Our Profile

• Success in air pollution control since

• Specialist for odor removal in

- Waste water treatment

- Solid waste management

- Industries

• More than 1000 plants worldwide

• ISO-9001:2008

Success in air pollution control since 1986

Solid waste management

plants worldwide

Our Services

• Turn-key systems for air pollution control

• Consulting

• Design

• Engineering

• Project management

• Research and development

• Maintenance and spare parts

key systems for air pollution control

Our Solutions

• Biofilters

• Biotrickling filters

• Bioscrubbers

• Counter-current scrubbers

• Cross-flow scrubbers

• Multiventuri scrubbers

• Activated carbon filters

Our Customers… …

• Waste water treatment

• Waste treatment

• Composting

• Recycling

• Food processing

• Cigarette production

• Chemical industry

• Printed board production

• Biogas plants

… and their Problems

• Odour

• Inorganic acids

• Solvents

• Poisonous contaminants

• Dust

• Organic sulfur compounds

• Hydrogene sulphide

• Aerosoles

• Ammonia

Our Customers

• Bangladesh

• Bahrain

• Belgium

• China

• France

• Greece

• Deutschland

• Indonesia

• Italia

• Yemen

• Jordan

• Kazakhstan

• Croatia

• Malaysia

• Martinique

• Mexico

• Netherlands

• Norway

• Oman

• Austria

• Poland

• Romania

• Russia

• Saudi Arabia

Netherlands

Saudi Arabia

• Spain

• Singapore

• Slovakia

• Slovenia

• Switzerland

• Thailand

• Tunisia

• Turkey

• UAE

• UK

• Ukraine

• Vietnam

SolutionsBiofiltration

Biofiltration - Process

Removing of contaminants from the exhaust and

bio oxidation to carbon dioxide and water

Bacteria

Contaminants + O2

Removing of contaminants from the exhaust and

bio oxidation to carbon dioxide and water

Bacteria

Cell material + CO2 + H2O

Biofilter - Basic Flow Chart

Pump

Pre-scrubber

Fan

Support grid

Base filling

Main filling

Biofiltration – Advantages

• Low invest costs

• Low running costs

• Natural method

• Low water consumption

• Excellent odour removal

• Easy maintenance

• Self controlled

Biofilter - Pre-scrubberIntegrated air conditioning

Compact Biofilter - Pumping Station OmanStandard solution for small air flows

Pumping Station OmanStandard solution for small air flows

Covered BiofilterSolvent decomposition

Waste Water TreatmentInlet works (9.000 m³/h)

Waste Water TreatmentWWTP (2 x 14.000 m³/h)

Composting Plant MartiniqueBiofilter with integrated pre-scrubberscrubber

Waste TreatmentCovered biofilter with integrated preCovered biofilter with integrated pre-scrubber

Waste Water TreatmentWWTP in Poland (22.000 m³/h)

Composting PlantCovered biofilter (45.000 m³/h)

BiofilterComposting plant in France (82.500 500 m³/h)

Waste TreatmentCovered biofilter, Montpellier (180180.000 m³/h)

SolutionsChemical ScrubbingChemical Scrubbing

Chemical Scrubbing - Advantages

• Flexibility

• Low space demand

• High efficiency at high concentrations

• High buffer capacity

• No adaption time

• Full automatic operation

Advantages

High efficiency at high concentrations

Chemical Scrubber

2 NH3 + H2SO4

or

H2S + 2 NaOH

Na2S + 4 H2O2

or

Na2S + 4 NaOCl

(NH4)2SO4

Na2S + H2O

Na2SO4 + 4 H2O

Na2SO4 + 4 NaCl

Counter-current Scrubber

Clean air

Circulation system

Chemical

Spraying system

Waste air

Scrubber sump

Packing

Droplet separator

Counter-current ScrubberH2S removal at pumping station

Counter-current ScrubberPacked scrubber with biofilter for polishingPacked scrubber with biofilter for polishing

Counter-current ScrubberPacked scrubber as pre-treatment in front of a RTOtreatment in front of a RTO

Counter-current ScrubberScrubber housings designed for up to Scrubber housings designed for up to 90.000 m³/h

Counter-current ScrubberComposting plant

Counter-current ScrubberNH3 removal from sludge storageremoval from sludge storage

Chlorination ScrubberEmergency scrubber for chlorine storageEmergency scrubber for chlorine storage

3-stage Cross-flow Scrubber

Fan

Droplet separator

Scrubber sump

Circulation system

Clean air

Hydrogen peroxide

Packing

Spraying system

Waste air

Caustic sodaSoda

Sulfuric acid

3-stage Cross-flow Scrubber40.000 m³/h

3-stage Cross-flow ScrubberWaste air from WWTP (2 x 40.000 mm³/h)

3-stage Cross-flow ScrubberWaste air from WWTP (80.000 m³/h)

2-stage Cross-flow ScrubberWaste air from WWTP (75.000 m³/h)

2-stage Cross-flow Scrubber60.000 m³/h

SolutionsBiological oxidation(Biotrickling)Biological oxidation

Biological oxidation - Advantages

• Biological treatment

• High efficiency at high concentrations

• No consumables needed

• Automatic operation

• Natural method

• Easy maintenance

Advantages

High efficiency at high concentrations

Biotrickling PlantRemoval of H2S (3.000 ppm) at anaerobic sewage processppm) at anaerobic sewage process

Biotrickling Filter3-stage process

1. Biotrickling filter 2. Chemical Scrubber. Chemical Scrubber 3. Biofilter

SolutionsAdsorption - Activated CarbonActivated Carbon

Adsorption with Activated Carbon

• Low space demand

• High efficiency at high concentrations

• Automatic operation

• No adaption time

• Easy maintenance

• Mobile air treatment unit

Adsorption with Activated Carbon - Advantages

High efficiency at high concentrations

Adsorption - Activated CarbonContainer adsorber unit

Activated Carbon

Activated Carbon FilterFor small air volumes (4.000 m³/h)/h)

Activated Carbon FilterPolishing carbon filter

Activated Carbon FilterPolishing carbon filter

SolutionsMultiventuri ScrubberMultiventuri Scrubber

2-stage Multiventuri Scrubber

Cooling system

Cooling tower

Corrosion protection

Droplet separator

Fan

Clean air

Heat exchanger

Waste air

Multi Venturi

Scrubber sump

Recirculation pump

Biocide

Hydrogen sulphide

Packing

Spraying system

Multiventuri ScrubberRendering plant

Multiventuri ScrubberOutdoor installation

SolutionsSewage Sludge Drying PlantsSewage Sludge Drying Plants

Problems with Sludge Drying Plants

• High temperature

• Moist air

• Dust

• Odour

• Ammonia

Problems with Sludge Drying Plants

Solution

Multiventuri scrubber Fan Cooling scrubber

Biofilter

Waste air

Clean air

Cooling scrubber Heat exchanger Cooling tower

Complete Air Pollution Control Plant(55.000 m³/h)Complete Air Pollution Control Plant

Research & Development

• Complete pilot plant in 20“ container for tests

• Test evaluation / Protocol analysis

• Scrubbers with dosing station and integrated biofilter

• On the spot support

… to ensure to use the right plant

“ container for tests

Test evaluation / Protocol analysis

Scrubbers with dosing station and integrated biofilter

Tholander - Helping the world breath easily again

More than 1,000 references from a wide range of application areas around the

globe are testimony to the trust our satisfied customers have in us. Every hour, we

can clean more than 5 million m³ of waste air worldwide.

Helping the world breath easily again

references from a wide range of application areas around the

globe are testimony to the trust our satisfied customers have in us. Every hour, we

of waste air worldwide.

Weitere Infos unter:www.tholander.de