Purification method of mixed water body with algae and silt

A water and sediment technology, which is applied in the field of purification of polluted water bodies, can solve the problems of difficulty in meeting turbidity standards, large equipment investment, and high sediment specificity, so as to save air flotation tanks, accelerate sedimentation speed, and complete flocculation. Effect

CN101306884BActive Publication Date: 2010-12-01YUNNAN THREE CIRCLES SINOCHEM FERTILIZERS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2010-12-01

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Abstract

The invention discloses a method for clarifying a mixed water body containing algae and sand. Firstly, inorganic flocculating agent is added into the mixed water body containing the algae and the sand, and is evenly mixed through a pipeline mixer to generate flocculation, then organic flocculating agent is added after a plurality of small flocculating conglomerations are produced, and is evenly mixed through the pipeline mixer to form a coagulated water body containing large flocculating conglomerations, wherein, the adding amount of the inorganic flocculating agent is 0.0005 to 0.0100 percent of the weight of the water body, and the adding amount of the organic flocculating agent is 0.0001 to 0.0030 percent of the weight of the water body. Then the coagulated water body is drawn into a single-segment sedimentation pond for sedimentation treatment, and water overflows from the upper layer of the sedimentation pond, enters a fine filter chamber, and passes through a quartz sand and anthracite filtering layer for fine filtration treatment, thereby obtaining clear water with SS less than or equal to 5mg / L and a turbidity less than or equal to 1.
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Description

A purification method for mixed water containing algae and sediment technical field The invention relates to a method for purifying polluted water, and the method of the invention is particularly suitable for purifying mixed water containing algae and sediment. Background technique With the rapid development of the economy, the environmental pollution caused by it has attracted great attention from all aspects of the society. Many domestic lakes, such as the "pearl of the plateau" - Dianchi Lake, have experienced "eutrophication" and the water contains a lot of overgrown algae. For a long time, the purification and treatment of polluted water bodies like Dianchi Lake has been a difficult problem. The true specific gravity of algal matter is small, so it is suitable to use "flocculation-air flotation tank" treatment, and the treatment effect of "flocculation-sedimentation tank" is not good. And when the lake water body containing more algae flows for a certain distance al...

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