SERECO_EN

ACTIVITIES

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1.- INDUSTRIAL ACTIVITIES WITH MOBILE PLANTS

We provide a wide range of the most technologically advanced services in a very wide range of sectors: Main sectors:

� Tunnel boring companies that generate bentonite. � Industrial sludges. � Mining industries. � Paper industries. � Chemical and Petrochemical industries. � Drinking- and Waste water treatment plants etc.

INTRODUCTION

Shidgounwww.shidgoun.com

Contact us:

Middle East Regional Director

Shima Shadrooh

[email protected][email protected]

M +34 695 990 775

Salvador Ruíz Saldaña

[email protected]

T +34 916 31 47 57M +34 619 315 791

ACTIVITIES

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A Preliminary study is carried out by technicians of Sereco according to the location and nature of the waste. The available space for the treatment development is also considered, as well as every information regarding the particular project.

PreliminaryTechnical

Studies

Sludge extraction

from collectors, slag ponds

decanters,digestors,

etc…

Preparation ofthe

product to be

treated : flocculation, coagulation,

blending..

Treatmentaccording

to technical

studies :decantation,

centrifugation,

pressure filteretc

waste upgranding

and/ordisposal

of end-waste

Study Extraction Conditioning TreatmentFinal

Management

PreliminaryTechnical

Studies

Sludge extraction



etc…

Preparation ofthe

product to be


blending..

Treatmentaccording

to technical


centrifugation,

pressure filteretc

waste upgranding

and/ordisposal

of end-waste

Study Extraction Conditioning Treatment

Sludge extraction



etc…

Preparation ofthe

product to be


blending..

Treatmentaccording

to technical


centrifugation,

pressure filteretc

waste upgranding

and/ordisposal

of end-waste

Study Extraction Conditioning TreatmentFinal

Management

The global management of outputs and resulting waste is always considered within every study or project. As a result, we have equipment and means for neutralization of effluent in order to return water of sufficient quality to the head of the process for its re-use. For the solid wastes we consider the transport and disposal in controlled spillways or their delivery to an authorized company for waste management.

Our main activities are:

• Filtering

• Centrifugation

• Thermal Desortion

• Industrial Cleaning

• ATEX Dredging

WORKING METHOD

“Reference company for sludge treatment using mobile pressure filters”

FILTERING

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� The main activity of Sereco

Gestión, S.L. is the filtration of every sort of sludge using pressure filters.

� We are a reference company

for sludge treatment due to the high quality of "on site" service and our response capability at any location through our mobile equipment, along with the most advanced technology for collection, pre-treatment, filtration and dewatering.

� Our filters work on the most

important public sector works, accompanying national and international operators, as well as large industries.

� Capable of treating sludge

from bentonite special foundations, thermal power, nuclear, mining, sewage sludge ...

� The most advanced

technology in „on site treatment“

Leadership

THE SOLUTION TO SLUDGE DEWATERING

“Reference company for sludge treatment using mobile pressure filters”

FILTERING

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� Mobile plants easily

transportable by road or sea and in rapid response.

� Extraction and filtration:

Pumping- and Dosing state of the art equipment. Maximum flow and performance (between 30 and 400 m3/day) per plant.

� Waste: minimization,

easily transported, cost reduction for transport, quality of the filtrate.

� Water: maximum possible

recovery. Reliable recovery teams, easy care and maintenance. Removal of 60% of humidity. Innovation and Technology available by water treatment by works

� Detailed study of customer

needs.

� Support on all works from our Purchasing, Technical Assistance, Administration, management, Quality and Environment and Health and Safety Departments.

THE SOLUTION TO SLUDGE DEWATERING

Innovation

“Soil recovery and its later reuse eliminates transport costs for its external treatment completely”

CENTRIFUGATION

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� This method, together with other extraction and filtration equipments of Sereco, is the best possible solution to sludge treatment and cleaning. The customer needs are fully met.

� These units comprise a

compact structure and are easily adaptable to already existing installations making them a practical and economic solution for the substitution of damaged or broken installations.

� They are the ideal solution for

emergency land or marine treatments where spills of mixtures or liquids susceptible to separation density are involved.

� Our operators and technicians

are highly qualified and experienced in the sector.

Answer

SEPARATION IN PHASES PRINCIPLE

“Soil recovery and its later reuse eliminates transport costs for its external treatment completely”

CENTRIFUGATION

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� The force used by our centrifugation equipments (rotation speed 3.500 r.p.m) allows gravity separation into two or even three-phase components of the mixture, depending on the density of the elements.

� The lack of water vapour

and the need to reach the widest possible separation is solved with our mobile boilers.

� Polyelectrolyte dosing

units and additives tanks to separate those elements emulsified in the aqueous phase of the waste.

� Our filtration and

centrifugation equip-ments require less area than other methods of implementation, thus minimizing the impact on the landscape.

SEPARATION IN PHASES PRINCIPLE

Process

“We have wide experience and history of effective management in the sector”

THERMAL DESORTION

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� Decontamination of soil after potentially polluting activities has become important as a result of customer awareness and legislation that promotes ecological and sustainable growth.

� Expansion and moderni-

zation come together to respond to this new framework.

� From our experience in

collaborating with other companies, Sereco is able to offer a final treatment for dry material resulting from the separation and dewatering of contami-nated soils.

� “On site” treatment with mobile desorption plants offers a real and economically viable solution– to to the problems of soil contamination (oil, mercury, etc ...)

� Soil structure remains intact , without ecological alteration, after the

desorption of organic contaminants.

Ecology

SOIL RECOVERY COMMITMENT


THERMAL DESORTION

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� Especially used in areas

contaminated by solid state hydro-carbons and/or mer-cury.

� Increasing soil temperature

from 90 ºC to 540 ºC causes pollutants with a low boiling point to be vaporized to a gaseous state thus sepa-rating them from the earth.

� We apply further emission

treatment for volatilized con-taminants.

� Sereco provides appropriate

solutions for “on site” reco-very of soil contaminants in response to a lack of ade-quate facilities.

� Soil recovery and its later

reuse avoid transport costs for its external treatment.

� We are able to deal with high concentrations of pollutants and to offer prior attention to all our decontamination projects.

Desortion

SOIL RECOVERY COMMITMENT


INDUSTRIAL CLEANING

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� Our main objective is to

provide the industrial cleaning sector with the innovation of a modern enterprise while impro-ving services through the experience of our highly trained team.

� Our equipments are all properly certified and approved for transport (No 494/T/RNP/TV and 359/TP/CV) and for waste management (No 566/RT/RNP/CV And 541/RT/RTP/CV.)

� Our fields of action are within the

Oil Industry :

• Cleaning of ponds • Silos and pipes • Treatment plants, pits,

manholes and collectors. • Towers and tanks of fuel,

oil, grease, solvents ... • Ship holds. • …

Equipment and Management

SERECO WORKING FOR INDUSTRY


INDUSTRIAL CLEANING

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� Our fleet and equipment are very large and modern.

� The application of recent

advances in technology means our equipment works effectively, quickly, econo-mically and in an envi-ronmentally friendly way thus allowing us to offer the best balance between quality service and market price

� Great suction and discharge

equipment with capacities between 20 m3 and 4 m3 and liquid ring depressants capable of providing large volumes of suction (400-2165 m3/ h).

� Low- and High pressure pum-

ping groups (250–750 kg/cm2)

� Our ADR certified tanks complete the cleaning process undertaking the transport of dangerous goods by road.

� We use innovative and

effective technology in order to look after the environment.

� All our work is carried out on

the basis of a high degree of experience and training, providing a maximum guarantee for our customers.


Specialized machinery

“Non abrasive cleaning process with soft dry ice accelerated at a supersonic speed.”

CO2 BLAST CLEANING

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CO2 blasting works because of three primary factors: pellet kinetic energy, thermal shock effect and thermal-kinetic effect. Cold Jet optimizes blast performance for each application by combining these forces and adjusting:

� compressed air pressure � blast nozzle type (velocity

distribution) � CO2 pellet size and density � pellet mass rate and flux

density (particles per unit area per second)

The Cold Jet process incorporates high velocity (supersonic) nozzles for surface preparation and coating removal applications. Since kinetic impact force is a product of the pellet mass and velocity over time, the Cold Jet delivery system achieves the greatest impact force possible from a solid CO2 pellet by propelling the pellets to the highest velocities attainable in the blasting industry.

Even at high impact velocities and direct head-on impact angles, the kinetic effect of solid CO2 pellets is minimal when compared to other media (grit, sand, PMB). This is due to the relative softness of a solid CO2, which is not as dense and hard, as


Specialized machinery

Pellet Kinetic Energy pecialized machinery


CO2 BLAST CLEANING

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other projectile media. Also, the pellet changes phase from a solid to a gas almost instantaneously upon impact, which effectively provides an almost nonexistent coefficient of restitution in the impact equation. Very little impact energy is transferred into the coating or substrate, so the Cold Jet blasting process is considered to be nonabrasive.

Instantaneous sublimation (phase change from solid to gas) of CO2 pellet upon impact absorbs maximum heat from the very thin top layer of surface coating or contaminant. Maximum heat is absorbed due to latent heat of sublimation. The very rapid transfer of heat into the pellet from the coating top layer creates an extremely large temperature differential between successive micro-layers within the coating. This sharp thermal gradient produces localized high shear stresses between the micro-layers. The shear stresses produced are also dependent upon the coating thermal conductivity and thermal coefficient of expansion/contraction, as well as the thermal mass of the underlying substrate. The high shear produced over a very brief expanse of time causes rapid micro-crack propagation between the layers leading to

contamination and/or coating final bond failure at the surface of the substrate.


Thermal Shock Effect pecialized machinery


CO2 BLAST CLEANING

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The combined impact energy dissipation and extremely rapid heat transfer between the pellet and the surface cause instantaneous sublimation of the solid CO2 into gas. The gas expands to nearly 800 times the volume of the pellet in a few milliseconds in what is effectively a "Micro-explosion" at the point of impact. The "Micro-explosion," as the pellet changes to gas, is further enhanced for lifting thermally-fractured coating particles from the substrate. This is because of the pellet's lack of rebound energy, which tends to distribute its mass along the surface during the impact. The CO2 gas expands outward along the surface and its resulting "explosion shock front" effectively provides an area of high pressure focused between the surface and the thermally fractured coating particles. This results in a very efficient lifting force to carry the particles away from the surface.


Thermal-Kinetic Effect pecialized machinery

“Dewatering systems are essential to allow excavations under dry conditions.”

DEWATERING

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Dewatering in construction, is the removal or draining groundwater or surface water from a construction side, by pumping. On a construction site, this dewatering may be implemented before subsurface excavation for foundation, shoring or cellar space to lower the water table. This involves frequently the use of submersible “dewatering” pumps, or application of vacuum to wellpoints.

Wellpoint dewatering systems enable to lower the groundwater table adequately for deep and large construction sites. It has proven to be a very flexible system. The water from high permeable soils is pumped from wellpoints, installed along the trench of the site. The wellpoints are jetted and spaced to obtain an efficient drawdown against lowest capacity. The wellpoints with integral strainers are joined to transparent flexible hoses, which are connected

by quick release couplers to the ring main header pipeline. Wellpoint dewatering is done either by gravity or vacuum. The Wellpoint dewatering system utilizes vacuum piston pumps or self priming, vacuum assisted centrifugal pumps.

SERECO WORKING FOR CONSTRUCTION

Solutions for foundation pecialized machinery

Wellpoint

“Dewatering systems are essential to allow excavations under dry conditions.”

DEWATERING

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Deep well typically consists of a borehole fitted with a slotted liner and an electric submersible pump. As water is pumped from a deep well, a hydraulic gradient is formed and water flows into the well forming a cone of depression around the well in which there is a little or no water remaining in the pore spaces of the surrounding soil. Deep wells work best in soils with a permeability of k_ 1x10 -3 to 1x10 105 m/s.; the amount of drawdown that a well can achieve is limited only by the size of the pump and the soils permeability.

Deep Well

SERECO WORKING FOR CONSTRUCTION

“We believe in sustainable growth and development by minimizing the environmental impact”

ATEX DREDGING

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� Sereco commitment to Quality and Environment has led us to work with a sustainable growth and development policy aiming to minimize environmental impact while increasing worker safety during extraction work.

� A result of this policy is our

ATEX sludge extraction ma-chine, a pioneer in Spain.

� Our ecological dredger, which is

remote controlled, allows us to empty the sludge from the bottom of the ponds resulting from industry, mining, marinas, canals, etc. The waste is pumped to the head of our facilities to be treated in the most quiet and clean way.

� Its high extraction capacity (63

m3/h) makes it the ideal accessory for our filtration and dewatering equipment and, together, they form a team capable of dealing with the most difficult jobs, reliably, safely and economically.

� The operation produces no turbidity or dirt in the water and makes this

system ideal for work in areas where great care is needed.

Environmental Protection

INNOVATION AND SUSTAINABILITY

BY SLUDGE EXTRACTION

“We believe in sustainable growth and development by minimizing the environmental impact”

ATEX DREDGING

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� Our system involves the use

of a floating pontoon whose articulated arm can extract sludge without the need to empty and stop the activity of the collector.

� Sereco commitment to

Health and Safety at work and the radio controlled operation allow work to be undertaken in a potentially explosive atmosphere. Our dredge is ATEX certified (Protocol No. LOM 09 ATEX 8049 X) for Zone I classified location.

� Workers do no have to enter

the area to carry out the work so reducing potential hazards and danger.

� Avoiding risks along with the

high extraction capacity have reduced the working times and the extraction costs considerably.

� As hard and solidified as the sludge may be, our extractor will be able to

remove it and to transport it easily without producing and damage.

INNOVATION AND SUSTAINABILITY

BY SLUDGE EXTRACTION

ATEX Security

ACTIVITIES

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2.- TREATMENT PLANT FOR CONSTRUCTION AND

DEMOLITION WASTE.

This plant was built on a 150,000 m2 area that had been used as a landfill for 15 years. It is located in Nules, Castellón (Spain). The treatment capacity for excavation and demolition residues of this plant is of 150 T/hour.

ACTIVITIES

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It occupies an area of 5,000 m2 and consists of a crushing system and a system of screens, cyclones, magnetic separators, etc. that separates the waste into the following fractions: • Paper, wood, cartons and

small plastics can be used as fuel thanks to their high calorific value.

• Ferrous Metals are reused in

melting industries. • The stones, concrete, sand, etc., which are separated du to their size, can be

reused as construction material.

ACTIVITIES

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3.- GLOBAL SOLUTIONS

Sometimes when customers have concrete environmental problems, they look for a company that provides a global solution. This is what Sereco can do. SERECO has developed some programs and projects to improve R & D + according to our clients. For this purpose we have developed agreements and links with various universities and companies, as described in the overview. Our experience in coordinating interdisciplinary teams makes us a reliable partner when it comes to carrying out comprehensive and complex environmental projects. Sereco works with some of the most representative persons, companies and institutions in the world of consulting, engineering, environment, mediation of CO2, energy and innovation. With over twenty years of experience, these companies have always had, as engine of performance, the pursuit of excellence, the diversification of its services and meeting all the challenges that their customers demand. We have four business lines structured according to the specialty of each of the companies:

– Consultancy for Environment and Sustainability – Climate Change and Emissions Trading – Industrial Engineering and Energy – Contaminated Soil and Environmental Infrastructure

SERECO combines the offer of comprehensive services, through the union of the various capabilities of these companies, with specialization, defined as a deep understanding of work within each area of activity. Only with the best professionals in different sectors we can offer a guarantee of quality in a global offering for our customers. Today it is impossible to conceive of corporate governance and public administration without environmental considerations. SERECO and his partner companies and associates are specialized in these two variables that converge on the idea of Sustainable Development. With this we help our customers at three levels:

ACTIVITIES

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� Design strategies � Improve operational management � Solve specific problems

SERECO_EN

Documents

abrasive cleaning

industrial

external treatment

mobile pressure

high extraction

environmental

solid co2

dry conditions