查询词典 activated sludge

The performance and the sludge characteristics of an upflow anaerobic sludge blanket reactor were investigated for the treatment of low concentration (COD 400～600 mg·L-1) domestic wastewater at psychrophilic temperature (15±1℃).

考察了厌氧处理低温(15±1℃低浓度(COD 400～600 mg·L-1)模拟生活污水试验规模UASB反应器的工作状况及污泥特性。

The invention belongs to the technical field of environmental protection and in particular relates to a method for utilizing the fermentation effect of microbe in remained sludge to increase the propionic acid content in organic acid which is produced under the normal temperature through replenishing carbohydrate and controlling the pH value when in reaction, the method takes the remained sludge of sewage treatment plants and mixture of urban putrescible organic waste which is produced in everyday life as raw materials.

本发明属于环境保护技术领域，具体涉及一种通过补充碳水化合物和控制反应时的pH值，以污水处理厂的剩余污泥和日常生活中产生的城市易腐有机废物的混合物为原料，在常温条件下利用剩余污泥中微生物的发酵作用提高所生产有机酸中丙酸含量的方法。

The method of the invention not only realizes the quantitative reduction, the stabilization and the resource utilization of the remained sludge and the urban putrescible organic waste, reduces the pollution of the remained sludge and the urban putrescible organic waste to environment, but also produces the organic acid which is beneficial for saprobe and the microbe which removes phosphor and nitrogen.

本发明不仅实现了剩余污泥和城市易腐有机废物的减量化、稳定化和资源化，减少了二者对环境的污染，同时产生了对污水生物除磷脱氮微生物有利的有机酸。

The results of batch experiments showed that the anaerobic biodegradation kinetics of 2-CNB and 4-CNB by granular sludge were follwed by first-order reaction. The nitro groups of 2-CNB and 4-CNB were more easily attacked by electron than chlorines and they were reductively biotransformed to amino groups under anaerobic conditions. The acclimated anaerobic granular sludge, which could dechlorinate 4-chloroanline to aniline, showed that it had the ability of para-dechlorinating. The anaerobic biodegradating on pathway of 2-CNB and 4-CNB were suggested as follows:AbstractIn ZVI(zero-valent iron, Fe0)-reduction system, the nitro groups of 2-CNB and 4-CNB were reductively transformed to amino groups.

2分批试验结果证明，颗粒污泥降解2-CNB和4-CNB遵循一级动力学，在厌氧条件下，CNB发生序列的硝基还原与脱氯作用，苯环上的硝基比氯原子更容易受到亲电子攻击，发生还原反应生成氨基；所获得的颗粒污泥具有对位脱氯活性，可使4-CA进一步脱氯形成苯胺。2-CNB和4-CNB厌氧降解的建议性途径为： ZVI(Zero-valentiron)对2-CNB和4-CNB的作用主要是将苯环上的硝基还原为氨基；在ZVI与污泥共还原转化体系中，ZVI对氯代硝基苯的硝基转化具有一定的促进作用，但因ZVI对中间产物的吸附特性，终产物形成速率趋慢。

The invention employs waste glass power and sludge as main raw materials in the ceramsite formula, and one of sodium silicofluoride and borax as auxiliary raw material, then super lightweight ceramsite of baking sludge glass is baked at low temperature, the invention has the advantage of energy conservation.

本发明陶粒配方以废玻璃粉和污泥为主要原料，以氟硅酸钠和硼砂之一为辅助原料，低温烧成污泥玻璃超轻陶粒，具有节能的优点。

When the uncoupler concentration was constant, sludge yield increased with the increasing sludge concentration.

污泥的比氧气消耗速率和脱氢酶活性都比对照污泥要高，说明TCS对污泥中的微生物有激活作用，促进能量泄漏，这是造成污泥产率降低的原因所在。

In this thesis, the mechanismof action of using the chemical uncoupler reducing the excess sludge productionare discussed, several common chemical uncoupler and their effectiveness areintroduced, the potential problem of using the chemical uncoupler reducing theexcess sludge production and the further research direction are put forward.

本文阐述了用化学解偶联剂减少剩余污泥产量的作用机理；结合国内外研究现状，分别介绍了几种常用的化学解偶联剂及其作用效果；并提出了在活性污泥工艺中加入化学解偶联剂存在的问题以及将来的研究方向。

The fresh dewater digested sludge of municipal wastewater treatment plant was suited for vaccinal sludge at the startup of anaerobic reactor and the concentration should not be less 10mg/L; the COD of feed wastewater should be lower than 5000mg/L, and VOL was 20 percent of total VOL; the alkalinity of effluent should be more than 3000mg/L; on the condition of the COD removed 80% can the VOL be elevated.

反应器启动时接种污泥可以选用城市污水处理厂新鲜的脱水消化污泥，浓度不低于10mg/L；进水有机物浓度不高于5000mg/L，容积负荷为满负荷的20％；出水碱度要高于3000mg/L，温度稳定；在有机物的降解率达到80％后再提高负荷。

Sewage sludge contains various kinds of pathogenic bacteria and heavy metals, which may cause serious environmental pollution if without correct dispose. On the other hand, sludge also contains various kinds of nutritious elements which are necessary for plant growth. It would be resources wastement if it is not reasonably utilized.

污泥中含有大量的病原体、重金属等有害物质，如不加以有效的处置，必将产生严重的二次污染；但是污泥中还含有大量的有机物和植物生长所需的营养物质，如不加以合理的利用，又是资源的巨大浪费。

in this paper, the analysis and summarize of filamentous bacteria caused sludge bulking phenomena have been conducted. based on generalized monod model, an unified theory for sludge bulking has been proposed.

环境摘要：本文对丝状菌污泥膨胀现象进行分析和综合，并在广义的monod方程的基础上，提出了统一的污泥膨胀理论。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。