CN109179648A - A kind of coal chemical industry oil product synthetic wastewater oil removing process and its special equipment - Google Patents
A kind of coal chemical industry oil product synthetic wastewater oil removing process and its special equipment Download PDFInfo
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- CN109179648A CN109179648A CN201811086814.6A CN201811086814A CN109179648A CN 109179648 A CN109179648 A CN 109179648A CN 201811086814 A CN201811086814 A CN 201811086814A CN 109179648 A CN109179648 A CN 109179648A
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- sludge
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- reaction
- synthetic wastewater
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- 239000002351 wastewater Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000126 substance Substances 0.000 title claims abstract description 31
- 239000003245 coal Substances 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 29
- 239000010802 sludge Substances 0.000 claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 238000010521 absorption reaction Methods 0.000 claims abstract description 33
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims description 25
- 238000010992 reflux Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 abstract description 4
- 238000005238 degreasing Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 47
- 238000005516 engineering process Methods 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 241000589651 Zoogloea Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a kind of coal chemical industry oil product synthetic wastewater oil removing process and its special equipment, which handles coal chemical industry oil product synthetic wastewater by processes such as hybrid reaction, sludge absorption reaction, mud-water separation and anaerobism.Hybrid reaction is carried out by adding suitable activated sludge, without adding alkali to adjust the pH value of waste water, subsequently into coming into full contact with reaction in sludge absorption reactor.When waste water oil content is 200~400mg/L, it can be achieved that the removal rate of oil content is up to 80%~90% in oil product synthetic wastewater.The technique not only solves existing degreasing technique low efficiency and the high problem of operating cost, further improves the biodegradability of waste water.
Description
Technical field
The invention belongs to coal chemical industry technical field of waste water processing, and in particular to a kind of coal chemical industry oil product synthetic wastewater removes
Oily technique and its special equipment.
Background technique
Currently, the pH value of waste water is mainly adjusted by adding piece alkali in coal chemical industry oil product synthetic wastewater treatment process,
Subsequently into being handled in dealcoholization device and degreasing unit, pretreated waste water is directly entered anaerobism conditioning tank and carries out depth
Processing.Wherein, the dosage of piece alkali is up to tens gram per liters, is a major reason for causing high operating cost.And oil removing fills
It sets substantially using gravity and mechanical phonograph recorder separation and gas floatation process.
About coal chemical industry oil product synthetic wastewater treatment process, Chinese patent CN103880242A discloses coal chemical industry depth
Heavy oil is deposited to bottom of pond portion, and sent to oil storage tank by pumping under the effect of gravity by the oil removing pretreating process in science and engineering skill,
Oils removal rate is up to 80~95%.But used machinery equipment volume is bigger, and operational paradigm is relatively low, expend the time and
Resource is relatively high.
Chinese patent CN104478173A discloses a kind of coal chemical industry enterprises wastewater treatment and recycling integrated treatment process,
Wherein oil removing process section takes oil partiting precipitation pool and gas floatation process.Wherein the shortcomings that oil partiting precipitation pool, is similar with above-mentioned patent, equally
There is a problem of that operational paradigm is low, expend the time and resource is relatively high.Used gas floatation process is relatively suitble to oil density to be less than
0.94 oily waste water, and be greater than containing big metric density 1 heavy tar in coal chemical industrial waste water, dust in such waste water, again
Matter tar and tar light oil can be mixed with bubble, be cannot achieve three-phase and efficiently separated.It is waved in addition, coal chemical industrial waste water contains
The toxic contaminants substances such as phenol, ammonia are sent out, evolution is easily carried secretly through gas floatation process, makes a very bad impression to execute-in-place environment.
It follows that there are various problems on coal chemical industry oil product synthetic wastewater oil removing process at present, including use investment
Greatly, operational efficiency is low, expend the time and resource is high and makes a very bad impression to environment, needs to develop a kind of oil removal efficiency
Technique high, operating cost is low promotes the development of coal chemical industrial waste water the relevant technologies.
Summary of the invention
The purpose of the present invention is in above-mentioned existing coal chemical industry oil product synthetic wastewater oil removing process, oil pollutant is removed
Rate is lower, the higher problem of operating cost.It on the one hand is the pH value that waste water is improved by the basicity of activated sludge, reduction system adds
Alkali number expends time and operating cost；On the other hand the oils in zoogloea absorption and the waste water that flocculates formed using microorganism
Pollutant realizes the removal of oil content in synthetic wastewater, meets anaerobism flow condition, and the treatment of wastes with processes of wastes against one another further improves waste water
Biodegradability.Whole device increases substantially oil removal efficiency, reduces the operating cost of pretreatment oil removing, improves oil product conjunction
At the biodegradability of waste water, the stable operation of subsequent processing units ensure that.
In order to achieve the above technical purposes, a kind of coal chemical industry oil product synthetic wastewater oil removing process provided by the invention, it is special
Sign is, it including the following steps:
(1) the oil product synthetic wastewater and activated sludge that generate during coal chemical industry are subjected to sufficient hybrid reaction, guaranteed
Contact completely, obtains mixed liquor after hybrid reaction；
(2) mixed liquor in step (1) is subjected to adsorption reaction, removes the oil content in mixed liquor, obtain absorption water outlet；
(3) absorption water outlet obtained in step (2) is subjected to mud-water separation, obtains supernatant and activated sludge；
(4) by activity sludge reflux obtained in step (3), guarantee effluent quality.
Further, in the step (1) during hybrid reaction, mixed reaction time is 30 minutes, makes waste water and activity
Sludge comes into full contact with, and reaction temperature is 20~50 DEG C, and pH value is 5~8.
Further, the sorption reaction time in the step (2) is 1~2 hour, removes the oil content in mixed liquor
It removes, reaction temperature is 20~50 DEG C, and pH value is 5~8.
Further, when the oil content of absorption water outlet rises in the step (3), activity sludge reflux ratio is improved, to guarantee
Sludge concentration improves deoiling effect.
The special equipment of above-mentioned coal chemical industry oil product synthetic wastewater oil removing process, it is characterised in that: it include mixed reaction pond,
Sludge absorption reactor, mud and water separating equipment, anaerobism intake pool, former pond, raw water pump, sludge reflux pump, excess sludge spoil disposal
Pump, the first blender, the second blender, partition one, partition two and Treatment of Sludge station；
The former pond is connect with mixed reaction pond, and raw water pump, the water outlet of the mixed reaction pond are housed on connecting line
Mouth is connect with the input terminal of sludge absorption reactor, and the water outlet and the mud and water separating equipment of the sludge absorption reactor are defeated
Enter end connection, the water outlet of the mud and water separating equipment is connect with the anaerobism intake pool input terminal, the mud and water separating equipment
It connect with mixed reaction pond and Treatment of Sludge station at the spoil disposal of bottom, is mixed at the spoil disposal of the mud and water separating equipment bottom with described respectively
It closes and sludge reflux pump is housed on reaction tank connecting line, by sludge reflux to mixed reaction pond, the mud and water separating equipment bottom
Excess sludge sludge pump is housed on the connecting line of Treatment of Sludge station at spoil disposal, excess sludge is drained into Treatment of Sludge station.
Further, it is equipped with partition one in the mixed reaction pond, mixed reaction pond is divided into cell compartment one and cell compartment two, it is described
Cell compartment one is muddy water mixed zone, and the cell compartment two is muddy water mixed solution gravity flow area after mixing, wherein in the cell compartment one
Equipped with the first blender.
Further, it is equipped with block partition two in the sludge absorption reactor, sludge absorption reactor is divided into cell compartment three
With cell compartment four, the cell compartment three is sludge absorption reaction zone, and the cell compartment four is absorption water outlet gravity flow area；Wherein, the cell compartment
The second blender is equipped in three.
Further, the mud and water separating equipment uses membrane bioreactor MBR or sedimentation basin.
Beneficial effect
The present invention is by the way that in the hybrid reaction stage, using high mechanization stirring action keeps oil product synthetic wastewater and activity dirty
Mud adequately mixes, while the basicity of sludge can effectively improve the pH value of waste water, reduce oil content, then pass through sludge absorption
Stage makes the adsorption reaction of sludge and waste water, further decreases the oil content in oil product synthetic wastewater, and then water outlet carries out muddy water
Separation obtains producing water and activated sludge.Wherein, activity sludge reflux is to mixed reaction pond, with higher sludge in maintenance system
Concentration, to improve oil removal efficiency.Effectively removing for the oil content in oil product synthetic wastewater not only may be implemented by this technique,
It is provided safeguard for subsequent reaction member, also as save the consumption of a large amount of medicaments.
Detailed description of the invention
Attached drawing 1 is the process flow chart of the embodiment of the present invention.
Attached drawing 2 is the equipment of the embodiment of the present invention connection relationship diagram.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
As shown in Fig. 2, a kind of special equipment of coal chemical industry oil product synthetic wastewater oil removing process, it includes mixed reaction pond
1, sludge absorption reactor 2, mud and water separating equipment 3, anaerobism intake pool 4, former pond 5, raw water pump 6, sludge reflux pump 7, residue
Sludge sludge pump 8, the first blender 9, the second blender 10, partition 1, partition 2 12 and Treatment of Sludge station 13；
The former pond 5 is connect with mixed reaction pond 1, and raw water pump 6 is housed on connecting line, the mixed reaction pond 1
Water outlet is connect with the input terminal of sludge absorption reactor 2, the water outlet of the sludge absorption reactor 2 and the mud-water separation
The connection of 3 input terminal of equipment, the water outlet of the mud and water separating equipment 3 are connect with 4 input terminal of anaerobism intake pool, the muddy water
It is connect respectively with mixed reaction pond 1 and Treatment of Sludge station 13 at 3 bottom spoil disposal of separation equipment, 3 bottom of mud and water separating equipment
Sludge reflux pump 7 is housed at spoil disposal and on 1 connecting line of mixed reaction pond, it is described by sludge reflux to mixed reaction pond 1
Excess sludge sludge pump 8 is housed on 13 connecting line of Treatment of Sludge station at 3 bottom spoil disposal of mud and water separating equipment, excess sludge is arranged
To Treatment of Sludge station 13.
It is equipped with partition 1 in the mixed reaction pond 1, mixed reaction pond 1 is divided for two 11b of one 11a of cell compartment and cell compartment,
One 11a of cell compartment is muddy water mixed zone, and two 11b of cell compartment is muddy water mixed solution gravity flow area after mixing, wherein institute
It states and is equipped with the first blender 9 in one 11a of cell compartment.
It is equipped with block partition 2 12 in the sludge absorption reactor 2, sludge absorption reactor 2 is divided for three 12a of cell compartment
It is sludge absorption reaction zone with four 12b of cell compartment, three 12a of cell compartment, four 12b of cell compartment is absorption water outlet gravity flow area；Wherein,
The second blender 10 is equipped in three 12a of cell compartment.
The mud and water separating equipment 3 uses membrane bioreactor MBR or sedimentation basin.
As shown in Fig. 1, the oil removing process for carrying out coal chemical industry oil product synthetic wastewater using above-mentioned special equipment is as follows:
The first step, by the oil product synthetic wastewater and activated sludge that are generated during coal chemical industry be placed in mixed reaction pond 1 into
The sufficient hybrid reaction of row, mixed reaction time are 30 minutes, it is ensured that waste water and activated sludge come into full contact with, and reaction temperature is
20~50 DEG C, pH is 5~8.
Mixed liquor in the first step is carried out adsorption reaction, it is ensured that in waste water by second step in sludge absorption reactor 2
Oil content is removed；Sorption reaction time is 1~2 hour, and reaction temperature is 20~50 DEG C, and pH is 5~8.
The water outlet of sludge absorption obtained in second step is carried out in mud and water separating equipment 3 mud-water separation, obtained by third step
Supernatant and activated sludge；
4th step when rising the oil content being discharged in third step, improves activity sludge reflux ratio, to guarantee that sludge is dense
Degree improves deoiling effect, is conducive to activated sludge recycling, guarantees effluent quality.
Structure depicted in this specification institute accompanying drawings of the embodiment of the present invention, ratio, size, quantity etc., only to cooperate specification
Revealed content is not intended to limit the invention enforceable restriction item so that those skilled in the art understands and reads
Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing
Under the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain and can contain
In the range of lid.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre ", " clockwise ", " inverse time in this specification
The term of needle " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Claims (8)
1. a kind of coal chemical industry oil product synthetic wastewater oil removing process, which is characterized in that it including the following steps:
(1) the oil product synthetic wastewater and activated sludge that generate during coal chemical industry are subjected to sufficient hybrid reaction, guarantee contact
Completely, mixed liquor is obtained after hybrid reaction；
(2) mixed liquor in step (1) is subjected to adsorption reaction, removes the oil content in mixed liquor, obtain absorption water outlet；
(3) absorption water outlet obtained in step (2) is subjected to mud-water separation, obtains supernatant and activated sludge；
(4) by activity sludge reflux obtained in step (3), guarantee effluent quality.
2. a kind of coal chemical industry oil product synthetic wastewater oil removing process as described in claim 1, it is characterised in that:
The reaction time of hybrid reaction process is 30 minutes in the step (1), comes into full contact with waste water and activated sludge, is reacted
Temperature is 20~50 DEG C, and pH value is 5~8.
3. a kind of coal chemical industry oil product synthetic wastewater oil removing process as described in claim 1, it is characterised in that:
Sorption reaction time in the step (2) is 1~2 hour, removes the oil content in mixed liquor, reaction temperature
It is 20~50 DEG C, pH value is 5~8.
4. a kind of coal chemical industry oil product synthetic wastewater oil removing process as described in claim 1, it is characterised in that:
When the oil content of absorption water outlet rises in the step (3), improves activity sludge reflux ratio and mentioned with guaranteeing sludge concentration
High deoiling effect.
5. coal chemical industry oil product synthetic wastewater oil removing process is dedicated described in any one of the claims 1~4 claim
Equipment, it is characterised in that: it include mixed reaction pond (1), sludge absorption reactor (2), mud and water separating equipment (3), anaerobism into
Pond (4), former pond (5), raw water pump (6), sludge reflux pump (7), excess sludge sludge pump (8), the first blender (9),
Two blenders (10), partition one (11), partition two (12) and Treatment of Sludge station (13)；
The former pond (5) connect with mixed reaction pond (1), raw water pump (6) is housed on connecting line, the mixed reaction pond
(1) water outlet is connect with the input terminal of sludge absorption reactor (2), the water outlet of the sludge absorption reactor (2) and institute
The connection of mud and water separating equipment (3) input terminal is stated, the water outlet of the mud and water separating equipment (3) and the anaerobism intake pool (4) are defeated
Enter end connection, connects respectively with mixed reaction pond (1) and Treatment of Sludge station (13) at the spoil disposal of mud and water separating equipment (3) bottom
It connects, sludge reflux pump is housed at the spoil disposal of mud and water separating equipment (3) bottom and on the mixed reaction pond (1) connecting line
(7), by sludge reflux to mixed reaction pond (1), Treatment of Sludge station (13) connection at the spoil disposal of mud and water separating equipment (3) bottom
Excess sludge sludge pump (8) are housed on pipeline, excess sludge is drained into Treatment of Sludge station (13).
6. the special equipment of coal chemical industry oil product synthetic wastewater oil removing process as claimed in claim 5, it is characterised in that: described mixed
It closes and is equipped with partition one (11) in reaction tank (1), mixed reaction pond (1) is divided into cell compartment one (11a) and cell compartment two (11b), it is described
Cell compartment one (11a) is muddy water mixed zone, and the cell compartment two (11b) is muddy water mixed solution gravity flow area after mixing, wherein institute
It states in cell compartment one (11a) and is equipped with the first blender (9).
7. the special equipment of coal chemical industry oil product synthetic wastewater oil removing process as claimed in claim 5, it is characterised in that: described
It is equipped with block partition two (12) in sludge absorption reactor (2), sludge absorption reactor (2) is divided into cell compartment three (12a) and cell compartment
Four (12b), the cell compartment three (12a) are sludge absorption reaction zone, and the cell compartment four (12b) is absorption water outlet gravity flow area；Wherein,
The second blender (10) are equipped in the cell compartment three (12a).
8. the special equipment of coal chemical industry oil product synthetic wastewater oil removing process as claimed in claim 5, it is characterised in that: described
Mud and water separating equipment (3) uses membrane bioreactor MBR or sedimentation basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811086814.6A CN109179648A (en) | 2018-09-18 | 2018-09-18 | A kind of coal chemical industry oil product synthetic wastewater oil removing process and its special equipment |
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| CN201811086814.6A CN109179648A (en) | 2018-09-18 | 2018-09-18 | A kind of coal chemical industry oil product synthetic wastewater oil removing process and its special equipment |
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Cited By (2)
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| CN116253479A (en) * | 2023-05-15 | 2023-06-13 | 山东凤鸣桓宇环保有限公司 | Treatment method of lubricating oil-containing regeneration wastewater |
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| CN116253479A (en) * | 2023-05-15 | 2023-06-13 | 山东凤鸣桓宇环保有限公司 | Treatment method of lubricating oil-containing regeneration wastewater |
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Application publication date: 20190111 |