[1]周呈,周宇翔,葉陽陽,等.南通某化工園區(qū)污水處理廠降本增效分階段改造[J].中國給水排水,2024,40(12):114-119.

　ZHOUCheng,ZHOUYu-xiang,YEYang-yang,et al.Phased Upgrading and Reconstruction of a Chemical Industry Park WWTP in Nantong to Reduce Cost and Increase Efficiency[J].China Water & Wastewater,2024,40(12):114-119.點擊復制

Author(s):ZHOU　Cheng， ZHOU　Yu-xiang， YE　Yang-yang， SUN　Hui-pin（Jiangsu Environmental Protection Group Nantong Co. Ltd.， Nantong 226001， China）

關鍵詞:化工園區(qū);  臭氧射流曝氣;  高密度澄清池;  污泥低溫干化;  提標改造

Keywords:chemical industry park;  ozone jet flow aeration;  high-density clarifier;  low temperature sludge drying;  upgrading and reconstruction

摘要:南通某化工園區(qū)污水處理廠進水水質復雜，主要處理園區(qū)內農藥、醫(yī)藥、精細化工等企業(yè)預處理后的廢水，而現有處理系統(tǒng)存在原始設計缺陷且設備老化嚴重，出水水質已無法滿足《城鎮(zhèn)污水處理廠污染物排放標準》（GB 18918—2002）的一級A排放標準，同時高昂的運行成本極大增加了企業(yè)負擔，因此決定進行分階段提標改造。通過增設物化預處理、優(yōu)化生化處理工段、新增末端深度處理工段的方式完成整改，最終形成臭氧氧化池+水解酸化池+A/O池+二沉池+芬頓氧化池+高密度澄清池+V型濾池的污水處理組合工藝，對物化污泥采用調理+板框壓濾+低溫干化組合工藝，改造完成后出水水質穩(wěn)定達到排放標準，綜合運行成本降低2.5元/m3。面對后期可能執(zhí)行的江蘇新地標，可通過改造現有V型濾池為反硝化生物濾池實現深度脫氮，并在整個工藝的最末段增設活性炭吸附罐作為保障措施實現對COD與殘留有機氮的去除。

Abstract:The influent quality of a wastewater treatment plant (WWTP) in a chemical industrial park in Nantong is complex, which mainly treats the pre-treated sewage of pesticides, pharmaceuticals, fine chemicals and other enterprises in the park. However, the existing treatment system had the original design defects and the equipment was seriously aged, thus the effluent was unable to meet the level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), while the high operating cost greatly increased the enterprise’s burden. Therefore, the WWTP adopted a phased upgrading and reconstruction, by adding physical and chemical pre-treatment, optimizing biochemical treatment section and adding terminal advanced treatment section. Finally, the combined treatment process of ozone oxidation tank, hydrolysis acidification tank, A/O tank, secondary sedimentation tank, Fenton oxidation tank, high-density clarifier, V-type filter was formed. The combined process of sludge conditioning, plate and frame pressure filtration and low temperature drying was adopted for physicochemical sludge treatment. After the completion of the transformation, the effluent quality met the standard requirements stably, and the comprehensive operation cost was reduced by 2.5 yuan/m3. In the face of the new standard of Jiangsu Province that may be implemented in the later period, the existing V-type filter could be transformed into a denitrification biofilter to achieve advanced nitrogen removal, and an activated carbon adsorption tank could be added at the end of the whole process as a safeguard measure to achieve the removal of COD and residual organic nitrogen.

相似文獻/References:

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[2]曾明,郭慶賀,徐貴達,等.化工園區(qū)綜合污水廠的工程改造及運行分析[J].中國給水排水,2022,38(18):101.

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[4]胡邦,楊艷坤,張鑫,等.化工園區(qū)工業(yè)污水“分類分質”處理工藝系統(tǒng)設計[J].中國給水排水,2023,39(6):66.

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更新日期/Last Update: 2024-06-17