Breeding sewage treatment technology

Abstract

The invention relates to a breeding sewage treatment technology. The breeding sewage treatment technology comprises the following steps that 1, sewage drained from a breeding farm is collected through a hoisting shaft; 2, filtering is conducted; 3, anaerobic fermentation is conducted; 4, an ammoxidation reaction is conducted for 1 day to 2 days to decrease the ammonium nitrogen concentration in the sewage; 5, an aerobic reaction is conducted for 1 day to 2 days at the temperature of 15 DEG C to 25 DEG C, and COD and ammonium nitrogen in the sewage are degraded through aerobic bacteria to decrease the COD concentration and the ammonium nitrogen concentration; 6, the sewage subjected to the aerobic reaction is delivered into a biodegradation planting greenhouse to degrade COD and ammonium nitrogen in the sewage and purify water; 7, the purified water is used for farm irrigation. According to the technology, the concentration of suspended solids, ammonium nitrogen and organic pollutants in the sewage can be effectively decreased to the standard level, the whole treatment process achieves full biodegradation, no secondary pollution is generated, the removal effect of the suspended solids is good in the filtering link, the subsequent sewage treatment difficulty is reduced, the treatment cost is low, filtered sludge is naturally dried, dewatering does not need to be conducted through sludge dewatering equipment, and the treatment cost is low.

Description

[0001] Technical field: [0002] The invention relates to a breeding sewage treatment process. [0003] Background technique: [0004] Aquaculture sewage has become the main source of agricultural non-point source pollution, especially aquaculture sewage with large volume, high concentration, and difficult environmental protection treatment, which has continuously caused pollution incidents. The concentration of organic matter, suspended solids, and ammonia nitrogen and phosphorus in the aquaculture sewage are high, and all indicators have exceeded the national discharge standard by several times or even dozens of times. important source. Although there is a treatment process for aquaculture sewage at present, it requires chemical agents, causing secondary pollution, and the sludge filtered out in the sewage treatment process cannot be used directly. It needs to be dehydrated with the help of sludge dewatering equipment, which has high treatment costs. In the link, the remova...

AI Technical Summary

Problems solved by technology

At present, although there is a treatment process for aquaculture sewage, it requires chemical agents, causing secondary pollution, and the sludge filtered out in the sewage treatment process cannot be used directly. It needs to be dehydrated with the help of sludge dewatering equipment, which has high treatment costs. link, the removal effect of suspended solids is poor, and the treatment effect of ammonia nitrogen and organic pollutants in sewage is also poor, which does not meet the discharge standards

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