CN211664904U - Coking phenol cyanogen waste water intensive treatment system - Google Patents
Coking phenol cyanogen waste water intensive treatment system Download PDFInfo
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- CN211664904U CN211664904U CN201921916868.0U CN201921916868U CN211664904U CN 211664904 U CN211664904 U CN 211664904U CN 201921916868 U CN201921916868 U CN 201921916868U CN 211664904 U CN211664904 U CN 211664904U
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Abstract
The utility model provides a coking phenol cyanogen waste water intensive treatment system, includes biochemical treatment system, advanced treatment system and intermediate processing system, the delivery port of biochemical treatment system and the water inlet intercommunication of intermediate processing system, the delivery port of intermediate processing system and the water inlet intercommunication of advanced treatment system, intermediate processing system is used for handling suspended solid, colloidal substance that carry in the biochemical treatment system effluent and benzene ring class, the alkane class pollutant that are difficult to degrade among the biochemical treatment to carry out further for advanced treatment system and handle with the waste water after handling. The utility model discloses carry out the processing once earlier with benzene ring class, the alkane class polluting substances that are difficult to degrade among the suspended solid, the colloidal substance that carry in the waste water after the biochemical treatment system handles and the biochemical treatment, later get into the advanced treatment system processing again, provide good operational environment for the operation of advanced treatment system ultrafiltration, reverse osmosis membrane, improve the rate of recovery, the life of membrane.
Description
Technical Field
The utility model relates to a high concentration organic waste water comprehensive treatment field, concretely relates to coking phenol cyanogen waste water intensive treatment system.
Background
The coking phenol-cyanogen wastewater is high-concentration organic wastewater with complex pollutant types generated in the production processes of coke production, gas purification, tar refining, crude benzene refining and the like, and mainly comprises phenolic compounds, cyanides, thiocyanates, amine compounds, polycyclic aromatic hydrocarbon compounds and the like, however, the complexity of the coking phenol-cyanogen wastewater is influenced by the coal blending level, a coke oven, a chemical process and the like, so the coking phenol-cyanogen wastewater becomes a worldwide problem of industrial water treatment and becomes a research hotspot of domestic and foreign industrial wastewater treatment. Although the coking wastewater can be treated by combining a biochemical treatment system with an advanced treatment system, the national requirements on the environment are increasingly strict along with the progress and development of the society, the coking wastewater is regarded as intractable industrial wastewater acknowledged in the world and is more emphasized by the national ministry of environmental protection, and a coking chemical industry pollutant discharge standard (GB 16171-2012) is established in 2012, wherein the standard clearly defines the direct discharge and indirect discharge of the coking wastewater, but the coking wastewater cannot reach a new discharge standard due to the characteristic of unstable water quality, so that the accident of membrane treatment unit breakdown in the advanced treatment system occurs, and the treatment cost is increased. Therefore, the optimization of an enhanced advanced treatment technology for treating the coking phenol-cyanogen wastewater according to the characteristics of the coking wastewater and the existing coking wastewater treatment technology becomes the urgent priority of the coking phenol-cyanogen wastewater treatment at present.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a coking phenol cyanogen waste water intensive treatment system, concrete technical scheme is as follows:
the utility model provides a coking phenol cyanogen waste water intensive treatment system, includes biochemical treatment system and advanced treatment system, still includes and is used for handling the intermediate treatment system that suspended solid, colloidal substance and the benzene ring that is difficult to degrade among the biochemical treatment carried in biochemical treatment system's the play water, biochemical treatment system's delivery port and intermediate treatment system's water inlet communicate, intermediate treatment system's delivery port and advanced treatment system's water inlet communicate, intermediate treatment system is used for handling the suspended solid, colloidal substance and the benzene ring that is difficult to degrade among the biochemical treatment in the play water of biochemical treatment system, the alkane pollutant to carry out the advanced treatment system with the waste water after will handling and handle.
Further, the intermediate treatment system comprises a PAC contact mixing tank, a coagulation tank, a flocculation tank, an inclined tube sedimentation tank and a water outlet tank, wherein powdered activated carbon is added into the PAC contact mixing tank and is used for being in contact mixing with the outlet water of the biochemical treatment system, the water inlet of the PAC contact mixing tank is communicated with the water outlet of the biochemical treatment system, the water outlet of the PAC contact mixing tank is communicated with the water inlet of the coagulation tank, the water outlet of the coagulation tank is communicated with the water inlet of the flocculation tank, the water outlet of the flocculation tank is communicated with the water inlet of the inclined tube sedimentation tank, the water outlet of the inclined tube sedimentation tank is communicated with the water inlet of the water outlet tank, and the water outlet of the water outlet tank is communicated with.
Furthermore, the system also comprises a backwashing water recycling pump, wherein a water inlet of the backwashing water recycling pump is respectively communicated to the multi-media filter and the ultrafiltration system in the advanced treatment system through pipelines, and a water outlet of the backwashing water recycling pump is communicated to the PAC contact mixing tank through pipelines, so that backwashing water enters the PAC contact tank for treatment.
Further, the water inlet of the PAC contact mixing tank is communicated with the water outlet of a sedimentation separation tank of the biochemical treatment system.
Further, a first stirrer for stirring the powdered activated carbon added into the PAC contact mixing tank is arranged in the PAC contact mixing tank, and when the powdered activated carbon is added, the first stirrer is in a stirring state so as to ensure that the concentration of carbon slurry is unchanged and the adding amount is stable.
Further, a carbon slurry preparation device is arranged on the PAC contact mixing tank, an inlet of the carbon slurry preparation device is communicated with a feeding port of a powdered activated carbon feeding device of the PAC contact mixing tank, and an outlet of the carbon slurry preparation device is communicated to the PAC contact mixing tank for preparing the powdered activated carbon fed by the powdered activated carbon feeding device into carbon slurry and then feeding the carbon slurry into the PAC contact mixing tank
Furthermore, a second stirrer for stirring the coagulant put into the coagulation tank is arranged in the coagulation tank.
Further, the coagulant is one or more of industrial-grade polymeric ferric sulfate, polymeric aluminum chloride, polymeric aluminum sulfate and polyacrylamide.
Further, a third stirrer for stirring the flocculating agent put into the flocculation tank is arranged in the flocculation tank.
Further, a slurry pump is arranged at the bottom of the inclined tube sedimentation tank, and a water outlet of the slurry pump is communicated into the biochemical treatment system through a pipeline so as to send the sludge at the bottom of the inclined tube sedimentation tank back to the biochemical treatment system for cyclic utilization.
Furthermore, a circulating pump is arranged at the bottom of the inclined tube sedimentation tank, and a water outlet of the circulating pump is communicated into the PAC contact mixing tank through a pipeline so as to convey sludge at the bottom of the tank to the PAC contact mixing tank through a circulating pump for cyclic utilization.
The utility model discloses following beneficial effect has:
(1) and (3) pollutant discharge after reaching standards: the utility model discloses an intermediate processing system combines the biochemical treatment system of front end and the advanced treatment system of rear end, the suspended solid that carries in the biochemical treatment system effluent has been got rid of, colloidal substance to and biochemical treatment is difficult to the benzene ring class of degradation, alkane class polluting substances, and simultaneously, because PAC's backward flow, further get rid of the COD in the waste water, get rid of the total hardness in the waste water simultaneously, pollutants such as suspended solid, for advanced treatment system ultrafiltration, reverse osmosis membrane's operation provides good operational environment, the rate of recovery of improvement membrane, long service life.
(2) The utilization rate of the powdered activated carbon is high: in the whole system, the powdered activated carbon which is not adsorbed and saturated in the powdered activated carbon adsorption concentration sedimentation tank completely flows back to the biochemical treatment system and the PAC contact mixing tank to be used as a carrier of a bacterial biomembrane for biochemical treatment, so that the utilization rate of the activated carbon and the biochemical treatment effect are further improved.
(3) The stability is good: the multistage control unit is arranged, all units are organically combined, the mode of wet-type addition of powdered activated carbon is adopted, the addition amount can be changed according to water quality, the condition that the water quality and the water amount of high-concentration organic pollutants in a coking enterprise fluctuate greatly is met, the water quality of discharged water can be fully guaranteed, and the multistage control unit has the advantages of strong impact load resistance and good stability.
(4) Investment is saved: the method adopts the mode of adding the powdered activated carbon, fully utilizes the characteristics of low price, flexible and convenient adding, no need of adding special equipment and structures and low capital investment, simultaneously utilizes the capability of removing soluble organic matters in water of the powdered activated carbon, reduces the later-period adding dosage and has low long-term investment cost.
(5) The efficiency is high: the powdered activated carbon is prepared into carbon slurry to be added, so that the powdered activated carbon can be rapidly and well mixed and contacted with treated water, the adsorption capacity of the powdered activated carbon is fully utilized, the adsorption rate is improved, and the method has the characteristics of flexibility, rapidness and high efficiency.
(6) The energy consumption is low: the whole system does not adopt any high-energy-consumption power system, so that the maintenance and operation cost of the system is greatly reduced.
(7) The operation and maintenance are convenient: the whole system does not adopt special equipment and structures, and is convenient to operate and maintain.
Drawings
FIG. 1 is the coking phenol cyanogen waste water intensive treatment system schematic diagram that the embodiment of the utility model provides.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As a first embodiment of the utility model, a coking phenol cyanogen waste water intensive treatment system is provided, including biochemical treatment system and advanced treatment system, still including being arranged in the effluent of biochemical treatment system carrying suspended solid, colloidal substance and biochemical treatment in the benzene ring class, the alkane class pollutant that are difficult to degrade carry out the intermediate treatment system who handles, biochemical treatment system's delivery port and intermediate treatment system's water inlet intercommunication, intermediate treatment system's delivery port and advanced treatment system's water inlet intercommunication, intermediate treatment system is arranged in handling benzene ring class, the alkane class pollutant that are difficult to degrade among the suspended solid, the colloidal substance and the biochemical treatment that carry in the effluent of biochemical treatment system to the waste water after will handling further carries for advanced treatment system handles.
Among the prior art, the waste water after the biochemical treatment system handles all directly gets into deep treatment system and handles, however because coking wastewater quality of water is unstable characteristics to lead to discharging and not reach new emission standard, still appear the accident of membrane processing unit collapse among the deep treatment system, the treatment cost risees, for inferior time, the utility model provides a coking phenol cyanogen waste water intensive treatment system, through intermediate processing system, the suspended solid that is difficult to degrade among the waste water after handling biochemical treatment system, colloidal substance and the biochemical treatment in the suspended solid that carries, alkane polluting substances carry out primary treatment earlier, later reentrant deep treatment system handles, provide good operational environment for deep treatment system ultrafiltration, reverse osmosis membrane's operation, improve the rate of recovery, life of membrane.
As shown in fig. 1, the intermediate treatment system includes a PAC contact mixing tank, a coagulation tank, a flocculation tank, an inclined tube sedimentation tank and a water outlet tank, wherein powdered activated carbon is added into the PAC contact mixing tank for contact mixing with the outlet water of the biochemical treatment system, the water inlet of the PAC contact mixing tank is communicated with the water outlet of the biochemical treatment system, the water outlet is communicated with the water inlet of the coagulation tank, the water outlet of the coagulation tank is communicated with the water inlet of the flocculation tank, the water outlet of the flocculation tank is communicated with the water inlet of the inclined tube sedimentation tank, the water outlet of the inclined tube sedimentation tank is communicated with the water inlet of the water outlet tank, and the water outlet of the water outlet tank is communicated with the deep treatment system.
Wherein, the water inlet of the PAC contact mixing tank is communicated with the water outlet of a sedimentation separation tank of the biochemical treatment system.
The PAC contact mixing tank is a powdered activated carbon contact mixing tank, which is referred to as PAC contact mixing tank in the text.
In the above embodiment, the powdered activated carbon is put into the PAC contact mixing tank, and the powdered activated carbon in the PAC contact mixing tank is fully mixed with the sewage in the effluent of the biochemical treatment system to play a role of the activated carbon, and after mixing, the powdered activated carbon sequentially passes through the coagulation tank, the flocculation tank and the inclined tube sedimentation tank for further treatment, and finally flows into the effluent tank, and flows into the advanced treatment system through the effluent tank, and the effluent tank also plays a role in buffering and storing the water produced by the advanced treatment system, and plays a role in buffering and adjusting the amount of the water supplied by the advanced treatment system.
Aiming at the problems of single technical measure, high investment cost, difficult operation and maintenance, serious influence on a membrane treatment unit in an advanced treatment system and the like commonly existing in a plurality of current technologies of high-toxicity and difficult-degradation high-concentration coking phenol-cyanogen wastewater. The utility model discloses a PAC contact mixing tank, the pond that thoughtlessly congeals, the flocculation basin, the middle processing system is constituteed to pipe chute sedimentation tank and play water pool multistage cooperative control unit, the corresponding suspended solid that carries in getting rid of biochemical treatment system effluent, colloidal substance, and the benzene ring class that biochemical treatment is difficult to degrade, alkane class polluting substances, and simultaneously, further get rid of the COD in the waste water, get rid of the total hardness in the waste water simultaneously, pollutants such as suspended solid, for retrieval and utilization processing unit ultrafiltration, reverse osmosis membrane's operation provides good operational environment, the rate of recovery of improvement membrane, long service life.
Size of each processing unit: the PAC contact mixing pool size is 5 multiplied by 2.5 multiplied by 4.7m, the coagulation pool size is 2.5 multiplied by 2 multiplied by 4.7m, the flocculation pool size is 3 multiplied by 2.5 multiplied by 4.7m, the inclined tube sedimentation pool size is 5 multiplied by 4.7m, and the effluent pool size is 5 multiplied by 4.2 multiplied by 4.7 m.
Preferably, the system further comprises a backwash water recycling pump, a water inlet of the backwash water recycling pump is respectively communicated to the multi-media filter and the ultrafiltration system in the advanced treatment system through pipelines, and a water outlet of the backwash water recycling pump is communicated to the PAC contact mixing tank through pipelines, so that backwash water enters the PAC contact tank for treatment; by the embodiment, the back washing water in the multi-medium filter and the ultrafiltration system is sent to the PAC contact mixing tank, so that the utilization rate of system resources is increased.
Preferably, the PAC contacts the mixing tank and includes that the powder active carbon who is used for throwing the powder active carbon into it puts in the device, set up in the PAC contacts the mixing tank and be used for carrying out the first agitator that stirs to the powder active carbon who throws in the PAC contacts the mixing tank, when throwing the powder active carbon, first agitator is in the stirring state to guarantee that carbon thick liquid concentration is unchangeable, the volume of throwing is stable.
Preferably, the PAC contact mixing tank is provided with a carbon slurry preparation device for preparing powdered activated carbon into carbon slurry, an inlet of the carbon slurry preparation device is communicated with a feeding port of the powdered activated carbon feeding device of the PAC contact mixing tank, and an outlet of the carbon slurry preparation device is communicated to the PAC contact mixing tank for preparing powdered activated carbon fed by the powdered activated carbon feeding device into carbon slurry and feeding the carbon slurry into the PAC contact mixing tank.
Through the embodiment, the powdered activated carbon added to the PAC contact mixing tank is powdered activated carbon slurry instead of granular activated carbon, so that the problems that a carbon sand filter tank adopted by the granular activated carbon is easily penetrated by high-concentration pollutants and the strengthening advanced treatment cannot be stably ensured can be well solved.
Preferably, the coagulation tank comprises a dosing device for adding a coagulant into the coagulation tank, a second stirrer for stirring the coagulant added into the coagulation tank is arranged in the coagulation tank, and the coagulant is one or more of industrial-grade polymeric ferric sulfate, polymeric aluminum chloride, polymeric aluminum sulfate and polyacrylamide.
Preferably, the flocculation basin is including being used for throwing in the flocculating agent input device of flocculating agent in to the flocculation basin, the flocculation basin in be provided with and be used for carrying out the third agitator that stirs to the flocculating agent of throwing in the flocculation basin, the flocculating agent is put in the device and is thrown the ring including supporting draft tube and medicament.
Preferably, the inclined tube sedimentation tank is internally provided with an inclined tube filler made of PP material with the length of 1m, the bottom of the inclined tube sedimentation tank is provided with a central transmission mud scraper, the bottom of the inclined tube sedimentation tank is also provided with a slurry pump and a circulating pump, and the water outlet of the slurry pump is communicated into the biochemical treatment system through a pipeline so as to send the sludge at the bottom of the inclined tube sedimentation tank back to the biochemical treatment system for cyclic utilization; and a water outlet of the circulating pump is communicated into the PAC contact mixing tank through a pipeline and is used for conveying sludge at the bottom of the tank to the PAC contact mixing tank through a circulating pump for cyclic utilization.
In the embodiment, the sludge at the bottom of the inclined tube sedimentation tank is sent back to the biochemical treatment system through the slurry pump and is sent to the PAC contact mixing tank through the circulating pump, and the sludge contains powdered activated carbon which is not adsorbed and saturated and can be used as a carrier of a biological membrane of bacteria for biochemical treatment, so that the utilization rate of the activated carbon and the biochemical treatment effect can be further improved.
The utility model discloses a coking phenol cyanogen waste water intensive treatment system, biochemical treatment system go out water and follow-up advanced treatment system's backwash water flows in proper order in powder active carbon contact mixed pond, thoughtlessly congeals pond, flocculation basin, pipe chute sedimentation tank and play water pool, provides good operational environment for ultrafiltration, reverse osmosis membrane unit among the advanced treatment system, then combines follow-up advanced treatment system, has realized COD among the coking phenol cyanogen waste waterCrLess than or equal to 30mg/L, and N less than or equal to 10mg/L, which reaches the direct discharge standard of GB16171-2012 discharge Standard of pollutants for coking chemistry industry.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. A coking phenol-cyanogen wastewater enhanced treatment system comprises a biochemical treatment system and an advanced treatment system, and is characterized by also comprising an intermediate treatment system used for treating suspended matters and colloidal substances carried in the effluent of the biochemical treatment system and benzene ring and alkane pollutants which are difficult to degrade in the biochemical treatment, wherein the water outlet of the biochemical treatment system is communicated with the water inlet of the intermediate treatment system, and the water outlet of the intermediate treatment system is communicated with the water inlet of the advanced treatment system;
the middle treatment system comprises a PAC contact mixing tank, a coagulation tank, a flocculation tank, an inclined tube sedimentation tank and a water outlet tank, wherein powdered activated carbon is added into the PAC contact mixing tank and is used for being in contact mixing with the outlet water of a biochemical treatment system, the water inlet of the PAC contact mixing tank is communicated with the water outlet of the biochemical treatment system, the water outlet is communicated with the water inlet of the coagulation tank, the water outlet of the coagulation tank is communicated with the water inlet of the flocculation tank, the water outlet of the flocculation tank is communicated with the water inlet of the inclined tube sedimentation tank, the water outlet of the inclined tube sedimentation tank is communicated with the water inlet of the water outlet tank, and the water outlet of the water outlet tank is communicated with the deep treatment system.
2. The intensified treatment system for coking phenol-cyanogen wastewater of claim 1, further comprising a backwash water reuse pump, wherein a water inlet of the backwash water reuse pump is respectively communicated to the multimedia filter and the ultrafiltration system in the advanced treatment system through pipelines, and a water outlet of the backwash water reuse pump is communicated to the PAC contact mixing tank through a pipeline.
3. The intensified treatment system for coking phenol-cyanogen wastewater of claim 1 wherein the PAC contact mixing tank has a water inlet in communication with a water outlet of a sedimentation separation tank of a biochemical treatment system.
4. The system for strengthening treatment of coking phenol-cyanogen wastewater of claim 1, wherein a first stirrer for stirring the powdered activated carbon added into the PAC contact mixing tank is arranged in the PAC contact mixing tank.
5. The intensified treatment system for coking phenol-cyanogen wastewater of claim 4, wherein the PAC contact mixing tank is provided with a carbon slurry preparation device, an inlet of the carbon slurry preparation device is communicated with a feeding port of the powdered activated carbon feeding device of the PAC contact mixing tank, and an outlet of the carbon slurry preparation device is communicated to the PAC contact mixing tank, so that the powdered activated carbon fed by the powdered activated carbon feeding device is prepared into carbon slurry and then fed into the PAC contact mixing tank.
6. The intensified treatment system for coking phenol-cyanogen wastewater of claim 1, wherein a second stirrer for stirring the coagulant added into the coagulation tank is disposed in the coagulation tank.
7. The system for intensively treating the coking phenol-cyanogen wastewater as claimed in claim 1, wherein a third stirrer for stirring the flocculant put into the flocculation tank is arranged in the flocculation tank.
8. The coking phenol-cyanogen wastewater enhanced treatment system of claim 1, wherein a slurry pump is arranged at the bottom of the inclined tube sedimentation tank, and a water outlet of the slurry pump is communicated into the biochemical treatment system through a pipeline for returning sludge at the bottom of the inclined tube sedimentation tank to the biochemical treatment system for recycling.
9. The system for strengthening treatment of coking phenol-cyanogen wastewater of claim 1, wherein a circulating pump is arranged at the bottom of the inclined tube sedimentation tank, and a water outlet of the circulating pump is communicated to the PAC contact mixing tank through a pipeline so as to recycle sludge at the bottom of the tank to the PAC contact mixing tank through the circulating pump.
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| CN201921916868.0U CN211664904U (en) | 2019-11-08 | 2019-11-08 | Coking phenol cyanogen waste water intensive treatment system |
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| CN201921916868.0U CN211664904U (en) | 2019-11-08 | 2019-11-08 | Coking phenol cyanogen waste water intensive treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683718A (en) * | 2019-11-08 | 2020-01-14 | 中冶南方都市环保工程技术股份有限公司 | Coking phenol cyanogen waste water intensive treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683718A (en) * | 2019-11-08 | 2020-01-14 | 中冶南方都市环保工程技术股份有限公司 | Coking phenol cyanogen waste water intensive treatment system |
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