A membrane bioreactor and its water treatment control method

Abstract

The invention provides a membrane bioreactor and a water treatment control method thereof. A cleaning system is additionally arranged in the membrane bioreactor to clean a membrane component; a computer system is used for controlling the on / off of an aeration pump according to a dissolved oxygen concentration signal output by a dissolved oxygen sensor and controlling the on / off of a water outflowpump, an electrically controlled water outflow valve and the cleaning system according to a water pressure signal output by a pressure sensor, so that the water treatment control process is highly automated, operators only need to set corresponding parameters, and the use and operation are more simple and convenient; and the membrane bioreactor provided by the invention can carry out the cleaningtreatment on the membrane component without the need of aeration, can reasonably control the on / off of the aeration pump according to the concentration of the dissolved oxygen in water to reduce the aeration energy consumption and avoid the energy consumption increase because of persistent large-power aeration of the aeration pump, and can simultaneously control the cleaning process reasonably according to the pumping water pressure to avoid the water pump energy consumption increase caused by overhigh membrane resistance pressure of the membrane component and effectively control the water generation energy consumption cost.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a membrane bioreactor and a water treatment control method thereof. Background technique [0002] At present, due to the excessive and unrestrained development of water resources in many areas of the country, the awareness of environmental protection is relatively poor, so that surface water and groundwater are polluted to varying degrees, and the supply of fresh water with good water quality is limited. Secondly, the fresh water source to be developed is far away from the centralized water supply point, and the one-time investment cost is high, so some water-deficient areas are unable to expand the water supply capacity. If the water used by people in life and production and domestic sewage / wastewater is reused after collection and regeneration, it can be used as miscellaneous water that does not come into direct contact with the human body, such as ground cl...

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Problems solved by technology

[0006] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a membrane bioreactor with a highly automated control process, to solve the problem of cumbersome use and operation, and to further solve the problem of high energy consumption and high water production cost of the membrane bioreactor. The problem; Correspondingly, the present invention also provides a kind of water treatment control method of this membrane bioreactor

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