超出想象的世界第一套NEREDA 水处理装置实用效果(英文／中文)

Dazu - Chongqing 

© DHV, all rights reserved 

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Carrousel: more than 1,500 references 

60 in China 

Saudi Arabia USA BASF, 10,000,000 pe 

China 



Principle of Nereda ® 

Activated sludge Aerobic granular biomass 

Anaerobic 

Anoxic 

Aerobic 

Courtesy Delft University of Technology 



Hydraulic design (1/2) 

§ Influent feeding 

§ Goals 

§ Minimize short-circuiting 

§ Maximize Exchange Ratio 

§ Design 

§ Uniform piping layout at the 

bottom of the reactors 

§ Orifice number and sizing 

allowing even effluent 

distribution 

1. FEED / DISCHARGE 



Key topics Nereda 

§ 75% smaller footprint: 

• high biomass concentration 

• no selectors, no anaerobic tanks, no clarifiers 

Nereda 

activated sludge with bio-P 

Area Requirement (m 2 ) 

§ >30-50% energy savings: 

• less rotary equipment 

• efficient aeration 



Replacement STP Epe 

Old STP (1960 till 2011) 

Activated sludge 

33,000 p.e. 

600 m 3 /h 

Partial N-removal 

Chemical P-removal 

New situation (start-up 2011) 

Aerobic granular sludge 

59,000 p.e. 

1,500 m 3 /h 

Full N-removal 

Biological P-removal 



Construction 


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Epe 

inlet works 

pretreatment 

discharge sand filter 



Nereda ® cycle 

Nereda cycle Process Biology Design criteria 

1. Anaerobic feed 

and effluent 

discharge 

2. Aeration 

3. Settling 


Wastewater feed through the 

granular sludge bed and treated 

effluent displacement/discharge 

Aeration in complete mixed 

conditions 

Granular sludge settling retrieval 

and selection 

• P release 

• COD removal 

2. AERATION 

Excess sludge buffering 

• P uptake 

• COD removal 

• Nitrification 

• Simultaneous denitrification 

• Polishing post-denitrification 

3.SETTLING 

• Phase duration (min) 

• Reactor depth (m) 

• Surface load (m/h) 

• Exchange ratio (%) 

• Sludge load (kgCOD/kgMLSS/d) 

• Phase duration (min) 

• Selection pressure (m/h) 

• Phase duration (m) 



Epe STP 



Parameter 

Epe performance 

Influent 

mg/l 

Performance verification campaign 

March - November 2012 

(flow proportional) 

Effluent 

mg/l 

Removal 

COD 879 27 96.9% 

BOD 333 < 2 > 99.4% 

N Kj 77 1.4 98.1% 

NH 4 -N 54 0.1 99.8% 

N total 94.7% 

P ortho 5.8 0.26 * ) 95.6% 

P total 9.3 0.3 97.2% 

Suspended Solids 341 98.5% 

* ) < 0.02 mg P/l during second verification campaign 


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Investments Epe 

(data courtesy Water Board Veluwe) 

§ Total investment 

incl. 19% VAT, internal costs 

and fall-back facility preparation 

§ Contract RHDHV 

§ Price level next best: 

€ 18.7 million 

€ 15 million 

€ 22 million 

Note: investment costs includes additional equipment for first-full-scale 

design risk mitigation and fall-back preparations. 



History 



Nereda Epe showed sustainability 



STP Garmerwolde 

§ 150.000 pe extension 

§ 4,200 m 3 /h 

§ 2 x 10,000 m 3 Nereda 

§ N total =7 mg/l; P total =1 mg/l 

§ No post treatment 



STP Dinxperlo 



STP Vroomshoop 

(hybrid) 



Current status of the technology 

Installed base: The Netherlands – Portugal – South Africa 

Cheese speciality industry 

Convenient food industry 

Edible oil industry (SBR retrofit) 

Convenient food industry 

STP Epe | 59.000 pe | 1.500 m3/h 

STP Vroomshoop | 25.000 pe | 1.265 m3/h (construction) 

STP Dinxperlo | 15.730 pe (construction) 

STP Lisbon | 3 MLD (semi full-scale retrofit demo) 

STP Gansbaai | 63.000 pe | 5 MLD 

STP Stellenbosch | 40.000 pe | 5 MLD (construction) 

STP Garmerwolde | 150.000 pe | 4.200 m3/h (construction) 

STP Utrecht | 530.000 pe | 15.000 m3/h (demo contracted) 

Pipeline: approx. 20, inclusive larger scale 

further international roll-out to e.g. Australia, Brazil, India, 

Japan, Middle-East, Poland, UK and USA 



Why Nereda is often the best choice 

§ Lowest construction costs 

§ Lowest operation costs 

§ Easy and reliable operation 

§ Lowest energy consumption 

§ Best environmental profile 

§ No chemicals for nutrient removal 

§ Minimal waste production 

§ Most modern technology 

§ Reuse of existing tanks often possible 

§ Future proof 

• Easy to adopt to tougher standards 

• Harvest bioplastics 



More information 

Web: 

www.nereda.net 

E-mail: 

Nereda@RHDHV.com 



Nereda – Energy, Soil and 

Materials Factory?? 



Reusable 

effluent 

Future scenario 1 

Water, energy and P-recovery is possible 

Heat/electricity 


Phosphorus 

2. AERATION 

Excess sludge 

buffering 

Struvite 

3.SETTLING 

Crystalactor 



Nereda – Future Scenario2 

Treat 

wastewater 

Extra cellular 

polysaccharides 

Extra cellular 

proteins 

Bacterial 

alginate 


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. 

.

• Food industry: food additives in ice-cream, jellies, beer, etc. 

• Textile printing 

• Medical purpose 





0, 1 ug/L, 10ug/L, 100 ug/L, 1mg/L,10 mg/L 



§ Will extracellular polysaccharides in aerobic 

granules change our future?

超出想象的世界第一套NEREDA 水处理装置实用效果(英文／中文)

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