A. 水处理工艺简介（英文）
Biological Wastewater Treatment
This is a brief summary of the various techniques that have been developed to treat
wastewater by biological means. They accomplish what is generally called secondary treatment.
Purpose:
The idea behind all biological methods of wastewater treatment is to introce contact
with bacteria (cells), which feed on the organic materials in the wastewater, thereby
recing its BOD content. In other words, the purpose of biological treatment is BOD
rection.
Typically, wastewater enters the treatment plant with a BOD higher than 200 mg/L, but primary settling has already reced it to about 150 mg/L by the time it enters the
biological component of the system. It needs to exit with a BOD content no higher than about 20-30 mg/L, so that after dilution in the nearby receiving water body (river, lake), the BOD is less than 2-3 mg/L. Thus, the biological treatment needs to accomplish a 6-fold decrease in BOD.
Principle:
Simple bacteria (cells) eat the organic material present in the wastewater. Through their metabolism, the organic material is transformed into cellular mass, which is no longer in solution but can be precipitated at the bottom of a settling tank or retained as slime on solid surfaces or vegetation in the system. The water exiting the system is then much clearer than it entered it.
A key factor is the operation of any biological system is an adequate supply of oxygen.
Indeed, cells need not only organic material as food but also oxygen to breathe, just like humans. Without an adequate supply of oxygen, the biological degradation of the waste is slowed down, thereby requiring a longer residency time of the water in the system. For a given flowrate of water to be treated, this translates into a system with a larger volume and thus taking more space.
Advantages:
Like all biological systems, operation takes place at ambient temperature. There is no
need to heat or cool the water, which saves on energy consumption. Because wastewater treatment operations take much space, they are located outdoor, and this implies that the system must be able to operate at seasonally varying temperatures. Cells come in a mix of many types, and accommodation to a temperature change is simply accomplished by self adaptation of the cell population.
Similarly, a change in composition of the organic material (e to people’s changing
activities) leads to a spontaneous change in cell population, with the types best suited to digest the new material growing in larger numbers than other cell types.
Types of equipment for biological treatment:
There are two broad types of biological wastewater treatment: those that include
mechanical means to create contact between wastewater, cells and oxygen, and those than don’t.
a) With mechanical means:
1. Activated sludge: This is the most common type. It consists in a set of two basins. In the first, air is pumped through perforated pipes at the bottom of the basin, air rises through the water in the form of many small bubbles. These bubbles accomplish two things: they provide oxygen form the air to the water and create highly turbulent conditions that favor intimate contact between cells, the organic material in the water and oxygen. The second basin is a settling tank, where water flow is made to be very quiet so that the cellular material may be removed by gravitational settling. Some of the cell material collected at the bottom is captured and fed back into the first basin to seed the process. The rest is treated anaerobically (= without oxygen) until it is transformed into a compost-type material (like soil).
The cost of an activated-sludge system is chiefly e to the energy required to pump air at high pressure at the bottom of the aerator tank (to overcome the hydrostatic pressure of the water). Another disadvantage is that the operation is accomplished in two separate basins, thereby occupying a substantial amount of real estate.
2. Trickling filter: A trickling filter consists in a bed of fist-size rocks over which the
wastewater is gently sprayed by a rotating arm. Slime (fungi, algae) develops on the rock surface, growing by intercepting organic material from the water as it trickles down. Since the water layer passing over the rocks makes thin sheets, there is good contact with air and cells are effectively oxygenated. Worms and insects living in this “” also contribute to removal of organic material from the water. The slime periodically slides off the rocks and is collected at the bottom of the system, where it is removed. Water needs to be trickled several times over the rocks before it is sufficiently cleaned. Multiple spraying also provides a way to keep the biological slimes from drying out in hours of low-flow conditions (ex. at night). Plastic nets are graally replacing rocks in newer versions of this system, providing more surface area per volume, thereby recing the size of the equipment.
3. Biological contactor: This is essentially a variation on the trickling filter, with the
difference being that solid material on which slime grows is brought to the water rather than water being brought to it. Rotating disks alternate exposure between air and water.
b) Without mechanical means:
The wastewater is made to flow by gravity through a specially constructed wetland.
There, the water is brought into close contact with vegetation (ex. reeds), which acts as a biological filter to the water. The organic material in the wastewater is used as nutrient by the plants. Oxygen supply is passively accomplished by surface aeration (contact with oxygen of the atmosphere). Since water flow is slow in such system, to give ample time for the biological activity to take place, there is almost no turbulence in the water and reaeration is weak. Compared to mechanical systems, constructed wetlands occupy far more real estate, but they may be aesthetically pleasing, especially if they are well integrated in the local landscape. They emit no odor, but people should stay away because of the danger posed by pathogens. Constructed wetlands have also the least energy requirement. Energy is only needed to pump the wastewater to the entrance of the system, from where gravity and biology do the rest. A major disadvantage, however, is the highly reced performance ring winter, especially in regions where ground freezes ring some of the winter months.
B. 三级废水处理过程英文怎么写
三级废水处理过程
[词典] tertiary wastewater treating process
C. 求关于cass污水处理工艺的英文资料
This book with emphasis introced and the hospital sewage treatment related practical technology, like hydrolisis acidification, CASS, ABF, A/O, A2/O, the AB law, the oxidation ditch and so on, and elaborated at present commonly used moreover the economical effective disinfection method, like the end proct sodium hypochlorite disinfection fluid, the chemical process chlorine dioxide disinfection and so on, in addition, this book also collected reorganized the massive hospital sewage treatment typical project example.
This book in compilation process, prominent usability and pointed, introced the above method characteristic, the situation and the application method with emphasis.
D. 英文资料：国外污水处理最新进展
偶有，发到你信箱了哦，记得给分啊
E. 污水处理厂一般流程用英语表述
污水处理厂一抄般流程
The general proceres for the waste water treatments.
污水袭经过格栅进入初沉池，再进入生物反应池，在进入二沉池，
The waste water is allowed to go through the filtering grids to the preliminary sedimentation pool, and then to the biological reaction pool, and again into the secondary sedimentation pool.
F. 废水处理的方法英文
废水处理的方法英文可以是Methods of wastewater treatment
G. 关于污水处理过程的英语作文
Title: Process in Recycle of Used Water.
A huge amount of used water are proced in our daily life. Treatment of used water not only prevents environmental pollution also saves water resource. Recyle of used water is usually involved in the following process. First, used water is introced into a sewage plant where the water are left steady for certain time. Precipitates are separated and used for fertilizers. The remaining water can be regarded as ordinary water which either is discharged into river or introced into a purification plant for fresh water.
Therefore, we must save water in our daily life!
H. 处理流程的英文，处理流程的翻译，怎么用英语翻译处理
翻译如下
处理流程
treatment flowsheet或process flow
例句；
详细阐述了数据采集系统的功能组成及基本回处答理流程。
The function and basic process flow of data acquisition system aredescribed.
I. 关于污水处理的原版英文 带翻译的 急需
DSTE型生活污水处理设备
使
用
说
明
书
一、 用途与适用范围
本设备主要适用于处理一般生活污水或与之相类似的工业有机污水。如：饭店、疗养院、学校、住宅区、工矿企业等生活有机污水处理。
二、 处理工艺
SWZ系列污水设备处理工艺，其主要处理工艺是采用目前较为成熟的生物膜法污水处理设备，对处理氨氮指标较为成熟。水质设计参数按一般生活污水水质设计计算，按进水平均BOD5:≤250mg/L,出水BOD5:≤20mg/L,进水平均CODcr:≤400mg/L,出水CODcr:≤100mg/L,进水平均NH3-N:≤40mg/L ，出水NH3-N:≤15mg/L ，进水平均SS:≤300mg/L, 出水SS:≤70mg/L，进水平均动植物油≤40mg/L，出水动植物油≤10mg/L，主要工艺路线如下：
厨房污水
污水入流
垃 事 达
圾 故 标
清 旁 回流 排
运 通 放
上 清 液
设备沉淀池为竖流式沉淀池，沉淀上升流速为0.4—0.8毫米/秒，接触氧化填料采用立体弹性填料，填料比表面积300m2/m3,供氧量按BOD5，NH3-N精确计算，曝气时间6—8小时。
缺氧池停留时间2—3小时，缺氧后的污水经接触氧化后，混合液回流缺氧池，回流比例根据调试确定（回流比100—200%）沉淀池停留时间1.5—2小时以上，沉淀池污泥气提至污泥池好氧消化，上清液回流调节池重新处理，污泥贮存污泥池由环卫部门定期清理。
三、 接管外形图及设备安装
1、本设备具有三种安装形式：一是安装在地表以下；二是一
半埋在地坪以下，一半在地坪上；三是全安装在地坪以上。基础必须水平，如设备安装在地坪以下，基础离地坪相对高度按图尺寸为准，同时四周挖掘宽度，长度必须离基础边线500mm以上，以便管道安装。
2、管道安装连接应该在设备就位时考虑好，设备就位时必须
按说明书设备自重，配合吊车吨位大小，安装顺序按现场对照图就位、管道连接附管道安装图一份，设备就位后连接管道用橡皮垫及螺丝紧固好，使连接处不渗漏。
3、根据安装图，设备的位置，方向不能放错，互相间距必须
正确。
4、安装完毕后设备与基础地板必须连接固定，绝对保证不使
设备流动上浮，全部安装完毕必须把设备存满水。试验各管路口必须不渗漏，同时设备不受地面水上涨，而使设备错位和倾斜。
5、设备安装完毕无不妥后，即可用土填入设备四周的间隙中
并整平，地面填土时应注意：⑴设备人孔盖板必须高出地坪100mm左右；⑵不能让土堵塞人孔盖板上的进气口。
6、把电控柜控制线与设备接通，接线时注意风机及潜污泵电
机的转向。控制柜不能放在露天，须防日晒，雨淋等。以免控制板及接线头漏电，烧毁控制板。
7、注意事项：⑴设备安装之处必须保证下雨不积水，⑵设备
的出水管必须在相对地坪0.4m以下，⑶设备上方不得压有重物，不得有大型车辆经过（指无特殊设计的），⑷设备一般不得抽空内部污水，以防止地下水把设备浮起。
四、 设备使用前检查及设备启动
1、启动设备前检查好电路，接线控制柜线路是否正确，电压
及电流是否符合要求。该设备控制柜为现场控制柜。本控制柜可同时控制若干台潜污泵、风机，并结合工作情况实时监测，具有自动保护报警功能，还配有手动，自动控制系统，启动水泵时检查水泵管路是否有渗漏及吸水，有无堵塞。
2、本设备水泵采用抗堵塞撕裂型潜污泵，其中二台水泵的控
制由微机通过检测污水池中的液位来完成，当液位由低到高到达工作水位时，启动工作泵，如液位继续上升到警戒水位时，再启动备用泵，即二台同时工作，当液位下降到工作水位时关掉工作泵，（液位通过液位开关来检测），启动风机时检查旋转方向是否正确，切忌反转。
3、当调节池污水较少，液面低于水泵启动液位时，二台水泵
都停止工作。这时，为使生物膜正常生长，风机间歇启动，启动时间在30分钟内任选、间歇启动周期为2小时内任选。
4、沉淀池排泥控制采用电磁阀气提排泥，排泥周期为2小时/次，排泥时间5—8分钟/次。
5、设备控制中心在微机柜上按照设计编排工作程序一次完
成（无特殊情况下不得采用手动控制方式），手动控制通过面板上按键开关，由人工控制潜污泵、风机、电磁阀及二氧化氯发生器等设备的开启和关闭。
五、 生物膜的培养
1、污水按额定流量不断进入设备内。
2、启动潜污泵、风机、电磁阀及二氧化氯发生器，风机的充
氧量减至正常充氧量的一半左右。
3、每天观察好氧池内填料情况，如填料上长出橙黄色或橙黑
色的一层粘状物，即已培养好生物膜，这个过程一般要7—15天完成。
4、气温一般在摄氏15℃—25℃最为适宜。
5、如原污水浓度太低，培养生物膜时间太长，必要时要加一
点营养，主要以粪便为主或其它。
6、PH值一定要保证6~9之间，原污水要保证达到可生化状
态。
7、开始调试时，生活污水少量进入生活污水处理系统，待生
物膜培养好后，生活污水可按正常流量不断进入生活污水处理系统，即调试正常开始。
六、 设备运行管理
1、将风机调至正常状态；
2、好氧池混合液回流比调至最佳状态；
3、按设计运行程序工作，经常观察生物膜的生长情况。
七、 维护保养及故障排除
1、必须注意污水中不得有大块固体物质进入设备，以免堵塞
管道与孔口和水泵损坏；
2、设备人孔必须盖好，以防发生意外或掉入大块固体物质；
3、进入设备的污水PH值必须在6~9之间，偏酸偏碱会影响
生物膜的正常生长；
4、风机一般运行6个月左右需要换机油一次，以提高风机使
用寿命；
5、必须保证风机进气口畅通。
6、故障排除
故 障 原 因 排 除
污水流动不畅 管路或孔口有杂物堵住 用压力水或压缩空气冲刷
曝气量不足 进气口有异物堵塞 清理异物
混合液回流不畅 管道内有异物或阀门堵死 旋开阀门，用压力水冲洗
污泥提升不畅 管道内有异物或阀门堵死 旋开阀门，用压力水冲洗
DSTE TYPE DOMESTIC SEWAGE TREATMENT EQUIPMENT
OPERATION INSTRUCTIONS
Operation instructions to the DSTE
I Use and scope
This set is mainly used to treat the domestic sewage or some kind of instrial waste water, such as the waste water from the restaurant , sanatorium, or school, etc.
II. Treatment Technology
This DSTE set is mainly adopt the method of the Biomembrane method to deal with the waste water, it is a quite mature method to remove the NH4-N content in the water nowadays, the parameter of the water quality is designed according to the waste quantity containing in the raw water:
Waste intake average parameter
BOD5≤250mg/l
CODcr≤400mg/l
NH3-N≤40mg/l
SS≤300mg/l
Grease≤40mg/l
Effluent average parameter
BOD5≤20mg/l
CODcr≤100mg/l
NH3-N≤15mg/l
SS≤70mg/l
Grease≤10mg/l
The main treatment technology flow is as follow:
Kitchen sewage Oil interceptor
Intake of the sewage Bar rack Retention pool Anaerobic tank
sludge recycle
Contact oxidation tank Sediment tank disinfection tank
To disposal sludge tank
The sediment tank is erect style tank, the up-flow velocity is 0.4---0.8mm/s, contact oxidation material is stereoscopic and elastic, the specific surface area of it is 300m2/m3, the O2 supply is designed according to the BOD5 and NH3-N content in the water, and the aeration period will be 6～8 hours.
The time for waste water stay in the anaerobic tank is 2-3 hours, after contact oxidation, the waste water and sludge backflow to the anaerobic， backwater ratio is (100--200%) according to the adjustment. The time the waste water be kept in the sediment tank should more than 1.5～2 hours, sludge in the sediment tank will be exalted to the sludge tank by air waiting for the contact oxidation, then the overflow will backflow to the retention basin retreated, the sludge in the tank would be cleaned periodically.
III Installation
1.Three forms of installation: ⑴underground installation; ⑵half underground installation;⑶on the ground installation. The basement must be flat, if the set is installed underground, the height between the basement and the surface of the ground should adopt the drawing, and make the excavation width exceed 500mm out of the foundation plate , which is better for pipe installation.
2. Everything about pipe installation and connection should be taken into consideration when the set is ready. Make sure the net weight is suit with the crane, and the installation sequence should adopt the designed drawing, tight the screws with the rubber washer so as to connect the pipes, make sure there isn’t any leaking in the conit joint.
3. The install direction and position should be correct, so do the interval between them.
4. Fix the set with the surface of the ground after the installation has been finished, make sure it is firmly fixed, and the set wouldn’t move in the future. Pour in water after finish installation to the full. Make sure there isn’t any leaking on the conit joint, and make sure the set wouldn’t in version or inclined because of rise of the water under the ground.
5. After correct installation, pour some soil into the interval and make it flat, make sure:
⑴ The cover of the manhole should higher than the surface for about 100mm;
⑵ The air intake pipe on the manhole wouldn’t be blocked by the soil.
6. Connect the electrical control wire with the set, pay attention to the running direction of the blower and the submersible sewage pump. The electrical control cabinet couldn’t be kept outdoor, because the sun or rain would destroy the control board.
7. Points of attention:
⑴ The place to install the set could not store up the water when it is raining, ⑵ The water outlet pipes should be 0.4m under the surface of the ground.
⑶ Make sure that there wouldn’t any heavy things on top of it, and no tracks would get through it.
⑷ There should always some waste water in the set to prevent the floatage of the set by the underground water.
IV Examine the set and start before use
Make sure the electrical wires, control panel wires and the voltage are all accord with requirement. The local control cabinet could not only be used to control submersible sewage pumps and the blowers at the same time, but also could monitor itself according to the working condition. It also have the ability to self protect and self alarm, beside that, manual switch and automatic exchange switch are also equipped. To examine the pipes of the pump before start to see whether it is seeping or bibulous or stifled.
The pump of this set is antiblock avusion type pump, the control of two pumps is through the liquid switch in the waste water basin, working pump start to work when the height raised to the start level; the spare pump start when the height raised to the highest level; pump stop working when the height fall to the low level. Check out whether the revolving direction of the blower is correct when it is started.
When the liquid level is lower than the pump starting height, both two pumps stop working. At this time, the blower start to work intermittently, working time should between 0～30 minutes, and the period of the intermittent start should between 0～2 hours.
The control of the sludge discharge in the sediment tank is air boost discharge by the electromagnetic valve, discharging cycle: 2hours/time, discharging time: 5～8minutes/time.
The control of the set should be finished according to the computer designed working procere one time, (only under some special conditions the hand –driven control could be used). If it is necessary, the manual control of the submersible sewage pumps and the blowers and the electromagnetic valve can be realized through turning the switch on or off by hand.
V. The cultivation of the biomembrane
1. The quantity of sewage which entering in the set should accord with the rated flux with no stop.
2. The oxygen volume from the blower should reced to half amount when starting the submersible sewage pump, blower, electromagnetic valve and the CLO2 generator。
3. Observe the material filled in the contact oxidation tank, the biomembrane has finished when a piece of yellow or black dope could be found on the surface. The process costs 7～15 days.
4. The best temperature should be: 15～25℃
5. If the density of the original sewage is to low, it would cost more time to cultivate the biomembrane, so when it is necessary, some kind of furtilizer should be added.
6. The pH value should be kept between 6 and 9, so that the original sewage could reach the step of contact oxidation.
7. When start, pour in small quantity of sewage into the sewage treatment system. After the bilmembrane is finished, Sewage could enter in the system in normal flux.
VI. The management of the operation
1. Turn the blower to the normal position.
2. Let the backflow ratio of the contact oxidation tank reach the best position.
3. Working as designed, often observe the cultivative situation of the biomembrane.
VII. Maintenance and fix the breakdown
1. Make sure that there wouldn’t any solid material content in the sewage, to prevent the block of the pipes.
2. Cover the manhole of the set so as to prevent the droping of some solid material.
3. The pH value should be kept between 6 and 9, in order to keep a better condition for cultivation.
4. Change the lubricating oil in the blower one time every six months.
5. Keep the entrance of the blower unblocked.
6. Fix the breakdown
fault reason method
No enough water flow Sth. block in the pipe Clean by pressure water or air
No enough aeration volume Sth. block in the entrance of the blower Clean it
No enough refluence of the mix liquid Sth. block in the pipe or entrance of valve Unscrew the valve, clean it by pressure water
No enough refluence of the sludge Sth. block in the pipe
or entrance of valve Unscrew the valve, clean it by pressure water
J. 请翻译成英文 关于污水处理的
this is a split flow system project， water，rain water and sewage go into each pipe line respectively，
sanitary sewage；toilet sewage goes into community underground sewage pipeline after disposed in septic tank，kitchen waste water after separated in separation tank goes into underground sewage pipeline，
rain water；according to regulations，collect it into pool then discharge them into neighborhood rainwater pipeline，
instrial waste water；this equipment proces waste water by coating spraying process，sewage quantity about 128m3/d,the proction waste water first goes into sewage plant to be disposed by standard procere，then discharge into sewage pipeline，
the material and layout of drainage pipe ；pe double layer corrugated pipe is adopted for outside pipelines，and UPVC for inside pipeline，