Water treatment equipment and method of water treatment

Abstract

Provided are a water treatment equipment that combines a reaction vessel utilizing granular active carbon or the like as a microorganism carrier with an immersion membrane separation unit, realizing compactness, energy saving and high decomposition efficiency; and a method of water treatment therewith. In particular, in this water treatment equipment, a reaction vessel adapted to aerate a water to be treated with the use of a microorganism carrier is integrated with a membrane separation vessel equipped with an immersion membrane separation unit capable of membrane separation of the treated water from the reaction vessel. The water treatment equipment is characterized in that the reaction vessel and the membrane separation vessel are divided from each other by a first partition with an open inferior end portion, and that the reaction vessel is divided by means of a second partition with open superior end and inferior end portions into a pre-stage region provided in its inferior area with a first air diffuser and a post-stage region adjacent via the first partition to the membrane separation vessel, and that the bottom of the reaction vessel is inclined so that the height thereof is increased in accordance with approaching from the pre-stage region to the membrane separation vessel.

Description

[0001] technology area [0002] The present invention relates to a treatment device and treatment method for purifying river water, lake water, underground water, etc., or for purifying organic waste water such as sewage and industrial waste water. Background technique [0003] In order to use river water, lake water, etc. as drinking water, it is necessary to remove suspended matter and the like. As a method for removing suspended matter, a method of adding a coagulant or the like and then filtering with a long fiber, and a membrane separation treatment method are known. When the water quality of raw water is good, it is possible to produce stable high-quality drinking water only by removing suspended substances and performing activated carbon adsorption treatment. [0004] On the other hand, when the water quality of the raw water is low, the concentration of organic substances dissolved in the raw water is high, so the burden on the membrane separation device is heavy. A...

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Problems solved by technology

[0004] On the other hand, when the water quality of the raw water is low, the concentration of organic matter dissolved in the raw water is high, so the burden on the membrane separation device is heavy

Moreover, even the combination of suspending agent and long fiber filter cannot effectively reduce the concentration of organic matter

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