Ozone disintegration of excess biomass and application to nitrogen removal.

A pilot-scale facility integrated with an ozonation unit was built to investigate the feasibility of using ozone-disintegration byproducts of wasted biomass as a carbon source for denitrification. Ozonation of biomass resulted in mass reduction by mineralization as well as by ozone-disintegrated biosolids recycling. Approximately 50% of wasted solids were recovered as available organic matter (ozonolysate), which included nonsettleable microparticles and soluble fractions. Microparticles were observed in abundance at relatively low levels of ozone doses, while soluble fractions became dominant at higher levels of ozone doses in ozone-disintegrated organics. Batch denitrification experiments showed that the ozonolysate could be used as a carbon source with a maximum denitrification rate of 3.66 mg nitrogen (N)/g volatile suspended solids (VSS) x h. Ozonolysate was also proven to enhance total nitrogen removal efficiency in the pilot-scale treatment facility. An optimal chemical oxygen demand (COD)-to-nitrogen ratio for complete denitrification was estimated as 5.13 g COD/g N. The nitrogen-removal performance of the modified intermittently decanted extended aeration process dependent on an external carbon supply could be described as a function of solids retention time.     

微气泡催化臭氧化深度处理制药废水的效果及DOM组分特性的变化

采用镁铝层状双氢氧化物(MAL)微气泡催化臭氧化(MAL/MB/O₃)体系深度处理实际制药废水,考察了该体系对溶解性有机物(DOM)的深度去除性能及DOM组分的变化特性,并与普通气泡臭氧化(CB/O₃)、普通气泡催化臭氧化(MAL/CB/O₃)、微气泡臭氧化(MB/O₃)工艺进行了比较。结果表明,MAL/MB/O₃处理性能优于CB/O₃、MAL/CB/O₃和MB/O₃,在臭氧投加总量与处理废水初始COD值之比为0.6、气流量0.5 L·min⁻¹、催化剂投加量0.5 mg·L⁻¹的条件下,整体COD去除率可达49.79%,COD去除量与臭氧消耗量的比值为0.83,废水的可生化性得到了一定改善,生物毒性显著下降。废水DOM中疏水性组分氧化去除率高于亲水性组分。臭氧直接氧化可去除疏水性组分,而亲水性组分去除主要依赖HO·氧化。MAL/MB/O₃对DOM的去除效率最高,可达到52.51%,其中疏水性组分整体去除率56.67%,亲水性组分整体去除率46.93%。废水DOM在氧化处理中存在官能团向酸性基团转化、类腐殖质向类富里酸和类胡敏酸转化、其他组分向亲水性酸(HIA)组分转化的趋势。MAL/MB/O₃强氧化能力对于DOM组分不饱和结构和荧光结构的破坏作用最为显著。以上研究结果可为制药废水深度处理提供参考。     

UV-Fenton、Fenton和O3氧化法处理垃圾渗滤液反渗透膜浓缩液的对比研究

对比分析了UV-Fenton法、Fenton法和O3氧化法对垃圾渗滤液反渗透膜浓缩液的处理特性。结果表明:UV-Fenton法最佳反应条件为反应时间120 min,pH为4.0,H2O2和Fe(II)的投加量分别为6 000 mg·L-1和3 000 mg·L-1;Fenton法最佳反应条件为反应时间90 min,pH为4.0,H2O2和Fe(II)的投加量分别为10 000 mg·L-1和4 000 mg·L-1;O3氧化法最佳反应条件为反应时间90 min,pH为8.0,O3投加量为5 g·L-1。在上述反应条件下,UV-Fenton法、Fenton法和O3氧化法对垃圾渗滤液反渗透膜浓缩液的COD去除率分别为72%、60%和68%,对TOC和总氮(TN)均有较好的去除效果,但是对NH4+-N去除不佳。UV-Fenton法和Fenton法对于总磷(TP)的去除优于O3氧化法。     

基于电催化疏水膜的新型膜接触臭氧氧化工艺

膜接触臭氧氧化(MCO)工艺以疏水膜为臭氧提供丰富的气液接触界面,具有较高臭氧传质效率。然而,MCO工艺以臭氧直接氧化为主,对废水中有机污染物的去除有较强的选择性,氧化能力有待提高。通过电催化疏水膜将MCO工艺与电化学技术相结合,构建了新型的膜接触电催化臭氧氧化(ECMCO)工艺。ECMCO工艺以高级氧化过程为主,对水中硝基苯的去除效率明显增强,同步提高了臭氧传质效率和体系的氧化能力。ECMCO工艺对酒厂废水的生化出水进行深度处理后,水中COD降至50 mg·L⁻¹以下,色度完全脱除,总运行能耗明显低于MCO和MCO+H₂O₂工艺。针对臭氧工艺在水处理应用中传质效率低、矿化能力差、运行能耗高的问题,ECMCO技术提供了可行的解决方案,有较好的研究价值和应用前景。     

Combination of ozonation with conventional aerobic oxidation for distillery wastewater treatment

Laboratory-scale experiments were conducted in order to investigate the effect of ozone as pre-aerobic treatment and post-aerobic treatment for the treatment of the distillery wastewater. The degradation of the pollutants present in distillery spent wash was carried out by ozonation, aerobic biological degradation processes alone and by using the combinations of these two processes to investigate the synergism between the two modes of wastewater treatment and with the aim of reducing the overall treatment costs. Pollutant removal efficiency was followed by means of global parameters directly related to the concentration of organic compounds in those effluents: chemical oxygen demand (COD) and the color removal efficiency in terms of absorbance of the sample at 254 nm. Ozone was found to be effective in bringing down the COD (up to 27%) during the pretreatment step itself. In the combined process, pretreatment of the effluent led to enhanced rates of subsequent biological oxidation step, almost 2.5 times increase in the initial oxidation rate has been observed. Post-aerobic treatment with ozone led to further removal of COD along with the complete discoloration of the effluent. The integrated process (ozone-aerobic oxidation-ozone) achieved approximately 79% COD reduction along with discoloration of the effluent sample as compared to 34.9% COD reduction for non-ozonated sample, over a similar treatment period.     

原位臭氧氧化对活性污泥系统硝化和反硝化作用的影响研究

将厌氧序批式间歇反应器(ASBR)和序批式间歇反应器(SBR)串联组成污泥减量新工艺,着重探讨了对SBR段进行原位臭氧投加时,臭氧氧化作用对系统硝化和反硝化能力的影响,并以不投加作为对照。结果表明,将臭氧原位投加到ASBR—SBR组合工艺的SBR段,臭氧投加量为0.027g(以每克MLSS计),每隔3个周期再次投加、连续运行40d,试验组SBR段臭氧投加当期出水COD去除率为86%,比对照组下降了9百分点,但臭氧氧化细胞内大量有机物进入混合液中,为反硝化作用提供了外加碳源,对污泥反硝化能力的提高起到了一定的促进作用;试验组部分硝化细菌由于臭氧的强氧化作用而失去活性,但是随着剩余污泥量的减少,系统的污泥龄延长,有利于硝化细菌的生长,使得系统的硝化能力基本未受影响;试验组臭氧投加当期SBR段出水NO2--N平均浓度比对照组的高18.9%,但经过3个周期的运行后,其SBR段出水NO2--N平均质量浓度降低至7.57mg/L,基本与对照组持平;试验组臭氧投加当期SBR段出水NO3--N的平均浓度高于对照组,但经过3个周期的运行后,试验组出水NO3--N平均浓度低于对照组;试验组臭氧投加当期SBR段出水TN和对照组的出水TN平均去除率分别为65%和75%,但试验组再经过3个周期的运行后,出水TN平均去除率可以达到72%。可见,原位投加臭氧并未对SBR段的硝化和反硝化能力产生明显的影响。     

高级氧化工艺处理煤化工浓盐水

浓盐水处理是一项世界性难题,采用高级氧化工艺能有效去除废水中难降解有机物,从而提高其可处理性。分别采用臭氧氧化、O3/H2O2、GAC/O3和GAC/O3/H2O2等工艺处理煤化工浓盐水,研究了工艺参数对COD去除的影响,探索了有机物去除机理。研究表明,煤化工浓盐水中易被臭氧氧化的有机物大约占55%。增加臭氧投加量和气体流速能提高有机物去除效率。酸性条件下的COD去除率要高于碱性条件下。臭氧氧化、O3/H2O2、GAC/O3和GAC/O3/H2O2工艺中·OH稳定浓度分为4.1、37.7、5.9和41.3×10-14 mol/L。O3与H2O2之间存在明显协同作用,GAC与O3协同产生·OH的作用不明显,但GAC对氧化过程中生成的生物抑制物具有较好的吸附去除作用。GAC、O3和H2O2三者之间的协同作用有助于去除煤化工浓盐水中难降解有机物、提高出水可生化性和降低出水水质毒性。     

Treatment of distillery spent-wash by ozonation and biodegradation: significance of pH reduction and inorganic carbon removal before ozonation.

This study is aimed at exploring strategies for mineralization of refractory compounds in distillery effluent by anaerobic biodegradation/ozonation/aerobic biodegradation. Treatment of distillery spent-wash used in this research by anaerobic-aerobic biodegradation resulted in overall COD removal of 70.8%. Ozonation of the anaerobically treated distillery spent-wash was carried out as-is (phase I experiments) and after pH reduction and removal of inorganic carbon (phase II experiments). Introduction of the ozonation step resulted in an increase in overall chemical oxygen demand (COD) removal, with the highest COD removals of greater than 95% obtained when an ozone dose of approximately 5.3 mg ozone absorbed/mg initial total organic carbon was used. The COD removal during phase II experiments was slightly superior compared with phase I experiments at similar ozone doses. Moreover, efficiency of ozone absorption from the gas phase into distillery spent-wash aliquots was considerably enhanced during phase II experiments.     

A comparative study of the removal of 3-indolebutyric acid using advanced oxidation processes

In this study, advanced oxidation technologies, namely Fenton Process (FP), Fenton-Like Process (FLP), ozonation (O3) and O3/H2O2 processes, were applied to synthetic wastewater containing 3-indolebutyric acid (IBA). The effectiveness of each process was investigated at different pH values, Fe(+2), Fe(+3), O3 and H2O2 concentrations with respect to the removal efficiencies for chemical oxygen demand (COD) and total organic carbon (TOC). The best removal efficiencies were seen at pH 3 and 2 mM Fe concentration in both FP and FLP, in which the optimum H2O2 concentrations were 6 mM for FP and 10 mM for FLP. Optimum process conditions were pH 12 for the O3 process, pH 9 for the O3/H2O2 process and 1:1 O3/H2O2 molar ratio. The highest COD removal efficiency was 86 percent, obtained in the O3/H2O2 process and the highest TOC removal efficiency was obtained at 77 percent in the FP.     

Influence of ozone pre-treatment on sludge anaerobic digestion: removal of pharmaceutical and personal care products

The effect of an oxidative pre-treatment with ozone on the removal of Pharmaceutical and Personal Care Products (PPCPs) during the anaerobic digestion of sewage sludge has been investigated. Besides, the digested sludge characteristics in terms of pathogens content, dewatering properties, heavy metals content and linear alkylbenzene sulfonates (LAS) were determined. During ozonation (20mg O(3)/g TSS), about 8% of volatile solids (VS) and 60% of the chemical oxygen demand (COD) were solubilized. However, no mineralization was observed. The elimination of VS and total COD during anaerobic digestion were not affected by ozone treatment with efficiencies ranging from 60% to 65%. All PPCPs considered were removed during anaerobic treatment of sludge, with efficiencies ranging from 20% to 99%. No significant influence of ozone pre-treatment was observed on PPCPs elimination except for carbamazepine. Pathogens, heavy metals and LAS contents after conventional and pre-ozonation treatment of sewage sludge were below the legal requirements. However, the dewatering properties of sludge were deteriorated when the ozone pre-treatment was applied.     

Ozonation of oxytetracycline and toxicological assessment of its oxidation by-products

Antibiotic formulation effluents are well known for their difficult elimination by traditional bio-treatment methods and their important contribution to environmental pollution due to its fluctuating and recalcitrant nature. In the present study the effect of ozonation on the degradation of oxytetracycline (OTC) aqueous solution (100mgl(-1)) at different pH values (3, 7 and 11) was investigated. Ozone (11mgl(-1) corresponds the concentration of ozone in gas phase) was chosen considering its rapid reaction and decomposition rate. The concentration of oxytetracycline, chemical oxygen demand (COD), biochemical oxygen demand (BOD) and BOD5/COD ratio were the parameters to evaluate the efficiency of the ozonation process. In addition, the toxic potential of the OTC degradation was investigated by the bioluminescence test using the LUMIStox 300 instrument and results were expressed as the percentage inhibition of the luminescence of the marine bacteria Vibrio fischeri. The results demonstrate that ozonation as a partial step of a combined treatment concept is a potential technique for biodegradability enhancement of effluents from pharmaceutical industries containing high concentration of oxytetracycline provided that the appropriate ozonation period is selected. At pH 11 and after 60min of ozonation of oxytetracycline aqueous solutions (100 and 200mgl(-1)) the BOD5/COD ratios were 0.69 and 0.52, respectively. It was also shown that COD removal rates increase with increasing pH as a consequence of enhanced ozone decomposition rates at elevated pH values. The results of bioluminescence data indicate that first by-products after partial ozonation (5-30min) of OTC were more toxic than the parent compound.     

微氧曝气-一段式厌氧氨氧化-反硝化组合工艺处理餐厨沼液

针对餐厨沼液高氨氮、低C/N的特点,采用“微氧曝气-一段式厌氧氨氧化-BioClens反硝化”工艺,进行了餐厨沼液脱氮除碳的小试研究。经150 d的运行优化,系统稳定后该工艺的耗氧有机物 (以COD计) 、TN平均去除率分别达到81.3%和81.8%。微氧曝气单元为厌氧氨氧化单元消除餐厨沼液中有机物的影响并保留NH₄⁺-N,其耗氧有机物 (以COD计) 及NH₄⁺-N去除率分别为81.6%和13.7%,为厌氧氨氧化稳定运行提供保障。厌氧氨氧化单元是NH₄⁺-N的主要去除单元,稳定后运行后总氮去除负荷为0.480 kg·(m³·d)⁻¹;BioClens反硝化单元对前两段工艺中产生的NO₃⁻-N进行反硝化深度去除,在以乙酸钠为碳源,包埋固定化填料填充比为5%、C/N=3的情况下,其平均NO₃⁻-N去除率达90%。该工艺实现了对餐厨沼液经济高效处理,具有应用潜力。

     

工艺组合对焦化废水中核心污染物的去除及其能耗分配

以焦化废水为研究对象,结合文献统计与水质特征的分析,研究了厌氧置前与好氧置前2种不同组合工艺对核心污染物的去除与能耗分配的差异性,讨论了焦化废水生物处理工艺的开发可行性。结果表明,前置厌氧与好氧单元对污染物不同的去除机理是构成曝气能耗与碳源需求差别的主要原因。为满足60 m³·h⁻¹设定水质的脱氮目标(TN<40 mg·L⁻¹),O/A/O工艺耗氧量为83.9 kg·h⁻¹,A/A/O工艺耗氧量为100.4 kg·h⁻¹。当对废水中的耗氧有机物以及共价结合含氮有机物的预处理较为彻底时,前置好氧工艺在更低能耗下可以实现总氮脱除：A/A/O和O/A/O工艺分别需要122.1 g·m⁻³和486.9 g·m⁻³的外部碳源(以甲醇计)来实现总氮的等量去除。A/A/O、O/A/O与O/H/O工艺(H为水解脱氮单元)分别为单污泥、双污泥和三污泥系统运行,在污泥回流和硝化液回流方面的耗能具有显著差异。由于O/H/O工艺不需要污泥回流并且颗粒污泥传氧效率高,故实现脱氮目标的耗氧量仅为53.26 kg·h⁻¹,需要的外加碳源可降低至0~220 g·m⁻³,表现出节能与降耗的优势。复杂废水生物处理工艺中存在着反应器结构与单元组合的优化空间,在去除核心污染物以及追求总氮浓度趋零的过程中,需要保证废水中的电子供受体、微生物功能与工艺运行参数在合理区间内。     

Ozonation of hydrolyzed azo dye reactive yellow 84 (CI).

The combination of chemical and biological water treatment processes is a promising technique to reduce recalcitrant wastewater loads. The key to the efficiency of such a system is a better understanding of the mechanisms involved during the degradation processes. Ozonation has been applied to many fields in water and wastewater treatment. Especially for textile mill effluents ozonation can achieve high color removal, enhance biodegradability, destroy phenols and reduce the chemical oxygen demand (COD). However, little is known about the reaction intermediates and products formed during ozonation. This work deals with the degradation of hydrolyzed Reactive Yellow 84 (Color Index), a widely used azo dye in textile finishing processes with two monochlorotriazine anchor groups. Ozonation of the hydrolyzed dye in ultra pure water was performed in a laboratory scale cylindric batch reactor. Decolorization, determined by measuring the light absorbance at the maximum wavelength in the visible range (400 nm), was almost complete after 60 and 90 min with an ozone concentration of 18.5 and 9.1 mg/l, respectively. The TOC/TOC0 ratio after ozonation was about 30%, the COD was diminished to 50% of the initial value. The BOD5/COD ratio increased from 0.01 to about 0.8. Oxidation and cleavage of the azo group yield nitrate. Cleavage of the sulfonic acid groups of aromatic rings caused increases in the amount of sulfate. Formic acid and oxalic acid were identified as main oxidation products by high performance ion chromatography (HPIC). The concentrations of these major products were monitored at defined time intervals during ozonation.     

Oxidation-reduction potential changes in aeration tanks and microprofiles of activated sludge floc in medium- and low-strength wastewaters.

Real-time control of aeration tank operation is key to high-efficiency pollutant removal and energy savings. One of the aims of this study was to examine the potential for using redox potential (oxidation-reduction potential [ORP]) to indicate wastewater quality online in aeration tanks treating medium (chemical oxygen demand [COD] of 70 to 150 mg/L) and low (COD of 15 to 30 mg/L) pollutant-concentration wastewaters. The field-scale data provide a good relationship between ORP values and nutrient removal along the length of the aeration tanks. The ORP values increased dramatically as organic matter was removed along the aeration tanks, indicating the improvement of the bulk liquor redox status. Dissolved oxygen higher than 1.0 mg/L was necessary for good biodegradation and improvement of the liquid redox status. Nitrification occurred at higher ORP values (380 to 420 mV) than was the case for organic substrate oxidation (250 to 300 mV). The microprofiles obtained from microelectrode measurements substantiate the heterogeneity of the microbial processes inside activated sludge flocs. Because of microbial oxygen utilization, the aerobic region in the activated sludge floc was limited to the top layer (0.1 to 0.2 mm) of the activated sludge aggregate present in medium-strength wastewater, with an anoxic zone dominating inside the flocs. When dissolved oxygen in the bulk water was higher than 4.0 mg/L, the anoxic zone inside the floc disappeared. At low wastewater pollutant concentrations, the ORP and dissolved oxygen inside the activated sludge aggregates were higher than those from medium-strength wastewater. The prospect of using ORP as an online control approach for aeration tank operation and the potential reasons for activated sludge floc size varying with pollutant strengths are also discussed.     

Mn3O4催化臭氧化钻井废水的作用机理

通过静态实验,探讨了Mn3O4对钻井废水臭氧化过程的催化作用机理,考察了Mn3O4及Cl-对臭氧分解、水体湍动程度、羟基自由基抑制剂碳酸氢根和叔丁醇的加入对COD去除率的影响,分析了反应过程中TOC和pH的变化。结果表明,催化剂加量为100 mg/L时,臭氧分解率由单独臭氧时的38.2%增加到81.4%,Mn3O4对钻井废水中有机物的吸附去除率仅为2%,O3/活性炭体系对COD去除率与单独臭氧效果接近,说明臭氧在催化剂表面存在吸附作用,促进臭氧分解;水体不搅拌与搅拌速度增加为900 r/min时,COD去除率由52%增加到58%,搅拌程度对钻井废水COD去除效果影响不大;HCO3-浓度为100 mg/L时,COD去除率降低到41.2%,说明了体系中有羟基自由基产生;氯离子浓度为1 000 mg/L,臭氧的分解率降低了9.2%,证明了臭氧在催化剂表面的吸附作用;羟基自由基抑制剂叔丁醇的加入,使得COD去除率由54.3%降低为40.8%,证实了反应体系中存在羟基自由基。同时在反应过程中,体系的TOC 由191.9 mg/L降低至37.6 mg/L;pH由原来的11.2降低到6.3。实验现象说明,臭氧吸附在Mn3O4催化剂表面,分解产生羟基自由基,进而氧化去除钻井废水中有机物,这在某种程度上证明了Mn3O4催化臭氧化对有机物的降解遵循羟基自由基机理。     

Treatment of pharmaceutical wastewater containing antibiotics by O3 and O3/H2O2 processes

Ozonation of three different synthetic pharmaceutical formulation wastewater containing two human antibiotics and a veterinary antibiotic has been studied to enhance the their biodegradability. The effects of pH and initial chemical oxygen demand (COD) value as well as addition of hydrogen peroxide on ozonation process were investigated. Total organic carbon (TOC), COD, biochemical oxygen demand (BOD), and aromatic content (UV254) were the parameters followed to evaluate the performance of ozonation process. Comparison of the biodegradability of selected wastewaters containing different antibiotics confirmed that the variation of biodegradability was associated with the target compound. While BOD5/COD ratio of veterinary antibiotic formulation wastewater was increased from 0.077 to 0.38 with an applied ozone dosage of 2.96 g/l, this ratio for human antibiotic I and human antibiotic II was increased from 0 to 0.1 and 0.27 respectively. Moreover the results of this investigation showed that the ozonation process is capable of achieving high levels of COD and aromaticity removals at about their natural pH values.     

Enhancement of chemical-oxygen demand and color removal of distillery spent-wash by ozonation.

Distillery spent-wash has very high organic content (75,000 to 125,000 mg/L chemical-oxygen demand [COD]), color, and contains difficult-to-biodegrade organic compounds. For example, anaerobic treatment of the distillery spent-wash used in this study resulted in 60% COD reduction and low color removal. Subsequent aerobic treatment of the anaerobic effluent resulted in enhancement of COD removal to 66%. In this paper, the effect of ozonation on various properties of the anaerobically treated distillery effluent, including the effect on its subsequent aerobic biodegradation, was investigated. Ozonation of the anaerobically treated distillery effluent at various ozone doses resulted in the reduction of total-organic carbon (TOC), COD, COD/TOC ratio, absorbance, color, and increase in the biochemical-oxygen demand (BOD)/COD ratio of the effluent. Further, ozonation of the anaerobically treated distillery effluent at an ozone dose of 2.08 mg/mg initial TOC and subsequent aerobic biodegradation resulted in 87.4% COD removal, as compared to 66% removal when ozonation was not used.     

Ozonation of an azo dye C.I. Remazol Black 5 and toxicological assessment of its oxidation products

The effect of ozonation (20.5 mgl(-1)) on the degradation processes of an azo dye, Remazol Black 5 (RB5; CI) was studied. Conventional parameters such as chemical oxygen demand (COD), total organic carbon (TOC), pH, conductivity, colour removal, biodegradability (BOD(5/28)), and toxic potential of the dye and its degradation products were monitored during the process. The results obtained indicated that ozonation is a highly effective way to remove the colour of a corresponding dye solution. However, a considerable organic load still remained as indicated by high COD and TOC residues. The COD, TOC reductions were about 40% and 25% for 6 h ozonation of 2 gl(-1) RB5 aqueous solution. During the ozonation process the rapid decrease of pH and the sharp increase of conductivity indicated the formation of acidic by-products and small fragments and ions which were identified by high performance ion chromatography. The BOD28 data revealed that first by-products after partial ozonation (10-150 min) of RB5 were more biodegradable than the parent compound and ozonation can enhance the biodegradability of azo dyes. During the first 150 min of total 360 min of oxidation, the formation of first by-products with high toxic potential took place as it could be confirmed by two acute toxicity-screening tests, the bioluminescence test (Vibrio fischerii) and the neutral red cytotoxicity assay (rat hepatoma cells). The significant enhancement of microbial biodegradability after long-term ozonation could also be seen as a decrease of toxic intermediates in correlation with the ozonation time as indicated in BOD28 biological degradation test results.     

臭氧气浮工艺处理城市合流制溢流污染

合流制溢流(CSO)污水具有水质水量波动大、非连续产生的特点,采用臭氧气浮技术对CSO污水进行处理,研究该技术对化学需氧量(COD)、总磷(TP)、悬浮固体(SS)等污染指标的控制效果。实验室小试结果表明,在最适工艺条件下,混凝-臭氧同步处理对CSO实际污水SS、TP、COD去除率分别为77.8%、73.6%和57.9%,显著削弱了腐殖质类有机物荧光强度,混凝与臭氧氧化之间表现出良好的协同作用,能够实现CSO污染的有效控制。进一步设计了臭氧气浮撬装式设备,并在武汉市开展了CSO处理现场实验研究,运行结果表明,臭氧气浮工艺系统对SS、TP、COD的平均去除率分别为81.8%、75.4%和61.7%,净化效果良好,实现了对CSO典型污染物的协同治理。通过实验室研究和工程实验结果,证实了臭氧气浮工艺用于CSO污水治理的工程可行性,上述研究结果可为CSO污水的多水质目标协同控制提供理论指导和技术参考。