Method for treating wastewater generated by cyclohexanone ammoximation process
A cyclohexanone ammonia oxime and wastewater treatment technology, which is applied in biological water/sewage treatment, oxidized water/sewage treatment, natural water treatment, etc., can solve the problem of affecting the treatment effect of sewage treatment, the decline of biochemical treatment performance, and the increase of organic matter content, etc. problems, to achieve the effect of low cost of treatment, strong ability to cause secondary pollution, and water quality impact
Examples
Embodiment 1
[0028] Using hydrogen peroxide + Fe 2+ +SBR treatment of ammonia oximation process wastewater. The operating conditions are determined as follows: the influent pH value is 4, the catalyst Fe 2+ The dosage is 10mol / L, H 2 o 2 The dosage is 450mg / L, the residence time of the wastewater in the reactor is 20 minutes, the pH value of the water entering the flocculation tank is adjusted to 7, the residence time of the wastewater in the flocculation tank is 2 hours, and the wastewater enters the SBR system after flocculation and settlement. The specific composition of the SBR system is three volumes of 100m 3 For the biochemical pool, the process conditions are 0.5 hours of water intake, 3.5 hours of aeration, 1 hour of sedimentation, 1 hour of drainage, and 2 hours of idle time. The water quality indicators of wastewater before and after treatment are shown in Table 1.
[0029] It can be seen from the data in Table 1 that the COD and ammonia nitrogen content of the wastewater a...
Embodiment 2
[0033] Ozone + SBR was used to treat wastewater from ammonia oximation process. The operating conditions are determined as follows: the pH value of the influent water is 5, the dosage of ozone is 200mg / L, the residence time of the wastewater in the reactor is 10 minutes, the wastewater enters the SBR system after the reaction, the pH value of the influent water is controlled to 7, and the specific composition of the SBR system 150m for 2 volumes 3 For the biochemical pool, the process conditions are 0.25 hours of water intake, 3 hours of aeration, 0.5 hours of sedimentation, 0.75 hours of drainage, and 1.5 hours of idle time. The water quality indicators of the wastewater before and after the reaction are shown in Table 2.
[0034] It can be seen from the data in Table 2 that the COD and ammonia nitrogen content of the wastewater are greatly reduced after treatment, and the COD and ammonia nitrogen indicators in the wastewater meet the discharge requirements.
[0035] Table ...
Embodiment 3
[0038] Using chlorine dioxide + Fe 2+ +SBR treatment of ammonia oximation process wastewater. The operating conditions are determined as follows: the influent pH value is 3, the catalyst Fe 2+ The dosage is 15mol / L, ClO 2The dosage is 400mg / L, the residence time of the wastewater in the reactor is 30 minutes, the pH value of the water entering the flocculation tank is adjusted to 6.5, the residence time of the wastewater in the flocculation tank is 2 hours, and the wastewater enters the SBR system after flocculation and settlement. The specific composition of the SBR system is three volumes of 100m 3 For the biochemical pool, the process conditions are 0.5 hours of water inflow, 3 hours of aeration, 1 hour of sedimentation, 1.5 hours of drainage, and 2 hours of idle time. The water quality indicators of the wastewater before and after the reaction are shown in Table 3.
[0039] Table 3 Chlorine dioxide + Fe 2+ +SBR treats waste water quality data
[0040] water ...
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Description
Claims
Application Information
- IPC
- C02F9/14; C02F1/72; C02F3/12; C02F103/36
- CPC
- Y02W10/10
- Inventors
- 高峰; 桑军强