Waste Treatment Technologies

What Waste Treatment Technologies does

Waste Treatment Technologies (WTT) is a Netherlands-based engineering and technology company founded in 1996 that designs, builds, and services organic waste treatment facilities for municipal governments and commercial waste operators worldwide. The company's core technology stack centers on biological treatment systems including in-vessel composting tunnels, dry and wet anaerobic digestion (AD), biogas upgrading, air treatment and odor abatement systems, and a proprietary heat recovery technology branded Heat Harvest. All process control is managed through a proprietary SCADA system developed in-house, which enables batch tracking, permit compliance reporting, and remote monitoring. WTT has delivered 160+ projects and built more than 1,300 composting tunnels across 25+ years of operation.

The company's revenue model combines one-time project sales (turnkey design and build contracts, retrofits, and upgrades) with recurring service revenue from Service Level Agreements covering 50+ facilities worldwide. WTT operates an enterprise field sales motion with Sales Engineers managing technical tenders and coordinating directly between sales, engineering, and project execution teams. Customer segments are primarily municipal governments and waste management companies, with a secondary industrial segment for heat offtake applications. Marketing is conducted through major industry trade shows (IFAT, Ecomondo), detailed case studies demonstrating quantifiable outcomes, and direct relationship management.

WTT is privately held by Dutch private equity firm Convent Capital (acquired 2013) and operates as the technology and knowledge arm of Convertus Group, which was formed in 2019 through the merger of WTT and Renewi Canada. The group expanded its North American footprint in June 2025 with the acquisition of AIM Group of Companies. WTT maintains wholly-owned subsidiaries in Australia, Canada, China, and Germany, with its headquarters in Oldenzaal, Netherlands.

Name

Waste Treatment Technologies

Legal name

Waste Treatment Technologies

Website

https://wtt.nl

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

Waste Treatment Technologies (WTT) designs, builds, and services turnkey organic waste treatment facilities for municipalities and waste operators globally, with proprietary composting, anaerobic digestion, and heat recovery technologies delivered under its Convent Capital-backed ownership.

Ownership category

akta.pro rank

Product category

Organic Waste Treatment Technology

NAICS

Waste Treatment and Disposal (5622), Waste Treatment and Disposal (56221)

SIC

Refuse Systems (4953)

akta.pro primary industry

WtE Plant Development, EPC & O&M Services (Project delivery and operations) (EUAAAKAK)

akta.pro secondary industry

Subtitle: Waste Treatment & Disposal — Sub-industries (L4) (EUAIACAA)

Keywords

• Organic waste treatment
• Anaerobic digestion systems
• In-vessel composting
• Biogas production
• Air treatment systems

Headquarters

HQ city

Oldenzaal

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Revenue model

1. Design and Build Projects: Turnkey design and build projects for organic waste treatment facilities. WTT designs, supplies, installs, and commissions complete facilities including process equipment, instruments, and automation systems.
2. Customer Support Services: Ongoing services for existing facilities including spare parts management, asset maintenance, process optimization, biological services, remote process support, plant audits, process audits, training, and helpdesk/emergency support. Provides high-level customer support at more than 50 facilities worldwide.
3. Service Level Agreements: Continuous support agreements including standard support and SLA Plus packages with additional services like plant audits, remote process support, process audits, alert services, helpdesk and emergency support.
4. Upgrades and Retrofits: Future-proofing upgrades for existing facilities including revamps to improve performance, increase uptime, and reduce operational costs.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Waste Treatment Technologies (WTT) designs, builds, and services turnkey organic waste treatment facilities worldwide, including in-vessel composting tunnels, dry and wet anaerobic digestion systems, biogas upgrading, air/odour treatment, and heat harvest technology. The company delivers complete process design, engineering, equipment manufacturing, installation, commissioning, and ongoing customer support under Service Level Agreements, with operations controlled by a proprietary in-house SCADA system.

Product overview

Waste Treatment Technologies (WTT) offers a comprehensive portfolio of organic waste treatment solutions centered around four core technology platforms: Composting Technology (in-vessel tunnel systems), Anaerobic Digestion (AD) Technology, Air Treatment Systems, and Heat Harvest Technology. These core products are delivered through a Design + Build services model and supported by Customer Support Services covering more than 50 facilities worldwide. The company also provides proprietary SCADA control systems for process automation. Recent additions to the portfolio include mobile solutions (Transportable Biogas Plant and Transportable Composter) for flexible testing, and the Spigot Sweeper for automated tunnel maintenance. All solutions are designed for source-separated municipal organic waste and aim to maximize nutrient re-use and renewable energy production while reducing greenhouse gas emissions.

Differentiator

Problem solved

Functional benefit

Brands

• Heat Harvest: A technology developed by WTT to maximize useful thermal energy production from composting metabolic processes. The system captures residual process heat and makes it available for other processes, including heating buildings, pre-heating process air, or selling energy to neighboring operations.
• Spigot Sweeper

Products and services

• Design + Build Services Turnkey design and build projects for organic waste treatment facilities, focused on source-separated municipal organic waste. Includes process design, engineering, testing, installation, training, and service. Features 3D modeling and standard modular skids for efficient delivery. Targeted at municipalities, waste management companies, and industrial clients.
• Customer Support Services High-level customer support at more than 50 facilities worldwide, focusing on continuous improvement and optimization. Services include spare parts management, asset maintenance, process optimization, odor performance, biological service, energy performance, heat harvest, and innovation. Delivered via Service Level Agreements (Standard Support and SLA Plus) for owners and operators of WTT-built facilities.
• Composting Technology In-vessel composting technology using individually controlled tunnels with forced aeration to process organic waste into compost. Features fully automated process control with adaptable parameters for different waste streams and seasonal fluctuations. Modular construction enables efficient installation and simplified commissioning. Over 1,300 tunnels built to date.
• Anaerobic Digestion (AD) Biogas production technology using anaerobic digestion of organic waste. Available in dry AD and wet AD configurations, or combinations. Produces biogas that can be converted to renewable heat and power via CHP units, or upgraded to biomethane/RNG for vehicle fuel or natural gas grid injection.
• Air Treatment Systems Odour abatement systems including two-stage acid scrubbers (first removes dust, then ammonia), biofilters using organic materials to absorb and degrade odorous compounds, chemical scrubbers, humidification, dust removal, heat exchangers, cooling towers, and booster fans. Designed to meet stringent odour control criteria and maintain facilities in constant negative pressure.
• Heat Harvest Technology Technology to capture and maximize useful thermal energy from composting metabolic processes. Heat can be used on-site for heating buildings and pre-heating process air, or sold to neighboring operations (greenhouses, factories, heating networks). Produced in partnership with GTL Europe. Can capture up to 2,600 MJ per ton of feedstock.
• SCADA Control System Proprietary supervisory control and data acquisition (SCADA) system for monitoring and controlling waste treatment processes. Allows operators to set process parameters for different waste streams and seasonal fluctuations. Features batch tracking, reporting for permit compliance, energy management, and remote monitoring capabilities. Developed and maintained in-house by WTT's software engineering team.
• Transportable Biogas Plant (TBP) Mobile dry anaerobic digestion unit that produces biogas on site, convertible to renewable heat and power via CHP. Handles fluctuating waste volumes, adapts to different feedstocks, and reduces need for costly transport. Currently operating as proof of concept in Nagpur, India. Designed for municipalities, waste operators, and industrial users evaluating AD technology at site.
• Transportable Composter (TC) Mobile, fully equipped composting solution for direct testing and optimization at customer sites without permanent infrastructure. Features hydraulic roof for loading, robust aeration system, and intelligent process control. Used for feedstock trials, demonstration, and validating process adjustments.
• Spigot Sweeper Automated tunnel cleaning device for composting facilities. Brushes trenches, removes debris, and reopens spigot perforations automatically in a single pass. Reduces cleaning time from several hours to less than one hour per tunnel. Improves airflow, process stability, and reduces operator exposure to heat and humidity.

Quantifiable outcome

• Leachate disposal cost reduction of 90%
• +9 more outcomes

Named customers11 records

Segments3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Four partnerships are on record, tiered major and core.

• AIM Group of CompaniesmajorStrategic or Co-development Partner · 1 June 2025Convertus Group announced successful acquisition of AIM Group of Companies in June 2025, expanding the Convertus/WTT group's North American operations.
• Convertus GroupcoreStrategic or Co-development Partner · 1 January 2019Created in 2019 by merger of Renewi Canada and WTT. Convertus focuses on operating facilities in North America while WTT delivers knowledge, technology, and customer support worldwide.
• Orgaworld (later Renewi)majorStrategic or Co-development Partner · 1 January 2014First Canadian project partnership. Together awarded contract to Design Build and Operate an organic waste facility for the City of Surrey, British Columbia - the first closed-loop organic waste facility in Surrey.
• GTL EuropecoreTechnology or IntegrationExclusive production partner for WTT Heat Harvest technology. GTL Europe produces specialized heat exchangers and smart energy management systems for the Heat Harvest solution.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Renewi plc: Dutch/Belgian waste management operator and historical partner of WTT (Orgaworld/Renewi Canada merged into Convertus); operates organic waste treatment facilities and is both a customer/channel partner and a competitor for municipal waste contracts.
• Orgaworld / Renewi Canada (now Convertus): WTT's sister company within the Convertus Group; operates organic waste treatment facilities in North America (Surrey, Nanaimo, Halifax) using WTT technology. Closest operational comparable and proof point for WTT's technology platform.
• Anaergia Inc. Canadian-headquartered AD and biogas upgrading technology provider; comparable to WTT on anaerobic digestion and organic waste treatment project delivery, with similar North American positioning via Convertus/Canada overlap.
• Komptech GmbH: Austrian manufacturer of composting and mechanical-biological waste treatment equipment; competes with WTT on composting technology and tunnel systems, particularly in DACH and CEE markets.
• Haase Energietechnik: German manufacturer of in-vessel composting tunnels and AD systems; one of WTT's closest direct competitors in the in-vessel composting niche across Europe.
• Eggersmann Group (UNTHA): German engineering group offering composting, anaerobic digestion, and mechanical waste treatment systems; directly comparable EPC + equipment competitor to WTT in the German-speaking market and Central Europe.

Broad incumbents

• Veolia Environment: Global environmental services giant operating waste collection, treatment, and energy recovery facilities worldwide; competes with WTT on large municipal organic waste tenders (e.g., Veolia Southwark is itself a WTT customer) and offers overlapping EPC + operating capabilities at much larger scale.
• Hitachi Zosen Inova: Established EPC contractor for waste-to-energy and biogas plants globally, including anaerobic digestion and biogas upgrading; competes head-to-head with WTT on large turnkey organic waste and WtE tenders, particularly in Europe and North America.
• Suez (Suez S.A.): Major waste and water services company with organic waste treatment and biogas operations across Europe and internationally; directly comparable to WTT on municipal organic waste and AD projects but with a far broader service portfolio.

Emerging players

• Bright Renewables (Bright Biomethane): Dutch biomethane upgrading specialist that frequently pairs with AD plant builders like WTT; comparable as a complementary/competing technology supplier in the biogas value chain that WTT serves.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/share
• Facebookfacebook.com/WTTNetherlands
• LinkedInlinkedin.com/company/wastetreatmenttechnology

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Waste Treatment Technologies