CN208008616U - A kind of processing unit of phenol wastewater - Google Patents
A kind of processing unit of phenol wastewater Download PDFInfo
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- CN208008616U CN208008616U CN201820110734.9U CN201820110734U CN208008616U CN 208008616 U CN208008616 U CN 208008616U CN 201820110734 U CN201820110734 U CN 201820110734U CN 208008616 U CN208008616 U CN 208008616U
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Abstract
The utility model discloses a kind of processing units of phenol wastewater, including the adjusting tank, aeration defoaming equipment, settling tank, the pH that set gradually adjust tank, heat exchanger, extraction equipment, medial launder and air-floating apparatus；Wastewater inlet pipe is connect after heat exchanger exchanges heat with adjusting tank import.Further, which further includes extractant dashpot, and interior cycle is formed with extraction equipment by pipeline and pump.Further, the extraction equipment is also associated with mixed liquor defecator, and mixed liquor defecator is also associated with back extraction taking equipment.The utility model is combined by kinds of processes such as water quality adjustment, aeration, extraction and air supportings, can effectively remove the phenol in waste water, and can be recycled to it.
Description
Technical field
The utility model belongs to field of waste water treatment, and in particular to a kind of processing unit of phenol wastewater.
Background technology
The source of phenol wastewater is very extensive, is produced essentially from coal chemical industry, pharmacy corporation, petrochemical industry and phenolic resin
Producer etc..Phenolic compound can make protein coagulating, to all toxic property of almost all creatures, be chronically exposed to high concentration steam
Down or the water that polluted by phenol is drunk, chronic accumulation can be caused to be poisoned, canceration, mutation and distortion effect are caused to human body, endangered
Greatly, it is one of the poisonous and harmful waste water that emphasis solution is classified as in national water pollution control.China《Integrated wastewater discharge standard》
Provide plant drainage Ben Fenhanliang <2.0mg/L, national grade one discharge standard are Ben Fenhanliang <0.5mg/L.Administer phenol wastewater
A most important approach be study aldehydes matter recovery process, to realize the recycling of resource.
More to the research of phenol wastewater both at home and abroad at present, processing method is varied, is generally divided into Physical, chemistry
Method, biochemical process etc..Physical is industrially to apply more treating method at present, and application is relatively broad, it has operation
Range is wide, and regeneration is easy, and the advantages of high treating effect, but also exists simultaneously complex process, big, the processing cost height of investment etc. and asks
Topic.
Invention content
The purpose of this utility model provides a kind of processing unit of phenol wastewater, using Complexation Extraction Technique, technical feasibility
And processing cost is low, is especially suitable for the processing of industry phenol wastewater.
In order to solve the above technical problems, technical solution used by the utility model is：A kind of processing dress of phenol wastewater
Set, including set gradually adjusting tank, aeration defoaming equipment, settling tank, pH adjust tank, heat exchanger, extraction equipment, medial launder and
Air-floating apparatus；Wastewater inlet pipe is connect after heat exchanger exchanges heat with adjusting tank import.
Further, which further includes extractant dashpot, and interior cycle is formed with extraction equipment by pipeline and pump.
Further, the extraction equipment is also associated with mixed liquor defecator, and mixed liquor defecator is also associated with back extraction
Taking equipment.
Further, the back extraction taking equipment is connected with alkali soluble liquid storage tank, and back extraction taking equipment is also connected by pipeline and valve
It is connected to extractant dashpot.
Further, which is additionally provided with reuse water collecting groove, and air-floating apparatus is connected to reuse water collecting groove, and recycle-water is received
Collection slot is connected to reuse water collecting groove by pipeline and pump and constitutes circulation line.
The device is the combination of physics and chemical treatment method, can carry out processing unit according to Phenol for Waste Water content
Increase and decrease, to handle the phenol wastewater of various various concentrations, process range is big, to ammonia nitrogen and aldehydes matter stronger removing
Ability.
Handled Phenol content >=1000mg/L omits extraction step as phenol content < 1000mg/L.
Directly water is adjusted, to be aerated laggard promoting the circulation of qi floating, you can reach preferable dephenolization effect.
Air-dissolving air-float is to take 40-50% to carry out molten gas, then not with other 50-60% inside total processing water
The part of molten gas mixes in flotation tank.Air-dissolving air-float is pneumatically supported one kind, utilizes water different solubility at various pressures
The water of characteristic, (or after processing) pending to all or part pressurize and aerating, increases the Underwater sound field of water, is passed through and adds
It crosses in the water of coagulant, is discharged in normal pressure, air is precipitated to form minute bubbles, is adhered on impurity wadding grain, causes wadding grain
Global density rises less than water, to make separation of solid and liquid.
The beneficial effects of the utility model：
It is combined, can effectively be removed in waste water by kinds of processes such as water quality adjustment, aeration, extraction and air supportings
Phenol, and it can be recycled.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model setting device.
Specific implementation mode
The utility model is further illustrated with reference to embodiment, but the range of the requires of the utility model protection not office
It is limited to the range of embodiment statement.
As shown in Figure 1, a kind of processing unit of phenol wastewater, including set gradually adjusting tank 1, aeration defoaming equipment 2,
Settling tank 3, pH adjust tank 4, heat exchanger 5, extraction equipment 6, medial launder 7, air-floating apparatus 8 and reuse water collecting groove 9；Influent waste water
Pipe is connect after the heat exchange of heat exchanger 5 with adjusting 1 import of tank.
Preferably, which further includes extractant dashpot 10, and interior cycle is formed with extraction equipment by pipeline and pump.
Preferably, the extraction equipment 6 is also associated with mixed liquor defecator 11, and mixed liquor defecator 11 is also associated with instead
Extraction equipment 12.
Further, the back extraction taking equipment is connected with alkali soluble liquid storage tank, and back extraction taking equipment is also connected by pipeline and valve
It is connected to extractant dashpot.
Further, which is additionally provided with reuse water collecting groove 9, and air-floating apparatus is connected to reuse water collecting groove, recycle-water
Collecting tank is connected to reuse water collecting groove by pipeline and pump and constitutes circulation line.
When specific water process, test basis following below scheme carries out：
Waste water adjusting-aeration-precipitation-pH adjustings-N-503 extraction and recoveries-air supporting-water outlet
Waste water gravity flow enters water quality adjustment tank, stops after 2.5h from aerator is flowed into, and stops 5h, while strong aeration, vapour
Water is than 25：1, a large amount of foam, thickness about 1.0m are generated in aeration process.Water outlet carries out mud-water separation after precipitating 1h.Aeration
Waste water afterwards carries out pH and is adjusted to acid pH 4~5, and 31% 4~6 liters of concentrated hydrochloric acid is added per cubic meter of water.
The boosted pump of waste water enters extraction tank after adjusting, and water is the 2/3 of extraction tank volume, is then added to waste water
Heat is heated to 50 DEG C, according to water and extractant ratio 1.5~2：1 ratio adds N-503 extractants (10%N-503+90%
0# diesel oil) mixing, blender is started, two media is stirred, brings it about extraction reaction, and in experiment using dirty
Water pump carries out interior cycle to extract liquor, and strengthening extraction effect extracts mixing and mix after extraction reaction is carried out continuously 3~5h of extraction
Conjunction liquid carries out precipitation separation, and the sedimentation time is not less than 8 hours, and the extractant and water in mixed liquor carry out certainly because density is different
So layering, lower part are the high-concentration waste waters after dephenolize, and top is the extract liquor containing phenol, and extract liquor is by adding alkali to be stripped.
In being stripped tank, it is put into 1/2 strong lye, a concentration of 20%~25%, gradually by the extract liquor containing phenol later
It is added in buck, due to the variation of soda acid in waste water, when concentration of lye is reduced to 5%~8%, back extraction process is completed.
It is detached after 2~3h of precipitation, top, which is extractant, can continue reuse, and lower part is sodium phenolate, to further extract phenol, also
Thick creosote is obtained after needing enriching sulfuric acid to be acidified.
Waste water after extraction, into air supporting into water pot, but oil content is higher, can not carry out air supporting, add acid again, carries out
Demulsification, makes water-oil separating.Add 31% concentrated hydrochloric acid 3.75L per cubic meter of water, so that pH is adjusted to 2~3 from 4~5, realize the thorough of grease
Separation.Waste water after oil removing adds alkali, pH to be adjusted to 8~9, and caustic dosage is that 2~2.5 ㎏ of industrial soda (is configured, caustic dosage by concentration 10%
For 20L~25L).In order to ensure air-float purification effect, it is also necessary to further be adjusted to water quality, need, according to water quality difference, to add
Aluminium polychloride (PAC) and polyacrylamide (PAM) flocculant, the former dosage are 100 ㎎/L~150 ㎎/L, the latter's dosing
Measure 10 ㎎/L~20 ㎎/L.Micro bubble generation device, bubble diameter is used to be not more than 50 μ/m in air supporting, molten carbonated drink ratio is place
Manage the 40%~50% of water.When air-floating apparatus is run, there are a large amount of drosses to generate, yellow when dross is by just intaking gradually becomes
Rufous makes coloration and SS in water have and substantially takes on a new look, coloration becomes thin tea from brownish red by the processing of air-floating apparatus
Color.Water after from raw water to air supporting shows dark red muddiness in appearance all without significant change, and after oxidant decoloration is added, water becomes
Clarification.
The water of different phase in processing procedure is detected, the results are shown in Table 1.
Table 1
| Title | pH | Ammonia nitrogen (mg/L) | Phenol (mg/L) |
| Raw water | 9 | 1487.1 | 1569.2 |
| After aeration | 8.72 | 1420.5 | 1217.5 |
| After extraction | 6.47 | 1044.2 | 241.5 |
| After air supporting | 6.72 | 214.2 | 26.9 |
Claims (5)
1. a kind of processing unit of phenol wastewater, it is characterised in that：Including the adjusting tank set gradually（1）, aeration defoaming equipment
（2）, settling tank（3）, pH adjust tank（4）, heat exchanger（5）, extraction equipment（6）, medial launder（7）And air-floating apparatus（8）；Waste water into
Water pipe is through heat exchanger（5）After heat exchange with adjust tank（1）Import connects.
2. the apparatus according to claim 1, it is characterised in that：The device further includes extractant dashpot（10）, pass through
Pipeline and pump form interior cycle with extraction equipment.
3. the apparatus according to claim 1, it is characterised in that：The extraction equipment（6）It is also associated with mixed liquor clarification
Slot（11）, mixed liquor defecator（11）It is also associated with back extraction taking equipment（12）.
4. device according to claim 3, it is characterised in that：The back extraction taking equipment is connected with alkali soluble liquid storage tank, back extraction
Taking equipment is also connected to extractant dashpot by pipeline and valve.
5. the apparatus of claim 2, it is characterised in that：The device is additionally provided with reuse water collecting groove（9）, air-floating apparatus
（8）It is connected to reuse water collecting groove, reuse water collecting groove is connected to reuse water collecting groove by pipeline and pump and constitutes circulation line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820110734.9U CN208008616U (en) | 2018-01-23 | 2018-01-23 | A kind of processing unit of phenol wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820110734.9U CN208008616U (en) | 2018-01-23 | 2018-01-23 | A kind of processing unit of phenol wastewater |
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| Publication Number | Publication Date |
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| CN208008616U true CN208008616U (en) | 2018-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820110734.9U Active CN208008616U (en) | 2018-01-23 | 2018-01-23 | A kind of processing unit of phenol wastewater |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128949A (en) * | 2018-01-23 | 2018-06-08 | 湖北三峡职业技术学院 | The treatment process and device of a kind of phenol wastewater |
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2018
- 2018-01-23 CN CN201820110734.9U patent/CN208008616U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128949A (en) * | 2018-01-23 | 2018-06-08 | 湖北三峡职业技术学院 | The treatment process and device of a kind of phenol wastewater |
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