壓縮包內(nèi)含有CAD圖紙和說明書,均可直接下載獲得文件，所見所得，電腦查看更方便。Q 197216396 或 11970985
摘要
本設(shè)計(jì)為3000m3/d的造紙廢水的工程設(shè)計(jì)。根據(jù)該造紙廢水的水質(zhì)特點(diǎn)和水量，參考造紙廢水處理的經(jīng)驗(yàn)資料，采用較新的DAF氣浮法—UASB—生物接觸氧化工藝，并進(jìn)行經(jīng)濟(jì)、技術(shù)及環(huán)境效益的對(duì)比。
DAF氣浮法適合用于處理造紙紙漿，懸浮物去除率為90%以上，工藝流程和設(shè)備結(jié)構(gòu)比較簡(jiǎn)單；UASB有機(jī)容積負(fù)荷高，占地面積小，能耗低，可以回收沼氣，剩余污泥量少，污泥脫水容易，運(yùn)行管理簡(jiǎn)單；生物接觸氧化池具有較高的容積負(fù)荷，污泥產(chǎn)量較低，顆粒較大,易于沉淀，無需污泥回流，不存在污泥膨脹問題，也不產(chǎn)生濾池蠅。
本工程采用的DAF氣浮法—UASB—生物接觸氧化工藝，具有技術(shù)成熟、穩(wěn)定、節(jié)能、占地少且效率高等特點(diǎn)，建設(shè)投資成本為兩百五十多萬元，成本合理，平均噸水運(yùn)行費(fèi)為0.558元/噸，費(fèi)用低廉。采用該工藝處理造紙廢水后，能使出水水質(zhì)達(dá)到廣東省造紙廢水污染物排放標(biāo)準(zhǔn)的要求。
關(guān)鍵詞：造紙廢水，DAF氣浮法，UASB，接觸氧化法
Abstract
Present is the design of the treatment project of paper wastewater with the amount of 3000m3/d. Distinguishing feature on the basis of former experience and statistics ,and through the comparison on the economic,technologic and environmental benefit,chose Pressure Dissolved Air Flotation －UASB－biological contact oxidation technology.
Pressure Dissolved Air Flotation is suitable for dealing with paper pulp. The removal rate of suspended solids is above 90%. Technics process and equipment structures are relatively simple. UASB have a high organic volume load it occupies small area and has low energy consumption. Gas can be recovered
Also. UASB produce little residual sludge. The sludge dewatering is easy.The operation and management are simple.Biological contact oxidation has a higher volume load, low sludge production, large particles and precipitating easily. It doesn't need sludge returning, and there is no sludge bulking problem and does not produce filter flies.
Pressure Dissolved Air Flotation－UASB－biological contact oxidation technology is ripe, steady, less energy consumption,taking less area and high efficiency. The investment cost is about 2.5 million yuan,whith is reasonable. The average water running cost is 0.558 yuan / ton, whith is low. the discharged water can meet the emission limits of paper wastewater in Guangdong province.
Key words: Paper wastewater Pressure Dissolved Air Flotation UASB Contact oxidation method