氨氮

This paper summarized literature about the structure, adsorption dynamics and thermodynamics, modification of zeolite and its application in wastewater treatment. Based on them, the conditions of zeolite modifying by AlCl_3 was explored, the adsorption properties natural zeolite to ammonia nitrogen and adsorption effects of aluminum modified zeolite to phosphor in solution was researched, the existing form of ammonia nitrogen was investigated by cyclic voltammeter.

本文在对沸石的结构、沸石吸附动力学、热力学、沸石改性及其在废水处理中的应用等相关文献综述的基础上，探索了用AlCl_3溶液改性天然沸石的条件，考察了天然沸石和铝改性沸石对溶液中氨氮的吸附性能以及对溶液中总磷的吸附效果，以及用循环伏安法探讨了水体中氨氮的存在形式。

The constructed wetland process was applied to treat rural domestic sewage. The results showed that the abilities of different macrophyte species to remove nitrogen and phosphorous were quite different with each other. Acorus calamus Linn has stronger ability to remove TP and NH3-N.

采用潜流式人工湿地工艺处理农村生活污水，结果表明：不同植物对氨氮、总磷的去除能力差别较大，菖蒲对总磷和氨氮净化效果较好。

Blowing can take off the ammonic nitrogen efficiently, the rate of removing the ammonic nitrogen reaches 90%....

实验结果表明，采用吹脱法能有效去除氨氮，控制PH在7.5左右，氨氮去除率可达90％以上。

The sewage flows from pool to plant, passing through retention reservoir to adjust PH value, into removing ammonia with temperature increasing to 20℃,into UASB reactor with temperature increasingto 35℃ to remove off COD and ammonia under the function of anaerobia, then into SBR reactor to remove BOD under the function of aerobia. When the biochemical disposal is completed, the processed sewage will come into the UF system to remove adsorbed solid, organic matter, bacteria, and pathogens in waterand finally come into the RO system to remove off dissolvable salinity, colloid, organic matter, and microbe in water.

垃圾渗滤液经储存池进入污水处理厂，经调节池调整PH值，经1#加热器升温到20℃进入氨吹脱塔脱氨氮，再经2#加热器升温到35℃进人UASB生物反应器，在厌氧菌的作用下降解COD和脱氮，再进入SBR生物反应器，在好氧菌的作用下降解BOD，完成生化前处理后转入UF超滤中空纤维膜系统进行分离处理吸附固体、有机物、细菌、病原体等；最后经高压泵送入进口的RO返渗透中空纤维膜系统中，进行分离处理可溶解盐分、胶体、有机物、微生物等。

Experimental results show that the water velocity is that when the BV ammonia concentration of 50 mg, L - 1 simulation wastewater and 98 mg, L - 1 point of industrial wastewater, penetrate respectively C/C0 = 0.3 and 0.15, water column of natural zeolite could handle respectively; 126 BV, 43 BV Modified zeolite column can handle respectively 157 BV, water, and with 46 BV hydraulic load increases, zeolite column can reduce water treatment, The experiment was found to leak after 8 NaCl solution with zeolite desorption regeneration effect is good, low cost, regeneration of zeolite adsorption capacity decrescent, Test through dynamics analysis found that zeolite column of ammonia nitrogen adsorption fast.

实验结果表明，进水速度为2.72 BV时，通入氨氮浓度为50 mg·L-1的模拟废水和98 mg·L-1的工业废水，此时穿透点分别为C/C0=0.3和0.15时，得到天然沸石柱可处理水量分别为126 BV、43 BV；改性后沸石柱可处理水量分别为157 BV、46 BV，且随水力负荷增大，沸石柱可处理水量减小；试验还发现对泄露后沸石用8%NaCl溶液解吸再生效果好，成本低，再生后的沸石吸附容量变小；试验通过动力学分析发现沸石柱吸附氨氮速度较快。

Aside, the heightener of ammonia-nitrogen removal follows ammonia-nitrogen original concentration.

另外，氨氮去除率随着初始氨氮浓度的增大有明显的提高。

As a kind of low-priced nonmetallic mineral, zeolite has good selective adsorption ability for NH4＋-N. Modifying can even increase this capacity. Clinoptilolite and mordenite have much applying prospect in this aspect. The research on NH4＋-N removal with natural zeolite is sufficient in many countries.

沸石是一种廉价的非金属矿物，对氨氮具有较高的选择吸附性，通过改性处理能大大提高其对氨氮的去除能力，特别是斜发沸石和丝光沸石在这方面有很好的应用前景。

Long running performance showed that due to the membrane interception,the nitrobacter is enriched in reactor in the interest of improving the nitrification rate;the maximum ammonia nitrogen loading can be 0.19 kg/(m3·d) with effluent ammonia nitrogen＜1 mg/L (removal rate 99%).

采用浸没式膜生物反应器处理焦化废水的试验结果表明：膜的截留作用可使硝化菌在反应器内富集而有利于提高系统的硝化能力，其去除氨氮的最高负荷为0.19kg/(m3·d)，出水氨氮＜1mg/L(去除率为99%)；泥龄长可能使微生物的代谢产物或其他大分子物质积累，从而

Oenanthe javanica was satisfied the requirements. In a low temperature of 10~15 ℃, Oenanthe javanica was used to static purify the nitrogen and phosphate in the simulative aquaculture wastewater.

结果表明，在10℃~15 ℃低温条件下，水芹对水体中的氨氮和磷酸盐具强烈吸收作用。4 d中，水芹对3组不同质量浓度污水中氨氮和磷酸盐的去除率分别为：A组79.5%和31.9%，B组82.6%和48.8%，C组99.1%和72.7%。

After introduction of reaction mechanism of LHE water stabilizer containing polyhydroxy carboxylate in CW system and applications in other chemical plants,the author analyzes the feasibility introducing this kind of stabilizer into CW system in nitric acid plant of Sichuan Chemical Co.

介绍LHE聚合羟基羧酸盐水质稳定剂的作用机理以及在其他化工厂循环水系统中的应用实例，设想将LHE聚合羟基羧酸盐水质稳定剂用于我公司硝酸厂循环水系统，将表冷液治理后低浓度氨氮淡水作为循环水系统的补充水，达到氨氮零排放。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。