CN215855636U - System for compound desorption COD of coking wastewater - Google Patents
System for compound desorption COD of coking wastewater Download PDFInfo
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- CN215855636U CN215855636U CN202121108452.3U CN202121108452U CN215855636U CN 215855636 U CN215855636 U CN 215855636U CN 202121108452 U CN202121108452 U CN 202121108452U CN 215855636 U CN215855636 U CN 215855636U
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Abstract
The utility model discloses a system for compositely removing COD (chemical oxygen demand) from coking wastewater, which comprises a biological circulating fluidized bed and a high-efficiency cyclone separation device, wherein the wastewater enters an upper wastewater inlet of the biological circulating fluidized bed, a water outlet of the biological circulating fluidized bed is conveyed to a water distribution channel of the high-efficiency cyclone separation device through a lifting water pump, a stirring device is arranged in the water distribution channel of the high-efficiency cyclone separation device, a settling zone communicated with the bottom of the water distribution channel is arranged in the high-efficiency cyclone separation device, inclined tube filler is arranged above the settling zone of the high-efficiency cyclone separation device, a water collection channel is arranged above the inclined tube filler, a V-shaped filter tank is arranged at the other end of the high-efficiency cyclone separation device corresponding to the water collection channel, and filter materials are filled in the V-shaped filter tank. The utility model can improve the coking wastewater treatment efficiency, reduce the discharge, effectively decontaminate and decolor so as to reach the wastewater discharge standard, protect the ecological environment, and has the advantages of reasonability, simplicity, easy production and manufacture, and convenient use and operation.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a system for compositely removing COD (chemical oxygen demand) from coking wastewater.
Background
The Fenton oxidation process is characterized by requiring conditions, requiring better treatment effect, lower pollutant solubility and the like. The main medicaments for treating by the Fenton method are ferrous sulfate, hydrogen peroxide, acid and alkali, and the problems of the Fenton method are mainly as follows:
1. the fenton oxidation process is labor intensive. The operation difficulty of hydrogen peroxide is high, the ferrous sulfate must be solid during the addition, the ferrous sulfate contains about 20 percent of iron, and compared with 11 percent of iron of the polyferric, the treatment strength of the sludge is greatly improved.
2. The Fenton oxidation process has high cost and more sludge. The medicament cost of the hydrogen peroxide is high.
3. The fenton oxidation process is prone to color reversion. (for example, the dosage and the dosage proportion of the hydrogen peroxide and the ferrous sulfate are not well controlled, or ferric iron is not precipitated, so that the wastewater is yellowish or tawny.)
4. The fenton oxidation process is difficult to control. The optimal proportion of the hydrogen peroxide and the ferrous sulfate can be obtained only by performing an orthogonal test and is influenced by the pH value of the reaction, the length of the reaction time and the stirring and mixing degree, so that the proportion is difficult to control.
5. The Fenton oxidation process has high corrosivity, and the cement pool can be corroded. The oxydol has strong oxidizing property, the oxidizing property is second to that of fluorine gas (F2), and if the protection is not good, the ferrous sulfate has certain corrosion to human bodies.
The Fenton oxidation technology uses a large amount of medicament, secondary pollution can be caused, and the treatment effect cannot stably reach the discharge standard.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a system for the composite removal of COD from coking wastewater, which can improve the treatment efficiency of coking wastewater, reduce the discharge, effectively decontaminate and decolor to reach the wastewater discharge standard and protect the ecological environment.
The system for compositely removing COD from coking wastewater comprises a biological circulating fluidized bed and a high-efficiency cyclone separation device, wherein the biological circulating fluidized bed is used for removing chromaticity in the wastewater, the wastewater enters an upper wastewater inlet of the biological circulating fluidized bed, a water outlet of the biological circulating fluidized bed is conveyed to a water distribution channel of the high-efficiency cyclone separation device through a lifting water pump, a stirring device is arranged in the water distribution channel of the high-efficiency cyclone separation device, a settling zone communicated with the bottom of the water distribution channel is arranged in the high-efficiency cyclone separation device, inclined tube filler is arranged above the settling zone of the high-efficiency cyclone separation device, a water collection channel is arranged above the inclined tube filler of the high-efficiency cyclone separation device, a V-shaped filter tank is arranged at the other end of the high-efficiency cyclone separation device corresponding to the water collection channel, and filter materials are filled in the V-shaped filter tank.
As a further improvement of the scheme, the biological circulating fluidized bed is a cuboid, the interior of the biological circulating fluidized bed is partitioned and arranged, biological fillers are filled in the biological circulating fluidized bed, and aeration devices are arranged at the bottom of the biological circulating fluidized bed in a staggered mode.
The utility model has the beneficial effects that:
compared with the prior art, the system for the composite removal of COD from the coking wastewater provided by the utility model has the advantages that the wastewater enters the biological circulating fluidized bed, the biological adsorption and the further strong biological degradation are carried out by the biological circulating fluidized bed, the reduction of the COD value and the chromaticity of the wastewater is ensured, and the effluent of the biological circulating fluidized bed enters the high-efficiency cyclone separation device through the lifting water pump for flocculation and precipitation.
Specifically, wastewater enters an upper end wastewater inlet of a biological circulating fluidized bed, a water outlet of the biological circulating fluidized bed is conveyed to a water distribution channel on the upper part of an efficient cyclone separation device through a lifting water pump, a medicament and the wastewater fully perform vortex flow through a stirring device, the wastewater enters a settling zone from the bottom, sludge sinks into the bottom, one part of the sludge is used for backflow, the other part of the sludge is periodically discharged to a sludge concentration tank through the settling zone, the wastewater is discharged from a water collection channel through an inclined tube filler and enters a V-shaped filter tank, larger particles flocculated in the water are intercepted by a filter material through the filtering action of the filter material, and clean water enters a clean water tank through the filter material. After the V-shaped filter tank operates for a period of time, a large amount of suspended particles in water are intercepted in the filter material, along with the continuous increase of the interception amount, the filtration water amount is gradually reduced, the filtration resistance is continuously increased, and when the filtration resistance reaches a certain degree, backwashing is carried out to remove the intercepted suspended particles and keep the normal operation of the V-shaped filter tank. The system for composite removal of COD from coking wastewater provided by the utility model can improve the efficiency of coking wastewater treatment, reduce discharge, effectively decontaminate and decolor to reach the wastewater discharge standard and protect the ecological environment, and has the advantages of reasonable and simple structure, easy production and manufacture, and convenient use and operation.
Drawings
The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
wherein, 1-a biological circulating fluidized bed; 2-high-efficiency cyclone separation device; 3-distributing the canal; 4-a stirring device; 5-a precipitation zone; 6-inclined tube filling; 7-collecting the canal; 8-V type filter.
Detailed Description
As shown in figure 1, the system for the composite removal of COD from coking wastewater provided by the utility model is characterized in that wastewater enters a biological circulating fluidized bed 1, biological adsorption and further biological strong degradation are carried out through the biological circulating fluidized bed 1, the reduction of the COD value and the chromaticity of the wastewater is ensured, and effluent of the biological circulating fluidized bed 1 enters a high-efficiency cyclone separation device 2 through a lifting water pump for flocculation and precipitation.
Specifically, waste water enters an upper end waste water inlet of a biological circulating fluidized bed 1, a water outlet of the biological circulating fluidized bed 1 is conveyed to a water distribution channel 3 on the upper portion of an efficient cyclone separation device 2 through a lifting water pump, a medicament and the waste water are enabled to fully perform vortex flow through an agitating device 4, the waste water enters a settling zone 5 from the bottom, sludge sinks into the bottom, one part of the waste water is used for backflow, one part of the waste water is periodically discharged to a sludge concentration tank through the settling zone 5, the waste water is discharged from a water collecting channel 7 through an inclined tube filler 6 and enters a V-shaped filter tank 8, large flocculated particles in the water are intercepted by a filter material through the filtering action of the filter material, and clear water enters a clear water tank through the filter material. After the V-shaped filter 8 operates for a period of time, a large amount of suspended particles in water are intercepted in the filter material, along with the continuous increase of the interception amount, the filtration water amount is gradually reduced, the filtration resistance is continuously increased, and when the filtration resistance reaches a certain degree, backwashing is carried out to remove the intercepted suspended particles and keep the normal operation of the V-shaped filter 8.
The biological circulating fluidized bed 1 is generally designed into A cuboid, is arranged in A partition way, is internally provided with biological fillers, is aerated and supplied with oxygen in A staggered mode at the bottom, is added with biological carriers (PTR-A and TOC composite formulA materials) during operation, and is aerated and contacted for reaction uniformly in the tank, so that the aim of fully contacting wastewater with the biological fillers and the biological carriers is fulfilled. During operation, the waste water contacts with the biological filler, the microorganisms are attached to the biological filler and the biological carrier, organic matters in the water are adsorbed by the microorganisms at high density, oxidized and decomposed and partially converted into a new biological film, and the biological film is directly stirred by airflow, so that the updating of the biological film is accelerated, the biological film is enabled to always keep higher activity, and the waste water is purified.
The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.
Claims (2)
1. The utility model provides a system of compound desorption COD of coking wastewater which characterized in that: the device comprises a biological circulating fluidized bed and a high-efficiency cyclone separation device, wherein the biological circulating fluidized bed is used for removing chromaticity in wastewater, the wastewater enters an upper wastewater inlet of the biological circulating fluidized bed, a water outlet of the biological circulating fluidized bed is conveyed to a water distribution channel of the high-efficiency cyclone separation device through a lifting water pump, the high-efficiency cyclone separation device is provided with a stirring device in the water distribution channel, a settling zone communicated with the bottom of the water distribution channel is arranged in the high-efficiency cyclone separation device, inclined tube packing is arranged above the settling zone of the high-efficiency cyclone separation device, a water collection channel is arranged above the inclined tube packing of the high-efficiency cyclone separation device, a V-shaped filter pool is arranged at the other end of the high-efficiency cyclone separation device corresponding to the water collection channel, and filter materials are filled in the V-shaped filter pool.
2. The system for the composite removal of COD from coking wastewater according to claim 1 is characterized in that: the biological circulating fluidized bed is a cuboid, the interior of the biological circulating fluidized bed is partitioned and arranged, biological fillers are filled in the biological circulating fluidized bed, and aeration devices are arranged at the bottom of the biological circulating fluidized bed in a staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121108452.3U CN215855636U (en) | 2021-05-21 | 2021-05-21 | System for compound desorption COD of coking wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121108452.3U CN215855636U (en) | 2021-05-21 | 2021-05-21 | System for compound desorption COD of coking wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215855636U true CN215855636U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121108452.3U Active CN215855636U (en) | 2021-05-21 | 2021-05-21 | System for compound desorption COD of coking wastewater |
Country Status (1)
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| CN (1) | CN215855636U (en) |
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2021
- 2021-05-21 CN CN202121108452.3U patent/CN215855636U/en active Active
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