查询词典 sludge acid

In order to research the relations of carbon sources to structure of PHAs, six kinds of PHAs sample were synthesized by activated sludge with six different carbon sources respectively in the aerobic-anaerobic-anoxic process. Their structures were determined by 〓HNMR、〓CNMR and GC-MS. When the carbon source was acetate, the unit composition of PHAs was 93. 91mol％ 3-hydroxybutanoic acid and 6. 09mol％ 3-hydroxypentanoic acid ; When the carbon source was propionate, the unit composition of PHAs was 28. 66mol％ HB, 63. 13mol％HV, 2. 55mol％ 2-methy-3-hydroxy-butanoic acid (2MHB) and 5. 66mol％ 2-methyl-3-hydroxypentanoic acid (2MHV); When the carbon source was 80％ butyrate and 20％ 1, 4-butanediol, the unit composition of PHAs was 65. 03mol％ HB, 28. 06mol％HV, 1. 91mol％2MHB, 2. 69mol％ 2MHV, 0.73mol％ 4-hydroxy butanoic acid (4HB), 0.78mol％ 4-methyl-3-hydroxy-pentanoic acid (4MHV), 0.80mol％ 3-hydroxyhexanoic acid ; When the carbon source was 20％ butyrate and 80％ 1, 4-butanediol, the unit composition of PHAs was 61. 39mol％ HB, 23. 01mol％HV, 4. 58mol％2MHB, 5. 97mol％ 2MHV, 0.91mol％ 4HB, 2. 37mol％ 4MHV, 1. 77mol％ HHx; When the carbon source was 60％ pentanoate and 40％glucose, the unit composition of PHAs was 41. 24mol％ HB, 58. 76mol％HV; When the carbon source was 60％ benzoate and 40％ glucose, the unit composition of PHAs was 65. 48mol％ HB and 34. 52mol％ HV.

为了研究不同碳源与产物PHAs结构的关系，采用好氧-厌氧-缺氧模式利用6种不同碳源培养活性污泥得到6种不同的PHAs样品，通过〓HNMR、〓CNMR和GC-MS谱图确定了这6种PHAs的单体成分和比例：以乙酸钠培养活性污泥得到的PHAs的单体组成是93.91mol％3-羟基丁酸和6.09mol％3-羟基戊酸；以丙酸钠培养活性污泥得到的PHAs的单体组成除28.66mol％HB、63.13mol％HV外，另外还有2.55mol％3-羟基2-甲基丁酸（2MHB）和5.66mol％3-羟基2-甲基戊酸（2MHV）；以80％丁酸钠和20％1，4-丁二醇混合溶液培养活性污泥得到的PHAs含有七种单体组成：65.03mol％HB，28.06mol％HV，1.91mol％2MHB，2.69mol％2MHV，0.73mol％4-HB（4-羟基丁酸），0.78mol％4MHV（3-羟基-4-甲基戊酸），0.80％HHx（3-羟基己酸）；以20％丁酸钠和80％1，4-丁二醇培养活性污泥所得到的PHAs含有与3#样品相同的七种单体，只是比例不同，分别是61.39mol％，23.01mol％，4.58mol％，5.97mol％，0.91mol％，2.37mol％，1.77mol％；以60％戊酸钠和40％葡萄糖培养活性污泥所得到的PHAs由HB和HV组成，比例是41.24 mol％∶58.76 mol％；以60％苯甲酸钠和40％葡萄糖培养活性污泥所得到的PHAs也由HB和HV组成，比例是65.48 mol％∶34.52 mol％。

LCFAs showed inhibition to anaerobic granular sludge, among which nheptanoic acid, capric acid and oleic acid showed stronger inhibition.

LCFA对厌氧颗粒污泥产甲烷活性有严重抑制，其中毒性较大的有庚酸、癸酸和油酸。

The toxicity of caprylic acid,capric acid and lauric acid toanaerobic granular sludge as well as the influence of capric acid on toxicity of caprylic acid and lauric acid were studied in batch assays.

采用间歇培养实验研究了辛酸、癸酸和月桂酸等三种长链脂肪酸对UASB反应器厌氧颗粒污泥产甲烷活性的毒性，以及癸酸对辛酸和月桂酸抑制作用的影响。

The results showed that caprylic acid,capric acid and lauric acid had strong inhibition on methanogenic activity of anaerobic granular sludge.The concentrations of three long-chain fatty acidswhich inhibited 50%of maximum specific methanogenic activity(IC50)of anaerobic granular sludge were 5.6, 1.9, 4.6 mmol.L-1 respectively,among which carpic acid was the most toxic.

结果表明，辛酸、癸酸和月桂酸对UASB反应器厌氧颗粒污泥的产甲烷活性有严重抑制，对厌氧颗粒污泥最大比产甲烷活性产生50%抑制的浓度(IC50)分别是5.6，1.9，4.6mmol.L-1，其中癸酸的毒性最大。

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。

To resolve the sludge acid problem in the conventional DAP production,the integrated production technology of MAP and DAP developed in China was first applied in Guizhou Hongfu at the end of 2001,which has achieved satisfactory results.

为解决传统法生产DAP存在的淤渣酸问题，2001年底我国自行开发的MAP与DAP联产技术率先在贵州宏福公司实施，取得了良好效果，经进一步完善，已有多套联产装置达产达标。

In order to prevent the acid sludge forming during acidizing treatment for Putaohua formation in Daqing peripheral oilfield, the research on colloid and bitumen in oil, acid system, ferric ion and anti -sludge agent has been carried out to determine the possibility of sludge forming.

从立足于研究大庆外围葡萄花油层原油防止酸渣形成的方法入手，从原油胶质沥青质、酸液类型、三价铁离子和各种类型的抗渣剂等方面，考察了大庆外围葡萄花油层的原油与酸接触，形成酸渣的可能性。

CTAC had the best effect, bringing the sludge cake moisture down to 68%. At 0℃, the above test was also done for the following conditions: untreated, CPAM, FeC13/CaO, and acid conditioning. The sludge cake moisture is lower at 0℃ than that at normal temperature. The untreated sludge and pH=2 sludge had the lowest moisture. At -15 ℃, CTAC brought the sludge cake moisture down to 62.8%, 6% lower than at normal temperature.

结果表明，CTAC对污泥的调理效果最好，可使污泥滤饼含水率降至68%。0℃时，未经处理、CPAM、FeCl3/CaO、加酸处理条件下污泥脱水效果较常温时都有不同程度的提高，效果最好的为未经处理和pH=2条件下的泥样；-15℃时，CTAC条件下滤饼含水率较常温下降了约6%，达到62.8%。

Hydrogen production of heat treatment sludge, acid treatment sludge, normal sludge, base treatment sludge and ultrasonic sludge from simulated wastewater by anaerobic sewage were investigated. The substrate containing glucose was treated with anaerobic heat treatment sewage sludge. The biohydrogen was produced through anaerobic hydrogen fermentation.

试验研究了酸处理、碱处理、热处理、超声波预处理厌氧污泥发酵产氢的产氢量，选择产氢量最高的热预处理后的污泥作为混合微生物系，以葡萄糖为基质，研究了温度、pH值、底物浓度对厌氧污泥发酵产氢量的影响。

The results indicated that anaerobic sludge could only decompose Acid Mordant Dark Yellow GG in the presence of glucose while aerobic sludge decomposes Acid Mordant Dark Yellow GG with or without the presence of glucose.

试验结果表明，厌氧菌能够通过葡萄糖共代谢作用很快降解酸性媒介黄GG；而好氧条件下经驯化活性污泥不能降解酸性媒介黄GG，经过较长时间驯化活性污泥能降解酸性媒介黄GG，但降解效果很差。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。