In-situ purification system for high-turbidity river water and river water treatment method

Abstract

The invention discloses an in-situ purification system for high-turbidity river water and a river water treatment method. A coagulation agent is added into a liquor tank; a water intake gate is opened; simultaneously, a blower and an agent pump are started; the water intake gate is adjusted to control the inflow rate of the high-turbidity river water; the high-turbidity river water and the coagulation agent flowing out of a liquor perforated pipe are fully mixed under the action of the air in an air perforated pipe and react on a coagulation bed to form a sludge flocculation mixed liquor; the mixed liquor flows into a diversion river channel via a diversion canal; and sludge flocculation gradually settles on the river bed of the diversion river channel along with the water flow, so that the purpose of in-situ purification of the high-turbidity river water is achieved. The method provided by the invention has the advantages of on-line in-situ purification on the river channel, high purification efficiency, easiness in operation and control, and the like, and overcomes the defects of high difficulty, high investment and the like of ex-situ river water treatment; and the purified river water can be used for landscape water, so that the method has quite significant market popularization prospects and social benefits.

Description

(1) Technical field [0001] The invention relates to river restoration technology, in particular to an in-situ purification system for diverting high-turbidity river water and a method for treating high-turbidity river water. (2) Background technology [0002] The high turbidity river water caused by sand mining is the main cause of river channel pollution. It contains a large amount of fine-grained inorganic sediment, which flows for a long time without settlement. For this kind of pollutants and water quality characteristics, chemical coagulation technology has become an excellent purification method, which has the advantages of high purification efficiency and large treatment scale. This technology has been applied in foreign lake treatment. Although my country has a certain research foundation, its practical application is still in its infancy, and there are few applications of this technology directly used in the in-situ restoration of high turbidity river water. [000...

AI Technical Summary

Problems solved by technology

However, there are also certain problems. The large particles produced by coagulation and adsorption will be deposited with the bottom mud. After a long period of accumulation, the river bed will be raised. Therefore, dredging is required to meet the functions of flood control and navigation.

[0005] At present, there are almost no application cases of directly dosing chemicals in river channels to control river water turbidity

Images