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System and method for in-situ restoration of river water quality

An in-situ restoration and river channel technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems that natural water bodies cannot be mixed, water body pollutants cannot be truly removed, etc. , to achieve the effect of improving the water quality of the river

Active Publication Date: 2020-05-19
BEIJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a system and method for in-situ restoration of river water quality, so as to solve the problem that the existing natural water body cannot be fully mixed with the applied water treatment agent, and water body pollutants cannot be truly removed. question

Method used

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  • System and method for in-situ restoration of river water quality
  • System and method for in-situ restoration of river water quality
  • System and method for in-situ restoration of river water quality

Examples

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example 1

[0069] In a rural river channel, select a suitable section to construct a dam with sandbags, in which the channel width is 3m, the water depth is 1.0m, the flow rate is 320m3 / h, and the flow rate is 30mm / s. Install an inner diameter of 200mm below the water level of the river, and a vacuum water pipe with a horizontal length of 10 meters, so that the middle 1 / 2 of the vacuum water pipe runs through the dam. The vacuum water pipe is sealed and connected with the barrage, and all river water needs to flow through the vacuum water pipe through the barrage. Select the 20m river section behind the dam, dig the section down to a water depth of 2.0m, and dig left and right to a width of 6.0m to form a deepened and widened river channel.

[0070] The water inlet end of the vacuum water pipe is set at 0.4m below the water surface, after penetrating through the dam, it is vertically set 2.0m downward through the elbow, and then extends forward horizontally for 5.0m. The vacuum water pi...

example 2

[0075] In a rural river channel, choose a suitable section and build two dams with sandbags. The channel width is 5m, the water depth is 1.0m, the flow rate is 400m3 / h, and the flow rate is 22mm / s. The distance between the two dams is 40m. Three aeration and aeration machines are arranged between the dams. The two dams are respectively the first dam and the second dam from front to back.

[0076] Pass through the first dam and install a first vacuum water pipe with an inner diameter of 200mm and a horizontal length of 5m, which is set below the water level, so that the middle 1 / 2 of the first vacuum water pipe runs through the first dam dam. The first drug inlet is set at the water inlet end 1.0m position away from the first vacuum water passage, and the first drug inlet is used to apply ferrous sulfate (10%), and the flow rate is 100L / h.

[0077] Pass through the second dam and install a second vacuum water pipe with an inner diameter of 200mm and a horizontal length of 5m ...

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Abstract

The invention relates to the technical field of water quality repairing, in particular to a river water quality in-situ repairing system and method. The river water quality in-situ repairing system comprises an upstream river, a downstream river and a deepened and widened river between the upstream river and the downstream river. A retaining dam is arranged between the upstream river and the deepened and widened river. A vacuum water passing pipeline penetrates through the retaining dam. The two ends of the vacuum water passing pipeline are correspondingly communicated with the upstream riverand the deepened and widened river. A plurality of medicine inlet pipelines are connected to the vacuum water passing pipeline. By means of the system and method, water treatment reagents and river water can be rapidly and sufficiently mixed, suspended solids, ammoniacal nitrogen, phosphorus, COD, various heavy metals and other water body pollutants in the river water can be efficiently removed, the river water quality is comprehensively improved, and the system and method can be widely applied to river and lake water repairing and emergency processing.

Description

technical field [0001] The invention relates to the technical field of water quality restoration, in particular to a system and method for in-situ restoration of river water quality. Background technique [0002] With the rapid development of my country's social economy, the contradiction between water resources and industrialization has become increasingly prominent. Due to the pollution of industrial wastewater, domestic sewage and agricultural non-point sources, the pollution of my country's water resources, especially surface water, has become increasingly serious. The groundwater in my country's seven major water systems, major lakes, coastal waters and some areas has been polluted to varying degrees, and the main characteristics of the pollution are total phosphorus, total nitrogen, chemical oxygen demand and heavy metals exceeding the standard. The above-mentioned complex pollution has caused my country's water environment problems to have a wide range of impacts, ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
CPCC02F1/50C02F1/52C02F2103/007
Inventor 郭学军夏星辉马娜张翔垣
Owner BEIJING NORMAL UNIVERSITY