Method and apparatus for removing overproof iron and manganese in underground seawater

A seawater, iron and manganese technology, applied to the removal of manganese, the above removal method and applicable device, in the field of underground seawater exceeding the standard iron, can solve the problems of low dissolved oxygen content, unsuitable microbial growth, difficult removal of iron and manganese, etc., to achieve operational The effect of convenient management, promotion of regional development, and small footprint

Inactive Publication Date: 2008-12-31
INST OF OCEANOLOGY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the content of iron and manganese in general groundwater is relatively high, it is difficult to remove iron and manganese by natural oxidation
The contact oxidation method has been proven to be the result of biological action, but so far, there is still no relatively mature process parameters for biological manganese removal, such as economic filtration

Method used

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  • Method and apparatus for removing overproof iron and manganese in underground seawater

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Example 1. refer to figure 1 . A method for removing iron and manganese exceeding the standard in underground seawater. The underground seawater extracted by a water pump first flows through a foam separator 1 for treatment, and passes through ozone O during treatment. 3 Aeration, using the strong oxidizing properties of ozone to oxidize divalent manganese ions and / or ferrous ions that are difficult to oxidize in water into sediments that are difficult to dissolve in water, and the formed sediments are intercepted and filtered by sand filter 4; The water is then adsorbed and filtered through cooked manganese sand, so as to complete the removal of excessive iron and manganese in the underground seawater.

Embodiment 2

[0028] Example 2. The concrete steps of the method described in embodiment 1 are as follows,

[0029] (1) Seawater to be treated enters the foam separator 1 through the pipeline, and the O 3 The gas is transported into the foam separator 1 through the Venturi gas-liquid mixing device 3; the ozone O 3 Mix with the seawater to be treated through the aeration disc 2 and undergo oxidation reaction to form sediment;

[0030] (2) After ozone O 3The treated seawater flows into the sand filter 4 through the pipeline, and the sand filter 4 is filled with quartz sand or other filter media with a particle size of 0.6-1.5mm. The sand filter 4 further processes the seawater treated by the foam separator 1, and intercepts and filters it. Suspended matter in water;

[0031] (3) The seawater treated by the sand filter 4 flows into the filter device 5 that cooked manganese sand is housed. In this device, ferrous iron and manganese that have not been oxidized completely are oxidized into hi...

Embodiment 3

[0032] Example 3. In the method described in embodiment 2, in step (1), ozone O 3 The precipitation formed by the oxidation treatment of underground seawater is regularly discharged through the blowdown valve at the bottom of the foam separator 1 .

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Abstract

The invention relates to a method for removing overproof iron and manganese from underground seawater and is characterized in that: underground seawater is pumped by a water pump and firstly flows through a foam separator to be treated; during the treatment, ozone O3 is pumped in for aeration, the strong oxidizing property of the ozone is used for oxidizing the bivalent manganous ions and/or bivalent ferrous irons which are difficult to be oxidized in water into insoluble precipitate, and the formed precipitate is removed by the interception, adsorption and filtration of a sand filter; the treated water is further filtered and adsorbed by mature manganese sand so as to remove the overproof iron and manganese from the underground seawater. The invention also discloses a device for removing the overproof iron and manganese from the underground seawater which is suitable for the removal method. The method and the device in the invention for removing the overproof iron and manganese from the underground seawater have rapid treatment, economical and applicable properties, small occupied space and convenient operation and management, can effectively remove the heavy metals in underground seawater such as iron, manganese, and the like, and break through technical bottleneck which affects and limits the normal production of aquaculture for a long time.

Description

technical field [0001] The invention relates to a method for treating underground seawater, in particular to a method for removing excess iron and manganese in underground seawater; the invention also discloses the removal method and an applicable device. Background technique [0002] Groundwater is an important water source for cities and towns and industrial and mining enterprises in our country. The quality of groundwater is good, and the water temperature is relatively stable. In mariculture production, because the temperature of groundwater is relatively constant and the water quality is good, most aquaculture enterprises and farmers choose it as aquaculture water. Fe and Mn, as essential elements for fish growth, will promote their growth and development at appropriate concentrations, but at higher concentrations, they will not only hinder their development, but also cause a series of diseases. According to relevant survey data, in northern my country There are varying...

Claims

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Application Information

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IPC IPC(8): C02F1/64C02F9/04C02F1/78C02F1/28
Inventor 刘鹰程波宋世敏宋世峰王朝夕张延青宋奔奔杨红生张涛周毅刘保忠张福绥
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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