CN104609594A - A coprocessing method for wastewater of flaw detection by colouring and acid washing wastewater - Google Patents
A coprocessing method for wastewater of flaw detection by colouring and acid washing wastewater Download PDFInfo
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- CN104609594A CN104609594A CN201410809752.2A CN201410809752A CN104609594A CN 104609594 A CN104609594 A CN 104609594A CN 201410809752 A CN201410809752 A CN 201410809752A CN 104609594 A CN104609594 A CN 104609594A
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Abstract
The invention relates to a coprocessing method for wastewater of flaw detection by colouring and acid washing wastewater, and belongs to the technical field of environment protection engineering. The method includes: subjecting the wastewater of flaw detection by colouring to ozone oxidation to obtain a first solution, adding the acid washing wastewater to obtain a second solution, adding a NaOH solution to adjust the pH value to obtain a third solution, performing solid-liquid separation to obtain a fourth solution, adsorbing by activated carbon to obtain a fifth solution, adding hydrochloric acid to adjust the pH value to be 7, and discharging. The method fully utilizes characteristics of the wastewater of flaw detection by colouring and the acid washing wastewater which are produced in detection and maintenance processes of metal workpieces, treats waste by using waste, reduces processing devices, reduces the cost for construction and operation, and is simple in operation and management.
Description
Technical field
The present invention relates to the cooperative processing method of a kind of penetrant inspection waste water and pickling waste waters, belong to environmental engineering technical field.
Background technology
When metal works existing defects or crack, can work-ing life be affected, also there is certain potential safety hazard, need to carry out nondestructive test.Dye-penetrant inspection is a kind of simple and effective detection means, basic procedure is: red permeate agent is coated in tested surface, if existing defects, permeate agent infiltrates in defect under capillary action, then remove unnecessary permeate agent on tested surface, then be coated with last layer developer, in defect, permeate agent is just sucked out, form the defect image be exaggerated, under white light, observe defect video picture.The waste liquid that this process produces is due to containing permeate agent and developer, and manifest redness, turbidity is high, and containing large amount of organic, chemical oxygen demand (COD) (hereinafter referred to as COD) is at about 2000mg/L.This wastewater biodegradability is low, lacks the nutritive elements such as nitrogen phosphorus, and use the biological treatment such as activated sludge process, biological contact oxidation process, water outlet COD is higher, is difficult to reach emission standard.
Metal works, when keeping in repair, needs hydrochloric acid soln to soak to remove surface oxidation-resistant material, and then carries out next repair.In immersion process, metallic element such as Fe, Al, Ni, Co etc. of workpiece surface enter in acid solution.Acid solution repeatedly needs to change at Reusability afterwards, and the pickling waste waters of generation is light green, and pH is between 0.5 ~ 2.0.Contained by this pickling waste waters, metallic element kind is more, and change in concentration is large, and removal process is complicated and cost is higher.This waste water generally discharges after adjusting pH to neutrality, but this method heavy metals removal effect is poor.
The process mainly separately process of trade effluent, the characteristic for various waste water selects respective method to process respectively; Or various wastewater mixes, general superposes by some technique, does not consider the feature of respective waste water, treatment scheme is long, energy expenditure is large, running cost is high.
Summary of the invention
The object of the invention is the cooperative processing method proposing a kind of penetrant inspection waste water and pickling waste waters, make full use of the respective characteristic of the metal works penetrant inspection waste water that produces and pickling waste waters in inspection and maintenance process, the treatment of wastes with processes of wastes against one another, reduces treatment facility, reduces processing cost.
The cooperative processing method of the penetrant inspection waste water that the present invention proposes and pickling waste waters, the method comprises the following steps:
(1) carry out ozone Oxidation Treatment to penetrant inspection waste water, obtain the first solution, the ozonation aerated time is 2 ~ 5 hours, and ozone dosage is that every cubic metre of waste water is more than or equal to 500 grams;
(2) in the first solution of above-mentioned steps (1), pickling waste waters is added, the volume ratio of pickling waste waters and the first solution is: Suan washes Fei Shui ︰ first solution=1 ︰ (1 ~ 2), mix with stirrer, obtain the second solution, the NaOH solution that concentration is 10 ~ 20% is added again in the second solution, adjust pH to 9 ~ 10, obtain the 3rd solution;
(3) solid-liquid separation is carried out to the 3rd solution of above-mentioned steps (2), the liquid that solid-liquid separation obtains is filtered, obtain the 4th solution;
(4) adsorb with the 4th solution of gac to above-mentioned steps (3), adsorption time is 30 ~ 45 minutes, obtains the 5th solution, the cocoanut active charcoal that described gac is particle diameter 10-24 order, iodine number is greater than 1000mg/L;
(5) in the 5th solution of above-mentioned steps (4), the hydrochloric acid that concentration is 10% is added, after adjust pH to 7, discharge.
The cooperative processing method of the penetrant inspection waste water that the present invention proposes and pickling waste waters, its advantage is: first utilize ozone oxidation to remove most of organism in penetrant inspection waste water, then utilize the heavy metal ion in pickling waste waters and OH
-the Fe (OH) formed
2, Ni (OH)
2etc. precipitation, partial organic substances in adsorption coloring flaw detection waste water, when solid-liquid separation, organism removes from water with solid precipitation, utilizes pickling waste waters process penetrant inspection waste water, achieves the treatment of wastes with processes of wastes against one another.Finally re-use charcoal absorption, remove the organism in mixed waste liquor further, guarantee that standard water discharge is discharged.The inventive method makes full use of the respective characteristic of the metal works penetrant inspection waste water that produces and pickling waste waters in inspection and maintenance process, the treatment of wastes with processes of wastes against one another, reduces treatment facility, reduces and controls useless cost, reduces construction and running cost, operation and manage more simple.
Embodiment
The cooperative processing method of the penetrant inspection waste water that the present invention proposes and pickling waste waters, comprises the following steps:
(1) penetrant inspection waste water carries out ozone Oxidation Treatment in ozone reaction tower, obtains the first solution, and the ozonation aerated time is 2 ~ 5 hours, and ozone dosage is that every cubic metre of waste water is more than or equal to 500 grams;
(2) in the first solution of above-mentioned steps (1), pickling waste waters is added, the volume ratio of pickling waste waters and the first solution is: Suan washes Fei Shui ︰ first solution=1 ︰ (1 ~ 2), mix with stirrer, obtain the second solution, the NaOH solution that concentration is 10 ~ 20% is added again in the second solution, adjust pH to 9 ~ 10, obtain the 3rd solution;
(3) solid-liquid separation is carried out to the 3rd solution of above-mentioned steps (2), the liquid that solid-liquid separation obtains is filtered, obtain the 4th solution;
(4) adsorb with the 4th solution of gac to above-mentioned steps (3), adsorption time is 30 ~ 45 minutes, obtains the 5th solution, the cocoanut active charcoal that described gac is particle diameter 10-24 order, iodine number is greater than 1000mg/L;
(5) in the 5th solution of above-mentioned steps (4), the hydrochloric acid that concentration is 10% is added, after adjust pH to 7, discharge.
Below introduce the embodiment of the inventive method:
Embodiment 1:
(1) penetrant inspection waste water carries out ozone Oxidation Treatment at ozone reaction tower, and the ozonation aerated time is 3h, 1m
3waste water by ozone dosage is about 600g, obtains the first solution;
(2) the first solution of above-mentioned steps (1) is added pickling waste waters mixing, pickling waste waters and the first liquor capacity ratio are 1 ︰ 1, mix with stirrer, obtain the second solution, in the second solution, add the NaOH solution of 20% again, adjust pH to 9, obtains the 3rd solution;
(3) the 3rd solution of above-mentioned steps (2) is first carried out solid-liquid separation through plate-and-frame filter press, then filter through quartz filter, obtain the 4th solution;
(4) the 4th solution of above-mentioned steps (3) is adsorbed through activated carbon adsorber, residence time 30min, obtains the 5th solution, select 10-24 order particle diameter, cocoanut active charcoal that iodine number is greater than 1000mg/L;
(5) the 5th solution of above-mentioned steps (4) is added the hydrochloric acid of 10%, discharge after adjust pH to 7.
Embodiment 2:
(1) penetrant inspection waste water carries out ozone Oxidation Treatment at ozone reaction tower, and the ozonation aerated time is 2.5h, 1m
3waste water by ozone dosage is about 500g, obtains the first solution;
(2) the first solution of above-mentioned steps (1) is added pickling waste waters mixing, pickling waste waters and the first liquor capacity ratio are 1 ︰ 1.5, mix with stirrer, obtain the second solution, the NaOH solution of 15% is added again in the second solution, adjust pH to 10, obtains the 3rd solution;
(3) the 3rd solution of above-mentioned steps (2) is first carried out solid-liquid separation through plate-and-frame filter press, then filter through quartz filter, obtain the 4th solution;
(4) the 4th solution of above-mentioned steps (3) is adsorbed through activated carbon adsorber, residence time 40min, obtains the 5th solution, select 10-24 order particle diameter, cocoanut active charcoal that iodine number is greater than 1000mg/L;
(5) the 5th solution of above-mentioned steps (4) is added the hydrochloric acid of 10%, discharge after adjust pH to 7.
Embodiment 3:
(1) penetrant inspection waste water carries out ozone Oxidation Treatment at ozone reaction tower, and the ozonation aerated time is 2.7h, 1m
3waste water by ozone dosage is about 540g, obtains the first solution;
(2) the first solution of above-mentioned steps (1) is added pickling waste waters mixing, pickling waste waters and the first liquor capacity ratio are 1 ︰ 2, mix with stirrer, obtain the second solution, the NaOH solution of 10% is added again in the second solution, adjust pH to 9.5, obtains the 3rd solution;
(3) the 3rd solution of above-mentioned steps (2) is first carried out solid-liquid separation through plate-and-frame filter press, then filter through quartz filter, obtain the 4th solution;
(4) the 4th solution of above-mentioned steps (3) is adsorbed through activated carbon adsorber, residence time 45min, obtains the 5th solution, select 10-24 order particle diameter, cocoanut active charcoal that iodine number is greater than 1000mg/L;
(5) the 5th solution of above-mentioned steps (4) is added the hydrochloric acid of 10%, discharge after adjust pH to 7.
The treatment effect of above-mentioned three embodiments is as shown in table 1, therefrom can find out, after two kinds of waste water use present method process, water outlet heavy metal and COD all reach emission standard.
Water quality before and after table 1 penetrant inspection waste water and pickling waste waters process
In above-mentioned example, the ozone reactor of use is produced by Fujian New Continent Environmental Protection Technology Co., Ltd, and model is NLO-200, and ozone generation amount is 200g/h; Use plate-and-frame filter press to be produced by Kun Gong environmental protection machinery company limited of city of Kunshan, model is B
a mq6/450-30U; The gac used is produced by Beijing Ke Cheng brilliance Technew SA, and particle diameter is 10-24 order, and iodine number is greater than 1000mg/L; Ozone reaction tower, quartz filter, activated carbon adsorber, by the design of Heilungkiang Guo Zhong water utilities limited-liability company, are preced with wrapping mechanism company limited by Langfang in Hebei Province hundred and are processed.
Claims (1)
1. a cooperative processing method for penetrant inspection waste water and pickling waste waters, is characterized in that the method comprises the following steps:
(1) carry out ozone Oxidation Treatment to penetrant inspection waste water, obtain the first solution, the ozonation aerated time is 2 ~ 5 hours, and ozone dosage is that every cubic metre of waste water is more than or equal to 500 grams;
(2) in the first solution of above-mentioned steps (1), pickling waste waters is added, the volume ratio of pickling waste waters and the first solution is: Suan washes Fei Shui ︰ first solution=1 ︰ (1 ~ 2), mix with stirrer, obtain the second solution, the NaOH solution that concentration is 10 ~ 20% is added again in the second solution, adjust pH to 9 ~ 10, obtain the 3rd solution;
(3) solid-liquid separation is carried out to the 3rd solution of above-mentioned steps (2), the liquid that solid-liquid separation obtains is filtered, obtain the 4th solution;
(4) adsorb with the 4th solution of gac to above-mentioned steps (3), adsorption time is 30 ~ 45 minutes, obtains the 5th solution, the cocoanut active charcoal that described gac is particle diameter 10-24 order, iodine number is greater than 1000mg/L;
(5) in the 5th solution of above-mentioned steps (4), the hydrochloric acid that concentration is 10% is added, after adjust pH to 7, discharge.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562873A (en) * | 2021-07-09 | 2021-10-29 | 吴江市宏达探伤器材有限公司 | Colorant wastewater treatment agent and colorant wastewater treatment method |
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| CN103553234A (en) * | 2013-10-21 | 2014-02-05 | 中国航空工业集团公司北京航空材料研究院 | Method for treating sewage generated during fluorescent penetrant testing |
| CN103755069A (en) * | 2014-01-03 | 2014-04-30 | 上海丰信环保科技有限公司 | Treatment method for reducing COD (chemical oxygen demand) value of cleaning station wastewater of fluorescent penetrant testing |
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2014
- 2014-12-23 CN CN201410809752.2A patent/CN104609594B/en active Active
Patent Citations (8)
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|---|---|---|---|---|
| JPH0747359A (en) * | 1993-08-06 | 1995-02-21 | Babcock Hitachi Kk | Water washable flaw detection waste liquid filter |
| US20020195397A1 (en) * | 2001-06-22 | 2002-12-26 | Teran Alfredo J. | Method for treating dye wastewater |
| CN101428871A (en) * | 2008-12-05 | 2009-05-13 | 同济大学 | Metallic face visible dye inspection wastewater decolorization apparatus |
| CN201999816U (en) * | 2010-12-02 | 2011-10-05 | 东莞市纯源水处理设备有限公司 | Electroplating wastewater processing device |
| CN102603098A (en) * | 2012-03-26 | 2012-07-25 | 北京科技大学 | Circular processing method of stainless steel acid washing waste liquid |
| CN202968286U (en) * | 2012-11-27 | 2013-06-05 | 南京苏环环境科技发展有限公司 | Sewage treatment equipment |
| CN103553234A (en) * | 2013-10-21 | 2014-02-05 | 中国航空工业集团公司北京航空材料研究院 | Method for treating sewage generated during fluorescent penetrant testing |
| CN103755069A (en) * | 2014-01-03 | 2014-04-30 | 上海丰信环保科技有限公司 | Treatment method for reducing COD (chemical oxygen demand) value of cleaning station wastewater of fluorescent penetrant testing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562873A (en) * | 2021-07-09 | 2021-10-29 | 吴江市宏达探伤器材有限公司 | Colorant wastewater treatment agent and colorant wastewater treatment method |
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Effective date of registration: 20200323 Address after: Beijing City 100080 square Haidian District Road No. 8 Building 304B strongchina Technology Patentee after: BEIJNG CHINA SCIENCES GUOYI ENVIRONMENTAL ENGINEERING Co.,Ltd. Address before: Located at the intersection of 161005 Street Bu Kui Qigihar city of Heilongjiang Province, Longsha district and Longhua Road (New Mart shopping plaza) 3 unit 25 floor of No. 8 Patentee before: HEILONGJIANG GUOZHONG WATER WORKS Co.,Ltd. |
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