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"Quick Static Decanter For Prethickening Water Treatment Sludge, And Plant Including Such A Decanter"

Abstract: The invention relates to a static decanter (D) for prethickening liquid sludge in a water treatment plant, in particular wastewater, comprising an inclined bottom (8), the decanter being provided with a liquid sludge supply pump (13), a device for injecting a polymer in the liquid sludge, an overspill discharge (23) and a pump (26) for extracting the prethickened sludge from the decanter. The decanter further includes a means for accelerating the sludge decantation, a means (M) for adjusting the concentration of suspended material in the prethickened sludge at the outlet, and capable of maintaining the concentration of the prethickened sludge extracted from the decanter at a substantially constant level despite the concentration variations at the inlet, and a means (M3) for adjusting the level of the sludge blanket (V) and capable of maintaining said level at the lowest possible level.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
24 June 2011
Publication Number
16/2012
Publication Type
INA
Invention Field
CHEMICAL
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2017-01-17
Renewal Date

Applicants

DEGREMONT
183, AVENUE DU 18 JUIN 1940, F-92500 RUEIL MALMAISON, FRANCE

Inventors

1. PATRICK DESCAMPS
38 RUE JEAN BAPTISTE BROUSSIN, F- 78160 MARLY LE ROI, FRANCE
2. CLAUDE PREVOT
30 RUE LOUIS HUBERT, F-78140 VELIZY, FRANCE
3. ANDRE HAUBRY
3 CHEMIN DES PLISSONS, F-78250 MEZY SUR SEINE, FRANCE

Specification

NA

Documents

Application Documents

# Name Date
1 4855-DELNP-2011-GPA-(06-09-2011).pdf 2011-09-06
2 4855-DELNP-2011-Correspondence-Others-(06-09-2011).pdf 2011-09-06
3 4855-delnp-2011-Form-3-(27-09-2011).pdf 2011-09-27
4 4855-delnp-2011-Correspondence-Others-(27-09-2011).pdf 2011-09-27
5 4855-delnp-2011-Form-3-(31-10-2011).pdf 2011-10-31
6 4855-delnp-2011-Correspondence Others-(31-10-2011).pdf 2011-10-31
7 4855-delnp-2011-Form-5.pdf 2012-02-27
8 4855-delnp-2011-Form-3.pdf 2012-02-27
9 4855-delnp-2011-Form-2.pdf 2012-02-27
10 4855-delnp-2011-Form-18.pdf 2012-02-27
11 4855-delnp-2011-Form-1.pdf 2012-02-27
12 4855-delnp-2011-Drawings.pdf 2012-02-27
13 4855-delnp-2011-Description (Complete).pdf 2012-02-27
14 4855-delnp-2011-Correspondence-others.pdf 2012-02-27
15 4855-delnp-2011-Claims.pdf 2012-02-27
16 4855-delnp-2011-Abstract.pdf 2012-02-27
17 4855-delnp-2011-Others-(28-09-2015).pdf 2015-09-28
18 4855-delnp-2011-Correspondence Others-(28-09-2015).pdf 2015-09-28
19 Petition Under Rule 137 [30-09-2015(online)].pdf 2015-09-30
20 OTHERS [30-09-2015(online)].pdf 2015-09-30
21 Other Document [30-09-2015(online)].pdf 2015-09-30
22 Examination Report Reply Recieved [30-09-2015(online)].pdf 2015-09-30
23 Description(Complete) [30-09-2015(online)].pdf 2015-09-30
24 Claims [30-09-2015(online)].pdf 2015-09-30
25 Abstract [30-09-2015(online)].pdf 2015-09-30
26 4855-delnp-2011-GPA-(01-10-2015).pdf 2015-10-01
27 4855-delnp-2011-Drawings-(01-10-2015).pdf 2015-10-01
28 4855-delnp-2011-Correspondence Others-(01-10-2015).pdf 2015-10-01
29 Petition Under Rule 137 [17-11-2015(online)].pdf 2015-11-17
30 Other Document [17-11-2015(online)].pdf 2015-11-17
31 4855-delnp-2011-Form-1-(18-11-2015).pdf 2015-11-18
32 4855-delnp-2011-Correspondence Others-(18-11-2015).pdf 2015-11-18
33 4855-DELNP-2011_EXAMREPORT.pdf 2016-06-30
34 4855-DELNP-2011-RELEVANT DOCUMENTS [23-03-2018(online)].pdf 2018-03-23
35 279257-4855-DELNP-2011.pdf 2018-12-10
36 4855-DELNP-2011-RELEVANT DOCUMENTS [28-03-2019(online)].pdf 2019-03-28
37 4855-DELNP-2011-RELEVANT DOCUMENTS [06-03-2020(online)].pdf 2020-03-06
38 4855-DELNP-2011-RELEVANT DOCUMENTS [27-09-2021(online)].pdf 2021-09-27
39 4855-DELNP-2011-RELEVANT DOCUMENTS [30-09-2021(online)].pdf 2021-09-30
40 4855-DELNP-2011-RELEVANT DOCUMENTS [30-09-2021(online)]-1.pdf 2021-09-30
41 4855-DELNP-2011-RELEVANT DOCUMENTS [23-09-2022(online)].pdf 2022-09-23
42 4855-DELNP-2011-RELEVANT DOCUMENTS [28-09-2022(online)].pdf 2022-09-28
43 4855-DELNP-2011-RELEVANT DOCUMENTS [19-09-2023(online)].pdf 2023-09-19
44 4855-DELNP-2011-RELEVANT DOCUMENTS [26-09-2023(online)].pdf 2023-09-26

ERegister / Renewals

3rd: 24 Feb 2017

From 23/12/2011 - To 23/12/2012

4th: 24 Feb 2017

From 23/12/2012 - To 23/12/2013

5th: 24 Feb 2017

From 23/12/2013 - To 23/12/2014

6th: 24 Feb 2017

From 23/12/2014 - To 23/12/2015

7th: 24 Feb 2017

From 23/12/2015 - To 23/12/2016

8th: 24 Feb 2017

From 23/12/2016 - To 23/12/2017

9th: 05 Dec 2017

From 23/12/2017 - To 23/12/2018

10th: 29 Nov 2018

From 23/12/2018 - To 23/12/2019

11th: 13 Dec 2019

From 23/12/2019 - To 23/12/2020

12th: 16 Dec 2020

From 23/12/2020 - To 23/12/2021

13th: 16 Dec 2021

From 23/12/2021 - To 23/12/2022

14th: 19 Dec 2022

From 23/12/2022 - To 23/12/2023

15th: 21 Dec 2023

From 23/12/2023 - To 23/12/2024

16th: 16 Dec 2024

From 23/12/2024 - To 23/12/2025