基于純膜MBBR的BioFIMag®工藝用于新建污水廠
周家中,韓文杰,蘇丹丹,劉宜龍,苑廣耀,殷建文,吳迪
（青島思普潤(rùn)水處理股份有限公司，山東 青島，266510）
摘要：肇慶市某新建污水處理廠設(shè)計(jì)處理規(guī)模3×104m3/d，出水需滿足《城鎮(zhèn)污水處理廠綜合排放標(biāo)準(zhǔn)》（GB18918-2002）一級(jí)A標(biāo)準(zhǔn)。采用基于純膜MBBR的BioFIMag®工藝解決了項(xiàng)目占地緊張、施工周期短的問(wèn)題。通過(guò)高密度生物膜區(qū)、強(qiáng)化膜水分離區(qū)并加載智能控制系統(tǒng)確保項(xiàng)目出水水質(zhì)穩(wěn)定達(dá)標(biāo)及污水廠精準(zhǔn)運(yùn)行。工程實(shí)施后該污水處理廠實(shí)際占地僅為0.067 m2/(m3·d-1)。僅用時(shí)30d即完成項(xiàng)目的設(shè)計(jì)、施工和調(diào)試，出水COD、NH4+-N、TP、SS分別為13.07mg/L、1.47mg/L、0.26 mg/L、2.83mg/L，優(yōu)于一級(jí)A標(biāo)準(zhǔn)。該項(xiàng)目運(yùn)行電耗0.203 kW·h/t。除磷混凝劑采用PAC，投加的Al/去除的TP的摩爾比為2.1。直接運(yùn)行費(fèi)用0.168元/t。BioFIMag®工藝具有極限占地、極限處理、超快實(shí)施、經(jīng)濟(jì)節(jié)約、管理簡(jiǎn)便等優(yōu)勢(shì)，適用于應(yīng)急污水處理項(xiàng)目的實(shí)施。
關(guān)鍵詞：純膜MBBR；生物膜；極限占地；一級(jí)A
Application of BioFIMag Pure MBBR in New Emergency Wastewater Treatment Plant
ZHOU Jia-zhong, HAN Wenjie,SU Dan-dan,LIU Yi-long, YUAN Guang-yao, YING Jian-wen, WU Di*
(Qingdao SPRING Water Treatment Co.,Ltd, Qingdao 266510, China)
Abstract：The design treatment capacity of an wastewater treatment plant in Zhaoqing city is 3×104m3/d, the effluent quality should reach the first level A criteria of “Discharge standard of pollutants for municipal wastewater treatment plant” (GB 18918-2002). The application of BioFIMag® process solves the problems of compact land occupation and short construction period of the project. Through high-density biofilm area, enhanced membrane water separation area and loading intelligent control system, the effluent quality is stable up to the standard of level A and the sewage treatment plant can realiezed the accurate operation. After the implementation of the project, the actual land occupation of the WWTP is only 0.067 m2/(m3·d-1). It take only 30 days to complete the design, construction and commissioning of the project. The effluent COD、NH4+-N、TP、and SS are (13.07mg/L、1.47mg/L、0.26mg/L、2.83mg/L, respectively, which are better than first level A criteria. The power consumption of the project is 0.203 kW·h/t. PAC is used as coagulant for phosphorus removal, and the molar ratio of Al added to TP removed is 2.1. The direct operation cost is 0.168 yuan/t. The BioFIMag® process has the advantages of limited land occupation, extreme treatment, ultra fast implementation, economic saving and simple management, which is suitable for the implementation of emergency wastewater treatment project.
Keywords： Pure MBBR; Biofilm; Limit land occupation; First level A criteria
1 項(xiàng)目簡(jiǎn)介
廣東省肇慶市某城區(qū)在污水管網(wǎng)改造后，污水處理流量大幅度升高，但與之配套的污水處理廠面臨著進(jìn)水容納能力不足的問(wèn)題，從而使得約有3×104m3/d的污水無(wú)法進(jìn)行有效處理。所以針對(duì)3萬(wàn)t/d的污水處理缺口，急需建設(shè)污水處理廠，以實(shí)現(xiàn)污水達(dá)標(biāo)排放。該污水處理廠位于肇慶市某污水處理廠廠內(nèi)預(yù)留地，占地面積為2000m2，設(shè)計(jì)污水處理規(guī)模為3×104m3/d，其出水主要水質(zhì)指標(biāo)COD、NH4+-N、SS和TP等執(zhí)行國(guó)家《城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)》（GB 18918-2002 ）中的一級(jí)A標(biāo)準(zhǔn)，設(shè)計(jì)進(jìn)出水水質(zhì)見(jiàn)表1。
表1. 設(shè)計(jì)進(jìn)出水水質(zhì)（mg/L）
Tab.1 Design water quality of inffluent and effluent
|
指標(biāo) |
CODcr |
SS |
NH4+-N |
TP |
|
設(shè)計(jì)進(jìn)水 |
250 |
200 |
30 |
4.0 |
|
設(shè)計(jì)出水 |
50 |
10 |
5（8） |
0.5 |
本項(xiàng)目主要面臨以下困難：1）實(shí)施周期短：為保障廢水能到及時(shí)有效的處理，該項(xiàng)目需要在60d之內(nèi)完成設(shè)計(jì)、施工和通水達(dá)標(biāo)，實(shí)施時(shí)間較短；2）占地極限受限：該項(xiàng)目所提供的建設(shè)用地如圖1所示，其中紅色線框內(nèi)為可用土體，面積僅為2000m2（100m×20m），且呈狹長(zhǎng)區(qū)間分布，不僅需要將所有工藝構(gòu)筑物布置于此，還需進(jìn)行合理的平面布置；3）工藝運(yùn)行穩(wěn)定性要求高：雖然本項(xiàng)目核心污染物指標(biāo)如COD、NH4+-N、TP、SS等僅需要達(dá)到《城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)》（GB 18918-2002）中的一級(jí)A標(biāo)準(zhǔn)，但由于實(shí)施周期短和占地受限，故對(duì)于工藝運(yùn)行穩(wěn)定性要求更高。
