CAMBI THP

Thermal Hydrolysis Process

Davide Perduca

CAMBI è...

Leader mondiale nella tecnologia di idrolisi termica per la

digestione avanzata di fanghi e frazioni organiche

Più di 60 impianti in 21 Nazioni

Circa 100 Milioni di Abitanti Equivalenti serviti

Sede Operativa mercato Sud Europa: Casteggio (PV)

CAMBI SERVE UNA POPOLAZIONE MAGGIORE DI

100 MILIONI A.E. IN TUTTO IL MONDO

SEOUL – DUBLINO – OSLO – BRUSSELS – ATENE

SANTIAGO DEL CILE – EDINBURGO – CARDIFF – E 20+ ALTRE CITTA’

PECHINO

LONDRA

WASHINGTON DC

SINGAPORE

CambiTHP® IN UK

CambiTHP® tratta

>30% fango

prodotto in UK.

Minworth STW, Birmingham (2016), Cambi 3 x B6-4, Severn Trent Water

Basingstoke (2016), Cambi 1 x B6-4, Thames Water

BENEFICI DELL’IDROLISI TERMICA CAMBI Vs.

DIGESTIONE ANAEROBICA CONVENZIONALE

SCHEMA DI PROCESSO CAMBI THP – IMPIANTO

DI DEPURAZIONE STANDARD

Cambi Steam Explosion

CAMBI SIGNIFICANTLY REDUCES CARBON FOOTPRINT

”… installation of

anaerobic digestion

… significantly

reduces carbon foot

print, especially if

dewaterability is

improved” (Auty and

Blake, 2008, Barber,

2009)

“… [The] thermal

hydrolysis

pretreatment

system at …

Davyhulme … will

reduce [United

Utilities’] carbon

footprint by 8% - the

equivalent of

removing 270,000 cars

off the road for 30

years.”, March-April

2009, Worldwater

BASIC SLUDGE STRATEGIES - WORLDWIDE

Digested cake is at the road fork of strategic planning of biosolids

Capital and operating costs based on tonne of water evaporation or transport

Drying makes no sense for agriculture at most transport

costs –only if agriculture is not available or too expensive

Digested cake to agriculture based on stackable stable low

volume product – it’s a transport business – is pasteurised

product needed?

Digested cake

Class A

No agriculture

Drying

1MWh/tWE

Drying size based on dewatering/cake

volume

Gasification /

Pyrolisis

Incineration

2MWh/tWE

Autothermic cake is

preferred ~35% DS

Agriculture

Lowest cost option

Cost/t transport

Recycling of nutrients

Impianto depurazione Psyttalia - Atene

Cambi THP: Psyttalia WWTP, Atene

Cambi THP: Psyttalia WWTP, Atene

Cambi THP

CAMBI XXL: DAVYHULME, UK, 91,000 t DS/year (1000 MLD)

Cambi THP

B12-4x5 reactors

8 x 7500 m3

digesters

CAMBI Advanced digestion:

Class A Cambi Cake to agriculture and incineration back-up

Increaseas capacity at existing incinerator by 14,000 tonnes dry solids/year (avoided new

incinerator)

60% VS reduction, 2.5 times more sludge through existing digesters

10 MW green electricity generation (gas engines), and steam to Cambi

Raw sludge cake

import

CAMBI THP AT BLUE PLAINS WWTP (390 MGD, 1400 MLD, 4

MILLION P.E.) WASHINGTON DC, 400 DRY TONS PER DAY.

174,000m3 designed originally 4 digesters, = 58,100 m3 (1/3 of traditional)

Saved $200 million CAPEX vs traditional

Saved >$20 mill in OPEX/year

PLANNED TRADITIONAL DESIGN CAMBI SOLUTION

NEW SOLUTION

CANCELLED TRADITIONAL DESIGN CAMBI PROCESS

RESOURCE RECOVERY AT BLUE PLAINS WWTP, WASHINGTON

DC

CAMBI THP AT BLUE PLAINS WWTP (1400 MLD, 4 MILLION P.E.)

WASHINGTON DC, 400 DRY TONS PER DAY.

• 14 weeks from 0 to 330 dry tons per day

• Feeding 4 digesters

• Operating 24/7 fully automatic

• > 60% VSR

• Each train ran 14 days exceeding max

capacity rating

• ½ biosolids leaving site. 30-32% DS

Program Benefits with CambiTHP

advanced digestion at DC Water

Reduce biosolids quantities by more than 50%

Improve product quality (Class A and more)

Generate 13 MW of clean, renewable power

from the CHP

Cut GHG emissions by ~57,000 tonnes/yr

Save millions of dollars annually

Reinventing Biosolids

17

BLOOM – DC WATER

IMG_9261.mp4

LA SOLUZIONE CAMBI TRASFORMA UN RIFIUTO IN UN

PRODOTTO VALORIZZABILE:

FROM WASTE TO WORTH