Hydraulics micro-device for researching sludge form and structural stability and method thereof

Abstract

The invention discloses a hydraulics micro-device for researching sludge form and structural stability and a method thereof. A reaction device main body of the device is a transparent box body, the bottom of the reaction device main body is recessed inwards to form a flow channel, the bottom of the reaction device main body is detachably connected with a bottom plate, and the bottom plate seals the flow channel to form a closed hollow chamber; the hollow cavity comprises a water inlet section, a middle section and a water outlet section which are sequentially communicated, the middle section is a square cavity, and the water inlet section and the water outlet section are both gradually shrunk towards the end side to form a conical cavity; an agar plate withe sludge seeding is fixedly connected to the bottom plate positioned in the hollow chamber, and is positioned in the hollow chamber; a stereoscope is arranged outside the reaction device main body above the agar plate and is used forobserving the form and structure of sludge on the agar plate. The device provided by the invention can eliminate interference of other factors such as bubbles and solid particles in the system to thegreatest extent, and can provide a reference basis for the improvement of sewage treatment process performance and the resource utilization of sludge.

Description

technical field [0001] The invention belongs to the fields of sewage biological treatment and sludge disposal, and in particular relates to a hydraulic micro-device and a method for studying sludge form and structural stability. Background technique [0002] Sludge is a self-flocculation of microorganisms, especially aerobic granular sludge, which forms particles through microbial self-aggregation under certain circumstances. As an upgraded process of the activated sludge method, aerobic granular sludge has a dense physical structure, excellent settling performance, functional mutual-win bacterial flora and high concentration of biomass. It has obvious technical advantages and good application prospects in terms of efficient degradation of toxic substances and reduction of excess sludge. Up to now, the Netherlands, South Africa and other places have successively built more than 40 sewage treatment plants using aerobic granular sludge technology, with a treatment scale of 20...

AI Technical Summary

Problems solved by technology

However, in order to obtain the influence mechanism of hydraulic conditions on granular sludge, most studies start from the perspective of aeration in SBR reactors, focusing on the effect of hydraulic shear force brought by air bubbles and water flow on the stability of aerobic sludge particles. However, the specific mechanism of microbial aggregation is still unclear, and the complexity of influencing factors limits the proposal of hydraulic control strategies for the system.

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