Treatment process of high-concentration pig farm wastewater

Abstract

The invention relates to a treatment process of high-concentration pig farm wastewater. The processing process comprises the following steps of introducing the high-concentration pig farm wastewater into a regulating tank containing anaerobic bacteria, and carrying out primary anaerobic treatment on the wastewater; sequentially introducing the wastewater treated in the regulating tank into a screen filter tank and an acidifying slag storage tank, wherein the screen filter tank is connected with the acidifying slag storage tank through a sewage draining hole, and a sludge drying tank is arranged beside the acidifying slag storage tank; introducing the wastewater treated in the acidifying slag storage tank into a first-stage anaerobic tank and a second-stage anaerobic tank through a homogenizing tank; introducing the wastewater treated in the second-stage anaerobic tank into an SPR (surface plasma resonance) tank, wherein the SPR tank comprises an aerobic zone and anoxic zones, the aerobic zone is arranged at the middle of the SPR tank, and the anoxic zones are distributed around the aerobic zone; directly draining the wastewater treated in the SPR tank into a constructed wetland. According to the treatment process, the problems that the industrial wastewater of the pig farm is effluvial and is high in concentration of organic matters and ammonia nitrogen are solved, and the treated wastewater can be directly drained to the constructed wetland.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a treatment process for high-concentration pig farm wastewater. Background technique [0002] At present, the utilization of pig farm manure is mainly to separate the manure from wet and dry, and transform pig manure into high-efficiency agricultural fertilizer after certain treatment; as for urine and site washing sewage, due to their low utilization value, they are lost. quite serious. According to statistics, the loss rate of livestock and poultry urine and site flushing water in my country is more than 50%. The treatment of this type of wastewater is relatively difficult, and there is still a lack of successful experience in the treatment and utilization of livestock and poultry urine and site flushing water. Production wastewater from pig farms often has the characteristics of foul odor, high concentration of organic matter, and high concentration of ammonia nitrogen. If i...

AI Technical Summary

Problems solved by technology

Production wastewater from pig farms often has the characteristics of foul odor, high concentration of organic matter, and high concentration of ammonia nitrogen. If it is discharged directly without treatment, it will cause serious environmental pollution and cause strong social reactions.