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River sediment repairing agent and preparation and application method thereof

A technology for river bottom mud and restoration agent, applied in the field of environmental restoration, can solve the problems of low treatment efficiency, inability to repair bottom mud, large dosage, etc., and achieve the effect of simple and easy preparation method and fast dissolution

Active Publication Date: 2019-12-13
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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  • River sediment repairing agent and preparation and application method thereof
  • River sediment repairing agent and preparation and application method thereof
  • River sediment repairing agent and preparation and application method thereof

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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 invention discloses a river sediment repairing agent, which comprises the following components in parts by mass: 30-50 parts of calcium nitrate, 20-40 parts of calcium carbonate loaded with iron oxide, 5-20 parts of bentonite, 1-5 parts of polyvinyl alcohol, 1-5 parts of a surfactant and 1-5 parts of an adhesive. The invention also discloses a preparation method and application method of the river sediment repairing agent. The raw materials used for preparing the repairing agent are more environment-friendly, and the preparation method is simple and easy to implement; the prepared repairing agent has a slow release effect and can overcome the problems of fast dissolution, large dosage, low treatment efficiency and the like of the traditional repairing agent.

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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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