CN215798848U - Organic waste lye treatment device - Google Patents
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- CN215798848U CN215798848U CN202120920907.5U CN202120920907U CN215798848U CN 215798848 U CN215798848 U CN 215798848U CN 202120920907 U CN202120920907 U CN 202120920907U CN 215798848 U CN215798848 U CN 215798848U
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Abstract
The utility model relates to the technical field of waste alkali liquid treatment, in particular toThe treatment device of machine waste lye, treatment device is including the deoiling system, the oxidation system and the system of deposiing that communicate in proper order for carry out oil-water separation, oxidation and sediment with organic waste lye in proper order. The oil removal system can remove oil in the waste alkali liquor, can improve the biodegradability of the waste alkali liquor, and can perform oxidative decomposition on pollutants such as COD (chemical oxygen demand), sulfide, ammonia, cyanogen and the like in high-concentration organic wastewater through the arranged oxidation system to convert the pollutants into CO2、SO4 2‑、N2And water and other harmless components, and the precipitation system can remove hardness and partial suspended matters in the water and meet the requirement of subsequent biochemical treatment.
Description
Technical Field
The utility model relates to the technical field of waste alkali liquid treatment, in particular to a treatment device of organic waste alkali liquid.
Background
The treatment of the high-concentration organic waste alkali liquor is a large environmental protection subject which needs to be focused on in a project of preparing olefin from methanol, the organic waste alkali liquor has high salt content, high organic matters, high oil content, poor biodegradability and very large treatment difficulty, and the sewage treatment can hardly reach the standard by the conventional technology. How to properly dispose the waste liquid so as to meet the requirements of ecological environment, no hidden danger and no tail, which is the key for the project to pass the environmental protection acceptance and reach the environmental protection requirement stably for a long time. The existing waste alkali incineration is a mainstream treatment device and is characterized by simple operation, thorough oxidation reaction, and no secondary pollution problem because products are carbon dioxide and water after organic matter incineration. The disadvantages are high energy consumption and operation cost caused by fuel gas consumption, and short service life of the refractory bricks affected by alkali corrosion. Under the current trend of descending economic benefits of enterprises, the incineration method is obviously not the best method for treating the waste lye.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for treating organic waste lye, which aims to overcome the problem of poor economic benefit of the method for treating the organic waste lye in the prior art.
In order to achieve the purpose, the utility model provides a treatment device of organic waste alkali liquor, which comprises an oil removal system, an oxidation system and a precipitation system which are sequentially communicated, and is used for sequentially carrying out oil-water separation, oxidation and precipitation on the organic waste alkali liquor.
Preferably, the deoiling system still includes the fatlute collecting pit including oil interceptor, multi-media filter, air supporting pond, oil water separator that communicate in proper order, the fatlute collecting pit respectively with the oil interceptor the air supporting pond with oil water separator intercommunication.
Preferably, the oil separation tank is used for carrying out primary oil-water separation on the organic waste lye, and sending the obtained oil phase into the oil sludge collection tank.
Preferably, the multi-media filter is used for carrying out secondary oil-water separation on the water phase obtained by the primary oil-water separation.
Preferably, the floatation tank is used for carrying out tertiary oil-water separation on the water phase obtained by the secondary oil-water separation, and sending the obtained oil phase into the oil sludge collection tank.
Preferably, the oil-water separator is used for performing oil-water separation on the water phase obtained by the oil-water separation for three times, and sending the obtained oil phase to the oil sludge collecting pool.
Preferably, an oil collector is arranged in the oil separation tank and used for collecting and conveying the oil phase.
Preferably, N medium layers are arranged in the multi-medium filter, and the first medium layer, the second medium layer … …, the N-1 th medium layer and the N-th medium layer are arranged from bottom to top in sequence, wherein N is larger than or equal to 2.
Preferably, 3 medium layers are arranged in the multi-medium filter, and a first medium layer, a second medium layer and a third medium layer are arranged in sequence from bottom to top;
preferably, the first medium layer is filled with quartz sand, the particle size of the quartz sand is 0.4-0.65mm, and the height of the first medium layer is 300-500 mm;
preferably, anthracite is filled in the second medium layer, the particle size of the anthracite is 0.8-1.4mm, and the height of the second medium layer is 400-600 mm;
preferably, the third medium layer is filled with activated carbon, the particle size of the activated carbon is 2-3mm, and the height of the third medium layer is 400-600 mm.
Preferably, the treatment device further comprises an aeration gas source communicated with the air flotation tank and used for aerating the air flotation tank.
Preferably, the source of aerated gas comprises carbon dioxide.
Preferably, the oil removing system further comprises a water collecting tank, wherein the water collecting tank is communicated with the oil-water separator and the oxidation system and is used for collecting a water phase obtained by four times of oil-water separation and introducing the water phase into the oxidation system for oxidation treatment.
Preferably, the water collecting tank is communicated with the top end of the multi-media filter and is used for introducing the water phase in the water collecting tank into the multi-media filter and flushing the multi-media filter.
Preferably, the bottom end of the multimedia filter is communicated with a conveying pipeline for introducing the washing water obtained by washing into the conveying pipeline.
Preferably, the oxidation system comprises an oxidation tower and a catalyst disposed within the oxidation tower.
Preferably, the sedimentation system comprises a sedimentation tank, and a mixed solution for chemically removing hardness of the organic waste lye is contained in the sedimentation tank.
Preferably, the treatment device further comprises a gasification sewage conveying pipeline arranged between the oxidation system and the precipitation system, and the gasification sewage conveying pipeline is used for inputting gasification sewage into the precipitation system and reducing the pH value of the organic waste alkali liquor.
Through the technical scheme, the utility model is provided withThe oil removing system can remove oil in the waste alkali liquor, can improve the biodegradability of the waste alkali liquor, and can perform oxidative decomposition on pollutants such as COD (chemical oxygen demand), sulfide, ammonia, cyanogen and the like in high-concentration organic wastewater through the arranged oxidation system to convert the pollutants into CO2、 SO4 2-、N2And water and other harmless components, and the precipitation system can remove hardness and partial suspended matters in the water and meet the requirement of subsequent biochemical treatment.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for treating organic waste lye according to an embodiment of the present invention.
Description of the reference numerals
1. Conveying pipeline 2 and oil removing system
22. Oil separation tank 23 and intermediate water tank
24. Oil collector 25 and multi-media filter
26. Air floatation tank 27 and oil-water separator
28. Oil collecting area 29 and water collecting tank
3. Oxidation system 4, precipitation system
5. Sludge treatment system 6 and aeration air source
7. Gasification sewage transfer pipeline 211 and oil sludge collecting tank
41. Partition 42, first settling zone
43. Second settling zone
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" generally refer to the inner and outer relative to the profile of the components themselves; "distal and proximal" generally refer to distance relative to the contour of the components themselves.
FIG. 1 is a schematic structural diagram of an apparatus for treating organic waste lye according to an embodiment of the present invention, and as shown in FIG. 1, the present invention provides an apparatus for treating organic waste lye, which comprises an oil removal system 2, an oxidation system 3 and a precipitation system 4, which are connected in sequence, for sequentially performing oil-water separation, oxidation and precipitation on the organic waste lye.
The organic waste alkali liquid, in particular to the byproduct organic waste alkali liquid of methanol-to-olefin, contains a great amount of oil stains, and the oil stains exist in water in four forms: the oil slick comprises floating oil, dispersed oil, emulsified oil and dissolved oil, wherein the floating oil is a main component of oil products in the wastewater and floats on the water surface in a continuous phase to form an oil film or an oil layer; the dispersion particles of the floating oil in the wastewater are large, generally larger than 100 mu m, and the floating oil is easy to separate from the wastewater and floats on the water surface; the dispersed oil is suspended in water in the form of tiny oil drops, is unstable and tends to become floating oil after standing for a period of time, and the particle size of the oil drops is 10-100 mu m; the dispersed particle size of the emulsified oil is very small, generally less than 10 μm, and the majority is 0.1-2 μm, exists in an emulsified state, and is not easy to float upwards and remove from water; the dissolved oil is a particle dispersed oil dissolved in a chemical mode, and the diameter of oil drops is small and can reach several nanometers.
According to the type and characteristics of oil products in the organic waste alkali liquor of the byproduct of preparing olefin from methanol, the inventor further optimizes an oil removing system 2, wherein under the preferable conditions, the oil removing system 2 comprises an oil separation tank 22, a multi-media filter 25, an air flotation tank 26, an oil-water separator 27 and an oil sludge collecting tank 211 which are sequentially communicated, the oil sludge collecting tank 211 is respectively communicated with the oil separation tank 22, the air flotation tank 26 and the oil-water separator 27, and the oil sludge collecting tank 211 is also communicated with a sludge treatment system 5 and is used for further treating the collected oil sludge.
The oil separation tank can remove oil particles (floating oil or emulsified oil after demulsification) with the particle size of more than 60 mu m and solid particles. More preferably, the oil separator 22 is configured to perform primary oil-water separation on the organic waste lye, and send the obtained oil phase to the sludge collection tank 211, and the oil separator 22 can utilize the density difference of oil and water to make the oil phase float on the water phase under the action of gravity.
Further preferably, in order to further improve the oil-water separation effect, under an optimal condition, an oil collector 24 is further disposed in the oil separation tank 22 and is used for collecting and conveying the oil phase, the type of the oil collector 24 may be known to those skilled in the art, for example, the oil collector may be a storage tank, a drainage pipeline is disposed at the bottom of the storage tank, the bottom of the storage tank is sampled and analyzed, and if the water content is high, a drainage valve may be opened to drain water, so as to ensure the purity of the oil product.
Further preferably, the multi-media filter 25 is configured to perform secondary oil-water separation on the water phase obtained by the primary oil-water separation, and a medium layer disposed in the multi-media filter 25 is capable of filtering and adsorbing the emulsified oil and the dissolved oil, so as to remove the oil substances from the water.
In some preferred embodiments of the present invention, N media layers are disposed in the multi-media filter 25, and from bottom to top, a first media layer, a second media layer … …, an N-1 media layer and an N media layer are sequentially disposed, where N is greater than or equal to 2, and the filler in each media layer is independently selected from at least one of quartz sand, anthracite and activated carbon.
Further preferably, 3 medium layers, namely a first medium layer, a second medium layer and a third medium layer, are arranged in the multi-medium filter 25; preferably, the first medium layer is filled with quartz sand, the particle size of the quartz sand is 0.4-0.65mm, and the height of the first medium layer is 300-500 mm; preferably, anthracite is filled in the second medium layer, the particle size of the anthracite is 0.8-1.4mm, and the height of the second medium layer is 400-600 mm; preferably, the third medium layer is filled with activated carbon, the particle size of the activated carbon is 2-3mm, and the height of the third medium layer is 400-600 mm.
In some preferred embodiments of the present invention, the flotation tank 26 is configured to perform tertiary oil-water separation on the aqueous phase obtained by the secondary oil-water separation, send the obtained oil phase into the sludge collection tank 211, adsorb a large amount of micro-bubbles on the particles (oil droplets) to be removed, and take the oil substances (emulsified oil, partially dissolved oil and suspended substances) out of the water surface by using its own buoyancy, so as to achieve the purpose of oil-water separation.
According to the utility model, under the preferable conditions, the treatment device further comprises an aeration gas source 6 communicated with the air flotation tank 26 and used for aerating the air flotation tank 26; preferably, the aeration gas source 6 includes carbon dioxide, for example, carbon dioxide gas produced by factory can be used as a gas source, the carbon dioxide can not only realize the aeration effect, but also perform an acid-base neutralization reaction on the aqueous solution of the carbon dioxide and alkaline organic waste alkali solution, so as to reduce the pH of the waste alkali solution, and facilitate the subsequent treatment of the organic waste alkali solution.
In order to further improve the treatment effect of the flotation tank 26, under the preferable conditions, the mixed solution of coagulant and coagulant aid is filled in the flotation tank, so that the coagulation and flocculation effects are increased, and the removal rate of emulsified oil, partially dissolved oil and SS (suspended solids) in the organic waste alkali liquor can be improved.
According to the present invention, under preferable conditions, the oil-water separator 27 is configured to perform oil-water separation for four times on the water phase obtained by the oil-water separation for three times, and send the obtained oil phase to the sludge collection tank 211; further preferably, an oil collecting region 28 is provided above the oil-water separator 27, and the oil collecting region 28 communicates with the sludge collecting tank 211, and is capable of collecting an oil phase obtained by four times of oil-water separation and sending the oil phase to the sludge collecting tank 211.
The oil-water separator 27 can further remove various oil substances remaining in the organic waste lye, the type of the oil-water separator 27 can be known to those skilled in the art, and the description of the utility model is omitted here.
In some preferred embodiments of the present invention, the oil removing system 2 further comprises an intermediate water tank 23, wherein the intermediate water tank 23 is communicated with the oil separation tank 22 and the multi-media filter 25, and is used for collecting the water phase obtained by the primary oil-water separation and introducing the water phase into the multi-media filter 25 for secondary oil-water separation; preferably, the oil removing system 2 further comprises a water collecting tank 29, and the water collecting tank 29 is communicated with the oil-water separator 27 and the oxidation system 3, and is used for collecting a water phase obtained by four times of oil-water separation and introducing the water phase into the oxidation system 3 for oxidation treatment.
According to the utility model, after the processing device operates for a period of time, a large amount of oil substances can be trapped in the multi-medium filter 25, and the multi-medium filter 25 is washed to avoid the blockage of the multi-medium filter 25. Preferably, the sump 29 is in communication with the top end of the multimedia filter 25 for introducing the aqueous phase in the sump 29 into the multimedia filter 25 to flush the multimedia filter 25; the bottom end of the multimedia filter 25 is communicated with the conveying pipeline 1 and is used for introducing the washing water obtained by washing into the conveying pipeline 1.
According to the utility model, after the sewage treated by the oil removal system 2 enters the oxidation system 3, under the action of the catalyst, the pollutants such as COD, sulfide, ammonia, cyanogen and the like in the high-concentration organic wastewater are subjected to catalytic oxidation decomposition by using air (oxygen) so as to be converted into CO2、SO4 2-、N2And water and other harmless components, and simultaneously performing deodorization, decolorization, sterilization and disinfection to achieve the aim of purifying and treating wastewater, reduce the content of organic matters in the waste alkali liquor and improve the biodegradability of the waste alkali liquor. Preferably, the oxidation system includes an oxidation column and a catalyst disposed within the oxidation column.
Preferably, the catalyst is a noble metal catalyst, for example, a noble metal catalyst whose composition contains platinum. Further preferably, the catalytic oxidative decomposition conditions are: the reaction temperature is 220 ℃ and 320 ℃, the pressure is 0.8-10MPa, and the contact reaction time is 8-110 min.
The catalytic oxidative decomposition using noble metal catalysts has the following advantages: (1) the removal rate of pollutants is high: CODCr≥80％、NH3-N≥75％，CODcrAdopts potassium dichromate (K)2Cr2O7) Chemical oxygen demand, i.e. dichromate index, measured as oxidant; NH (NH)3N is an index of ammonia nitrogen content in water (wastewater); (2) no sludge is produced; (3) floor spaceThe area is small, about 10% -20% of that of the conventional biological method; (4) the catalyst has strong alkali resistance, so that the effective life of the catalyst is ensured; (5) the catalyst has good catalytic reaction effect, the butter is decomposed through rapid catalytic reaction after being wrapped by the butter, and the catalyst can play a role for a long time and cannot be wrapped by the butter; (6) the catalytic reaction is carried out under relatively low pressure and temperature, so that the energy is saved, and the operation safety and stability are higher; (7) strong catalytic activity and long service life.
In some preferred embodiments of the present invention, in order to further remove hardness and part of suspended matters in the organic waste lye, preferably, the sedimentation system 4 comprises a sedimentation tank, wherein the sedimentation tank contains a mixed solution for chemically removing hardness from the organic waste lye, and further preferably, the mixed solution is a mixed solution composed of at least one of lime, sodium carbonate, a coagulant and a coagulant aid.
In order to prevent self-reaction, a partition plate 41 is further arranged in the sedimentation tank 4 and used for dividing the sedimentation tank into a first sedimentation area 42 and a second sedimentation area 43, lime is added into the first sedimentation area 42, and soda ash, a coagulant and a coagulant aid are added into the second sedimentation area. Separate lime reaction tank (first settling zone 42) and soda reaction tank (second settling zone 43) are provided to allow lime to react with bicarbonate ions in water first, and then soda reacts with Ca in water2+、Mg2+Reacting to generate a precipitate; the precipitate and colloid in water react with coagulant and coagulant aid to destroy the stability of colloid and further coagulate the precipitate in water, so as to purify water.
Wherein, the main reaction formula is as follows:
Ca(HCO3)2+Ca(OH)2→2CaCO3↓+2H2O
Mg(HCO3)2+Ca(OH)2→CaCO3↓+MgCO3+2H2O
MgCO3+Ca(OH)2→CaCO3↓+Mg(OH)2↓
Na2CO3+CaSO4→CaCO3↓+Na2SO4
Na2CO3+CaCl2→CaCO3↓+2NaCl
Na2CO3+Ca(OH)2→CaCO3↓+2NaOH
R3++3OH-→R(OH)3↓
because the waste alkali liquor has high pH and contains sodium hydroxide and sodium carbonate, part of the added agents (hydrated lime, sodium carbonate and the like) can be replaced in the high-efficiency clarification tank to carry out chemical hardness removal reaction, the adding amount of the hydrated lime and the sodium carbonate is reduced, the cost is reduced, and the pH value of the waste alkali liquor is also reduced.
In some preferred embodiments of the present invention, the treatment apparatus further includes a gasification sewage conveying pipeline 7 disposed between the oxidation system 3 and the precipitation system 4, and configured to input gasification sewage into the precipitation system 4, so as to reduce the pH value of the organic waste lye, and because the gasification sewage contains acidic substances, the gasification sewage is introduced into the organic waste lye, so that the gasification sewage and the organic waste lye can perform an acid-base neutralization reaction, so as to implement treatment of waste with waste, and under preferred conditions, the gasification sewage may be gasification sewage generated after a coal gasification apparatus coal water slurry gasification furnace reacts.
As shown in FIG. 1, the working flow of the organic waste lye treatment device of the present invention is as follows:
the organic waste lye from the conveying pipeline 1 enters an oil separation pool 22, and is subjected to primary oil-water separation under the action of an oil collector 24 and gravity, so that an oil phase (floating oil, emulsified oil after demulsification and solid particles) at the upper layer and a water phase at the lower layer are obtained; the upper oil phase enters an oil sludge collection tank 211, the water phase is pumped into a multi-media filter 25 through an intermediate water tank 23 for secondary oil-water separation, the oil phase (emulsified oil and dissolved oil) obtained by the secondary oil-water separation is retained in the multi-media filter 25, and the water phase enters an air floatation tank 26 for tertiary oil-water separation; an aeration gas source 6 communicated with the air floatation tank 26 provides carbon dioxide gas to the air floatation tank 26, on one hand, the carbon dioxide gas can perform acid-base neutralization reaction with waste alkali liquor to reduce the pH value of the waste alkali liquor, on the other hand, emulsified oil, part of dissolved oil and suspended matters in organic waste alkali liquor float out of the water surface under the action of micro bubbles, an upper oil phase obtained by three-time oil-water separation enters an oil sludge collection tank 211, a lower water phase enters an oil-water separator 27 to perform four-time oil-water separation, an obtained oil phase enters an oil collection area 28 and then is sent into the oil sludge collection tank 211, a water phase enters an oxidation system 3 to be subjected to oxidation treatment, the organic waste alkali liquor after oxidation treatment and gasified sewage from a gasified sewage conveying pipeline 7 are subjected to acid-base neutralization reaction and then are sent into a precipitation system 4 to perform chemical hardness removal, the water phase firstly reacts with lime in a first precipitation area 42 and then enters a second precipitation area 43, further flocculating and precipitating under the action of soda ash, coagulant and coagulant aid;
after the organic waste alkali liquid treatment device runs for a period of time, a large amount of oil substances can be accumulated in the multi-medium filter 25 to cause the multi-medium filter 25 to be stuck, at the moment, the water phase in the water collecting tank 29 is introduced into the multi-medium filter 25 from the top of the multi-medium filter 25 to wash the multi-medium filter 25, and the washing water obtained by washing is introduced into the conveying pipeline 1 to be combined with the organic waste alkali liquid and to be subjected to oil-water separation again.
The present invention will be described in detail below with reference to examples.
In the following examples, CODcrAdopts potassium dichromate (K)2Cr2O7) Chemical oxygen demand, i.e. dichromate index, measured as oxidant; NH (NH)3N is an index of ammonia nitrogen content in water (wastewater); SS is suspended matter in waste water.
Example 1
The organic waste alkali liquor is waste alkali liquor of coal-to-olefin project, and the designed water inflow Q1＝5m3H, water yield Q2＝5m3The design inlet water quality is shown in table 1, and the design outlet water quality is shown in table 2.
The organic waste lye was treated in the organic waste lye treatment device shown in FIG. 1, and the treatment results are shown in Table 3.
TABLE 1
| Item | Numerical value | Item | Numerical value |
| pH | 13-14 | Temperature (. degree.C.) | 40 |
| CODcr(mg/L) | 30000 | SS(mg/L) | 200 |
| NH3-N(mg/L) | ≤200 | BOD5/CODcr | 0.10 |
| Cl-(mg/L) | ≤300 | Total solids content (mg/L) | 50000 |
| Na2CO3(wt％) | 6.0 | NaOH(wt％) | 4.0 |
| Benzene (mg/L) | 50 | Oil (mg/L) | 600 |
| Total cyanide (mg/L) | ≤2 | S2-(mg/L) | ≤20 |
Analysis of organic waste lye
As can be seen from the design of the water quality meter of the inlet water, the pH, oil and COD of the wastewatercrAnd the total solid content is very high, which far exceeds the acceptance capability of sewage biochemical treatment.
The analysis shows that: first, its CODcrThe higher part of the water has a direct relation with the oil content in the water, and the COD can be achieved by removing or reducing the oil content in the watercrThe biochemical range of the system is reduced, but the biochemical level (BOD) of the sewage is increased5/CODcr) Poor, affects the biochemical treatment effect and needs to adopt a proprietary technology to improve the biodegradability. ② Na in homogeneous water with higher pH2CO3And due to the over-high content of NaOH, the water can be fully utilized as an additive (alkali liquor) for adjusting the pH of a small-pollution biochemical unit after other impurities such as oil in the water are removed. And thirdly, the oil content of the waste alkali liquor is high (about 600mg/L), the stable operation of the sewage biochemical treatment device is greatly influenced, pretreatment and oil removal are needed, and the oil content is reduced to be within the acceptable concentration of the biochemical treatment system.
TABLE 2
| Contamination factor | Quality of effluent water |
| COD | / |
| BOD | / |
| SS | ≤50mg/L |
| Ammonia nitrogen | / |
| Oil | ≤20mg/L |
TABLE 3
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the utility model, numerous simple modifications can be made to the technical solution of the utility model, including combinations of the individual specific technical features in any suitable way. The utility model is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (16)
1. The utility model provides a processing apparatus of organic waste lye which characterized in that, including deoiling system (2), oxidation system (3) and the system of deposiing (4) that communicate in proper order for carry out oil-water separation, oxidation and sediment with organic waste lye in proper order.
2. The organic waste lye treatment device according to claim 1, characterized in that the deoiling system (2) comprises an oil separation tank (22), a multi-media filter (25), an air flotation tank (26), an oil-water separator (27) which are connected in turn, and further comprises an oil sludge collection tank (211), wherein the oil sludge collection tank (211) is respectively connected with the oil separation tank (22), the air flotation tank (26) and the oil-water separator (27);
the oil separation tank (22) is used for carrying out primary oil-water separation on the organic waste alkali liquor from the conveying pipeline (1) and conveying the obtained oil phase into the oil sludge collection tank (211);
the multi-medium filter (25) is used for carrying out secondary oil-water separation on the water phase obtained by the primary oil-water separation;
the air floatation tank (26) is used for carrying out tertiary oil-water separation on a water phase obtained by secondary oil-water separation, and sending an obtained oil phase into an oil sludge collection tank (211);
the oil-water separator (27) is used for carrying out oil-water separation on the water phase obtained by the oil-water separation for three times, and sending the obtained oil phase to the oil sludge collecting pool (211).
3. The apparatus for treating organic waste lye of claim 2 wherein an oil collector (24) is provided in the oil interceptor (22) for collecting and transporting the oil phase.
4. The device for treating organic waste lye of claim 2, wherein N medium layers are arranged in the multi-medium filter (25), and the first medium layer, the second medium layer … …, the N-1 th medium layer and the N th medium layer are arranged from bottom to top in sequence, wherein N is not less than 2.
5. The apparatus for treating organic waste lye of claim 4 wherein there are 3 media layers in the multi-media filter (25), from bottom to top in sequence is the first media layer, the second media layer and the third media layer.
6. The apparatus for treating organic waste lye of claim 5, wherein the first medium layer is filled with quartz sand, the particle size of the quartz sand is 0.4-0.65mm, and the height of the first medium layer is 300-500 mm.
7. The apparatus for treating organic waste lye of claim 5, wherein the second medium layer is filled with anthracite, the particle size of the anthracite is 0.8-1.4mm, and the height of the second medium layer is 400-600 mm.
8. The apparatus for treating organic waste lye of claim 5, wherein the third medium layer is filled with activated carbon, the particle size of the activated carbon is 2-3mm, and the height of the third medium layer is 400-600 mm.
9. The apparatus for treating organic waste lye of any one of the claims 2 to 8 wherein the apparatus further comprises an aeration gas source (6) in communication with the flotation tank (26) for aerating the flotation tank (26).
10. The apparatus for treating organic waste lye of claim 9 wherein the source of aeration gas (6) comprises carbon dioxide.
11. The apparatus for treating organic waste lye of any one of the claims 2 to 8 wherein the deoiling system (2) further comprises a collecting tank (29), said collecting tank (29) is connected to the oil-water separator (27) and the oxidation system (3) for collecting the water phase obtained by the four oil-water separations and introducing the water phase into the oxidation system for oxidation treatment.
12. The apparatus for treating organic waste lye of claim 11, wherein the sump (29) is in communication with the top end of the multimedia filter (25) for introducing the aqueous phase in the sump (29) into the multimedia filter (25) for rinsing the multimedia filter (25) to obtain rinse water.
13. The apparatus for treating organic waste lye of claim 12 wherein the bottom end of the multimedia filter (25) communicates with the transport pipe (1) for introducing the rinse water obtained from the rinsing into the transport pipe (1).
14. The apparatus for treating organic waste lye of any of the claims 1 to 8 wherein the oxidation system (3) comprises an oxidation tower and a catalyst arranged inside the oxidation tower.
15. The apparatus for treating organic waste lye of claim 14 wherein the sedimentation system (4) comprises a sedimentation tank containing a mixed solution for chemically de-hardening the organic waste lye.
16. The apparatus for treating organic waste lye of any one of the claims 1 to 8 wherein the apparatus further comprises a transport line (7) for gasified waste water arranged between the oxidation system (3) and the precipitation system (4) for feeding gasified waste water into the precipitation system (4) for lowering the pH value of the organic waste lye.
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| CN202120920907.5U CN215798848U (en) | 2021-04-29 | 2021-04-29 | Organic waste lye treatment device |
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| CN202120920907.5U CN215798848U (en) | 2021-04-29 | 2021-04-29 | Organic waste lye treatment device |
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