Membrane bioreactor technology as well as device thereof based on pollutant parallel processing

Abstract

The invention relates to a membrane bioreactor technology as well as a device thereof based on pollutant parallel processing. The invention provides a membrane bioreactor technology based on pollutant parallel processing; a membrane bioreactor is internally provided with a hydrolytic acidification zone, an anaerobic zone, an anoxic zone and an aerobic zone; the gradient flow field distribution of the anaerobic zone, the anoxic zone and the aerobic zone with alternative variation is formed in the membrane bioreactor through regulating the aeration quantity of an aerator, and an anaerobic-anoxic zone-aerobic biological environment is formed in the membrane bioreactor. The invention also provides a membrane bioreaction device based on pollutant parallel processing. The membrane bioreactor technology and the device thereof based on pollutant parallel processing, which are provided by the invention, have the beneficial effects of low energy consumption, low residual sludge processing difficulty, good pollutant removing effect, simplicity and convenience in technology control, convenience in routine maintenance and management, thereby guaranteeing the drained water quality; pollution difficulty, low cost and small occupied area for the membrane bioreactor.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to domestic sewage treatment and high-concentration organic wastewater technology, and in particular to a membrane bioreactor device based on parallel treatment of pollutants. Background technique [0002] The current typical sewage treatment process generally includes a combination of aerobic, anoxic, anaerobic, sedimentation and sludge treatment units. Different microorganisms in the activated sludge can proliferate by removing organic matter, nitrogen, phosphorus, etc., and discharge the nutrients solidified into the microorganisms through the sedimentation and discharge sludge, thereby removing various pollutants. The mechanism is to use different types of microorganisms to remove nutrients such as carbon, nitrogen, and phosphorus from the sewage treatment system by discharging part of the sludge. Therefore, the enrichment and growth of different types of microorganism...

AI Technical Summary

Problems solved by technology

Therefore, the enrichment and growth of different types of microorganisms and sludge discharge have become the key technologies for typical sewage treatment. In practical engineering applications, there are mainly the following problems: 1. It is difficult for different types of microorganisms to enrich and grow at the same time, and the removal effect on nitrogen and phosphorus Limited; 2. The amount of sludge discharge is large, and it is difficult to dispose of the remaining sludge, which directly affects the removal effect of phosphorus. In order to maintain a good sludge discharge effect, the sludge discharge of existing urban sewage treatment plants is 2% of the sewage treatment volume. %, the problem of excess sludge disposal has become a difficult problem faced by major sewage treatment plants at present; 3. The process is complicated and the daily maintenance and management are difficult, making it difficult to guarantee the quality of effluent water

However, this type of reactor has the following problems: 1. The aeration intensity is very high, and the energy consumption is high; 2. The sludge is discharged regularly, and the disposal of the remaining sludge is difficult, and directly affects the removal effect of phosphorus; 3. The process control is cumbersome , daily maintenance and management are difficult, making it difficult to guarantee the quality of effluent water; 4. The membrane is easy to pollute

[0004] The above sewage treatment processes all have problems such as large amount of sludge discharge, cumbersome process control, complex maintenance and management, etc., making it difficult to guarantee the quality of the effluent water of the system, and the investment and operation costs are high, and the land occupation is large, etc.

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