CN111559815A - Treatment process for cleaning waste liquid - Google Patents
Treatment process for cleaning waste liquid Download PDFInfo
- Publication number
- CN111559815A CN111559815A CN202010386463.1A CN202010386463A CN111559815A CN 111559815 A CN111559815 A CN 111559815A CN 202010386463 A CN202010386463 A CN 202010386463A CN 111559815 A CN111559815 A CN 111559815A
- Authority
- CN
- China
- Prior art keywords
- waste liquid
- membrane system
- dtro membrane
- cleaning
- liquid
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 87
- 239000002699 waste material Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004140 cleaning Methods 0.000 title claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 56
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 10
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract description 9
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000460 chlorine Substances 0.000 claims abstract description 6
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 6
- 239000006004 Quartz sand Substances 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- 229910001385 heavy metal Inorganic materials 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000000049 pigment Substances 0.000 claims description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
Classifications
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Abstract
The invention discloses a treatment process for cleaning waste liquid, which comprises the following steps: (1) passing the waste liquid through a quartz sand filter; (2) then the waste liquid passes through an activated carbon filter; (3) then the waste liquid passes through a scale inhibitor container; (4) then the waste liquid passes through a security filter; (5) finally, the waste liquid passes through a DTRO membrane system; the treatment process is used for preparing the recyclable effluent, the COD of the effluent is less than or equal to 300, and the PH value of the effluent is equal to 7. According to the treatment process for cleaning the waste liquid, the residual chlorine, suspended matters and mechanical impurities in the waste liquid can be effectively filtered before the waste liquid enters the filtering membrane system, calcium ions and magnesium ions can be prevented from being crystallized and separated out, and the service life of the filtering membrane is effectively prolonged; the waste liquid passes through the DTRO membrane system, most of hardness is removed by utilizing the high anti-pollution performance of the DTRO membrane, and the method has the advantages of high effluent quality, stable separation performance, low energy consumption, high recovery rate and the like.
Description
Technical Field
The invention relates to a treatment process for cleaning waste liquid.
Background
The existing waste liquid treatment method has the advantages of more process steps, higher treatment cost, relatively lower treatment efficiency, poorer effluent quality and shorter service life of a filtering membrane.
Disclosure of Invention
The invention aims to provide a treatment process for cleaning waste liquid, which has the advantages of simple steps, reasonable cost, higher water outlet efficiency, better water quality of outlet water and longer service life of a filtering membrane.
In order to achieve the purpose, the invention adopts the technical scheme that:
a process for treating a cleaning effluent comprising the steps of:
(1) passing the waste liquid through a quartz sand filter to filter suspended matters in the waste liquid;
(2) then the waste liquid passes through an activated carbon filter to adsorb residual chlorine, micromolecular organic matters, peculiar smell, colloid, pigment and heavy metal ions;
(3) then the waste liquid passes through a scale inhibitor container, and calcium ions and magnesium ions in the waste liquid are prevented from being crystallized and separated out through a scale inhibitor;
(4) then the waste liquid passes through a security filter to filter mechanical impurities with the particle size larger than 5 microns;
(5) finally, the waste liquid passes through a DTRO membrane system;
the treatment process is used for preparing recyclable effluent, COD (chemical oxygen demand) of the effluent is less than or equal to 300, and the PH value of the effluent is equal to 7.
Preferably, the DTRO membrane system comprises a power pump and a working liquid level, and after the liquid in the DTRO membrane system reaches the working liquid level, the power pump is started, and the DTRO membrane system starts to work.
Preferably, the DTRO membrane system comprises a low liquid level and a high liquid level, and waste liquid is supplemented when the liquid reaches the low liquid level; and stopping replenishing the waste liquid when the liquid reaches a high liquid level.
Preferably, in the DTRO membrane system, when the liquid production amount is abnormally reduced, the DTRO membrane system stops working and performs membrane cleaning.
Preferably, when the DTRO membrane system is cleaned, the cleaning agent is acid liquor and/or alkali liquor.
More preferably, before the washing with alkali is carried out after the washing with acid, clear water is introduced into the DTRO membrane system; and introducing clear water into the DTRO membrane system before washing with alkali and then acid.
Preferably, the liquid output from the DTRO membrane system is subjected to ultraviolet disinfection.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the treatment process for cleaning the waste liquid, the residual chlorine, suspended matters and mechanical impurities in the waste liquid can be effectively filtered before the waste liquid enters the filtering membrane system, calcium ions and magnesium ions can be prevented from being crystallized and separated out, and the service life of the filtering membrane is effectively prolonged; the waste liquid passes through the DTRO membrane system, most of hardness is removed by utilizing the high anti-pollution performance of the DTRO membrane, and the method has the advantages of high effluent quality, stable separation performance, low energy consumption, high recovery rate and the like.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
The treatment process for the cleaning waste liquid is used for treating the cleaning waste liquid with COD (chemical oxygen demand) of 7000-10000 and a pH value of about 8.5, and comprises the following steps of:
(1) and (4) passing the waste liquid through a quartz sand filter to filter suspended matters in the waste liquid.
Through the quartz sand filter material, hold back the suspended solid in the waste liquid, take place overlap and bridging effect again between these suspended solid that are held back, play the effect that continues to filter suspended solid, further purified the waste liquid.
(2) And then the waste liquid passes through an activated carbon filter to adsorb residual chlorine, micromolecular organic matters, peculiar smell, colloid, pigment and heavy metal ions.
Absorbing residual chlorine to prevent the oxidation and degradation of a post-stage filter membrane; also has COD reducing effect; the SDI value of the effluent can be reduced, so that the SDI is less than 5, and the TOC is less than 2 ppm.
(3) And then the waste liquid passes through a scale inhibitor container, and calcium ions and magnesium ions in the waste liquid are prevented from being crystallized and separated out by the scale inhibitor in the waste liquid.
In the filtering membrane system, calcium ions and magnesium ions in water are gradually concentrated along with the continuous seepage of fresh water, and when the concentration reaches the saturation degree of the calcium ions and the magnesium ions, the calcium ions and the magnesium ions are crystallized and separated out on the concentrated water side or in the pipeline of the filtering membrane to form a structural layer, so that the water yield and the water quality of the filtering membrane are influenced. Through the scale inhibitor container, the waste liquid passes through the scale inhibitor, and the chelation of the scale inhibitor is utilized, so that calcium ions and magnesium ions can be prevented from being crystallized and separated out, and the water yield and the water quality of the produced water are improved.
(4) And then the waste liquid passes through a security filter to filter mechanical impurities with the particle size larger than 5 microns so as to prevent large-particle substances from entering the filtering membrane and prolong the service life of the filtering membrane.
(5) And finally, passing the waste liquid through a DTRO membrane system.
In the filtering membrane system, the high pollution resistance of the DTRO membrane is utilized to remove most of hardness, and the filtering membrane system has the advantages of high effluent quality, stable separation performance, low energy consumption, high recovery rate and the like.
(6) Ultraviolet sterilization is carried out, and the effluent is led to a discharge point or a use point.
The treatment process is used for preparing the recyclable effluent, the COD of the effluent is less than or equal to 300, and the PH value of the effluent is equal to 7.
The DTRO membrane system comprises a power pump and a working liquid level, after liquid in the DTRO membrane system reaches the working liquid level, the power pump is started, the DTRO membrane system starts to work, liquid in the DTRO membrane system is filtered, and filtered clear liquid is discharged into a next-stage system.
The DTRO membrane system comprises a low liquid level and a high liquid level, and waste liquid is supplemented when the liquid reaches the low liquid level; and stopping replenishing the waste liquid when the liquid reaches a high liquid level.
In the DTRO membrane system, when the liquid production amount is abnormally reduced, the DTRO membrane system stops working and performs membrane cleaning.
When the DTRO membrane system is cleaned, the cleaning agent is acid liquor and/or alkali liquor.
Introducing clear water into the DTRO membrane system before acid washing and alkali washing; and (3) before the alkaline washing and the acid washing, introducing clear water into the DTRO membrane system to prevent the loss of the effect of acid-base neutralization.
Wherein, the acid washing, the alkali washing and the clear water washing are all reverse washing.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (7)
1. A treatment process for cleaning waste liquid is characterized in that: the method comprises the following steps:
(1) passing the waste liquid through a quartz sand filter to filter suspended matters in the waste liquid;
(2) then the waste liquid passes through an activated carbon filter to adsorb residual chlorine, micromolecular organic matters, peculiar smell, colloid, pigment and heavy metal ions;
(3) then the waste liquid passes through a scale inhibitor container, and calcium ions and magnesium ions in the waste liquid are prevented from being crystallized and separated out through a scale inhibitor;
(4) then the waste liquid passes through a security filter to filter mechanical impurities with the particle size larger than 5 microns;
(5) finally, the waste liquid passes through a DTRO membrane system;
the treatment process is used for preparing recyclable effluent, COD (chemical oxygen demand) of the effluent is less than or equal to 300, and the PH value of the effluent is equal to 7.
2. A process according to claim 1 for the treatment of cleaning effluents, wherein: the DTRO membrane system comprises a power pump and a working liquid level, wherein after liquid in the DTRO membrane system reaches the working liquid level, the power pump is started, and the DTRO membrane system starts to work.
3. A process according to claim 1 for the treatment of cleaning effluents, wherein: the DTRO membrane system comprises a low liquid level and a high liquid level, and waste liquid is supplemented when the liquid reaches the low liquid level; and stopping replenishing the waste liquid when the liquid reaches a high liquid level.
4. A process according to claim 1 for the treatment of cleaning effluents, wherein: and in the DTRO membrane system, when the liquid production amount is abnormally reduced, the DTRO membrane system stops working and carries out membrane cleaning.
5. A process according to claim 1 for the treatment of cleaning effluents, wherein: when the DTRO membrane system is cleaned, the cleaning agent is acid liquor and/or alkali liquor.
6. A process according to claim 5 for the treatment of cleaning effluents, wherein: introducing clear water into the DTRO membrane system before acid washing and alkali washing; and introducing clear water into the DTRO membrane system before washing with alkali and then acid.
7. A process according to claim 1 for the treatment of cleaning effluents, wherein: and (3) carrying out ultraviolet disinfection on the liquid output from the DTRO membrane system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386463.1A CN111559815A (en) | 2020-05-09 | 2020-05-09 | Treatment process for cleaning waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386463.1A CN111559815A (en) | 2020-05-09 | 2020-05-09 | Treatment process for cleaning waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111559815A true CN111559815A (en) | 2020-08-21 |
Family
ID=72072026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010386463.1A Pending CN111559815A (en) | 2020-05-09 | 2020-05-09 | Treatment process for cleaning waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111559815A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311181A (en) * | 2010-07-07 | 2012-01-11 | 刘春喜 | Embrane method and acidifying combined treatment reuse cyanide barren solution technology and method |
| CN107721024A (en) * | 2017-11-23 | 2018-02-23 | 吉林新金尔科技有限公司 | A kind of dish tubular type membranous system for high concentration wastewater treatment |
| CN109224870A (en) * | 2018-11-19 | 2019-01-18 | 湖南军信环保股份有限公司 | A kind of nanofiltration, reverse osmosis membrane chemical cleaning method |
-
2020
- 2020-05-09 CN CN202010386463.1A patent/CN111559815A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311181A (en) * | 2010-07-07 | 2012-01-11 | 刘春喜 | Embrane method and acidifying combined treatment reuse cyanide barren solution technology and method |
| CN107721024A (en) * | 2017-11-23 | 2018-02-23 | 吉林新金尔科技有限公司 | A kind of dish tubular type membranous system for high concentration wastewater treatment |
| CN109224870A (en) * | 2018-11-19 | 2019-01-18 | 湖南军信环保股份有限公司 | A kind of nanofiltration, reverse osmosis membrane chemical cleaning method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102674626B (en) | System and method for treatment and recovery of electronic electroplating wastewater | |
| CN107698112A (en) | A kind of advanced treatment method for carbonization wastewater and device | |
| CN206266392U (en) | A kind of papermaking wastewater zero-discharge treatment system | |
| CN104118956A (en) | Method for treating sewage | |
| CN113292178A (en) | Method for treating fabric washing sewage by combining air flotation flocculation with ozone advanced oxidation | |
| CN100400427C (en) | Process of treating and utilizing acid waste water containing heavy metal | |
| CN113754187A (en) | Advanced treatment and recycling process for wastewater of iron and steel enterprises | |
| US20040026326A1 (en) | Liquid treatment method and apparatus | |
| CN111115661B (en) | Nitric acid wastewater treatment system and method | |
| CN105693007B (en) | It is a kind of can be with the chemical engineering sewage advanced treatment system of deodorization | |
| CN207958039U (en) | A kind of pickle liquor Treatment and recovery utilizes device | |
| CN110642382A (en) | Anaerobic and aerobic composite biological treatment desalting method | |
| CN111559815A (en) | Treatment process for cleaning waste liquid | |
| CN212924728U (en) | Printing and dyeing wastewater pretreatment device | |
| WO2021223369A1 (en) | Chemical-free electric method combined treatment process system and method for circulating water of thermal power plant | |
| CN204490648U (en) | The complexes of a kind of electrolytic manganese ammonia nitrogen waste water process | |
| CN202808534U (en) | Electronic electroplating wastewater recycling system | |
| CN209619070U (en) | A kind of printing development waste liquid processing system | |
| CN209098386U (en) | A kind of circulating sewage processing system of garbage incinerating power plant | |
| CN207046985U (en) | A kind of nickel-containing waste water treatment for reuse system | |
| CN111151090A (en) | Comprehensive treatment method for waste water and waste gas | |
| CN111908741A (en) | Zero-discharge and resource utilization process for reverse osmosis high-salinity wastewater | |
| JPH11347595A (en) | Water purifying treatment equipment and concentration sludge thereof | |
| CN111533331A (en) | Filtering process for cleaning waste liquid | |
| CN208151163U (en) | A kind of rubber chemicals class high-concentration organic wastewater treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200821 |
|
| RJ01 | Rejection of invention patent application after publication |