CN211813984U - System for coal chemical industry waste water is handled to biological catalytic oxidation technique - Google Patents
System for coal chemical industry waste water is handled to biological catalytic oxidation technique Download PDFInfo
- Publication number
- CN211813984U CN211813984U CN201922070946.6U CN201922070946U CN211813984U CN 211813984 U CN211813984 U CN 211813984U CN 201922070946 U CN201922070946 U CN 201922070946U CN 211813984 U CN211813984 U CN 211813984U
- Authority
- CN
- China
- Prior art keywords
- tank
- biological
- sedimentation tank
- catalytic oxidation
- coal chemical
- 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.)
- Active
Links
Images
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model discloses a system for coal chemical industry waste water is handled to biological catalytic oxidation technique, include the grid canal in proper order, hydrolysis-acidification pool, the one-level sedimentation tank, biological catalytic oxidation pond, the second grade sedimentation tank, coagulating sedimentation tank, the sand filter, the clean water basin, utilize activated carbon carrier strong adsorption, fix surface and the hole at activated carbon to the high-efficient microorganism that can effectively improve degradation target organic matter speed, it carries out immobilization processing to the microbial inoculum to recycle agar, prepare into immobilized biological oxidation catalyst, add to the biological pond, break the restriction step among the biodegradable process, improve the speed of organic matter degradation fast.
Description
Technical Field
The utility model relates to a waste water treatment field, concretely relates to system for coal chemical industry waste water is handled to biological catalytic oxidation technique.
Background
Coal chemical wastewater is industrial wastewater produced in a coal chemical production process. The characteristics of the coal chemical industry wastewater: (1) the components are complex and the concentration of pollutants is high. (2) Large hazard and poor biodegradability: various organic pollutants in the coal chemical industry wastewater are difficult to degrade, so the coal chemical industry wastewater is hazardous. The coal chemical industry wastewater has high content of organic matters such as heterocyclic and aromatic compounds, is difficult to biodegrade, exceeds the tolerance limit of microorganisms in the wastewater, has toxic action on the microorganisms, is not beneficial to the survival of the microorganisms, has poor biodegradability and belongs to one of industrial wastewater difficult to treat.
The mature technology at present is a combined technology of PAC and activated sludge for treating coal chemical wastewater. By utilizing the adsorption capacity of PAC, organic matters and dissolved oxygen are concentrated on the surface and the periphery of the powdered activated carbon, so that the concentration of refractory substances and toxic substances in a macroscopic environment is reduced, the activity of free microorganisms is improved, and the capability of decomposing and removing pollutants is enhanced. Meanwhile, the PAC adsorbs refractory substances and microorganisms, so that the contact time of the microorganisms and the substances is prolonged. As a result of long-term operation, the microorganisms are domesticated, and the removal effect on the organic matters difficult to degrade is improved. However, PAC loss is serious, long-term replenishment is needed, the cost is high, in addition, PAC can only improve the treatment effect of activated sludge on coal chemical wastewater, the system operation time is longer, generally reaching more than 30h, and the effluent is generally more than 100 mg/L.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a system for coal chemical industry waste water is handled to biological catalytic oxidation technique to solve the above-mentioned defect that leads to among the prior art.
A system for treating coal chemical wastewater by a biological catalytic oxidation technology is characterized by sequentially comprising a grid channel, a hydrolysis acidification tank, a primary sedimentation tank, a biological catalytic oxidation tank, a secondary sedimentation tank, a coagulation sedimentation tank, a sand filter tank and a clean water tank; wherein PAC and PAM are arranged in the primary sedimentation tank as flocculating agents and coagulant aids; adding an immobilized biological oxidation catalyst into the biological catalytic oxidation tank; the second-stage sedimentation tank adopts a gravity sedimentation method, immobilized biological oxidation catalyst, activated sludge and the like flow back to the biological catalytic oxidation tank, and effluent overflows to the coagulation sedimentation tank; the coagulating agent in the coagulating sedimentation tank adopts aluminum ferric sulfate, the flocculating agent adopts PAM, the coagulating tank is a rapid mixing reaction tank, and the flocculation reaction tank is a folded plate hydraulic reaction tank; back washing water in the sand filtering pond comes from a clean water pond, and back washing effluent is discharged to a coagulating sedimentation pond; an online detection system is arranged in the clean water tank to detect the COD concentration and the ammonia nitrogen concentration of the effluent.
Preferably, activated carbon is selected as an immobilized carrier for immobilizing the biological oxidation catalyst in the biological catalytic oxidation pond.
Preferably, the hydrolysis acidification tank is divided into a pH adjusting tank and a hydrolysis acidification tank.
Preferably, the hydrolysis acidification pool is provided with a plurality of galleries which are operated in parallel.
Preferably, a submersible stirrer is arranged in the hydrolysis acidification tank.
The utility model has the advantages that: the treatment rate of the coal chemical wastewater can be improved, and the floor area of a biochemical system is reduced; the addition of the immobilized biological oxidation catalyst can degrade organic matters which can not be degraded by the activated sludge, and the pollution indexes in the effluent quality of the system are greatly reduced; the stability and the impact resistance of a biochemical system added with the immobilized biological oxidation catalyst have certain promotion effect; the particle size of the immobilized biological oxidation catalyst is less than 0.3cm, the precipitation effect is good, the recovery efficiency is high, the immobilized biological oxidation catalyst can be added once, the operation for many years can be maintained, and the operation cost is reduced.
Drawings
FIG. 1 is a schematic view of a system for treating coal chemical wastewater by biocatalytic oxidation according to the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1, a system for treating coal chemical wastewater by a biological catalytic oxidation technology is characterized by sequentially comprising a grid channel 1, a hydrolysis acidification tank 2, a primary sedimentation tank 3, a biological catalytic oxidation tank 4, a secondary sedimentation tank 5, a coagulation sedimentation tank 6, a sand filter tank 7 and a clean water tank 8;
wherein, the hydrolysis acidification pool 2: the wastewater is divided into a pH adjusting tank and a hydrolysis acidification tank, and the wastewater overflows into the hydrolysis acidification tank 2 after being adjusted to 7.5-8.5 in the pH adjusting tank. The hydrolysis acidification pool 2 is provided with a plurality of galleries which are connected in parallel for operation and has the functions of hydrolysis acidification and an adjusting pool, a submersible stirrer is arranged in the pool to strengthen the mutual contact between sludge and wastewater, improve the mass transfer reaction rate and prevent sludge particles in the pool from depositing, and the residence time of the hydrolysis acidification pool is 24-32 hours;
a first-stage sedimentation tank 3: PAC and PAM are used as a flocculating agent and a coagulant aid, and the retention time is 3-6 h;
and (4) biological catalytic oxidation tank: adopting a Biological Catalytic Oxidation Technology (BCOT), wherein the addition amount of the immobilized biological oxidation catalyst is 4-10% of the total volume, the content of the activated sludge is 1000-2000 mg/L, and the retention time is 12-24 h;
a secondary sedimentation tank 5: adopting a gravity settling method, enabling the immobilized biological oxidation catalyst, the activated sludge and the like to flow back to the biological catalytic oxidation tank, and enabling effluent to overflow to the coagulation sedimentation tank, wherein the retention time is 3-6 h;
a coagulating sedimentation tank 6: the coagulant is aluminum ferric sulfate and the flocculant is PAM. The coagulation tank adopts a rapid mixing reaction tank, the hydraulic retention time is 2min, the flocculation reaction tank adopts a folded plate hydraulic reaction tank, the hydraulic retention time is 14min, and the total retention time of the coagulation sedimentation tank is 4-6 h;
and (3) a sand filter 7: backwashing water comes from the clean water tank, and backwashing effluent is discharged to the coagulating sedimentation tank 6. The retention time of the sand filter is 0.5-1 h;
the clean water tank 8: and (3) an online detection system is arranged to detect the COD concentration and the ammonia nitrogen concentration of the effluent, if the COD is less than or equal to 50mg/L and the ammonia nitrogen is less than or equal to 5mg/L, the effluent is discharged outside, and if not, the effluent flows back to the pH adjusting tank part in the hydrolysis acidification tank 2.
The biological catalytic oxidation tank mainly adopts a Biological Catalytic Oxidation Technology (BCOT), wherein the BCOT is a technology for fixing microorganisms with the capacity of efficiently oxidizing organic matters on activated carbon to form an efficient immobilized microbial inoculum taking the activated carbon as a carrier, and then putting the immobilized microbial inoculum into an aerobic biochemical tank to degrade the organic matters in the wastewater. The microorganism after being immobilized in a certain time has no change in the character and quantity, so the immobilized biological oxidation catalyst is called as immobilized biological oxidation catalyst.
The immobilized biological oxidation catalyst needs to meet the following requirements:
selecting and purchasing or developing an efficient microbial inoculum capable of efficiently degrading coal chemical wastewater;
selecting active carbon with specific surface area not less than 1000m2/g, pore volume not less than 0.8m2/g, strength not less than 90%, iodine adsorption value not less than 1000mg/g and particle size less than 0.3cm, and using the active carbon as an immobilized carrier after modification treatment such as cleaning, acid washing, alkali washing, secondary cleaning and the like;
placing the liquid culture medium and the modified activated carbon into a container at normal temperature, stirring for 1-2 h, sterilizing at 121 ℃ for 30min, cooling to room temperature while stirring after sterilization, and continuously stirring for 2-4 h to prepare the biocatalyst carrier;
inoculating high-efficiency liquid microbial inoculum in the container for fermentation culture;
fifthly, draining the liquid after the culture is finished, collecting the solid, and then adding 1% agar stationary liquid for immobilization;
sixthly, after the immobilization is finished, washing the immobilized bio-oxidation catalyst for 1 to 2 times by clear water to obtain immobilized particles, namely the immobilized bio-oxidation catalyst;
seventhly, the immobilized biological oxidation catalyst is put into an aerobic biochemical tank to carry out catalytic oxidation reaction under the aeration condition, and organic matters in the wastewater are degraded.
The pH value of inlet water of the coal chemical industry wastewater is 6-9, COD is less than or equal to 800mg/L, ammonia nitrogen is less than or equal to 20mg/L, chroma is less than or equal to 500 times, and SS is less than or equal to 300 mg/L; COD of the effluent of the hydrolysis acidification tank is less than or equal to 700mg/L, and the chroma is less than or equal to 450 times; COD of the effluent of the primary sedimentation tank is less than or equal to 650mg/L, and SS is less than or equal to 200 mg/L; COD of the effluent of the biological catalytic oxidation tank is less than or equal to 70mg/L, ammonia nitrogen is less than or equal to 5mg/L, and chroma is less than 50 times; COD of the effluent of the secondary sedimentation tank is less than or equal to 60mg/L, and SS is less than or equal to 120 mg/L; COD of the effluent of the coagulating sedimentation tank is less than or equal to 50mg/L, SS is less than or equal to 80mg/L, and the chroma is less than 40 times; the SS of the effluent of the sand filter is less than 70 mg/L; the pH of the effluent of the clean water tank is 6-9, the COD is less than or equal to 50mg/L, the ammonia nitrogen is less than or equal to 5mg/L, the chroma is less than 40 times, and the SS is less than 70 mg/L.
The utility model discloses with the strong adsorbability of active carbon carrier, fix the high-efficient microorganism that can effectively improve degradation target organic matter speed on the surface and the hole of active carbon, recycle agar and carry out immobilization treatment to the microbial inoculum, prepare into immobilized bio-oxidation catalyst, add to the biological pond, break the restriction in the biodegradable process, improve the speed of organic matter degradation fast.
In addition, the activated carbon is added into the system, organic matters which are difficult to degrade can be adsorbed, the concentrations of difficult-to-degrade substances and toxic substances in a macroscopic environment are reduced, the activity of microorganisms in a free state is improved, the capability of decomposing and removing pollutants is enhanced, and the stability and the impact resistance of a biochemical system are promoted to a certain extent.
The utility model discloses a BCO technique will have the microorganism of high-efficient oxidation organic matter ability to fix on the active carbon, forms the high-efficient immobilized bacteria agent who uses the active carbon as the carrier to the form of catalyst is thrown to the good oxygen biochemical pond, improves degradation efficiency and the degradation effect of organic matter in the waste water. The system has more stable and rapid operation, better water outlet effect, saved operation cost and reduced floor area of the biochemical system.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (5)
1. A system for treating coal chemical wastewater by a biological catalytic oxidation technology is characterized by sequentially comprising a grid channel (1), a hydrolysis acidification tank (2), a primary sedimentation tank (3), a biological catalytic oxidation tank (4), a secondary sedimentation tank (5), a coagulating sedimentation tank (6), a sand filter (7) and a clean water tank (8); wherein PAC and PAM are arranged in the primary sedimentation tank (3) as flocculating agents and coagulant aids; an immobilized biological oxidation catalyst is added into the biological catalytic oxidation tank (4); the second-stage sedimentation tank (5) adopts a gravity sedimentation method, the immobilized biological oxidation catalyst and the activated sludge flow back to the biological catalytic oxidation tank, and the effluent overflows to the coagulation sedimentation tank; aluminum ferric sulfate diacetate is adopted as a coagulation agent in the coagulation sedimentation tank (6), PAM is adopted as a flocculating agent, the coagulation tank is a rapid mixing reaction tank, and the flocculation reaction tank is a folded plate hydraulic reaction tank; backwashing water in the sand filter (7) comes from a clean water tank, and backwashing effluent is discharged to a coagulating sedimentation tank; an online detection system is arranged in the clean water tank (8) to detect the COD concentration and the ammonia nitrogen concentration of the effluent.
2. The system for treating coal chemical industry wastewater by using the biocatalytic oxidation technology according to claim 1, characterized in that: active carbon is selected as an immobilized carrier of the immobilized biological oxidation catalyst in the biological catalytic oxidation tank (4).
3. The system for treating coal chemical industry wastewater by using the biocatalytic oxidation technology as claimed in claim 2, wherein the system comprises: the hydrolysis acidification tank (2) is divided into a pH adjusting tank and a hydrolysis acidification tank.
4. The system for treating coal chemical industry wastewater by using the biocatalytic oxidation technology according to claim 3, characterized in that: the hydrolysis acidification pool (2) is provided with a plurality of galleries which are connected in parallel for operation.
5. The system for treating coal chemical industry wastewater by using the biocatalytic oxidation technology according to claim 4, wherein the system comprises: a submersible stirrer is arranged in the hydrolysis acidification tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922070946.6U CN211813984U (en) | 2019-11-26 | 2019-11-26 | System for coal chemical industry waste water is handled to biological catalytic oxidation technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922070946.6U CN211813984U (en) | 2019-11-26 | 2019-11-26 | System for coal chemical industry waste water is handled to biological catalytic oxidation technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211813984U true CN211813984U (en) | 2020-10-30 |
Family
ID=73028315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922070946.6U Active CN211813984U (en) | 2019-11-26 | 2019-11-26 | System for coal chemical industry waste water is handled to biological catalytic oxidation technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211813984U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110921982A (en) * | 2019-11-26 | 2020-03-27 | 中冶天工集团有限公司 | System and method for treating coal chemical industry wastewater by biological catalytic oxidation technology |
| CN115159790A (en) * | 2022-08-03 | 2022-10-11 | 北京恩菲环保技术有限公司 | Treatment method of printing and dyeing wastewater |
-
2019
- 2019-11-26 CN CN201922070946.6U patent/CN211813984U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110921982A (en) * | 2019-11-26 | 2020-03-27 | 中冶天工集团有限公司 | System and method for treating coal chemical industry wastewater by biological catalytic oxidation technology |
| CN115159790A (en) * | 2022-08-03 | 2022-10-11 | 北京恩菲环保技术有限公司 | Treatment method of printing and dyeing wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105585220B (en) | A kind of urban sewage treatment system and purification method | |
| CN105293833B (en) | Comprehensive wastewater treatment device and process for iron and steel integrated enterprise | |
| CN105036495B (en) | A kind of ion exchange and the integrated method for removing nitrate nitrogen in eliminating water of denitrification | |
| CN106927628A (en) | Light electrolysis-Fenton-EGSB-A/O-BCO-BAF-coagulating treatment pharmacy waste water technique | |
| CN107117767B (en) | Petrochemical wastewater treatment method | |
| CN109592840A (en) | A kind of School Wastewater processing unit | |
| CN105753270B (en) | A kind of water purification system suitable for high ammonia nitrogen livestock breeding wastewater | |
| CN101468859A (en) | Advanced purification treatment system for high concentrated organic wastewater | |
| CN204779148U (en) | Coking wastewater advanced treatment and recycling system | |
| CN110921982A (en) | System and method for treating coal chemical industry wastewater by biological catalytic oxidation technology | |
| CN111762970A (en) | Method for treating leachate of garbage transfer station | |
| CN105481174A (en) | Wastewater treatment system in rubber and synthetic plastic industry | |
| CN107686162A (en) | A kind of preparation method and technology of efficient dephosphorization denitrogenation biomaterial | |
| CN211813984U (en) | System for coal chemical industry waste water is handled to biological catalytic oxidation technique | |
| CN109775933A (en) | A kind of disposable butyronitrile gloves production sewage treatment and intermediate water reuse system | |
| CN110526504B (en) | System and method for treating regenerated waste liquid of targeted denitrification and dephosphorization resin | |
| CN201301254Y (en) | Buried type oligodynamic sewage treatment device | |
| CN207512019U (en) | A kind of sanitary sewage, technique waste water, stripper Wastewater Concentrated device | |
| CN111606502A (en) | Harmless wastewater treatment process and system for livestock and poultry died of diseases | |
| CN115231716B (en) | Biological promoter for treating wastewater produced by ion exchange resin, and preparation method and application thereof | |
| CN206624744U (en) | Light electrolysis Fenton EGSB A/O BCO BAF coagulating treatment pharmacy waste water systems | |
| CN109320029A (en) | Liquor production wastewater processing method and system | |
| CN214735172U (en) | Wastewater treatment device and wastewater treatment system | |
| CN108314268A (en) | The carrier for embedding press filtration sludge is combined the method and system of processing landfill leachate with fluid bed | |
| CN103508629A (en) | Wastewater treatment system for food industry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |