高效物化法处理炼油废水

采用斜板式隔油沉淀与两级混凝气浮组成的工艺处理炼油废水。隔油池中设置斜板提高了油与悬浮物的去除率，同时也提高了油的回收量。循环式刮油刮泥机可及时刮除浮油与沉泥。混凝使胶粒与乳化油粒脱稳、聚集，易被气浮法去除。两级气浮串联使气浮系统的去除效率高并运行稳定。     

粉煤灰在处理造纸废水中的应用

参考国内外有关粉煤灰处理造纸废水的资料 ,综合分析讨论了粉煤灰处理造纸废水的机理、工艺流程和处理效果     

Study on the effects of organic matter characteristics on the residual aluminum and flocs in coagulation processes

Characteristics of organic matter may affect the residual aluminum after the coagulation process. This study reported the results of a survey for one drinking water treatment plant and measured the concentration of residual aluminum species with different molecular weights.Survey results indicated that humic acid or organic matter whose molecular weight was smaller than 1500 Da had significant effects on residual aluminum. All the treatment processes were ineffective in removing dissolved organic matter whose molecular weight was smaller than1500 Da. These results also indicated that the addition of sand or polyacrylamide in the coagulation process could greatly decrease the concentration of humic acid, and the concentration of residual aluminum also decreased. These results revealed that for all water samples after filtration, the majority of total residual aluminum existed in the form of total dissolved aluminum, accounting for 70%–90%. The concentration of residual aluminum produced in bovine serum albumin solutions indicated that when the DOC was larger than4.0 mg/L, there were still significant differences when the solution p H value varied from 4.0 to 9.0.     

高浓度豆制品废水预处理实验研究

对高浓度豆制品废水的预处理方法作了实验研究。采用调节等电点酸沉降的方法回收蛋白质,然后用聚合硫酸铁化学混凝处理上清液以降低COD的含量。实验证明了方法的可行性并得出了最佳实验条件。     

Enhanced cross-flow filtration with flat-sheet ceramic membranes by titanium-based coagulation for membrane fouling control

• Ceramic membrane filtration showed high performance for surface water treatment. • PTC pre-coagulation could enhance ceramic membrane filtration performance. • Ceramic membrane fouling was investigated by four varied mathematical models. • PTC pre-coagulation was high-effective for ceramic membrane fouling control. Application of ceramic membrane (CM) with outstanding characteristics, such as high flux and chemical-resistance, is inevitably restricted by membrane fouling. Coagulation was an economical and effective technology for membrane fouling control. This study investigated the filtration performance of ceramic membrane enhanced by the emerging titanium-based coagulant (polytitanium chloride, PTC). Particular attention was paid to the simulation of ceramic membrane fouling using four widely used mathematical models. Results show that filtration of the PTC-coagulated effluent using flat-sheet ceramic membrane achieved the removal of organic matter up to 78.0%. Permeate flux of ceramic membrane filtration reached 600 L/(m²·h), which was 10-fold higher than that observed with conventional polyaluminum chloride (PAC) case. For PTC, fouling of the ceramic membrane was attributed to the formation of cake layer, whereas for PAC, standard filtration/intermediate filtration (blocking of membrane pores) was also a key fouling mechanism. To sum up, cross-flow filtration with flat-sheet ceramic membranes could be significantly enhanced by titanium-based coagulation to produce both high-quality filtrate and high-permeation flux.     

高浓度洗煤废水治理方法的研究

分析了高浓度洗煤废水的性质及其难于处理的原因，提出了采用ＣａＣｌ２＋ＰＡＭ混凝沉淀法处理该种废水的方法，并通过实验确定了主要技术参数．实验结果表明，该方法处理效果显著，不仅有较高的清水分离率，而且出水的各项指标均达到国家排放标准．     

四环素工业废水生化处理工艺的研究

本文报道了四环素生产废水絮凝处理的最佳组合是１５ｍｇ／ｋｇ聚丙烯酰胺＋３０００ｍｇ／ｋｇ硫酸亚铁；经驯化的接种水测出ＣＯＤ为２７６４ｍｇ／Ｌ时，废水的ＢＯＤ５为１８７３ｍｇ／Ｌ，ＢＯＤ５／ＣＯＤ≈６８％，属易生化处理范畴。生物膜处理可在２ｄ内将ＣＯＤ从４４８８ｍｇ／Ｌ降至５４９ｍｇ／Ｌ，处理中的优势菌群为Ｇ＾＋芽孢杆菌。经γ射线辐射后，废水对细菌不再有抑制作用。     

Polytitanium sulfate (PTS): Coagulation application and Ti species detection

Interest in the development of inorganic polymerized coagulants is growing; however, there are only limited studies on the synthesis of polytitanium coagulants, which are expected to exhibit improved coagulation efficiency with better floc properties. This study presents the synthesis of polytitanium sulfate (PTS) for potential application in water purification, followed by characterization of PTS flocs and titanium species detection. Stable PTS solutions were successfully synthesized and standard jar tests were conducted to evaluate their coagulation efficiency. Electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS) speciation analysis revealed that a variety of mononuclear and polynuclear complexes were formed in PTS solution, indicating the polymeric nature of the synthesized coagulant. Floc characteristics were studied through on-line monitoring of floc size using a laser diffraction particle size analyzer. Results showed that PTS had a comparable or in some cases even higher organic matter and particulate removal efficiency than Ti(SO₄)₂. The effluent pH after PTS coagulation significantly improved toward desirable values closer to neutral pH. Properties of flocs formed by PTS were significantly improved in terms of floc size, growth rate and structure. This study showed that PTS could be an efficient and promising coagulant for water purification, with the additional benefit that its coagulated sludge can be used to recover valuable TiO₂ nanoparticles for various commercial applications.     

水解──好氧混凝工艺处理啤酒厂废水

本文报道了用上升流厌氧污泥床（水解）和二段生物接触氧化池对啤酒厂废水进行的生化处理中试。当上升流厌氧污泥床进水CODer浓度为2000mg／L，经水解─好氧工艺处理后，第二段生物接触氧化池出水CODcr浓度为220．5mg／L，进一步经混凝沉淀处理后，出水CODcr达80．2mg／L。     

KHYC絮凝剂处理工业废水的探讨

文中详细地论述了KHYC型有机离分子絮凝剂对几种工业废水的处理效果，分析了影响絮凝效果的主要因素。试验结果表明：对于SS这一指标，无论何种废水，其去除率均在94％以上。但对于CODCr若是高浓度有机废水，其去除率仅在40％左右，尚需另设其它工艺作进一步处理。