Treatment method for crotonaldehyde production wastewater

Abstract

The invention discloses a treatment method for crotonaldehyde production wastewater. The method comprises the following specific steps: s1, after a water surface in a crotonaldehyde production wastewater storage tank achieves a certain level, the sewage is conveyed to an oil separator; s2, a valve at the bottom of the oil separator is opened once every two hours, and oil is discharged into a sludge concentration tank; s3, water flowing out from the oil separator enters an alkali regulating tank in a primary sedimentation tank system; s4, the sewage treated in the alkali regulating tank entersa flocculation sedimentation tank; s5, the water flow treated in the flocculation sedimentation tank enters a primary sedimentation tank; s6, the water treated by a high-frequency electrolytic cell enters an alkali liquor tank; s7, the water treated in the alkali liquor tank enters a dosing tank; s8, water flowing out from the dosing tank is adjusted to automatically flow into a secondary sedimentation tank; s9, oil discharged by the oil separator, sludge discharged by the primary sedimentation tank, and sludge discharged by the secondary sedimentation tank enter the sludge concentration tank;and S10, the filtrate obtained after filter pressing enters a filtrate tank. After the crotonaldehyde production wastewater is treated by the method, the content of oxygen in the treated crotonaldehyde production wastewater is low.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a method for treating crotonaldehyde wastewater. Background technique [0002] Sorbic acid is an internationally recognized high-efficiency, non-toxic and safe food additive, which is produced from crotonaldehyde and ketene. Crotonaldehyde produces a large amount of wastewater in the production process. This wastewater is high-concentration organic wastewater that is difficult to biodegrade. If it is discharged directly, it will cause serious pollution to the environment and pose a serious threat to organisms and humans. Therefore, effective treatment of organic wastewater containing crotonaldehyde has far-reaching environmental and social benefits. [0003] Common treatment methods for organic wastewater include: physical methods, biological methods and chemical methods (such as advanced oxidation, wet oxidation, incineration). Organic waste liquid has high pollutant concentra...

AI Technical Summary

Problems solved by technology

Organic waste liquid has high pollutant concentration, complex components and poor biochemical properties, and the pollutants often cannot be controlled by separate physical, biological and oxidation treatment methods

If crotonaldehyde wastewater is incinerated, the treatment effect is better, but the equipment investment and operating costs are extremely high

The existing crotonaldehyde wastewater treatment method has poor treatment effect and cannot achieve the expected effect

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