CN108911423A - Aqueous ink waste water disposal process - Google Patents
Aqueous ink waste water disposal process Download PDFInfo
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- CN108911423A CN108911423A CN201810962834.9A CN201810962834A CN108911423A CN 108911423 A CN108911423 A CN 108911423A CN 201810962834 A CN201810962834 A CN 201810962834A CN 108911423 A CN108911423 A CN 108911423A
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- waste water
- water
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- flocculant
- tank
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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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
- C02F2103/14—Paint wastes
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Abstract
The invention discloses a kind of aqueous ink waste water disposal process,Water-based ink waste water carries out water quality by conditioning tank and mixes well,Then,Successively addition coagulant and flocculant are pre-processed,Waste water after pretreatment is squeezed into filter press,Filter press retains bulky grain suspended matter in waste water,Pressing filtering liquid enters in reservoir,Waste water enters reaction tank in reservoir,Waste water successively adds coagulant and flocculant in reaction tank,Waste water is squeezed into flotation tank again,The biggish suspended particulate of micro-bubble and partial size generated using dissolved air release in flotation tank is adhered to,Form the floating body that global density is less than water,Floating body floats up to the water surface by buoyancy,Slag Scraping Device by the way that the water surface is arranged in is struck off,Then waste water enters two-stage A/O biochemical treatment system,Then it is discharged after being precipitated into sedimentation basin,Discharge water can reach national sewage comprehensive emission standard first discharge standard,It is costly to solve water-based ink wastewater treatment,The problem of qualified discharge hardly possible.
Description
Technical field
The invention belongs to the technical field of waste water processing of environmental project, and in particular to a kind of processing work of water-based ink waste water
Skill.
Background technique
Currently, what domestic packed in cases industry generallyd use is that water-based ink printing technology needs more in process of production
It changes oil ink, cleaning of graphic arts equipment, therefore a certain amount of printing ink wastewater can be generated.Due to the COD and coloration one of water-based ink waste water
As it is all very high, biodegradability is poor, using being directly diluted with water method, even if tens times of dilution even hundred times, Shang Qianbei,
The coloration and COD of waste water are also difficult qualified discharge, while increasing discharge amount, processing difficulty and the processing cost of waste water again；It adopts
Keep cost for wastewater treatment very high with burning, transporting outward buried method also, be easy to cause secondary pollution, enterprise is allowed to be difficult to bear.
Aqueous ink waste water disposal process (the patent No. of Zhejiang Prov Industrial And Commercial University：ZL 200510060787.1), using " mixed
Retrogradation shallow lake+UV-Fenton+ is neutralized " treatment process processing water-based ink waste water, processing water outlet COD COD, coloration are only
It is able to satisfy national sewage comprehensive emission standard (GB8978-1996) two, three-level discharge standard, is not able to satisfy increasingly serious discharge
Standard.Waste water needs to adjust from neutrallty condition to acid condition (pH < 4), after carrying out UV-Fenton oxidation, then adjusts back neutrality
(6 < pH < 9) discharge, needs to add more salt and enters waste water, such as liquid alkaline (NaOH), sulfuric acid (H2SO4), hydrogen peroxide
(H2O2), ferrous sulfate (FeSO4), operating cost is higher, and sludge yield is big, and the total dissolved solid of waste water is caused to be multiplied.
Therefore, it is necessary to develop a kind of low cost, efficient processing technique to handle such waste water and qualified discharge.
Summary of the invention
In order to overcome drawbacks described above, the present invention provides a kind of aqueous ink waste water disposal process, the water-based ink waste water
Treatment process handles water-based ink waste water with " coagulation and filtration+air bearing+biological oxidation " group technology, and it is comprehensive to can reach national sewage
The first discharge standard for closing discharge standard (GB8978-1996), it is costly to solve water-based ink wastewater treatment, and qualified discharge is difficult
The problem of.
The present invention is to solve technical solution used by its technical problem：
A kind of aqueous ink waste water disposal process, includes the following steps：
A, water-based ink waste water is mixed well by conditioning tank progress water quality, then, successively adds coagulant and flocculant carries out
Pretreatment, makes organic contamination suspended particulate and colloid in waste water be converted to macroscopic bulky grain suspended matter；
B, the pretreated waste water of step A is all squeezed into filter press, filter press suspends the bulky grain in waste water
Object all retains, and pressing filtering liquid enters in reservoir；
C, the waste water in reservoir enters in reaction tank, and waste water successively adds coagulant and flocculant in reaction tank, makes
The lesser colloid of partial size is converted to the biggish suspended particulate of partial size in waste water, then waste water is squeezed into flotation tank, utilizes flotation tank
The biggish suspended particulate of micro-bubble and the partial size that middle dissolved air release generates adheres to, and forms global density and is less than the floating of water
Body, the floating body float up to the water surface by buoyancy, and the Slag Scraping Device by the way that the water surface is arranged in is struck off；
D, through step C, treated that waste water enters two-stage A/O biochemical treatment system；
E, it is discharged after step D treated waste water enters sedimentation basin precipitating.
The present invention is to solve further technical solution used by its technical problem：
It further says, coagulant is successively added in the step A and the pretreated process of flocculant progress is：First add
Coagulant polymeric aluminium chloride (PAC) simultaneously quickly stirs, and flocculant polyacrylamide is then added under conditions of mixing slowly
Amine (PAM).
Furthermore, the process for adding coagulant carries out in fast mixed pond, adds the process of flocculant in slow mixed pond
Middle progress.
It is preferred that flocculation aid can be added simultaneously when adding coagulant.
The flocculation aid is sodium hydroxide.
Further say, filter press used in the step B be chamber-type press filter and its retain partial size be 30 microns with
On.
It further says, the coagulant and flocculant added in the step C is coagulant polymeric aluminium chloride respectively
(PAC) and flocculant polyacrylamide (PAM) it, needs to be stirred in adding procedure.
It is preferred that the water-based ink waste water first passes through collecting pit collection, the conditioning tank is entered back into.
It is preferred that the water-based ink waste water needs are aerated in conditioning tank.
It is preferred that can according to need, nutritive salt is added in the two-stage A/O biochemical treatment system.
The beneficial effects of the invention are as follows：Aqueous ink waste water disposal process of the invention is with " coagulation and filtration+air bearing+biology
Oxidation " group technology handles water-based ink waste water, and tool has the advantage that：
1, the present invention can satisfy the requirement of waste water decoloring, and can remove 98% or more organic matter, and it is full to handle out water energy
Sufficient national sewage comprehensive emission standard (GB8978-1996) first discharge standard requirement, realizes qualified discharge；
2, it is not necessarily to coagulative precipitation tank or acid precipitation pond, therefore construction investment is few, occupied area is small；
3, there is no oxidation processing technique, reduce the control equipment such as pH meter and the ORP meter of control reaction condition, equipment investment
It is few；
4, the pH to 8~9 of waste water need to be only adjusted during coagulation and filtration, later process adjusts repeatedly without carrying out pH,
Therefore reduce dosing pump and day-to-day operation reagent consumption；
5, reduce ferrous sulfate (FeSO4), hydrogen peroxide (H2O2) and sulfuric acid (H2SO4) etc. adding of agent, the above medicament it is equal
For acid medicine, while the usage amount of liquid alkaline (NaOH) is decreased, therefore operation medicament expense can be substantially reduced；
6, it does not need to add a large amount of chemical agent, therefore limited to the incrementss of the total dissolved solid of waste water, favorably
In the Treated sewage reusing of waste water up to standard；
7, reduce oxidation processing technique, no longer add ferrous sulfate (FeSO4), and used polymerization alkali formula chlorination
Aluminium (PAC) amount ratio common process dosage is few, therefore sludge yield can also be greatly reduced.
Detailed description of the invention
Fig. 1 is the process flow chart of the embodiment of the present invention.
Specific embodiment
Illustrate a specific embodiment of the invention below by way of specific specific example, those of ordinary skill in the art are by this
The revealed content of specification understands advantages of the present invention and effect easily.
Embodiment：A kind of aqueous ink waste water disposal process carries out in the steps below：
A, by water-based ink wastewater collection to collecting pit, the water-based ink waste water in collecting pit is pumped into conditioning tank, is given up
Water is aerated in conditioning tank；The water-based ink waste water mixed well by conditioning tank water quality is pumped into mixed pond fastly, with machinery every
Film metering pump quantitatively adds the coagulant polymeric aluminium chloride (PAC) of 0.3~0.5g/L and quickly stirs, can be mixed in addition
Flocculation aid (such as sodium hydroxide) is added simultaneously when solidifying agent；Then waste water enters in mixed pond slowly, then throws under conditions of mixing slowly
Add flocculant polyacrylamide (PAM), the organic contaminations suspended particulates such as acrylic resin in waste water and colloid are converted to meat
The visible bulky grain suspended matter of eye.
B, chamber-type press filter will be all squeezed by the pretreated printing ink wastewater of step A with pneumatic diaphragm pump, and will utilize filters pressing
Machine filter cloth can retain the ability of 30 microns of partial size or more particulate matters, and the bulky grain suspended matter that generation is reacted in step A is all cut
It stays, filter cloth carries out subsequent processing through water, and pressing filtering liquid enters reservoir.
C, by step B, treated that processing water contains colloid less than 30 microns of dissolved organic matter and partial size exists,
So that waste water still has certain coloration.Waste water in reservoir is pumped into reaction tank, is successively added in reaction tank a small amount of
Coagulant polymeric aluminium chloride (PAC) and flocculant polyacrylamide (PAM), the process of adding to stir, utilize coagulant
With compression double electric layer, the sedimentation screen of flocculant catch with adsorption bridging mechanism, by waste water less than 30 microns colloid convert granulating
The biggish suspended particle of diameter, and adhered to using the micro-bubble that dissolved air release in flotation tank generates with it, it is formed whole close
Degree is less than the floating body of water, to float up to the water surface by buoyancy, the Slag Scraping Device by the way that the water surface is arranged in is struck off, to make color
Degree and COD are further removed.
D, through in step C treated waste water, coloration has reached national sewage comprehensive emission standard (GB8978-1996)
First discharge standard, mainly contains dissolubility organic pollutant (COD), carries out biological oxidation processing to it.Biological oxidation uses
Two-stage A/O (aerobic/anaerobic) biochemical treatment system, can allow the organic matter in waste water micro- in aerobic/anaerobic/aerobic/anaerobic
It is converted back and forth in biological growthing environment, denitrification present in level-one A/O treatment process in common process is avoided to be not thorough, two
The mud scum problem that waste water denitrification generates in heavy pond, this can be needed according to water quality in two-stage A/O biochemical treatment system in the process
Middle addition nutritive salt.
The aqueous ink waste water disposal process of the present embodiment is in the printing ink of Kunshan package packing supplies Co., Ltd
Waste water treatment engineering trial operation, stably reaching standard discharges at present.The following table 1 is change of water quality table before and after the processing.
Table 1：
| Project | Raw water | After coagulation and filtration | After air bearing | After biochemistry | Discharge water |
| COD | 3786 | 568 | 454 | 92 | 60 |
| SS | 1895 | 365 | 122 | 65 | 23 |
Claims (1)
1. a kind of aqueous ink waste water disposal process, it is characterised in that：Include the following steps：
A, water-based ink waste water is mixed well by conditioning tank progress water quality, then, successively adds coagulant and flocculant is located in advance
Reason, makes organic contamination suspended particulate and colloid in waste water be converted to macroscopic bulky grain suspended matter；
B, the pretreated waste water of step A is all squeezed into filter press, filter press is complete by the bulky grain suspended matter in waste water
Portion's retention, pressing filtering liquid enter in reservoir；
C, the waste water in reservoir enters in reaction tank, and waste water successively adds coagulant and flocculant in reaction tank, makes waste water
The middle lesser colloid of partial size is converted to the biggish suspended particulate of partial size, then waste water is squeezed into flotation tank, using molten in flotation tank
The biggish suspended particulate of micro-bubble and the partial size that gas release generates adheres to, and forms the floating body that global density is less than water,
The floating body floats up to the water surface by buoyancy, and the Slag Scraping Device by the way that the water surface is arranged in is struck off；
D, through step C, treated that waste water enters two-stage A/O biochemical treatment system；
E, it is discharged after step D treated waste water enters sedimentation basin precipitating；
Coagulant is successively added in the step A and the pretreated process of flocculant progress is：First add coagulant polymeric alkali formula
Aluminium chloride simultaneously quickly stirs, and flocculant polyacrylamide is then added under conditions of mixing slowly, adds the process of coagulant
It is carried out in fast mixed pond, the process for adding flocculant carries out in slow mixed pond, flocculation aid is added simultaneously when adding coagulant, institute
Stating flocculation aid is sodium hydroxide；
Filter press used in the step B is chamber-type press filter and its retention partial size is 30 microns or more；
The coagulant and flocculant added in the step C is coagulant polymeric aluminium chloride and flocculant polyacrylamide respectively
Amine needs to be stirred in adding procedure；
The water-based ink waste water first passes through collecting pit collection, enters back into the conditioning tank, and the water-based ink waste water needs
It is aerated in conditioning tank；
The two-stage A/O biochemical treatment system needs to add nutritive salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962834.9A CN108911423A (en) | 2018-08-22 | 2018-08-22 | Aqueous ink waste water disposal process |
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|---|---|---|---|
| CN201810962834.9A CN108911423A (en) | 2018-08-22 | 2018-08-22 | Aqueous ink waste water disposal process |
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| CN108911423A true CN108911423A (en) | 2018-11-30 |
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| CN201810962834.9A Withdrawn CN108911423A (en) | 2018-08-22 | 2018-08-22 | Aqueous ink waste water disposal process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499115A (en) * | 2020-05-09 | 2020-08-07 | 上海环境保护有限公司 | High-concentration printing ink wastewater treatment process |
| CN115367969A (en) * | 2022-09-13 | 2022-11-22 | 武汉中测联环境技术有限公司 | High-concentration water-based ink wastewater treatment method and treatment system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159382A (en) * | 2013-04-11 | 2013-06-19 | 苏州南风优联环保工程有限公司 | Water-based ink wastewater treatment technique |
-
2018
- 2018-08-22 CN CN201810962834.9A patent/CN108911423A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159382A (en) * | 2013-04-11 | 2013-06-19 | 苏州南风优联环保工程有限公司 | Water-based ink wastewater treatment technique |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499115A (en) * | 2020-05-09 | 2020-08-07 | 上海环境保护有限公司 | High-concentration printing ink wastewater treatment process |
| CN115367969A (en) * | 2022-09-13 | 2022-11-22 | 武汉中测联环境技术有限公司 | High-concentration water-based ink wastewater treatment method and treatment system |
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Application publication date: 20181130 |
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