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A kind of river bottom mud restoration agent and its preparation and application method

A technology for river channel sediment and repairing agent, applied in the field of environmental repair, can solve the problems of low treatment efficiency, inability to repair sediment, large dosage, etc., and achieves the effect of simple and easy preparation method and overcoming fast dissolution.

Active Publication Date: 2022-03-01
海绵城市投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional repair agent will be released and transferred quickly when it is directly put into the river, and this direct spreading method cannot repair the deep sediment, so the treatment efficiency is low and the dosage is large

Method used

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  • A kind of river bottom mud restoration agent and its preparation and application method
  • A kind of river bottom mud restoration agent and its preparation and application method
  • A kind of river bottom mud restoration agent and its preparation and application method

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preparation example Construction

[0041] In another embodiment, the preparation method of the calcium carbonate that is loaded with iron oxide, comprises the steps:

[0042] S1000: Prepare respectively 0.5mol / L-2mol / L ferric sulfate solution and 0.5mol / L-2mol / L sodium hydroxide solution, add calcium carbonate to the sodium hydroxide solution to form a suspension, and then add to the Gradually add iron sulfate solution to the suspension, heat and stir on an electric furnace at a temperature of 50°C to 100°C;

[0043] S2000: After the reaction in step S1000 is completed, collect the calcium carbonate and iron hydroxide composite flocs from the precipitate formed by centrifugation, wash the composite flocs with clean water to neutrality, dry them in an oven, and then transfer Calcined in a muffle furnace to obtain calcium carbonate loaded with iron oxide.

[0044] In another embodiment, in step S1000, the molar ratio of sodium hydroxide to iron sulfate is not less than 6:1.

[0045] In another embodiment, in st...

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Abstract

The present disclosure discloses a river channel bottom mud repairing agent. The composition and quality of the river channel bottom mud repairing agent are: 30-50 parts of calcium nitrate, 20-40 parts of calcium carbonate loaded with iron oxide, and 5-20 parts of bentonite , 1-5 parts of polyvinyl alcohol, 1-5 parts of surfactant, and 1-5 parts of adhesive. The disclosure also discloses a preparation method and an application method of a river channel bottom mud restoration agent. The raw materials used in the preparation of the restorative agent disclosed herein are more friendly to the environment, and the preparation method is simple and easy; the prepared restorer has a slow-release effect, and can overcome the problems of fast dissolution, large dosage, and low processing efficiency of traditional restorative agents .

Description

technical field [0001] The disclosure belongs to the field of environmental restoration, and in particular relates to a river bottom mud restoration agent and its preparation and application methods. Background technique [0002] The river course is an important part of the urban ecosystem and an important biological corridor in the city. It has multiple functions such as waterway, culture, entertainment, leisure, landscape and ecology. With the development of society and economy, a large amount of domestic sewage and industrial waste water are discharged into urban rivers, which greatly pollutes urban rivers. Black, smelly water and eutrophication are common phenomena in urban rivers in our country. With the continuous expansion of urban scale, the urban population layout is relatively concentrated, resulting in insufficient urban sewage treatment capacity, and relatively backward sewage interception and treatment facilities, causing a large number of organic pollutants to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00
CPCC02F11/00
Inventor 滕俊姮林方陈文炫毕鹏李小华
Owner 海绵城市投资有限公司