V shaped groove type microgrid component capable of continuously on-line updating dynamic membrane and use method thereof

Abstract

The invention relates to a V-shaped slot type cube micronet assembly and an application method thereof for continuously renewing a dynamic film, which comprises a micronet net body. The invention is characterized in that the V-shaped slot type cube micronet assembly is also provided with a pane-shaped shell sleeve, a guidance track with a T-shaped cross section, reverse flushing water pipes, a water collection bank of air injection flushing pipes and a walk mechanism, wherein the micronet net body is a cubic micronet net body formed by a plurality of layers of micronets of various calibers which are superposed, fixed by a frame into shape and connected in parallel by a plurality of rows of V-shaped slots, and the bottom of the micronet net body is hermetically connected with a bottom net;a plurality of closed net chambers are formed between the micronet net body and the bottom net, and ceramic granule balls are placed in the closed net chambers; the guidance track is arranged in the center of the shell sleeve, two micronet net bodies are symmetrically arranged on both sides of the guidance track, the top of the guidance track is provided with the walk mechanism driving the reverse flushing water pipes and the air injection flushing pipes on both sides to synchronously and continuously reciprocate, and 0.5 percent to 1 percent of environmental mineral material is added in mixed liquid for application. The invention has the advantages of low manufacturing cost, small size, high flux, good out-water quality, high water-out rate, power and control system optimization and simplification, low energy consumption and low cost.

Description

technical field [0001] The invention relates to a membrane module for membrane bioreactor technology in the field of sewage and wastewater treatment, in particular to a membrane module with the synergistic effect of environmental minerals, microbial bacteria micelles and micro-filter screens (commonly referred to as micro-screens in the industry) to achieve micro-filtration solid-liquid separation Effect of Continuous Renewal Dynamic Membrane V-groove Cube Micromesh Assembly and Method of Application. Background technique [0002] The research and development of membrane bioreactor (Membrane Bio Reactor, referred to as MBR) has only a history of nearly 30 years, and the real scale application has been less than 20 years. It is a new type of water treatment device that combines sewage and wastewater biological treatment technology with membrane separation technology. The high-quality solid-liquid separation effect of the membrane bioreactor process and the high-concentration...

AI Technical Summary

Problems solved by technology

Cross-flow is the use of turbulent flow shearing and scouring to inhibit the accumulation of pollutants on the membrane surface, which is very effective for MBR membrane modules to reduce pollution, but it is not suitable for active and flexible dynamic membranes that use pollutants for solid-liquid separation. However, it will have adverse effects. The turbulent flow will make the texture soft and the adhesion to the filter screen will be weak, especially in the metabolic process of birth, growth, maturity, weakness, and death. The micro-network causes irregular leakage of suspended matter; the cross-flow not only reflects the surface shearing and scouring effect, but also has the normal vibration effect on the membrane surface. This normal vibration makes the growth of the membrane layer impossible to be uniform. The amplitude is too high and it is difficult to form an effective gel layer. Therefore, the dynamic membrane operating in the cross-flow mode has a poor interception effect on the dissolved organic matter with a large molecular weight; There are "loopholes", which make the turbidity of the effluent fluctuate irregularly and are difficult to control at a high level, and the total number of bacteria exceeds the standard; especially in the process of use, due to the thickening of the film layer, too much attached dirt, and the decrease in flux, sufficient Large flow of water or air-mixed water makes the backwashing equipment have a large capacity, resource consumption, high energy consumption, intermittent use, and high equipment idle rate; after backwashing, a large amount of unfiltered interference water will be generated during the dynamic membrane regeneration , making it difficult to increase the water yield

These adverse effects cause the existing dynamic membrane technology to be in the technical bottleneck of unstable effluent water quality, difficulty in enlarging the membrane area, low water yield, and inability to realize large-scale application, which limits the engineering application of dynamic membrane technology

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