印染廢水處理論文外文翻譯1-其他專(zhuān)業(yè)-資料下載頁(yè)
2025-01-19 08:07本頁(yè)面
【導(dǎo)讀】方法的研究進(jìn)展與動(dòng)向。并指出不同印染廢水處理方法的組合是印染廢水處。得迅猛發(fā)展，其用水量和排水量也大幅度增長(zhǎng)。據(jù)不完全統(tǒng)計(jì)，我國(guó)日排放印。染廢水量為3000-4000kt，是各行業(yè)中的排污大戶之一。加強(qiáng)印染廢水的處理可。苯胺類(lèi)、二氧化氯等指標(biāo)的排放限定。因此印染廢水的達(dá)標(biāo)排放是印染行業(yè)急需要解決的問(wèn)題。印染廢水是指印染加工過(guò)程中各工序所排放的廢水混合而成的混合廢水。洗廢水；整理階段排放的整理廢水。印染廢水水質(zhì)隨原材料、生產(chǎn)品種、生產(chǎn)工藝、管理水平的不同而有所差異，導(dǎo)致各個(gè)印染工序排放后匯總的廢水組分非常復(fù)雜。80年代以前，我國(guó)印染廢水的可生化性較高，CODcr濃度常在800mg/L以下，采用傳統(tǒng)的生物與物化聯(lián)合處理系統(tǒng)，出水即可達(dá)到排放標(biāo)準(zhǔn)。印染廢水水質(zhì)發(fā)生了很大的變化。單一的處理方法已不能滿足當(dāng)前印染廢水發(fā)展的要求。及對(duì)傳統(tǒng)的吸附劑進(jìn)行改良方面?；瘜W(xué)性質(zhì)穩(wěn)定、難溶無(wú)毒、成本低，是理想的光催化劑。
【正文】 eria or improved treatment of dyeing wastewater, resulting in a bioaugmentation. The mechanism for the wastewater treatment system to increase the dominant species in nature or produced through geic technology and efficient bination of bacteria, increased biomass, enhanced biomass response to removal of a particular hazardous substance or class of purpose. At present, the biological technology is the most mon application form directly to the target dosage degradation of pollutants with the effects of microanisms. The application and practice of hightech Photochemical Oxidation Photochemical oxidation due to its mild reaction conditions (ambient temperature and pressure), oxidation capability and speed advantages. Photochemical oxidation of deposition can be divided into light, photosensitization oxidation, light excitation of four oxidation and photocatalytic oxidation. More current research and application of photocatalytic oxidation is. Photocatalytic oxidation can effectively destroys many structural stability Di difficulty to the degradation of anic pollutants, Juyou energy efficiency, pollution and other degradation Chedi advantages, almost all of the anic matter in the next Ke Yi Guang plete oxidation catalyst for the CO2, H2O and other inanic Jian Dan material. However, the photocatalytic oxidation effect of high concentrations of waste water is not ideal. On the photocatalytic degradation of dyes in the light focused on the study of catalysts. Which, TiO2 chemical stability, insoluble nontoxic, low cost, is an ideal photocatalyst. Conventional powdertype TiO2 photocatalyst separation because of the difficulties and shortings such as not suitable for mobile systems, it is difficult to apply in practice. In recent years, TiO2 photocatalyst mixed technology, modification of a hot topic. Membrane Separation Technology Membrane separation technology of dyeing wastewater by the pollutants in wastewater the separation, concentration and recovery of waste water treatment to achieve the purpose. With no secondary pollution, low energy consumption, can be recycled, wastewater reuse, etc directly. Although membrane separation technology has so many advantages, but there are also unresolved problems, such as membrane fouling, membrane flux, membrane cleaning, and acid resistant membrane material, corrosion resistance and other problems, so at this stage the use of a single membrane separation technology of dyeing wastewater, recycling pure dyes, there are still technical and economic and other issues. Now membrane ultrafiltration membrane treatment technologies, nanofiltration membrane and reverse osmosis membrane. Membrane Treatment of dyeing wastewater salts and COD removal are very good role. 3 Conclusion With increasingly stringent emission standards, national scholars in the printing and dyeing wastewater treatment technologies indepth exploration. We believe that with the continuous progress of science and technology, printing and dyeing wastewater treatment process will be gradual improvement, investment, low cost, simple processing technology Wastewater treatment will bring new hope.
環(huán)評(píng)公示相關(guān)推薦
鄂ICP備17016276號(hào)-1