[1]張曉霞,熊仁久,周家中,等.浙江某工業(yè)廢水處理廠升級改造運行效果解析[J].中國給水排水,2021,37(5):37-42.
ZHANG Xiao-xia,XIONG Ren-jiu,ZHOU Jia-zhong,et al.Analysis on Upgrading and Retrofitting Effect of an Industrial Wastewater Treatment Plant in Zhejiang[J].China Water & Wastewater,2021,37(5):37-42.
點擊復(fù)制
ZHANG Xiao-xia,XIONG Ren-jiu,ZHOU Jia-zhong,et al.Analysis on Upgrading and Retrofitting Effect of an Industrial Wastewater Treatment Plant in Zhejiang[J].China Water & Wastewater,2021,37(5):37-42.
浙江某工業(yè)廢水處理廠升級改造運行效果解析
中國給水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期數(shù): 2021年第5期 頁碼: 37-42 欄目: 出版日期: 2021-03-01
- Title:
- Analysis on Upgrading and Retrofitting Effect of an Industrial Wastewater Treatment Plant in Zhejiang
- 關(guān)鍵詞:
- 工業(yè)廢水處理廠; 升級改造; MBBR工藝; 同步硝化反硝化; 懸浮載體
- Keywords:
- industrial wastewater treatment plant; upgrading and retrofitting; moving bed biofilm reactor; simultaneous nitrification
and denitrification; suspended carrier
摘要:- 浙江某工業(yè)廢水處理廠升級改造，采用AAO—MBBR復(fù)合生物膜工藝，在未新增建設(shè)用地和擴建池容的基礎(chǔ)上，日處理量由3×104 m3/d提高至6×104 m3/d。改造后實際運行出水COD、TP、NH3-N和TN濃度分別為（37.7±6.61）、（0.09±0.03）、（0.25±0.14）和（5.87±1.54） mg/L，出水水質(zhì)穩(wěn)定達到一級A標準。實際監(jiān)測表明，在好氧MBBR區(qū)存在TN去除現(xiàn)象，約占TN總?cè)コ康?0.36%。系統(tǒng)內(nèi)的優(yōu)勢硝化菌屬為硝化螺旋菌屬Nitrospira，其在懸浮載體生物膜和活性污泥中的相對豐度分別為8.98%和0.92%，懸浮載體的投加使硝化細菌得到有效富集；反硝化菌在生物膜中的占比為7.94%，為懸浮載體同步硝化反硝化（SND）效果的發(fā)生提供了微觀保證，提高了TN去除率。
Abstract:- An industrial wastewater treatment plant in Zhejiang was upgraded by a combined process consisting of anaerobic/anoxic/oxic activated sludge process and moving bed biofilm reactor (AAO-MBBR). Without changing the footprint and increasing the reactor volume, the treatment capacity increased from 30 000 m3/d to 60 000 m3/d after retrofitting. Concentrations of COD, TP, NH3-N and TN in effluent were (37.7±6.61) mg/L, (0.09±0.03) mg/L, (0.25±0.14) mg/L and (5.87±1.54) mg/L, respectively, which met the first class A standard. Actual operation data indicated that TN removal existed in the aerobic MBBR zone (accounting for 10.36% of total TN removal). Nitrospira was the dominant nitrifying bacteria in the system, and its relative abundance in the suspended carrier and activated sludge was 8.98% and 0.92%, respectively, indicating that the addition of suspended carrier could effectively enrich the nitrifying bacteria. The proportion of denitrifying bacteria on biofilm was 7.94%, which created a microenvironment for the occurrence of simultaneous nitrification and denitrification (SND) in the suspended carrier and improved the TN removal efficiency.
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