High ammonia nitrogen sewage processing method

Abstract

The invention discloses a high ammonia nitrogen sewage processing method, which mainly comprises the following steps: (1) storing and homogenizing the ammonia nitrogen sewage; (2) utilizing the prepared active sludge to biologically degrade COD, BOD and NH3-N pollutants in the sewage; (3) separating sludge from water in the sewage; (4) film separating the sewage. The method has the advantages that: (1) the active sludge prepared in a culture pond has the advantages of easy flocculation, easy block formation and good sedimentation, so the sludge-water separation speed is fast; (2) the preparedactive sludge is utilized to biologically degrade the sewage, so the degradation effect on the ammonia nitrogen, COD and BOD is good; (3) film filtering treatment on the sewage is performed, so the pollutants and partial ion in the sewage can be further removed, the sewage after the film treatment can reach the standard and also can be recycled, the recycling of the resource can be realized, and the water pollution can be reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to a treatment method for high ammonia nitrogen sewage. Background technique [0002] High ammonia nitrogen sewage is a kind of sewage produced by modern industry with higher ammonia nitrogen concentration than municipal sewage. It is generally believed that the ammonia nitrogen concentration is higher than 300mg / l. The ammonia component in high ammonia nitrogen sewage is easy to volatilize and cause ambient air pollution. When conventional biochemical technology is used for treatment, it will inhibit biological bacteria due to excessive ammonia nitrogen content, which will seriously affect the effect of biochemical treatment; when using ammonia stripping process, blowing The degassing effect is unstable, and the blown exhaust gas will pollute the atmospheric environment without secondary treatment; the operation cost of flash evaporation technology is high; the ext...

AI Technical Summary

Problems solved by technology

The ammonia component in high ammonia nitrogen sewage is easy to volatilize and cause ambient air pollution. When conventional biochemical technology is used for treatment, it will inhibit biological bacteria due to excessive ammonia nitrogen content, which will seriously affect the effect of biochemical treatment; when using ammonia stripping process, blowing The degassing effect is unstable, and the blown exhaust gas will pollute the atmospheric environment without secondary treatment; the operation cost of flash evaporation technology is high; the external drainage body will cause eutrophication, which will deteriorate the sensory shape of the water body, thereby reducing the aesthetic value of the water body; and make the water body The normal dissolved oxygen balance is disturbed, which further promotes the deterioration of the water body; reduces the quality of water supply, increases the burden of water treatment, and discharges the water treatment plant so that the water plant cannot operate normally; destroys the ecological balance of the water body and reduces the economic value of the water body

Images