CN102069089B - A method for automatically treating high concentrations of toxic organics in soil or water - Google Patents
A method for automatically treating high concentrations of toxic organics in soil or water Download PDFInfo
- Publication number
- CN102069089B CN102069089B CN2010105556843A CN201010555684A CN102069089B CN 102069089 B CN102069089 B CN 102069089B CN 2010105556843 A CN2010105556843 A CN 2010105556843A CN 201010555684 A CN201010555684 A CN 201010555684A CN 102069089 B CN102069089 B CN 102069089B
- Authority
- CN
- China
- Prior art keywords
- reactor
- water
- soil
- sulfuric acid
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000002689 soil Substances 0.000 title claims abstract description 33
- 231100000331 toxic Toxicity 0.000 title claims abstract description 23
- 230000002588 toxic effect Effects 0.000 title claims abstract description 23
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 58
- UMPKMCDVBZFQOK-UHFFFAOYSA-N potassium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[K+].[Fe+3] UMPKMCDVBZFQOK-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007800 oxidant agent Substances 0.000 claims abstract description 23
- 230000001590 oxidative effect Effects 0.000 claims abstract description 21
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 16
- 231100000719 pollutant Toxicity 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- 239000005416 organic matter Substances 0.000 claims description 13
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000006386 neutralization reaction Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 2
- 239000010865 sewage Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 18
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 7
- 231100001234 toxic pollutant Toxicity 0.000 abstract description 2
- 231100000419 toxicity Toxicity 0.000 abstract description 2
- 230000001988 toxicity Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010170 biological method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000010525 oxidative degradation reaction Methods 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical group [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
技术领域 technical field
本发明涉及一种污染物的处理方法，具体地说是一种通过化学氧化方法去除土壤或水中有毒有机物的方法。The invention relates to a method for treating pollutants, in particular to a method for removing toxic organic substances in soil or water through chemical oxidation.
背景技术 Background technique
随着经济的发展，有机化学品的种类和数量不断增加。有机化学品在生产、贮存、运输和使用过程中有时会发生泄漏事故，导致土壤和水环境点源污染。有些有机化学品，如农药、苯酚等属于有毒有机物，对环境及人体健康具有极大危害，对这类污染物必须进行快速处理，否则可能造成二次污染事故，扩大危害范围和危害程度。With the development of the economy, the types and quantities of organic chemicals continue to increase. During the production, storage, transportation and use of organic chemicals, leakage accidents sometimes occur, resulting in point source pollution of soil and water environment. Some organic chemicals, such as pesticides and phenol, are toxic organic substances that are extremely harmful to the environment and human health. Such pollutants must be dealt with quickly, otherwise secondary pollution accidents may be caused, and the scope and degree of harm may be expanded.
目前，土壤/水中有毒有机物点源污染处理方法主要包括：物理法、生物法、化学法等，针对污染面积较大，污染浓度极高的情况，采用物理法需要消耗的工程量大，成本也高，而生物法所需时间一般较长，且容易受到土壤结构、性质和环境条件变化的影响，特别是对有毒有害的难降解有机物，效果并不明显。而化学法较前面两种方法而言，具有对有毒有害污染物的高效性、反应迅速，操作简单，成本较低等优势。At present, the treatment methods for point source pollution of toxic organic substances in soil/water mainly include: physical method, biological method, chemical method, etc. For the situation where the polluted area is large and the pollution concentration is extremely high, the physical method needs to consume a large amount of engineering and the cost is also low. High, while the biological method generally takes a long time and is easily affected by changes in soil structure, properties and environmental conditions, especially for toxic and harmful refractory organic matter, the effect is not obvious. Compared with the previous two methods, the chemical method has the advantages of high efficiency for toxic and harmful pollutants, rapid response, simple operation, and low cost.
专利申请号为200610112930.1的发明专利文件中公开的“一种处理和修复污染场所或场地的方法”中所涉及的方法，所用试剂配置繁琐，反应剧烈，对pH要求苛刻。The method disclosed in the invention patent document with the patent application number 200610112930.1 "a method for treating and repairing polluted sites or sites" involves cumbersome configuration of reagents, violent reactions, and harsh pH requirements.
专利申请号为200810189870.2的发明专利中公开的“一种突发性有机污染事件处理的方法”所涉及的方法，对有机物选择性差，成本较高。The method disclosed in the invention patent with the patent application number 200810189870.2 "a method for handling sudden organic pollution incidents" has poor selectivity to organic matter and high cost.
专利申请号为2009100091596.X的发明专利中公开的“一种有机污染土壤的化学修复方法以及修复设备”中所涉及的方法和设备，处理效率低，对反应条件要求较高。The method and equipment involved in the "chemical remediation method and remediation equipment for organic polluted soil" disclosed in the invention patent with the patent application number 2009100091596.X have low processing efficiency and high requirements for reaction conditions.
因此，快速、高效、自动化程度高的处理有毒有机物点源污染土壤/水的方法是非常必要的。Therefore, a fast, efficient, and highly automated method for treating soil/water contaminated by point sources of toxic organic substances is very necessary.
发明内容 Contents of the invention
本发明的目的在于提供一种效率高、速度快，自动化程度，易于通过pH值控制实现自动控制的自动处理土壤或水中高浓度有毒有机物的方法。The purpose of the present invention is to provide a method for automatic treatment of high-concentration toxic organic matter in soil or water with high efficiency, high speed, automatic degree, and easy automatic control through pH value control.
本发明的目的是这样实现的：The purpose of the present invention is achieved like this:
1、将一定量的污染待处理物加至反应器中，加入量占反应器有效容积的1/4-1/2，旋转反应器，连续向反应器中投加高铁酸钾氧化剂，用2％的硫酸调节体系的pH值至7.0-9.0，反应器在旋转混合下对污染物进行降解处理，检测污染物的含量；1. Add a certain amount of pollutants to be treated into the reactor, the amount added accounts for 1/4-1/2 of the effective volume of the reactor, rotate the reactor, and continuously add potassium ferrate oxidant to the reactor, use 2 % sulfuric acid to adjust the pH value of the system to 7.0-9.0, and the reactor degrades the pollutants under rotating mixing, and detects the content of the pollutants;
2、氧化反应完成后的产物用2％的硫酸进行中和处理。2. The product after the oxidation reaction is completed is neutralized with 2% sulfuric acid.
所述的污染待处理物是污水，加入量占反应器有效容积的1/3-1/2，用2％的硫酸进行中和处理后排放。The polluting substance to be treated is sewage, the added amount accounts for 1/3-1/2 of the effective volume of the reactor, and it is discharged after being neutralized with 2% sulfuric acid.
所述的污染待处理物是污染土壤，加入量占反应器有效容积的1/4-1/2，并按土水体积比m∶V＝1∶0.5-1∶1加入水，用2％的硫酸进行中和处理后的泥水混合液经泥水分离器进行泥水分离，分离出的泥直接排入环境中，分离后的水回流至反应器循环使用。The polluted object to be treated is polluted soil, and the amount added accounts for 1/4-1/2 of the effective volume of the reactor, and water is added according to the soil-water volume ratio m:V=1:0.5-1:1, with 2% Sulfuric acid is used to neutralize the treated mud-water mixture through the mud-water separator for mud-water separation, and the separated mud is directly discharged into the environment, and the separated water is returned to the reactor for recycling.
所述用2％的硫酸调节体系的pH值至7.0-9.0的方法为：The method for adjusting the pH value of the system to 7.0-9.0 with 2% sulfuric acid is:
(1)预先确定反应器的pH控制区间的上限值A1为pH＝13.0、中间值A2为pH＝10.0和下限值A3为pH＝7.0；(1) The upper limit A1 of the pH control interval of the predetermined reactor is pH=13.0, the middle value A2 is pH=10.0 and the lower limit A3 is pH=7.0;
(2)在向反应器中投加高铁酸钾氧化剂的同时在线检测混合液的pH值，若测得的pH值超出设定pH值的上限时，停止加入氧化剂，等待2min后，开启酸液装置，以30mL/min的速率加入2％的硫酸；当pH值处于设定区间的中间值时，以2mL/min的速率加入2％的硫酸；若测得的pH值超出设定pH值的下限时，则关闭酸液装置，等待30s后，再次启动氧化剂加药装置；(2) While adding potassium ferrate oxidant to the reactor, check the pH value of the mixed solution online. If the measured pH value exceeds the upper limit of the set pH value, stop adding the oxidant, wait for 2 minutes, and turn on the acid solution device, add 2% sulfuric acid at a rate of 30mL/min; when the pH value is in the middle of the set range, add 2% sulfuric acid at a rate of 2mL/min; if the measured pH value exceeds the set pH value When the lower limit is reached, turn off the acid device, wait for 30s, and start the oxidant dosing device again;
(3)当加入氧化剂后，pH值缓慢上升，体系pH变化量ΔpH＝0.01～0.03/min时，关闭氧化剂阀门，氧化反应器停止工作；(3) After adding the oxidant, the pH value rises slowly, and when the system pH variation ΔpH=0.01～0.03/min, close the oxidant valve, and the oxidation reactor stops working;
(4)氧化反应完成后，以10mL/min的速率向混合液中加入2％的硫酸，直至pH降至预先设定的下限值，关闭酸液阀门，中和反应完成。(4) After the oxidation reaction is completed, add 2% sulfuric acid to the mixed solution at a rate of 10 mL/min until the pH drops to a preset lower limit, close the valve of the acid solution, and the neutralization reaction is completed.
本发明提供了一种以高铁酸钾为氧化剂处理有毒有机物点源污染土壤/水的处理方法，该方法具有效率高、速度快，自动化程度高等特点。自动控制通过pH值控制实现。The invention provides a treatment method for treating toxic organic point source polluted soil/water by using potassium ferrate as an oxidant. The method has the characteristics of high efficiency, high speed and high degree of automation. Automatic control is achieved by pH control.
本发明采用的氧化剂为高铁酸钾，该氧化剂具有氧化效率高、反应迅速、反应条件温和等特点，且高铁酸钾的反应产物为Fe(III)，对环境无害。本发明直接将固态的高铁酸钾加入到氧化反应器中。The oxidizing agent adopted in the present invention is potassium ferrate, and the oxidizing agent has the characteristics of high oxidation efficiency, rapid reaction, mild reaction conditions, etc., and the reaction product of potassium ferrate is Fe(III), which is harmless to the environment. The present invention directly adds solid potassium ferrate into the oxidation reactor.
本发明采用的中和剂为2％的稀硫酸。The neutralizing agent used in the present invention is 2% dilute sulfuric acid.
本发明的处理工艺由加药单元、污染物处理单元和pH控制单元组成。The treatment process of the invention consists of a dosing unit, a pollutant treatment unit and a pH control unit.
加药单元包括氧化剂罐、酸罐；污染物处理单元包反应器、泥水分离器、液体回流装置；控制单元包括信号采集、处理和反馈控制。The dosing unit includes an oxidant tank and an acid tank; the pollutant treatment unit includes a reactor, a mud-water separator, and a liquid return device; the control unit includes signal acquisition, processing, and feedback control.
本发明通过pH信号进行自动控制。其原理在于，K2FeO4+有毒有机物→Fe3++OH-+无毒小分子物质，高铁酸钾氧化有机物使体系的pH升高，通过pH可监控系统中高铁酸钾的反应进度。The present invention performs automatic control by pH signal. The principle is that K 2 FeO 4 + toxic organic matter → Fe 3+ +OH - + non-toxic small molecular substances, potassium ferrate oxidizes organic matter to increase the pH of the system, and the reaction progress of potassium ferrate in the system can be monitored through pH.
本发明的pH控制过程：pH探头将采集到电信号经pH检测仪、模数转换器传至微处理器，并与设定的pH值进行比较，根据比较结果控制酸液或氧化剂的阀门的流量开关，自动控制加入药剂的种类和加入量。The pH control process of the present invention: the pH probe transmits the collected electrical signal to the microprocessor through the pH detector and the analog-to-digital converter, and compares it with the set pH value, and controls the valve of the acid or oxidant according to the comparison result. The flow switch automatically controls the type and amount of the drug added.
本发明可以将难降解的有毒有机污染物转化为毒性小甚至无毒的有机物，直至完全矿化为二氧化碳和水，处理后的土壤/水毒性大大降低，达到了去除污染的目的。该处理方法反应时间短，处理效率高，操作简单，处理成本低。The invention can convert refractory toxic organic pollutants into less toxic or even non-toxic organic matter until completely mineralized into carbon dioxide and water, and the toxicity of the treated soil/water is greatly reduced, achieving the purpose of removing pollution. The treatment method has short reaction time, high treatment efficiency, simple operation and low treatment cost.
用该方法处理有毒有机物点源污染土壤/水，可以在短时间内达到很高的去除效果，从而及时有效地降解有毒污染物、消除毒性危害，最大程度的减少二次污染。本发明可用于快速处理由于有毒有机化学品泄漏突发性污染事故造成的土壤/水点源污染。Using this method to treat toxic organic point source polluted soil/water can achieve a high removal effect in a short period of time, thereby effectively degrading toxic pollutants in a timely and effective manner, eliminating toxic hazards, and minimizing secondary pollution. The invention can be used for rapid treatment of soil/water point source pollution caused by sudden pollution accidents caused by the leakage of toxic organic chemicals.
附图说明 Description of drawings
图1是本发明的处理方法处理污染土壤的工艺流程图；Fig. 1 is the process flow chart of treatment method of the present invention to process polluted soil;
图2是本发明的自动控制软件框图；Fig. 2 is automatic control software block diagram of the present invention;
图3是本发明的处理效果随时间的变化曲线；Fig. 3 is the variation curve of the treatment effect of the present invention over time;
图4是本发明的处理效果随体系初始pH值的变化曲线；Fig. 4 is the variation curve of the treatment effect of the present invention along with the initial pH value of the system;
图5是本发明的硫酸投加量随高铁酸钾加入量的变化曲线。Fig. 5 is the variation curve of the dosage of sulfuric acid of the present invention with the dosage of potassium ferrate.
具体实施方式 Detailed ways
下面结合附图举例对本发明做更详细的描述：The present invention is described in more detail below in conjunction with accompanying drawing example:
结合图1，实施该处理方法的工艺分污染物处理单元1、加药单元2和自动控制单元3三个单元。Referring to FIG. 1 , the process for implementing the treatment method is divided into three units: a
(一)本发明的污染物处理过程如下：(1) Pollutant treatment process of the present invention is as follows:
1、氧化反应：以苯酚污染土壤为例，通过进料口向反应器中投加1kg污染浓度为10g/kg的模拟苯酚污染土壤，并按照土水比1∶0.5(m∶V)的加入原则加入0.5L水，打开反应器旋转旋钮，调节反应罐的转速至20-60r/min，转动2min。连续向反应器中投加氧化剂高铁酸钾，并用2％的硫酸调节反应体系的pH值在7.0-9.0之间；1. Oxidation reaction: Taking phenol-contaminated soil as an example, add 1 kg of simulated phenol-contaminated soil with a pollution concentration of 10 g/kg into the reactor through the feed port, and add according to the soil-water ratio of 1:0.5 (m:V) In principle, add 0.5L of water, turn on the rotary knob of the reactor, adjust the speed of the reaction tank to 20-60r/min, and rotate for 2min. Continuously add the oxidizing agent potassium ferrate to the reactor, and adjust the pH value of the reaction system between 7.0-9.0 with 2% sulfuric acid;
2、中和处理：氧化反应完成后的泥水混合液中加入2％的硫酸进行中和处理，使处理后的土壤pH值在7.0-9.0之间；2. Neutralization treatment: Add 2% sulfuric acid to the mud-water mixture after the oxidation reaction is completed for neutralization treatment, so that the pH value of the treated soil is between 7.0-9.0;
3、泥水分离：本发明的泥水分离是在离心机中进行的，将处理后的泥水混合物转入至离心机内进行泥水分离，分离得到的分离液进入液体回流装置，经泵泵入反应器中循环使用，分离后的泥外排。3. Mud-water separation: The mud-water separation of the present invention is carried out in a centrifuge, and the treated mud-water mixture is transferred to the centrifuge for mud-water separation, and the separated liquid enters the liquid reflux device and is pumped into the reactor It is recycled in the medium and the separated mud is discharged outside.
(二)结合附图2，本发明基于pH值控制的过程如下：(2) in conjunction with accompanying
1、根据高铁酸钾氧化降有机物的pH值的要求，反应的最佳pH条件为：pH 7.0-pH 9.0；1. According to the requirements of the pH value of organic matter oxidized by potassium ferrate, the optimal pH condition for the reaction is: pH 7.0-pH 9.0;
2、设定氧化反应pH控制的上限值A1＝13.0、中间值A2＝10.0、下限值A3＝7.0；2. Set the upper limit A 1 =13.0, the middle value A 2 =10.0, and the lower limit A 3 =7.0 for the oxidation reaction pH control;
3、向反应器中加入氧化剂高铁酸钾，并检测pH值的变化，当体系的pH值超过设定的上限值A1(pH＝13.0)时，关闭氧化剂阀门；3. Add the oxidant potassium ferrate to the reactor, and detect the change of the pH value. When the pH value of the system exceeds the set upper limit value A 1 (pH=13.0), close the oxidant valve;
4、反应2min后，控酸阀门开启，以30mL/min的速率向反应器加入2％的硫酸，当体系的pH值处于中间值A2(pH＝10.0)时，以2mL/min的速率向反应器中加入2％的硫酸，直至体系的pH值降至预先设定的下限值A3(pH＝7.0)时，关闭酸液阀门；4. After reacting for 2min, the acid control valve was opened, and 2 % sulfuric acid was added to the reactor at a rate of 30mL/min. Add 2% sulfuric acid into the reactor until the pH value of the system drops to the preset lower limit A 3 (pH=7.0), then close the acid liquid valve;
5、高铁酸钾与有机物反应迅速，pH值变化(增加)较快，随着反应的进行，当有机物被完全氧化后，高铁酸钾自身分解的速度减小，pH值增加缓慢，当投加高铁酸钾后，体系pH值的变化量ΔpH≤0.01/min时，表明有机物已经被完全氧化，关闭高铁酸钾阀门，2min后，停止运行氧化反应器；5. Potassium ferrate reacts quickly with organic matter, and the pH value changes (increases) quickly. As the reaction progresses, when the organic matter is completely oxidized, the decomposition speed of potassium ferrate itself decreases, and the pH value increases slowly. After potassium ferrate, when the change in pH value of the system ΔpH≤0.01/min, it indicates that the organic matter has been completely oxidized, close the valve of potassium ferrate, and stop the oxidation reactor after 2 minutes;
6、在加酸液中和的过程中，若测得的pH值大于设定的下限值A3(pH＝7.0)时，开启酸液阀门，加入2％的硫酸(10mL/min)，直至pH降至预先设定的下限值A3(pH＝7.0)时，关闭酸液阀门，中和反应完成。6. In the process of adding acid solution for neutralization, if the measured pH value is greater than the set lower limit A 3 (pH=7.0), open the acid solution valve and add 2% sulfuric acid (10mL/min), When the pH drops to the preset lower limit value A 3 (pH=7.0), the acid liquid valve is closed, and the neutralization reaction is completed.
该方法可以用于快速处理有毒有机化学品泄漏等突发性污染事故造成的土壤/水源污染。This method can be used to quickly deal with soil/water source pollution caused by sudden pollution accidents such as toxic organic chemical spills.
下面以苯酚污染土壤为例，说明本发明的实施过程：Take the phenol-contaminated soil as an example below to illustrate the implementation process of the present invention:
1、实验所用的反应器的有效容积为3L，为自旋转混合搅拌式反应器；模拟苯酚污染土壤浓度为10g/kg，向氧化反应器中投加1kg污染土壤，按土水比1∶0.5(m∶V)加入0.5L水，将反应器转速调节至20-60r/min，2min后，以0.020mol/min的速度加入高铁酸钾，控制反应体系的初始pH值为7.0-9.0，苯酚去除效果如图3所示。5min后苯酚的去除率可达90％，10min后苯酚的去除率达95％以上。1. The effective volume of the reactor used in the experiment is 3L, which is a self-rotating mixing and stirring reactor; the simulated phenol-contaminated soil concentration is 10g/kg, and 1kg of contaminated soil is added to the oxidation reactor, according to the soil-water ratio of 1:0.5 (m:V) Add 0.5L of water, adjust the reactor speed to 20-60r/min, after 2min, add potassium ferrate at a rate of 0.020mol/min, control the initial pH value of the reaction system to 7.0-9.0, phenol The removal effect is shown in Figure 3. After 5 minutes, the removal rate of phenol can reach 90%, and after 10 minutes, the removal rate of phenol can reach more than 95%.
2、进行了不同初始pH值对苯酚去除效果的影响实验，如图4所示。可见，高铁酸钾氧化降解苯酚的最佳pH值范围为：5-9。2. Experiments on the effect of different initial pH values on the removal of phenol were carried out, as shown in Figure 4. It can be seen that the optimum pH range for oxidative degradation of phenol by potassium ferrate is 5-9.
3、高铁酸钾氧化降解苯酚的过程中，体系的pH值迅速升高，用2％的硫酸调节体系的pH值至7.0-8.5，2％的硫酸用量与高铁酸钾使用量的关系如图5所示。两者符合如下关系：y＝2.0711x-0.1526，x为高铁酸钾的投加量(g)，y为2％的硫酸的投加量(mL)，相关系数R2＝0.9981。3. During the oxidative degradation of phenol by potassium ferrate, the pH value of the system rises rapidly. Use 2% sulfuric acid to adjust the pH value of the system to 7.0-8.5. The relationship between the amount of 2% sulfuric acid and the amount of potassium ferrate is shown in the figure 5. The two conform to the following relationship: y=2.0711x-0.1526, x is the dosage (g) of potassium ferrate, y is the dosage (mL) of 2% sulfuric acid, and the correlation coefficient R 2 =0.9981.
该方法的有益效果是：The beneficial effect of this method is:
1、实现了对有毒有机物污染土壤/水的快速处理，防止二次污染事故的发生；1. Realize the rapid treatment of soil/water contaminated by toxic organic substances, and prevent the occurrence of secondary pollution accidents;
2、该方法的反应时间短，处理效率高，20min可以去除97％以上的有毒有机物；2. The reaction time of this method is short, and the treatment efficiency is high, and more than 97% of toxic organic substances can be removed in 20 minutes;
3、通过pH值进行自动控制，自动化程度高，操作简便；3. Automatic control by pH value, high degree of automation and easy operation;
4、节水，处理后的土壤无二次污染；泥液分离后的液体循环使用，很大程度的节约水量；通过加入2％硫酸，既能还原氧化剂，消除了排出的泥中的氧化剂的危害，还可以调节反应后土壤的pH值，使处理土壤中性排放。4. Water saving, the treated soil has no secondary pollution; the liquid after the separation of mud and liquid is recycled, which saves water to a great extent; by adding 2% sulfuric acid, it can reduce the oxidant and eliminate the oxidant in the discharged mud Harm, it can also adjust the pH value of the soil after the reaction, so that the treated soil is neutrally discharged.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105556843A CN102069089B (en) | 2010-11-24 | 2010-11-24 | A method for automatically treating high concentrations of toxic organics in soil or water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105556843A CN102069089B (en) | 2010-11-24 | 2010-11-24 | A method for automatically treating high concentrations of toxic organics in soil or water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102069089A CN102069089A (en) | 2011-05-25 |
| CN102069089B true CN102069089B (en) | 2012-02-01 |
Family
ID=44027966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105556843A Expired - Fee Related CN102069089B (en) | 2010-11-24 | 2010-11-24 | A method for automatically treating high concentrations of toxic organics in soil or water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102069089B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080960B (en) * | 2015-08-06 | 2017-10-13 | 侯力玮 | Particle and restorative procedure are repaired in soil pollution processing |
| CN106623404A (en) * | 2016-12-22 | 2017-05-10 | 常州大学 | Method for degrading HCH (Hexachloro-Cyclohexane) in soil by potassium ferrate through assistance of surfactant |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598729A (en) * | 2004-08-18 | 2005-03-23 | 哈尔滨工业大学 | Automatic regulation control system for PH value of solution and its automatic control method |
| CN101502842A (en) * | 2009-03-10 | 2009-08-12 | 哈尔滨工程大学 | Emergency quick processing device and processing method for toxic organic chemical polluted soil |
-
2010
- 2010-11-24 CN CN2010105556843A patent/CN102069089B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598729A (en) * | 2004-08-18 | 2005-03-23 | 哈尔滨工业大学 | Automatic regulation control system for PH value of solution and its automatic control method |
| CN101502842A (en) * | 2009-03-10 | 2009-08-12 | 哈尔滨工程大学 | Emergency quick processing device and processing method for toxic organic chemical polluted soil |
Non-Patent Citations (3)
| Title |
|---|
| 何小其等.废水中和处理pH值自动控制系统.《轻工机械》.2000,(第3期),第4-7页. * |
| 袁洪良.基于PLC的PH值自动控制系统.《电气时代》.2010,(第4期),第100-102页. * |
| 邓子峰等.高铁酸钾降解苯酚的机制研究.《环境污染与防治》.2007,第29卷(第12期),第905-911页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102069089A (en) | 2011-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Valderrama et al. | Oxidation by Fenton's reagent combined with biological treatment applied to a creosote-comtaminated soil | |
| Wang et al. | Removal of organic matter and ammonia nitrogen from landfill leachate by ultrasound | |
| Lin et al. | Degradation of polycyclic aromatic hydrocarbons (PAHs) in textile dyeing sludge with ultrasound and Fenton processes: Effect of system parameters and synergistic effect study | |
| Qu et al. | Ozonation of alachlor catalyzed by Cu/Al2O3 in water | |
| CN107055877B (en) | Mobile emergency treatment organic pollution underground water modularization device | |
| Gu et al. | Treatment of semi-aerobic aged-refuse biofilter effluent from treating landfill leachate with the Fenton method | |
| Soubh et al. | The post treatment of composting leachate with a combination of ozone and persulfate oxidation processes | |
| US10435317B2 (en) | Composite material for catalytic treatment of contaminated soil and water and catalytic treatment method thereof | |
| Fan et al. | Using FeGAC/H2O2 process for landfill leachate treatment | |
| CN207002538U (en) | A kind of dielectric barrier discharge plasma sludge treatment equipment | |
| CN102794183A (en) | Preparation method and use of loading activated carbon | |
| WO2018027273A1 (en) | System and method for removing contaminants from water | |
| CN110316881A (en) | A kind of sewage air lift combined treatment process | |
| CN103350103B (en) | Method for treating organic matter-contaminated soil by using supercritical water oxidation technology | |
| CN103787536A (en) | Microwave-assisted Fenton catalytic degradation method for organic dye wastewater using iron ore tailings | |
| CN107265606A (en) | A kind of method that removal organic polluter is removed based on periodate oxidation | |
| CN107399871A (en) | A kind of Waste Water Treatment of co-oxidation | |
| CN102069089B (en) | A method for automatically treating high concentrations of toxic organics in soil or water | |
| CN102140000A (en) | Process for realizing decrement of active sludge and removal of endocrine disrupting chemicals from sludge synergistically | |
| Hilles et al. | The effect of persulfate oxidation on the biodegradability of concentrated anaerobic stabilized leachate | |
| CN101502842B (en) | Emergency quick processing device and processing method for toxic organic chemical polluted soil | |
| CN203513323U (en) | Photocatalytic intelligent device capable of circularly degrading high-concentration organic matters in industrial wastewater | |
| CN206751493U (en) | Fenton iron mud regeneration device and Fenton method sewage disposal systems | |
| CN205442858U (en) | Ozone air floating recycling treatment device | |
| CN215250018U (en) | A device for ex situ restoration of polluted groundwater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20171124 |