CN105110539A - Novel printery high-concentration slurry wastewater treatment technique containing membrane filtration unit - Google Patents

Novel printery high-concentration slurry wastewater treatment technique containing membrane filtration unit Download PDF

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Publication number
CN105110539A
CN105110539A CN201510532797.4A CN201510532797A CN105110539A CN 105110539 A CN105110539 A CN 105110539A CN 201510532797 A CN201510532797 A CN 201510532797A CN 105110539 A CN105110539 A CN 105110539A
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treatment
waste water
carry out
concentration slurry
ammonia
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CN201510532797.4A
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Chinese (zh)
Inventor
蒋良秋
郭小斌
向伟
欧阳滔
吴佐林
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CHANGSHA XIN XI FORMER ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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CHANGSHA XIN XI FORMER ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Priority to CN201510532797.4A priority Critical patent/CN105110539A/en
Publication of CN105110539A publication Critical patent/CN105110539A/en
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Abstract

The invention relates to a novel printery high-concentration slurry wastewater treatment technique containing a membrane filtration unit, which comprises the following steps: collecting high-concentration slurry wastewater to a water collecting tank through pipelines, channels and ditches, and adding a reinforcer to perform reinforced adjustment; introducing a circulating tank, lifting by a pressure pump, and filtering through a secondary filter; pretreating with an inorganic ceramic membrane; introducing the pretreated penetrant into a filtrate collecting tank, carrying out ammonia nitrogen air stripping treatment by an ammonia nitrogen air stripping system, and sending into a subsequent biochemical system to perform anoxic, anaerobic and aerobic treatment; and introducing the concentrated solution into a concentrated solution collecting tank, solidifying, sending into a filter press to perform pressure filtration, transporting the filter cake out for landfilling, sending the filtrate into the ammonia nitrogen air stripping system, and sending into the biochemical system to perform biochemical treatment. By combining the obvious-energy-saving-effect membrane treatment method with the biochemical technique, the technique provided by the invention has the advantages of low energy consumption and favorable treatment effect, and does not generate secondary pollution.

Description

A kind of printing and dyeing mill's high concentration slurry new process for treating waste water containing membrane filter unit
Technical field
The present invention relates to a kind of waste water treatment process, particularly relate to a kind of printing and dyeing mill's high concentration slurry new process for treating waste water containing membrane filter unit.
Background technology
Printing and dyeing mill adopts a kind of composite chemical medicament to carry out fixation usually, and high concentration slurry waste water is a kind of high-concentration waste water produced in the fixation stage.High concentration slurry wastewater biodegradability extreme difference, viscosity is large especially, COD crbetween 30000mg/L ~ 60000mg/L, ammonia nitrogen between 2000mg/L ~ 5000mg/L, BOD 5between 3000mg/L ~ 6000mg/L.Pollution substance in high concentration slurry waste water, is mainly derived from the organic compound of stripping in printing and dyeing sizing process, the pharmaceutical chemicals of remnants and the fiber fines of loss.The organic compound content dissolved depends on sizing technique and raw material type.In general, the pollution load of high concentration slurry waste water increases with the increase of printing and dyeing quantity, increases with the increase of consumption of chemical agent.This strand of waste water is from biochemistry ratio, and biodegradability is very poor, and ammonia-nitrogen content is very high.Obviously, if do not processed just directly discharge, serious pollution will inevitably be caused to environment.
Printing and dyeing mill's high concentration slurry waste water contains a kind of specific compound PIJ raw material due to it, and intractability is large, and dropped into the urea of 10% in slurry, so cause its ammonia-nitrogen content extra-high, its intractability is far longer than general printing and dyeing industrial waste water.Visual inspection viscosity is very large, and traditional treatment method of the prior art such as coagulating sedimentation, adjust pH, light electrolysis, catalyzed oxidation etc. all do not have positive effect.And printing and dyeing high concentration slurry waste water is all difficult to mix with other dyeing waste water in any proportion, adopt the method for distillation to process, but working cost is high, therefore in the urgent need to providing a kind of novel process to replace traditional treatment method.
Summary of the invention
The object of the present invention is to provide a kind of printing and dyeing mill's high concentration slurry new process for treating waste water containing membrane filter unit, thus solve Problems existing in background technology.
Technical problem solved by the invention realizes by the following technical solutions:
Containing printing and dyeing mill's high concentration slurry new process for treating waste water of membrane filter unit, specifically comprise the steps:
(1) high concentration slurry waste water is collected into water collecting basin through pipeline, channel, raceway groove, adds potent dose and carry out strengthening adjustment;
(2) introduce circulatory pool again, filtered by accurate filter again after topping-up pump promotes;
(3) inorganic ceramic film is adopted to carry out pre-treatment again, use crossflow filtration technique, namely material flows through from the internal surface of film tube passage, penetrating fluid then flows out from the outer surface of film pipe, penetrating fluid is vertical with the flow direction of material, the filtration pressure of cross flow filter is 0.1 ~ 0.4MPa, and membrane filtration overpressure difference is 0.05 ~ 0.25MPa, and filtration average flux is 30 ~ 100L/m 2h, material flows through from the internal surface of inorganic ceramic membrane channel, and low concentration wastewater then flows out from the outer surface of film pipe and forms penetrating fluid, and the pollutent that tunicle pipe retains forms concentrated solution;
(4) penetrating fluid is introduced filtrate collection pond and carry out ammonia-nitrogen desorption process by ammonia nitrogen stripping system, namely stripping and absorption principle is utilized, assisted by blower fan and the ammonia in waste water is separated, then introduce biochemical system and carry out qualified discharge after anoxic, anaerobism, aerobic treatment;
(5) concentrated solution retained is introduced dope collecting tank and carry out distillation process or solidification treatment, distillation process is undertaken distilling by concentrated solution and is solidified by pollutent; Solidification treatment adds solidifying agent by concentrated solution and is cured process, solidification treatment liquid enters plate-and-frame filter press again to carry out press filtration and obtains filter cake and filtrate, harmless treatment is carried out in filter cake outward transport, filtrate is introduced ammonia nitrogen stripping system and carry out ammonia-nitrogen desorption process, utilize stripping and absorption principle, assisted by blower fan and the ammonia in waste water is separated, then enter biochemical system and carry out qualified discharge after biochemical treatment.
The dosage of potent dose is 100 ~ 1000ppm, and high concentration slurry waste water, before entering inorganic ceramic film, suitably adds potent dose, to strengthen the filter effect of inorganic ceramic film;
The aperture of inorganic ceramic film is 0.001 ~ 0.2 μm.
The filtering layer material of inorganic ceramic film is pellumina or zirconium oxide film or oxidation titanium film.
The concentrated solution that inorganic ceramic film retains to be the particle diameter of macromole and particle be emulsus and the solia particle of more than 0.001 μm.The particle diameter that inorganic ceramic film retains macromole or particle is emulsus or the solia particle of more than 0.001 μm, greatly reduces the dosage of chemical agent, the BOD reduced in waste water 5, COD crthe load of content and subsequent biochemical process, improves the biodegradability of waste water.
Biochemical treatment mode includes but not limited to traditional activated sludge process, AB, SBR, UASB, A/O, A2/O, A/O2, BAF, biological adsorption etc., and the array mode of these modes.
The realization of inorganic ceramic film back flushing employing autompulse online backflushing cleaning device is automatically online carries out timing counterflush to film surface, namely in filtration procedure, from permeate side, one external force is applied to penetrating fluid, a certain amount of penetrating fluid high-speed reverse is made to wear supporting layer and the separating layer of filmed passing tube, under standard state, penetrating fluid first flows through separating layer to flow through supporting layer again, the cake layer on separating layer surface is washed from film pipe and the concentrated phase entered in sepn process, alleviate film surface pollution, reduce resistance of membrane filtration, improve membrane flux, extend the matting cycle of film.
The cleaning way of inorganic ceramic film is matting, and matting adopts acid, alkali, oxygenant and municipal tap water to make scavenging solution, and cleaning node carries out according to lowest flux set(ting)value.Contaminated film pipe adopts special agent to clean, and to recover the flux of film pipe, the throughput of cleaning caudacoria can recover 98%.
The present invention has following beneficial effect:
The present invention adopts inorganic ceramic film separation of high-concentration slurry wastewater, through the penetrating fluid of separating treatment after ammonia-nitrogen desorption, enters biochemical system and processes rear qualified discharge further.Adopt crossflow filtration technique, penetrating fluid is vertical with the flow direction of material, reduces filter cake and is formed, substantially increase membrane flux, reduce filtration resistance and energy consumption.And significantly reduce BOD 5, COD cr, ammonia nitrogen content, improve the biodegradability of this waste water, reduce energy consumption.
The Inorganic Ceramic Membranes that the present invention adopts is the method utilizing the selective penetrated property of filterableness film to concentrate impurities in water, be separated, it has, and device is simple, energy consumption is low, floor space is little, at high temperature can carry out, not produce the features such as secondary pollution in, obvious energy conservation high without phase change, convenient operation and control, processing efficiency and production process, thus be widely used in the treatment of waste water.After inorganic ceramic film filtering separation, COD crvalue reduces to 8116mg/L by original 33800mg/L, BOD 5reduce to 1733mg/L by 6120mg/L, ammonia nitrogen reduces to 1963mg/L by original 3230mg/L, and pollutent rejection is respectively COD cr76%, BOD 572%, ammonia nitrogen 39%, biochemical than rising to 0.214 by original 0.181, the biodegradability being separated disposed slurry waste water through membrane filtration is significantly improved, and slurry wastewater pollutent can be concentrated 4-5 doubly.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Hunan printing and dyeing mill adopts a kind of composite chemical medicament to carry out fixation, at a kind of high concentration slurry waste water that the fixation stage produces, and the water quality situation of high concentration slurry waste water: COD crbetween 30000mg/L ~ 60000mg/L, ammonia nitrogen between 2000mg/L ~ 5000mg/L, BOD 5between 3000mg/L ~ 6000mg/L, the biodegradability extreme difference of this waste water, viscosity is large especially.
Embodiment 1:
Adopt present invention process to process above-mentioned waste water, specifically comprise the steps:
(1) high concentration slurry waste water is collected into water collecting basin through pipeline, channel, raceway groove, add potent dose and carry out strengthening adjustment, the dosage of potent dose is 100ppm;
(2) introduce circulatory pool again, filtered by accurate filter again after topping-up pump promotes;
(3) inorganic ceramic film is adopted to carry out pre-treatment again, use crossflow filtration technique, namely material flows through from the internal surface of membrane channel, penetrating fluid then flows out from the outer surface of film pipe, penetrating fluid is vertical with the flow direction of material, the filtration pressure of cross flow filter is 0.1MPa, and membrane filtration overpressure difference is 0.05MPa, and filtration average flux is 30L/m 2h, material flows through from the internal surface of inorganic ceramic membrane channel, and low concentration wastewater then flows out from the outer surface of film pipe and forms penetrating fluid, and the pollutent that tunicle pipe retains forms concentrated solution, pore size of inorganic ceramic membrane is 0.001 μm, and the filtering layer material of inorganic ceramic film adopts pellumina;
(4) penetrating fluid is introduced filtrate collection pond and carry out ammonia-nitrogen desorption process by ammonia nitrogen stripping system, namely stripping and absorption principle is utilized, assisted by blower fan and the ammonia in waste water is separated, then introduce biochemical system and carry out qualified discharge after anoxic, anaerobism, aerobic treatment;
(5) concentrated solution is introduced dope collecting tank and be cured process, add solidifying agent by concentrated solution and be cured process, enter plate-and-frame filter press again to carry out press filtration and obtain filter cake and filtrate, harmless treatment is carried out in filter cake outward transport, filtrate is introduced ammonia nitrogen stripping system and carry out ammonia-nitrogen desorption process, utilize stripping and absorption principle, assisted by blower fan and the ammonia in waste water is separated, then enter biochemical system and carry out qualified discharge after biochemical treatment.
Embodiment 2:
Adopt present invention process to process above-mentioned waste water, specifically comprise the steps:
(1) high concentration slurry waste water is collected into water collecting basin through pipeline, channel, raceway groove, add potent dose and carry out strengthening adjustment, the dosage of potent dose is 500ppm;
(2) introduce circulatory pool again, filtered by accurate filter again after topping-up pump promotes;
(3) inorganic ceramic film is adopted to carry out pre-treatment again, use crossflow filtration technique, namely material flows through from the internal surface of membrane channel, penetrating fluid then flows out from the outer surface of film pipe, penetrating fluid is vertical with the flow direction of material, the filtration pressure of cross flow filter is 0.3MPa, membrane filtration overpressure difference is 0.15MPa, filtration flux is 70L/m2h, material flows through from inorganic ceramic film surface, low concentration wastewater then flows out from the outer surface of film pipe and forms penetrating fluid, the pollutent that tunicle pipe retains forms concentrated solution, pore size of inorganic ceramic membrane is 0.08 μm, the filtering layer material of inorganic ceramic film adopts zirconium oxide film,
(4) penetrating fluid is introduced filtrate collection pond and carry out ammonia-nitrogen desorption process by ammonia nitrogen stripping system, namely stripping and absorption principle is utilized, assisted by blower fan and the ammonia in waste water is separated, then introduce biochemical system and carry out qualified discharge after anoxic, anaerobism, aerobic treatment;
(5) concentrated solution is introduced dope collecting tank and carry out distillation process, undertaken distilling by concentrated solution and pollutent is solidified.
Embodiment 3:
Adopt present invention process to process above-mentioned waste water, specifically comprise the steps:
(1) high concentration slurry waste water is collected into water collecting basin through pipeline, channel, raceway groove, add potent dose and carry out strengthening adjustment, the dosage of potent dose is 1000ppm;
(2) introduce circulatory pool again, filtered by accurate filter again after topping-up pump promotes;
(3) inorganic ceramic film is adopted to carry out pre-treatment again, use crossflow filtration technique, namely material flows through from the internal surface of membrane channel, penetrating fluid then goes out from the outer side surface low of film pipe, penetrating fluid is vertical with the flow direction of material, the filtration pressure of cross flow filter is 0.4MPa, membrane filtration overpressure difference is 0.25MPa, filtration flux is 100L/m2wh, material flows through from the internal surface of inorganic ceramic membrane channel, low concentration wastewater then flows out from the outer surface of film pipe and forms penetrating fluid, the pollutent that tunicle pipe retains forms concentrated solution, pore size of inorganic ceramic membrane is 0.2 μm, the filtering layer material of inorganic ceramic film adopts oxidation titanium film,
(4) penetrating fluid is introduced filtrate collection pond and carry out ammonia-nitrogen desorption process by ammonia nitrogen stripping system, namely stripping and absorption principle is utilized, assisted by blower fan and the ammonia in waste water is separated, then introduce biochemical system and carry out qualified discharge after anoxic, anaerobism, aerobic treatment;
(5) concentrated solution is introduced dope collecting tank and be cured process, solidifying agent is added through solidification treatment by concentrated solution, enter plate-and-frame filter press again to carry out press filtration and obtain filter cake and filtrate, filter cake is transported outward landfill, filtrate is introduced ammonia nitrogen stripping system and carry out ammonia-nitrogen desorption process, utilize stripping and absorption principle, assisted by blower fan and the ammonia in waste water is separated, then enter biochemical system and carry out qualified discharge after biochemical treatment.
After inorganic ceramic film filtering separation, COD crvalue reduces to 8116mg/L by original 33800mg/L, BOD 5reduce to 1733mg/L by 6120mg/L, ammonia nitrogen reduces to 1963mg/L by original 3230mg/L, and pollutent rejection is respectively COD cr76%, BOD 672%, ammonia nitrogen 39%, biochemical than rising to 0.214 by original 0.181, the biodegradability being separated disposed slurry waste water through membrane filtration is significantly improved, and slurry wastewater pollutent can be concentrated 4-5 doubly.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (4)

1., containing printing and dyeing mill's high concentration slurry new process for treating waste water of membrane filter unit, it is characterized in that: specifically comprise the steps:
(1) high concentration slurry waste water is collected into water collecting basin through pipeline, channel, raceway groove, adds potent dose and carry out strengthening adjustment;
(2) introduce circulatory pool again, filtered by accurate filter again after topping-up pump promotes;
(3) inorganic ceramic film is adopted to carry out pre-treatment again, use crossflow filtration technique, namely material flows through from the internal surface of film tube passage, penetrating fluid then flows out from the outer surface of film pipe, penetrating fluid is vertical with the flow direction of material, the filtration pressure of cross flow filter is 0.1 ~ 0.4MPa, and membrane filtration overpressure difference is 0.05 ~ 0.25MPa, and filtration average flux is 30 ~ 100L/m 2h, material flows through from the internal surface of inorganic ceramic membrane channel, and low concentration wastewater then flows out from the outer surface of film pipe and forms penetrating fluid, and the pollutent that tunicle pipe retains forms concentrated solution;
(4) penetrating fluid is introduced filtrate collection pond and carry out ammonia-nitrogen desorption process by ammonia nitrogen stripping system, namely stripping and absorption principle is utilized, assisted by blower fan and the ammonia in waste water is separated, then introduce biochemical system and carry out qualified discharge after anoxic, anaerobism, aerobic treatment;
(5) concentrated solution retained is introduced dope collecting tank and carry out distillation process or solidification treatment, distillation process is undertaken distilling by concentrated solution and is solidified by pollutent; Solidification treatment adds solidifying agent by concentrated solution and is cured process, solidification treatment liquid enters plate-and-frame filter press again to carry out press filtration and obtains filter cake and filtrate, harmless treatment is carried out in filter cake outward transport, filtrate is introduced ammonia nitrogen stripping system and carry out ammonia-nitrogen desorption process, utilize stripping and absorption principle, assisted by blower fan and the ammonia in waste water is separated, then enter biochemical system and carry out qualified discharge after biochemical treatment.
2. a kind of printing and dyeing mill's high concentration slurry new process for treating waste water containing membrane filter unit according to claim 1, is characterized in that: the dosage of described potent dose is 100 ~ 1000ppm.
3. a kind of printing and dyeing mill's high concentration slurry new process for treating waste water containing membrane filter unit according to claim 1, is characterized in that: the aperture of described inorganic ceramic film is 0.001 ~ 0.2 μm.
4. a kind of printing and dyeing mill's high concentration slurry new process for treating waste water containing membrane filter unit according to claim 1, is characterized in that: the filtering layer material of described inorganic ceramic film is pellumina or zirconium oxide film or oxidation titanium film.
CN201510532797.4A 2015-08-24 2015-08-24 Novel printery high-concentration slurry wastewater treatment technique containing membrane filtration unit Pending CN105110539A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107089764A (en) * 2017-04-25 2017-08-25 湖北绿色家园材料技术股份有限公司 A kind of water reuse method in polyamide production

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CN101357812A (en) * 2007-07-31 2009-02-04 深圳百斯特环保工程有限公司 Processing method for domestic garbage leachate
CN101838069A (en) * 2010-04-29 2010-09-22 湖南恒辉膜技术有限公司 Method for treating chemi-mechanical pulp pressing filtrate in papermaking factory
CN104030527A (en) * 2014-06-06 2014-09-10 西安瑞兰环保技术有限公司 Treatment method and separation and recovery system of money printing wastewater
CN104211267A (en) * 2014-09-26 2014-12-17 西安华陆环保设备有限公司 Method for treating organic pigment waste water containing high ammonia nitrogen and salinity
US20150232360A1 (en) * 2014-02-14 2015-08-20 Korea Institute Of Science And Technology Apparatus and method for anaerobic wastewater treatment with membrane distillation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101357812A (en) * 2007-07-31 2009-02-04 深圳百斯特环保工程有限公司 Processing method for domestic garbage leachate
CN101838069A (en) * 2010-04-29 2010-09-22 湖南恒辉膜技术有限公司 Method for treating chemi-mechanical pulp pressing filtrate in papermaking factory
US20150232360A1 (en) * 2014-02-14 2015-08-20 Korea Institute Of Science And Technology Apparatus and method for anaerobic wastewater treatment with membrane distillation
CN104030527A (en) * 2014-06-06 2014-09-10 西安瑞兰环保技术有限公司 Treatment method and separation and recovery system of money printing wastewater
CN104211267A (en) * 2014-09-26 2014-12-17 西安华陆环保设备有限公司 Method for treating organic pigment waste water containing high ammonia nitrogen and salinity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107089764A (en) * 2017-04-25 2017-08-25 湖北绿色家园材料技术股份有限公司 A kind of water reuse method in polyamide production
CN107089764B (en) * 2017-04-25 2021-04-30 湖北绿色家园材料技术股份有限公司 Method for utilizing waste water in polyamide production

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