BR9609736A - Processo para tratar uma ativadaexcedente - Google Patents
Processo para tratar uma ativadaexcedenteInfo
- Publication number
- BR9609736A BR9609736A BR9609736-1A BR9609736A BR9609736A BR 9609736 A BR9609736 A BR 9609736A BR 9609736 A BR9609736 A BR 9609736A BR 9609736 A BR9609736 A BR 9609736A
- Authority
- BR
- Brazil
- Prior art keywords
- sludge
- production
- pulp
- white
- subjected
- Prior art date
Links
Classifications
-
- 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
- D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
-
- 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
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
- C02F11/145—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances using calcium compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Patente de Invenção: <B>"PROCESSO PARA TRATAR UMA LAMA ATIVADA EXCEDENTE"<D>. A presente invenção refere-se a um processo para tratar depósitos formados durante a purificação biológica de água residual municipal e industrial e pode ser utilizada em vários campos da indústria, em particular na produção de papel e de polpa. Uma lama ativada excedente pré-espessada é submetida a tratamento com lodo branco obtido no estágio de causticação de licor verde na produção de polpa de sulfato, sob agitação. O lodo branco é usado em uma razão volumétrica para a lama ativada excedente igual a 1 : 5 - 10. Depois disso, a lama assim tratada é submetida à desidratação por filtragem, preferivelmente a uma temperatura entre 75 e 104°C. Os depósitos desidratados são secos e queimados. Um resíduo de cinza assim obtido, bem como um hidrolisado alcalino clareado são utilizados no processo de fabricação da produção de polpa de sulfato. O presente processo para tratamento da lama ativada excedente permite a intensificação do processo de filtração, evitando o uso de agentes químicos caros, uma utilização completa dos produtos obtidos quando do tratamento da lama, bem como a utilização do resíduo de produção de polpa de sulfato, isto é, lodo branco, com simplificação dos procedimentos e técnicas de produção e significativa redução de custos materiais.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU9595112218A RU2079454C1 (ru) | 1995-07-18 | 1995-07-18 | Способ обработки избыточного активного ила |
| PCT/RU1996/000032 WO1997003928A1 (en) | 1995-07-18 | 1996-02-12 | Process for treating a surplus activated sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9609736A true BR9609736A (pt) | 1999-12-21 |
Family
ID=20170155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9609736-1A BR9609736A (pt) | 1995-07-18 | 1996-02-12 | Processo para tratar uma ativadaexcedente |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0842125A1 (pt) |
| JP (1) | JPH11510090A (pt) |
| KR (1) | KR19990028251A (pt) |
| CN (1) | CN1196033A (pt) |
| AU (1) | AU4680296A (pt) |
| BR (1) | BR9609736A (pt) |
| CA (1) | CA2224683A1 (pt) |
| FI (1) | FI980091A0 (pt) |
| NO (1) | NO980210D0 (pt) |
| RU (1) | RU2079454C1 (pt) |
| WO (1) | WO1997003928A1 (pt) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9803384L (sv) * | 1998-03-02 | 1999-09-03 | Kemira Kemi Ab | Förfarande för behandling av processvatten |
| RU2167969C1 (ru) * | 2000-05-10 | 2001-05-27 | Грудинин Владимир Павлович | Способ промывки каустизационного шлама крепкого белого щелока |
| CN1295399C (zh) * | 2003-12-01 | 2007-01-17 | 中国农业科学院土壤肥料研究所 | 生活污泥－废弃塑料混聚物修复岩石坡面技术 |
| US9187863B2 (en) * | 2011-11-04 | 2015-11-17 | Valmet Ab | Method for the causticizing process for producing white liquor |
| CN102491618A (zh) * | 2011-11-29 | 2012-06-13 | 曾秀仪 | 一种剩余污泥的深度脱水方法 |
| CN106396308B (zh) * | 2016-10-27 | 2019-12-31 | 环境保护部华南环境科学研究所 | 一种剩余活性污泥的回收利用方法 |
| CN109279758B (zh) * | 2018-11-21 | 2021-08-10 | 湖南骏泰新材料科技有限责任公司 | 一种绿泥高效洗涤方法 |
| CN110424179B (zh) * | 2019-08-26 | 2021-09-21 | 华南理工大学 | 一种造纸污泥焚烧后固废改性用作造纸填料的方法 |
| CN112726252B (zh) * | 2020-11-30 | 2022-11-25 | 山东华泰纸业股份有限公司 | 一种造纸厂废渣的综合利用方法 |
| CN112796144A (zh) * | 2020-12-28 | 2021-05-14 | 山东泗水金立得纸业有限公司 | 一种无碳复写纸产线污泥回收高岭土的方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2410394A1 (de) * | 1973-03-07 | 1974-09-12 | Andco Inc | Verfahren zum entwaessern eines waessrigen schlamms dispergierten, fein zerkleinerten feststoffes |
| US4030968A (en) * | 1975-12-22 | 1977-06-21 | Consolidated-Bathurst Limited | Disposal of paper pulp mill sludge |
| NL7707081A (nl) * | 1977-06-27 | 1978-12-29 | Stamicarbon | Werkwijze voor het biologisch zuiveren van afvalwater. |
| DE3043518C2 (de) * | 1979-11-20 | 1985-08-01 | Amurskij celljulozno-kartonnyj kombinat, Amursk | Verfahren zur Rückgewinnung von Abwässerniederschlägen bzw. -rückständen |
| SU1038287A1 (ru) * | 1979-11-20 | 1983-08-30 | Всесоюзное научно-производственное объединение целлюлозно-бумажной промышленности | Способ обработки избыточного активного ила |
-
1995
- 1995-07-18 RU RU9595112218A patent/RU2079454C1/ru active
-
1996
- 1996-02-12 KR KR1019970709562A patent/KR19990028251A/ko not_active Abandoned
- 1996-02-12 JP JP9506587A patent/JPH11510090A/ja active Pending
- 1996-02-12 AU AU46802/96A patent/AU4680296A/en not_active Abandoned
- 1996-02-12 CN CN96196796A patent/CN1196033A/zh active Pending
- 1996-02-12 CA CA002224683A patent/CA2224683A1/en not_active Abandoned
- 1996-02-12 EP EP96902522A patent/EP0842125A1/en not_active Withdrawn
- 1996-02-12 WO PCT/RU1996/000032 patent/WO1997003928A1/en not_active Ceased
- 1996-02-12 BR BR9609736-1A patent/BR9609736A/pt not_active Application Discontinuation
- 1996-02-12 FI FI980091A patent/FI980091A0/fi unknown
-
1998
- 1998-01-16 NO NO980210A patent/NO980210D0/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN1196033A (zh) | 1998-10-14 |
| FI980091A7 (fi) | 1998-01-16 |
| FI980091L (fi) | 1998-01-16 |
| AU4680296A (en) | 1997-02-18 |
| CA2224683A1 (en) | 1997-02-06 |
| KR19990028251A (ko) | 1999-04-15 |
| NO980210L (no) | 1998-01-16 |
| NO980210D0 (no) | 1998-01-16 |
| FI980091A0 (fi) | 1998-01-16 |
| EP0842125A1 (en) | 1998-05-20 |
| RU2079454C1 (ru) | 1997-05-20 |
| JPH11510090A (ja) | 1999-09-07 |
| WO1997003928A1 (en) | 1997-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FB34 | Technical and formal requirements: requirement - article 34 of industrial property law | ||
| FA14 | Dismissal: dismissal - article 34 of industrial property law | ||
| B11T | Dismissal of application maintained [chapter 11.20 patent gazette] |