Method for treating sewage generated during fluorescent penetrant testing

A fluorescent infiltration and treatment method technology, which is applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve limited flocculation, transportation and treatment difficulties, treatment Unstable effect and other problems, to meet the environmental protection requirements, convenient transportation and processing effect

Inactive Publication Date: 2014-02-05
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: first, the flocculation effect of this method is limited and the dosage is difficult to control, the treatment effect is extremely unstable, and the treated water cannot meet the environmental protection requirements
Second, the sediment is a hydrocolloid, which cannot be dehydrated and is difficult to transport and handle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Sampling 1000ml of sewage generated by fluorescence penetrant testing into a container, adding water treatment flocculant RM-10 produced by CETCO Company of the United States to the sewage, adding 20g, and stirring for 2 minutes;

[0018] 2. Add calcium hypochlorite to 1000ml of sewage sample, add 12g, stir for 2min, filter with activated carbon after settling for 5 minutes, filter the filtered water with activated carbon again, the COD value of the treated sewage is measured to be 135mg / L, meeting emission requirements.

[0019] 3. The sediment produced after filtration is dehydrated to become solid waste and sent to the environmental protection department for processing.

Embodiment 2

[0021] 1. Sampling 1000ml of sewage generated by fluorescence penetrant testing into a container, adding water treatment flocculant RM-10 produced by CETCO Company of the United States to the sewage, adding 25g, and stirring for 2 minutes;

[0022] 2. Add calcium hypochlorite to 1000ml of sewage sample, add 10g, stir for 2min, filter with activated carbon after sedimentation for 5 minutes, and filter with activated carbon again for the filtered water, the COD value of the treated sewage is measured to be 180mg / L, meeting emission requirements.

[0023] 3. The sediment produced after filtration is dehydrated to become solid waste and sent to the environmental protection department for processing.

Embodiment 3

[0025] 1. Sampling 1000ml of sewage generated by fluorescence penetrant testing into a container, adding water treatment flocculant RM-10 produced by CETCO, USA, to the sewage, adding 30g, and stirring for 2 minutes;

[0026] 2. Add calcium hypochlorite to 1000ml of sewage sample, add 8g, stir for 2min, filter with activated carbon after settling for 5 minutes, filter the filtered water with activated carbon again, the COD value of the treated sewage is measured to be 220mg / L, meeting emission requirements.

[0027] 3. The sediment produced after filtration is dehydrated to become solid waste and sent to the environmental protection department for processing.

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PUM

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Abstract

The invention belongs to an environment engineering technology and relates to an improved method for treating sewage generated during fluorescent penetrant testing. The method is characterized by comprising the following treatment steps: adding a water treatment flocculant into sewage; adding calcium hypochlorite into the sewage; treating the filtered precipitate. The invention provides a sewage treatment method through which the sewage generated during fluorescent penetrant testing can be effectively treated and the precipitate can be dehydrated into solids, and the environment-friendly requirements are met. Meanwhile, the precipitate is convenient to transport and treat.

Description

technical field [0001] The invention belongs to the environmental engineering technology, and relates to the improvement of the treatment method for the sewage produced by the fluorescence penetrant detection. Background technique [0002] The fluorescent liquid used in fluorescent penetrant testing is a solution composed of petroleum, fluorescent dyes, surfactants and other additional components. The solvents that account for its main components are all petroleum products. Fluorescent sewage produced during the cleaning process during the inspection usually has an oil content as high as 200mg-1000mg / L and a COD of 2500mg-10000mg / L, while the COD requirement in DB11 / 307-2005 is less than 500mg / L. [0003] Direct discharge of oily and fuel-containing sewage into water bodies will seriously pollute the environment, destroy ecological balance and endanger human health. Therefore, many countries in the world have regulated and restricted the discharge concentration of oily and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F11/12
Inventor 葛子亮王树志贾玉军叶冠霆乔海燕赵梦任学冬
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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