CN111233272A - A effluent disposal system for after knitwear printing and dyeing processing - Google Patents
A effluent disposal system for after knitwear printing and dyeing processing Download PDFInfo
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- CN111233272A CN111233272A CN202010106650.XA CN202010106650A CN111233272A CN 111233272 A CN111233272 A CN 111233272A CN 202010106650 A CN202010106650 A CN 202010106650A CN 111233272 A CN111233272 A CN 111233272A
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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
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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
- 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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- 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
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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
- 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
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- 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
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a waste water treatment system used after printing and dyeing of knitwear, which comprises an adjusting tank, a sedimentation tank, a transition water tank and a reuse water tank, and is characterized in that: a hydrolysis acidification tank and an active sludge tank are arranged between the adjusting tank and the sedimentation tank, a physicochemical reaction tank and a physicochemical sedimentation tank are arranged between the sedimentation tank and the transition water tank, the rear end of the filtering tank is divided into two lines, part of the supernatant is transferred to a reuse water tank, and part of the lower layer of pug is transferred to a filtration water production reuse line and is reused; the invention can make the waste water meet the discharge standard and the principle of environmental protection by setting a plurality of lines for precipitation and repeated utilization of the waste water.
Description
Technical Field
The invention relates to the field of textile industry sewage treatment, in particular to a waste water treatment system used after printing and dyeing of knitwear.
Background
The sewage treatment is a process of purifying sewage to discharge the sewage into a certain water body or reuse the sewage. The sewage treatment mode is widely applied to various fields of buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment and the like. The current water pollution problem is more and more serious, the water pollution problem also arouses the attention of all social circles, the water pollution on the ground surface is obvious, and the pollution of underground water is also surprised. In order to actively cope with environmental problems such as water pollution, various environmental protection authorities also issue instructions for sewage discharge requirements. In a factory for manufacturing knitwear, in order to meet the requirements of consumers, the knitwear is often required to be printed and dyed, and different solutions are used for blending and printing and dyeing; the used solution contains a large amount of metal elements, the discharge requirement is difficult to achieve when the solution is not treated, and some factories simply treat the solution and then discharge the solution uniformly, so that the concept of resource recycling is not profound. Therefore, further research is needed for the resource recycling problem in the sewage discharge of the knitwear.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to provide a waste water treatment system for printing and dyeing of knitwear, which can improve the utilization rate of materials in discharged sewage.
(2) Technical scheme
In order to solve the technical problem, the invention discloses a wastewater treatment system for textile printing and dyeing processing, which comprises an adjusting tank, a sedimentation tank, a transition water tank and a reuse water tank, wherein a hydrolysis acidification tank and an active sludge tank are arranged between the adjusting tank and the sedimentation tank, a physicochemical reaction tank and a physicochemical sedimentation tank are arranged between the sedimentation tank and the transition water tank, the rear end of the filtering tank is divided into two lines, part of supernatant is transferred into the reuse water tank, and part of lower layer mud is transferred into a filtration production water reuse line and then reused;
step 1): the wastewater is subjected to large material isolation through a grid arranged at the front end of the adjusting tank, the isolated large materials are picked up through a pliers, the pH value is judged under the display of a Ph display instrument outside the adjusting tank, the wastewater is neutralized by an alkaline neutralizing agent with the pH value smaller than 6 and neutralized by an acidic neutralizing agent with the pH value larger than 8, and the pH value is controlled to be 6-8; the adjusted solution sequentially enters a hydrolysis acidification tank, an activated sludge tank and the sedimentation tank;
step 2): the supernatant of the sedimentation tank flows into the physicochemical reaction tank through a pipeline, the lower layer mud material sedimentation part flows into the hydrolysis acidification tank through a sewage backflow pipeline for further sedimentation treatment, the sewage backflow process is repeatedly carried out, and then the parts of activated sludge and filtered clear liquid are separated;
step 3): guiding the part of the filtered clear liquid and the supernatant liquid into a physicochemical reaction tank, adding a coagulant, reacting with precipitable particles in the supernatant liquid and the filtered clear liquid, precipitating, allowing the solution to flow into the physicochemical precipitation tank, guiding the lower layer sludge into a sludge concentration tank, and guiding the supernatant liquid in the sludge into an adjusting tank to adjust the pH value again;
step 4): and introducing the residual sludge of the sludge concentration tank into a dehydration machine room, dehydrating, and then introducing the press filtrate into an adjusting tank along a supernatant pipeline to transport the residual dry sludge outwards.
Preferably, the part for filtering the produced water recycling line comprises a part for sequentially carrying out a filtering process, a reverse osmosis process and a produced water recycling process on the lower layer of pug.
Preferably, the filtering process part comprises three filtering processes, which are respectively: a filtering process of a sand filter, a carbon filtering process of an activated carbon filter and an ultrafiltration process of ultrafiltration membrane equipment.
Preferably, the acid neutralizing agent is phosphate or carbonate; the alkaline neutralizing agent is sodium hydroxide or a hydroxide solution.
Preferably, the reflux part in the sedimentation tank is driven by a water pump as a power source.
Preferably, the sewage backflow treatment part is provided with a blower for improving the reaction efficiency.
(3) Advantageous effects
Compared with the prior art, the invention uses the grating to remove the first part of large sundries, then uses the regulating tank to carry out pH value, the sediment flows back through the sewage again through the hydrolysis acidification tank and the sedimentation tank, the part of the supernatant is led into the physicochemical reaction tank, the physicochemical reaction tank reacts through the treatment of the coagulant, then the supernatant and the sludge in the physicochemical sedimentation tank are totally led into the physicochemical sedimentation tank, the supernatant and the sludge in the physicochemical sedimentation tank are divided into different routes to be recycled, on one hand, the supernatant and the sludge are used as a sludge recycling route, and the solution in the sludge is extruded again through the dehydration in the sludge concentration tank and the dehydration machine room and then returns to the regulating tank to carry out regulation again; on one hand, the water is led into the filtering water tank, one part of water is reintroduced into the reuse water tank to be reused through the leaching process in the transition water tank, the other part of water is subjected to triple filtration and reverse osmosis to carry out the water production and reuse process, and precipitation and repeated utilization of waste water are carried out through a plurality of lines, so that the waste water can meet the discharge standard and the principle of environmental protection.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a structural diagram of a wastewater treatment system for textile printing and finishing according to the present invention.
Detailed Description
The following is a detailed description of the invention, which is given by way of example to enable a person skilled in the art to understand the invention without restricting it in any way, as it can be extended to the application of the invention to the treatment of waste water from various other knitwear processing plants.
Example 1:
will equalizing basin through the pipeline, hydrolysis-acidification pool, activated sludge tank, the sedimentation tank, the materialization reaction pond, the materialization sedimentation tank, transition pond interconnect gets up, utilize sewage backflow pipeline to link to each other sedimentation tank and hydrolysis-acidification pool simultaneously, carry out hydrolysis-acidification once more with sewage, after adding the coagulant in the materialization reaction pond, mud in the materialization sedimentation tank gets into behind the dehydration concentration treatment a part of solution of backward flow and gets into the equalizing basin again, unnecessary mud transports outward and does other mode handles, partly inflow reuse water tank discharges the use after the part passes through filtering water tank on the solution, another part passes through the three-layer filtering process, be respectively: the filtering process of the sand filter, the carbon filtering process of the activated carbon filter and the part of the reverse osmosis process and the produced water recycling process after the ultrafiltration process of the ultrafiltration membrane device are filtered have a plurality of using routes to achieve the purpose of resource recycling.
Example 2:
the method comprises the steps of connecting a regulating reservoir, a hydrolysis acidification pool, an activated sludge pool, a sedimentation pool, a physicochemical reaction pool, a physicochemical sedimentation pool and a transition water pool through pipelines, connecting the sedimentation pool and the hydrolysis acidification pool by using a sewage backflow pipeline, carrying out hydrolysis acidification again on sewage, arranging an air blower for improving reaction efficiency in the backflow treatment process, adding a coagulant into the physicochemical reaction pool, returning a part of solution after the sludge in the physicochemical sedimentation pool enters dehydration concentration treatment, re-entering the regulating reservoir, transporting redundant sludge out for other modes, allowing the part of the solution to flow into a reuse water pool for discharge and use after passing through the transition water pool, and allowing the other part of the solution to pass through a filtering process to carry out a part of a water production reuse process.
Claims (6)
1. The utility model provides a waste water treatment system for knitwear printing and dyeing processing back, includes equalizing basin, sedimentation tank, transition pond and reuse pond, its characterized in that: a hydrolysis acidification tank and an active sludge tank are arranged between the adjusting tank and the sedimentation tank, a physicochemical reaction tank and a physicochemical sedimentation tank are arranged between the sedimentation tank and the transition water tank, the rear end of the filtering tank is divided into two lines, part of the supernatant is transferred to a reuse water tank, and part of the lower layer of pug is transferred to a filtration water production reuse line and is reused;
step 1): the wastewater is subjected to large material isolation through a grid arranged at the front end of the adjusting tank, the isolated large materials are picked up through a pliers, the pH value is judged under the display of a Ph display instrument outside the adjusting tank, the wastewater is neutralized by an alkaline neutralizing agent with the pH value smaller than 6 and neutralized by an acidic neutralizing agent with the pH value larger than 8, and the pH value is controlled to be 6-8; the adjusted solution sequentially enters a hydrolysis acidification tank, an activated sludge tank and the sedimentation tank;
step 2): the supernatant of the sedimentation tank flows into the physicochemical reaction tank through a pipeline, the lower layer mud material sedimentation part flows into the hydrolysis acidification tank through a sewage backflow pipeline for further sedimentation treatment, the sewage backflow process is repeatedly carried out, and then the parts of activated sludge and filtered clear liquid are separated;
step 3): guiding the part of the filtered clear liquid and the supernatant liquid into a physicochemical reaction tank, adding a coagulant, reacting with precipitable particles in the supernatant liquid and the filtered clear liquid, precipitating, allowing the solution to flow into the physicochemical precipitation tank, guiding the lower layer sludge into a sludge concentration tank, and guiding the supernatant liquid in the sludge into an adjusting tank to adjust the pH value again;
step 4): and introducing the residual sludge of the sludge concentration tank into a dehydration machine room, dehydrating, and then introducing the press filtrate into an adjusting tank along a supernatant pipeline to transport the residual dry sludge outwards.
2. The waste water treatment system for textile printing and dyeing of knitwear according to claim 1, characterized in that: the part for filtering the produced water recycling line comprises a part for sequentially carrying out a filtering process, a reverse osmosis process and a produced water recycling process on the lower layer pug.
3. The waste water treatment system for textile printing and dyeing of knitwear according to claim 2, characterized in that: the filtering process part comprises three layers of filtering processes, which are respectively as follows: a filtering process of a sand filter, a carbon filtering process of an activated carbon filter and an ultrafiltration process of ultrafiltration membrane equipment.
4. A waste water treatment system for textile printing and finishing of knitwear according to any one of claims 1 to 3, characterized in that: the acid neutralizer is phosphate and carbonate; the alkaline neutralizing agent is sodium hydroxide or potassium hydroxide solution.
5. The waste water treatment system for textile printing and dyeing of knitwear according to claim 1, characterized in that: and the reflux part in the sedimentation tank is driven by a water pump as a power source.
6. The waste water treatment system for textile printing and dyeing of knitwear according to claim 1, characterized in that: the sewage backflow treatment part is provided with an air blower for improving the reaction efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010106650.XA CN111233272A (en) | 2020-02-21 | 2020-02-21 | A effluent disposal system for after knitwear printing and dyeing processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010106650.XA CN111233272A (en) | 2020-02-21 | 2020-02-21 | A effluent disposal system for after knitwear printing and dyeing processing |
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| Publication Number | Publication Date |
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| CN111233272A true CN111233272A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010106650.XA Pending CN111233272A (en) | 2020-02-21 | 2020-02-21 | A effluent disposal system for after knitwear printing and dyeing processing |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616978A (en) * | 2011-01-27 | 2012-08-01 | 上海彰华膜净化有限公司 | Printing and dyeing wastewater processing system |
| CN203530082U (en) * | 2013-10-21 | 2014-04-09 | 杭州浩蓝环境工程技术有限公司 | Printing and dyeing wastewater treatment and recycling system |
| CN203999271U (en) * | 2014-07-15 | 2014-12-10 | 浙江钱江纺织印染有限公司 | Printing and dyeing intermediate water reuse system |
| CN205420078U (en) * | 2015-12-17 | 2016-08-03 | 广州新滔水质净化有限公司 | Printing and dyeing wastewater advanced treatment unit is concentrated to industry park |
| CN105923903A (en) * | 2016-05-23 | 2016-09-07 | 广东全务环保科技有限公司 | Printing and dyeing wastewater zero-discharge system and technology |
| CN205616728U (en) * | 2016-04-20 | 2016-10-05 | 新昌县林昱机械科技有限公司 | Bleaching and dyeing effluent disposal system |
| CN205687740U (en) * | 2016-05-23 | 2016-11-16 | 广东全务环保科技有限公司 | A kind of dyeing waste water Zero discharging system |
-
2020
- 2020-02-21 CN CN202010106650.XA patent/CN111233272A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616978A (en) * | 2011-01-27 | 2012-08-01 | 上海彰华膜净化有限公司 | Printing and dyeing wastewater processing system |
| CN203530082U (en) * | 2013-10-21 | 2014-04-09 | 杭州浩蓝环境工程技术有限公司 | Printing and dyeing wastewater treatment and recycling system |
| CN203999271U (en) * | 2014-07-15 | 2014-12-10 | 浙江钱江纺织印染有限公司 | Printing and dyeing intermediate water reuse system |
| CN205420078U (en) * | 2015-12-17 | 2016-08-03 | 广州新滔水质净化有限公司 | Printing and dyeing wastewater advanced treatment unit is concentrated to industry park |
| CN205616728U (en) * | 2016-04-20 | 2016-10-05 | 新昌县林昱机械科技有限公司 | Bleaching and dyeing effluent disposal system |
| CN105923903A (en) * | 2016-05-23 | 2016-09-07 | 广东全务环保科技有限公司 | Printing and dyeing wastewater zero-discharge system and technology |
| CN205687740U (en) * | 2016-05-23 | 2016-11-16 | 广东全务环保科技有限公司 | A kind of dyeing waste water Zero discharging system |
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Application publication date: 20200605 |