systems,...).

6 | WATER - ROTO sewage treatment plants for municipalities

SCADA SUPPORTS m2m COmmUNICATIONSFOR DATA TRANSFERING:• Operating mode,• SCADA control center (facilities can be integrated in the WEB SCADA control),• Possibility to set up new center or integration of existing control center, whichsupports standard communication protocols for communication with dislocatedfacilities,

• Remote control and acces can be reach via internet, smart phones, Ipads, and othermobile devices,

• Communication between locations.

ADvANTAGES OF CONTROLLING:• Adaptability for clients requierements and the type of sewage water treatment

plant,• Allows remote control with changing parameters (ipad, iphone, smart phones,...).• integrated PLC-s with a touch sensitive color LCD screen,• option to change parameters of sewage water treatment plant on panel and viaremote device.

SCADA APPLICATIONS• Reporting of errors on your mobile device,• Possibility to check history of errors,• Saving of information on SD card.

ADvANTAGES OF SCADA APPLICATIONS:• Visual display of current process and hisory of

operating,• on/off possiblity of all devices from SCADA,• remote settings of all parameters on waste

water purifying plant,• automatic creation of reports,• remote control for maintance stuff,• alarm filtering by day, user name and type of

alarm (for later analysis and systemdebugging),

• review of working hours, number of starts,consumption, service intervals.

www.roto.bg

www.roto.bg

ROTO-BGBlagoevgrad, Bulgaria

www.roto.bgoffice@roto.bgrotobg@abv.bg

tel: +359 (0) 89 70 56 460+359 (0) 89 36 60 757

ROTO ProductionROTO distributors