Water supply pipe network biofilm growth simulation device with multi-working-condition conversion

Abstract

The invention discloses a water supply pipe network biofilm growth simulation device with multi-working-condition conversion, and relates to the technical field of environment technology and water treatment, the device comprises a water tank, the top of the water tank is fixedly connected with a water inlet, a stirrer is arranged in the water tank, one side of the water tank is fixedly connected with a water outlet pipe, the water outlet pipe is connected with a peristaltic pump, the peristaltic pump is connected with an outer barrel inner wall hanging piece type pipeline biofilm reactor through a water inlet pipe, the outer barrel inner wall hanging piece type pipeline biofilm reactor is driven by a programmable brushless frequency conversion direct current motor, and a water outlet is formed in the lower portion of the outer barrel inner wall hanging piece type pipeline biofilm reactor and connected with a water drainage pipe. The device is simple in structure, can simulate the growth environment of a pipe network biofilm by setting the combination of various shear forces and variable flow modes, can jointly perform multi-working-condition conversion research on water quality, water age, hydraulic conditions and the like, has good stability and more hanging piece positions, can perform multi-working-condition conversion research at the same time, can simulate a more real pipe network flow state, and can be widely popularized in the research field.

Description

technical field [0001] The invention relates to the fields of environmental technology and water treatment technology, in particular to a water supply pipe network biofilm growth simulation device with multiple working conditions. Background technique [0002] The vast majority of domestic water is delivered by water plants through the water supply pipe network, so when the water supply pipe network is polluted, there is no guarantee for the user's terminal water use. The current reality is that the water source has been purified by the water plant and has reached the standard of drinking water. However, when the factory water is transported through the huge underground water supply network, the problems of microbial regrowth and related secondary pollution of water quality will still occur. The inorganic and organic deposits on the inner surface of the pipe network provide a relatively good environment for the regrowth of microorganisms. The growth form of microorganisms ...

AI Technical Summary

Problems solved by technology

[0005] In recent years, some devices have also appeared for biofilm hanging sheet ring reaction devices to simulate the inner wall of the BAR outer cylinder hanging sheet type pipeline biofilm reactor, but there are still some room for improvement. For example, the Chinese patent publication number is CN202126304U, named It is a patent for simulating the growth of microorganisms in water supply pipelines on the inner wall of the outer cylinder with a piece-mounted pipeline biofilm reactor. There is no problem of dead angle, and because the hanging pieces are placed on the outer wall, the number of hanging pieces can be increased, but the agitator in the water can only provide a kind of spiral shear force of water, and the flow state generated is tangential flow, which is more realistic in the pipe network environment It tends to parallel flow, so the device cannot simulate the real pipe network environment, and there are certain safety hazards to fix the hanging piece only through the carrier plate. Under the high-speed water flow, the hanging piece is extremely unstable, and the safety and stability of the experiment Low, the device is carried out in a closed system, the overall device does not exchange with the outside water flow during operation, and there is no research on issues such as water age, the research conditions are too single and not complex enough

The Chinese patent publication number is CN210246302U, in the patent titled the electrochemical reaction system that can explore the corrosion of the tap water pipe wall and the growth of microorganisms. This system proposes to use the idea of ​​electrochemistry to study the growth of microorganisms. On the outer wall of the wall, the number of hanging pieces can be increased, and the flow process of the exchange between the external water body and the inside is also considered, but it is not considered that the hanging pieces are easily affected by the impact of water flow, and the hanging pieces are not strengthened and fixed, and the safety performance is low. At the same time, using The stirring fan blades of this system can only generate spiral shear force, and cannot accurately simulate the water flow inside the pipe network, nor does it mention the problem of compound transformation research under multiple working conditions

[0006] The purpose of the technical solution of the present invention is to overcome the shortcomings of the current biofilm hanging piece ring reaction device to simulate the pipe network environment is not realistic enough and design a simple and stable structure, which can simulate more realistic multi-working conditions to control water quality, water age and hydraulic conditions The water supply pipe network biofilm growth simulation device in the same pipe network environment is based on the extended research results of the National Natural Science Foundation of China Youth Fund (No. 51606176) and the Jiangxi Provincial Natural Science Foundation of China (No. 20161BAB216116)

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