CN114084974A - Treatment method of glass grinding fluid - Google Patents
Treatment method of glass grinding fluid Download PDFInfo
- Publication number
- CN114084974A CN114084974A CN202111391319.8A CN202111391319A CN114084974A CN 114084974 A CN114084974 A CN 114084974A CN 202111391319 A CN202111391319 A CN 202111391319A CN 114084974 A CN114084974 A CN 114084974A
- Authority
- CN
- China
- Prior art keywords
- ultrafiltration
- liquid
- ceramic membrane
- cerium oxide
- solid particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping 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
- C02F1/001—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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/12—Nature of the water, waste water, sewage or sludge to be treated from the silicate or ceramic industries, e.g. waste waters from cement or glass factories
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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
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
Abstract
The invention relates to the technical field of chemical process technology and resource recycling, in particular to a treatment method of glass grinding fluid, which has the advantages of simple process flow, low requirement on equipment and small occupied area of the equipment, can completely recycle not only polishing powder in cerium oxide polishing powder waste liquid, but also water, can realize zero discharge of the cerium oxide polishing powder waste liquid, and is economic, environment-friendly and low in energy consumption; the method comprises the following steps: the method comprises the following steps: pretreating the glass grinding fluid waste liquid by a filter screen to remove larger solid particles to obtain pretreatment fluid I; step two; introducing the pretreatment solution I into a ceramic membrane ultrafiltration system to obtain clear, colorless and transparent ultrafiltration clear liquid and ultrafiltration concentrated solution II; step three: the ultrafiltration concentrated solution II enters a centrifugal system to obtain cerium oxide mud containing a small amount of water and liquid III containing trace solid particles; step four: and (4) returning the liquid III containing trace solid particles to the step two, and entering a ceramic membrane ultrafiltration system.
Description
Technical Field
The invention relates to the technical field of chemical process technology and resource recycling, in particular to a treatment method of glass grinding fluid.
Background
Cerium oxide can polish glass simultaneously by two modes of chemical decomposition and mechanical friction, has the advantages of small dosage, high polishing speed and high polishing efficiency, is widely applied to grinding and polishing of flat glass, but has difficult particle fine treatment because the particle size of cerium oxide is 0.5-1.5 mu m.
In the prior art, oxidized polishing powder is used for polishing and burnishing a plate glass base, the content of solid in used polishing powder waste liquid is about 0.5 percent, solid particles in the polishing powder waste liquid are small in particle size and not easy to settle, at present, flocculating agents such as polyacrylamide and polyaluminium are added into the waste liquid, feed liquid at the bottom layer is conveyed to a half-frame system for decoloring after settling, and waste mud with 70 percent of dry and solid content is obtained.
Disclosure of Invention
In order to solve the technical problems, the invention provides a treatment method of glass grinding fluid, which has the advantages of simple process flow, low requirement on equipment, small occupied area of the equipment, complete recovery of polishing powder in cerium oxide polishing powder waste liquid, complete recovery and reutilization of water, zero emission of cerium oxide polishing powder waste liquid, economy, environmental protection and low energy consumption.
The invention relates to a method for treating glass grinding fluid, which comprises the following steps:
the method comprises the following steps: pretreating the glass grinding fluid waste liquid by a filter screen to remove larger solid particles to obtain pretreatment fluid I;
step two; introducing the pretreatment solution I into a ceramic membrane ultrafiltration system to obtain clear, colorless and transparent ultrafiltration clear liquid and ultrafiltration concentrated solution II;
step three: the ultrafiltration concentrated solution II enters a centrifugal system to obtain cerium oxide mud (the main components of the glass grinding waste liquid are cerium oxide and trace glass powder) containing a small amount of water and liquid III containing trace solid particles;
step four: and (4) returning the liquid III containing trace solid particles to the step two, and entering a ceramic membrane ultrafiltration system.
Further, the filter screen in the first step is 200 meshes.
Further, the parameters of the ceramic membrane ultrafiltration system in the second step are as follows: the aperture of the ultrafiltration tube type ceramic membrane is 10-200nm, the operating temperature is 30-60 ℃, the operating pressure is 0.1-0.4MPa, and the concentration multiple is 5-20 times.
Further, the rotating speed of the centrifugal system in the third step is 3000-.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method adopts a pure physical separation process route to treat the cerium oxide polishing powder waste liquid, adopts a ceramic membrane and centrifugation process, adopts physical processes, and has the advantages of simple process, convenient operation, small equipment floor area and low energy consumption;
(2) The material rate and the clear liquid quality of the treatment of the invention are both superior to those of the traditional process, no new chemical agent is introduced, and no solid waste is generated;
(3) the method can recover all polishing powder particles in the cerium oxide polishing powder waste liquid, the treated water can be recycled, the recovered cerium oxide polishing powder can be used as a byproduct, the enterprise income is increased, the zero emission treatment of the cerium oxide polishing powder waste liquid is realized, the resource recovery and the resource reutilization are realized, and the method is green and environment-friendly.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention provides a method for treating waste liquid of cerium oxide polishing powder, which comprises the following steps: 1) the pretreatment step of the cerium oxide polishing powder waste liquid comprises the following steps: filtering the cerium oxide polishing powder waste liquid by a 200-mesh filter screen, and removing larger solid particles to prevent blocking or losing a flow channel of the tubular ceramic membrane to obtain a pretreatment liquid I; 2) introducing the pretreatment solution I into a tubular ceramic membrane ultrafiltration system for solid-liquid separation to realize concentration and enrichment of solid particles to obtain colorless, clear and transparent ultrafiltration clear liquid and ultrafiltration concentrated solution II of cerium oxide polishing powder, wherein the aperture of the ultrafiltration tubular ceramic membrane is 10-200nm, the operating temperature is 30-60 ℃, the operating pressure is 0.1-0.4MPa, and the concentration multiple is 5-20 times; 3) introducing the ultrafiltration concentrated solution II into a centrifugal system (the rotating speed is 3000-; 4) and returning the liquid III containing a small amount of solid particles to the ceramic membrane ultrafiltration system to remove the solid particles, thereby realizing the complete recycling of water.
According to the ceramic membrane and centrifugation process, the ultrafiltration concentrated solution II of the high-concentration cerium oxide polishing powder and colorless, clear and transparent ultrafiltration clear liquid can be obtained by concentrating and enriching solid particles in the cerium oxide polishing powder waste liquid through the ultrafiltration tubular ceramic membrane, and the cerium oxide polishing powder can be recovered after the ultrafiltration concentrated solution II is centrifuged; wherein the recovery rate of the cerium oxide polishing powder is 100 percent, and the ultrafiltration clear liquid treated by the tubular ceramic ultrafiltration membrane can be completely recycled after reaching the recycling standard.
Example 1
Taking 300kg of cerium oxide polishing powder waste liquid, filtering the waste liquid by a stainless steel filter screen of 200 meshes for pretreatment, and removing larger solid particles to prevent blocking or losing a flow channel of the tubular ceramic membrane to obtain pretreatment liquid I; concentrating the obtained pretreatment solution I by a 50nm ceramic membrane to obtain colorless, clear and transparent ultrafiltration clear liquid and ultrafiltration concentrated solution II, wherein the average flux of ultrafiltration is 300 LMH; introducing the ultrafiltration concentrated solution II into a centrifugal system for solid-liquid separation to obtain cerium oxide polishing powder solid with dry solid content of 40-50% and liquid III containing trace individual particles; returning the liquid III to the ceramic membrane ultrafiltration system for further water recovery; wherein the recovery rate of the cerium oxide polishing powder in the cerium oxide polishing powder wastewater is 100 percent, water can be completely recovered and reused, and the flux of the ceramic membrane is completely recovered by 100 percent after being cleaned.
Example 2
Taking 300kg of cerium oxide polishing powder waste liquid, filtering the waste liquid by a stainless steel filter screen of 200 meshes for pretreatment, and removing larger solid particles to prevent blocking or losing a flow channel of the tubular ceramic membrane to obtain pretreatment liquid I; concentrating the obtained pretreatment solution I by a 200nm ceramic membrane to obtain colorless, clear and transparent ultrafiltration clear liquid and ultrafiltration concentrated solution II, wherein the flux of ultrafiltration is 150 LMH; and (3) introducing the ultrafiltration concentrated solution II into a centrifugal system for solid-liquid separation to obtain cerium oxide polishing powder solid with dry solid content of 40-50% and liquid III containing trace individual particles, wherein the flux of the ceramic membrane is recovered by 60% after cleaning.
Example 3
Taking 300kg of cerium oxide polishing powder waste liquid, filtering the waste liquid by a stainless steel filter screen of 200 meshes for pretreatment, and removing larger solid particles to prevent blocking or losing a flow channel of the tubular ceramic membrane to obtain pretreatment liquid I; concentrating the obtained pretreatment solution I by a 30nm ceramic membrane to obtain colorless, clear and transparent ultrafiltration clear liquid and ultrafiltration concentrated solution II, wherein the average flow rate of the clear liquid is 300 LMH; introducing the ultrafiltration concentrated solution II into a centrifugal system for solid-liquid separation to obtain cerium oxide polishing powder solid with dry solid content of 40-50% and liquid III containing trace individual particles; returning the liquid III to the ceramic membrane ultrafiltration system for further water recovery; wherein the recovery rate of the cerium oxide polishing powder in the cerium oxide polishing powder wastewater is 100 percent, water can be completely recovered and reused, and the flux of the ceramic membrane is completely recovered after cleaning.
Example 4
Taking 300kg of cerium oxide polishing powder waste liquid, filtering the waste liquid by a stainless steel filter screen of 200 meshes for pretreatment, and removing larger solid particles to prevent blocking or losing a flow channel of the tubular ceramic membrane to obtain pretreatment liquid I; concentrating the obtained pretreatment solution I by a 10nm ceramic membrane to obtain colorless, clear and transparent ultrafiltration clear liquid and ultrafiltration concentrated solution II, wherein the average flux of the clear liquid is 75 LMH; introducing the ultrafiltration concentrated solution II into a centrifugal system for solid-liquid separation to obtain cerium oxide polishing powder solid with dry solid content of 40-50% and liquid III containing trace individual particles; returning the liquid III to the ceramic membrane ultrafiltration system for further water recovery; wherein the recovery rate of the cerium oxide polishing powder in the cerium oxide polishing powder wastewater is 100 percent, water can be completely recovered and reused, and the flux of the ceramic membrane is completely recovered after cleaning.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A method for treating a glass polishing slurry, comprising:
The method comprises the following steps: pretreating the glass grinding fluid waste liquid by a filter screen to remove larger solid particles to obtain pretreatment fluid I;
step two; introducing the pretreatment solution I into a ceramic membrane ultrafiltration system to obtain clear, colorless and transparent ultrafiltration clear liquid and ultrafiltration concentrated solution II;
step three: the ultrafiltration concentrated solution II enters a centrifugal system to obtain cerium oxide mud containing a small amount of water and liquid III containing trace solid particles;
step four: and (4) returning the liquid III containing trace solid particles to the step two, and entering a ceramic membrane ultrafiltration system.
2. The method according to claim 1, wherein the screen in the first step is 200 mesh.
3. The method according to claim 2, wherein the parameters of the ceramic membrane ultrafiltration system in the second step are as follows: the aperture of the ultrafiltration tube type ceramic membrane is 10-200nm, the operating temperature is 30-60 ℃, the operating pressure is 0.1-0.4MPa, and the concentration multiple is 5-20 times.
4. The method as claimed in claim 3, wherein the rotation speed of the centrifugal system in the third step is 3000-8000 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111391319.8A CN114084974B (en) | 2021-11-23 | 2021-11-23 | Glass grinding fluid treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111391319.8A CN114084974B (en) | 2021-11-23 | 2021-11-23 | Glass grinding fluid treatment method |
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| CN114084974A true CN114084974A (en) | 2022-02-25 |
| CN114084974B CN114084974B (en) | 2023-07-14 |
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Citations (11)
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|---|---|---|---|---|
| DE3926586A1 (en) * | 1989-08-11 | 1991-02-14 | Haecker Maschinen Gmbh Ing | Cleaning waste water from glass industry - using type I or II anion exchangers to remove arsenic and antimony fluoride complex ions |
| CN102086521A (en) * | 2010-12-10 | 2011-06-08 | 江苏久吾高科技股份有限公司 | Adsorption and ceramic membrane coupling process for removing sulfate ions from saline water |
| WO2011149883A1 (en) * | 2010-05-25 | 2011-12-01 | Hpd, Llc | Gasification process |
| WO2014042431A1 (en) * | 2012-09-14 | 2014-03-20 | 주식회사 엘지화학 | Method for regenerating spent ceria-containing polishing agent |
| CN108640322A (en) * | 2018-07-23 | 2018-10-12 | 合肥学院 | A kind of ceramic membrane filter absorption processing system and its working method |
| CN108658270A (en) * | 2017-11-27 | 2018-10-16 | 江苏久吾高科技股份有限公司 | A kind of processing method and processing device of titanium white production waste water |
| CN108793585A (en) * | 2018-05-15 | 2018-11-13 | 安徽亿普特集团有限公司 | A kind of waste water treatment process |
| CN208617512U (en) * | 2018-06-11 | 2019-03-19 | 江苏久吾高科技股份有限公司 | A kind of reclamation set of glass cutting liquid |
| CN110577291A (en) * | 2018-06-11 | 2019-12-17 | 江苏久吾高科技股份有限公司 | method and device for recycling glass cutting fluid |
| CN111957215A (en) * | 2020-07-24 | 2020-11-20 | 南京工业大学 | Oil-water separation ceramic membrane, preparation method and oil-water separation device |
| CN213498578U (en) * | 2020-11-16 | 2021-06-22 | 云南驰宏国际锗业有限公司 | Device for efficiently separating germanium and polishing waste liquid |
-
2021
- 2021-11-23 CN CN202111391319.8A patent/CN114084974B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3926586A1 (en) * | 1989-08-11 | 1991-02-14 | Haecker Maschinen Gmbh Ing | Cleaning waste water from glass industry - using type I or II anion exchangers to remove arsenic and antimony fluoride complex ions |
| WO2011149883A1 (en) * | 2010-05-25 | 2011-12-01 | Hpd, Llc | Gasification process |
| CN102086521A (en) * | 2010-12-10 | 2011-06-08 | 江苏久吾高科技股份有限公司 | Adsorption and ceramic membrane coupling process for removing sulfate ions from saline water |
| WO2014042431A1 (en) * | 2012-09-14 | 2014-03-20 | 주식회사 엘지화학 | Method for regenerating spent ceria-containing polishing agent |
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| CN108793585A (en) * | 2018-05-15 | 2018-11-13 | 安徽亿普特集团有限公司 | A kind of waste water treatment process |
| CN208617512U (en) * | 2018-06-11 | 2019-03-19 | 江苏久吾高科技股份有限公司 | A kind of reclamation set of glass cutting liquid |
| CN110577291A (en) * | 2018-06-11 | 2019-12-17 | 江苏久吾高科技股份有限公司 | method and device for recycling glass cutting fluid |
| CN108640322A (en) * | 2018-07-23 | 2018-10-12 | 合肥学院 | A kind of ceramic membrane filter absorption processing system and its working method |
| CN111957215A (en) * | 2020-07-24 | 2020-11-20 | 南京工业大学 | Oil-water separation ceramic membrane, preparation method and oil-water separation device |
| CN213498578U (en) * | 2020-11-16 | 2021-06-22 | 云南驰宏国际锗业有限公司 | Device for efficiently separating germanium and polishing waste liquid |
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| CN114084974B (en) | 2023-07-14 |
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