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。