Core-three-circulation combined water treatment process

Abstract

The invention relates to a core-added three-cycle combined water treatment method. The method consists of four parts in a water treatment structure, namely a mixing flocculation area, an activated sludge chamber, a taper sludge concentration area and a clarification and separation area. The mixing flocculation area is provided with a water inlet pipe, a water inlet control valve and a nozzle, a first-level flocculation chamber, a second-level flocculation chamber and a reverse skirt plate. A mixing chamber is provided with a speed regulation stirring device; the water inlet pipe is connected with a mixing headwater control device and a coagulant preparation and addition system; the first level flocculation chamber is connected with a flocculant preparation and addition system; a pressure cyclone separator is arranged on the upper part; a sand pump water inlet pipe is connected with the taper sludge concentration area; and the outputted water is connected with the pressure cyclone separator. The activated sludge chamber comprises a vertical pond wall, a built-in underwater stirring machine, an outputted water control valve and a sludge reflux control valve. The taper sludge concentration area is positioned at the center of the activated sludge chamber; and a taper pond wall and a water outlet pipe connected with the outputted water control valve of the activated sludge chamber are arranged between the taper sludge concentration area and the activated sludge chamber. The clarification and separation area comprises a clarification and separation area, a water collecting system and a water outlet trough.

Description

technical field [0001] The invention relates to a combined water treatment method with nuclear addition and three cycles, in particular to a clarification technology in the field of water purification and a combined treatment technology of activated sludge method and crystal nucleus flocculation in the field of sewage treatment and reclaimed water reuse. Background technique [0002] With the implementation of the "Drinking Water Hygienic Standard" (GB5749-2006), higher requirements have been put forward for conventional water purification processes. The water quality after the process treatment cannot meet the requirements of the effluent water quality of the filter, and the algae bloom in the water body caused by the eutrophication of the raw water makes the treatment difficult for the conventional water purification process, which affects both the water quality and the water quantity. At the same time, due to the sudden increase of raw water turbidity caused by climate ch...

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Problems solved by technology

As far as sewage treatment is concerned, the existing domestic sewage treatment is generally based on biochemical processes, the structure is large, and the project cost is high. How to find a treatment that is efficient, compact in structure, low in cost, convenient in operation and management, and resistant to impact loads? Structures are the research direction of this project, especially to solve domestic sewage treatment plants at the township level, which can achieve the first-level treatment and meet the discharge standards; for different water quality in different seasons, different operation modes are adopted to deal with it, and the operation mode is reduced as much as possible. cost, and more

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