废水处理 微生物吸附用沸石滤料
欣悦净水材料所产沸石滤料是一种极性物质，是极性很强的吸附剂，对极性分子和不饱和分子有机物，
如卤代烃有很强的吸附效果，对非极性分子中极化率大的分子也有较高的选择吸附优势。
沸石滤料目前有两种:天然斜发沸石滤料和活化沸石滤料。
一、天然斜发沸石滤料：
天然沸石是铝硅酸盐类矿物，外观呈白色或砖红色，属弱酸性阳离子交换剂，经人工导入活性组分，
使其具有新的离子交换或吸附能力，吸附容量也相应增大。主要用于中小型锅炉用水的软化处理，以除去
水中的钙、镁离子，从而减少锅炉内水垢的生成，减轻水测金属的腐蚀，延长锅炉的使用寿命。在废水处
理中，可用于除去水中的磷和铅以及六价铬。失效后的沸石可用于浓盐水逆流再生后重复使用。
比重 g/cm3 | 2.0 ~ 2.6 | 含泥量 % | ≤1.0 |
容重 g/cm3 | 1.6 | 水分 % | ≤1.5 |
磨损率 % | ≤1.0 | 钠离子交换能力 g/cm | ≥800 |
二、活化沸石滤料：
活化沸石是天然沸石经过多种特殊工艺活化而成，其吸附性能比天然沸石更强，离子交换性能也更好，
不仅能去除水中的浊度、色度、异味，而且对水中有害的重金属，如：铬、镉、镍、锌、汞、铁离子及有
机物酚、六六六、滴滴涕、三氮、氨氮、磷酸根离子等物质具有吸附交换作用，也有利于去除水中各种微
污染物且水浸出液不含有毒，有害人体物质，去除水中铁、氟效果更为显著。 因此活化沸石是工业给水、
废水处理及自来水过滤的新型理想滤料。
密度 g/cm3 | 1.8 ~ 2.2 | 滤速 m/h | 4 ~ 12 |
容重 g/cm3 | 1.4 | 磨损率 % | <0.5 |
空隙率 % | ≥50 | 破碎率 % | <1.0 |
比表面积 m2/g | 500 ~ 800 | 含泥量 % | <1.0 |
盐酸可溶率 % | ≤0.1 | 全交换工作容量 mg/g | 2.2 ~ 2.5 |
用沸石作为BAF滤料可以有效地去除COD、氨氮和浊度、试验条件的最佳水力负荷为2.2m/h (水力停
留时间为1.4h)、此时对COD、氨氮和浊度的去除率分别为73.9%、88.4%和96.2%、相应的出水平均浓
度分别为43.4mg/L、3.5mg/L和3.7 NTU、可以达到国家环保总局的冷却回用水水质建议值（III）中相关
指标的要求。采用沸石和砂滤料作为BAF滤料处理纺织废水。细胞计数结果表明、沸石滤料上生长的亚硝化
单胞菌和硝化菌的数量分别为3.0×108和2.2×109 CFU/ml。而砂滤料上生长数量是4.5×108和6.5×108 CFU/ml。从硝化菌的数量来上看，沸石滤料上更适宜微生物的硝化作用，另外从对有机物和TKN的去除来看、
以沸石为滤料的BAF的效果要好于以砂为滤料的BAF。采用沸石作为滤料的BAF可使纺织废水的COD去除率达86%~92%、BOD去除率达99%，色度去除率在77%-79%，这是由于自然沸石滤料的比表面积大于砂滤料，
宜于微生物的附着，且沸石滤料的离子交换能力强，能够吸附水中的NH4+，而适宜环境的硝化菌的大量生长，使NH4+转化为硝酸盐。
Product introduction:
Xinyue water purification materials produced by zeolite is a kind of polar substances, is a strong polar adsorbent and of polar molecules and unsaturated organic molecules, such as halocarbons have a strong adsorption effect, for non polar molecular polarizability of molecules also have higher adsorption of advantage.
There are two kinds of zeolite filter media: natural and inclined zeolite filter media and activated zeolite.
One, natural oblique hair zeolite filter:
Natural zeolite is a kind of aluminum silicate minerals, the appearance of white or red brick, is weakly acidic cation exchange, the artificial introduction of active components, so it has a new ion exchange or adsorption capacity, adsorption capacity is also increased. Mainly used for small and medium sized boiler water softening treatment, to remove the water calcium and magnesium ions, thereby reducing generation of water scale in the boiler, reduce the water in the determination of metal corrosion, prolong the service life of the boiler. In the wastewater treatment, phosphorus and lead and the six valence chromium can be used to remove water. After the failure of the zeolite can be used for the regeneration of concentrated brine after repeated use.
Two, activated zeolite filter:
Activated zeolite is a natural zeolite after many kinds of special process activation and, adsorption properties of natural zeolite is stronger than, ion exchange performance is better, not only can remove water turbidity, color, odor and substance of water of harmful heavy metals, such as chromium, cadmium, nickel, zinc, mercury, iron ion and organic phenol, BHC, DDT, nitrogen, ammonia nitrogen, phosphate ions has exchange adsorption, also facilitates the removal of water and various micro pollutants, and water leaching solution does not contain toxic and harmful to the human body material, removal of iron in water, the effect of fluoride is more significant. Therefore, activated zeolite is a new type of ideal material for industrial water supply, wastewater treatment and water filtration.
Product use:
Using zeolite as the BAF filter can effectively remove COD, ammonia nitrogen and turbidity, the optimal hydraulic loading of 2.2m/h (hydraulic retention time 1.4h), at this time, COD, ammonia nitrogen and turbidity removal rate was 73.9%, 88.4% and 96.2%, respectively, the corresponding effluent average concentrations were 43.4mg/L, 3.5mg/L and 3.7 NTU, can reach the National Environmental Protection Agency (III) of the relevant indicators of the relevant indicators. Treatment of textile wastewater by zeolite and sand filter material as BAF filter media. Cell counting results showed that, number of nitrosation of zeolite on growth of single cell bacteria and denitrifying bacteria were 3.0 x 108 and 2.2 x 109 CFU / ml and sand filter on the growth of the number of are 4.5 x 108 and 6.5 x 108 CFU / ml from the number of nitrifying bacteria, zeolite is more suitable for nitrification of microorganisms, also from the removal of view, using zeolite as the BAF filter is better Yu Yisha filter BAF organic matter and TkN. Using zeolite as the BAF filter can make the textile wastewater COD removal rate reached 86%~92%, BOD removal rate of 99%, the removal rate of color in the 77%-79%. This is due to the natural zeolite filter specific surface area is greater than that of the sand filter, suitable for microbial attachment and zeolite ion communication capability is strong to adsorption of NH4 +, and the suitable environment of nitrifying bacteria thrive, NH4 + was converted to nitrate.
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