CATALOGUE BOIS - ANGLAIS

SUMMARY

COHIN ENVIRONNEMENT 1

OUR AREAS OF EXPERTISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OUR ACTIVITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OUR TECHNOLOGIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
OUR ACHIEVEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
AN ENVIRONMENTAL APPROACH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

THE UNIBIOCELL® PROCESS 9

OUR PROVEN TECHNOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
HOW THE PROCESS WORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SIPHON FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
FOOTPRINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

WASTE WATER BOX 19

PRESENTATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
OPERATION OF A UNIBIOCELL® WWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
OUR SOLUTION FOR ISOLATED AREAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SERVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

WASTE WATER BOX « Wooden Solution » 27

PRESENTATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
CONFIGURATION WITH A TECHNICAL ROOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
ARCHITECTURAL AND LANDSCAPE PLANS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Wastewater, a major challenge for the future of water in the world !



COHIN ENVIRONNEMENT

OUR AREAS OF EXPERTISE

URBAN WASTEWATER SLUDGE TREATMENT INDUSTRIAL WATER ECONOMY
TREATMENT FACILITY WASTEWATER
- Wastewater treatment TREATMENT FACILITY - Reuse
- Municipalities – Villages facility - Recycling
- Hamlets – Housing estates - Lagoons, Microstation - Agri-food - Rainwater recovery
- Campsites – Holiday - Draining materials - Beverage industry
iiiresorts – Golf courses - Cosmetics
- Hotel complexes - Waste treatment
- Temporary and/or mobile - Papermaking, cardboard
iiiinstallations -Truck washing stations,
- Living areas iiicisterns, skips, lorries
-Careening area

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OUR ACTIVITIES

MAINTENANCE AND OPERATION OF A TREATMENT UNIT

COHIN ENVIRONNEMENT has all the skills necessary to operate treatment facilities.
We o er our operating expertise and technical assistance to manufacturers and communities :

Process optimisation
Operational assistance
Emergency troubleshooting
Preventive and curative equipment maintenance

DESIGN AND CONSTRUCTION OF A TREATMENT FACILITY

COHIN ENVIRONNEMENT o ers turnkey installations from design to commissioning including assembly
and sta training.
We are involved in the local economy by using local partners and subcontractors for structural work and
roads and networks.

CONSULTING, AUDITS AND TECHNICAL EXPERTISE

COHIN ENVIRONNEMENT engineers can provide consulting services. They support their clients in
planning their building or renovation projects.
COHIN ENVIRONNEMENT supports you throughout the project :

Technical and financial audits
Operating diagnostics
Feasibility studies

4

OUR TECHNOLOGIES

Pre-treatment

Disinfection Physical-chemical treatment

Biological processes

Electro-coagulation Liquid/solid separation

Filtration Sludge treatment

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INTERNATIONAL PROJECTS

Over 100 references across the world

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AN ENVIRONMENTAL APPROACH

COHIN ENVIRONNEMENT IS COMMITTED...

… TO A TERRITORIAL AND LOCAL CIRCULAR SOCIETAL ECONOMY
“ Our company’s approach is to move towards an economy embracing functionality, to avoid any waste and to no longer produce waste products of any
kind, but to generate by-products, or secondary products, which will be reused in other production processes.
By favouring the use of sustainable and energy-e cient products, COHIN ENVIRONNEMENT combines the best possible technologies in a chain so that
they can be assembled using waste as much as possible, thus becoming reusable resources, favouring recycling, energy recovery, and aiming at a global
positive resource system.
The ecological charter of our company is to look for circular green industries encompassing water, soil and waste savings as well as global energy
management. These eco-technological systems are inseparable from the creation of eco-industries and the construction of sustainable cities where each
person becomes an eco-citizen. ”
… TO A COLLABORATIVE ECONOMY
“ Nowadays, the need to get closer and share has become paramount. Multisector collaboration improves the e iciency of companies and reduces their
environmental impact.
The creation of a sustanable sharing economy depends on the behaviour of the various actors and users. COHIN ENVIRONNEMENT is committed to
transmitting and sharing its know-how through economic and learning partnerships to meet the needs of the ecological transition. ”

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AN ENVIRONMENTAL APPROACH

BIOLOGICAL TERRITORIAL AND LOCAL CIRCULAR ECONOMY INDUSTRIAL
LIFECYCLE LIFECYCLE

Fighting against mortality due to unsanitary water NATURAL ENVIRONMENT Discharging compliant water into the natural
Restoring the natural capital of regions, land, air, water Recharging of groundwater
Improving the living conditions of su ering Composting, natural fertiliser
populations AGRICULTURE AQUACULTURE Water reuse
Sustainable consumption hunting and fishing Recycling and reuse
Social responsibility Development of territorial and local industries
RAW MATERIALS Local partners
Rebalancing ecosystems Preventive and curative maintenance
TRANSFORMATION ASSEMBLY
Fighting against the desertification of
populations through the development of DISTRIBUTION SALE
economic activities
National concept idendification OPERATION PRODUCTION

Local industries and communities

COLLECTION LIFECYCLE OF AN USE OF A
AND TREATMENT ECO-SOCIO-DESIGN PURIFICATION
OF WASTEWATER
PROCESS

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100% organic sequential and continuous process in a single basin.

Carried out by

THE UNIBIOCELL® PROCESS

OUR PROVEN TECHNOLOGY

The company’s innovative approach has made it possible to develop a 100% biological purification process in a single basin : UniBioCell®.
Our technology makes it possible to respond to the wastewater treatment needs of communities and industries.
Treatment facilities using the UniBioCell® process operate all over the world, the oldest being over 30 years old.
The superiority of the UniBioCell® process over the traditional Activated Sludge process consists in :
The compactness of the wastewater treatment facility.
The simplicity and exibility of operation and maintenance.
Elimination of problems with rising sludge.
Elimination of operating problems and costs linked to the clarifier.
High level of e icient treatment compliant with the most severe wastewater standards.
Purification yields above 90% in terms of the DCO, DBO 5 and MES parameters.

Step 1 Step 2 Step 3
Supply and ventilation Supply and decantation Supply, extraction and rejection

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THE UNIBIOCELL® PROCESS

COHIN ENVIRONNEMENT, ONE PROCESS, ONE SOLUTION : UNIBIOCELL®

The UniBioCell® process developed by COHIN ENVIRONNEMENT is a sequential and continuous biological process. It allows carrying out three stages
of treatment in a single basin. The configuration of the UniBioCell® process favours projects with high compactness or a modular concept. Odour and
noise pollution are easily controlled and the production of sludge is reduced.

Step 1 Step 2
Supply and ventilation Supply and decantation
A A

AC
B

A : Supply Step 3
B : Discharge of treated water Supply, extraction and discharge
C : Sludge extraxction

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HOW THE PROCESS WORKS

STEP 1 STEP 2 STEP 3
Supply and ventilation : Supply and decantation : Supply, discharge of treated
water and sludge extraction :
SUPPLY SUPPLY
The supply of wastewater is continuous. The supply of wastewater is continuous. SUPPLY
The supply of wastewater is continuous.
BIOLOGICAL TREATMENT DECANTATION OF SLUDGE
Less pollution by aerobic bacteria : Ventilation is stopped. SLUDGE EXTRACTION
Separation of bacterial ocs, suspensions and Extraction of excess sludge by pumping.
Anabolic reaction treated water. Excess sludge extraction time :
Endogenous respiration Transition from an aerobic environment to an ≤ than the e uent discharge time.
Nitrification anoxic environment.
Reduction of carbon and nitrogen load DISCHARGE OF TREATED WATER
DENITRIFICATION Discharge of the treated e uent by the siphon.
VENTILATION Development of anoxic bacteria by consuming End of cycle, return to step 1.
The oxygen supply is controlled by a Redox or pollution present in wastewater.
oxygen sensor. An anoxic phase can be added by Transformation of nitrates into gaseous
installing a stirrer to allow advanced nitrogen. NO3 -> N2.
denitrification.

Ventilation time Decantation time Drain time less than
over 1 hour/cycle 1 hour/cycle 1 hour/cycle
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SIPHON FUNCTION

1 Basin filling and ventilation phase 2 Ventilation

Increase in water level Solenoid valve is closed Solenoid valve is closed

6 Discharge stop phase and cycle renewal 3 End of the decantation phase and siphon activation

Solenoid valve is closed Solenoid valve is open Evacuation of
trapped air

Treated
e uent

5 Siphon deactivation phase 4 E uent discharge phase

Solenoid valve is open Air aspiration Solenoid valve is closed

Treated Treated
e uent e uent

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SIPHON FUNCTION

1 - Situation of the siphon when the 2 - Situation of the siphon during 3 - Situation of the siphon at the end
water level in the basin is low : the ventilation phase : of decantation and the start of the
discharge phase :
The water level is always above the siphon The stopper created by the air trapped in the
drain level. siphon prevents water from entering. The air in the siphon is replaced by the treated
Floating matter and sludge are kept in the Floating matter is again brought into contact water by opening the solenoid valve.
basin to prevent the departure of sludge and with the biomass which degrades it, eventually
suspended matter. creating hydrolysis of the fats. Floating matter remain on the surface while
the settled sludge remains at the bottom of
the basin. The treated water is drained until
the water level returns to the low level.

High Fats
level
Floating matter Low Fats High High
100 mm level Sludge level level
Low Low
level level

Sludge

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BENEFITS ADVANTAGES OF THE SIPHON

ADVANTAGES OF THE PROCESS A large volume of water can be evacuated quickly without
disturbing the sludge bed.
Automated operation by level sensors. No submerged moving part or parts requiring intervention.
Reliable system requiring little maintenance. No pump for the evacuation of treated water.
Possibility of performing extensive nitrification and Flow using gravity.
denitrification of the e uent. Evacuation without risk of capturing oating matter.
Low sludge production compared to conventional activated
sludge facilities : up to 30% less.
Absence of odour due to the creation of an anaerobic zone.
No management of sludge recirculation.
No significant rise in sludge during low load periods due to
uncontrolled denitrification at the inlet of the clarifier.
Small surface area of the treatment facilities.
Reduction of the civil engineering requirements during
construction.

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FOOTPRINT

Very compact installations with an average footprint of 0.3 m ⁄ PE
Examples of projects using the UniBioCell® technology :

Location Population equivalent Daily ow DBO5 charge Footprint (water + Average
(french standards) sludge + premises) m /PE
Thailand 1 800 kg/day 0,08
Morocco 67 000 PE 10 000 m /day 400 kg/day 5 300 m 0,33
Doubs 240 kg/day 2 200 m 0,20
Corsica 6 700 PE 1 000 m /day 210 kg/day 800 m 0,34
Gironde 303 kg/day 1 200 m 0,16
Alpes-Maritimes 4 000 PE 1 200 m /day 72 kg/day 400 m 0,38
Corsica (South) 450 m 0,56
3 500 PE 525 m /day 8 kg/day 0,30
85 m
2 500 PE 83 m /day

1 200 PE 280 m /day

150 PE 19 m /day
Average footprint

17

18

Compact, removable and mobile wastewater treatment facility.



WASTE WATER BOX

PRESENTATION

Wastewater treatment facilities of the WWB range are compact and removable systems for the treatment of domestic or
industrial wastewater using treatment processes adapted to the needs (UniBioCell®, biodisc, MBBR, MBR, etc.)
The range includes models from one hundred to several thousand Population Equivalents (according to the standard sizing
standards in France).
The station is supplied with an electrical cabinet located in the technical compartment ensuring automated operation of the
treatment facility. The cabinet includes a programmable logic controller and a supervision screen.
WWB manufacturing solutions include a tank made of either :

Wood Concrete Fiberglass steel / Polyester

Container Polyester

APPLICATIONS Urban e uents Sludge

Industrial e uents

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OPERATION OF A UNIBIOCELL® WWB

Maintenance is easier thanks to the basin access platform. Operation is reduced to the maintenance of the 2 pieces of
electromechanical equipment (blower and pump), cleaning the instruments and visual inspection of the facility.
The following actions are needed :
Weekly :

Checking the operation of the facility (cycles, ventilation, levels...)
Visual inspection of the basin and equipment
Checking sludge removal and treated water draining
Monthly :
Inspection of process equipment
Checking valve operation
Cleaning and calibration of instruments
Biannually :
Engine maintenance, lubrification and oil levels
Visuel inspection of cables, connections, structure, geomembrane

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OUR SOLUTION FOR ISOLATED AREAS SOLUTION
CLASSIC SOLUTION

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SERVICES

Service and maintenance contracts are available when the facility is supplied.
Operating contract

On-site control of the facility operation
Equipment maintenance
Operation report
Collection of samples for analysis
Preventive maintenance contract
Continuous remote management
Management of technical reports and maintenance operations
Preventive maintenance of the installation
Annual review of operation and compliance
Technical risk insurance contract
Technical risk insurance contract covers material damage to the WASTE WATER BOX :

Structure and structural reinforcement
Basin watertightness

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OPTIONS SELF-MONITORING

TANK ACCESSORIES This equipment allows easy, fast and e icient monitoring of the
purification performance of your wastewater treatment facility :
The tanks of the di erent WWB ranges and models can accommodate o Flow meter
options allowing easier operation or better integration into your o Counting channel
environment : o Automatic sampler
o Online analysers (pH, temperature, turbidity, oxygen, redox...)
Complete walkway (made of galvanised steel, aluminum, wood or a
composite material)
Lifting equipment (jib crane, winch, lifting beam)
Cover (sliding tarpaulin exible and removable or rigid and xed)
Extreme environment system (insulation for high/low temperature,
modular building with reversible air conditioning, shading structure)

In order to o er you a customised turnkey solution, we can integrate various options
for a complete treatment of your e uents.

PRE-TRAITEMENT / PRIMARY TREATMENT BIOLOGICAL TREATMENT

Depending on the hydraulic loads and incoming pollutants, the To help you remain in control of your process and allow optimised
e uents may require additional treatment/equipment before the pollution control and therefore easier operation, additional or
secondary treatment : replacement systems are available :
o Lifting station
o Bu er basin Turbine ventilation / fine bubbles / medium bubbles
o Degreaser Neutralisation
o Grit chamber Denitrification / dephosphatation
o Floatation system Complementary treatment (anti-foam injection, nutrients, ferric
o Compactor/Bagger in addition to the rotary sieve chloride…)

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OPTIONS SLUDGE TREATMENT

UTILITIES As part of treatment essential for any wastewater treatment facility,
we o er a wide choice of equipment and technology for treating
As well as the Waste Water Box, we also o er various systems to faci- sludge and storing it in order to transform it into valuable products :
litate its operation or installation in an isolated area :
Using gravity : Filter bag, filter skip, drying bed, planted beds, static
Technical premises thickener / decanting tank
Laboratory premises Mechanical : Drip table, belt filter, screw press, filter press,
Unit autonomy using a generator or renewable energy such as centrifuge
solar panels Accessories : Treatment of sludge (made polymer, liming),
Soft tarpaulin / storage tank conveyor screw, storage tank / skip

TERTIARY TREATMENT SPARE PARTS / CONSUMABLES / EQUIPMENT
We also o er additional equipment for the maintenance and moni-
This equipment allows extensive water treatment in order to toring of your wastewater treatment facility :
discharge it into a sensitive environment or to reuse it. Air treat-
ment is also possible to protect the operator and structures from Spare parts (for commissioning, start-up, emergency kit, after 2
the emanation of toxic or foul-smelling compounds (H2S, thiols, years of operation...)
ammonia...) : Consumables (filters, gaskets, reagents, bags...)
Fixed or portable analysis equipment (analysis and reagent kits,
Filtration: sand filter, zeolite, activated carbon – Drum filter cases and portable devices, tools and instruments, glassware...)
Disinfection using UV light or chlorination
Water pressure unit for the reuse of water for irrigation or as 206
service water
Air treatment – deodorizsation by adsorption using activated
carbon

WOODEN

The wood used comes from sustainably managed forests with
PEFC chain of custody certi cate and a CTB B+ quality
certi cate.



WASTE WATER BOX « Wooden Solution »

PRESENTATION

The « Wooden Solution » Waste Water Box is a construction incorporating a reinforced concrete base, a wooden structure and
waterproo ng using a geomembrane. A building of the same design integrates all the process, pre-treatment, tertiary treatment,
sludge treatment and storage equipment. This design makes it possible to greatly reduce visual, sound and olfactory nuisances.

BENEFITS

Low-carbon construction
High landscape and architectural integration
Standardised dimensions for an optimised delivery time
Excellent corrosion resistance in marine or tropical environments

COMPACT ONE-PIECE, MODULAR AND DETACHABLE FACILITIES

One-piece facilities : The Waste Water Box « Wooden Solution » can be completely dismantled and reassembled. For
the second and third new installation, new wooden structures can be installed on the preserved reinforced concrete
base.

Compactness of the facility : The Waste Water Box « Wooden Solution » incorporates the UniBioCell® process that
considerably reduces the footprint of the facility.

Modular and scalable facilities : The design of the Waste Water Box integrates the UniBioCell® process and responds
easily to the problem of seasonal variation of population equivalents and also to a change in
treatment capacity in terms of volume or population equivalents.

Transport, export et assembly : The construction of the Waste Water Box « Wooden Solution » is compatible with
standard road transport and maritime containers. Wastewater treatment facilities can be operational between 3 and 9
months depending on the treatment capacity.

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CONFIGURATION WITH A TECHNICAL ROOM

30

CONFIGURATION WITH A TECHNICAL ROOM Water trap (water supply) Treated water discharge siphon

Tertiary skid
Screen

Lifting station Disc di users
Blower
Sludge extraction pump
31

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ARCHITECTURAL AND LANDSCAPE PLANS

3237

ACHITECTURAL AND LANDSCAPE PLANS

34

OUR Moving from a «single-use» society to a more circular and
VISION sustainable business model.

An environmental approach

Our approach is to move towards an economy embracing functionality, to avoid any
waste and to no longer produce waste products of any kind, but to generate by-pro-
ducts, or secondary products, which will be reused in other production processes. By
favouring the use of sustainable and energy-e cient products, we combine the best
possible technologies in a chain so that they can be assembled using waste as much
as possible, thus becoming reusable resources, favouring recycling, energy recovery,
and aiming at a global positive resource system. Our ecological charter is to look for
circular green industries encompassing water, soil and waste savings as well as
global energy management.

“ „The environment, a major challenge for the 21st century.

" THINK GLOBALLY, ACT LOCALLY "
René DUBOS

PROJECT LOCATIONS IN FRANCE AND ABROAD

HEAD OFFICE
CURRENT LOCATIONS
UPCOMING LOCATIONS

VERSAILLES TUNIS

CASABLANCA
ESSAOUIRA

DAKAR

ABIDJAN Tél : +33 (0) 1 84 73 21 21 [email protected]
Fax : +33 (0) 1 84 73 21 22 www.cohin-environnement.com
Head o ice :
6 rue de la muette
ÉCARDENVILLE SUR EURE
27940 CLEF Vallée d’Eure

FRANCE