Essde Gmbh

What Essde Gmbh does

EssDe GmbH is a privately held Swiss engineering company (GmbH, headquartered in Gommiswald, canton of St. Gallen) that develops and licenses biological wastewater treatment technologies for municipal and industrial treatment plants. Its core portfolio centers on two registered proprietary processes: S::Select®, which converts conventional activated sludge into aerobic granular sludge (AGS) using a hydrocyclone-based high-shear selection step combined with optimized biological conditions, and EssDe®, a sidestream deammonification (partial nitritation + anammox) process that the company claims reduces energy consumption for nitrogen removal by approximately 60% versus conventional nitrification/denitrification without external carbon dosing. The product line has been extended with EssDe-M, which brings deammonification into the mainstream flow, and S::Control®, a control-layer offering associated with the S::Select process.

Technically, the company reports quantifiable outcomes including sludge settling rates of 3.0-8.0 m/h versus 0.5-1.0 m/h in conventional systems, a 2-3x treatment capacity uplift after retrofit, and improved sludge dewatering characteristics. The go-to-market is direct sales-led, with implementation requiring specialized engineering engagement between EssDe's team and the plant operator's technical staff to retrofit existing activated sludge tanks without major civil works. Pricing is not publicly disclosed and the model is effectively project-based one-time licensing/system sale, with contact-based pricing. Customer concentration is heavily skewed toward municipal wastewater utilities in Switzerland and German-speaking Europe, with an industrial wastewater segment (food processing, breweries, dairies) identified but less developed, and 35+ plant references cited cumulatively.

Commercially, EssDe operates as a small specialist firm with 1-10 employees, no disclosed funding rounds, no parent company, and no public financials. Recent activity is documented through a 2022 municipal plant contract, a 2024 industry working-group formation, ongoing technical publication of process characteristics, and continued product communication into 2026. The company does not disclose AI/ML capabilities; its differentiation rests on proprietary biological processes, registered trademarks, regulatory alignment with tightening European nitrogen and energy-efficiency standards, and the engineering complexity required to retrofit existing plants.

Name

Essde Gmbh

Legal name

EssDe GmbH

Website

https://essde.com

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

EssDe GmbH is a Swiss engineering firm that licenses proprietary biological wastewater treatment processes — S::Select® (aerobic granular sludge conversion) and EssDe® (sidestream deammonification) — to municipal and industrial treatment plants in Switzerland and the wider German-speaking region, targeting energy and nitrogen-removal efficiency upgrades.

Ownership category

akta.pro rank

Product category

Biological Wastewater Treatment

NAICS

Sewage Treatment Facilities (221320), Waste Treatment and Disposal (5622)

SIC

Sanitary Services (4950)

akta.pro primary industry

Advanced/Nutrient Removal (BNR/ENR: N, P) (EUANADAC)

akta.pro secondary industry

Industrial Wastewater & Effluent Treatment Services (BPALAHAD)

Keywords

• Wastewater treatment technology
• Granular sludge processes
• Deammonification systems
• Biological nitrogen removal
• Activated sludge conversion

Headquarters

HQ city

Gommiswald

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Wastewater Treatment Technology Systems: Sale and implementation of biological treatment systems including S::Select and deammonification processes for converting wastewater treatment plants to more efficient granular sludge technology

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Essde GmbH develops and implements proprietary biological wastewater treatment technologies, specifically the S::Select process for converting conventional activated sludge systems into aerobic granular sludge (AGS) systems and the EssDe deammonification process for energy-efficient nitrogen removal in sidestream treatment. The company sells and engineers these treatment process upgrades to municipal and industrial wastewater treatment plants, addressing bulking sludge problems, capacity constraints, and nitrogen discharge challenges.

Product overview

Essde GmbH offers a dual-product system for wastewater treatment using granular sludge technology. The core portfolio consists of S::Select®, which transforms conventional activated sludge systems into aerobic granular sludge (AGS) systems, and EssDe®, which enables energy-efficient nitrogen removal via deammonification in sidestream treatment. The EssDe-M extension brings deammonification capabilities to mainstream wastewater treatment. Together, these products address bulking sludge problems, improve treatment capacity by factors of 2-3, and reduce energy consumption by 60% compared to conventional nitrification/denitrification processes.

Differentiator

Problem solved

Functional benefit

Brands

• S::Select: Process that converts conventional activated sludge into aerobic granular sludge (AGS) to improve settling behavior, increase purification performance, and resolve bulking sludge problems.
• EssDe

Products and services

• EssDe Deammonification process for sidestream wastewater treatment that enables highly efficient nitrogen elimination through anaerobic ammonium oxidation (anammox) combined with partial nitritation. Converts ammonium-rich sidestream wastewater into nitrogen gas with 60% less energy consumption than conventional nitrification/denitrification, without additional carbon dosing. Targeted at municipal and industrial wastewater treatment plant operators.
• S::Select Biological treatment process that converts conventional suspended activated sludge flocs into aerobic granular sludge (AGS). Improves settling behavior, enhances treatment performance, and resolves bulking sludge problems by forming granules through hydrocyclone shear at high intensity combined with optimally adjusted biological conditions. Targeted at wastewater treatment plant operators seeking to increase capacity by a factor of 2-3 without major structural construction.
• EssDe-M Mainstream application of EssDe's deammonification technology that enables energy-autark wastewater treatment plants when combined with the sidestream process, significantly improving overall plant energy efficiency by applying deammonification to the main wastewater flow rather than only the sidestream.

Quantifiable outcome

• 60% less energy consumption compared to conventional nitrification/denitrification processes
• +2 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Kläranlage (Grenze St. Gallen/Thurgau)coreStrategic or Co-development Partner · 14 October 2022A municipal wastewater treatment plant located at the border of the cantons of St. Gallen and Thurgau in Switzerland awarded EssDe GmbH the contract for upgrading their activated sludge system. The conversion from conventional to granular sludge will provide additional capacity and improved treatment performance. Implementation follows the company's standard approach without major structural construction work.

Scale indicators1 record

Recent moves1 record

Expansion highlights5 records

Broad incumbents

• Veolia Water Technologies: Veolia is a global water and wastewater giant offering comprehensive solutions including biological treatment, membrane systems, and digital services. Comparable to EssDe in serving municipal and industrial wastewater treatment customers, though as a broad incumbent with full-portfolio offerings rather than a niche AGS specialist.
• Suez Water Technologies: Suez provides water and wastewater treatment solutions globally across municipal and industrial markets. Comparable to EssDe in addressing municipal wastewater treatment needs, though as a broad incumbent with established biofilm and biological treatment offerings rather than a niche AGS specialist.
• Xylem: Xylem is a major water technology company offering pumps, treatment systems, and digital solutions for municipal water and wastewater. Comparable to EssDe in serving municipal wastewater utilities, though as a broad incumbent with diverse portfolio rather than a focused AGS specialist.

Direct peers

• Huber SE: Huber SE is a German water and wastewater technology company offering sludge treatment, screening, and biological treatment solutions. Comparable to EssDe as a German-speaking European specialist serving municipal WWT plants with advanced process upgrades.
• Aqua-Aerobic Systems: Aqua-Aerobic Systems provides advanced wastewater treatment solutions including biological nutrient removal and aeration systems for municipal plants. Comparable to EssDe in serving municipal WWT operators seeking improved nitrogen removal and treatment efficiency.
• WABAG: WABAG is a global water treatment specialist offering municipal and industrial wastewater solutions including biological treatment retrofits. Comparable to EssDe in targeting municipal WWT plants with advanced biological processes and energy-efficient nitrogen removal.
• De Nora: De Nora provides electrochemical and biological water treatment technologies including applications for nitrogen removal and wastewater disinfection. Comparable to EssDe in addressing nutrient removal in wastewater through innovative biological and electrochemical processes.
• Nereda (Royal HaskoningDHV): Royal HaskoningDHV's Nereda is the most established commercial aerobic granular sludge (AGS) technology for wastewater treatment, directly competing with EssDe's S::Select process. Both convert conventional activated sludge to granular sludge for improved treatment and capacity, targeting the same municipal and industrial wastewater customers.
• AnoxKaldnes (Veolia): AnoxKaldnes, part of Veolia, specializes in biofilm-based biological wastewater treatment including MBBR and IFAS processes. Comparable to EssDe in providing advanced biological nitrogen removal solutions for municipal wastewater treatment plants.

Emerging players

• World Water Works: World Water Works specializes in advanced biological wastewater treatment including biological nutrient removal and sludge reduction technologies. Comparable to EssDe as a smaller specialist offering advanced biological treatment solutions for municipal and industrial wastewater customers.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights5 records

Customer concentration

• YouTubeyoutube.com/watch?v=GiSDKH9Ra4c&ab_channel=EssDeGmbH
• LinkedInlinkedin.com/company/essde-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Essde Gmbh