SE7705632L - PROCEDURE AND PLANT FOR WASTEWATER CLEANING - Google Patents

PROCEDURE AND PLANT FOR WASTEWATER CLEANING

Info

Publication number
SE7705632L
SE7705632L SE7705632A SE7705632A SE7705632L SE 7705632 L SE7705632 L SE 7705632L SE 7705632 A SE7705632 A SE 7705632A SE 7705632 A SE7705632 A SE 7705632A SE 7705632 L SE7705632 L SE 7705632L
Authority
SE
Sweden
Prior art keywords
effluent
solids
dissolved substances
treatment
sedimentable
Prior art date
Application number
SE7705632A
Other languages
Swedish (sv)
Inventor
D Disselbeck
K-H Ott
Original Assignee
Hoechst Ag
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
Priority claimed from DE2621698A external-priority patent/DE2621698C3/en
Priority claimed from DE2638910A external-priority patent/DE2638910C2/en
Application filed by Hoechst Ag filed Critical Hoechst Ag
Publication of SE7705632L publication Critical patent/SE7705632L/en

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
    • C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/03—Processes of filtration using flocculating agents
    • 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
    • C02F3/04—Aerobic processes using trickle filters
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Filtering Materials (AREA)
  • Detergent Compositions (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Filtration Of Liquid (AREA)

Abstract

A process for the treatment of effluent which contains solid, sedimentable, colloidal and truly dissolved substances and whose impurities are at least partially of an organic nature, with a reduction in the chemical and biochemical oxygen demand, is characterised in that flocculation aids are added to the effluent and the solids-containing effluent is passed by gravity through a supporting fabric located in a suspending device. During the filtration step, a combination filter composed of a) this supporting fabric and b) a primary filter layer of the solids separated off is formed, by means of which the further effluent introduced is freed of the major part of the solid particles. The filtration through this combination filter has the effect that not only the sedimentable and also a substantial part of the colloidally dissolved substances, but also a major part of the truly dissolved substances are separated off, so that a filtrate is obtained, for the treatment of which a biological oxygen demand is required which is reduced by up to 90 %, relative to a municipal effluent freed of solids. The process can be combined with equipment for biological and/or chemical-physical treatment. Equipment in which the process according to the invention is carried out is described.
SE7705632A 1976-05-15 1977-05-13 PROCEDURE AND PLANT FOR WASTEWATER CLEANING SE7705632L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2621698A DE2621698C3 (en) 1976-05-15 1976-05-15 Apparatus and method for purifying waste water
DE2638910A DE2638910C2 (en) 1976-08-28 1976-08-28 Method and device for treating waste water

Publications (1)

Publication Number Publication Date
SE7705632L true SE7705632L (en) 1977-11-16

Family

ID=25770460

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7705632A SE7705632L (en) 1976-05-15 1977-05-13 PROCEDURE AND PLANT FOR WASTEWATER CLEANING

Country Status (16)

Country Link
JP (1) JPS52139257A (en)
AT (1) AT357115B (en)
AU (1) AU509536B2 (en)
BR (1) BR7703125A (en)
CA (1) CA1111158A (en)
CH (1) CH637905A5 (en)
DK (1) DK212277A (en)
EG (1) EG12563A (en)
ES (1) ES458813A1 (en)
FI (1) FI771542A (en)
FR (1) FR2351060A1 (en)
GB (1) GB1583074A (en)
IT (1) IT1086194B (en)
NL (1) NL7705328A (en)
NO (1) NO771696L (en)
SE (1) SE7705632L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439036A1 (en) * 1978-10-19 1980-05-16 Caviem Clarifier for water contg. mineral wastes - has feed box mixing in flocculant and filtration tank with detachable filter
JPS55129192A (en) * 1979-03-23 1980-10-06 Hoechst Ag Method and device for purifying waste water
CH660588A5 (en) * 1982-10-26 1987-05-15 Sulzer Ag METHOD FOR REMOVING DYE, PIGMENT AND / OR OPTICAL BRIGHTENER FROM SEWAGE.
JPH0688037B2 (en) * 1983-08-03 1994-11-09 栗田工業株式会社 How to treat human waste
JPS6094408A (en) * 1983-10-28 1985-05-27 Sumitomo Chem Co Ltd Treatment of polymer slurry
EP0344152B1 (en) * 1986-10-29 1990-12-19 MERAI, Josef Process and installation for dewatering waste water sludge
JPH02164499A (en) * 1988-12-15 1990-06-25 Nkk Corp Treatment of organic waste water
FR2648309B1 (en) * 1989-06-16 1991-12-27 So Ge Val Sa PROCESS FOR THE TREATMENT OF PIG HOLDERS AS WELL AS INSTALLATION ALLOWING THE IMPLEMENTATION OF THIS PROCESS

Also Published As

Publication number Publication date
BR7703125A (en) 1978-03-28
CH637905A5 (en) 1983-08-31
DK212277A (en) 1977-11-16
JPS52139257A (en) 1977-11-21
ES458813A1 (en) 1978-03-16
NO771696L (en) 1977-11-16
EG12563A (en) 1979-03-31
AU509536B2 (en) 1980-05-15
CA1111158A (en) 1981-10-20
FR2351060A1 (en) 1977-12-09
NL7705328A (en) 1977-11-17
IT1086194B (en) 1985-05-28
FR2351060B1 (en) 1980-03-07
AU2517277A (en) 1978-11-23
GB1583074A (en) 1981-01-21
FI771542A (en) 1977-11-16
AT357115B (en) 1980-06-10
ATA345977A (en) 1979-10-15

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Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 7705632-3

Effective date: 19861216