ZHENG Feng,MU Yang,SUN Xun.MBR Process Used in Expansion Project of a Sewage Treatment Plant in Shandong Province[J].China Water & Wastewater,2020,36(18):81-84.
MBR工藝用于山東省某污水處理廠擴(kuò)建工程
- Title:
- MBR Process Used in Expansion Project of a Sewage Treatment Plant in Shandong Province
- 關(guān)鍵詞:
- 污水處理廠; 升級(jí)擴(kuò)建; AAO工藝; MBR工藝
摘要:- 山東某污水處理廠現(xiàn)有設(shè)計(jì)規(guī)模為20×104 m3/d，采用氧化溝形式的AAO+纖維束過濾工藝，出水達(dá)到一級(jí)A排放標(biāo)準(zhǔn)。擴(kuò)建工程規(guī)模為10×104 m3/d，占地面積4 hm2，設(shè)計(jì)出水COD≤45 mg/L、NH3-N≤2(3.5) mg/L、TP≤0.4 mg/L，其余指標(biāo)需達(dá)到一級(jí)A標(biāo)準(zhǔn)。基于擴(kuò)建工程占地面積小、出水標(biāo)準(zhǔn)高，設(shè)計(jì)采用預(yù)處理+AAO+MBR+紫外線消毒工藝，輔以化學(xué)除磷、投加碳源等措施，且廠區(qū)采用整體式布置，以節(jié)省占地。工程建成后，運(yùn)行效果穩(wěn)定，出水BOD5、COD、NH3-N、SS、TN、TP平均值分別為2.2、11.7、0.3、4.1、9.6、0.12 mg/L，均優(yōu)于設(shè)計(jì)標(biāo)準(zhǔn)。
Abstract:- The existing design scale of a sewage treatment plant in Shandong is 20×104 m3/d, using AAO in the form of oxidation ditch + fiber bundle filtration process. The effluent reached the first class A level criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB 18918-2002）. The scale of the expansion project is 10×104 m3/d, covering an area of 4 hm2. The designed effluent COD≤45 mg/L, NH3-N≤2(3.5) mg/L, TP≤0.4 mg/L, and the other indicators should reach the first class A level of GB 18918 -2002. Based on the small footprint of the expansion project and high water discharge standards, the design adopted pretreatment+AAO+MBR+ultraviolet disinfection process, and supplemented by measures such as chemical phosphorus removal and carbon source addition. And the plant area adopted an overall layout to save land. After the project was completed, the operation effect was stable. The average values of BOD5, COD, NH3-N, SS, TN and TP of effluent water were 2.2 mg/L, 11.7 mg/L, 0.3 mg/L, 4.1 mg/L, 9.6 mg/L and 0.12 mg/L, respectively. All were better than design standards.
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