Device for treating carbon tetrachloride in groundwater with spiral-flow aeration method, and carbon tetrachloride removing method

A carbon tetrachloride, groundwater technology, applied in biological treatment devices, chemical instruments and methods, contaminated groundwater/leachate treatment, etc., can solve the problems of short effective adsorption life, high cost of nanotechnology, lack of oxygen, etc. To achieve the effect of compact and practical equipment, scientific processing method and small footprint

Inactive Publication Date: 2016-10-26
XUZHOU TENGRUI INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The disadvantage of this method is that its adsorption efficiency is unstable, the effect is good when the carbon tetrachloride residue is at a low concentration, the treatment is unstable at a high concentration, the effective adsorption life is short, and the carrier needs to be desorbed twice before it can be recycled. And through the solution after solvent desorption, a mixture containing 1,2-dichloropropane is formed
Therefore, its shortcoming is that there is a lack of oxygen as an electron acceptor in this environment, and at the same time, the supply of microbial nutrients is insufficient, which also makes the microbial biodegradation unsustainable.
[0016] Its shortcomings are that the permeable reaction wall is easy to be blocked, the natural environmental conditions such as the redox potential in the laboratory are easily damaged, and the operation and maintenance are relatively complicated. In addition, the cost of bimetallic systems and nanotechnology is relatively high. Factors hinder the further development and vigorous promotion of permeable reactive walls

Method used

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  • Device for treating carbon tetrachloride in groundwater with spiral-flow aeration method, and carbon tetrachloride removing method
  • Device for treating carbon tetrachloride in groundwater with spiral-flow aeration method, and carbon tetrachloride removing method
  • Device for treating carbon tetrachloride in groundwater with spiral-flow aeration method, and carbon tetrachloride removing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] In parts by weight, and according to the following steps to manufacture the polymer mediated filler 4-4 of the present invention:

[0062]Step 1. Add 500 parts of ultrapure water with a conductivity of 0.005μS / cm into the reactor, start the stirrer in the reactor at a speed of 100rpm, and start the heating pump to raise the temperature in the reactor to 60°C; add in sequence 5 parts of ethyl glycolate, 5 parts of ethyl lactate, and 5 parts of ethyl oleate were stirred until completely dissolved, the pH value was adjusted to 6.5, the speed of the agitator was adjusted to 50 rpm, the temperature was 40°C, and the esterification reaction was carried out for 2 hours;

[0063] Step 2: Take 20 parts of ethyl propionate and 5 parts of ethyl n-heptanoate for crushing, the particle size of the powder is 200 mesh; add 100 parts of nano-level palladium borate and mix evenly, spread it on the tray, the thickness of the laying is 5mm , using α-ray irradiation with a dose of 1.0kGy a...

Embodiment 2

[0069] In parts by weight, and according to the following steps to manufacture the polymer mediated filler 4-4 of the present invention:

[0070] Step 1. Add 1500 parts of ultrapure water with a conductivity of 0.04μS / cm into the reactor, start the stirrer in the reactor at a speed of 150rpm, and start the heating pump to raise the temperature in the reactor to 90°C; add in sequence 10 parts of ethyl glycolate, 15 parts of ethyl lactate, and 10 parts of ethyl oleate were stirred until completely dissolved, and the pH value was adjusted to 8.0. The speed of the agitator was adjusted to 80 rpm, the temperature was 50°C, and the esterification reaction was carried out for 9 hours;

[0071] Step 2: Take 30 parts of ethyl propionate and 10 parts of ethyl heptanoate for crushing, the particle size of the powder is 450 mesh; add 150 parts of nano-scale palladium borate and mix evenly, spread it on the tray, the thickness of the laying is 15mm , irradiate with α-rays with a dose of 2....

Embodiment 3

[0077] In parts by weight, and according to the following steps to manufacture the polymer mediated filler 4-4 of the present invention:

[0078] Step 1. Add 600 parts of ultrapure water with a conductivity of 0.0058μS / cm into the reactor, start the stirrer in the reactor at a speed of 140rpm, and start the heating pump to raise the temperature in the reactor to 68°C; 8 parts of ethyl glycolate, 8 parts of ethyl lactate, 8 parts of ethyl oleate, stir until completely dissolved, adjust the pH value to 6.8, adjust the speed of the stirrer to 58rpm, the temperature is 48°C, and the esterification reaction takes 8 hours;

[0079] Step 2: Take 28 parts of ethyl propionate and 8 parts of ethyl heptanoate for crushing, the particle size of the powder is 280 mesh; add 140 parts of nano-scale palladium borate and mix evenly, spread it on the tray, the thickness of the laying is 10mm , using α-ray irradiation with a dose of 1.4kGy and an energy of 1.25MeV for 25min;

[0080] The third ...

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Abstract

The invention discloses a device for treating carbon tetrachloride in groundwater with a spiral-flow aeration method, and a carbon tetrachloride removing method. The device comprises a buffering rank, a water inlet device, a spiral-flow device, a carbon tetrachloride separation device, an aeration device, a clear water outlet pipe, a catalysis detector, a sludge discharge pipe, a support, and a control system. The buffering tank is arranged on the bottom of the support. The spiral-flow device and the carbon tetrachloride separation device are arranged on the upper part of the support. The bottom of the buffering tank and the middle part of one side of the spiral-flow device are connected through the water inlet device. The top center of the spiral-flow device and one side of the carbon tetrachloride separation device are connected through a pipe. The aeration device is connected to the upper part of the spiral-flow device. The sludge discharge pipe is arranged on the bottom of the spiral-flow device. The clear water outlet pipe and the catalysis detector are arranged on the upper part of the front side of the carbon tetrachloride separation device. The control system is also arranged on the support. The catalysis detector is connected with the control system through a lead wire. The device used for treating carbon tetrachloride in groundwater adopts the spiral-flow aeration method, and has the advantages of low energy consumption, high treatment efficiency, and low land occupation. The device is suitable to be used for treating groundwater containing carbon tetrachloride.

Description

technical field [0001] The invention belongs to the field of groundwater pollution treatment devices, and in particular relates to a device for treating carbon tetrachloride in groundwater by a cyclone aeration method. Background technique [0002] Carbon tetrachloride is a colorless liquid with a boiling point of 132.2°C. During the First World War, it was mainly used to produce picric acid for military explosives. From 1940 to 1960, it was widely used in the production of DDT (DDT) pesticides. After 1960, DDT was gradually replaced by other pesticides with high efficiency and low residual toxicity. The demand for carbon tetrachloride decreased day by day, mainly used as ethyl fiber It can be used as a solvent for ketones and many resins, and produce a variety of other benzene-based intermediates, such as nitrocarbon tetrachloride, etc. [0003] Carbon tetrachloride has inhibitory and anesthetic effects on the central nervous system; it is irritating to the skin and mucou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F7/00C02F3/10A62D3/00C08K13/02C08K3/38C08K5/18C08K5/101C02F101/12C02F103/06A62D101/22
CPCA62D3/00A62D2101/22C02F3/108C02F7/00C02F2101/12C02F2103/06C02F2203/006C08K3/38C08K5/101C08K5/18C08K13/02C08K2003/387C08K2201/003C08K2201/011Y02W10/10
Inventor 梁峙梁骁
Owner XUZHOU TENGRUI INTELLIGENT EQUIP CO LTD
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