查询词典 wastewater

By using model Caenorhabditis elegans, the toxicity of purified terephthalic acid wastewater was evaluated through a battery of biotest, including life span, days of 50% lethal, generation time, brood size, head thrashes, and body bends.

应用模式生物秀丽隐杆线虫，通过生命周期、半数致死天数、生殖速度、产卵数、头部摆动频率和身体弯曲次数等指标对精对苯二甲酸废水毒性进行了研究。

The experiment results shown that: 1 the smaller the pH value, the smaller the use amount of alkaline metal and the alkali earth metal electrolyte demulsifier, when the pH value was 3, the waste fluid could be demulsified no any demulsifier and the use amount of the demulsifier did not increase remarkably along with the wiredrawing fluid concentration increased. 2 Using polymeric ferric sulfate as coagulant demulsifying, when the pH value was 8.4, the best adding amount was 40 mL per liter wastewater and the best precipitation time was 4 hours. Then the COD concentration was 480 mg/L, reaching the water quality requirements to enter the sewage treatment plant.

pH值越小，碱金属和碱土金属电解质破乳剂的用量越小，pH值为3时，无须加入任何破乳剂即可破乳；破乳剂用量并不随拉丝液浓度的增大而显著增加。2）用混凝剂聚合硫酸铁破乳，在pH值8.4时，最佳投加量为40 mL/L，最佳沉淀时间4 h，处理后上清液COD浓度为480 mg/L，能满足进入污水处理厂水质要求。

Discharge site that received a lot of wastewater was a main factor for the accumulation of OM and KTN in the sediment, but not for TP.

沉积物的有机质和凯氏氮含量受排污口影响明显；但沉积物总磷含量受排污口影响不明显。

Calcium oxide and mineralized rubbish column were used to treat power plant boiler acid washing wastewater.

采用生石灰与矿化垃圾柱相结合的工艺处理电厂锅炉酸洗废水，考察了生石灰投加量、搅拌时间、温度及矿化垃圾柱高度对处理效果的影响。

The hard carbon in electrolysis process was used to treat the acid red B dye wastewater as an pre-treatment method.

采用铁碳内电解法对酸性红B染料废水进行处理。

The method of extracting mixed fatty acid from suspended sludge in milk wastewater is introduced.

介绍了从乳品废水浮查中提取混合脂肪酸的方法。

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。

During the acid washing process of steel tube,it can produce much acid wastewater which contains metal ions.

含有金属离子成分的酸性废水一般采用石灰乳中和法进行处理，但该方法处理后生成的沉淀密度较小，沉降效率较低，外排水水质变化较大。

In this paper, sludge activated carbon was prepared from municipal wastewater treatment plant sludge using chemical activation (the activation reagent was ZnCl2), and the kinetics of adsorption of three dyes (Reactive Brilliant Red K-2BP, Acid Scarlet GR, Direct Violet N) by SAC was studied.

以城市污水处理厂脱水污泥作为原料，采用化学活化法（ZnCl2作为活化剂）制得污泥活性炭，全面研究了污泥活性炭对活性艳红K-2BP、酸性大红GR和直接紫N这3种染料的吸附动力学行为。

The essay studies dye wastewater sewage of four different structures Acid OrangeⅡ、Alizarin Violet、Neutral Red、Fuchsin Basic with the techniques of catalytic oxideFe~(3+)/H_2O_2, Cu~(2+)/H_2O_2, Fe~(3+)/Cu~(2+)/H_2O_2 and examines the original PH value, period ofresponse and the effects of different proportion of Fe~(3+)and Cu~(2+) on the process to treatsewage and explores the process of techniques in Fe~(3+)/Cu~(2+)/H_2O_2 system.

用Fe~(3+)／H_2O_2、Cu~(2+)／H_2O_2、Fe~(3+)／Cu~(2+)／H_2O_2催化氧化工艺对四种不同结构的模拟染料废水酸性橙Ⅱ、茜素紫、中性红、碱性品红进行了研究，考察了初始pH值、反应时间及不同Fe~(3+)、Cu~(2+)比对处理过程的影响，探讨了Fe~(3+)／Cu~(2+)／H_2O_2体系的工艺流程。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。