CN216764616U - Ketazine method synthetic hydrazine hydrate evaporation condensate effluent disposal system - Google Patents
Ketazine method synthetic hydrazine hydrate evaporation condensate effluent disposal system Download PDFInfo
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Abstract
The utility model discloses a system for treating wastewater generated in the synthesis of hydrazine hydrate evaporative condensate by a ketazine method, which comprises a multi-element catalytic oxidation tank and a middle water tank, wherein the middle water tank is positioned at one side of the multi-element catalytic oxidation tank, an integrated biochemical tank is arranged at one side of the multi-element catalytic oxidation tank, the integrated biochemical tank comprises a hydrolysis acidification tank, a two-stage A/O tank, a secondary sedimentation tank and a water collecting tank which are sequentially communicated, an integrated advanced treatment system is arranged at the rear part of the integrated biochemical tank, the integrated advanced treatment system comprises an ozone oxidation tank, a BAF tank and a multi-medium filter which are sequentially communicated, and a pipe gallery is arranged at one side of the BAF tank. The utility model combines the pre-physicochemical treatment, the biological treatment and the post-physicochemical treatment, effectively reduces the investment cost and the operating cost, has strong impact load resistance of the system, stable treatment effect, convenient operation and management and flexible operation, and effectively solves the problems of high concentration of pollutants in the wastewater produced by hydrazine hydrate and strong biological toxicity.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a wastewater treatment system for synthesizing hydrazine hydrate evaporation condensate by a ketazine method.
Background
With the development of industrial production and the prosperity of social economy in China, a large amount of industrial wastewater and domestic sewage are discharged into water bodies, the water body pollution is increasingly serious, and the prevention and treatment of the water body pollution, especially the treatment of the industrial sewage becomes a hot topic in recent years. The industrial sewage generally has the characteristics of high pollutant concentration, complex composition, difficult biodegradation, high treatment difficulty and the like, the sewage treatment process adopting single physicochemical, biochemical and the like is difficult to reach the discharge standard, at present, a plurality of industrial sewage are provided to be searched for proper treatment methods, and the hydrazine hydrate production wastewater is one of the industrial sewage.
Hydrazine hydrate is an important raw material and an intermediate of fine chemical products, and the synthesis method mainly comprises a Raschig method, a urea method, a ketazine method, a hydrogen peroxide method and the like. Among them, the ketazine process is widely used at home and abroad because of its advantages of low investment, high product yield, low energy consumption, low cost, etc. The ketazine method takes acetone, synthetic ammonia and sodium hypochlorite as production raw materials, the ketazine is generated through reaction, and hydrazine hydrate is obtained after the ketazine is hydrolyzed. Production wastewater with high salt content and complex pollutant components is generated in the production process of hydrazine hydrate synthesized by the ketazine method, and aiming at the production wastewater, a plurality of effect evaporators are adopted by some domestic enterprises to treat the production wastewater, so that a high-purity industrial sodium chloride byproduct can be effectively recovered. However, a large amount of organic matters such as hydrazine, acetone, acetonitril, other derivatives and the like still exist in the evaporation condensate, the pollutant components are complex, the biotoxicity is strong, the COD concentration is high, and the environment is seriously polluted if the pollutant components are directly discharged.
At present, the research and practice of treating the hydrazine hydrate production wastewater by using a nanofiltration membrane process is in China, but the application of the traditional biochemical treatment process is very few, and the physicochemical treatment process such as a nanofiltration membrane is adopted, so that the defects of high investment cost, high operation cost, unstable operation and the like exist, if a sewage treatment process with low investment, low cost and stable operation can be developed to treat the condensate evaporated by a multi-effect evaporator of an enterprise, the production cost of the enterprise can be greatly reduced, and the influence of industrial sewage on the environment can be effectively reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of related products in the prior art, the utility model provides a hydrazine hydrate evaporation condensate wastewater treatment system synthesized by a ketazine method.
The utility model provides a treatment system for evaporation condensate wastewater generated in hydrazine hydrate synthesis by a ketazine method, which comprises the following steps: the device comprises a multi-element catalytic oxidation tank and a middle water tank, wherein the middle water tank is positioned on one side of the multi-element catalytic oxidation tank, an integrated biochemical tank is arranged on one side of the multi-element catalytic oxidation tank and comprises a hydrolysis acidification tank, a two-stage A/O (anoxic/oxic) tank, a secondary sedimentation tank and a water collecting tank which are sequentially communicated, an integrated advanced treatment system is arranged behind the integrated biochemical tank and comprises an ozone oxidation tank, a BAF (biological aerated Filter) tank and a multi-media filter which are sequentially communicated, a pipe gallery is arranged on one side of the BAF tank, and a clean water tank and a backwashing wastewater collecting tank are sequentially communicated behind the integrated advanced treatment system;
the inside of the multi-element catalytic oxidation tank is filled with high-efficiency catalytic filler, and the bottom of the multi-element catalytic oxidation tank is provided with an ozone aerator A; a lifting pump A is arranged between the middle water tank and the hydrolysis acidification tank, the hydrolysis acidification tank is provided with a water distribution system, and an outlet of the lifting pump A is connected to the water distribution system;
the two-stage A/O pool consists of an aerobic O pool and an anoxic A pool, wherein the bottom and the top of the aerobic O pool are respectively provided with a microporous aerator and a mixed liquid reflux system, the aerobic O pool is internally provided with biological fillers, the anoxic A pool is internally provided with a stirrer, and an outlet of the mixed liquid reflux system is connected to a water inlet end of the anoxic A pool;
the secondary sedimentation tank is provided with a sedimentation tank suction dredge and is connected with a sludge reflux pump, and the sludge reflux pump is respectively communicated with the hydrolysis acidification tank and the two-stage A/O tank; a lifting pump B is arranged between the water collecting tank and the ozone oxidation tank, and the outlet of the lifting pump B is connected to the ozone oxidation tank; an ozone aerator B is arranged at the bottom of the ozone oxidation tank;
a pipe gallery is arranged on one side of the BAF pool, and a plurality of groups of aeration fans are arranged in the pipe gallery; the BAF pool 8 is internally provided with filter bricks, a supporting layer and filter materials from bottom to top in sequence, and the BAF pool and the clean water pool are communicated with each other through pipelines; the clean water tank is provided with a lifting pump C, the outlet of the lifting pump C is connected to the water inlet of the multi-media filter, the multi-media filter is provided with a back washing water pump A, the inlet end of the back washing water pump A is connected to the clean water tank, and the outlet end of the back washing water pump A is connected to the back washing water inlet interface of the multi-media filter; the back washing drainage interface of the multi-media filter is connected to the back washing wastewater collecting tank; the clean water tank is provided with a back washing water pump B, the inlet end of the back washing water pump B is connected to the clean water tank, and the outlet end of the back washing water pump B is connected to the BAF tank; the BAF tank backwashing wastewater is communicated to a backwashing wastewater collection tank; the back flush wastewater collection pool is provided with a submersible sewage pump, and an outlet of the submersible sewage pump is connected to the multielement catalytic oxidation pool.
In certain embodiments of the utility model, the high-efficiency catalytic filler filled in the multi-element catalytic oxidation tank is a catalyst suitable for catalytic oxidation of ozone in a fixed bed mode, and the filling height of the high-efficiency catalytic filler is 1/3 of the height of the multi-element catalytic oxidation tank body.
In certain embodiments of the present invention, the hydraulic retention time of the multi-element catalytic oxidation pond is 1.5h, and hydrogen peroxide is added.
In certain embodiments of the utility model, the hydraulic retention time of the hydrolytic acidification tank is 20 hours.
In certain embodiments of the utility model, the residence time of the two-stage a/O cell in the first stage anoxic a cell is 12h, the residence time of the first stage aerobic O cell is 36h, the residence time of the second stage anoxic a cell is 8h, the residence time of the second stage aerobic O cell is 16h, the packing filling ratio of the aerobic O cell is 60%, the COD volume load is 0.07kgCOD/(m3.d), and the denitrification load is 0.024kg (NO 3-N)/(kgMLSS. d).
In certain embodiments of the utility model, the hydraulic retention time of the ozonation cell is 1.5 hours.
In certain embodiments of the utility model, the BAF pond residence time is 2.4 hours and the filtration rate is 1.25 m/h.
In certain embodiments of the utility model, the multimedia filter filtration rate is 8 m/h.
Compared with the prior art, the utility model has the following advantages:
compared with the prior art, the method has the advantages that the method adopts the combination of physicochemical treatment, biological treatment and post-physicochemical treatment, so that the investment cost and the operating cost are effectively reduced, the system has strong impact load resistance, the treatment effect is stable, the operation and the management are convenient, and the operation is flexible; the system effectively solves the problems of high concentration of the hydrazine hydrate production wastewater pollutants and strong biological toxicity, and the removal rates of main pollutants COD and NH3-N, TN can respectively reach 95%, 97% and 92%.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the principle structure of a wastewater treatment system for synthesizing hydrazine hydrate evaporation condensate by a ketazine method.
Description of reference numerals:
1. a multi-element catalytic oxidation tank; 2. a middle water tank; 3. a hydrolysis acidification pool; 4. a two-stage A/O pool; 5. a secondary sedimentation tank; 6. a water collecting tank; 7. an ozone oxidation tank; 8. a BAF pool; 9. among the pipe galleries; 10. a multi-media filter; 11. a clean water tank; 12. backwashing a wastewater collection tank; 13. high-efficiency catalytic packing; 14. an ozone aerator A; 15. a lift pump A; 16. a water distribution system; 17. biological stuffing; 18. a microporous aerator; 19. a mixed liquor reflux system; 20. a blender; 21. a sedimentation tank suction dredger; 22. a sludge reflux pump; 23. a lift pump B; 24. an ozone aerator B; 25. an aeration fan; 26. filtering bricks; 27. filtering the material; 28. a support layer; 29. Backwashing the water pump A; 30. backwashing the water pump B; 31. a lift pump C; 32. a submersible sewage pump.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely illustrative of some, but not all, of the embodiments of the utility model, and that the preferred embodiments of the utility model are shown in the drawings. This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present disclosure is set forth in order to provide a more thorough understanding thereof.
Referring to fig. 1, the system for treating wastewater from hydrazine hydrate evaporation condensate synthesis by ketazine method comprises a multi-element catalytic oxidation tank 1 and an intermediate tank 2, wherein the intermediate tank 2 is positioned at one side of the multi-element catalytic oxidation tank 1, an integrated biochemical tank is arranged at one side of the multi-element catalytic oxidation tank 1, the integrated biochemical tank comprises a hydrolysis acidification tank 3, a two-stage A/O tank 4, a secondary sedimentation tank 5 and a water collecting tank 6 which are sequentially communicated, an integrated advanced treatment system is arranged at the rear of the integrated biochemical tank, the integrated advanced treatment system comprises an ozone oxidation tank 7, a BAF tank 8 and a multi-media filter 10 which are sequentially communicated, a pipe gallery 9 is arranged at one side of the BAF tank 8, and a clean water tank 11 and a backwashing wastewater collecting tank 12 are sequentially communicated and arranged at the rear of the integrated advanced treatment system;
the inside of the multi-element catalytic oxidation tank 1 is filled with high-efficiency catalytic fillers 13, and the bottom of the multi-element catalytic oxidation tank is provided with an ozone aerator A14; a lift pump A15 is arranged between the intermediate water tank 2 and the hydrolysis acidification tank 3, the hydrolysis acidification tank 3 is provided with a water distribution system 16, and the outlet of the lift pump A15 is connected to the water distribution system 16;
the two-stage A/O pool 4 consists of an aerobic O pool and an anoxic A pool, wherein the bottom and the top of the aerobic O pool are respectively provided with a microporous aerator 18 and a mixed liquid reflux system 19, the aerobic O pool is internally provided with biological fillers 17, the anoxic A pool is internally provided with a stirrer 20, and the outlet of the mixed liquid reflux system 19 is connected to the water inlet end of the anoxic A pool;
the secondary sedimentation tank 5 is provided with a sedimentation tank suction dredge 21 and is connected with a sludge return pump 22, and the sludge return pump 22 is respectively communicated with the hydrolysis acidification tank 3 and the two-stage A/O tank 4; a lifting pump B23 is arranged between the water collecting tank 6 and the ozone oxidation tank 7, and the outlet of a lifting pump B23 is connected to the ozone oxidation tank 7; an ozone aerator B24 is arranged at the bottom of the ozone oxidation tank 7;
a pipe gallery 9 is arranged on one side of the BAF pool 8, and a plurality of groups of aeration fans 25 are arranged in the pipe gallery 9; the BAF pool 8 is internally provided with a filter brick 26, a supporting layer 28 and a filter material 27 from bottom to top in sequence, and the BAF pool 8 and the clean water pool 11 are communicated with each other through pipelines; the clean water tank 11 is provided with a lifting pump C31, the outlet of the lifting pump C31 is connected with the water inlet of the multi-media filter 10, the multi-media filter 10 is provided with a back flush water pump A29, the inlet end of the back flush water pump A29 is connected to the clean water tank 11, and the outlet end of the back flush water pump A29 is connected with the back flush water inlet interface of the multi-media filter 10; the back flush drainage interface of the multi-media filter 10 is connected to a back flush wastewater collection tank 12; the clean water tank 11 is provided with a back flush water pump B30, the inlet end of the back flush water pump B30 is connected to the clean water tank 11, and the outlet end of the back flush water pump B30 is connected to the BAF tank 8; the BAF tank 8 is communicated with a backwashing wastewater collection tank 12; the backwashing wastewater collection tank 12 is provided with a submersible sewage pump 32, and the outlet of the submersible sewage pump 32 is connected to the multi-element catalytic oxidation tank 1.
The high-efficiency catalytic filler 13 filled in the multi-element catalytic oxidation tank 1 is a catalyst suitable for catalytic oxidation of ozone in a fixed bed form, a porous composite material is used as a carrier, a plurality of noble metals, rare earth metal oxides and transition metal oxides are used as catalytic components, and the catalyst is prepared by carrier doping, extrusion forming, mixed impregnation, high-temperature roasting and other processes. The filling height of the high-efficiency catalytic filler 13 is 1/3 of the height of the multi-element catalytic oxidation tank 1.
The hydraulic retention time of the multi-element catalytic oxidation tank 1 is 1.5h, and hydrogen peroxide is added into the tank in a proper proportion according to the water quality condition.
The hydraulic retention time of the hydrolysis acidification tank 3 is 20 h.
The residence time of the two-stage A/O pool 4 in the first-stage anoxic A pool is 12h, the residence time of the first-stage aerobic O pool is 36h, the residence time of the second-stage anoxic A pool is 8h, the residence time of the second-stage aerobic O pool is 16h, the filling rate of the aerobic O pool is 60%, the COD volume load is 0.07kgCOD/(m3.d), and the denitrification load is 0.024kg (NO 3-N)/(kgMLSS. d).
The hydraulic retention time of the ozone oxidation pond 7 is 1.5 h.
The residence time of the empty BAF tank 8 is 2.4h, and the filtration speed is 1.25 m/h.
The filtering rate of the multi-medium filter 10 is 8 m/h.
The specific working process of the system for treating the hydrazine hydrate evaporation condensate wastewater by the ketazine method provided by the embodiment of the utility model is as follows:
the condensate wastewater is lifted to a multi-element catalytic oxidation tank 1 through a pressure conveying pipeline, organic matters and total hydrazine in the wastewater are decomposed through the strong oxidation effect of ozone and hydrogen peroxide and the catalytic effect of an efficient catalytic filler 13, the total nitrogen and ammonia nitrogen in the wastewater are removed, and the biotoxicity of the wastewater is reduced. The effluent of the multi-element catalytic oxidation tank 1 automatically flows into the intermediate water tank 2, and the wastewater is lifted to the hydrolysis acidification tank 3 by a lifting pump A15 of the intermediate water tank 2.
The hydrolysis acidification tank 3 utilizes the first two stages of the anaerobic process to reduce the biological inhibition and improve the biodegradability of the wastewater. The effluent of the hydrolysis acidification tank 3 is collected by a water outlet groove and then automatically flows into the two-stage AO biochemical tank 4. Wherein the aerobic O tank adopts a biological contact oxidation tank, the contact area of microorganisms is increased by hanging combined fillers, the number of the microorganisms is increased, and the treatment effect is improved. The two-stage AO pool thoroughly degrades most organic matters into CO2 and H2O; meanwhile, NO3-N is converted into nitrogen under the action of denitrifying bacteria, so that the aim of denitrification is fulfilled.
And the effluent of the second-stage aerobic O tank automatically flows into a secondary sedimentation tank 5, and the sludge and the water are separated. Supernatant in the secondary sedimentation tank 5 automatically flows into a water collecting tank 6, effluent is lifted to an ozone oxidation tank 7 through a lifting pump B23, and partial sludge at the bottom returns to the hydrolysis acidification tank 3 and the two-stage A tanks to supplement lost sludge; and a part of residual sludge enters a plant area sludge treatment system. The sewage is further oxidized by the organic matters which are difficult to degrade in the wastewater through the ozone oxidation tank 7, and the wastewater flows to the BAF tank 8 automatically after the biodegradability of the wastewater is improved. The sewage is treated by aerobic microorganisms in the BAF tank 8 to remove small molecular organic pollutants in the wastewater again, and the water produced by the BAF tank 8 enters a clean water tank 11.
The sewage in the clean water tank 11 is raised to the multimedia filter 10. Tiny suspended matters in the wastewater are intercepted by the filter material, so that the wastewater can reach the standard of reuse water, or is discharged after advanced treatment.
It should be noted that, the utility model can be configured with corresponding medicine supplementary device and instrument according to the actual water quality and engineering requirements. And all the components described in the present invention are common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimental methods.
Compared with the prior art, the system adopts the combination of physicochemical treatment, biological treatment and physicochemical treatment, effectively reduces the investment cost and the operating cost, has strong impact load resistance, stable treatment effect, convenient operation and management and flexible operation; the system effectively solves the problems of high concentration of the hydrazine hydrate production wastewater pollutants and strong biological toxicity, and the removal rates of main pollutants COD and NH3-N, TN can respectively reach 95%, 97% and 92%.
Those not described in detail in this specification are within the skill of the art. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent changes may be made in some of the features of the embodiments. All equivalent structures made by using the contents of the specification and the attached drawings of the utility model can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the utility model.
Claims (8)
1. A ketazine method is synthesized hydrazine hydrate evaporation condensate effluent disposal system which characterized in that includes: the device comprises a multi-element catalytic oxidation tank (1) and a middle water tank (2), wherein the middle water tank (2) is positioned on one side of the multi-element catalytic oxidation tank (1), an integrated biochemical tank is arranged on one side of the multi-element catalytic oxidation tank (1), the integrated biochemical tank comprises a hydrolysis acidification tank (3), a two-stage A/O (anoxic/oxic) tank (4), a secondary sedimentation tank (5) and a water collecting tank (6) which are sequentially communicated, an integrated advanced treatment system is arranged behind the integrated biochemical tank, the integrated advanced treatment system comprises an ozone oxidation tank (7), a BAF (biological aerated filter) tank (8) and a multi-media filter (10) which are sequentially communicated, a pipe gallery (9) is arranged on one side of the BAF tank (8), and a clean water tank (11) and a backwashing wastewater collecting tank (12) are sequentially communicated behind the integrated advanced treatment system;
the inside of the multi-element catalytic oxidation tank (1) is filled with high-efficiency catalytic fillers (13), and the bottom of the multi-element catalytic oxidation tank is provided with an ozone aerator A (14); a lift pump A (15) is arranged between the intermediate water tank (2) and the hydrolysis acidification tank (3), the hydrolysis acidification tank (3) is provided with a water distribution system (16), and an outlet of the lift pump A (15) is connected to the water distribution system (16);
the two-stage A/O pool (4) consists of an aerobic O pool and an anoxic A pool, wherein the bottom and the top of the aerobic O pool are respectively provided with a microporous aerator (18) and a mixed liquid reflux system (19), the aerobic O pool is internally provided with a biological filler (17), the anoxic A pool is internally provided with a stirrer (20), and an outlet of the mixed liquid reflux system (19) is connected to a water inlet end of the anoxic A pool;
the secondary sedimentation tank (5) is provided with a sedimentation tank suction dredge (21) and is connected with a sludge return pump (22), and the sludge return pump (22) is respectively communicated with the hydrolysis acidification tank (3) and the two-stage A/O tank (4); a lifting pump B (23) is arranged between the water collecting tank (6) and the ozone oxidation tank (7), and the outlet of the lifting pump B (23) is connected to the ozone oxidation tank (7); an ozone aerator B (24) is arranged at the bottom of the ozone oxidation tank (7);
a pipe gallery (9) is arranged on one side of the BAF pool (8), and a plurality of groups of aeration fans (25) are arranged in the pipe gallery (9); the BAF pool (8)8 is internally provided with filter bricks (26), a bearing layer (28) and filter materials (27) from bottom to top in sequence, and the BAF pool (8) and the clean water pool (11) are communicated with each other through pipelines; the clean water tank (11) is provided with a lifting pump C (31), the outlet of the lifting pump C (31) is connected with the water inlet of the multi-media filter (10), the multi-media filter (10) is provided with a back washing water pump A (29), the inlet end of the back washing water pump A (29) is connected to the clean water tank (11), and the outlet end of the back washing water pump A (29) is connected with the back washing water inlet interface of the multi-media filter (10); the back flush drainage interface of the multi-media filter (10) is connected to a back flush wastewater collection pool (12); the clean water tank (11) is provided with a back flush water pump B (30), the inlet end of the back flush water pump B (30) is connected to the clean water tank (11), and the outlet end of the back flush water pump B (30) is connected to the BAF tank (8); the BAF tank (8) is communicated with a backwash wastewater collection tank (12) through backwash wastewater; the backwashing wastewater collection tank (12) is provided with a submersible sewage pump (32), and the outlet of the submersible sewage pump (32) is connected to the multi-element catalytic oxidation tank (1).
2. The system for treating wastewater from evaporation and condensation of hydrazine hydrate synthesized by ketazine method as claimed in claim 1, wherein: the high-efficiency catalytic filler (13) filled in the multi-element catalytic oxidation tank (1) is a catalyst suitable for catalytic oxidation of ozone in a fixed bed form, and the filling height of the high-efficiency catalytic filler (13) is 1/3 of the height of the tank body of the multi-element catalytic oxidation tank (1).
3. The system for treating wastewater from evaporation and condensation of hydrazine hydrate synthesized by ketazine method as claimed in claim 1, wherein: the hydraulic retention time of the multi-element catalytic oxidation tank (1) is 1.5h, and hydrogen peroxide is added.
4. The system for treating wastewater from evaporation and condensation of hydrazine hydrate synthesized by ketazine method as claimed in claim 1, wherein: the hydraulic retention time of the hydrolysis acidification tank (3) is 20 h.
5. The system for treating wastewater from evaporation and condensation of hydrazine hydrate synthesized by ketazine method as claimed in claim 1, wherein: the residence time of the two-stage A/O pool (4) in the first-stage anoxic A pool is 12h, the residence time of the first-stage aerobic O pool is 36h, the residence time of the second-stage anoxic A pool is 8h, the residence time of the second-stage aerobic O pool is 16h, the filling rate of the aerobic O pool is 60%, the COD volume load is 0.07kgCOD/(m3.d), and the denitrification load is 0.024kg (NO 3-N)/(kgMLSS. d).
6. The system for treating wastewater from evaporation and condensation of hydrazine hydrate synthesized by ketazine method as claimed in claim 1, wherein: the hydraulic retention time of the ozone oxidation pond (7) is 1.5 h.
7. The system for treating wastewater from evaporation and condensation of hydrazine hydrate synthesized by ketazine method as claimed in claim 1, wherein: the retention time of the empty BAF pool (8) is 2.4h, and the filtration speed is 1.25 m/h.
8. The system for treating wastewater from evaporation and condensation of hydrazine hydrate synthesized by ketazine method as claimed in claim 1, wherein: the filtering rate of the multi-medium filter (10) is 8 m/h.
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| CN202122842295.5U CN216764616U (en) | 2021-11-19 | 2021-11-19 | Ketazine method synthetic hydrazine hydrate evaporation condensate effluent disposal system |
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| CN202122842295.5U CN216764616U (en) | 2021-11-19 | 2021-11-19 | Ketazine method synthetic hydrazine hydrate evaporation condensate effluent disposal system |
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