CN205710248U - A kind of zero-discharge treatment system of dyeing waste water - Google Patents
A kind of zero-discharge treatment system of dyeing waste water Download PDFInfo
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- CN205710248U CN205710248U CN201620192241.5U CN201620192241U CN205710248U CN 205710248 U CN205710248 U CN 205710248U CN 201620192241 U CN201620192241 U CN 201620192241U CN 205710248 U CN205710248 U CN 205710248U
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Abstract
This utility model relates to the zero-discharge treatment system of a kind of dyeing waste water in technical field of waste water processing, including the first filter being sequentially connected with, the first surge tank, the first adsorption tower, neutralizing tank, the second filter, the second surge tank, the second adsorption tower, the 3rd surge tank, the 3rd filter and MVR vapo(u)rization system；Described first filter and the second filter are deckle board filter, and drainage screen is 80 100 mesh, for removing fixing impurity, float and the cotton-shaped impurity in waste water；It is provided with granular active carbon in described first adsorption tower and the second adsorption tower, waste water is carried out Adsorption of Organic, desolventing technology；Described neutralizing tank connects has liquid ammonium to add pipeline, the acid ion in annex solution ammonium and in waste water；Described MVR vapo(u)rization system is used for through evaporative crystallization, separates and discharge crystallized product, and the cooled system of water vapour that will meet discharge standard after evaporating is cooled to discharge water row's safety dumping.
Description
Technical field
This utility model relates to technical field of waste water processing, particularly to the zero-discharge treatment system of a kind of dyeing waste water.
Background technology
Dyeing waste water is to process the waste water that cotton, fiber crops, chemical fibre and blending product thereof are main printing and dyeing mill's discharge.The dyeing waste water water yield is relatively big, and 1 ton of textile water consumption of every dyeing and printing process reaches 100～200 tons, and wherein 80～90% become waste water.Textile printing and dyeing wastewater has the features such as the water yield is big, organic pollution content is high, alkalescence is big, change of water quality is big, belongs to one of intractable industrial wastewater, containing dyestuff, slurry, auxiliary agent, soda acid, fiber impurity, sand class material, inorganic salt etc. in waste water.
Dyeing is that water consumption rich and influential family, wastewater discharge and the total amount of pollutant occupy the whole nation second of industrial department and the 4th respectively, is that China's emphasis pollutes one of industry.Dyeing waste water always big with discharge capacity, intractability is high and becomes emphasis and the difficult point of waste water treatment technical study.Meanwhile, along with developing rapidly of China's economy, water scarcity has become the limiting factor that restriction China dyeing develops further.In order to realize the sustainable development of dyeing, the resource reuse of dyeing waste water becomes the key realizing this target.At present, based on clothing dyeing, washing, the whole production enterprise scalded, discharge a large amount of waste water in process of production, containing certain Organic substance and colourity in waste water, could reuse after needing waste water carries out advanced treating.
The conventional technique for the treatment of of dyeing wastewater is broadly divided into following several big class: (1) physico-chemical process: utilizes and adds flocculant, flocculation aid and carry out precipitating or air supporting in specific structures, removes a kind of Chemical Physics processing method of pollutant in sewage.But such method due to dosing costly, remove pollutant not thoroughly, sludge quantity is big and is difficult to process further, certain " secondary pollution " can be produced, be not used alone, be only used as the auxiliary process of biochemical treatment.(2) biochemical process: utilize the effect of microorganism, makes organic matter degradation in sewage, adsorbed and a kind of processing method of removing.Owing to its degradation of contaminant is thorough, operating cost is relatively low, does not produces features such as " secondary pollutions ", is widely used in decolorizing printing and dyeing waste water process.Biochemistryization treatment technology is broadly divided into anaerobic and aerobic.Anaerobism includes: hydrolysis acidification, UASB etc.；Aerobic specifically include that biomembrance process, activated sludge process etc..But these methods are respectively provided with, and investment is big, operating cost is high, treatment effect is general, is difficult to meet the requirement of major part printing and dyeing enterprise.
In the most domestic case history about dyeing waste water slightly scale, involved Technology mainly includes materialization, biochemistry, photocatalysis, light electrolysis, microwave catalysis, advanced oxidation etc., almost relate to each technical field of Sewage advanced treatment.And these technology are substantially the concentration reducing organic pollution on the basis of qualified discharge further, but still zero-emission can not be realized.
Therefore, study a kind of high treating effect, run simple, realize dyeing waste water zero discharge treatment there is the highest economy and environmental benefit.
Utility model content
The purpose of this utility model is to provide a kind of high treating effect, operation process simply, and realizes the zero-discharge treatment system of the dyeing waste water of lower emission treatment on the basis of ensureing emission compliance standard.
The purpose of this utility model is realized in, the zero-discharge treatment system of a kind of dyeing waste water, including the first filter being sequentially connected with, the first surge tank, the first adsorption tower, neutralizing tank, the second filter, the second surge tank, the second adsorption tower, the 3rd surge tank, the 3rd filter and MVR vapo(u)rization system；Described first filter and the second filter are deckle board filter, and drainage screen is 80-100 mesh, for removing fixing impurity, float and the cotton-shaped impurity in waste water；It is provided with granular active carbon in described first adsorption tower and the second adsorption tower, waste water is carried out Adsorption of Organic, desolventing technology；Described neutralizing tank is added with liquid ammonium reactant for the acid ion neutralizing in waste water；Described MVR vapo(u)rization system is used for through evaporative crystallization, separates and discharge crystallized product, and the cooled system of water vapour that will meet discharge standard after evaporating is cooled to discharge water row's safety dumping.
The detailed process being processed dyeing waste water by above-mentioned processing system is:
(1) dyeing waste water is introduced the first filter, to remove the fixing impurity in waste water and float；
(2) waste water after the first filter filters is introduced the first surge tank, to adjust flow velocity；
(3) by waste water in the first surge tank with Q1=30-40m/h flow velocity introduces in the first adsorption tower, absorption time of contact be 2-3 hour；
(4) water after the first adsorption tower adsorption treatment being drained into neutralizing tank, add liquid ammonium reactant in neutralizing tank, the pH value of regulation waste water is 3-4, and generates neutralized reaction product (NH4)2SO4；
(5) waste water in neutralizing tank is introduced the second filter and carries out secondary filter process, filter and neutralize the cotton-shaped impurity produced in reaction；
(6) waste water after the second filter filters is introduced the second surge tank；
(7) by waste water in the second surge tank with Q2=(1.5～2) Q1Flow velocity introduce the second absorption and take, waste water carried out again Adsorption of Organic, desolventing technology, absorption time of contact is 1-1.5 hour；
(8) water after the second adsorption tower adsorption treatment is drained into the 3rd surge tank；
(9) water in the 3rd surge tank is caused MVR vapo(u)rization system after the 3rd filter filters, through evaporative crystallization, separate, discharge crystallized product (NH4) 2SO4Crystal, the cooled system of water vapour meeting discharge standard after evaporation is cooled to discharge water row's safety dumping.
The zero-discharge treatment system of dyeing waste water of the present utility model and process technique thereof, by waste water through single filter, absorption to dispose most solid impurity, Organic substance, dyestuff and the slurry etc. in waste water, then acidity neutralization is carried out, to neutralize the sulfate ion in waste water, during this, can adsorb to fall the compositions such as the organic waxiness of major part in waste water through the adsorption of primary adsorption tower, the generation of acid tar oil composition in acid-base neutralization reacts can be prevented effectively from, reduce the intractability of postorder processing links, and the quality of discharge water is effectively ensured；In this utility model processing system, it is 34 by neutralizing the pH value of reaction controlling, makes the acidity that treatment fluid holding is suitable, be possible to prevent treatment fluid fouling in the evaporation and crystallization system of postorder.
As improvement of the present utility model, described MVR vapo(u)rization system includes preheater, circulating pump, heating evaporation device, crystallizing evaporator and centrifugal separator successively, the condensed water output loop of described heating evaporation device and preheater are connected to provide the thermal source of preheater, the steam (vapor) outlet of described crystallizing evaporator connects MVR vapour compression machine and cooler the most side by side, described MVR vapour compression machine for the steam of the intensification crystallizing evaporator that pressurizes for forming indirect steam and being delivered to the shell side of crystallizing evaporator and add in the passage of heat；Steam is condensed into discharge water and discharges by described cooler.The process using the evaporative crystallization of MVR vapo(u)rization system of the present utility model includes: the preheated device of waste water after processing is preheated to 80～85 DEG C, it is delivered to heating evaporation device through circulating pump, waste water is heated to 105～108 DEG C, flash chamber subsequently into crystallizing evaporator, make the water vapour that most water is evaporated to 85～90 DEG C under negative pressure, the input of a portion steam carry out pressurizeing to MVR vapour compression machine be warming up to 110～112 DEG C after be delivered to the shell side of crystallizing evaporator and add in the passage of heat, remaining steam is delivered to cooler and is condensed into discharge water, the serosity of crystallizing evaporator inner bottom part sedimentation enters centrifugal separator and carries out brilliant liquid separation, isolate (NH4)2SO4Crystal, in the liquid cold reflux after separation to neutralizing tank.Evaporation and crystallization system of the present utility model, after the crystallized separation of oar liquid, continues to be back in neutralizing tank, and the sulfate ion of unneutralized process is circulated process, and such iterative cycles processes, to realize the zero-emission standard of waste water.In this utility model, after the pressurized intensification of steam self generated of crystallizing evaporator, steam can be made to be fully recycled as the thermal source of evaporative crystallization again, improve the thermal efficiency, energy efficient；Be both heating additional issue device condensing hot air furnace after for preheating the low-temperature wastewater of crystallization to be evaporated, can fully recycle the heat of the condensed water of heating evaporation device, further energy efficient.
Further, the clear layer on the upside of the crystallization settled layer of described crystallizing evaporator is additionally provided with clear liquor overfall, and described clear liquor overfall is connected with the entrance of circulating pump.The circulation connected mode of evaporation and crystallization system of the present utility model, can make uncrystallized supersaturation (NH4)2SO4Aqueous solution is circulated evaporation recrystallization.
The volume filling adsorption tower as further improvement of the utility model, described first adsorption tower and the second adsorption tower endoparticle activated carbon is 75 90%, and the particle diameter of described granular active carbon is 0.8mm-1.0mm.
For reasonable Arrangement Waste Water Treatment of the present utility model, described first adsorption tower is provided with two side by side, and the capacity of described first surge tank is 1.5～2 times of the first adsorption tower capacity sum；Described second surge tank is 1.5～2 times of the second adsorption tower capacity.
For improving the response speed of neutralizing tank, the neutralizing tank of described step 4) is provided with agitating device, and neutralizing tank is glass-reinforced plastic material tank body.
Accompanying drawing explanation
Fig. 1 is the zero-discharge treatment system figure of dyeing waste water of the present utility model.
The Zero-discharge treating process flow chart of Fig. 2 dyeing waste water of the present utility model.
Fig. 3 is the structured flowchart of MVR vapo(u)rization system.
1 mother solution pond；2 first filters；3 first surge tanks；4 first adsorption towers；5 neutralizing tanks；6 second adsorption towers；7 the 3rd surge tanks
；8 second surge tanks；9 second filters；10 the 3rd filters.
Detailed description of the invention
It is illustrated in figure 1 the zero-emission processing system of the dyeing waste water of the present invention, including first filter the 2, first surge tank the 3, first adsorption tower 4 connected, neutralizing tank the 5, second filter the 9, second surge tank the 8, second adsorption tower the 6, the 3rd surge tank the 7, the 3rd filter 10 and MVR vapo(u)rization system；First filter the 2, second filter 9 and the 3rd filter 10 are deckle board filter, and drainage screen is 80-100 mesh, for removing fixing impurity, float and the cotton-shaped impurity in waste water；It is provided with granular active carbon in first adsorption tower 4 and the second adsorption tower 4, waste water is carried out Adsorption of Organic, desolventing technology；The loading of granular active carbon is the 75 90% of the volume of adsorption tower, and the particle diameter of granular active carbon is 0.8mm-1.0mm；Neutralizing tank 5 is provided with liquid ammonium and adds pipeline for annex solution ammonium reactant to neutralize the acid ion in waste water；For making neutralization reaction full and uniform, being provided with agitating device in neutralizing tank 5, for improving the corrosion resistance of neutralizing tank 5, neutralizing tank 5 uses the tank body of glass-reinforced plastic material；MVR vapo(u)rization system is used for evaporative crystallization, separates and discharge crystallized product, and the cooled system of water vapour that will meet discharge standard after evaporating is cooled to discharge water row's safety dumping.
The MVR vapo(u)rization system of the present invention is as shown in Figure 3, include preheater, circulating pump, heating evaporation device, crystallizing evaporator and centrifugal separator successively, the condensed water output loop of heating evaporation device and preheater are connected to provide the thermal source of preheater, the steam (vapor) outlet of crystallizing evaporator connects MVR vapour compression machine and cooler the most side by side, and the steam that MVR vapour compression machine is discharged for the intensification crystallizing evaporator evaporation mouth that pressurizes is for forming indirect steam and being delivered to provide in the shell side of crystallizing evaporator adds the passage of heat steam source of evaporative crystallization；Cooler is condensed into discharge water discharge by evaporating remaining steam of mouth.In the present invention, after the pressurized intensification of steam generate crystallizing evaporator self, steam can be made to be fully recycled as the thermal source of evaporative crystallization again, improve the thermal efficiency, energy efficient；For preheating the low-temperature wastewater of crystallization to be evaporated after being both the condensing hot air furnace of heating evaporation device, can fully recycle the heat of the condensed water of heating evaporation device, further energy efficient.
For ease of circular treatment, the clear layer on the upside of the crystallization settled layer of crystallizing evaporator is additionally provided with clear liquor overfall, and this clear liquor overfall is connected with the entrance of circulating pump, to realize uncrystallized supersaturation (NH4)2SO4Aqueous solution is circulated evaporation recrystallization.
For realizing the continuous circular treatment of Waste Water Treatment further, the first adsorption tower 4 is provided with two side by side, it is possible to achieve two adsorption tower feed liquors simultaneously process waste water respectively, and the capacity of the first surge tank 3 is 1.5～2 times of the first adsorption tower 4 capacity sum；Second surge tank 8 is 1.5～2 times of the second adsorption tower 6 capacity.
As shown in Figure 2, the technique using above-mentioned processing system to carry out dyeing waste water zero-emission process in invention is: dyeing waste water sequentially passes through following processing system from mother solution pond 1: first filter the 2, first surge tank the 3, first adsorption tower 4, neutralizing tank the 5, second filter the 9, second surge tank the 8, second adsorption tower the 6, the 3rd surge tank the 7, the 3rd filter 10, MVR vapo(u)rization system, is specially
(1) dyeing waste water is introduced the first filter 2 from mother solution pond 1 with certain flow, to remove the fixing impurity in waste water and float；
(2) waste water after the first filter 1 filters is introduced the first surge tank 3, to adjust flow velocity；
(3) by waste water in the first surge tank 3 with Q1=30-40m/h flow velocity introduces in the first adsorption tower 4, and waste water carries out Adsorption of Organic, desolventing technology, and absorption time of contact is 2-3 hour；
(4) water after the first adsorption tower 4 adsorption treatment being drained into neutralizing tank 5, annex solution ammonium reactant in neutralizing tank 5, the pH value of regulation waste water is 3-4, and generates neutralized reaction product (NH4)2SO4；
(5) waste water in neutralizing tank 5 is introduced the second filter 9 and carries out secondary filter process, filter and neutralize the cotton-shaped impurity produced in reaction；
(6) waste water after the second filter 9 filters is introduced the second surge tank 8；
(7) by waste water in the second surge tank 8 with Q2=(1.5～2) Q1Flow velocity introduce the second absorption and take in 6, waste water carries out Adsorption of Organic, desolventing technology again, and absorption time of contact is 1-1.5 hour；
(8) water after the second adsorption tower adsorption treatment is drained into the 3rd surge tank 7；
(9) it is re-introduced into MVR vapo(u)rization system after the water in the 3rd surge tank 7 being caused the 3rd filter 10 filtration treatment, through evaporative crystallization, separates, discharge crystallized product (NH4)2SO4Crystal, the cooled system of water vapour meeting discharge standard after evaporation is cooled to discharge water row's safety dumping.
The MVR vapo(u)rization system of the present invention is as shown in Figure 3, include preheater, circulating pump, heating evaporation device, crystallizing evaporator and centrifugal separator successively, the condensed water output loop of heating evaporation device and preheater are connected to provide the thermal source of preheater, the steam (vapor) outlet of crystallizing evaporator connects MVR vapour compression machine and cooler the most side by side, and the steam that MVR vapour compression machine is discharged for the intensification crystallizing evaporator evaporation mouth that pressurizes is for forming indirect steam and being delivered to provide in the shell side of crystallizing evaporator adds the passage of heat steam source of evaporative crystallization；Cooler is condensed into discharge water discharge by evaporating remaining steam of mouth.In the present invention, after the pressurized intensification of steam generate crystallizing evaporator self, steam can be made to be fully recycled as the thermal source of evaporative crystallization again, improve the thermal efficiency, energy efficient；For preheating the low-temperature wastewater of crystallization to be evaporated after being both the condensing hot air furnace of heating evaporation device, can fully recycle the heat of the condensed water of heating evaporation device, further energy efficient.
The process of the evaporative crystallization of the MVR vapo(u)rization system of the present invention includes: the preheated device of waste water after aforementioned process being processed is preheated to 80～85 DEG C, it is delivered to heating evaporation device through circulating pump, waste water is heated to 105～108 DEG C, flash chamber subsequently into crystallizing evaporator, make the water vapour that most water is evaporated to 85～90 DEG C under negative pressure, the input of a portion steam carry out pressurizeing to MVR vapour compression machine be warming up to 110～112 DEG C after be delivered to the shell side of crystallizing evaporator and add in the passage of heat, remaining steam is delivered to cooler and is condensed into discharge water, the serosity of crystallizing evaporator inner bottom part sedimentation enters centrifugal separator and carries out brilliant liquid separation, isolate (NH4)2SO4Crystal, the liquid after separation is back in neutralizing tank carry out the circular treatment of a lower whorl.The evaporation and crystal process of the present invention, after the crystallized separation of oar liquid, continues to be back in neutralizing tank, and the sulfate ion of unneutralized process is circulated process, and such iterative cycles processes, to realize the zero-emission standard of waste water.
Claims (6)
1. a zero-discharge treatment system for dyeing waste water, including the first filter being sequentially connected with, the first surge tank, the first adsorption tower, neutralizing tank, the second filter, the second surge tank, the second adsorption tower, the 3rd surge tank, the 3rd filter and MVR vapo(u)rization system；Described first filter and the second filter are deckle board filter, and drainage screen is 80-100 mesh, for removing fixing impurity, float and the cotton-shaped impurity in waste water；It is provided with granular active carbon in described first adsorption tower and the second adsorption tower, waste water is carried out Adsorption of Organic, desolventing technology；Described neutralizing tank connects has liquid ammonium to add pipeline, the acid ion in annex solution ammonium and in waste water；Described MVR vapo(u)rization system is used for through evaporative crystallization, separates and discharge crystallized product, and the cooled system of water vapour that will meet discharge standard after evaporating is cooled to discharge water row's safety dumping.
The zero-discharge treatment system of dyeing waste water the most according to claim 1, it is characterized in that, described MVR vapo(u)rization system includes preheater successively, circulating pump, heating evaporation device, crystallizing evaporator and centrifugal separator, the condensed water output loop of described heating evaporation device and preheater are connected to provide the thermal source of preheater, the steam (vapor) outlet of described crystallizing evaporator connects MVR vapour compression machine and cooler the most side by side, described MVR vapour compression machine for the steam of the intensification crystallizing evaporator that pressurizes for forming indirect steam and being delivered to the shell side of crystallizing evaporator and add in the passage of heat；Steam is condensed into discharge water and discharges by described cooler.
The zero-discharge treatment system of dyeing waste water the most according to claim 2, it is characterised in that the clear layer on the upside of the crystallization settled layer of described crystallizing evaporator is additionally provided with clear liquor overfall, described clear liquor overfall is connected with the entrance of circulating pump.
The zero-discharge treatment system of dyeing waste water the most according to claim 1, it is characterised in that it is 75 90% that described first adsorption tower and the second adsorption tower endoparticle activated carbon fill the volume of adsorption tower, and the particle diameter of described granular active carbon is 0.8mm-1.0mm.
The zero-discharge treatment system of dyeing waste water the most according to claim 1, it is characterised in that described first adsorption tower is provided with two side by side, the capacity of described first surge tank is 1.5～2 times of the first adsorption tower capacity sum；Described second surge tank is 1.5～2 times of the second adsorption tower capacity.
The zero-discharge treatment system of dyeing waste water the most according to claim 1, it is characterised in that be provided with agitating device in described neutralizing tank, and neutralizing tank is glass-reinforced plastic material tank body.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106986358A (en) * | 2017-04-13 | 2017-07-28 | 安徽广信农化股份有限公司 | A kind of purifying technique of pyraclostrobin by-product sodium sulphate |
| CN109734255A (en) * | 2019-03-11 | 2019-05-10 | 中国恩菲工程技术有限公司 | Waste water treatment system and wastewater treatment method |
| CN109867399A (en) * | 2017-12-04 | 2019-06-11 | 北京沃特普特环境科技有限公司 | A kind of gas field wastewater desulfurization desalting processing system and method containing surfactant |
| CN109879504A (en) * | 2019-03-18 | 2019-06-14 | 北京国环清华环境工程设计研究院有限公司 | Salt-containing organic wastewater granular activated carbon absorption regeneration-MVR integrating device and method |
| CN110963626A (en) * | 2019-12-31 | 2020-04-07 | 江苏跃华石化工程有限公司 | Reactive dye wastewater resource utilization device and process method thereof |
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- 2016-03-14 CN CN201620192241.5U patent/CN205710248U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106986358A (en) * | 2017-04-13 | 2017-07-28 | 安徽广信农化股份有限公司 | A kind of purifying technique of pyraclostrobin by-product sodium sulphate |
| CN109867399A (en) * | 2017-12-04 | 2019-06-11 | 北京沃特普特环境科技有限公司 | A kind of gas field wastewater desulfurization desalting processing system and method containing surfactant |
| CN109867399B (en) * | 2017-12-04 | 2023-12-19 | 北京沃特普特环境科技有限公司 | Gas field wastewater desulfurization and desalination treatment system and method containing surfactant |
| CN109734255A (en) * | 2019-03-11 | 2019-05-10 | 中国恩菲工程技术有限公司 | Waste water treatment system and wastewater treatment method |
| CN109879504A (en) * | 2019-03-18 | 2019-06-14 | 北京国环清华环境工程设计研究院有限公司 | Salt-containing organic wastewater granular activated carbon absorption regeneration-MVR integrating device and method |
| CN110963626A (en) * | 2019-12-31 | 2020-04-07 | 江苏跃华石化工程有限公司 | Reactive dye wastewater resource utilization device and process method thereof |
| CN110963626B (en) * | 2019-12-31 | 2023-12-19 | 江苏跃华石化工程有限公司 | Reactive dye wastewater recycling device and process method thereof |
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Address after: Hanjiang District Development in Jiangsu province Yangzhou city 225100 West Road No. 217 Patentee after: Shang Ding Environmental Technology (Jiangsu) Co., Ltd. Address before: Hanjiang District Development in Jiangsu province Yangzhou city 225100 West Road No. 217 Patentee before: Is Dinglu industry science and Technology (Yangzhou) Co. Ltd. |