共查询到14条相似文献,搜索用时 359 毫秒
1.
采取试验手段,研究在微波条件下用Fenton试剂处理含酚废水的效果,探讨H2O2质量浓度、FeSO4质量浓度、pH值、反应时间和微波功率等因素对稻壳热解发电废水中COD、挥发酚及色度去除率的影响,并进行不同条件下Fenton反应的对比试验。结果表明,在微波条件下,Fenton试剂能快速降解含酚废水,处理后水样的COD去除率超过73%,挥发酚去除率超过99%,色度去除率接近50%。该含酚废水的最佳处理条件是:H2O2质量浓度为1500 mg/L,FeSO4质量浓度为100 mg/L,pH值为3,反应时间为10 min,微波功率为400 W。 相似文献
2.
高浓度焦化废水的预氧化-混凝处理研究 总被引:3,自引:0,他引:3
焦化废水成分十分复杂,污染物浓度高,性质非常稳定且水量大,是典型的难降解有机废水。使用H2O2为氧化剂,FeSO4.7H2O为催化剂的Fenton氧化法对钢铁焦化厂废水的终冷水进行了试验研究,氧化处理后用FeCl3为混凝剂对COD,NH3-N,色度及浊度的去除率进行了系统的考查。确定了氧化反应的影响因素和最佳的混凝实验条件。结果表明:当pH值控制在3左右,反应时间为30 min,反应温度为80℃,焦化废水的COD,NH3-N,浊度和色度去除率分别达到了93.1%,96.2%,90.8%和90.2%。 相似文献
3.
为研究Fenton试剂对马铃薯淀粉废水的处理效果,为实际生产提供依据,实验采用静态烧杯实验,通过单因素实验方法考察了Fenton试剂反应的主要影响因素及最佳反应条件。实验表明:在FeSO4投加量为0.3 g/L,H2O2为1.2 g/L,反应时间为30 min,pH值为2的最佳反应条件下,马铃薯淀粉废水的COD去除率最高达68.43%,浊度去除率达98.53%。该方法的处理效果较为明显,可作为马铃薯淀粉废水有效的预处理方法。 相似文献
4.
5.
标准Fenton试剂处理压裂余液的实验研究 总被引:2,自引:0,他引:2
油田开采过程中剩余压裂液COD值严重超标,给环境带来极大危害,而目前对此类压裂液处理的研究报道甚少.采用标准Fenton试剂处理压裂余液,通过正交实验,确定了Fenton氧化中主要影响因素(H_2O_2投加量、Fe~(2+)投加量、pH值和反应时间)的实验条件,并考察了各因素对COD去除率的影响,确定出最佳反应条件.压裂余液的COD值由2 075.84 mg/L降至500.49 mg/L,去除率达到75.9%.实验结果表明:标准Fenton试剂对压裂余液具有良好的处理效果. 相似文献
6.
7.
以配制的酸性嫩黄G染料废水为研究对象,考察O3、O3/H2O2体系对去除染料废水中的COD.和色度,提高可生化性的效果,分析pH值、初始污染物浓度、H2O2投加量等各种因素对O3氧化染料废水的影响.试验结果表明:臭氧氧化对COD.去除率达55.1%,对色度的去除率接近100%,B/C由原水的0.08上升到03;臭氧化酸... 相似文献
8.
9.
通过实验以及动力学分析表明用配体的引入对体系进行改进,提高了基于粉煤灰的多相类Fenton体系对模拟制革废水的去除效果,同时得到EDTA-粉煤灰/H2O2体系降解模拟制革废水的最佳反应条件:在室温下,反应pH值为10,初始COD值为110.8 mg/L,过氧化氢浓度为200.4 mg/L,EDTA的浓度为250 mmol/L,粉煤灰投加量为10 g/L的情况下,COD和色度的去除率都在95%以上,粉煤灰在多次使用后,COD去除率均达到97%以上。 相似文献
10.
11.
Fenton试剂处理港口化学品洗舱废水 总被引:1,自引:0,他引:1
根据珠海某港口化学品洗舱废水的组成,配置甲醛、甲苯、苯酚的单独污染物模拟废水,采用Fenton试剂对港口废水和模拟废水进行氧化处理。通过实验探讨了不同的H2O2和Fe2+浓度、pH值、反应时间下各种废水COD的去除情况,确定了各种废水最佳的操作条件。港口废水在最佳的操作条件下COD去除率约为88%,废水的COD质量浓度从2 000~2 200 mg/L降到低于280 mg/L,废水由原来的无法生化变为易生物降解。苯酚、甲醛、甲苯模拟废水在各自最佳的操作条件下,COD去除率也都达到85%以上。 相似文献
12.
13.
For the treatment of paracetamol in water, the UV-C Fenton oxidation process and classic Fenton oxidation have been found to be the most effective. Paracetamol reduction and chemical oxygen demand (COD) removal are measured as the objective functions to be maximized. The experimental conditions of the degradation of paracetamol are optimized by the Fenton process. Influent pH 3, initial H(2)O(2) dosage 60 mg/L, [H(2)O(2)]/[Fe(2+)] ratio 60 : 1 are the optimum conditions observed for 20 mg/L initial paracetamol concentration. At the optimum conditions, for 20 mg/L of initial paracetamol concentration, 82% paracetamol reduction and 68% COD removal by Fenton oxidation, and 91% paracetamol reduction and 82% COD removal by UV-C Fenton process are observed in a 120 min reaction time. By HPLC analysis, 100% removal of paracetamol is observed at the above optimum conditions for the Fenton process in 240 min and for the UV-C photo-Fenton process in 120 min. The methods are effective and they may be used in the paracetamol industry. 相似文献
14.
Optimization of Fenton process for decoloration and COD removal in tobacco wastewater and toxicological evaluation of the effluent 总被引:1,自引:0,他引:1
Decoloration and chemical oxygen demand (COD) removal in tobacco wastewater by Fenton process has been optimized under 25 +/- 2 degrees C. The results showed that the optimal range of conditions were pH 4.13-4.66, Fe(2+) 0.29-0.34 g/L and H2O2 > or = 2.73 g/L. Within this range, up to 95% of colour and 90% of COD was removed. In an enlarged system, setting the optimal conditions as pH 4.50, Fe(2+) 0.34 g/L and H2O2 4.00 g/L, the colour removal rate was 96.03 +/- 2.57%, with COD removal rate of 93.30 +/- 2.92%. The residual COD of 73.67 +/- 19.70 mg/L in effluent had hit the State's first-class standard for the industrial discharge in China (< 100 mg/L COD, GB8978-1996). The ecological safety of Fenton process has also been evaluated. When reaction completed, the content of hydroxyl free radical (OH) was 3.26 +/- 0.44 mg/L. There was no inhibition of Fenton effluent in growth of Escherichia coli, Pseudomonas putida, Pseudomonas sp. HF-1, Acinetobacter sp. TW and Sphingomonas sp. TY. No oxidative stress was induced on strain HF-1 by Fenton effluent. Thus, Fenton process was one of high-efficiency and ecologically safe strategy for tobacco wastewater advanced treatment. 相似文献