CN105084578B - A kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering - Google Patents
A kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering Download PDFInfo
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- CN105084578B CN105084578B CN201410185585.9A CN201410185585A CN105084578B CN 105084578 B CN105084578 B CN 105084578B CN 201410185585 A CN201410185585 A CN 201410185585A CN 105084578 B CN105084578 B CN 105084578B
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Abstract
The invention discloses a kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering, it is characterised in that comprises the following steps：Water-based ink waste liquid is added into reactor；Inorganic acid is added in hydrotropism's ink waste liquid, the pH value for adjusting waste liquid is 12, the 10min of aeration agitation 3；Sludge is heated, sludge temperature is reached 70 90 DEG C, sludge dewatering forms block sludge；Take out upper strata sludge；Alkali lye is added into waste water, the pH value for adjusting waste water is 9 12, is aerated 0.5 2h；Inorganic acid is added into waste water, is discharged after neutralization.Using the present invention processing method, realize ink waste liquor contamination thing remove and it is sludge dewatering integrated, pollutants removal rate reaches more than 90%, percent of decolourization reaches more than 99%, sludge structure is fine and close, and moisture content is less than 40%, realize wastewater treatment with it is sludge dewatering integrated.
Description
Technical field
The invention belongs to the sewage in environmental project, technical field of sludge treatment, more particularly to a kind of high concentration aqueous's oil
Black liquid waste processing and its method for sludge dewatering.
Background technology
Plastics package（Waterproof）Material needs to use water-based ink in printing according to product, is needed when changing print color
Cleaning printing press and ink reservoir are wanted, generates a certain amount of high concentration aqueous's ink waste liquid.Contain substantial amounts of face in the waste liquid
The organic pollution such as material, water soluble polymer resin, auxiliary agent, CODCrValue be up to 200,000-60 ten thousand mg/L, colourity be up to 30,000 times with
On, pollution is extremely serious, it is difficult to handles.
Processing for this kind of waste liquid, generally use Coagulation Method are handled, i.e., ferrous sulfate, polymerization are added into waste liquid
The coagulant such as aluminium chloride, using sheet frame rolling filter, belt type dewaterer or centrifugal dehydrator etc. again after coagulating, to carry out machinery de-
Water, separation of solid and liquid remove substantial amounts of polluter in waste liquid, and abjection water carries out subsequent treatment again.But such method coagulant consumes
Amount is big, and processing cost is high, and sludge combination water content is high after coagulation, and dehydration is difficult, must be equipped with special device for dehydrating sladge waste, throw
Money is big.
The content of the invention
It is an object of the invention to provide a kind of method of high concentration aqueous's ink liquid waste processing, realizes high concentration aqueous's oil
The efficient removal of pollutant in black waste liquid.
Another object of the present invention is to a kind of letter of sludge produced by providing this kind of high concentration aqueous ink liquid waste processing
Just dewatering, realize that wastewater treatment is integrated with sludge dewatering.
For achieving the above object, technical method of the invention is：
A kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering, comprise the steps：
Step a. will add reactor after high concentration aqueous's ink waste collection with sewage pump；
Step b. adds inorganic acid into waste liquid, and the pH value for adjusting waste liquid is 1-2, aeration agitation 3-10min, makes pollution
Thing separates out；
Step c. heats sludge, sludge temperature is reached 70-90 DEG C, sludge contraction, solidification dehydration is formed block dirt
Mud；
Step d. takes out upper strata sludge；
Step e. adds alkali into waste water, and the pH value for adjusting waste water is 9-12, is aerated 0.5-2h；
Step f. adds inorganic acid into waste water, is neutralized to pH value to be discharged after 7-9.
The pH of waste liquid is 1-2 in the step b；The inorganic acid is one kind in hydrochloric acid, sulfuric acid or nitric acid.
Mode of heating is using steam heating, heat-conducting oil heating or electrical heating in the step c.
The aerator is blower fan.
The alkali is sodium hydroxide.
The present invention general principle be：
Containing 30% or so water-soluble resin in water-based ink, acid out effect occurs after adding inorganic acid, destroys water-based
The stability of ink, polluter is formed flocculate, generate substantial amounts of sludge.Because water-soluble resin has a softening point,
Sludge is heated in acid condition, and when temperature reaches its softening point, resin macromolecular starts softening, by Van der Waals force, hydrogen
Key, molcohesion etc. are shunk, and are tightly combined molecule, are discharged and are shunk extruding abjection internal moisture automatically, realize fast
Speed, high-efficiency dehydration, are formed by curing block sludge.
Beneficial effect：
A. this kind of high concentration aqueous's ink waste liquid is handled through the inventive method, and waste liquid percent of decolourization is up to more than 99%, CODCr
Clearance reaches more than 90%, and ammonia nitrogen removal frank reaches more than 92%；
B. handled through the inventive method, sludge dewatering speed is fast, and dewatering efficiency is high, the block sludge knot formed after dehydration
Structure is fine and close, and moisture content is less than 40%, and far below conventional dehydration methods, sludge volume is small, is readily transported and disposes；
C. the present invention realize high concentration aqueous's printing ink wastewater processing it is integrated with sludge dewatering, process equipment is simple.
Embodiment
The invention provides a kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering, using by high concentration
The mineral acid acidified method of water-based ink waste liquid makes pollutant in waste liquid be transformed into hydrophobicity by hydrophily, and heating makes in waste liquid
The inter coagulation of pollutant phase, softening, shrink and finally solidify dehydration form block sludge.Realize liquid waste processing and sludge dewatering one
Body, its pollutant removal and dewatering efficiency are high, and process equipment is extremely simple, and investment is low.Below by embodiment furtherly
The bright present invention.
Embodiment 1
The invention provides a kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering, mainly including following
Step：
Step a. is by blue high concentration aqueous's ink waste liquid（CODCr：380000 mg/L；Colourity：50000 times）Sewage is used after collection
Pump adds reactor；
Step b. adds inorganic acid into waste liquid, and the pH value for adjusting waste liquid is 1-2, aeration agitation 10min, makes pollutant
Separate out；
Step c. stops aeration, heats sludge, sludge temperature is reached 80 DEG C, shrinks sludge, solidification dehydration forms block
Shape sludge；
Step d. takes out upper strata sludge；
Step e. adds alkali lye into waste water, and the pH value for adjusting waste water is 12, is aerated 1h；
Step f. adds inorganic acid into waste water, is neutralized to after pH value is 9 and discharges.
Handled using the inventive method, heated after this kind of blue high concentration aqueous's ink waste liquid acid out, made sludge softening, receive
Contracting solidification dehydration, waste liquid CODCrClearance reaches more than 92%, and for chroma removal rate up to more than 99%, ammonia nitrogen removal frank reaches 94%.
Solidify block moisture percentage in sewage sludge less than 40%, sludge structure is fine and close, realizes high concentration aqueous's ink liquid waste processing and sludge dewatering
Integration.
Embodiment 2
The invention provides a kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering, mainly including following
Step：
Black is mixed high concentration aqueous's ink waste liquid by step a.（CODCr：40.2 ten thousand mg/L；Colourity：60000 times）After collection
Reactor is added with sewage pump；
Step b. adds inorganic acid into waste liquid, and the pH value for adjusting waste liquid is 1-2, aeration agitation 10min, makes pollutant
Separate out；
Step c. stops aeration, heats sludge, sludge temperature is reached 82 DEG C, shrinks sludge, solidification dehydration forms block
Shape sludge；
Step d. takes out upper strata sludge；
Step e. adds alkali lye into waste water, and the pH value for adjusting waste water is 11.8, is aerated 1h；
Step f. adds inorganic acid into waste water, is neutralized to after pH value is 8.7 and discharges.
Handled using the inventive method, be heated to 82 DEG C after black mixing high concentration aqueous's ink waste liquid acid out, make sludge
Softening, shrink solidification dehydration, waste liquid CODCrClearance reaches more than 90%, and up to more than 99%, ammonia nitrogen removal frank reaches chroma removal rate
To 94%.Solidify block moisture percentage in sewage sludge less than 40%, sludge structure is fine and close, natural desiccation after taking-up, it is no longer necessary to other
Dehydration equipment, realize the integration of high concentration aqueous's ink liquid waste processing and sludge dewatering.
Claims (1)
1. a kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering, comprise the following steps：
Step a. will add reactor after high concentration aqueous's ink waste collection with sewage pump；
Step b. adds inorganic acid into waste liquid, and the pH value for adjusting waste liquid is 1-2, aeration agitation 3-10min, analyses pollutant
Go out；
Step c. heats sludge, and sludge temperature reaches 70-90 DEG C, shrinks sludge, solidification dehydration forms block sludge；
Step d. takes out upper strata sludge；
Step e. adds alkali into waste water, and the pH values for adjusting waste water are 9-12, is aerated 0.5-2h；
Step f. adds inorganic acid into waste water, is neutralized to pH values to be discharged after 7-9；
Inorganic acid is one kind in sulfuric acid, hydrochloric acid or nitric acid in the step b, and aerator is blower fan；
Alkali is sodium hydroxide in the step e；
Mode of heating is using steam heating, heat-conducting oil heating or electrical heating in the step c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185585.9A CN105084578B (en) | 2014-05-05 | 2014-05-05 | A kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185585.9A CN105084578B (en) | 2014-05-05 | 2014-05-05 | A kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering |
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| Publication Number | Publication Date |
|---|---|
| CN105084578A CN105084578A (en) | 2015-11-25 |
| CN105084578B true CN105084578B (en) | 2017-11-21 |
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| JP2823794B2 (en) * | 1993-12-27 | 1998-11-11 | 株式会社京写 | Treatment method of ink dissolution waste liquid |
| CN103373801B (en) * | 2012-04-20 | 2015-04-29 | 青岛大学 | Continuous dehydrating method and device for explosive production wastewater and sludge |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Bin Inventor after: Yu Panfen Inventor after: Liu Rongzhan Inventor after: Zhang Xiaodong Inventor after: Yu Deshuang Inventor after: Yu Mengnan Inventor after: Zhang Shangyi Inventor after: Guo Manman Inventor after: Xia Jingjing Inventor after: Yu Xiao Inventor before: Liu Rongzhan Inventor before: Zhang Bin Inventor before: Zhang Xiaodong Inventor before: Yu Deshuang Inventor before: Cao Shumei Inventor before: Wang Bing |
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Address after: 266071 Shandong city of Qingdao province Ningxia City Road No. 308 Patentee after: Qingdao University Address before: 266071 Ningxia Road, Shandong, China, No. 308, No. Patentee before: Qingdao University |