Wheat processing waste water treatment system

Abstract

The invention relates to a wheat processing waste water treatment system. The wheat processing waste water treatment system comprises a waste water equalization pond, a floatation pond, an oxidation and precipitation pond, a baffled anoxic and anaerobic reaction pond, a complete-mixing aerobiotic pond, a secondary sedimentation pond and an efficient multilayer filter tower. The floatation pond includes a mixing zone and a separation zone sequentially from bottom to top. The oxidation and precipitation pond comprises an aeration mixing zone and a precipitation zone. The baffled anoxic and anaerobic reaction pond comprises a facultative anaerobic zone, an anoxic zone and an anaerobic zone which are separated by baffle plates. The complete-mixing aerobiotic pond is provided with a water inlet pipe, a water-distributing triangle cone and an aeration regulation and control system. Waste water is fed into the floatation pond through the waste water equalization pond, scum is removed, then the waste water is fed into the oxidation and precipitation pond, pollutants are subjected to oxidative decomposition, the waste water is fed into the baffled anoxic and anaerobic reaction pond and the complete-mixing aerobiotic pond to perform anoxic, anaerobic and aerobiotic reaction, and then the waste water is reused after being filtered by the efficient multilayer filter tower.

Description

Technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a wheat processing wastewater treatment system. Background technique [0002] Wheat is one of the main food crops in the world. It has received extensive attention due to its abundant output and renewable resource advantages. The wheat processing industry has made significant contributions to increasing the added value of wheat, stabilizing the economy of wheat producing areas, and serving agriculture, rural areas and farmers. . However, many pollutants are emitted during wheat processing. The discharged wastewater mainly contains starch, protein and sugar. The COD value of wastewater is generally 7000-25000mg / L, BOD value is 5000-15000mg / L, and SS value is 2000 -4500mg / L, so wheat processing enterprises have become major polluters, and it is very difficult to control the end. If the wastewater is improperly treated and discharged into the water body, it will cause seri...

AI Technical Summary

Problems solved by technology

However, a variety of pollutants are discharged during wheat processing. The discharged wastewater mainly contains starch, protein and sugar. The COD value of the wastewater is generally 7000-25000mg / L, the BOD value is 5000-15000mg / L, and the SS value is 2000 -4500mg / L, so wheat processing enterprises have become major polluters, and terminal treatment is very difficult

If the wastewater is not properly treated and discharged into the water body, it will cause serious water pollution

[0003] At present, most wheat processing enterprises use anaerobic-aerobic biological combination process for wastewater treatment. Although COD can be removed in practical engineering applications, the impact resistance of the wastewater treatment system is poor, and it is difficult to ensure stable and efficient removal of pollutants; MBR process The treatment of wheat processing wastewater has achieved good results, but the cost is high

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