CN203781948U - Treatment device of EDTA cleaning waste liquid - Google Patents
Treatment device of EDTA cleaning waste liquid Download PDFInfo
- Publication number
- CN203781948U CN203781948U CN201420115539.7U CN201420115539U CN203781948U CN 203781948 U CN203781948 U CN 203781948U CN 201420115539 U CN201420115539 U CN 201420115539U CN 203781948 U CN203781948 U CN 203781948U
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- Prior art keywords
- edta
- tank
- clear liquid
- waste liquid
- crystallizer
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- Expired - Fee Related
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Abstract
The utility model discloses a treatment device of EDTA cleaning waste liquid. The treatment device comprises an EDTA recycling device and a decolouring device, wherein the EDTA recycling device comprises an alkali dosing tank, a first metering pump, a coagulating tank, a first pressure pump, an acid dosing tank, a second metering pump, a crystallizing tank and an EDTA storage tank; a sewage draining hole is arranged at the lower part of the coagulating tank; clear liquid in the coagulating tank is transmitted to the crystallizing tank through the first pressure pump; a mechanical stirrer is arranged in the crystallizing tank; a material outlet communicated with the inlet of the EDTA storage tank is arranged at the bottom of the crystallizing tank; a valve is arranged on a communication pipeline; the decolouring device comprises a decolourizer and a clear liquid storage tank; clear liquid in the crystallizing tank is transmitted to the decolourizer through the second pressure pump; a clear liquid outlet connected with the clear liquid storage tank is arranged at the bottom of the decolourizer. After the EDTA clearing waste liquid is treated through the treatment device disclosed by the utility model, the finally obtained clear liquid is mixed with recycled EDTA crystals, a proper additive is added, and then the obtained mixture can be reused for cleaning a boiler; reutilization of resources is realized.
Description
Technical field
The utility model belongs to field of waste water treatment, is specifically related to the treatment unit that a kind of EDTA cleans waste liquid.
Background technology
EDTA cleans waste liquid and is mainly derived from by EDETATE DISODIUM or ammonium salt boiler rinsing system, EDTA concentration is wherein larger, COD value is up to 40000 ~ 60000mg/L, and metal ion content is higher, color is partially dark, directly entering water body can greatly affect existence biological in water body, therefore, before discharge, must process accordingly.
The method that conventional process EDTA cleans waste liquid is to adopt activated sludge process, chemical oxidization method etc. to carry out degradation treatment to it, and the COD value that EDTA is cleaned to waste liquid drops to national standard and discharges below.The subject matter of the method is to be difficult to realize industrialization, because the COD value of waste liquid is very high, degraded difficulty is very large, and processing cost is too high, and metal ion wherein still do not reach emission standard, and after degradation treatment, the colourity of waste liquid is still larger.Therefore, develop and be a kind ofly applicable to process EDTA to clean the device of waste liquid very necessary.
Summary of the invention
Problem to be solved in the utility model is the deficiency existing for prior art, provides a kind of and can effectively process the device that EDTA cleans waste liquid.
In order to achieve the above object, technical scheme used is as follows.
EDTA cleans a treatment unit for waste liquid, comprises EDTA retrieving arrangement and waste liquid decoloration device two portions.Described EDTA retrieving arrangement is by alkali grug feeding jar, the first volume pump, coagulation basin, the first power-driven pump, sour grug feeding jar, the second volume pump, crystallizer, EDTA storage pool forms, alkali lye enters coagulation basin via the first volume pump from alkali grug feeding jar, coagulation basin bottom is provided with sewage draining exit, clear liquid in coagulation basin is transferred to crystallizer by the first pressure pump, acid solution enters crystallizer via the second volume pump from sour grug feeding jar, in crystallizer, be provided with mechanical stirrer, the bottom of crystallizer is provided with the material outlet being connected with the import of EDTA storage pool, and connecting pipe is provided with valve.
Described waste liquid decoloration device consists of decolorizer, clear liquid storage pool, and the clear liquid in crystallizer is transferred to decolorizer by the second power-driven pump, and decolorizer bottom is provided with the purified liquor outlet being connected with clear liquid storage pool.
Described decolorizer upper part is activating fly ash adsorbent layer, and lower part is super-cell layer, in the middle of adsorbent layer and flocculating aids layer, is filter layer of cloth.
Compared with prior art, the utility model adopts Chemical Pretreatment and physical adsorption device to clean waste liquid to EDTA and processes, the EDTA crystal that the clear liquid of final gained and recovery obtain fully mixes, add again suitable additive, can, once again for cleaning boiler, realize the recycling of resource; And the waste that adsorbent activity flyash used is boiler combustion, with low cost.The utility model is applicable to batch processing EDTA and cleans waste liquid, is easy to realize industrialization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein each Arabic numerals are represented as: 1 coagulation basin; 2 sewage draining exits; 3 first volume pumps; 4 alkali grug feeding jars; 5 first pressure pumps; 6 sour grug feeding jars; 7 second volume pumps; 8 mechanical stirrers; 9 crystallizing ponds; 10 valves; 11 EDTA storage pools; 12 second pressure pumps; 13 decolorizers; 14 clear liquid storage pools
.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The EDTA filling in coagulation basin 1 from cleaning boiler cleans waste liquid, alkali lye in alkali grug feeding jar 4 enters coagulation basin via the first volume pump 3, metal ion and alkali effect generation that EDTA cleans in waste liquid are deposited in coagulation basin bottom deposition, the supernatant liquid obtaining enters crystallizing pond 9 via the first pressure pump 5, and precipitation is discharged by sewage draining exit 2.Acid solution in acid grug feeding jar 6 enters in crystallizer via the second volume pump 7, opening mechanical stirrer 8 stirs, variation due to pH value, from the EDTA meeting crystallization in the clear liquid of coagulation basin, be deposited on the bottom of crystallizer, supernatant liquid enters in decolorizer 13 via the second pressure pump 12, Open valve 10, and the EDTA crystal of deposition enters EDTA storage pool 11.Supernatant liquid from crystallizer enters in decolorizer, through the effect of activating fly ash sorbent material, has removed the organism that wherein contains the group that develops the color, and the flocculating aids layer of flowing through finally obtains colourlessly, and the clear liquid of low COD value, enters clear liquid storage pool 14.The final clear liquid obtaining fully dissolves with the EDTA that recovery obtains, and adds suitable additive, can realize making full use of of resource once again for cleaning boiler, turns waste into wealth.
Claims (2)
1. an EDTA cleans the treatment unit of waste liquid, it is characterized in that, described treatment unit comprises EDTA retrieving arrangement and waste liquid decoloration device, wherein EDTA retrieving arrangement is by alkali grug feeding jar, the first volume pump, coagulation basin, the first pressure pump, acid grug feeding jar, the second volume pump, crystallizer, EDTA storage pool forms, alkali lye enters coagulation basin via the first volume pump from alkali grug feeding jar, coagulation basin bottom is provided with sewage draining exit, clear liquid in coagulation basin is transferred to crystallizer by the first pressure pump, acid solution enters crystallizer via the second volume pump from sour grug feeding jar, in crystallizer, be provided with mechanical stirrer, the bottom of crystallizer is provided with the material outlet being connected with the import of EDTA storage pool, connecting pipe is provided with valve, waste liquid decoloration device consists of decolorizer, clear liquid storage pool, and the clear liquid in described crystallizer is transferred to decolorizer by the second power-driven pump, and decolorizer bottom is provided with the purified liquor outlet being connected with clear liquid storage pool.
2. waste liquid decoloration device as claimed in claim 1, is characterized in that, decolorizer upper part is activating fly ash adsorbent layer, and lower part is super-cell layer, in the middle of adsorbent layer and flocculating aids layer, is filter layer of cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420115539.7U CN203781948U (en) | 2014-03-14 | 2014-03-14 | Treatment device of EDTA cleaning waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420115539.7U CN203781948U (en) | 2014-03-14 | 2014-03-14 | Treatment device of EDTA cleaning waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203781948U true CN203781948U (en) | 2014-08-20 |
Family
ID=51318155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420115539.7U Expired - Fee Related CN203781948U (en) | 2014-03-14 | 2014-03-14 | Treatment device of EDTA cleaning waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203781948U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445341A (en) * | 2017-08-29 | 2017-12-08 | 上海电力学院 | The integrated processing system and processing method of one kind of multiple power plant's cleaning waste water |
| CN114062661A (en) * | 2020-07-30 | 2022-02-18 | 深圳市帝迈生物技术有限公司 | Sample analyzer, sampling needle cleaning liquid path and cleaning method thereof |
-
2014
- 2014-03-14 CN CN201420115539.7U patent/CN203781948U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445341A (en) * | 2017-08-29 | 2017-12-08 | 上海电力学院 | The integrated processing system and processing method of one kind of multiple power plant's cleaning waste water |
| CN107445341B (en) * | 2017-08-29 | 2019-10-18 | 上海电力学院 | The integrated processing system and processing method of one kind of multiple power plant's cleaning waste water |
| CN114062661A (en) * | 2020-07-30 | 2022-02-18 | 深圳市帝迈生物技术有限公司 | Sample analyzer, sampling needle cleaning liquid path and cleaning method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20150314 |
|
| EXPY | Termination of patent right or utility model |