CN103342424A - Advanced treatment process and equipment for refractory wastewater - Google Patents
Advanced treatment process and equipment for refractory wastewater Download PDFInfo
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- CN103342424A CN103342424A CN2013102952870A CN201310295287A CN103342424A CN 103342424 A CN103342424 A CN 103342424A CN 2013102952870 A CN2013102952870 A CN 2013102952870A CN 201310295287 A CN201310295287 A CN 201310295287A CN 103342424 A CN103342424 A CN 103342424A
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Abstract
The invention provides an advanced treatment process and equipment for refractory wastewater. The process comprises the following steps of: a, adding ammonium ferrous sulfate solution to a buffer tank and quickly and evenly mixing the ammonium ferrous sulfate solution with the refractory wastewater through high-speed rotation of the impeller of a water pump, and feeding the mixture into a water inlet in a catalytic oxidation reactor; b, adding hydrogen peroxide solution to the catalytic oxidation reactor, reacting for 3-8 min, and then guiding the wastewater to flow to an oxidizing flocculation basin via the water outlet of the catalytic oxidation reactor; c, performing aeration stirring for 30-45 min (degassing) in the oxidizing flocculation basin, regulating the pH value to 6.- 7.5 by using a pH regulating system, and adding a flocculating agent, and after reacting for 3-5 min, guiding the wastewater to flow to a sedimentation basin via the water outlet of the oxidizing flocculation basin; and d, precipitating wastewater for 4-6h in the sedimentation basin, thereby reaching the purpose of mud-water separation. The advanced treatment process has the advantages that the COD removal rate effect of the process is obvious in an environment without regulating the pH of the raw water, the dosage of acids and bases is saved and the operation cost is greatly reduced.
Description
Technical field
The present invention relates to the method that a kind of sewage disposal utilizes, belong to field of environment protection, relate in particular to a kind of advanced treatment process and equipment of used water difficult to degradate.
Background technology
In the middle of sewage disposal, contain and can not (be difficult for) being known as used water difficult to degradate by the pollutent that the removal of microorganisms in the activated sludge process falls, this waste water can cause serious pollution to receiving water body as not handling in line environment.At present, be mainly advanced oxidation processes for this wastewater treatment method, wherein Fenton process has characteristics such as efficient, applied widely, simple to operate, is widely used in this field.But traditional Fenton technology exists severe reaction conditions, must regulate the pH value to sour environment, causes consuming a large amount of soda acids, and running cost is high.
Summary of the invention
To the purpose of this invention is to provide and a kind ofly to exist severe reaction conditions in order solving in the existing used water difficult to degradate advanced treatment process, must regulate the pH value to sour environment, cause consuming a large amount of soda acids, a kind of used water difficult to degradate advanced treatment process and the equipment of problem such as running cost is high.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of used water difficult to degradate advanced treatment process, this technology comprises following steps:
A, copperas solution is joined in the Buffer Pool, by promoting the high-speed rotation of water pump impeller, reach and evenly the mixing fast of used water difficult to degradate, enter into the catalyst oxidation reactor water-in;
B, hydrogen peroxide solution is added to reacts 3-8min in the catalyst oxidation reactor, by the catalyst oxidation reactor water outlet from flowing to the oxidizing, flocculating pond;
C, the aeration agitation 30-45min(degassing in the oxidizing, flocculating pond), use the pH regulator system, regulating the pH value is 6.5-7.5, and adds flocculation agent, behind the reaction 3-5min, enters settling tank by the gravity flow of oxidizing, flocculating pond water outlet;
D, waste water through the 4-6h precipitation, reach the purpose of mud-water separation in settling tank.
According to above-mentioned a kind of used water difficult to degradate advanced treatment process, its characteristics are: in above-mentioned a step, the content that adds ferrous sulfate is 900-1600ppm.
A kind of equipment of used water difficult to degradate advanced treatment process, comprising: buffering pond, lifting water pump, catalyst oxidation reactor, oxidizing, flocculating pond, settling tank and ferrous sulfate medicine system, hydrogen peroxide medicine system, flocculation agent medicine system and pH regulator system, aerating system; Buffering pond, lifting water pump, catalyst oxidation reactor, oxidizing, flocculating pond are connected successively with settling tank; Wherein, the buffering pond is provided with used water difficult to degradate water-in and ferrous sulfate dosing mouth; Catalyst oxidation reactor is provided with water-in, water outlet, reaches the hydrogen peroxide dosing mouth; The oxidizing, flocculating pond is provided with aerating system (degasifying effect), flocculation agent and pH regulator system.
Advantage of the present invention is: technology of the present invention is under the environment of not regulating former water pH, and is obvious to the removal effect of COD, saved the consumption of soda acid, and running cost is reduced greatly.
Description of drawings
Fig. 1 is used water difficult to degradate advanced treatment process-catalyzed oxidation process flow sheet.
Embodiment
The invention will be further described below in conjunction with description of drawings and embodiment, but the protection domain that the present invention requires is not limited to the scope of embodiment statement;
Embodiment 1: be the raw pulp papermaking enterprise with timber, middle section water is through biochemical system (various forms anaerobism, aerobic process) water outlet COD≤250mg/L.
The waste water gravity flow enters the buffering pond, add the 1000ppm ferrous sulfate, after the lifting water pump impeller mixes, enter catalyst oxidation reactor, add the 100ppm hydrogen peroxide simultaneously, reaction 6min, gravity flow enters oxidizing, flocculating pond reaction 30min, adds alkali and adjusts pH value to 7.0, adds flocculation agent precipitation 5h, water outlet COD is 70mg/L, and the COD clearance is 72%.
Embodiment 2: with the alpha-cellulose that extracts from cellulosic materials such as timber and plant straw, or be raw material with the linters, through being processed into spinning solution, through the regenerated fiber enterprise that wet-spinning is made, waste water is through biochemical system (various forms anaerobism, aerobic process) water outlet COD≤400mg/L again.
The waste water gravity flow enters the buffering pond, add the 1500ppm ferrous sulfate, after the lifting water pump impeller mixes, enter catalyst oxidation reactor, add the 180ppm hydrogen peroxide simultaneously, reaction 8min, gravity flow enters oxidizing, flocculating pond reaction 40min, adds alkali and adjusts pH value to 7.0, adds flocculation agent precipitation 5h, water outlet COD is 100mg/L, and the COD clearance is 75%.
Embodiment 3: to process the printing and dyeing mill of cotton, fiber crops, man-made fiber and blending product thereof, waste water is through biochemical system (various forms anaerobism, aerobic process) water outlet COD≤180mg/L.
The waste water gravity flow enters the buffering pond, add the 1200ppm ferrous sulfate, after the lifting water pump impeller mixes, enter catalyst oxidation reactor, add the 130ppm hydrogen peroxide simultaneously, reaction 7min, gravity flow enters oxidizing, flocculating pond reaction 42min, adds alkali and adjusts pH value to 7.0, adds flocculation agent precipitation 5h, water outlet COD is 60mg/L, and the COD clearance is 67%.
This shows that under the environment of not regulating former water pH, catalyzed oxidation technology is obvious to the removal effect of COD, has saved the consumption of soda acid, and running cost is reduced greatly.
The invention has the beneficial effects as follows: the advanced treatment process of a kind of used water difficult to degradate of the present invention has solved traditional Fenton process severe reaction conditions, does not need reaction environment is transferred to acidity, reduces running cost.Used water difficult to degradate makes that by the advanced treatment system of catalyzed oxidation technology the COD removal effect in the waste water is obvious, and the biodegradability of waste water significantly improves.
Embodiment recited above is described preferred implementation of the present invention; be not that design of the present invention and protection domain are limited; under the prerequisite that does not break away from design concept of the present invention; common engineering technical personnel make technical scheme of the present invention in this area various modification and improvement all should fall into protection scope of the present invention.
Claims (3)
1. used water difficult to degradate advanced treatment process, this technology comprises following steps:
A, copperas solution is joined in the Buffer Pool, by promoting the high-speed rotation of water pump impeller, reach and evenly the mixing fast of used water difficult to degradate, enter into the catalyst oxidation reactor water-in;
B, hydrogen peroxide solution is added to reacts 3-8min in the catalyst oxidation reactor, by the catalyst oxidation reactor water outlet from flowing to the oxidizing, flocculating pond;
C, the aeration agitation 30-45min(degassing in the oxidizing, flocculating pond), use the pH regulator system, regulating the pH value is 6.5-7.5, and adds flocculation agent, behind the reaction 3-5min, enters settling tank by the gravity flow of oxidizing, flocculating pond water outlet;
D, waste water through the 4-6h precipitation, reach the purpose of mud-water separation in settling tank.
2. a kind of used water difficult to degradate advanced treatment process according to claim 1 is characterized in that: in above-mentioned a step, the content that adds ferrous sulfate is 900-1600ppm.
3. the equipment of a used water difficult to degradate advanced treatment process is characterized in that: comprising: buffering pond, lifting water pump, catalyst oxidation reactor, oxidizing, flocculating pond, settling tank and ferrous sulfate medicine system, hydrogen peroxide medicine system, flocculation agent medicine system and pH regulator system, aerating system; Buffering pond, lifting water pump, catalyst oxidation reactor, oxidizing, flocculating pond are connected successively with settling tank; Wherein, the buffering pond is provided with used water difficult to degradate water-in and ferrous sulfate dosing mouth; Catalyst oxidation reactor is provided with water-in, water outlet, reaches the hydrogen peroxide dosing mouth; The oxidizing, flocculating pond is provided with aerating system, flocculation agent and pH regulator system.
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| CN2013102952870A CN103342424A (en) | 2013-07-15 | 2013-07-15 | Advanced treatment process and equipment for refractory wastewater |
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| CN2013102952870A CN103342424A (en) | 2013-07-15 | 2013-07-15 | Advanced treatment process and equipment for refractory wastewater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601317A (en) * | 2013-11-20 | 2014-02-26 | 山东省环境保护科学研究设计院 | Interlock-control modular Fenton reagent wastewater treatment method and device |
| CN103663788A (en) * | 2013-12-11 | 2014-03-26 | 山东华亚环保科技有限公司 | Acid and alkali wastewater treatment technology |
| CN104129870A (en) * | 2014-07-18 | 2014-11-05 | 河南弘康环保科技有限公司 | Method for deep treatment on pharmacy waste water |
| CN105236625A (en) * | 2015-11-11 | 2016-01-13 | 苏州市环境保护有限公司 | Fenton printing-dyeing-wastewater deep treatment method |
| CN106116016A (en) * | 2016-06-24 | 2016-11-16 | 江苏艾特克环境工程设计研究院有限公司 | The advanced oxidation processing system of a kind of waste water and process thereof |
| CN107746085A (en) * | 2017-12-05 | 2018-03-02 | 广东省造纸研究所 | A kind of paper-making waste water treating agent and its method for handling paper waste |
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| CN101417834A (en) * | 2007-10-22 | 2009-04-29 | 周晖 | A kind of method of handling high-concentration organic industrial waste water |
| CN101503254A (en) * | 2009-03-18 | 2009-08-12 | 南京工业大学 | Technique for treating aeration lagoon remained papermaking black liquor by oxidation-coagulation method |
| CN101519251A (en) * | 2009-04-09 | 2009-09-02 | 广西大学 | Process for treating bio-refractory waste water by up-flow multi-phase oxidation column |
| CN101786756A (en) * | 2010-02-09 | 2010-07-28 | 广西博世科环保科技有限公司 | Process method for treating hardly-biodegradable organic wastewater |
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| JP2683991B2 (en) * | 1992-12-17 | 1997-12-03 | グンゼ株式会社 | Dyeing wastewater treatment method |
| CN101417834A (en) * | 2007-10-22 | 2009-04-29 | 周晖 | A kind of method of handling high-concentration organic industrial waste water |
| CN101503254A (en) * | 2009-03-18 | 2009-08-12 | 南京工业大学 | Technique for treating aeration lagoon remained papermaking black liquor by oxidation-coagulation method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601317A (en) * | 2013-11-20 | 2014-02-26 | 山东省环境保护科学研究设计院 | Interlock-control modular Fenton reagent wastewater treatment method and device |
| CN103601317B (en) * | 2013-11-20 | 2014-12-03 | 山东省环境保护科学研究设计院 | Interlock-control modular Fenton reagent wastewater treatment method and device |
| CN103663788A (en) * | 2013-12-11 | 2014-03-26 | 山东华亚环保科技有限公司 | Acid and alkali wastewater treatment technology |
| CN104129870A (en) * | 2014-07-18 | 2014-11-05 | 河南弘康环保科技有限公司 | Method for deep treatment on pharmacy waste water |
| CN105236625A (en) * | 2015-11-11 | 2016-01-13 | 苏州市环境保护有限公司 | Fenton printing-dyeing-wastewater deep treatment method |
| CN106116016A (en) * | 2016-06-24 | 2016-11-16 | 江苏艾特克环境工程设计研究院有限公司 | The advanced oxidation processing system of a kind of waste water and process thereof |
| CN107746085A (en) * | 2017-12-05 | 2018-03-02 | 广东省造纸研究所 | A kind of paper-making waste water treating agent and its method for handling paper waste |
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Application publication date: 20131009 |