Multifunctional filtering and backwashing experimental device

Abstract

The invention relates to a multifunctional filtering and backwashing experimental device. In the device, a gas-liquid atomization flash mixing jet device is adopted to put a coagulant; a multi-port water sample collector is used for collecting the water quality conditions of all layers of filter water; and a bubble bursting and mud film disturbing device without a filter head is adopted to improve the backwashing effect. The device can be used for carrying out the following experiments: constant speed filter experiments and variable speed filter experiments of flocculation box outlet water, constant speed contact and filter experiments and variable speed contact and filter experiments with drugs put to raw water, contact and filter optimal drug put quantity experiments with drugs putt to raw water, back washing experiments by using water, gas disturbing and water backwashing experiments of a small-resistance system without the filter head, gas disturbing and water backwashing experiments of a large-resistance system without the filter head, gas and water simultaneous backwashing experiments after gas disturbing of the small-resistance system without the filter head and gas and water simultaneous backwashing experiments after gas disturbing of the large-resistance system without the filter head. The invention is suitable for teaching, scientific researches and design and production units to determine the parameters of various types of filtering and backwashing by the experiments.

Description

technical field [0001] The invention relates to a multifunctional filtering and backwashing experimental device, which belongs to the technical field of teaching, production and scientific research of water supply and drainage engineering. Background technique [0002] Filtration is an important process for water treatment or advanced sewage treatment. Many design parameters or production operation parameters of the filter (such as optimal filtration rate, optimal filtration cycle, backwash intensity, backwash duration, etc.) cannot be completely determined theoretically at present, but must be solved by experimental research. Therefore, the filtration experiment is one of the important experiments in teaching, production and scientific research. [0003] Most of the existing filtration experimental devices are incomplete. For example, they can only be used for constant-speed filtration of the effluent of the sedimentation tank, but not variable-speed filtration, or cannot ...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing filtration experimental devices are incomplete. For example, they can only be used for constant-speed filtration of the effluent of the sedimentation tank, but not variable-speed filtration, or cannot be used for contact filtration of dosing raw water; in terms of backwashing, only water backwashing experiments can be done. , but can not do air, water backwash or at most with filter head air, water backwash experiment

As a result, experimental research on filtration is greatly limited

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