Temperature-controllable biological membrane culture device for non-cyclical water supply pipeline and use method of biological membrane culture device

Abstract

The invention discloses a temperature-controllable biological membrane culture device for a non-cyclical water supply pipeline and a use method of the biological membrane culture device. The device comprises a heating pipeline, the non-cyclical water supply pipeline, an extra-fine glass wool thermal insulation material, an in-situ biological membrane sampler, a butterfly valve, a digital display temperature controller, temperature probes and a heating blanket. In order to increase the contact area of the pipeline and the heating blanket, the heating pipeline is bent in an S shape and covered with the heating blanket. The temperature detected by the three temperature probes is fed back to the digital display temperature controller, and the digital display temperature controller controls the heating blanket to heat a water body in a constant temperature manner. The non-cyclical water supply pipeline is wrapped with the extra-fine glass wool thermal insulation material, and meanwhile, a plurality of piston rings facilitating mounting of the in-situ biological membrane sampler are arranged on the non-cyclical water supply pipeline. The butterfly valve is arranged at the tail end of the pipeline and used for controlling the flow speed. The temperature-controllable biological membrane culture device is suitable for culturing a biological membrane at the constant water temperature and has the advantages that the reaction is sensitive, the stability is good, sampling is convenient, the use is safe and the adjustment is convenient.

Description

technical field [0001] The invention relates to a simulation system for biofilm cultivation of drinking water supply pipelines, in particular to a temperature-controllable non-circulating water supply pipeline biofilm cultivation device, which belongs to the technical field of water supply pipeline network simulation experiments. Background technique [0002] Nowadays, people pay more and more attention to the biosafety in the water supply pipe network. In the process of drinking water transmission, the most important factor affecting biosafety is the biofilm growing on the pipe wall. The biofilm in the decline period will automatically fall off to the water body In the process, the concentration of microorganisms in drinking water suddenly increases, causing secondary pollution. In order to deeply study the biofilm in the water supply network, people use the following two types of simulation systems to cultivate biofilm: the first type is reactor type simulation system, suc...

AI Technical Summary

Problems solved by technology

The reactor-type simulation system mainly provides a certain water flow shear stress for the surface of the sampling piece through the rotation of the stirring piece in the container, or the coaxial rotation of the sampling piece through the bracket, but the reactor-type simulation system can only adjust the rotation The velocity changes the water flow velocity, which cannot simulate the water pressure and hydraulic retention time of the actual pipeline. Therefore, the pipeline simulation system can more directly reflect the real flow state of the water flow in the pipeline than the reactor simulation system.

However, when the existing semi-circulation system and circulation system are in operation, the circulating water pump will cause the water temperature in the system to rise by 2-3°C in winter (indoor temperature is 0-10°C), and in summer (indoor temperature is 25-35°C). will rise more, the temperature in the existing non-circulatory system can only change with the environment

Therefore, the existing pipeline simulation system cannot realize the constant temperature cultivation of biofilm in the laboratory

[0004] In addition, when doing a comparative test between a circulatory system or a semi-circulatory system and a non-circulatory system, there is often a temperature difference between the two systems due to the above reasons, which leads to differences in the microbial growth environment in the comparative test and affects the test results.

At present, the commonly used method to overcome this problem is to spray and cool down the pipes (or pumps) in the circulation system or semi-circulation system, but the spray method is difficult to control, the efficiency is low, and the water temperature still cannot be completely lowered to the same level as that of the non-circulation system. Level

[0005] To sum up, the existing simulation systems have their own disadvantages, and the simulation of biofilm cultivation systems in water supply pipelines by existing technologies is not reasonable and perfect enough.

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