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Regeneration method of activated carbon in organosilicon wastewater treatment

A wastewater treatment and organosilicon technology, applied in the fields of adsorption water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of increasing wastewater treatment costs, unrecoverable activated carbon, and secondary environmental pollution and other problems, to achieve the effect of reducing the cost of sewage treatment, improving the efficiency is not high, and the ability is unique

Inactive Publication Date: 2011-04-20
ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the used activated carbon cannot be recycled. In addition to increasing the cost of wastewater treatment, it will also cause secondary pollution to the environment.

Method used

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  • Regeneration method of activated carbon in organosilicon wastewater treatment
  • Regeneration method of activated carbon in organosilicon wastewater treatment
  • Regeneration method of activated carbon in organosilicon wastewater treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Effect of electric field on microbial growth and metabolism in organosilicon wastewater

[0028] Static pressure treatment of strain tank: used to cultivate microorganisms and create a living environment for microorganisms. The ionosphere is in the form of an electrode column probe, surrounded by a ring of concrete around the electrode, the electrode column is connected to the positive pole of the DC power supply, and the concrete layer is connected to the negative pole of the DC power supply (see attached figure 1 ), the distance from the electrode to the concrete side wall is 0.5m, and the built-in nutrient solution is prepared according to the following composition: glucose: 4g; urea: 0.3g; ferric chloride: 0.1g; dipotassium hydrogen phosphate: 0.07g; potassium dihydrogen phosphate 0.2g; MS trace element mother solution 1mL (KI 0.083g, Na 2 MoO 4 2H 2 O 0.025g, H 3 BO 3 0.62g, CuSO 4 ·5H 2 O0.0025g, MnSO 4 ·H 2 O 1.69g, CoCl 2 6H2O 0.0025g, ZnSO ...

Embodiment 2

[0032]The strain tank is the same as in Example 1, the distance from the electrode to the concrete side wall is 0.5m, and the built-in nutrient solution is prepared according to the following composition: glucose: 4g; urea: 0.3g; ferric chloride: 0.1g; dipotassium hydrogen phosphate: 0.07 g; potassium dihydrogen phosphate 0.2g; MS trace element mother solution 1mL; tap water 1000ml, pH 7.5.

[0033] Take the activated sludge from the biochemical treatment of organosilicon wastewater, add it into the nutrient solution (addition amount 20g / L), apply an electric field of 20mA in the nutrient solution, and incubate at 28-30°C for 18h;

[0034] Silicone wastewater treatment:

[0035] Organosilicon wastewater with a COD value of 36000mg / L first enters the biochemical tank, the effluent passes through the coagulation tank, is precipitated by milk of lime, and then enters the sedimentation tank. The residual wastewater is adsorbed with activated carbon, and the wastewater after adsorp...

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Abstract

The invention provides a regeneration method of activated carbon in organosilicon wastewater treatment. The biological activated carbon regeneration method of the invention aims to the organosilicon wastewater and improves the microbial degradation rate in an electromotive power strengthening process so as to improve the defects of low efficiency of microbial regenerated activated carbon. The regenerated activated carbon loss is not great because the regenerated activated carbon is not treated by high temperature treatment or subsequent processes but by short-time heat treatment, the absorption capability is not greatly decreased, and the use cycle of the activated carbon multiplies a general absorption cycle. Moreover, the electricity consumption is lower than an electrochemical regeneration method. The method is utilized to regenerate the activated carbon adsorbing the organosilicon wastewater and effectively decreases the wastewater treatment cost without generating secondary pollution, the activated carbon is combined with biochemical treatment for organosilicon wastewater treatment to have high speed and strong capability of removing COD (Chemical Oxygen Demand) and BOD5 (Biochemical Oxygen Demand 5) and unique capability of removing difficult degradable organic matter.

Description

(1) Technical field [0001] The invention relates to a method for regenerating activated carbon in organic silicon wastewater treatment. (2) Background technology [0002] Regarding the treatment of organic silicon wastewater, neutralization precipitation method is mostly used at home and abroad, which can barely meet the third-level standard. This method consumes a lot of chemicals and has high treatment costs; the COD effluent exceeds the standard and the amount of sludge is large. There is also a combined process of iron scrap fluidized bed pretreatment, supported activated carbon catalyst catalytic oxidation and coagulation sedimentation, but the removal rate of COD is not high. Also have the reaction that adopts Fenton's reagent, this reagent has extremely strong oxidation ability, and processing effect is better, but reagent cost is high. [0003] Activated carbon is a non-toxic, odorless, excellent adsorbent with a well-developed pore structure and a large specific su...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/34C02F9/14C02F1/28
Inventor 郑展望丁青松
Owner ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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