CN108367955B - Method for treating industrial waste water containing organic compounds - Google Patents

Method for treating industrial waste water containing organic compounds Download PDF

Info

Publication number
CN108367955B
CN108367955B CN201680051319.4A CN201680051319A CN108367955B CN 108367955 B CN108367955 B CN 108367955B CN 201680051319 A CN201680051319 A CN 201680051319A CN 108367955 B CN108367955 B CN 108367955B
Authority
CN
China
Prior art keywords
permeate
waste water
reverse osmosis
nanofiltration
stream
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.)
Active
Application number
CN201680051319.4A
Other languages
Chinese (zh)
Other versions
CN108367955A (en
Inventor
霍尔格·蒂勒尔特
克斯廷·斯坦泽
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.)
ThyssenKrupp AG
ThyssenKrupp Industrial Solutions AG
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Industrial Solutions 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
Application filed by ThyssenKrupp AG, ThyssenKrupp Industrial Solutions AG filed Critical ThyssenKrupp AG
Publication of CN108367955A publication Critical patent/CN108367955A/en
Application granted granted Critical
Publication of CN108367955B publication Critical patent/CN108367955B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/027—Nanofiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/029—Multistep processes comprising different kinds of membrane processes selected from reverse osmosis, hyperfiltration or nanofiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/16—Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/58—Multistep processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/12—Addition of chemical agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2649—Filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2676—Centrifugal separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2688—Biological processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2317/00—Membrane module arrangements within a plant or an apparatus
    • B01D2317/02—Elements in series
    • B01D2317/025—Permeate series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • 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
    • C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/101—Sulfur compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/163—Nitrates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/166—Nitrites
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/18—Cyanides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C02F2101/345—Phenols
    • 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
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • 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
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • 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
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
    • 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
    • C02F2209/14—NH3-N
    • 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
    • C02F2209/15—N03-N
    • 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
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • 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
    • C02F3/22—Activated sludge processes using circulation pipes
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
    • C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
    • 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

Abstract

The invention relates to a method for treating industrial waste water containing organic compounds, wherein the industrial waste water is biologically cleaned (4,8), during which the pollutants contained in the waste water are decomposed by means of bacteria, and wherein subsequently sludge is separated from the waste water that has been at least partially cleaned by means of biological methods using at least one membrane separation device (6,10,12, 15). According to the invention, the permeate extracted from the membrane separation device (6,10,12,15) is not drawn off in the form of clean water and discharged in liquid form to the environment, but is conveyed for use by a substance, whereby a wastewater-free process operation is achieved, wherein the permeate extracted from the membrane separation device (6,10,12,15) is conveyed at least partially to a metal production process and/or a metal working process and is used as a cooling of a residue, wherein at least a part of the residue contained in the permeate remains on the residue after cooling.

Description

Method for treating industrial waste water containing organic compounds
Technical Field
The invention relates to a method for treating industrial waste water containing organic compounds. Wherein the industrial waste water is subjected to a biological cleaning process in which contaminants contained in the waste water are decomposed by bacteria. The sludge is subsequently separated from the waste water which has been at least partially cleaned or precleaned by biological methods using at least one membrane separation device. The membrane separation device may be a device for ultrafiltration. For the definition of the concepts, characterization and differentiation of the different membrane separation processes, see the publication "Erfahrungen und anwendengstenozial der nanofilteration", german scientific and technical association standards scientific forum (VDI Wissensforum) "Membrantechnik in der procesisssingdustrie", hanowei, 11 months 2007 by samhaber.
Background
Highly contaminated wastewater is accumulated in industrial facilities such as coke ovens, steel mills and chemical plants. Such highly contaminated coking wastewater is produced in coking ovens, for example in gas treatment.
WO 2012/139917 a2 relates to a method of this type, in which coking wastewater contaminated with nitrogen compounds, cyanides, phenols and sulfides is cleaned in a multistage manner by biological and chemical processes. The coking wastewater removes most harmful substances which obstruct nitrification in a detoxification reactor in the multi-stage biological cleaning process. Followed by a first membrane filtration, the permeate stream of which is cleaned by nitrification and subsequent denitrification and post-sweep. A preferred embodiment of a detoxification reactor or nitration reactor suitable for the known process is described in DE 19842332B 4.
In this process known from WO 2012/139917 a2, the permeate stream of the first membrane filtration is cleaned by nitrification and subsequent denitrification followed by a post-sweep, wherein a second ultrafiltration is carried out in a purification tank after denitrification. The permeate obtained in the second ultrafiltration can be discharged into the water body according to the limit value of Germany "regulations on the requirements for discharging wastewater into water-annex 46 hard coal coking (BGBI I2004, 1167-.
WO 94/03402 a1 describes a method for biological treatment of waste water in which three steps are provided for decomposing the solid fraction, wherein the liquid from the third decomposition step can be used as flushing liquid for toilets.
Disclosure of Invention
Against this background, the object of the present invention is to provide a process for treating industrial waste water containing organic compounds, which is characterized by a very low environmental burden.
The subject of the invention and the solution to this object are methods according to claim 1.
Starting from this process, it is provided according to the invention that the permeate withdrawn from the membrane separation device and the second ultrafiltration is not taken off as clean water and discharged to the environment in liquid form, but is fed for substance use and thus to a wastewater-free process operation, wherein the permeate withdrawn from the membrane separation device is at least partially fed to a metal production and/or metal processing and used for cooling the residue, wherein at least some of the residual substances contained in the permeate remain on the residue after cooling.
Starting from the basic design of the substance use, different methods can be followed, wherein the permeate extracted from the membrane separation device, the second ultrafiltration, can be used for different purposes and can be distributed to different pure or differently harmful substance-containing substance streams for this purpose by means of other membrane separation methods, such as nanofiltration, reverse osmosis, etc.
It is also possible, for example, to feed the permeate withdrawn from the membrane separation plant in its entirety to a metal production process and/or a metal working process, in which process residues are produced and the permeate, which is distributed and treated further if necessary, is used for cooling the residues, wherein at least part of the residual substances contained in the permeate remains on the residues after cooling. The residue is then removed together with the residual substances deposited thereon as a solid, wherein, depending on the type and classification of the contaminants, techniques can also be used in addition to the precipitation of the residue.
A particularly simple method operation is achieved when all permeate is used for cooling the residue in the manner described.
According to an alternative embodiment of the invention, at least a part of the permeate withdrawn from the membrane separation device is subjected to a further treatment. In this case, according to a preferred embodiment of the invention, the permeate withdrawn from the membrane separation device is at least partially subjected to reverse osmosis and is divided into a reverse osmosis permeate flow and a retentate flow, wherein the reverse osmosis permeate flow has a high degree of cleanliness and can also be used for relatively demanding industrial purposes due to the low content of harmful substances. The reverse osmosis permeate stream may be used, for example, as purified process water (make-up water). The cleaned process water can be used for example for scrubbing in a coking plant, wherein the industrial waste water to be cleaned is subsequently produced and the circuit is integrated. It is also possible, for example, to use a flow of reverse osmosis permeate having a high degree of cleanliness as cooling water in an open cooling water system, whereby no excessive contamination of the cooling water system or excessive enrichment of harmful substances occurs during the evaporation of the cooling water.
With regard to the chemical composition which occurs in particular in coking wastewater and the membranes which are provided for reverse osmosis within the framework of the invention, it is provided according to a preferred embodiment of the invention that, before reverse osmosis, the permeate which is withdrawn from the membrane separation apparatus is admixed with an acid in order to reduce the pH. For example, a suitable amount of sulfuric acid may be added to the permeate withdrawn from the membrane separation apparatus.
The oxidizable organic content (CSB fraction), nitrogen-containing components and salts, such as chlorides, are retained using reverse osmosis, so that the reverse osmosis permeate stream can be used in the manner described. The concentrated reverse osmosis retentate stream contains a higher proportion of oxidizable organic Content (CSB), nitrogen and chloride than the permeate previously withdrawn from the membrane separation unit. It is therefore advantageous to further separate the reverse osmosis retentate stream. For this purpose, according to one advantageous embodiment, it is provided that the reverse osmosis retentate stream is subjected to nanofiltration and is divided into a nanofiltration permeate stream and a nanofiltration retentate stream. The nanofiltration permeate stream may be used for temperature reduction of the residue, for example, as previously described.
In particular, oxidizable organic Contents (CSB) and nitrogen-containing components can be largely retained by means of nano-penetration. In contrast, chloride and other salts enter the nanofiltration permeate stream, wherein chloride-containing salt residues remain on the residue in the preferred use of the nanofiltration permeate stream for cooling the residue. The residue with salt residues can be easily removed or used further.
The nanofiltration retentate stream can be sent to flocculation, precipitation and activated carbon treatment. By means of this flocculation and precipitation stage, for example, oxidizable organic Contents (CSB) can be largely removed, even if these substances have previously not been broken down by biological cleaning.
The water retained through the flocculation stage, the sedimentation stage and the activated carbon treatment stage can be conveyed to a biological cleaning process arranged before.
The sludge produced in the precipitation and activated carbon treatment is preferably collected in a settling tank, wherein the liquid phase that precipitates in the settling tank is extracted. The liquid phase may be added, for example, to the nanofiltration permeate stream, re-routed to flocculation, sedimentation and activated carbon treatment stages or placed in a prior biological cleaning process.
The sludge settled out in the settling tank is preferably conveyed to a centrifuge for further dewatering. In principle, in the overall process operation, different sludges can be treated separately by their respectively associated centrifuges or alternatively by a common centrifuge, wherein in the latter case the individual streams can advantageously be separated from one another by switching. The centrate may be fed back into the settling tank.
If the industrial waste water is present in the coking plant in the form of coking waste water, the settled sludge can be fed together with raw coal into a coke oven cell to achieve further chemical conversions in a substantially closed cycle.
The invention can be carried out in particular after a biological cleaning process consisting of detoxification, a first membrane filtration (e.g. ultrafiltration), nitrification, denitrification, post-aeration and a second membrane filtration with nitrification and denitrification (e.g. ultrafiltration), such as those known from WO 2012/139917 a 2. Coking wastewater, which contains nitrogen-containing compounds, cyanides, phenols and sulfides, is fed as industrial wastewater. The coking wastewater is then conveyed to a multistage biological cleaning process, for which harmful substances that hinder nitrification are at least partially removed in a detoxification reactor, wherein a first membrane filtration is subsequently carried out and wherein the permeate stream of the first membrane filtration is cleaned by nitrification and subsequent denitrification.
According to a further aspect of the invention, the ammonium and/or nitrate and/or nitrite content is determined between two process steps which follow one another by means of a measuring sensor, wherein the method steps are of fundamental, independent and inventive significance in connection with biological cleaning in general.
Up to now, costly wet chemical analyses are carried out in bioreactors for biological cleaning and in subsequent process steps to determine the ammonium and nitrate content. A partial liquid stream is extracted and analyzed. In addition to the high acquisition and production costs for special adaptation to local conditions, high operating and maintenance costs also occur.
In contrast to wet-chemical analysis, provision is made within the framework of the invention for the measuring sensor to determine the ammonium content and/or the nitrate content, so that no further chemicals are required and no further costs for operating the device arise.
In this respect, the invention is based on the recognition that at different locations of the biological cleaning process there is a sludge content that is sufficiently small to enable sensor measurements. This applies in particular to the industrial waste water which is conveyed to the biological cleaning process before it is mixed with the sludge containing bacteria. Furthermore, the measurement with the sensor is also possible in particular when membrane-technology sludge separation is carried out after the cleaning phase. For example, the ammonium content can be measured with a potentiometer by means of an ion-selective electrode. The nitrate and nitrite contents can be determined, for example, by means of sensors according to the two-beam ultraviolet absorption method (Zweistrahl-UV-adsorptionverfahren).
Drawings
The invention is explained below by means of an illustration showing only one embodiment. FIG. 1 shows a flow diagram of an apparatus for treating industrial waste water containing organic compounds.
Detailed Description
The industrial waste water can be, in particular, coking waste water, which is contaminated with nitrogen-containing compounds, cyanides, phenols and sulfides. Other oxidizable organic contents may also be included. Industrial waste water is conveyed to the biological cleaning process through a collection tank 1 via an input pipe 2. Furthermore, a supply device 3 for an oxidizing agent in gaseous form, such as air, is provided.
The industrial waste water is conveyed by means of an inlet line 2 to a detoxification reactor 4, which may be, for example, a jet zone loop reactor (SZR reactor). The basic structure of such an SZR reactor is described in DE 19842332B 4.
The detoxification reactor 4 has an upper reaction zone, a lower material transport zone and a reflux device 5 for liquid reflux. Pipes are arranged in the reaction zone and the material transport zone of the detoxification reactor 4, respectively. The function of the tubes is respectively to support the circulation of the liquid forming a loop. Between the two regions, a two-substance nozzle is furthermore provided, in which the liquid from the return device 5 and the feed line 2 is mixed and turbulently fluidized with air from the conveying device 3.
Cyanide and other harmful substances that hinder nitrification are biodegraded by the bacteria present in the detoxification reactor 4.
A first ultrafiltration device 6 is connected downstream of the detoxification reactor 4. The sludge contained in the stream withdrawn from the detoxification reactor 4 is separated and returned by means of the first filtration device 6, while the permeate of the first ultrafiltration device 6 is transferred via the intermediate tank 7 to the nitrification reactor 8 as a second stage of biological cleaning.
The waste water stream then passes from the nitrification reactor 8 through a tank 9 subdivided into a denitrification section and a post-sweep section to a second ultrafiltration unit 10. The post-purge utilizes air to blow. The sludge separated off as retentate from the second ultrafiltration apparatus 10 is conducted back to the nitration reactor 8, while an acid, for example sulfuric acid (H) is initially added to the permeate withdrawn from the second ultrafiltration apparatus 10 in a mixing tank 112SO4) And then directed to the reverse osmosis apparatus 12. Salts, such as chlorides, oxidizable organic content and nitrogen-containing components are retained in the reverse osmosis apparatus 12. The flow of reverse osmosis permeate 13 extracted from the reverse osmosis plant 12 has a high degree of cleanliness and can be used, for example, as make-up water for an open cooling system or, on the other hand, as process water (make-up water).
In contrast, the concentrated reverse osmosis retentate stream 14 is fed to a nanofiltration device 15 and is separated into a nanofiltration permeate stream 16 and a nanofiltration retentate stream 17. Oxidizable organic content (CSB component) as well as nitrogen-containing components can be retained using the nanofiltration device 15. Salts, such as chloride, instead enter the nanofiltration permeate stream 16, such that the nanofiltration permeate stream 16 has a high chloride content. It may be preferred to provide a slag cooling unit in the steel plant as a drain for the salt-containing or chloride-containing nanofiltration permeate stream 16. Here, salt residues remain on the residue. The residue with salt residues can be removed without problems and used further.
The nanofiltration retentate stream 17 is passed to a flocculation, precipitation and activated carbon treatment stage 18. The water cleaned in the flocculation, sedimentation and activated carbon treatment stage 18 can then be conveyed via a connecting line 19 to a biological cleaning process arranged before, in particular to the nitrification reactor 8.
Instead, the sludge precipitated in the flocculation and precipitation stage is transferred to a settling tank 20, wherein the precipitated liquid phase can be fed to the nanofiltration permeate stream 16 and/or the flocculation and precipitation stage 18 and/or the connecting line 19 via respective lines 21a, 21b, 21 c.
The sludge that is separated out during the entire process can be dewatered in a known manner by means of several centrifuges 22. Alternatively, a common centrifuge 22 may be used, wherein switching between different streams is possible. The sludge dewatered by the centrifuge can be added, for example, to a coke oven battery together with the raw coal.
In the method according to the invention, the ammonium content and the nitrite content can be determined at suitable locations using simple measuring sensors. The measurement with the measuring sensor is only possible when the separation of sludge has previously been carried out in the membrane separation process. Such measurement sensors may be used, for example, in collection tank 1, intermediate tank 7, mixing tank 11, reverse osmosis permeate stream 13, reverse osmosis retentate stream 14, nanofiltration permeate stream 16 and nanofiltration retentate stream 17.

Claims (7)

1. A process for treating industrial waste water containing organic compounds,
wherein the industrial waste water is subjected to a biological cleaning process in which contaminants contained in the industrial waste water are decomposed by bacteria, and
wherein the sludge is subsequently separated from the waste water which has been at least partially cleaned by biological methods using at least one membrane separation device,
characterized in that the permeate extracted from the membrane separation device is not drawn off as cleaned water and discharged in liquid form to the environment, but is conveyed for substance use and thus a wastewater-free process operation is obtained, wherein the permeate extracted from the membrane separation device is at least partially subjected to reverse osmosis and is divided into a reverse osmosis permeate stream (13) and a reverse osmosis retentate stream (14), the reverse osmosis retentate stream (14) is subjected to nanofiltration and is divided into a nanofiltration permeate stream (16) and a nanofiltration retentate stream (17), wherein the oxidizable permeate stream (13) is conveyed to the metal production process and/or the metal processing process by means of reverse osmosis, and the organic content, the nitrogen-containing component and the salt are retained; and retaining the oxidizable organic content and the nitrogen-containing component by means of nanofiltration, whereby the nanofiltration permeate stream (16) is used for cooling of a residue, wherein at least a part of the salt residues contained in the permeate remain on the residue after cooling, wherein the content of ammonium and/or nitrite is determined between two process steps following one another by means of a measuring sensor.
2. The method according to claim 1, characterized in that the reverse osmosis permeate stream (13) is used as purified process water or as cooling water in an open cooling water system.
3. A process according to claim 1, characterised in that the permeate withdrawn from the membrane separation unit is admixed with an acid to lower the pH before being subjected to reverse osmosis.
4. A method according to claim 1, characterized in that the nanofiltration retentate stream (17) is conveyed to a flocculation, precipitation stage containing activated carbon.
5. A method according to claim 4, characterised in that the water cleaned in the flocculation, sedimentation and activated carbon treatment stage (18) is conveyed to a biological cleaning process.
6. A method according to claim 5, characterised in that the sludge produced in the flocculation, precipitation and activated carbon treatment stage (18) is transferred to a settling tank (20), wherein the liquid phase that precipitates out in the settling tank is added to the nanofiltration permeate stream (16), or to the flocculation, precipitation and activated carbon treatment stage (18) or to a biological cleaning process.
7. The method according to any one of claims 1 to 6, characterized in that coking wastewater contaminated with nitrogen-containing compounds, cyanides, phenols and sulphides is fed as industrial wastewater containing organic compounds, wherein the coking wastewater is largely freed of harmful substances which hinder nitrification in a detoxification reactor in a multistage biological cleaning process.
CN201680051319.4A 2015-09-04 2016-09-02 Method for treating industrial waste water containing organic compounds Active CN108367955B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015114881.1 2015-09-04
DE102015114881.1A DE102015114881A1 (en) 2015-09-04 2015-09-04 Process for the treatment of industrial wastewater containing organic compounds
PCT/EP2016/070758 WO2017037254A1 (en) 2015-09-04 2016-09-02 Method for treating industrial wastewater containing organic compounds

Publications (2)

Publication Number Publication Date
CN108367955A CN108367955A (en) 2018-08-03
CN108367955B true CN108367955B (en) 2022-03-04

Family

ID=56852284

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201680051319.4A Active CN108367955B (en) 2015-09-04 2016-09-02 Method for treating industrial waste water containing organic compounds

Country Status (3)

Country Link
CN (1) CN108367955B (en)
DE (1) DE102015114881A1 (en)
WO (1) WO2017037254A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107915354A (en) * 2018-01-04 2018-04-17 江苏科行环保科技有限公司 A kind of desulfurization wastewater zero-emission and resource utilization device and method
CN108455773A (en) * 2018-04-11 2018-08-28 南京友智科技有限公司 A kind of system and method for the industrially desulfurized waste water of processing
CN109137001B (en) * 2018-10-09 2019-09-17 广东嘉元科技股份有限公司 A kind of preparation process of electrolytic copper foil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102502994A (en) * 2011-11-09 2012-06-20 北京纬纶华业环保科技股份有限公司 Method and system for treating cyanide-containing wastewater at low concentration
CN202849215U (en) * 2012-10-26 2013-04-03 武汉钢铁(集团)公司 Coking wastewater deep treatment device
CN104016547A (en) * 2014-06-19 2014-09-03 中冶建筑研究总院有限公司 Advanced treatment and zero emission process for coking wastewater

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT389238B (en) * 1987-08-18 1989-11-10 Simmering Graz Pauker Ag METHOD FOR TREATING THE SMOKE GASES AND COMBUSTION RESIDUES OF A COMBUSTION PLANT, IN PARTICULAR WASTE COMBUSTION PLANT
DK0654015T3 (en) * 1992-08-10 1997-06-23 Protec Partner F R Umwelttechn Process and apparatus for biological treatment of organically loaded wastewater and organic waste
DE19842332B4 (en) 1998-09-16 2011-08-11 A.S.T. Abwassersysteme Systemtechnologie GmbH, 28359 Device for the biological purification of wastewater
EP1293485B1 (en) * 2002-01-31 2006-04-05 Ford Global Technologies, LLC Method for treating industrial waste water
DE102007004310A1 (en) * 2007-01-29 2008-07-31 Siemens Ag Cleaning process for water polluted with sulfate and heavy metal ions involves adding cleaning substance to reduce concentration so that ions are precipitated
DE102011001962A1 (en) 2011-04-11 2012-10-11 Thyssenkrupp Uhde Gmbh Process and plant for biological treatment of coking plant wastewater

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102502994A (en) * 2011-11-09 2012-06-20 北京纬纶华业环保科技股份有限公司 Method and system for treating cyanide-containing wastewater at low concentration
CN202849215U (en) * 2012-10-26 2013-04-03 武汉钢铁(集团)公司 Coking wastewater deep treatment device
CN104016547A (en) * 2014-06-19 2014-09-03 中冶建筑研究总院有限公司 Advanced treatment and zero emission process for coking wastewater

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Coking wastewater treatment for industrial reuse purpose:Combining biological processes with ultrafiltration,nanofiltration and reverse osmosis;XUEWEN JIN ET AL;《JOURNAL OF ENVIRONMENTAL SCIENCES》;20130801;1565-1574 *
Modern waste water treatment in coke making plants - A new way for water recycling!;Kerstin Holger Stenzel ET Al;《www.thyssenkrupp-industrial-solutions.com》;20150527;1-9 *

Also Published As

Publication number Publication date
WO2017037254A1 (en) 2017-03-09
DE102015114881A1 (en) 2017-03-09
CN108367955A (en) 2018-08-03

Similar Documents

Publication Publication Date Title
Brinkmann et al. Best available techniques (BAT) reference document for common waste water and waste gas treatment/management systems in the chemical sector
US10065871B2 (en) Wastewater treatment system
KR101628281B1 (en) System for waste water trust management
CN104803544A (en) Treatment method of livestock waste water and device thereof
CN108367955B (en) Method for treating industrial waste water containing organic compounds
CN101746923A (en) Coking wastewater deep treatment and reuse process and equipment thereof
CN104671611B (en) The process of heavy metal in a kind of process electroplating wastewater up to standard recycle-water
CN103717539B (en) Method and apparatus for the biological cleaning of coking plant wastewater
JP2016013537A (en) Method and apparatus for treating humin-containing waste water
CN101781064A (en) Process for advanced treatment of gas wastewater
RU2569153C1 (en) Integrated waste treatment plant (versions)
CZ2004868A3 (en) Method for treating liquids, especially for purifying contaminated water and installation for making the same
RU184500U1 (en) DEVICE FOR DETOXICATION OF SOIL CONTAMINATED BY MOUSE-CONTAINING SUBSTANCES
CN203683308U (en) Advanced treatment system of petrochemical wastewater
KR20200079317A (en) Plants and waste treatment methods for the treatment of wastes, especially wastes from medical analysis laboratories
RU62599U1 (en) SEWAGE TREATMENT PLANT
KR20100088283A (en) High effective treatment apparatus and method of sewage and wastewater using membrane
JPH11347595A (en) Water purifying treatment equipment and concentration sludge thereof
DE19600774A1 (en) Removal of cyanide from process water
FI103107B (en) Method for purifying waste water
Puszczało et al. Treatment of wastewater from the confectionery industry using pressure membrane processes
CN211620193U (en) Skid-mounted system for high-risk wastewater treatment
EP3673977B1 (en) Method for removal of harmful sulphurous compounds from gas mixtures
JP2020011197A (en) Intermediate processing system of mixed wastewater and intermediate processing method of mixed wastewater
CN216236555U (en) Sulfur-containing organic wastewater treatment system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant