外文翻譯---de型氧化溝生物脫氮除磷工藝

1、<p><b>　　外文資料</b></p><p>　　DE-oxidation ditch biological nitrogen</p><p>　　and phosphorus removal process</p><p>　　1、DE-oxidation ditch biological nitrogen removal

2、process</p><p>　　Nitrogen is a plant growth essential nutrients, but if the chlorine content in water too high, it will produce eutrophication so that the dissolved oxygen content to reduce, the proliferatio

3、n of algae growth, accelerate the aging process of natural water bodies. In addition to the nitrate form of chlorine is considered a cause of infant leukemia temporary high-speed railway on January 1 of the root causes o

4、f hemoglobin. Therefore, drinking water sources will Liuren the oxidation ditch water is n</p><p>　　Oxidation Ditch biological nitrogen removal is the first by the self-support of aerobic microbes in the aer

5、obic state, the use of dissolved oxygen in the mixture through nitrification will be for the effect of nitrate oxide, and then from heterotrophic microorganisms in the state in the anti-anoxia The role of nitrifying bact

6、eria, the use of nitrates in the role nitrification oxygen to produce anti-nitrate nitrogen into the release of chlorine out.</p><p>　　Nitrification-as：</p><p>　　Denitrification-as：</p>&

7、lt;p>　　DE-oxidation ditch the dechlorination role through a special operation mode, in turn create two Gounei nitrification and nitrification conditions. Nitrogen and purpose of reach. Operation to the following four

8、stages of operation (Figure 1).</p><p>　　Stage A: Well distribution of the sewage ditch into the Ditch I, interim ditch running low brush, only to maintain the activated sludge mixture of suspended state; di

9、ssolved oxygen concentration of less than 0.5 mg/l, in a state of hypoxia, so that the former An aerobic phase of the nitrate to raw sewage as carbon source for denitrification.At this point, I ditch behind the overflow

10、weir open, muddy mixture into this two-person pool for precipitation separation, and in the ditch II to the high-s</p><p>　　Phase B: the distribution of sewage are still people well into the groove I,DitchI,

11、 II maintained ditch on the stage of the anti-nitrification, nitrification state. But the water from the ditch I read the Amoy II, guarantee people into the ditch II of the sewage pollution in the organic material is ful

12、ly degradable. The stage for the run-time 105 min.</p><p>　　Stage C: Well into the distribution of the sewage ditch II. At this point ditch II interim low brush then pushed into the flow of denitrifying stat

13、e. To the water. I ditch and high-speed transit brush aeration, nitrification. The stage for the running time 15 min.</p><p>　　Stage D: D stage of the operation and status similar to stage B, only Ditch I, i

14、I into the ditch, the water situation in the opposite. The stage of the running time for 105 min</p><p>　　Process in the course of the operation. Well distribution, Brush, overflow weir by the pre-set time c

15、ontrol operation. In addition, Brush also be installed in each groove of dissolved oxygen analyzer control.</p><p>　　Figure 1 Biological nitrogen removal opertation mode</p><p>　　2、DE-oxidati

16、on ditch biological phosphorus removal process</p><p>　　Phosphorus is essential microbial metabolism of nutrients, microbial cells is composed of part, by ADP and adenosine triphosphate (ATP) of each other t

17、o provide energy to achieve conversion of synthesis.</p><p>　　Rely mainly on the removal of phosphorus-phosphate of energy exchange in the process of absorbing phosphorus, and polymerization in the form of p

18、hosphorus in the body. Anaerobic state,These bacteria will be in polymerization of phosphorus to PO43--P in the form of a release in aerobic or oxygen sha state, the P-Han and respiration through the absorption of sewage

19、 in the PO43--P, a polymerization of phosphorus in the form of Synthesis of the cell.</p><p>　　DE-oxidation ditch the biological phosphorus removal is the basis of this mechanism, set up in the oxidation dit

20、ch before anaerobic pond, Thus forming anaerobic January 1 January 1 hypoxia aerobic processes (Figure 2), and created a conducive to the best of phosphorus operating conditions.</p><p>　　The system of anaer

21、obic pond by the three ditches group. HRT for lh. Diving pool installed blender, sewage sludge and returning well-mixed.- P because of the need to completely anaerobic conditions can be fully in the polymerization of pho

22、sphorus released, if the pool NO3-,containing excessive, it will affect the efficiency of phosphorus, in the first Gounei contain NO3-，the Return to the use of sewage sludge as carbon source for a more through response t

23、o the denitrification to ensure that phos</p><p>　　Figure 2 Bilogical phosphours remonal process</p><p><b>　　中文譯文</b></p><p>　　DE型氧化溝生物脫氮除磷工藝</p><p>　　1、

24、DE型氧化溝生物脫氮工藝 </p><p>　　氮是植物生長的一種必不可少的營養(yǎng)成分，但是如果水體中氮的含量過高，就會產(chǎn)生富營養(yǎng)化，使溶解氧含量降低，藻類生長泛濫，加速水體天然老化過程。另外，以硝酸鹽形式存在的氮被認(rèn)為是引起嬰幼兒的一種暫時性白血病—高鐵血紅蛋白癥的根源。因此，對于將流入飲用水的水源很有必要脫氮。</p><p>　　氧化溝生物脫氮是首先由自養(yǎng)型好氧微生物在好氧狀態(tài)下，利用

25、混合液中的溶解氧通過硝化反應(yīng)將氨氮氧化為硝酸鹽，再由異養(yǎng)微生物在缺氧狀態(tài)下在反硝化細(xì)菌的作用下，利用硝酸鹽中的氧產(chǎn)生反硝化作用將硝酸鹽中的氮轉(zhuǎn)化為氮?dú)忉尫懦鋈ァ?</p><p><b>　　硝化反應(yīng)式為： </b></p><p><b>　　反硝化反應(yīng)式為： </b></p><p>　　DE型氧化溝的脫氮作用是通過特

26、殊的運(yùn)行方式，在兩條溝內(nèi)交替創(chuàng)造硝化和反硝化反應(yīng)的條件。而達(dá)到脫氮目的。運(yùn)行方式按以下四個階段運(yùn)行</p><p><b>　　(如圖1 )。</b></p><p>　　階段A ：污水經(jīng)分配井進(jìn)人溝I，溝中轉(zhuǎn)刷低速運(yùn)行，僅保持活性污泥混合液的懸浮狀態(tài)，溶解氧濃度低于0.5mg/l,處于缺氧狀態(tài),從而使得經(jīng)前一好氧階段產(chǎn)生的硝酸鹽以原污水為碳源進(jìn)行反硝化反應(yīng)。此時，溝

27、I后端的溢流堰打開，泥水混合液由此進(jìn)人二沉池進(jìn)行沉淀分離，而溝II中的轉(zhuǎn)刷進(jìn)行高速曝氣，將前一階段進(jìn)人該溝的污水在好氧狀態(tài)下(D0>2 mg/l)進(jìn)行硝化反應(yīng)。該階段的運(yùn)行時間為 15min。</p><p>　　階段B：污水仍經(jīng)分配井進(jìn)人溝I，溝I、溝II均保持上階段的反硝化、硝化狀態(tài)。但水由溝I改為溝II，保證進(jìn)人溝II的污水中有機(jī)污染物質(zhì)得到充分降解。該階段運(yùn)行時間105min。</p>

28、<p>　　階段C：污水經(jīng)分配井進(jìn)入溝II。此時溝II中轉(zhuǎn)刷低速推流進(jìn)入反硝化狀態(tài),進(jìn)行出水。而溝I中轉(zhuǎn)刷高速曝氣，進(jìn)行硝化反應(yīng)。該階段運(yùn)行時間為 15min。 </p><p>　　階段D：階段 D的運(yùn)行狀態(tài)與階段 B相似，只是溝I、溝II進(jìn)、出水情況相反。該階段的運(yùn)行時間為105min。 </p><p>　　上述工藝運(yùn)行過程中。分配井、轉(zhuǎn)刷、溢流堰由預(yù)先設(shè)定的時間控制運(yùn)行

29、。另外，轉(zhuǎn)刷還受安裝在每條溝的溶解氧測定儀控制。</p><p>　　圖1 生物脫氮運(yùn)行方式</p><p>　　2、DE型氧化溝生物除磷過程 </p><p>　　磷是微生物新陳代謝所必需的營養(yǎng)元素，既是微生物體細(xì)胞組成的一部分，又通過二磷酸腺苷(ADP)和三磷酸腺苷(ATP)的相互轉(zhuǎn)換提供能量來實(shí)現(xiàn)細(xì)胞合成。</p><p>　　磷的去

30、除主要依靠聚磷菌在能量交換過程中吸收磷，并以聚合磷的形式存在于體內(nèi)。在厭氧狀態(tài)下，這些細(xì)菌將體內(nèi)聚合磷以PO43-—P的形式釋放出來；在好氧或缺氧狀態(tài)下，聚磷菌又通過呼吸作用吸收污水中的PO43-—P，以聚合磷的形式存在于體中進(jìn)行細(xì)胞合成。 </p><p>　　DE型氧化溝的生物除磷就是根據(jù)這個機(jī)理，在氧化溝前設(shè)置厭氧進(jìn)水池，從而形成厭氧—缺氧—好氧的工藝流程( 如圖2 ) ，創(chuàng)造了有利于生物除磷的最佳運(yùn)行條

31、件。</p><p>　　該系統(tǒng)中厭氧池由三個溝渠組成，水力停留時間為lh。池中安裝潛水?dāng)嚢杵?，使污水與回流污泥充分混合。因?yàn)榫哿拙仨氃谕耆珔捬醯臈l件下才能夠?qū)Ⅲw內(nèi)的聚合磷充分釋放出來，如果池中 NO3-的含量過大，會影響除磷的效率，所以在第一條溝內(nèi)含有NO3-的回流污泥利用污水作碳源進(jìn)行較徹底的脫硝反應(yīng)，從而保證磷在第二、三條溝內(nèi)得以充分釋放。污水經(jīng)分配井進(jìn)人氧化溝后，在缺氧和好氧的狀態(tài)下( 好氧狀態(tài)下吸收效