Intensified biological treatment device and method for degradation-resistant organic nitrogen-rich chemical wastewater

A bioaugmentation and treatment device technology, applied in the direction of mechanical oscillation water/sewage treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc., can solve the problem of difficult aerobic microbial decomposition, inability to achieve action, poor biodegradability of organic matter, etc. problem, achieve the effect of avoiding ultrasonic and electrical stimulation, efficient cleaning, and promoting activity
CN106517640AInactive Publication Date: 2017-03-22JIANGSU UNITED VENTURE ENVIRONMENTAL PROTECTION CO LTD +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNITED VENTURE ENVIRONMENTAL PROTECTION CO LTD
Publication Date
2017-03-22
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to an intensified biological treatment device and method for degradation-resistant organic nitrogen-rich chemical wastewater. The intensified biological treatment method comprises the following steps that when wastewater enters a water distributor from a water inlet system, sprinkled into the bottom of a hydrolytic acidification reactor, then flows into a water outlet system from bottom to top, and enters an anoxic zone of a membrane bioreactor; under the action of electrodes, the wastewater enhances the activity of denitrifying bacteria, and nitrogen removal by denitrification is achieved; the wastewater then enters an aerobic zone of the membrane bioreactor, ultrasound generated by an ultrasonic generator is transmitted into an energy converter, and ultrasonic stimulation is conducted on the wastewater to remove organic materials and ammonia nitrogen; the wastewater is pumped out of the membrane bioreactor though a membrane module and enters a water outlet end. The synergistic effect of hydrolytic acidification and the membrane bioreactor is fully utilized, the biodegradability can be improved by hydrolytic acidification, and the problems that degradation is difficult in the aerobic process, the organic materials are slow in degradation and organic loading is low are avoided; then the sludge concentration is improved by means of the membrane bioreactor, and the organic materials and ammonia nitrogen are further degraded.
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Description

technical field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a biologically enhanced treatment device and method for refractory high organic nitrogen chemical wastewater. Background technique

[0002] Traditional aerobic methods are generally used in sewage treatment plants in chemical industry parks. Because the wastewater is characterized by the presence of a large amount of refractory organic matter and high concentration of organic nitrogen, on the one hand, the refractory organic matter has poor biodegradability and is difficult to be decomposed by aerobic microorganisms. Organic matter is difficult to meet the standard; on the other hand, organic nitrogen decomposes for a long time, and aerobic microorganisms decompose organic nitrogen and convert it into a large amount of ammonia nitrogen, resulting in high ammonia nitrogen concentration, and it is difficult to meet the standards for effluent ammonia nitrogen and...

Claims

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