进行了以不同钙含量的粉煤灰为原料合成的3种沸石对污水中磷去除的试验，探讨了表面交换性阳离子种类、投加量以及磷浓度对除磷的影响。结果表明：最佳投加量为8g/L，磷去除率可达到70% 1，7，上。合成沸石除磷能力均高于粉煤灰，钙饱和处理又可明显进一步提高粉煤灰合成沸石的除磷效果。粉煤灰合成沸石钙含量越高，对磷的去除率越高。因此，采用高钙粉煤灰为原料合成沸石并进行钙饱和处理，可以获得除磷能力强的合成沸石材料。

This study was conducted to verify and discuss the denitrifying dephosphatation under different levels of nitrate concentration and retention time of anoxic/aerobic process in a Sequencing Batch Reactor(SBR).The results of tests demonstrated that there were two kinds of phosph01MS-accumulating organisms(PAOs)in the biological excess phosphorus removal(BEPR)system．One was non-DNPAOs that could only use oxygen as terminal electron acceptors, the other was denitrifying PAOs(DNPAOs)that could use both nitrate and oxygen as terminal electron acceptors. Phosphorus uptake efficiency could be attained under anoxic period ranging from 28.7%-96.7% in an anaerobic/anoxic/aerobic system Experimental results showed that nitrate concentra-tion and retention time of anoxic/aerobic process were the key factors affecting the course of denitrifying dephos-phatation.

以饮用水深度净化工程为基础，研究了臭氧一微滤一生物活性炭吸附一超滤/反渗透比例勾兑流程，对饮用水中的各种污染物质的去除效果。该工艺流程能够有效的去除水中的高锰酸钾指数、254 nm吸光度及细菌等指标，超滤与反渗透比例勾兑调节水中的各种无机离子浓度，不改变各个离子之间的比例。该工艺出水完全满足饮用水净水水质标准。

The aim of the research was to obtain both an excellent effluent for reuse and a reduced sludge production simultaneously by a combinaittion process of anaerobic phase and Membrane biroeactor (MBR)technology in treating domestic wastewater. During the experimental period of three months, excellent removals for COD, NH3-H,TN were obtained, and mean removals were 91.87%, 96.13%, and 69.23%, respectively. Whreas, at first 20 days, the removal for TP was only abut 15.87%. In The following days, about 30% of raw water was introduced into the anaerobic reactor to supply organics for denitrification and release of polyphosphate, then a significant improvement for TP removal was observed, and mean removal of TP increased to 76.35%. During the operational period, it was investigated that the permeate could meet the requirements of several water criteria for reuse except free chlorine, and a mean excess sludge yield coefficient of 0.137g MLSS/g COD was obtained. Therefore, the predicted goals of permeate for reuse and excess slu7dge reduction could be both achieved after dosing a certain quantity of disinfectant into the permeate.

以NaCl为活化剂，15% H2S04为改性剂，采取高温活化后再进行酸处理的方式对粉煤灰进行改性，制备深度除磷剂AFA。经正交试验确定优选的工艺参数为盐灰比1:20，煅烧温度900℃，酸灰比3:1。利用谊工艺制备的AFA去除二级出水中的磷，15s后除磷过程基本完成。当投加量为80mg/L以上时，处理出水磷的质量浓度低于1mg/L，其除磷pH值范围与实际污水相符，最佳除磷pH值为6.5。

The pilot perroamace of the alnbined GAC-MF mmlbrane process fordrinking water advanced treatment was described.In the process of GAC adsorption under the conditions of 20 mill HRT and 6m/h filtration rate, the rexnoval efficiencies of UV254% and trichioromethane could reach 40%and 50% respectively and the uv254 and trichloromethane in system effluent was less than 0.015 cm-1and 5ug/L respectively. In the post MF mcmbrane process, MF membrane effectively retained the particles and bacteria in raw water. The effluent turbidity was less than 0.2 NTU and no bacteria welag detected at all in permeate. A computer-controlled system was employed to control this system. The membrane operating par, ureters of backwash interval, duration and flux welag studied. The backwash interval of 10-min, 20-min and 60-min was researched respectively, and the variation of trans-membrane pressure was also analyzed.Consequently short backwash intervalwas recommended underthe samewater consume.

通过详细论述国内外低压膜技术在饮用水处理中的应用和研究现状，阐明了在饮用水的处理工艺中，低压膜工艺相对于传统工艺和反渗透工艺，在出水水质和处理成本方面具有一定的优势，是制备优质饮用水的有效方法；以超滤膜和微滤膜为代表的低压膜能够截留水中绝大部分的悬浮物、胶体和微生物，对有机物、铁和铝也有一定的去除效率，其产水水质可满足更为严格的饮用水标准。

以粉煤灰为原料，采用水热合成法制备沸石，造粒后合成沸石填充至滤柱中，研究了不同运行条件下合成沸石对污水中磷的净化与回收效果。结果表明：合成沸石对模拟污水和城市生活污水经二级生化处理后的排放水中磷的去除能力相近，且在磷含量低的情况下后者高于前者；与造粒前相比，造粒后的合成沸石仍具有良好的固磷能力，水力负荷明显影响滤柱中磷的去除效果，其在177.9u（n12-h）以下时，磷的去除效果较好。此外，进水pH也明显影响合成沸石的除磷效果，当进水pH调至酸性或碱性范围时，合成沸石的除磷能力显著提高，该滤柱能够长期有效地净化与回收污水中的磷，达到饱和时合成沸石的w（磷）达20.04g/kg（以磷元素计），可实际应用于农田改良。

利用工业废弃物粉煤灰制备活性粉煤灰除磷剂AFA，将AFA与传统的砂滤工艺相结合，用于二级出水中磷的去除。结果表明：当AFA投加量为100mg/L时，可确保滤后水中磷质量浓度<1mg/L，达到GB 18918-2002中一级标准。投药后预沉淀1min可显著延缓水头损失的增加。在无预沉淀、滤速32 m/h的工艺条件下滤床则极易堵塞。水头损失分析显示，过滤中大部分携磷微粒被截留于厚度为160mm的滤床上层。

在前人基础上。考察了在紫外线辐射的条件下，臭氧作为氧化剂在水中的变化情况，分别在有紫外线和没有紫外线的情况下进行了臭氧对于饮用水中有机污染物质去除情况的对比，得出结论。紫外线辐射有效地降低了尾气中臭氧的旅度。对C0D UV054和HCCL的去除都有提高。还分析了臭氧紫外联合氧化系统的影响因素。