超出想象的世界第一套NEREDA 水处理装置实用效果(英文/中文)
超出想象的世界第一套NEREDA 水处理装置实用效果(英文/中文)
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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Dazu - Chongqing<br />
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Carrousel: more than 1,500 references<br />
60 in China<br />
Saudi Arabia USA BASF, 10,000,000 pe<br />
China<br />
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Principle of Nereda ®<br />
Activated sludge Aerobic granular biomass<br />
Anaerobic<br />
Anoxic<br />
Aerobic<br />
Courtesy Delft University of Technology<br />
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Hydraulic design (1/2)<br />
§ Influent feeding<br />
§ Goals<br />
§ Minimize short-circuiting<br />
§ Maximize Exchange Ratio<br />
§ Design<br />
§ Uniform piping layout at the<br />
bottom of the reactors<br />
§ Orifice number and sizing<br />
allowing even effluent<br />
distribution<br />
1. FEED / DISCHARGE<br />
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Key topics Nereda<br />
§ 75% smaller footprint:<br />
• high biomass concentration<br />
• no selectors, no anaerobic tanks, no clarifiers<br />
Nereda<br />
activated sludge with bio-P<br />
Area Requirement (m 2 )<br />
§ >30-50% energy savings:<br />
• less rotary equipment<br />
• efficient aeration<br />
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Replacement STP Epe<br />
Old STP (1960 till 2011)<br />
Activated sludge<br />
33,000 p.e.<br />
600 m 3 /h<br />
Partial N-removal<br />
Chemical P-removal<br />
New situation (start-up 2011)<br />
Aerobic granular sludge<br />
59,000 p.e.<br />
1,500 m 3 /h<br />
Full N-removal<br />
Biological P-removal<br />
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Construction<br />
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Epe<br />
inlet works<br />
pretreatment<br />
discharge sand filter<br />
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Nereda ® cycle<br />
Nereda cycle Process Biology Design criteria<br />
1. Anaerobic feed<br />
and effluent<br />
discharge<br />
2. Aeration<br />
3. Settling<br />
1. FEED / DISCHARGE<br />
Wastewater feed through the<br />
granular sludge bed and treated<br />
effluent displacement/discharge<br />
Aeration in complete mixed<br />
conditions<br />
Granular sludge settling retrieval<br />
and selection<br />
• P release<br />
• COD removal<br />
2. AERATION<br />
Excess sludge buffering<br />
• P uptake<br />
• COD removal<br />
• Nitrification<br />
• Simultaneous denitrification<br />
• Polishing post-denitrification<br />
3.SETTLING<br />
• Phase duration (min)<br />
• Reactor depth (m)<br />
• Surface load (m/h)<br />
• Exchange ratio (%)<br />
• Sludge load (kgCOD/kgMLSS/d)<br />
• Phase duration (min)<br />
• Selection pressure (m/h)<br />
• Phase duration (m)<br />
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Epe STP<br />
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Parameter<br />
Epe performance<br />
Influent<br />
mg/l<br />
Performance verification campaign<br />
March - November 2012<br />
(flow proportional)<br />
Effluent<br />
mg/l<br />
Removal<br />
COD 879 27 96.9%<br />
BOD 333 < 2 > 99.4%<br />
N Kj 77 1.4 98.1%<br />
NH 4 -N 54 0.1 99.8%<br />
N total 94.7%<br />
P ortho 5.8 0.26 * ) 95.6%<br />
P total 9.3 0.3 97.2%<br />
Suspended Solids 341 98.5%<br />
* ) < 0.02 mg P/l during second verification campaign<br />
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Investments Epe<br />
(data courtesy Water Board Veluwe)<br />
§ Total investment<br />
incl. 19% VAT, internal costs<br />
and fall-back facility preparation<br />
§ Contract RHDHV<br />
§ Price level next best:<br />
€ 18.7 million<br />
€ 15 million<br />
€ 22 million<br />
Note: investment costs includes additional equipment for first-full-scale<br />
design risk mitigation and fall-back preparations.<br />
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History<br />
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Nereda Epe showed sustainability<br />
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STP Garmerwolde<br />
§ 150.000 pe extension<br />
§ 4,200 m 3 /h<br />
§ 2 x 10,000 m 3 Nereda<br />
§ N total =7 mg/l; P total =1 mg/l<br />
§ No post treatment<br />
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STP Dinxperlo<br />
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STP Vroomshoop<br />
(hybrid)<br />
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Current status of the technology<br />
Installed base: The Netherlands – Portugal – South Africa<br />
Cheese speciality industry<br />
Convenient food industry<br />
Edible oil industry (SBR retrofit)<br />
Convenient food industry<br />
STP Epe | 59.000 pe | 1.500 m3/h<br />
STP Vroomshoop | 25.000 pe | 1.265 m3/h (construction)<br />
STP Dinxperlo | 15.730 pe (construction)<br />
STP Lisbon | 3 MLD (semi full-scale retrofit demo)<br />
STP Gansbaai | 63.000 pe | 5 MLD<br />
STP Stellenbosch | 40.000 pe | 5 MLD (construction)<br />
STP Garmerwolde | 150.000 pe | 4.200 m3/h (construction)<br />
STP Utrecht | 530.000 pe | 15.000 m3/h (demo contracted)<br />
Pipeline: approx. 20, inclusive larger scale<br />
further international roll-out to e.g. Australia, Brazil, India,<br />
Japan, Middle-East, Poland, UK and USA<br />
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Why Nereda is often the best choice<br />
§ Lowest construction costs<br />
§ Lowest operation costs<br />
§ Easy and reliable operation<br />
§ Lowest energy consumption<br />
§ Best environmental profile<br />
§ No chemicals for nutrient removal<br />
§ Minimal waste production<br />
§ Most modern technology<br />
§ Reuse of existing tanks often possible<br />
§ Future proof<br />
• Easy to adopt to tougher standards<br />
• Harvest bioplastics<br />
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More information<br />
Web:<br />
www.nereda.net<br />
E-mail:<br />
Nereda@RHDHV.com<br />
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Nereda – Energy, Soil and<br />
Materials Factory??<br />
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Reusable<br />
effluent<br />
Future scenario 1<br />
Water, energy and P-recovery is possible<br />
Heat/electricity<br />
1. FEED / DISCHARGE<br />
Phosphorus<br />
2. AERATION<br />
Excess sludge<br />
buffering<br />
Struvite<br />
3.SETTLING<br />
Crystalactor<br />
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Nereda – Future Scenario2<br />
Treat<br />
wastewater<br />
Extra cellular<br />
polysaccharides<br />
Extra cellular<br />
proteins<br />
Bacterial<br />
alginate<br />
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.<br />
.
• Food industry: food additives in ice-cream, jellies, beer, etc.<br />
• Textile printing<br />
• Medical purpose<br />
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0, 1 ug/L, 10ug/L, 100 ug/L, 1mg/L,10 mg/L<br />
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§ Will extracellular polysaccharides in aerobic<br />
granules change our future?<br />
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