Self-adaptive hydraulic cyclone desilting method for big turbidity change

Abstract

The invention discloses a self-adaptive hydraulic cyclone desilting method for big turbidity change. Raw water enters an annular distribution pipe encircling around an adjustable guide flow cylinder through a water inlet pipe; then the raw water enters an upper layer of a mixing flocculation zone through multiple nozzles on the annular distributing pipe to form a hydraulic cyclone; through the effects of the annular separating wall and the adjustable guide flow cylinder, the rotating water flow completes the flocculation process in the mixing flocculation zone; water after flocculation flows into a sediment separating zone from the lower part of the mixing flocculation zone to perform mud and water separation; liquid supernatant is collected through a water collecting tank at the upper part of the sediment separating zone; the separated sludge enters a sludge concentration zone at the lower part of the pond body downwards to concentrate. The self-adaptive hydraulic cyclone desilting method has the advantages that the pond structure is simple, and the sludge discharge is reliable; when different characters of raw water is coped, the raw water with high turbidity and big turbidity change has good adaptation through changing the installing height of the guide flow cylinder and automatically adjusting a scraper blade of a mud scraper.

Description

technical field [0001] The invention relates to the technical field of mud-water separation of high turbidity water in water supply engineering, in particular to an adaptive hydrocyclone sedimentation method for large turbidity changes, suitable for high turbidity and turbidity changes in small-scale situations Larger raw water pretreatment. Background technique [0002] In my country, the upper reaches of the Yellow River and the Yangtze River and their main streams and tributaries often have high sediment concentrations all year round or seasonally. In the scope of water supply projects, this type of raw water is turbid and has a large sediment content, which is called "high turbidity water". For this type of raw water, my country has also formulated the industry standard "Code for Design of High Turbidity Water Supply". Among them, the pretreatment facilities for high turbidity water supply are particularly critical to the equipment protection of subsequent treatment pr...

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Problems solved by technology

[0005] The present invention is an adaptive hydrocyclone sedimentation method for large turbidity changes. According to the sedimentation characteristics of high turbidity water, it adopts a ring-shaped multi-point water distribution method, which greatly improves the effect of hydrocyclone and improves The flocculation effect of high turbidity water; through the optimization of structural layout and the use of central transmission mode, the reliability of the equipment is improved and the purpose of energy saving is achieved; The sludge discharge method of separation and self-adaptive adjustment solves the problems of difficult sludge discharge of existing treatment structures, unstable effluent quality, and large amount of equipment maintenance.

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