SediMag®磁混凝技術(shù)在高效沉淀池改造中的工程應(yīng)用
霍槐槐
（青島洛克環(huán)保科技有限公司，青島 266071）
摘要 聊城市某污水處理廠設(shè)計(jì)規(guī)模3.5×104 m3/d，出水執(zhí)行一級(jí)A標(biāo)準(zhǔn)。為進(jìn)一步消減污染物排放量，該污水處理廠進(jìn)行提標(biāo)改造，執(zhí)行準(zhǔn)地表水IV類標(biāo)準(zhǔn)，其中SS限值為5mg/L,TP限值為0.3mg/L。本文介紹了磁混凝沉淀池提標(biāo)改造的主要設(shè)計(jì)參數(shù)，闡述了針對(duì)高效沉淀池的池體及設(shè)備改造措施。原深度處理段為“2組高效沉淀池+纖維轉(zhuǎn)盤濾池”組合工藝，提標(biāo)完成后由1組磁混凝沉淀池承擔(dān)3.5×104 m3/d規(guī)模全部深度處理功能，穩(wěn)定滿足新的出水要求。
關(guān)鍵詞 混凝凝沉淀池；高效沉淀池改造；污水廠提標(biāo)改造；地表水準(zhǔn)IV類；
Application of Upgrading High-efficiency Sedimentation Process to
SediMag® Magnetic Coagulation & Sedimentation Process
Huo, Huai huai
（Qingdao Low-carbon Environmental Technology Co.,Ltd, Qingdao 266071)
Abstract A 35,000 m3/d wastewater treatment plant in Liaocheng City, which effluent Level 1 Standard is implemented. In order to further reduce the emission of pollutants, the wastewater treatment plant has been upgraded and reconstructed with Class IV surface water standard, which the SS limit is 5 mg / L and the TP limit is 0.3 mg / L. This paper introduces the main design parameters of the magnetic coagulation sedimentation tank, and describes the improvement measures for the high-efficiency sedimentation tank body and equipment modification.The original deep treatment section is combined by 2 sets of high-efficiency sedimentation tank and fiber rotary disc filter. After the completion of the standard upgradation, the 1 group of magnetic coagulation sedimentation tanks will undertake all the deep-processing functions of 35,000 m3 / d, stably meeting the new water effluent requirements.
Keywords: magnetic sedimentation tank, high-efficiency sedimentation tank upgrading， wastewater treatment plant upgrading and construction, Class IV surface water standard
1 項(xiàng)目背景
聊城市某污水處理廠位于山東省聊城市，一期規(guī)模3.5×104 m3/d，已于2016年完成建設(shè)投產(chǎn)運(yùn)行。項(xiàng)目采用“預(yù)處理+AAO+二沉池+絮凝沉淀+纖維轉(zhuǎn)盤濾池+接出消毒”處理工藝，絮凝沉淀工藝段采用2組高效沉淀池，出水執(zhí)行《城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)》（GB18918-2002）中的一級(jí)A標(biāo)準(zhǔn)。
項(xiàng)目自2016年投產(chǎn)運(yùn)行以來(lái)，處理效果穩(wěn)定達(dá)標(biāo)。為進(jìn)一步消減污染物排放量，該污水處理廠于2018年進(jìn)行提標(biāo)改造，出水水質(zhì)執(zhí)行《地表水環(huán)境質(zhì)量標(biāo)準(zhǔn)》（GB3838-2002）中IV類標(biāo)準(zhǔn)。其中SS和TP在深度處理工藝段的設(shè)計(jì)進(jìn)出水水質(zhì)如表1所示，需對(duì)深度處理工藝段進(jìn)行提標(biāo)改造。
