出水

Experiment results as follows: the COD consistency of second retting water was 6000 to 7100mg/L, but the COD consistency could reach 1779.50—2198.3 mg/L after consumption by anaerobic microbe in UASB. The remove rate of COD can achieve 66% or more, and water affluently was stable.

研究表明：沤麻"二遍水"COD在6000～7100mg／L之间，经过UASB反应器中厌氧微生物的降解，出水COD在1779.50--2198.3mg／Lmg／L之间，去除率保持在66％以上，而且出水水质比较稳定。

For the aim of saving energy and optimizing control of chilled systems, the performance of VWV systems and characteristics of control systems were analyzed based on the simulation. According to the characteristic of the monitored parameters and controlled variables in VWV systems, three online optimal control strategies were proposed and validated:(1) Optimal strategy for on/off control of chillers according to the ratio of secondary flow rate to primary flow rate.(2) Optimal strategy for the control of secondary pump according to value positions of auto-controlled AHU vales. And (3) Optimal strategy for supply chilled water temperature control of chillers according to valve positions of auto-controlled AHU valves and working status of secondary pump.

为达到节能和优化系统控制的目的，在楼宇空调水系统及其局部控制仿真分析的基础上，针对变流量系统监测点和可调参数较多的特点，提出并验证了3个实时优化控制方案：根据初级和二级冷谋水流量的比率，实时优化多台冷水机组的启／停控制；利用AHU自动控制水阀的阀位信息，实时优化二级水泵的控制；利用AHU自动控制水阀的阀位信息以及二级泵的工作状况，实时优化冷水机组出水温度的控制。

The method comprises the following steps: according to the raw water quality, the change of the number of bacteria inside the sedimentation tank and the water quality of the backflush yielding water, the backflush yielding water in the sedimentation tank is collected and deposited in a backflush phase of a working period; supernatant fluid containing mass active bacteria and soluble nutrient elements reflow to the sedimentation tank; total or partial sediment containing soluble nutrient elements in an underlayer reflow to the sedimentation tank and is reutilized by mass microorganisms in the sedimentation tank, thereby replenishing the nutrient substrate needed for microorganism growth, proliferation and metabolism under the condition of the low nutrition substrate, and maintaining the ecological stability in the sedimentation tank.

该方法根据原水水质和生物滤池内部细菌数量的变化以及反冲洗出水的水质，将生物滤池工作周期中反冲洗阶段的反冲洗出水收集并沉淀，将其含有大量活性细菌和溶解性营养元素的上清液回流至生物滤池，下层含有不溶性营养物质的沉淀全部或部分回流至生物滤池，被生物滤池当中的大量存在的微生物重新利用，从而补充在低营养基质条件下，微生物生长、增殖和新陈代谢所必需的营养基质，维持生物滤池当中的生态稳定。

A 5. 5h anti-impinge test indicated that the whole technical process had a better anti-impinge ability The feasibility modeling test of water quality showed that the quality of reclaimed water after the treatment by the above process, when used as supplementary circular cooling water and boiler water, met the nation standards in the respect of corrosion, scaliness and bacteria breeding, and even better than the normally used cooling water.

以炼厂实际外排污水为原水，通过两期水力负荷分别为0.2m3/h和0.5m3/h中试规模测试，当本工艺处理水力负荷0.5m3/h、水力停留时间1.49h，污水中COD、氨氮、石油类、悬浮物、挥发酚的浓度变化分别为44.07～102.13mg/l、28.37～50.01mg/l、4.68～19.36mg/l、7.2～34.5mg/l、0.14～0.31mg/l时，平均去除率分别达到94％、96.1％、91.9％、98.2％、100％，出水各项指标均符合循环水补充水水质要求；且通过5.5h抗冲击实验结果显示，整体工艺具有较强的抗冲击能力。

The result makes clear, 2 class give urban sewage plant on the molecular quantity interval that organic owner should center the dissolvability in water water in kDa, and the content of organic matter compares hydrophoby the element of content big; of organic matter measures hydrophily interval distributings different organic thing shows water to accept filter film flux and hold back rate having distinct effect, the organic matter under molecular quantity 2kDa causes accept filter film to appear water flux attenuation bigger, organic matter is held back rate is minor, the organic matter that amounts to 57.2%; element to measure 10 ～ 100kDa causes accept filter film to appear water flux attenuation gentlier, organic matter is held back rate is older however highest the organic matter that amounts to 73.8%; to kiss scanty sex to differ shows water to accept filter film flux and hold back rate having distinct effect, classics is right of velar surface obstruction determine, confirm cause film to appear water flux and the main material that hold back rate change to be hydrophoby material, and the change that hydrophily material causes is minor.

结果表明，城市污水厂二级出水水中的溶解性有机物主要集中在kDa的分子量区间上，且疏水性有机物的含量比亲水性有机物的含量大；分子量区间分布不同的有机物对纳滤膜透水通量和截留率有着不同的影响，分子量2kDa以下的有机物引起纳滤膜透水通量衰减较大，有机物截留率较小，达57.2%；分子量10～100kDa的有机物引起纳滤膜透水通量衰减较平缓，有机物截留率却较大最高达73.8%；亲疏性不同的有机物对纳滤膜透水通量和截留率有着不同的影响，经对膜表面阻力的测定，证实引起膜透水通量和截留率变化的主要物质为疏水性物质，而亲水性物质引起的变化较小。

The results indicates, with the same level of other parameters, the TN removal can reach 80.0% and 70.9% with the control of dissolved oxygen under the levels of 0.3-0.6mg/l and 0.6-0.9mg/l, respectively; the TN removal upgrades from 80%, 83% to 84.1% with the decrease of sludge load in the system from 0.1, 0.07, to 0.05gCOD/gMLSS·d; the nitrogen removal only reaches 58% when C/N is 4, but can reach more than 80% when C/N is at or over 7, which indicates that the TN removal increases when higher C/N ratio; when HRT increases from 12h, 18h to 24h, the TN removal also increases from 78.6%, 82.0% to 83.0%; the TN removal average in the system increases from 75.6%, 78.5% to 83.0% with the increase of sludge age from 18d, 20d to 24d; the low oxygen conditions in the modified Orbal oxidation ditch model do not decrease the effect of COD removal, and the dissolved oxygen gradient with the distribution of 0-2-1mg/l in the system ensures the COD removal reaching the range of 80%-86%; and the phosphate removal, however, is not good enough, which varies from 40% to 50%, even lower than 35% in occasional situations, and the phosphate concentration in the outflow varies in the range of 1.28-2.38mg/l, which dissatisfies the discharge standard with the level of 1.0mg/l.

试验结果表明，在其它参数相同的情况下，将外沟道的溶解氧分别控制在0.3～0.6mg/l 和0.6～0.9mg/l 两个水平，外沟道中TN 去除率分别为80.0%和70.9%；系统中污泥负荷分别为0.1gCOD/gMLSS·d、0.07 gCOD/gMLSS·d、0.05 gCOD/gMLSS·d时，随着污泥负荷的降低，TN 的去除率却是上升的，分别为80%、83%、84.1%；本试验中，当C/N 为4时，仅能获得58%的脱氮率，当C/N 为7 或更高时脱氮率能达到80%以上，进水C/N 比值越高，总氮的去除率越高；在本试验中采取的水力停留分别为12h、18h、24h 时，外沟道中的总氮去除率随水力停留时间的增加而增加，分别为78.6%、82.0%和83.0%；当系统泥龄分别为18d、20d、24d 时，系统平均TN 去除率分别为75.6%、78.5%、83.0%，随着泥龄的增大TN 的去除率增加；改良型奥贝尔模型的低氧条件并没有降低COD 的去除效果，系统0-2-1mg/l的溶解氧梯度分布使得COD 去除率一般都在80%～86%之间；本试验中磷的去除效果不好，去除率基本在40%～50%之间，有的甚至低于35%，出水磷的浓度在1.28～2.38mg/l 之间，低于1.0mg/l 的出水排放标准。

The invention has steps:(1) In a biochemical reactor, carrying out biological processing to get mixed liquor;(2) Separating mud with water of the mixed liquor in sediment area of the biochemical reactor, discharging supernatant solution;(3) Supernatant solution is processed in a beach purification band planted with emerging plant, floating plant and/or submergent plant, adsorption granular material and enzyme-promoted packing are arranged on lakebed of the beach purification band, film aggregate is suspended in 0.4 m depth of the lakebed;(4) The purified effluent discharges into natural water body.

本发明步骤为：(1)在生化反应器内进行生物处理，得到混合液；(2)混合液在生化反应器沉淀区进行泥水分离后，出上清液；(3)上清液进入湖滨净化带处理，湖滨净化带植有挺水植物、浮水植物和/或沉水植物，湖滨净化带水底湖床铺垫吸附粒料与酶促填料，在湖床底0.4m水深悬置挂膜骨料；(4)净化处理后的出水排入自然水体。

It takes 9 days to have stable Fe removal with a filter chamber filled with sand and 2 days for the filter chamber of manganese mineral filtration. Forty-eight days are needed to have stable Mn reinoval with a filter chamber filled with sand, and 2 days for a filter chamber of manganese mineral filtration.

结果表明，在滤速为8.3m/h、进水pH值为6.8、溶解氧为1.7mg/L的条件下，河砂填料和锰砂填料滤柱对锰的去除效果分别需9d和2d即可稳定，出水铁浓度均在0.3mg/L以下；河砂填料和锰砂填料滤柱对锰的去除效果分别需要48d和16d方可稳定，出水锰浓度均在0.1mg/L以下。

On accourt of the cost of waste-water treatment and alkalinity after coagulating, the optimum dosage of each is found through experiment at first.

在考虑废水处理成本和混凝出水碱度的基础上，首先确定两种药剂的最佳用量，然后在该药剂量的前提下找出各自最宜的pH值，通过实验结果对比，选定处理效果好的PAC，该混凝剂使处理后出水COD_为349.7mg/L，COD_去除率达到66.7%，远高于该厂40%左右的去除率。

What those "experts" talk about should be the water purification machine. That kind of water filters adopt reverse osmosis system which was firstly applied in the aviation area to provide drinking water for astronauts. The merit they have is offering high-purity water (no other substance can pass except water molecule); the demerit is that the depurated water is so clear that is lack of microelements good to health.

但是事实并非如此，这些&专家&所说的是应该是纯水机，这种净水器采用的是反渗透系统，最早出现在航空事业中，是为了给航空员解决饮用水问题而研发的，它的优点是出水精度高（除了水分子，任何物质都过不去），缺点是净化后的水过于纯，缺少对人体有益的微量元素。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。