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Composite micro-electrolysis filler for treating the hardly degradable wastewater and preparation method thereof

A wastewater treatment and micro-electrolysis technology, applied in water/sewage treatment equipment, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of weak COD removal ability, low use efficiency, and easy occurrence of hardening, etc. Achieving the effect of being beneficial to industrialized large-scale production, improving efficiency and enhancing adsorption effect

Inactive Publication Date: 2017-05-31
CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current iron-carbon micro-electrolytic fillers still have problems such as low efficiency, weak COD removal ability, and easy hardening. It is necessary to develop micro-electrolytic fillers with better COD removal and decolorization effects and more stable performance.
[0006] The micro-electrolytic filler is made of iron and carbon, but this kind of filler is easy to harden and has low processing efficiency; people use high-temperature sintered filler to overcome this defect, but there is a disadvantage of high production cost. Therefore, it is necessary to develop a Low burn-free filler is very important

Method used

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  • Composite micro-electrolysis filler for treating the hardly degradable wastewater and preparation method thereof
  • Composite micro-electrolysis filler for treating the hardly degradable wastewater and preparation method thereof

Examples

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Embodiment 1

[0035] Example 1: A composite micro-electrolytic filler for refractory wastewater treatment and its preparation method

[0036] A composite micro-electrolytic filler for refractory wastewater treatment, prepared from the following components by weight: 45 parts of iron powder; 15 parts of activated carbon powder; 8 parts of cerium powder; 8 parts of lanthanum powder; 15 parts of sodium bentonite; 10 parts of polyaluminum chloride; 10 parts of Portland cement. Wherein, the particle diameter of iron powder is 2-5mm; The diameter of described activated carbon powder, cerium powder, lanthanum powder is 60-80 mesh; The diameter of described sodium bentonite is 200 mesh; The diameter of described molecular sieve is 1- 2mm; the polyaluminum chloride is a yellow powder with a basicity of more than 50% and an Al2O3 content of more than 9.5%.

[0037] The preparation method of the micro-electrolytic filler for the treatment of difficult-to-biochemical wastewater comprises the following...

Embodiment 2

[0042] Example 2: Comparative test of micro-electrolytic fillers prepared by the present invention and commercially available micro-electrolytic fillers for refractory wastewater treatment

[0043] In 2 parallel cylindrical reactors (high 80cm, diameter 10cm), add aeration head, pack into respectively the micro-electrolysis filler that the embodiment 1 of 50cm prepares and commercially available micro-electrolysis filler, respectively to 4 Add waste water from the printing and dyeing industry (COD is 4200mg / L, chromaticity is 2000 times) into a reactor, add to the 60cm of the reactor, open the aeration, control the dissolved oxygen to 2mg / L, after 2 hours of reaction, Let it settle for 30 minutes, take the supernatant, and test the COD and chromaticity.

[0044] Table 1 Comparative test results of refractory wastewater treatment

[0045]

[0046] From the above results, it can be seen that when treating refractory wastewater, the COD degradation rate of the micro-electroly...

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Abstract

The invention provides a composite micro-electrolysis filler for treating the hardly degradable wastewater, and the filler is prepared from the following raw materials in parts by weight: 45 parts of iron powder, 15 parts of activated carbon powder, 8 parts of cerium powder, 8 parts of lanthanum powder, 15 parts of sodium bentonite, 10 parts of polyaluminium chloride, 10 parts of portland cement and 5 parts of cetyl trimethyl ammonium bromide. A preparation method comprises the following steps: weighing, uniformly mixing, adding water, extruding and forming, maintaining, modifying and the like, the micro-electrolysis filler is high in wastewater treatment efficiency, low in using cost, simple and convenient, and suitable for large-area popularization and application.

Description

[0001] Technical field: [0002] The invention relates to the technical field of wastewater treatment, in particular to a composite micro-electrolytic filler for refractory wastewater treatment and a preparation method thereof. [0003] technical background: [0004] In the treatment technology of refractory industrial wastewater, micro-electrolysis technology is being paid more and more attention, and has been applied in engineering practice. The working principle of micro-electrolysis is based on the joint action of electrochemistry, redox, physical adsorption and flocculation to treat wastewater. The method has the advantages of wide application range, good treatment effect, low cost, convenient operation and maintenance, and no need to consume power resources. [0005] At present, the traditional micro-electrolysis technology mostly uses a simple mixture of iron filings and activated carbon as the micro-electrolysis material. In the actual engineering application process, ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/56C02F1/28
CPCC02F1/46104C02F1/281C02F1/56C02F2201/461
Inventor 张柏林易师
Owner CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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