Composite bioreactor for treating high-concentration hardly-degradable waste water

Abstract

The invention is a composite bioreactor for treating high-concentration refractory wastewater, which consists of three parts: an immobilized biological reaction area, a comprehensive degradation area and a precipitation area. There are engineering bacteria in the immobilized biological reaction area. There are water inlet, air inlet and mud discharge outlet at the bottom, and exhaust holes at the top. The air inlet is connected with the air inlet pipe and the aeration head. There are multiple diversion holes, and the diversion holes are connected to the comprehensive degradation area; there are mixed bacteria in the comprehensive degradation area, the interior is filled with fillers, the bottom is equipped with aeration strips, and the middle part of the outer wall is equipped with multiple liquid diversion grooves. The lower part of the flow tank has a ring-shaped bubble barrier, and the bottom is equipped with multiple sludge return channels. Both the liquid diversion channel and the sludge return channel are connected to the sedimentation area; the upper part of the sedimentation area is provided with a drainage port, and the bottom is provided with a sludge discharge port. The invention effectively treats the waste water through the compound action of the engineering bacteria and the mixed bacteria. The reactor of the invention has compact structure, can greatly reduce the dilution ratio of waste water, has small volume and low cost.

Description

technical field [0001] The invention belongs to equipment for treating wastewater by using a bioreactor, in particular to a composite bioreactor for treating high-concentration refractory wastewater. Background technique [0002] A large amount of high-concentration and refractory organic wastewater will be produced in the process of industrial production. If these organic wastewater is directly discharged into the environment without effective treatment, it will have a serious impact on human health and the ecological environment. At present, how to treat high-concentration refractory organic wastewater economically and efficiently is a hot and difficult point in the field of water treatment. Researchers at home and abroad have improved and strengthened the treatment effect of high-concentration refractory organic wastewater from various aspects such as improving the treatment process, adding high-efficiency microorganisms, and implementing cleaner production, so as to achi...

AI Technical Summary

Problems solved by technology

However, engineering bacteria have strong selectivity and specificity for substrates, and the degradation rates of engineering bacteria show obvious differences for different types of pollutants.

When the composition of the actual wastewater is complex, it is difficult to effectively degrade all pollutants at the same time only by relying on the degradation of engineering bacteria

In addition, the loss of engineering bacteria will also bring environmental biosafety problems

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