[1]馬躍龍,徐瑤瑤,劉寧,等.SBR/RO工藝源分離尿液處理特性研究[J].中國(guó)給水排水,2020,36(21):7-14.
MA Yue-long,XU Yao-yao,LIU Ning,et al.Treatment Characteristics of Source-separated Urine by SBR/RO Process[J].China Water & Wastewater,2020,36(21):7-14.
點(diǎn)擊復(fù)制
MA Yue-long,XU Yao-yao,LIU Ning,et al.Treatment Characteristics of Source-separated Urine by SBR/RO Process[J].China Water & Wastewater,2020,36(21):7-14.
SBR/RO工藝源分離尿液處理特性研究
中國(guó)給水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 36 期數(shù): 2020年第21期 頁(yè)碼: 7-14 欄目: 出版日期: 2020-11-01
- Title:
- Treatment Characteristics of Source-separated Urine by SBR/RO Process
- 摘要:
- 針對(duì)源分離生態(tài)廁所中尿液處理后難以回用的問(wèn)題，設(shè)計(jì)開(kāi)發(fā)了SBR/RO尿液處理系統(tǒng)，研究了SBR耦合RO工藝的最優(yōu)工況及其對(duì)尿液中污染物的去除特性。結(jié)果表明，SBR的硝化性能隨污泥濃度的升高而增強(qiáng)，pH值是影響系統(tǒng)硝化性能的主要因素，將其污泥濃度提升至12 g/L，pH值維持在7.0~8.0，可避免反應(yīng)體系內(nèi)因尿液中尿素分解產(chǎn)生的NH+4-N積累對(duì)系統(tǒng)出水水質(zhì)的不利影響。為減少反硝化反應(yīng)時(shí)間，分析了進(jìn)水碳源種類及比例對(duì)尿液中污染物去除速率的影響，結(jié)果表明，采用葡萄糖/乙酸鈉混合碳源（質(zhì)量比為0.73 ∶1）時(shí)，系統(tǒng)對(duì)污染物的去除速率最高，反應(yīng)所需時(shí)間最短，因此將外加碳源優(yōu)化為此混合碳源，同時(shí)將缺氧段與曝氣段時(shí)間調(diào)整為1 h和5 h。在最優(yōu)條件下連續(xù)運(yùn)行SBR/RO系統(tǒng)，其中SBR系統(tǒng)對(duì)尿素和NH4+-N的去除率大于99%，出水NO2--N和NO3--N濃度分別穩(wěn)定在18~33、85~110 mg/L。SBR/RO工藝對(duì)尿液中的污染物去除效果明顯，出水水質(zhì)滿足《城市污水再生利用 城市雜用水水質(zhì)》（GB/T 18920—2002）中的沖廁用水水質(zhì)標(biāo)準(zhǔn)。
- Abstract:
- Aiming at the problem of difficulty in reusing urine in source-separated ecological toilets, a combined urine treatment system of sequencing batch reactor (SBR) and reverse osmosis (RO) was designed and developed, and the optimal operating conditions of the coupling SBR/RO process and its removal characteristics of urine pollutants were studied. The nitrification performance of the SBR increased with the increase of the sludge concentration,and pH was the main factor affecting the nitrification performance. Therefore, influence of NH4+-N accumulation generated by the decomposition of urea in SBR on the effluent quality could be avoided by increasing the sludge concentration to 12 g/L and maintaining the pH between 7.0 and 8.0. In order to reduce the reaction time of the denitrification stage, influence of the type and proportion of influent carbon source on removal efficiency of pollutants in urine was analyzed. When mixed carbon source of glucose/sodium acetate (mass ratio 0.73 ∶1) was used, the system had the highest pollutants removal efficiency and the shortest reaction time. Therefore, the influent carbon source was optimized to be a mixed carbon source, and the anoxic and aeration reaction time were adjusted to 1 h and 5 h. The SBR/RO system was continuously operated under the optimal conditions. The removal efficiencies of urea and NH4+-N in the SBR system were more than 99%, and the effluent NO2--N and NO3--N concentrations were stably maintained at 18-33 mg/L and 85-110 mg/L, respectively. The SBR/RO system had a significant effect on the removal of pollutants in urine, and the effluent quality of the system met the flushing water quality standard specified in The Reuse of Urban Recycling Water—Water Quality Standard for Urban Miscellaneous Water Consumption (GB/T 18920-2002).
相似文獻(xiàn)/References:
[1]張健,李孟飛,李萌,等.負(fù)壓排水技術(shù)在鄉(xiāng)村污水收集中的應(yīng)用[J].中國(guó)給水排水,2020,36(22):66.
ZHANG Jian,LI Meng-fei,LI Meng,et al.Application of Negative Pressure (Vacuum) Drainage Technology in Collection of Rural Sewage[J].China Water & Wastewater,2020,36(21):66.
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