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1. WO2020136213 - IMPROVED METHOD AND DEVICE FOR ANAEROBIC DIGESTION

Publication Number WO/2020/136213
Publication Date 02.07.2020
International Application No. PCT/EP2019/087033
International Filing Date 24.12.2019
IPC
C02F 11/04 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
11Treatment of sludge; Devices therefor
02Biological treatment
04Anaerobic treatment; Production of methane by such processes
C02F 1/34 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
34with mechanical oscillations
B01F 5/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers; Mixers for falling materials, e.g. solid particles
10Circulation mixers
B01F 5/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers; Mixers for falling materials, e.g. solid particles
04Injector mixers
C02F 11/123 2019.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
11Treatment of sludge; Devices therefor
12by de-watering, drying or thickening
121by mechanical de-watering
123using belt or band filters
C02F 1/56 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
52by flocculation or precipitation of suspended impurities
54using organic material
56Macromolecular compounds
CPC
B01F 5/0475
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers
04Injector mixers ; , i.e. one or more components being added to a flowing main component
0403Mixing conduits or tubes, i.e. conduits or tubes through which the main component is flown
0471the additional component being introduced at the circumference of the conduit
0475the conduit having a plurality of openings in the axial direction or in the circumferential direction
B01F 5/106
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers
10Circulation mixers ; , e.g. at least part of the mixture being discharged from, and reintroduced into, a receptacle, e.g. with rotary stirrer
106the mixture being discharged from and reintroduced into a receptacle through a recirculation tube into which an additional component is introduced
C02F 1/20
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
20by degassing, i.e. liberation of dissolved gases
C02F 1/24
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
24by flotation
C02F 1/34
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
34with mechanical oscillations
C02F 1/56
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
52by flocculation or precipitation of suspended impurities
54using organic material
56Macromolecular compounds
Applicants
  • OREGE [FR]/[FR]
Inventors
  • CAPEAU, Patrice
  • GENDROT, Pascal
Agents
  • BENECH, Frédéric
Priority Data
187415826.12.2018FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) IMPROVED METHOD AND DEVICE FOR ANAEROBIC DIGESTION
(FR) PROCEDE ET DISPOSITIF DE METHANISATION AMELIORES
Abstract
(EN)
The invention relates to a method and a device for anaerobic digestion from an organic liquid sludge (21), comprising, in a known manner, a step of hydrolysis/acidogenesis of the sludge in a digester (47, 100), a step of acetogenesis for producing acetate from the hydrolysed sludge and a step of methanogenesis from the acetates for producing methane. The method comprises an initial step of creating a hydrolysed sludge emulsion (23) obtained by means of the impact of the sludge with gas (27) injected into the sludge, then continuously supplying the hydrolysed sludge to a reactor (25, 101) pressurised in line relative to the digester, before discharging said sludge from the reactor via a member (29) generating a pressure drop in the hydrolysed sludge, the initial stage being repeated at least once before supplying the, and/or via the, digester.
(FR)
Il s'agit d'un procédé et d'un dispositif de méthanisation à partir d'une boue (21) liquide organique comportant de façon connue dans un digesteur (47, 100) une étape d'hydrolyse/acidogenèse de la boue, une étape d'acétogenèse pour production d'acétate à partir de la boue hydrolysée et une étape de méthanogenèse à partir des acétates pour produire du méthane. Il comporte une étape initiale de création d'une émulsion de boue (23) hydrolysée, obtenue par choc de la boue avec du gaz (27) injecté dans ladite boue, puis alimentation en continu avec ladite boue hydrolysée d'un réacteur (25, 101) pressurisé en ligne par rapport au digesteur, avant évacuation du réacteur via un organe (29) générant une perte de charge dans ladite boue hydraulisée, ladite étape initiale étant renouvelée au moins une fois avant alimentation du, et/ou via le, digesteur.
Also published as
Latest bibliographic data on file with the International Bureau