Containerized Biological Treatment Unit-MBBR

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Containerized Biological Treatment Unit-MBBR

GENERAL PRINCIPAL

In collaboration with Biowater Technology AS we provide containerized solutions for the wastewater treatment that use the advanced technologies CFIC® (Continuous Flow Inter-mittent Cleaning) or CFAS® (Combined Fixed-Film Activated Sludge) with biofilm carriers,

aeration, retention sieves, mixing tanks as well as any tertiary treatment or additional equipment to suit the design.The above technologies are advanced high rate wastewater treatment processes that utilize free-floating media to carry active biomass in an attached form biofilm, while the Activated Sludge process supplements the amount of biomass in a suspended form. These technologies operate as a hybrid reactor by combining simultaneously the attached growth process and suspended growth process and require less energy than traditional MBBR processes.All reactors in our plants are filled with bio-carriers which are non-clogging and have very high ef-fective surface-area rate. The specific area provided by the bio-carriers used is 850 m2/m3. On these carriers (moving media) the active microorganisms are grown and attached in the form of a bio-film. At the same time an amount of biomass exists in all bio-reactors in the form of suspended solids and is usually referred as MLSS (Mixed Liquor Suspended Solids). It is the net total of all active Biomass (microorganisms) that contributes to the high rate biodegradation of this process used in our Bio-Plants.In the aerobic tank the bio-carriers are kept in continuous motion with the use of air (bubbles), which is diffused through fine or medium air diffusers at the bottom of the reactors and also provides the required oxygen for the formation and growth of the microorganisms in order to consume the or-ganic pollutants inside the reactor. In the anoxic tank (dinitrification process) the bio-carriers are kept in continues motion, via a submersible low speed mixer which is operating under a protective grid in

Biowater’s proprietary CFIC® is the next genera-tion MBBR biofilm technology that offers indus-try-leading performance compared to widely used Activated Sludge and MBBR solutions. The small footprint, combined with Biowater’s ap-proach to process design makes this far more

versatile than existing solutions, making it very suitable for a wide range of existing WWTP.

The CFIC® (Continuous Flow Intermittent Cleaning)

Biological sludgeSludge liquor

Was

h w

ater

Con

cent

rate

Primary sludge

Influent

Primary treatment

Wash water treatment

MF or UF membranes

CFIC® biofilm reactors

Effluent

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How it works

CFIC® reactor contains highly packed biofilm carriers to a degree (typi-

cally 90-99% bulk volumetric fill) that little move-ment of the carriers occurs in the reactor during normal operation.Microorganisms in the biofilm that attach on the

surface of the carriers take up pollutants as food for growth.The CFIC® process has continuous inflow to the bioreactor and intermittent cleaning, using influ-ent wastewater, which removes excess biomass (sludge) from the biofilm carriers.

The CFAS® (Combined F ixed-Film Activated Sludge)

The Biowater CFAS® (IFAS) utilizes the ben-efit of a traditional activated sludge pro-cess combined with a biological fixed-film

system to create a highly efficient waste-water treatment plant in a much smaller footprint.

The process begins with the introduction of polyethylene biomass carriers into the activated sludge. The activated sludge removes the majority of the BOD while the biofilm is allowed to grow in the protected biomass carrier. The biomass in turn oxidizes the ammonia. The Biowater CFAS® (IFAS) is par-ticularly well suited for retrofitting existing activated sludge plants to add nitrification as well as increasing the BOD removal in the same tank. The Biowater CFAS® IFAS is also perfect for use in new construction and prefab-ricated containerized units.

How it works

Removal of BOD/COD

BOD/COD Separation

Removal of BOD/COD+Nitrogen

BOD/COD SeparationNitrification

Pre-Denitrification-removal of BOD/COD+Nitrogen BOD/COD Nitrification SeparationPre-ON

Pre-/post-Denitrification-removal of COD/BOD+Nitrogen

BOD/COD NitrificationPre-ON SeparationPost-ON

RAS WAS

WASRAS

RAS

RAS

WAS

WAS

CFAS ® (IFAS) typical flow diagrams

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• Very Small Foot-Print Area – In the same tank can be treated double capacity com-pared to Activated Sludge process

• Suitable for both domestic and industrial wastewater applications

• High-Rate Bio-degradation• Great flexibility in system capacity increas-

es due to Low Hydraulic Retention Times (HRT)

• Very Compact design and robust operation• Self regulating biofilm ensures stable treat-

ment under variable loads – No clogging

KEY FEATURES & BENEFITSA number of benefits derive from the use of CFIC®

& CFAS® process in the UW Tech Bio-Plants:

THE NEW UW-TECH’S CONTAINERIZED BIOLOGICAL TREATMENT UNIT

UW-Tech provides a wide range of container-ized biological treatment units (UW-BOX) start-ing from 20m3/d up to 400m3/d (depending of the effluent requirements). This unit is the main treatment part of an integrated Waste Water Treatment Plant (WWTP).

There are two main models; the New model called UW-BOX-CFIC® that provides high BOD removal efficiency rates (more than 90% and more than 98% with the use of tertiary treatment) & the model UW-BOX-CFAS® which except the high BOD removal efficiency rates (more than 93%) includes full nitrification/de-nitrification

• Recycling of water and wastewater for re-use by using tertiary filtration (MF/UF) or sand-filter

• Fully automatic operation with remote moni-toring is possible (Minimum Attendance)

• Low energy requirements and low opera-tion cost

• Excellent Treatment Efficiency and Effluent Quality

• Odor Free, Clog free, quick start up

process (with 1 addi-tional compartment) and optional chemical phosphorus removal.All models can be

transported by standard road-trucks or shipped inside ISO container in order to reach even the most distant and remote part of the world. This fact makes our Treatment Units the easiest and fastest way to implement a WWTP at any ter-rain and under any condition. Furthermore, can be equipped with Anti-frost pack (includes frost protection, heated engine-room, insulated and top-closed tanks). Standard in all models, the engine-room includes lockable doors for secu-rity reasons.

For bigger models an additional machine-room may be required (prefabricated or not) in order to install the air-blowers, the electrical switch board (MCC) and also to accommodate a small office for the operator and/or a storage area.The boxes can be combined (working in paral-lel treatment lines) in order to provide technical

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UW-BOX ADVANTAGES

• Easy and low cost transportation all over the world• Easy installation (only a concrete base is required)• Minimum time for the plant implementation and quick system start-up• Very small footprint• Easy to be operated and maintained• Low energy requirements and low running cost• Fully automated system with PLC that could be monitored either locally through cable network

or radiomodem (Wi-Fi, Ethernet) or globally though internet (ADSL, GPRS/3G, Satellite). In all models a colored touch screen is included.

• High effluent quality• Attractive price

DESIGN PARAMETERS

INFLUENT CHARACTERIST ICS

Wastewater inflow 200 L/PE-day

BOD (Organic Carbon) 300 mg/L

Total Nitrogen(T-N) 50 mg/L

Total Phosphorus(T-P) 15 mg/L

Total Suspended Solids(TSS) 350 mg/L

EFFLUENT CHARACTERIST ICS

The New Model UW-BOX-CFIC® has the below effluent basic characteristics:

BOD (Organic Carbon) 25 mg/L

Total Suspended Solids (TSS) 30 mg/L

Total Phosphorus (T-P) - optional 2 mg/l

solutions in bigger WWTP plants. Alternatively, MBBR method can be implemented in prefabricated tanks that are assembled on site with minimum time and maximum quality, in cases of greater ca-pacities requirements.

Our Biological Treatment Unit has been designed with the below influent basic characteristics:

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The model UW-BOX-CFAS® has the below effluent basic characteristics:

BOD (Organic Carbon) 20 mg/L

Total Nitrogen (T-N) 15 mg/L

Total Suspended Solids (TSS) 30 mg/L

Total Phosphorus (T-P) - optional 2 mg/L

Below you can see the complete range of our Containerized Biological Treatment Units:

The UW-BOX-CFIC® STANDARD MODELS

ModelFlow Dimensions

m3/d length (m) width (m) height (m)

UW-CIFIC 100 100 6.06 2.4 2.70

UW-CIFIC 200 200 12.20 2.4 2.70

UW-CIFIC 300 300 12.20 2.4 2.70

UW-CIFIC 400 400 12.20 2.4 2.90

Note: Custom made models with different capacities and influent characteristics could be produced as special order. That is also valid for industrial wastewater plants.

The UW-BOX-Cfas® STANDARD MODELS

ModelFlow Dimensions

m3/d length (m) width (m) height (m)

UW-CIFAS 100 100 6.06 2.4 2.70

UW-CIFAS 200 200 12.20 2.4 2.70

UW-CIFAS 300 300 12.20 2.4 2.70

UW-CIFAS 400 400 12.20 2.4 2.90

Note: Dimensions and other technical data may be changed without our responsibility. Please con-tact us for any update.

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mixer

internal recycle

aerobic stage

anoxic pre-denitrification

effluent

waste sludge

clarifier DAF

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As a result, biomedia technolo-gy is considered more robust and efficient compared to the

conventional activate sludge technology.In the reactor we have carriers (or else floating media) where the effective mass of microorganisms called attached growth process is attached. At the same time into the reactor a mass of microorganisms is suspended called suspended growth pro-cess. All reactors in our plants are filled with bio-carriers which are non-clogging and have very high effective-surface area.In the anoxic tank (denitrification process) the bio-carriers are kept in continues mo-tion, via a submersible low speed mixer which is operating under a protective grid

Because of its robustness, its flexibility and its efficiency, the technologies CFIC® & CFAS® can be used for both Domestic wastewater (e.g. Municipali-ties, hotels, house complexes, camps etc) and Industrial wastewater (food & drink industry, cosmetics, etc for details please contact us for consultation).

APPLICATIONS

Complementary equipment for a complete WWTP

The UW-Tech’s Biological Treatment Unit (UW-BOX) is part of an integrated Treatment Facility com-monly referred to as Waste Water Treatment Plant (WWTP).In order to have a complete WWTP some additional equipment maybe needed:

• A Pretreatment Stage including coarse (10-40mm) following by a fine (5-6 mm) screening, grit-sand and grease removal. A compact prefabricated unit is recommended for this application.

• Equalization tank (prefabricated or concrete) with feeding submersible sewage pumps (sub-mersible mixer might be advisable) and/or air diffusers.

• Sludge storage tank (prefabricated or concrete) or Containerized Sludge Dewatering Unit (de-canter or screw press and sludge floculator) and Sludge thickener.

• Tertiary treatment with chlorination and optional tertiary filtration (a clean water storage tank for water reuse might be advisable)

in order to protect contact with the media (bio-carri-ers). In the aerobic tank (nitrification process) the car-riers are kept in continues motion with the use of air (bubbles), which is diffused through fine or medium air diffusers at the bottom of the reactors and expe-dites the formation and growth of the microorganisms in order to consume the organic pollutants inside the reactor.

Notice: All the above treatment stages and facilities should be designed and dimensioned by qualified designer engineers.

• For bigger models might be required an additional room (prefabricated or not – see above reference). Please consult our local distributor for further details.

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our officesHead Office:UW Tech GmbHNeckarstrasse 55 | D-71334 | Waiblingen | Germany T +49 (30) 7151 97509-88 | F +49 (30) 7151 97509-89 VAT : DE 287008146. HRB : 741256info@uwtech-gmbh.de | www.uwtech-gmbh.de Contact person:Nikolaos Papasarafianos | Managing Director M +49 1522 7771999 | +30 690 7771999

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