CN109574418A - A kind of purification reuse method of printing wastewater - Google Patents
A kind of purification reuse method of printing wastewater Download PDFInfo
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- CN109574418A CN109574418A CN201910070047.8A CN201910070047A CN109574418A CN 109574418 A CN109574418 A CN 109574418A CN 201910070047 A CN201910070047 A CN 201910070047A CN 109574418 A CN109574418 A CN 109574418A
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- printing wastewater
- waste water
- reuse method
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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
-
- 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
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- 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
- C02F3/02—Aerobic processes
-
- 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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/108—Immobilising gels, polymers or the like
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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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of purification reuse methods of printing wastewater, belong to printing technology, printing wastewater is entered into conditioning tank by elevator pump first, coagulant is added in conditioning tank makes the suspended matter in waste water form large particle, waste water drains into flotation tank again, it is acted on through air bearing, it is removed after particle suspensions aggregation by Slag Scraping Device, the bottom clear water of flotation tank is sent again to oxidation pond, organic matter decomposes under the action of aerobic microbiological, most of organic matter is eliminated, waste water is sent again to biochemistry pool, removes COD and BOD5Particulate matter settleability improves, sludge settling is to biochemical bottom of pond portion, supernatant is sent again to sand filter, after filtering, obtains eliminating the purified water after coloration, SS, petroleum-type compound, it is finally discharged into clear water reserviors and is collected, to recycle, solving the purified purified water of existing printing wastewater has amounts of residual contamination, the not high problem low with purified water reuse ratio of degree of purification.
Description
Technical field
The invention belongs to printing technologies, are related to a kind of purification reuse method of printing wastewater.
Background technique
Water is Source of life, is unique irreplaceable natural resources on the earth.China's water resources ownership per capita is only
The 1/4 of world average level, insufficient water sources, water pollution and water environment ecological degeneration have become the restraining factors of development.Protection
Water resource, improves the important content that water environment ecology is protection environment and the Implement of sustainable development at prevention and treatment water pollution.
Printing wastewater is the total of the printing raffinate generated in printing process, wiping version waste water, plate-making waste water, cleaning waste water etc.
Claim, is that a kind of comparison is difficult to the industrial wastewater administered, containing a large amount of metal ion, ink, alkali, machine oil etc. in printing wastewater,
Water quality is complicated, and high organic content difficult to degrade, biodegradability is poor, and alkalinity is big, and coloration is high, and processing difficulty is bigger.
Existing purification method for effluent include materilization freatment method, chemical treatment method, biochemical processing method, at Magneto separate
Reason method, but still have amounts of residual contamination using the purified water that above-mentioned any single method is handled, degree of purification is not high,
So that the reuse ratio of purified water is not high.
Therefore, the invention proposes a kind of purification reuse methods of printing wastewater.
Summary of the invention
It is an object of the invention to: a kind of purification reuse method of printing wastewater is provided, it is useless to solve existing printing
Purified water after Water warfare has amounts of residual contamination, the not high problem low with purified water reuse ratio of degree of purification.
The technical solution adopted by the invention is as follows:
A kind of purification reuse method of printing wastewater, comprising the following steps:
Step 1: printing wastewater being entered into conditioning tank by elevator pump, coagulant is added in conditioning tank makes hanging in waste water
Floating object forms large particle, then send to flotation tank；
Step 2: the waste water of flotation tank is drained into, is acted on through air bearing, the suspended matter of particle is effectively assembled, reach solid and liquid separation,
Suspended matter is removed by Slag Scraping Device, tentatively reduces the concentration of suspended particulate substance in water, and the bottom clear water of flotation tank is sent again to oxidation
Pond；
Step 3: draining into the waste water of oxidation pond, useless Organic substance in water decomposes under the action of aerobic microbiological, eliminates useless
Most of organic matter in water, then give to biochemistry pool；
Step 4: draining into the waste water of biochemistry pool, COD and BOD therein5It is largely removed, water quality improves, particulate matter sedimentation
Property improve, the bottom of sludge settling to biochemistry pool, the supernatant of biochemistry pool send again to sand filter；
Step 5: draining into the supernatant of sand filter, the inorganic nature colloid in floccule body and raw wastewater that separation biochemistry pool generates
Particle after filtering, obtains eliminating the purified water after coloration, SS, petroleum-type compound, is discharged into clear water reserviors and is collected, with
Just it recycles.
Further, the sludge that the flotation tank, oxidation pond, biochemistry pool and sand filter generate passes through screw pump through over-voltage
Filter effect is discharged into sludge drying pond, transports outward after carrying out precipitation concentration.
Further, the supernatant in the sludge drying pond flows back into conditioning tank, forms the reflow treatment of sewage.
Further, the content of COD is 1000~5000mg/L in the printing wastewater in the step 1, and the content of BOD is
The content of 200~1000mg/L, SS are 500~1000mg/L, and the content of ink is 100~500mg/L, and pH value is 8~10.
Further, the coagulant in the step 1 is the mixing of organic matter and inorganic matter, and the organic matter includes polychlorostyrene
Changing aluminium, polyiron sulfate, polysilicate aluminum chloride, polymeric aluminum sulfate silicate or ferric sulfate of polymerized silica, the inorganic matter includes polyacrylamide, diformazan
Base propyl ammonium chloride.
Further, concentration of the coagulant in conditioning tank is 100-140mg/L.
Further, water circulating pump is set up in the flotation tank in the step 2, forms interior circulation.
Further, the air bearing bottom of pond portion in the step 2 is provided with diving mixer, controls the pool inner water power residence time
It is 6~8 hours.
Further, the oxidation pond in the step 3 uses A/B technique denitrogenation dephosphorizing, and in operational process, organic matter is by A
Section microorganism is effectively degraded, then by B sections of microbiological oxidations at carbon dioxide and water, is a continuous degradation process.
Further, fibre bundle is hung in the biochemistry pool in the step 4 as filler, is removed using the microorganism in pond
Major part in waste water is organic and inorganic pollution.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. a kind of purification reuse method of printing wastewater, first using materializing strategy in such a way that biochemical treatment combines
Printing wastewater is first entered into conditioning tank by elevator pump, coagulant is added in conditioning tank makes the suspended matter in waste water form big
Grain object, waste water drain into flotation tank again, act on through air bearing, are removed after particle suspensions aggregation by Slag Scraping Device, the bottom of flotation tank is clear
Water is sent again to oxidation pond, and organic matter decomposes under the action of aerobic microbiological, eliminates most of organic matter, and waste water is sent again to life
Change pond, removes COD and BOD5, particulate matter settleability improves, and to biochemistry bottom of pond portion, supernatant send again to sand filter sludge settling,
After filtering, obtain eliminating the purified water after coloration, SS, petroleum-type compound, purified water water quality qualification rate up to 99.5% or more,
COD, BOD higher to accounting in printing wastewater5, SS and ink all have very high removal rate, do not have undesired residues,
The degree of purification for improving printing wastewater improves the reuse ratio of purified water.
2. the sludge that heretofore described flotation tank, oxidation pond, biochemistry pool and sand filter generate is passed through by screw pump
Filter press effect is discharged into sludge drying pond, transports outward after carrying out precipitation concentration, waste water and solid refuse is accomplished classification recycling, more
The supernatant of environmentally-friendly sanitary, the sludge drying pond flows back into conditioning tank, forms the reflow treatment of sewage, keeps water treatment more steady
Fixed, waste water resource, does not keep the rate of recovery of printing wastewater higher.
3. setting up water circulating pump in the flotation tank in step 2 of the present invention, interior circulation is formed, the particle of flotation tank is made
Suspended matter is easier to assemble, and increases the treatment effect to sewage, and the air bearing bottom of pond portion is provided with diving mixer, controls in pond
Hydraulic detention time improves the oxidation susceptibility and biochemical property of waste water.
4. the oxidation pond in step 3 of the present invention substitutes traditional aerobic biochemical process using A/B technique denitrogenation dephosphorizing and takes off
Nitrogen dephosphorization, volume accounting is smaller, and the sedimentation time is shorter, and aeration time is shorter, and cost is lower, and removal rate is higher.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually herein
The component for locating the embodiment of the present invention of description can be arranged and be designed with a variety of different configurations.
Therefore, the model of claimed invention is not intended to limit to the detailed description of the embodiment of the present invention below
It encloses, but is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
Feature and performance of the invention are described in further detail below with reference to embodiment.
Embodiment one
A kind of purification reuse method for printing wastewater that present pre-ferred embodiments provide, comprising the following steps:
Step 1: printing wastewater being entered into conditioning tank by elevator pump, coagulant is added in conditioning tank makes hanging in waste water
Floating object forms large particle, then send to flotation tank；
Step 2: the waste water of flotation tank is drained into, is acted on through air bearing, the suspended matter of particle is effectively assembled, reach solid and liquid separation,
Suspended matter is removed by Slag Scraping Device, tentatively reduces the concentration of suspended particulate substance in water, and the bottom clear water of flotation tank is sent again to oxidation
Pond；
Step 3: draining into the waste water of oxidation pond, useless Organic substance in water decomposes under the action of aerobic microbiological, eliminates useless
Most of organic matter in water, then give to biochemistry pool；
Step 4: draining into the waste water of biochemistry pool, COD and BOD therein5It is largely removed, water quality improves, particulate matter sedimentation
Property improve, the bottom of sludge settling to biochemistry pool, the supernatant of biochemistry pool send again to sand filter；
Step 5: draining into the supernatant of sand filter, the inorganic nature colloid in floccule body and raw wastewater that separation biochemistry pool generates
Particle after filtering, obtains eliminating the purified water after coloration, SS, petroleum-type compound, is discharged into clear water reserviors and is collected, with
Just it recycles.
Further, the sludge that the flotation tank, oxidation pond, biochemistry pool and sand filter generate passes through screw pump through over-voltage
Filter effect is discharged into sludge drying pond, transports outward after carrying out precipitation concentration, and waste water and solid refuse are accomplished classification recycling, more ring
Defendance life, the screw pump use G25-1/2 model, parameter are as follows: Q=1.5m3/ h, H=60m, P=1.1KW, suction 2m,
The filter press uses XMJ10/500-UB model.
Further, the supernatant in the sludge drying pond flows back into conditioning tank, forms the reflow treatment of sewage, makes water
Matter processing is more stable, and waste water resource, does not keep the rate of recovery of printing wastewater higher, and the dischargeable capacity in the sludge drying pond is
1.5m3, outer dimension a × b × H=1000mm × 1500mm × 1000mm, structure is A3 steel construction.
Further, the content of COD is 1000~5000mg/L in the printing wastewater in the step 1, and the content of BOD is
The content of 200~1000mg/L, SS are 500~1000mg/L, and the content of ink is 100~500mg/L, and pH value is 8~10.
Further, the elevator pump in the step 1 uses 25FB-8Z model, parameter are as follows: Q=1.5m3/ h, H=
8.5m, P=0.25KW.
Further, the grid gap of the conditioning tank in the step 1 is 8 millimeters, and net width is 600 millimeters, design
Processing capacity is 1m3/ h, outer dimension a × b × H=2000mm × 2000mm × 2000mm, structure are brick structure.
Further, the coagulant in the step 1 is the mixing of organic matter and inorganic matter, and the organic matter includes polychlorostyrene
Changing aluminium, polyiron sulfate, polysilicate aluminum chloride, polymeric aluminum sulfate silicate or ferric sulfate of polymerized silica, the inorganic matter includes polyacrylamide, diformazan
Base propyl ammonium chloride.
Further, concentration of the coagulant in conditioning tank is 100-140mg/L.
Further, water circulating pump is set up in the flotation tank in the step 2, is formed interior circulation, is made of flotation tank
Grain suspended matter is easier to assemble, and increases the treatment effect to sewage, and the water circulating pump uses 25FB-8Z model, parameter are as follows: Q
=1.5m3/ h, H=8.5m, P=0.25KW.
Further, the processing capacity of the flotation tank is 1m3/ h, outer dimension a × b × H=600mm × 1260mm
× 2520mm, structure are A3 steel construction.
Further, the air bearing bottom of pond portion in the step 2 is provided with diving mixer, controls the pool inner water power residence time
It is 6~8 hours, for improving the oxidation susceptibility and biochemical property of waste water.
Further, the oxidation pond in the step 3 uses A/B technique denitrogenation dephosphorizing, and in operational process, organic matter is by A
Section microorganism is effectively degraded, then by B sections of microbiological oxidations at carbon dioxide and water, is a continuous degradation process, the A/B
The effect of technique denitrogenation dephosphorizing is than much higher times of effect of traditional aerobic biochemical process denitrogenation dephosphorizing, and A/B technique total volume is than good
Oxygen biochemical method technique total volume saves 20%~30%；The oxidation pond sedimentation time of A/B technique is better than traditional aerobic biochemical process
The oxygen biochemistry pool sedimentation time is short, this is because the sludge in A/B technique has good settling property；When the aeration of A/B technique
Between on also it is shorter than traditional aerobic biochemical process very much, this is because in A/B technique by means of A sections flocculation and suction-operated remove
The speed of organic matter is fast, and makes subsequent B sections of influent load due to can remove 40%~70% organic object amount in A sections
The reason mitigated significantly；From the total time of two kinds of different disposal technique comparatively, the total time of A/B technique is 5~7.5 small
When, and the total time of traditional aerobic biochemical process is 7.5~10 hours, thus A/B technique can save 15%~25% cost；A/
The BOD of B technique5For removal rate up to 90%~95%, COD removal rate up to 80%~90%, phosphor-removing effect is up to 96% or more,
And traditional aerobic biochemical process does not have so high removal rate, and the phosphor-removing effect of traditional aerobic biochemical process is generally difficult to reach
To 25%, this will also consume a large amount of oxygenation energy consumption.
Further, the oxidation pond intake in a short time pH value be 4 or the long period in pH value be in 3~5.
Further, the processing capacity of the oxidation pond is 1m3/ h, sludge loading 0.6kgBOD5/(m3× d), outside
Shape size a × b × H=1000mm × 1260mm × 2520mm, structure are A3 steel construction.
Further, fibre bundle is hung in the biochemistry pool in the step 4 as filler, is removed using the microorganism in pond
Major part in waste water is organic and inorganic pollution.Outer dimension a × b × H=1000mm × 1260mm of the biochemistry pool ×
2520mm, structure are A3 steel construction.
Further, outer dimension a × b × H=500mm × 1260mm × 2520mm of the sand filter, structure are
A3 steel construction.
Further, outer dimension a × b × H=500mm × 1260mm × 2520mm of the clear water reserviors, structure are
A3 steel construction.
The purified water water quality qualification rate that the present embodiment obtains up to 99.5% or more, content≤100mg/L of COD therein,
Content≤60mg/L of content≤30mg/L of BOD, SS, content≤10mg/L of ink, pH value only have 6~8, it is sufficient to prove this
It invents using materializing strategy in such a way that biochemical treatment combines, COD, BOD higher to accounting in printing wastewater5, SS and oil
Ink all has very high removal rate, does not have undesired residues, improves the degree of purification of printing wastewater, improves purified water
Reuse ratio.
The foregoing is merely illustrative of the preferred embodiments of the present invention, the protection scope being not intended to limit the invention, any
Those skilled in the art within the spirit and principles in the present invention made by any modifications, equivalent replacements, and improvements etc.,
It should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of purification reuse method of printing wastewater, which comprises the following steps:
Step 1: printing wastewater being entered into conditioning tank by elevator pump, coagulant is added in conditioning tank makes the suspended matter in waste water
Large particle is formed, then is sent to flotation tank；
Step 2: draining into the waste water of flotation tank, acted on through air bearing, the suspended matter of particle is effectively assembled, and solid and liquid separation is reached, and suspends
Object is removed by Slag Scraping Device, tentatively reduces the concentration of suspended particulate substance in water, and the bottom clear water of flotation tank is sent again to oxidation pond；
Step 3: draining into the waste water of oxidation pond, useless Organic substance in water decomposes under the action of aerobic microbiological, eliminates in waste water
Most of organic matter, then send to biochemistry pool；
Step 4: draining into the waste water of biochemistry pool, COD and BOD therein5It is largely removed, water quality improves, and particulate matter settleability changes
Kind, the bottom of sludge settling to biochemistry pool, the supernatant of biochemistry pool is sent again to sand filter；
Step 5: draining into the supernatant of sand filter, the inorganic nature colloid in floccule body and raw wastewater that separation biochemistry pool generates
Grain, after filtering, obtains eliminating the purified water after coloration, SS, petroleum-type compound, is discharged into clear water reserviors and is collected, so as to
It recycles.
2. a kind of purification reuse method of printing wastewater according to claim 1, it is characterised in that: the flotation tank,
The sludge that oxidation pond, biochemistry pool and sand filter generate passes through screw pump and is discharged into sludge drying pond by filter press effect, into
It is transported outward after row precipitation concentration.
3. a kind of purification reuse method of printing wastewater according to claim 2, it is characterised in that: the sludge drying
The supernatant in pond flows back into conditioning tank, forms the reflow treatment of sewage.
4. a kind of purification reuse method of printing wastewater according to claim 1, it is characterised in that: in the step 1
Printing wastewater in the content of COD be 1000~5000mg/L, the content of BOD is 200~1000mg/L, and the content of SS is 500
~1000mg/L, the content of ink are 100~500mg/L, and pH value is 8~10.
5. a kind of purification reuse method of printing wastewater according to claim 1, it is characterised in that: in the step 1
Coagulant be organic matter and inorganic matter mixing, the organic matter includes polyaluminium chloride, polyiron sulfate, polysilicate aluminum chloride, poly-
Aluminium silicate-sulphate or ferric sulfate of polymerized silica, the inorganic matter include polyacrylamide, dimethyl propylene ammonium chloride.
6. a kind of purification reuse method of printing wastewater according to claim 5, it is characterised in that: the coagulant exists
Concentration in conditioning tank is 100-140mg/L.
7. a kind of purification reuse method of printing wastewater according to claim 1, it is characterised in that: in the step 2
Flotation tank in set up water circulating pump, formed in circulation.
8. a kind of purification reuse method of printing wastewater according to claim 1, it is characterised in that: in the step 2
Air bearing bottom of pond portion be provided with diving mixer, the control pool inner water power residence time is 6~8 hours.
9. a kind of purification reuse method of printing wastewater according to claim 1, it is characterised in that: in the step 3
Oxidation pond use A/B technique denitrogenation dephosphorizing, in operational process, organic matter is effectively degraded by A sections of microorganisms, then micro- by B sections
It is a continuous degradation process biological oxidation to carbon dioxide and water.
10. a kind of purification reuse method of printing wastewater according to claim 1, it is characterised in that: in the step 4
Biochemistry pool in hang with fibre bundle as filler, using the major part in the microorganism removal waste water in pond is organic and inorganic pollution
Object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910070047.8A CN109574418A (en) | 2019-01-24 | 2019-01-24 | A kind of purification reuse method of printing wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910070047.8A CN109574418A (en) | 2019-01-24 | 2019-01-24 | A kind of purification reuse method of printing wastewater |
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ID=65917393
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018261A (en) * | 2019-12-30 | 2020-04-17 | 宏观世纪（天津）科技股份有限公司 | Method for treating printing wastewater in carton packaging |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0567866A1 (en) * | 1992-04-25 | 1993-11-03 | Dornier Gmbh | Treating of waste water from printing plants |
| CN103288306A (en) * | 2013-07-01 | 2013-09-11 | 国家电网公司 | Process for treating heavy oil waste water |
| CN103539315A (en) * | 2013-09-25 | 2014-01-29 | 安徽省绿巨人环境技术有限公司 | Printing wastewater treatment equipment and process |
-
2019
- 2019-01-24 CN CN201910070047.8A patent/CN109574418A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0567866A1 (en) * | 1992-04-25 | 1993-11-03 | Dornier Gmbh | Treating of waste water from printing plants |
| CN103288306A (en) * | 2013-07-01 | 2013-09-11 | 国家电网公司 | Process for treating heavy oil waste water |
| CN103539315A (en) * | 2013-09-25 | 2014-01-29 | 安徽省绿巨人环境技术有限公司 | Printing wastewater treatment equipment and process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018261A (en) * | 2019-12-30 | 2020-04-17 | 宏观世纪（天津）科技股份有限公司 | Method for treating printing wastewater in carton packaging |
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