CN105110525A - System for treating artificial flower dyeing wastewater and treatment method thereof - Google Patents
System for treating artificial flower dyeing wastewater and treatment method thereof Download PDFInfo
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Abstract
The invention discloses a system for treating artificial flower dyeing wastewater. The system comprises a grating tank, a regulating tank, a floatation tank, an intermediate water tank, a microelectrolysis reaction tank, a neutralizing coagulating reaction tank, a sedimentation tank and a sludge thickening tank. The invention further discloses a method for wastewater treatment by utilizing the system for treating artificial flower dyeing wastewater. Most of suspended matter in the wastewater can be removed through a salting out reinforcement air flotation process; by the combination of a follow-up microelectrolysis and coagu-flocculation reaction process, the wastewater decolorization rate is close to 100%, and the COD removal rate is over 90%. The system has the advantages of being good in purifying effect, simple in process and small in occupied space.
Description
Technical field
The present invention relates to the technical field of wastewater treatment, particularly relate to a kind of artificial flower modifying porcelain system and treatment process thereof.
Background technology
The dyeing waste-water discharged in the production process of artificial flower, containing resin adhesive liquid, various dye well organic solvent, has colourity dark, COD concentration is high, and suspended substance is many, and toxicity is large, the features such as biodegradability difference, belong to more unmanageable organic industrial sewage, large to environmental hazard.
Treatment process for waste water from dyestuff is a lot, be summed up and mainly contain biological process, chemical oxidization method, flocculent precipitation, absorption method, membrane separation process, By Bubble-floating Method etc., but all there is respective defect in above-mentioned all methods, therefore adopt single treatment process method to be difficult to obtain satisfied effect in energy consumption, economy, treatment effect etc.Artificial flower dyeing waste-water is as a kind of special waste water from dyestuff, and its waste component feature certainly will be different from general waste water from dyestuff, is difficult to directly make its qualified discharge with general materialization and biochemical method.So far, the bibliographical information about artificial flower dyeing wastewater treatment process method aspect is little.Guangdong artificial flower Products Co., Ltd adopts the artificial flowers and fruits dyeing waste-water of art breading of " coagulation air-float-dilution-bio-contact oxidation-precipitation ", treatment effect is better, but this technique needs a large amount of sanitary sewages to dilute former water, and biochemical treatment unit floor space is large.
In view of this, the present inventor studies and devises a kind of artificial flower modifying porcelain system and treatment process thereof, and this case produces thus.
Summary of the invention
The present invention, in order to solve the difficulty run in difficult degradation artificial flower modifying porcelain process, provides a kind of good purification, technique are simple, floor space is few, running cost is low artificial flower modifying porcelain system and treatment process thereof.
To achieve these goals, the present invention solves the technical scheme that its technical problem takes and is:
A kind of artificial flower modifying porcelain system, comprise set gradually grating tank, equalizing tank, air flotation pool, intermediate pool, micro-electrolysis reaction pond, in and coagulation reaction tank, settling tank and sludge thickener; Wherein said equalizing tank is connected with grating tank, is provided with submersible agitator in equalizing tank; The feed-water end of described air flotation pool is connected with the water outlet of equalizing tank by pipeline, and is provided with lift pump in pipeline; The water inlet of described intermediate pool is connected with the water outlet of air flotation pool by pipeline; The water inlet pipe in described micro-electrolysis reaction pond is connected with intermediate pool, and micro-electrolysis reaction is provided with iron-carbon filling material in pond; Micro-electrolysis reaction pond and settling tank is connected respectively with the feed-water end of coagulation reaction tank, water side in described; The mud of described settling tank is connected with sludge thickener by sludge pipe; The supernatant liquor of sludge thickener is connected with equalizing tank by pipeline, and the mud of this sludge thickener is connected with pressure filter by pipeline, and the filtrate of pressure filter is connected with equalizing tank by pipeline.
As the optimal way of embodiment, arrange line mixer between described air flotation pool and equalizing tank, line mixer is connected with salting-out agent adding set by chemical feed pipe.
As the optimal way of embodiment, described air flotation pool rising pipe connects return line to dissolving, and dissolving is connected to air line.
As the optimal way of embodiment, between described intermediate pool and described micro-electrolysis reaction pond, be provided with lift pump.
As the optimal way of embodiment, described micro-electrolysis reaction pond is connected with sour adding set, aerating apparatus.
As the optimal way of embodiment, in described and coagulation reaction tank also there is alkali lye add entrance and coagulant aids adds entrance, be connected with alkali lye adding set, coagulant aids adding set respectively.
A kind of artificial flower modifying porcelain method, comprises the following steps:
Step one, artificial flower dyeing waste-water, after grid interception bulk foreign material, flow to equalizing tank certainly, regulate the waste water water yield and even water quality;
In step 2, equalizing tank, waste water pumps to air flotation pool by lift pump, waste water is before entering air flotation pool, in air supporting water inlet pipe, add salting-out agent by salting-out agent adding set, wastewater streams, after reaction saltoutd by line mixer, enters the mixing zone of air flotation pool, mix with the dissolved air water after release and contact, make flocs unit stick on fine gas bubbles, then enter air flotation zone, air supporting reaction times 30-40min, scum silica frost is got rid of through ash pit, and clear water flows out by bottom pond;
Step 3, air flotation pool water outlet flow into intermediate pool certainly, to ensure micro cell water inlet stable homogeneous;
Step 4, intermediate pool waste water are promoted to the micro-electrolysis reaction pond that iron-carbon filling material is housed by pump, adding acid control wastewater pH is 2-4, and opens aerating apparatus, carries out micro-electrolysis reaction 90-120min;
Step 5, light electrolysis water outlet in flow to and coagulation reaction tank, and by adding alkali readjustment wastewater pH to 8-10, then adding coagulant aids polyacrylamide (PAM), stirring coagulating 15-30min;
Step 6, in and coagulation reaction tank water outlet from flowing to settling tank, carry out mud-water separation; Mud combines in the bed mud bucket of settling tank pond, enters sludge thickener by sludge pipe, and in settling tank, supernatant liquor then enters reuse after municipal wastewater pipe network or advanced treatment;
Step 7, mud concentrate in sludge thickener, supernatant liquor is back to equalizing tank and again carries out circular treatment, and mud is squeezed into pressure filter by pump and carried out dehydration and drying process, the filter cake of generation carries out landfill stabilization, and pressing filtering liquid is back to equalizing tank and again carries out circular treatment.
As the optimal way of embodiment, in described step 2, salting-out agent used are sodium-chlor or seawater.
As the optimal way of embodiment, in described step 4, described iron-carbon filling material: iron used is scrap iron wood shavings or iron powder, charcoal used is gac, and the quality proportioning of iron charcoal is 1:3-1:1.
As the optimal way of embodiment, in described step 5, alkali used is sodium hydroxide solution or milk of lime.
As the optimal way of embodiment, in described step 5, coagulant aids used is polyacrylamide.
After adopting technical solutions according to the invention, there is following beneficial effect:
For artificial flower dyeing waste-water water quality characteristics, adopt strengthening air supporting-Fe-C micro electrolysis combination process of saltouing, wherein, strengthening air-float technology of saltouing removes suspended substance, colourity and organism successful; Fe-C micro electrolysis technique is not needing can there be good removal effect to the organism of colourity and difficult for biological degradation under additional power source condition, and makes filler with waste iron filing, low cost; Therefore, this treatment process is succinct, and occupation of land face is few, and operation is simple, and running cost is low.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments so that the invention will be further described.
Embodiment 1
A kind of artificial flower modifying porcelain system as shown in Figure 1, comprise set gradually grating tank, equalizing tank, air flotation pool, intermediate pool, micro-electrolysis reaction pond, in and coagulation reaction tank, settling tank and sludge sump.Mechanical grille is settled, for tackling the bulk foreign material in waste water in grating tank; Submersible agitator is provided with, for even water quality in equalizing tank; Lift pump is provided with, for lifting waste water between air flotation pool and equalizing tank; Air flotation pool is connected with a pipeline to dissolving, dissolving connects a tracheae, and air flotation pool rising pipe connects a return line to dissolving; Salting-out agent adding set is connected with the inlet channel of air flotation pool; Lift pump is provided with between intermediate pool and described micro-electrolysis reaction pond; Micro-electrolysis reaction is provided with iron-carbon filling material in pond, and is connected with sour adding set, aerating apparatus respectively; In be connected with alkali adding set, coagulant aids adding set respectively with coagulation reaction tank; The bottom of settling tank is provided with bucket, and is communicated with sludge sump by sludge pipe bottom bucket; Be provided with sewage backflow pump between described sludge thickener and equalizing tank, and be communicated with by sewage backflow pipe, sludge thickener is connected with sludge pump, sludge pump exit end is provided with pressure filter.
Utilize the method for above-mentioned a kind of artificial flower modifying porcelain system process artificial flower dyeing waste-water, comprise the following steps:
1) artificial flower dyeing waste-water is after grid interception bulk foreign material, certainly flow to equalizing tank, regulates the waste water water yield, start the even water quality of agitator simultaneously;
2) in equalizing tank, waste water is promoted to air flotation pool by pump; In order to strengthen air supporting removal effect, before waste water enters air flotation pool, in air supporting water inlet pipe, sodium-chlor or seawater is added by salting-out agent adding set, waste water after line mixer hybrid reaction enters the mixing zone of air flotation pool, mix with the dissolved air water after release and contact, make flocs unit stick on fine gas bubbles, then enter air flotation zone.Flocs unit is floated downward to the water surface in the effect of lift of gas and is formed scum silica frost, available mechanical or waterpower mode are got rid of through ash pit, lower floor's clear water flows out by bottom pond, wherein, a part of clear water, as recirculation water, is delivered to dissolving by reflux pump, the dissolving residence time is 3-4min, pressurized air is pressed into dissolving by air compressor, and the bubble of formation enters air flotation pool, and the air supporting reaction times is 30-40min;
3) air flotation pool water outlet gravity flow enters intermediate pool, temporary reservoir waste water, and ensures micro cell water inlet stable homogeneous;
4) intermediate pool waste water is promoted to the micro-electrolysis reaction pond that iron-carbon filling material is housed by pump, and wherein, iron used is scrap iron wood shavings or iron powder, and charcoal used is gac, and the quality proportioning of iron charcoal is 1:3-1:1; In order to play light electrolysis effect, sour automatic adding device can be utilized to add dilute sulphuric acid, controlling wastewater pH within the scope of 2-4, micro-electrolysis reaction 90-120min;
5) light electrolysis water outlet is in flowing to and after coagulation reaction tank, and utilize automatic adding device to add alkali (sodium hydroxide solution or milk of lime) and PAM coagulant aids successively, control pH is within the scope of 8-10, coagulating 15-30min;
6) certainly flow to settling tank with coagulation reaction tank water outlet in, carry out mud-water separation; Mud combines in the bed mud bucket of settling tank pond, enters sludge thickener by sludge pipe; In settling tank, supernatant liquor then enters reuse after municipal wastewater pipe network or advanced treatment;
7) mud in sludge thickener is entered by sludge pipe, carry out layering under gravity to concentrate, supernatant liquor is back to equalizing tank and again carries out circular treatment, mud is squeezed into pressure filter by pump and is carried out dehydration and drying process, pressing filtering liquid is back to equalizing tank and again carries out circular treatment, the filter cake outward transport refuse landfill landfill stabilization after press filtration.
Embodiment 2
Certain corporate boss will produce various natural, ecological emulation floriculture product, can produce a large amount of dyeing waste-waters in production process.This waste water contains various kinds of resin glue, organic-inorganic dyestuff and organic solvent.The color testing dyeing waste-water used is dark brown red, and CODcr is about 2000mg/L, and BOD5 is about 30mg/L, and colourity is about 800 times, and SS is about 1500mg/L, and pH is about 6.2.This chroma in waste water is high, and suspended substance is many, and organic content is high, biodegradability difference (BOD5/CODcr<0.3).Combination process is as shown in Figure 1 adopted to process this waste water.
First plant effluent is collected in equalizing tank, mix in equalizing tank with from the supernatant liquor of sludge thickener and the pressing filtering liquid of sludge filter press, adjustment is carried out and homogeneous to the water yield of waste water, waste water is promoted to air flotation pool by pump after equalizing tank, waste water is before entering air supporting, in air supporting water inlet pipe, add sodium-chlor or seawater by salting-out agent adding set, after reacted waste water saltoutd by line mixer, enter the mixing zone of air flotation pool.When air flotation pool unit runs, start air compressor machine and reflux pump, after the water surface of air flotation pool produces dissolved air water, start waste water pump, waste water enters the inflation section of air flotation pool, and the suspended substance in waste water sticks on fine gas bubbles, after the scum silica frost on the air flotation pool water surface gathers certain thickness, after scraping mud-collecting slot by mud scraper, be expelled to sludge thickener; Through air-flotation process, waste water color obviously shoals, and colourity drops to 200 times, and CODcr drops to about 820mg/L.
Air supporting water outlet gravity flow enters intermediate pool, and intermediate pool waste water is promoted to micro-electrolysis reaction pond by pump, and micro-electrolysis reaction pond is the iron charcoal mixed fillers of 1:2 built with mass ratio, and iron used is scrap iron wood shavings or iron powder, and charcoal used is gac.
In micro-electrolysis reaction pond process waste water process, utilize automatic medicine adding apparatus to add dilute sulphuric acid, controlling wastewater pH is about 3, carries out aeration with aerator, and after micro-electrolysis reaction 90min, water outlet is in flowing to and coagulation reaction tank.
In and in coagulation reaction tank, add sodium hydroxide solution and regulate wastewater pH to be 8, stir after 15min, add coagulant aids PAM, static 5min.
Get supernatant liquor and measure COD, colourity, through above-mentioned art breading, COD and chroma removal rate reach more than 92% and 99% respectively, and water outlet CODcr is about 160mg/L, and colourity is about 2.5 times, and this is purified waste water and reaches municipal sewage pipe network receiving requirement.Above are only the present invention's preferably embodiment, but design concept of the present invention is not limited thereto, allly utilizes this design to the disclosure of invention, all distortion directly derived or associate, all should be included within protection scope of the present invention.
Claims (10)
1. an artificial flower modifying porcelain system, is characterized in that: comprise set gradually grating tank, equalizing tank, air flotation pool, intermediate pool, micro-electrolysis reaction pond, in and coagulation reaction tank, settling tank and sludge thickener; Wherein said equalizing tank is connected with grating tank, is provided with submersible agitator in equalizing tank; The feed-water end of described air flotation pool is connected with the water outlet of equalizing tank by pipeline, and is provided with lift pump in pipeline; The water inlet of described intermediate pool is connected with the water outlet of air flotation pool by pipeline; The water inlet pipe in described micro-electrolysis reaction pond is connected with intermediate pool, and micro-electrolysis reaction is provided with iron-carbon filling material in pond; Micro-electrolysis reaction pond and settling tank is connected respectively with the feed-water end of coagulation reaction tank, water side in described; The mud of described settling tank is connected with sludge thickener by sludge pipe; The supernatant liquor of sludge thickener is connected with equalizing tank by pipeline, and the mud of this sludge thickener is connected with pressure filter by pipeline, and the filtrate of pressure filter is connected with equalizing tank by pipeline.
2. a kind of artificial flower modifying porcelain system according to claim 1, it is characterized in that: arrange line mixer between described air flotation pool and equalizing tank, line mixer is connected with salting-out agent adding set by chemical feed pipe.
3. a kind of artificial flower modifying porcelain system according to claim 1, is characterized in that: described air flotation pool rising pipe connects return line to dissolving, and dissolving is connected to air line.
4. a kind of artificial flower modifying porcelain system according to claim 1, is characterized in that: be provided with lift pump between described intermediate pool and described micro-electrolysis reaction pond.
5. a kind of artificial flower modifying porcelain system according to claim 1, is characterized in that: described micro-electrolysis reaction pond is connected with sour adding set, aerating apparatus.
6. a kind of artificial flower modifying porcelain system according to claim 1, is characterized in that: in described and coagulation reaction tank also there is alkali lye add entrance and coagulant aids adds entrance, be connected with alkali lye adding set, coagulant aids adding set respectively.
7. an artificial flower modifying porcelain method, is characterized in that comprising the following steps:
Step one, artificial flower dyeing waste-water, after grid interception bulk foreign material, flow to equalizing tank certainly, regulate the waste water water yield and even water quality;
In step 2, equalizing tank, waste water pumps to air flotation pool by lift pump, waste water is before entering air flotation pool, in air supporting water inlet pipe, add salting-out agent by salting-out agent adding set, wastewater streams, after reaction saltoutd by line mixer, enters the mixing zone of air flotation pool, mix with the dissolved air water after release and contact, make flocs unit stick on fine gas bubbles, then enter air flotation zone, air supporting reaction times 30-40min, scum silica frost is got rid of through ash pit, and clear water flows out by bottom pond;
Step 3, air flotation pool water outlet flow into intermediate pool certainly, to ensure micro cell water inlet stable homogeneous;
Step 4, intermediate pool waste water are promoted to the micro-electrolysis reaction pond that iron-carbon filling material is housed by pump, adding acid control wastewater pH is 2-4, and opens aerating apparatus, carries out micro-electrolysis reaction 90-120min;
Step 5, light electrolysis water outlet in flow to and coagulation reaction tank, and by adding alkali readjustment waste water ph to 8-10, then adding coagulant aids polyacrylamide, stirring coagulating 15-30min;
Step 6, in and coagulation reaction tank water outlet from flowing to settling tank, carry out mud-water separation, mud combines in the bed mud bucket of settling tank pond, enters sludge thickener by sludge pipe, and in settling tank, supernatant liquor then enters reuse after municipal wastewater pipe network or advanced treatment;
Step 7, mud concentrate in sludge thickener, supernatant liquor is back to equalizing tank and again carries out circular treatment, and mud is squeezed into pressure filter by pump and carried out dehydration and drying process, the filter cake of generation carries out landfill stabilization, and pressing filtering liquid is back to equalizing tank and again carries out circular treatment.
8. a kind of artificial flower modifying porcelain method according to claim 7, it is characterized in that: in described step 2, salting-out agent used are sodium-chlor or seawater.
9. a kind of artificial flower modifying porcelain method according to claim 7, it is characterized in that: in described step 4, described iron-carbon filling material: iron used is scrap iron wood shavings or iron powder, charcoal used is gac, and the quality proportioning of iron charcoal is 1:3-1:1.
10. a kind of artificial flower modifying porcelain method according to claim 7, it is characterized in that: in described step 5, alkali lye used is sodium hydroxide solution or milk of lime.
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| CN107399872A (en) * | 2017-08-07 | 2017-11-28 | 成都之和环保科技有限公司 | A kind of integrated washup method of wastewater treatment |
| CN108751611A (en) * | 2018-07-13 | 2018-11-06 | 苏州新工环境工程技术有限公司 | Efficient printing and dyeing wastewater treatment system and its processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107285569A (en) * | 2017-07-24 | 2017-10-24 | 上海问鼎环保科技有限公司 | A kind of polyvinyl chloride auxiliary agent produces high saliferous organic wastewater with difficult degradation thereby processing method |
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Application publication date: 20151202 |