References

WWTP Leidsche Rijn, The Netherlands

Project aims

  • Expansion of WWTP Leidsche Rijn by closing surrounding WWTP’s Maarssenbroek and Maarssen
  • Removal solids from influent
  • Dewatering of captured solids
  • Long-term maintenance

Technical data

  • Removal efficiency 30%
  • Dewatering to 25% solids
  • Capacity 1850m3/h influent 2.3 t/d solids

Activities

  • Two Huber® drum screens modular
  • Two drain screens, two presses and transport screws (dewatering installations)
  • Container arrangement with three Dutch Spiral containers for storage and transport of dewatered sludge
  • A new building for the entire installation
  • Fully integrated within the existing influent pre-treatment

Features

  • New application drum screens
  • Potential recovery of cellulose
  • High availability
  • The project was awarded based on best price/quality ratio

General Data

Customer
Hoogheemraadschap De Stichtse Rijnlanden

Completion
Q2, 2020

Total project value
EUR EUR 2.3 Million

Design and Construct

WWTP Dodewaard, The Netherlands

Project Aims

  • Design and construct of WWTP for centralised treatment of municipal waste water from villages Dodewaard, Valburg, Zetten, Lienden en Eck en Wie
  • New WWTP based on Nereda® technology
  • Full energy autonomous design

Technical Data

  • Capacity 70,000 people equivalent
  • Hydraulic capacity 794 m3/hour
  • RWF/DWF = 3.4
  • Solar panels with capacity of 1,200,000 kWh/year (average production)

Activities

  • New influent building with fine screens (6mm) and sand removal
  • DWF buffer constructed in existing AT.
  • RWF buffer constructed in existing final clarifier.
  • Three (3) new Nereda® reactors (2,750 m3 each) including Nereda® internals and aeration system.
  • Granular sludge buffers incl. internals.
  • Odor air treatment and FeCl3 dosing.
  • Gravity sludge thickener
  • All civil works
  • All mechanical works
  • All electrical / automation works
  • Delivery of Nereda® seeding sludge and start-up & commissioning.

Special Features

  • WWTP Dodewaard will be the 10th Dutch Nereda®.
  • Best Value Procurement tender

General Data

Client
Waterschap Rivierenland

Completion
Planned Q2 2021

Contract value
EUR 15,4 Million

Energy Factory

WWTP Walcheren

Scope

  • Design and Construct (UAV-gc)
  • Process technology design Anammox® side stream treatment
  • Detailed- and Construction design
  • Construction civil works
  • Start-up & Commissioning
  • Plant Proving period
  • Maintenance (1 year)

Technical Data

  • CHP system 2 x 330kWe
  • Biogas pre-treatment 250 Nm3/hour
  • Nox emission < 340 mg
  • Anammox® side stream treatment 238 kg N/day

System & Technologies

  • Modernization of existing sludge line components (pumps, valves ect.)
  • Modification final dewatering and new PE preparation and dosing
  • CHP based on Senergie 330 modules with Liebherr gas engines
  • Gas boiler and heat distribution
  • Biogas cleaning installation for H2S and Siloxane removal (biological desulfurization with downstream activated carbon filters)
  • Anammox® side stream treatment 238 kg N/day
  • Controlled struvite precipitation based on B-Phos concept

Special Features

  • Lot 1 (side stream treatment) and Lot 2 (sludge line) both awarded to ELIQUO based on best price / quality ratio
  • ELIQUO operating as main contractor with coordination duty towards other project stake holders
  • Desulfurization of biogas based on a biological principle

General Data

Client
Waterschap Scheldestromen

Completion
Planned Q3 2018

Contract value
EUR 4.4 million

CHP

WWTP Franeker

Scope

  • Design, build, start-up & commissioning of a new CHP system
  • Consisting of gas engine installation, boiler, biogas pre-treatment for H2S and siloxane removal
  • Replacement/modification of electrical and control process automation
  • Realization of civil and construction works

Technical Data

  • CHP installation 155kWe and 165kWth
  • Biogas pre treatment 70Nm3/h
  • Boiler system 140kW

System & Technologies

  • F.U.N.K.E. Senergie 155kWe CHP unit with Liebherr 944 gas engine
  • Desulphurization and siloxane removal 70Nm3/h
  • Gas dryer and preheating
  • Gas booster
  • Autonomous control system with local operating interface
  • Gas quality measurement CH4, CO2, H2S, en O2

Special Features

  • Client awarded ELIQUO with a score ‘8’ (scale 1 – 10) for quality and communication

General Data

Client
Wetterskip Fryslân, The Netherlands

Completion
Oktober 2017

Contract value
EUR 390,790

Upgrading and modernization of sludge treatment facility and digestion

WWTP Drachten

Scope

  • Design and Construct (UAV-gc)
  • Process technology design
  • Construction design
  • MEICA design
  • Construction civil works
  • Installation of MEICA equipment and works
  • Start-up & Commissioning
  • Plant Proving period
  • Maintenance

Technical Data

  • CHP system for 205kWe
  • Biogas pre-treatment 100Nm3/hour
  • NOx emission <340 mg
  • Sludge handling capacity 2,100 ton dry solids / year
  • PS / WAS = 42 / 58 %

System & Technologies

  • Primary sludge pumping station to PS to digestion
  • Thinkening WAS with belt thickeners, including PE dosing and WAS feed pumps to digestion
  • Gas treatment unit 100Nm3/hour for desulphurization and siloxane removal
  • Senergie 205 CHP unit with Liebherr gas engine
  • Gas quality measurement CH4, CO2, H2S and O2
  • Control panels and electrical switch boards, including connection to plant SCADA system

Special Features

  • Tender was awarded at Best Economic Value Proposition criteria
  • At completion the plant reaches 70% energy self -sufficient operating conditions

General Data

Client
Wetterskip Fryslân, The Netherlands

Completion
September 2017

Contract value
EUR 2.2 million

Omzet.Amersfoort

Energy self-sufficient WWTP with nutrient recovery facility

Scope

  • Design & Construct (UAV-gc)
  • Combination of thermal pressure hydrolysis (LYSOTHERM®), nutrient recovery (Pearl®) and nitrogen reject water treatment (Demon®)

Technical Data

  • Centralized sludge treatment facility 12.255 ton DS/year, 300.000 p.e.
  • Production of 11 million kWh/year electricity
  • Production of 900 ton/year Crystal Green® fertilizer incl. long term off-take

System & Technologies

  • Mechanical thickening of primary and waste activated sludge's
  • WASSTRIP® phosphate stripping process
  • Sludge concentration prior to digestion with modified belt filter presses (12% DS)
  • LYSOTHERM® thermal pressure hydrolysis
  • CHP 3x500kWe / 550kWth
  • Entire Mechanical, electrical and process automation systems and installation
  • Including civil works

Special Features

  • Besides fill coverage of own energy needs, the plant produces 2 million kQh surplus of electricity annually, which is sufficient to provide 600 households with green electricity during the year

General Data

Client
Waterboard Vallei en Veluwe, The Netherlands

Completion
December 2017

Contract value
EUR 11.2 million

Demon® technology for nitrogen removal.

Scope

  • Demon® technology for nitrogen removal
  • Reject water (centrate) treatment sludge dewatering
  • Design, delivery and assembly of mechanical installations
  • Design of controlled technical components
  • Co design (with client) of civil and electronic installations
  • Commissioning and start up assistance

Technical Data

  • Continuous operation Demon® reactor (450 m3 tank)
  • Integrated gravity return sludge thickener
  • Aeration discs with removable frames
  • Centrate feed pump
  • Related instrumentation for equipment
  • Stainlees steel and PE piping
  • Online process monitoring for HNO2/O2/NH4/pH/SS

System & Technologies

  • Mechanical thickening of primary and waste activated sludge's
  • WASSTRIP® phosphate stripping process
  • Sludge concentration prior to digestion with modified belt filter presses (12% DS)
  • LYSOTHERM® thermal pressure hydrolysis
  • CHP 3x500kWe / 550kWth
  • Entire Mechanical, electrical and process automation systems and installation
  • Including civil works

Special Features

  • removable aeration frames
  • Fully automatic operation

General Data

Client
Envidan A/S, Denemarken

Completion
Oct. 2016

Contract value
EURO 650,000

Stand-alone sludge drying unit for drying of dewatered sewage sludge

Scope

  • Stand-alone sludge drying unit for drying of dewatered sewage sludge
  • Design, build, start-up & commissioning, including 16,000 hours of integral maintenance
  • Sludge drying is based on proprietary ELODRY® concept for low temperature sludge drying

Technical Data

  • Production capacity is 1,000 tons / year of dried sewage sludge
  • ELODRY® low temperature sludge drying facility 1 x NT16
  • Input is 23 - 25 % ds dewatered sewage sludge
  • Sludge drying performance is > 90 % ds
  • Maximum evaporation capacity is 440 kg H20 / h

System & Technologies

  • Integrated design for civil, mechanical, electrical and automation works
  • Low temperature belt dryer including exhaust gas treatment based on 1-step chemical scrubbing and discharge to existing bio-bed facility
  • Screw conveyor systems for feeding dewatered sludge to the dryer
  • Screw conveyor systems for discharge of dried sludge to disposal facility
  • Disposal facility consisting of automatic loading for 2 containers
  • Thermal energy is provided by a sewage gas fueled boiler and hot water circuits and recuperation facilities
  • All safety (Ex) systems are included
  • Integrated electrical and control system for plant autonomous operation
  • Execution of all related civil works and underground piping
  • Erection of the pre-fabricated plant, including all on-site mechanical and electrical installatin works
  • Start-up and commissioning as well ongoing plant performance optimization

Special Features

  • The system is constructed as a pre-fabricated modular plant based on 40 ft container housings
  • The project includes an overall maintenance responsibility for 16,000 operating hours after final commissioning
  • Project is implemented under Dutch uniform turn-key conditions UAV_GC 2005

General Data

Client
Waterboard Vallei en Veluwe

Completion
Oct. 2016

Contract value
EURO 872,290

Optimization Biogas Utilization

WWTP Emmen, The Netherlands

Scope

  • Design & Contsruct (UAV-gc)
  • CHP including exhaust gas treatment
  • Biogas pre-treatment
  • Energy distribution
  • 1 + 5 year 24/7 Service and Maintenance

Technical Data

  • CHP system for 500kWe and 550kWth
  • Biogas pre-treatment 250Nm3/hour
  • DeNOx system < 340 mg NOx/Nm3
  • Main Distribution board 1600A

System & Technologies

  • Senergie 500CHP unit with Liebherr 9512 gas motor
  • Biological desulphurization 250Nm3/hour 1000 ppm - 100 ppm H2S
  • Gas dryer and pre - heating
  • Gas booster
  • Activated Carbon Filter for silxane removal and rest desulphurization (dual function goal)
  • Autonomous process control system and local MMI
  • Gas quality measurement CH4, CO2, H2S and O2.

Special Features

  • Project was tendered through the Best Value Procurement methodology with dominant quality score evaluation

General Data

Client
Waterboard Vechtstromen, The Netherlands

Completion
Dec. 2014

Contract value
EURO 1.1 million

Sludge receipt facility Mierlo

WWTP Tilburg

Scope

  • Design and Delivery
  • Receipt facility for dewatered sludge
  • Cambi feed pump system
  • Sludge heating with CIP
  • Installation by client

Technical Data

  • Receipt of dewatered sludge 20-25% DS
  • Blending of sludge's to 16,5% DS (input spec. Cambi)

System & Technologies

  • Receipt bunker with discharge system
  • Screw conveyor to silo's
  • Sludge silo 2 x 585m3 including push floors and screw emptying system
  • Cambi feed pumps with inline mixing system for other sludge's
  • Sludge heating system for supply of pre-heated blend sludge's
  • CIP Clean In Place module
  • Piping and valves

Special Features

  • This project is part of the realization of the Energy Self Sufficient WWTP Tilburg

General Data

Client 
Heijmans Civiel BV, Rosmalen, The Netherlands

Completion
Oct. 2014

Contract value
EUR 1.3 million

Replacement CHP's

WWTP Hengelo and Enschede

Scope

  • Turn-key realisation
  • CHP-including exhaust gas treatment
  • Biogas pre-treatment
  • 24/7 Service and Maintenance

Technical Data

  • CHP system for 500kWe and 550kWth
  • Biogas pre-treatment 250Nm3/hour
  • DeNOx system

System & Technologies

  • Senergie 500CHP unit with Liebherr 9512 gas motor
  • Desulphurization and siloxane removal 250Nm3/hour
  • Gas dryer en - pre-heating
  • Gas booster
  • Autonomous process control system and local MMI
  • Gas quality measurement CH4, CO2, H2S en O2

Special Features

  • Implementation of the first Senergie 500 modules in The Netherlands

General Data

Client 
Waterboard Vechtstromen, The Netherlands

Completion
August 2013

Contract value
EUR 1.3 million

Struvite Recovery

WWTP Amsterdam - West

Scope

  • Design & Construct (UAV-gc)
  • Airprex® Struvite technology
  • Production of MAP
  • Industrial construction
  • Process Control & Visualisation

Technical Data

  • Sludge treatment capacity 1.700.000 p.e.
  • Flow digested bio-P sludge 70 - 120 m3/hr
  • Removal orthophosphate 95%
  • Improvement sludge dewatering 3-4%
  • Reduction of PE app. 4g active PE/kg DS
  • Production re-usable MAP product (Fosvaatje)

System & Technologies

  • Airprex® technology, 500m3 en 2 x 220m3 reactors
  • Coarse bubble aerations+
  • MgCl2 storage ( 2 x 50m3) and dosing system
  • MAP washing and storage
  • Redundant ventilation (Ex)
  • Pumps, piping and valves
  • Complete electrical installations
  • Autonomous process control (Package Unit) and visualisation

Special Features

  • Three reactors and structural steel works were installed in one day during a complex logistic operation

General Data

Client
Waternet Amsterdam, The Netherlands

Completion
Dec. 2013

Contract value
EURO 1.8 million

Demon® Rejectwater treatment

WWTP Echten, The Netherlands

Scope

  • Rejectwater treatment facility
  • Design, delivery and installatin of all Mechanical and Electrical systems
  • Process control and automation
  • Demon® nitrogen removal technology

Technical Data

  • Nitrogen load 112 ton/year, 320 kg/day
  • Concentration Nkj 800 - 1500 mg/l
  • Max. inflow 70m3/hr
  • Removal efficiency > 80%

System & Technologies

  • Combined feed - (600m3) and effluent buffer (400m3)
  • Demon® reactor 450m3
  • Plate diffusor aeration (Messner) and blowers
  • Submersible pumps and mixers
  • Stainless steel and HDPE piping
  • Electrical and process automation systems
  • Mechanical and Electrical installation works
  • Process instrumentation incl. analysing equipment

Special Features

  • At WWTP Echten, produced sludge's are digested in 2 stages (thermo + mesophilic), processed by the Airprex® system and dewatered by means of a chamber press

General Data

Client
Sweco / Waterboard Reest & Wieden, The Netherlands

Completion
July 2013

Contract value
EUR 356,000