CN106316002A - Treatment process for polyester fabric base pretreatment wastewater - Google Patents
Treatment process for polyester fabric base pretreatment wastewater Download PDFInfo
- Publication number
- CN106316002A CN106316002A CN201610969622.4A CN201610969622A CN106316002A CN 106316002 A CN106316002 A CN 106316002A CN 201610969622 A CN201610969622 A CN 201610969622A CN 106316002 A CN106316002 A CN 106316002A
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- China
- Prior art keywords
- alkali
- waste water
- inhaling
- value
- alkali absorption
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Classifications
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- 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
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention relates to a treatment process for polyester fabric base pretreatment wastewater, and belongs to the technical field of wastewater treatment of textile enterprises. The treatment process comprises the following steps: enabling alkali wastewater of which the pH value reaches 14 or more to pass through an alkali absorption resin layer by using an exchange principle of alkali absorption resin to enable the alkali absorption resin layer to adsorb hydroxy radicals until the pH value of the water coming from the alkali absorption resin layer reaches 12 or more, and then regarding that the alkali absorption process of the alkali absorption resin layer is ended; then, adjusting the pH value of the wastewater after alkali absorption by the alkali absorption resin layer to be 3-4; then, performing pressure filtration; and finally, introducing acidic filtrate obtained by the pressure filtration into the alkali absorption resin layer to enable the pH value of the water coming out of the alkali absorption resin layer to be 6.5 or more so as to achieve an aim of neutralization, and meanwhile, performing biochemical treatment on the wastewater discharged from the alkali absorption resin layer to achieve emission up to standard. When the pH value of the water coming from the alkali absorption resin layer is less than 6.5, the above process is repeated. The treatment process for the polyester fabric base pretreatment wastewater, provided by the invention, does not need adding lime, and needs a small adding amount of acid.
Description
Technical field
The present invention relates to the Processing tecchnics of a kind of dacron alkali pre-treatment waste water, belong to the skill that textile enterprise's waste water processes
Art field.
Background technology
The pH value of dacron alkali pre-treatment waste water reaches more than 14, alkali concn be 5-6g/L, COD be 30000.For reaching mark
Quasi-emission request, existing dacron alkali pre-treatment waste water treatment process is: acid adding to pH value is adjusted to 3-4(i.e. acid out) →
Filter pressing (i.e. solid-liquid separation) → add Calx in filtrate is neutralized, and adjusts the pH value of filtrate to about 7, and COD is 8000, with
Time produce waste residue → filtrate mix → carry out biochemical treatment with workshop dyeing waste-water, to realize qualified discharge.This existing process
Technique mainly has two defects: 1. the application of Calx, adds the generation of waste residue, too increases production cost simultaneously；2. acid
Addition is big so that the waste water salinity carrying out biochemical treatment is high, is unfavorable for biochemical treatment.
Summary of the invention
It is an object of the invention to provide a kind of dacron alkali pre-treatment waste water little without the addition adding Calx and acid
Processing tecchnics.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is:
The Processing tecchnics of a kind of dacron alkali pre-treatment waste water, comprises the following steps:
(1) it is delivered to inhale alkali resin device by pH value dacron alkali pre-treatment waste water more than 14, inhales in alkali resin device
Suction alkali resin bed carry out inhale alkali；When the pH value of waste water after inhaling alkali resin bed and inhaling alkali reaches more than 12, inhale alkali resin bed and inhale
Alkali process terminates, and stops continuing on to dacron alkali pre-treatment waste water inhale the action of alkali resin device, and will remain in
The dacron alkali pre-treatment waste water inhaled in alkali resin device drains back to former collecting pit；
(2) waste water after inhaling alkali resin bed and inhaling alkali is delivered to acid out device, and the pH value of waste water is adjusted by acid adding in acid out device
Whole to 3-4；
(3) waste water after acid out carries out filter pressing process, and resulting ph is that the acid filtrate of 3-4 is first passed through suction alkali resin device,
Biochemical treatment, qualified discharge is carried out again by discharge in inhaling alkali resin device；When inhaling the water outlet pH value of alkali resin device less than 6.5
Time, stop acid filtrate being passed through the action inhaling alkali resin device；
(4) step (1), (2), the operation of (3) are repeated.
As the further setting of such scheme, in described step (1), inhale the suction alkali resin bed height in alkali resin device
For 1-1.2 rice, it is 7 ms/h that dacron alkali pre-treatment waste water enters the water velocity of suction alkali resin device.
The Processing tecchnics of dacron alkali pre-treatment waste water of the present invention, utilizes the exchange principle inhaling alkali resin, first pH value
Reach more than 14, alkali concn be 5-6g/L, COD be the alkaline waste water of 30000 by inhaling alkali resin bed, make suction alkali resin absorption hydrogen-oxygen
Root, during until the water outlet pH value inhaling alkali resin bed reaches more than 12, is considered as this suction alkali resin bed suction alkali process and terminates, now inhale alkali
Resin bed is the most saturated.Then, the pH value of waste water after inhaling alkali resin bed and inhaling alkali is adjusted to 3-4.Then, filter pressing is carried out.Finally,
Filter pressing gained acid filtrate is passed through suction alkali resin bed, makes the water outlet pH value of suction alkali resin bed more than 6.5, reach to neutralize mesh
, the waste water simultaneously discharged in self-priming alkali resin bed carries out biochemical treatment, to reach effluent standard.As the water outlet pH inhaling alkali resin bed
When value is less than 6.5, repeat said process.
The Processing tecchnics of dacron alkali pre-treatment waste water of the present invention, it is not necessary to add Calx, decrease the generation of waste residue, simultaneously
The addition of acid is few, and in corresponding waste water, salinity also reduces, beneficially biochemical treatment.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the present invention.
Detailed description of the invention
Embodiment 1
Shown in Fig. 1, the Processing tecchnics of dacron alkali pre-treatment waste water of the present invention, comprise the following steps:
(1) it is delivered to inhale alkali resin device 2 by pH value dacron alkali pre-treatment waste water 1 more than 14, inhales alkali resin device 2
In suction alkali resin bed carry out inhaling alkali, be 6 through inhale alkali resin bed inhaling the pH value of waste water after alkali at first, along with inhale alkali resin bed by
The most saturated, the pH value of waste water after inhaling alkali resin bed and inhaling alkali gradually rises；When the pH value of waste water after inhaling alkali resin bed and inhaling alkali reaches
During to more than 12, inhale alkali resin bed suction alkali process and terminate, stop continuing on to dacron alkali pre-treatment waste water 1 inhale alkali tree
The action of fat device 2, and drain back to former collecting pit by remaining in the dacron alkali pre-treatment waste water 1 inhaled in alkali resin device 2；
(2) inhale the waste water after alkali and be delivered to acid out device and carry out acid out 3 through inhaling alkali resin bed, acid adding in acid out device, will be useless
The pH value of water adjusts to 3；
(3) waste water after acid out carry out filter pressing process 4, resulting ph be 3 acid filtrate first be passed through suction alkali resin device 2,
Biochemical treatment 5 is carried out, with qualified discharge again by discharge in inhaling alkali resin device 2；When the water outlet pH value inhaling alkali resin device 2 is less than
When 6.5, stop acid filtrate being passed through the action inhaling alkali resin device 2；
(4) step (1), (2), the operation of (3) are repeated.
In the step (1) of the present embodiment, the suction alkali resin bed height inhaled in alkali resin device 2 is 1 meter, before dacron alkali
The water velocity processing waste water 1 entrance suction alkali resin device 2 is 7 ms/h.
Embodiment 2
Shown in Fig. 1, the Processing tecchnics of dacron alkali pre-treatment waste water of the present invention, comprise the following steps:
(1) it is delivered to inhale alkali resin device 2 by pH value dacron alkali pre-treatment waste water 1 more than 14, inhales alkali resin device 2
In suction alkali resin bed carry out inhaling alkali, be 6 through inhale alkali resin bed inhaling the pH value of waste water after alkali at first, along with inhale alkali resin bed by
The most saturated, the pH value of waste water after inhaling alkali resin bed and inhaling alkali gradually rises；When the pH value of waste water after inhaling alkali resin bed and inhaling alkali reaches
During to more than 12, inhale alkali resin bed suction alkali process and terminate, stop continuing on to dacron alkali pre-treatment waste water 1 inhale alkali tree
The action of fat device 2, and drain back to former collecting pit by remaining in the dacron alkali pre-treatment waste water 1 inhaled in alkali resin device 2；
(2) inhale the waste water after alkali and be delivered to acid out device and carry out acid out 3 through inhaling alkali resin bed, acid adding in acid out device, will be useless
The pH value of water adjusts to 3.5；
(3) waste water after acid out carry out filter pressing process 4, resulting ph be 3.5 acid filtrate first be passed through suction alkali resin device
2, then carried out biochemical treatment 5, with qualified discharge by discharging in inhaling alkali resin device 2；When the water outlet pH value inhaling alkali resin device 2 is little
In 6.5 time, stop acid filtrate being passed through the action inhaling alkali resin device 2；
(4) step (1), (2), the operation of (3) are repeated.
In the step (1) of the present embodiment, the suction alkali resin bed height inhaled in alkali resin device 2 is 1.1 meters, dacron alkali
It is 7 ms/h that pre-treatment waste water 1 enters the water velocity of suction alkali resin device 2.
Embodiment 3
Shown in Fig. 1, the Processing tecchnics of dacron alkali pre-treatment waste water of the present invention, comprise the following steps:
(1) it is delivered to inhale alkali resin device 2 by pH value dacron alkali pre-treatment waste water 1 more than 14, inhales alkali resin device 2
In suction alkali resin bed carry out inhaling alkali, be 6 through inhale alkali resin bed inhaling the pH value of waste water after alkali at first, along with inhale alkali resin bed by
The most saturated, the pH value of waste water after inhaling alkali resin bed and inhaling alkali gradually rises；When the pH value of waste water after inhaling alkali resin bed and inhaling alkali reaches
During to more than 12, inhale alkali resin bed suction alkali process and terminate, stop continuing on to dacron alkali pre-treatment waste water 1 inhale alkali tree
The action of fat device 2, and drain back to former collecting pit by remaining in the dacron alkali pre-treatment waste water 1 inhaled in alkali resin device 2；
(2) inhale the waste water after alkali and be delivered to acid out device and carry out acid out 3 through inhaling alkali resin bed, acid adding in acid out device, will be useless
The pH value of water adjusts to 4；
(3) waste water after acid out carry out filter pressing process 4, resulting ph be 4 acid filtrate first be passed through suction alkali resin device 2,
Biochemical treatment 5 is carried out, with qualified discharge again by discharge in inhaling alkali resin device 2；When the water outlet pH value inhaling alkali resin device 2 is less than
When 6.5, stop acid filtrate being passed through the action inhaling alkali resin device 2；
(4) step (1), (2), the operation of (3) are repeated.
In the step (1) of the present embodiment, the suction alkali resin bed height inhaled in alkali resin device 2 is 1.2 meters, dacron alkali
It is 7 ms/h that pre-treatment waste water 1 enters the water velocity of suction alkali resin device 2.
In above-mentioned all embodiments, the acid added in acid out device is industrial sulphuric acid.
Above-described embodiment is only used for illustrating the inventive concept of the present invention, rather than the restriction to rights protection of the present invention,
All changes utilizing this design that the present invention carries out unsubstantiality, all should fall into protection scope of the present invention.
Claims (2)
1. the Processing tecchnics of a dacron alkali pre-treatment waste water, it is characterised in that comprise the following steps:
(1) it is delivered to inhale alkali resin device by pH value dacron alkali pre-treatment waste water more than 14, inhales in alkali resin device
Suction alkali resin bed carry out inhale alkali；When the pH value of waste water after inhaling alkali resin bed and inhaling alkali reaches more than 12, inhale alkali resin bed and inhale
Alkali process terminates, and stops continuing on to dacron alkali pre-treatment waste water inhale the action of alkali resin device, and will remain in
The dacron alkali pre-treatment waste water inhaled in alkali resin device drains back to former collecting pit；
(2) waste water after inhaling alkali resin bed and inhaling alkali is delivered to acid out device, and the pH value of waste water is adjusted by acid adding in acid out device
Whole to 3-4；
(3) waste water after acid out carries out filter pressing process, and resulting ph is that the acid filtrate of 3-4 is first passed through suction alkali resin device,
Biochemical treatment, qualified discharge is carried out again by discharge in inhaling alkali resin device；When inhaling the water outlet pH value of alkali resin device less than 6.5
Time, stop acid filtrate being passed through the action inhaling alkali resin device；
(4) step (1), (2), the operation of (3) are repeated.
2. the Processing tecchnics of dacron alkali pre-treatment waste water as claimed in claim 1, it is characterised in that: described step (1)
In, the suction alkali resin bed height inhaled in alkali resin device is 1-1.2 rice, and dacron alkali pre-treatment waste water enters inhales alkali resin dress
The water velocity put is 7 ms/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969622.4A CN106316002B (en) | 2016-10-27 | 2016-10-27 | The Processing tecchnics of dacron alkali pre-treatment waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969622.4A CN106316002B (en) | 2016-10-27 | 2016-10-27 | The Processing tecchnics of dacron alkali pre-treatment waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106316002A true CN106316002A (en) | 2017-01-11 |
| CN106316002B CN106316002B (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610969622.4A Active CN106316002B (en) | 2016-10-27 | 2016-10-27 | The Processing tecchnics of dacron alkali pre-treatment waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108275800A (en) * | 2018-01-19 | 2018-07-13 | 绍兴永丰纺织印染有限公司 | The processing equipment of waste water before a kind of textile dyeing scale |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350589A (en) * | 2001-03-23 | 2002-12-04 | Ngk Insulators Ltd | Method for processing decontamination waste liquid of radioactive waste |
| CN101186404A (en) * | 2007-11-28 | 2008-05-28 | 吴江市方霞企业信息咨询有限公司 | Method for treating pulp sewage |
| CN105152268A (en) * | 2015-10-26 | 2015-12-16 | 中国科学院青海盐湖研究所 | Treatment method of alkaline pulp waste liquid |
-
2016
- 2016-10-27 CN CN201610969622.4A patent/CN106316002B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350589A (en) * | 2001-03-23 | 2002-12-04 | Ngk Insulators Ltd | Method for processing decontamination waste liquid of radioactive waste |
| CN101186404A (en) * | 2007-11-28 | 2008-05-28 | 吴江市方霞企业信息咨询有限公司 | Method for treating pulp sewage |
| CN105152268A (en) * | 2015-10-26 | 2015-12-16 | 中国科学院青海盐湖研究所 | Treatment method of alkaline pulp waste liquid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108275800A (en) * | 2018-01-19 | 2018-07-13 | 绍兴永丰纺织印染有限公司 | The processing equipment of waste water before a kind of textile dyeing scale |
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| Publication number | Publication date |
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| CN106316002B (en) | 2019-06-14 |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200624 Address after: 312000 Hutang in Zhejiang province Shaoxing city Keqiao District Street Binshecun Patentee after: Shaoxing Yongguang flocking Co., Ltd Address before: 312000 Hutang in Zhejiang province Shaoxing city Keqiao District Street Binshecun Patentee before: SHAOXING FENGYUAN ENERGY SAVING TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201126 Address after: No.32 Zhenyuan South Road, Xizhu Town, Yixing City, Wuxi City, Jiangsu Province 214200 Patentee after: YIXING XINWEILONG PRINTING AND DYEING Co.,Ltd. Address before: 312000 Hutang in Zhejiang province Shaoxing city Keqiao District Street Binshecun Patentee before: Shaoxing Yongguang flocking Co., Ltd |
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