WO2012168172A2 - Installation d'épuration des eaux usées - Google Patents

Installation d'épuration des eaux usées Download PDF

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Publication number
WO2012168172A2
WO2012168172A2 PCT/EP2012/060469 EP2012060469W WO2012168172A2 WO 2012168172 A2 WO2012168172 A2 WO 2012168172A2 EP 2012060469 W EP2012060469 W EP 2012060469W WO 2012168172 A2 WO2012168172 A2 WO 2012168172A2
Authority
WO
WIPO (PCT)
Prior art keywords
sludge
water mixture
wastewater treatment
treatment plant
plant according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2012/060469
Other languages
German (de)
English (en)
Other versions
WO2012168172A3 (fr
Inventor
Axel Gommel
Hartmut NEUL
Kurt Tippmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of WO2012168172A2 publication Critical patent/WO2012168172A2/fr
Anticipated expiration legal-status Critical
Publication of WO2012168172A3 publication Critical patent/WO2012168172A3/fr
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
    • C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/043—Treatment of partial or bypass streams
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the invention relates to a wastewater treatment plant according to the
  • Activated sludge process with at least one activated sludge tank and at least one subsequent secondary clarifier.
  • Such systems have been known for a long time, it being essential that in
  • Wastewater suspended bacterial mass in the form of activated sludge takes over the biological purification.
  • the wastewater first enters the aeration tank where it is ventilated. From there, the mud-water mixture flows into the secondary clarifier or sedimentation tank. The activated sludge is separated in the secondary clarifier by sedimentation from the treated wastewater and mostly to the inlet of the aeration tank
  • the object of the invention is therefore to keep the efficiency of wastewater treatment as long as possible for as long as possible.
  • this object is achieved in that at least part of the sludge-water mixture discharged from the activated sludge tank and / or at least part of the sludge-water mixture discharged from the secondary clarifier is passed at least temporarily through a decalcification device.
  • separation processes with density separation in particular hydrocyclones.
  • the sludge-water mixture is brought by tangential blowing into a chamber with a circular cross section on a circular path, the heavier lime particles outside spiral to Schireilabscheider and the sludge-water mixture with the biomass within reach to the light part spout ,
  • biomass in the hydrocyclone can be separated gently, in particular without large shear forces.
  • the sludge-water mixture should be degassed before this.
  • the feed of the sludge-water mixture to the decalcifier is set or controlled so that the proportion of organic dry matter (oTS) in the aeration tank is between 1 and 6 g / l. While a low value is also associated with poor wastewater treatment, a higher value barely brings
  • the entire sludge-water mixture discharged from the activated sludge tank can be passed through the descaling device at least temporarily. This is of course associated with a comprehensive decalcification.
  • Aeration tank returned.
  • At least part of the sludge-water mixture discharged from the secondary clarifier is passed at least temporarily through a decalcification device, it may be advantageous if at least part of the sludge-water mixture passes through the sludge-water mixture
  • Descaling device guided sludge-water-mixture to
  • Aeration tank is returned.
  • the sludge-water mixture should constantly be passed through the decalcification device. But especially in the control of the process can be a shutdown of the
  • Descaling device attached. This is especially true in the event that the inorganic content in the activated sludge in the desired operating window, for example, about 50%.
  • the wastewater to be purified first passes through an anaerobic purification stage 4 in the form of an anaerobic reactor. This is followed by the purification stage following the activated sludge process.
  • the substances contained in the wastewater serve the bacteria in the activated sludge as food, so that new bacteria constantly regrow.
  • a part of the sludge-water mixture 6 for sludge separation passes directly into a subsequent secondary sedimentation or settling tank 2.
  • the other part of the mud-water mixture 6 is only by a
  • Degassing device 5 in the simplest form with a standpipe and then passed through a descaling device 3.
  • the descaling device 3 is usually designed as a hydrocyclone and separates the heavy components, here the lime particles from the sludge-water mixture. 6 from. Inn Hydrocyclone is separated by density using centrifugal force, with small diameter hydrocyclones often being more effective for limescale separation. This kind of separation is very gentle, which
  • Descaling device 3 also in the secondary clarifier 2 or to the inlet of the aeration tank. 1
  • the purified wastewater 8 and the sludge 7 can be discharged from the secondary clarifier 2. While a portion of the sludge 7 is returned to the aeration tank 1, the other part of the sludge 7 passes together with the lime particle stream 9 from the
  • Descaling device 3 to a sludge press outside the process.
  • the discharge of sludge 7 is possible because bacteria regrow constantly.
  • Descaling effectively counteracts the accumulation of lime due to recirculation in the aeration tank.
  • oTS organic dry matter
  • the sludge-water mixture 6 is passed in the embodiment according to Figure 2 directly from the aeration tank 1 to NachNeillbecken.
  • the sludge 7 discharged from the secondary clarifier 2 is divided into three partial streams. While a partial flow passes directly to the inlet of the aeration tank 1, a second partial flow via a decalcifier 3 for Aeration tank 1 and the third sub-stream here also out of the process together with the lime particle stream 9 of the decalcifier 3 to a sludge press.
  • a reduction of the load in the aeration tank 1 takes place via the decalcification.
  • Lime content in the aeration tank 1 would rise much faster than the activated sludge fraction. However, since the consistency is limited, this would be at the expense of the activated sludge content, which greatly affects the efficiency of the purification. In addition, a high proportion of lime would also lead to heavy deposits in the
  • Impairment of the ventilation system due to blockage caused by lime is to be feared.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Analytical Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Activated Sludge Processes (AREA)

Abstract

L'invention concerne une installation d'épuration des eaux usées utilisant le procédé des boues activées et comprenant au moins un bassin d'aération (1) suivi d'au moins un bassin de décantation secondaire (2). L'invention vise à maintenir l'efficacité de l'épuration au niveau le plus élevé possible pendant le plus longtemps possible. A cet effet, au moins une partie du mélange eau-boues (6) évacué du bassin d'aération (1) et/ou au moins une partie du mélange eau-boues (6) évacué du bassin de décantation secondaire (2) passe au moins par moments par un dispositif de décarbonatation (3).
PCT/EP2012/060469 2011-06-09 2012-06-04 Installation d'épuration des eaux usées Ceased WO2012168172A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110077271 DE102011077271A1 (de) 2011-06-09 2011-06-09 Abwasserreinigungsanlage
DE102011077271.5 2011-06-09

Publications (2)

Publication Number Publication Date
WO2012168172A2 true WO2012168172A2 (fr) 2012-12-13
WO2012168172A3 WO2012168172A3 (fr) 2015-12-17

Family

ID=46208053

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/060469 Ceased WO2012168172A2 (fr) 2011-06-09 2012-06-04 Installation d'épuration des eaux usées

Country Status (2)

Country Link
DE (1) DE102011077271A1 (fr)
WO (1) WO2012168172A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108439717A (zh) * 2018-04-25 2018-08-24 东至东方纸业有限公司 一种造纸厂污水处理系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109399816A (zh) * 2017-08-17 2019-03-01 玖龙纸业(重庆)有限公司 一种用于纸机喷淋系统的造纸污水处理中中水的处理方法
EP3553162A1 (fr) * 2018-04-13 2019-10-16 Niersberger Wohn- und Anlagenbau GmbH & Co. KG Procédé, installation et système de traitement des résidus de fermentation
CN110894108A (zh) * 2018-09-13 2020-03-20 唐山市冀滦纸业有限公司 一种曝气水处理设备
DE102020002363A1 (de) * 2020-04-20 2021-10-21 Meri Environmental Solutions Gmbh Verfahren und Anlage zur anaeroben Reinigung von Abwasser und/oder Prozesswasser umfassend Steuerung des Gehalts an anorganischen Feststoffen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137905A1 (de) * 1991-11-18 1993-05-19 Rudolph Karl Ulrich Prof Dr Dr Verfahren zur steuerung der schlammfuehrung in einer biologischen klaeranlage
DE4138667A1 (de) * 1991-11-25 1993-05-27 Sued Chemie Ag Verfahren zum entlasten von nachklaerbecken
JP2000325981A (ja) * 1999-05-21 2000-11-28 Nisshin Steel Co Ltd カルシウム含有排水の生物処理方法
DE102006034157A1 (de) * 2006-07-24 2008-01-31 Siemens Ag Abwasserreinigungseinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108439717A (zh) * 2018-04-25 2018-08-24 东至东方纸业有限公司 一种造纸厂污水处理系统

Also Published As

Publication number Publication date
WO2012168172A3 (fr) 2015-12-17
DE102011077271A1 (de) 2012-12-13

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