本文選題：炭泥 + 循環(huán)吸附　； 參考：《山東建筑大學(xué)》2017年碩士論文

【摘要】：近年來,隨著地表水源水受周邊環(huán)境污染影響的加劇,季節(jié)性枯水期使得微污染物質(zhì)變得更加復(fù)雜,水體富營養(yǎng)化越來越嚴(yán)重,傳統(tǒng)的水處理工藝很難保證水廠出水水質(zhì)要求。高密市孚日自來水廠的原水有機(jī)物藻類含量近年來不斷增加,亟需升級水廠現(xiàn)有工藝以保證出水水質(zhì)。研究提出一種新型微污染水源水預(yù)處理技術(shù)——炭泥系統(tǒng)循環(huán)吸附降解技術(shù)(Carbon-Sludge system Circle Adsorption Bio-degradation technology),簡稱CSCAB技術(shù)。本文主要研究了CSCAB技術(shù)對水廠原水的預(yù)處理效果。試驗(yàn)研究了系統(tǒng)中生化池的啟動、調(diào)試與運(yùn)行,考察了系統(tǒng)對原水CODcr、UV254、氨氮、各藻類指標(biāo)的去除效果,總結(jié)了溫度、有機(jī)物濃度、pH、停留時間、生物活化炭泥濃度等因素對系統(tǒng)處理效果的影響。炭泥系統(tǒng)主要由生物再生池、吸附池、混凝沉淀池和回流系統(tǒng)構(gòu)成,利用生物活化炭泥的吸附降解特性、生物泥絮凝劑助凝作用強(qiáng)化混凝效果,去除水中有機(jī)物、藻類等物質(zhì)。生物再生池正常運(yùn)行后,對CODcr、氨氮與UV254的去除率分別達(dá)到53.09%、33.74%、28.66%;對綠藻、藍(lán)藻、硅藻、隱藻的去除率分別達(dá)到32.19%、51.89%、50.94%、38.89%。生物活化炭泥的最佳投加體積比為3%。生物活化炭泥分別進(jìn)入吸附池進(jìn)行吸附降解、混凝沉淀池炭泥強(qiáng)化混凝,對原水CODcr、UV254、氨氮、藻類細(xì)胞總數(shù)及濁度的去除率分別為53.99%、44.05%、58.63%、40.14%、56.11%;處理后水中的CODcr、UV254、氨氮、藻類細(xì)胞總數(shù)及濁度分別為6.83mg/L、0.10 cm-1、0.13mg/L、10331cell/ml、1.58NTU。影響炭泥系統(tǒng)處理效果的因素有溫度、有機(jī)物濃度、pH、停留時間、生物活化炭泥濃度等。水溫變化對系統(tǒng)的處理效果影響較大,溫度越高對有機(jī)物藻類各指標(biāo)的去除率越大,溫度達(dá)到28.4℃時CODcr、氨氮、UV254的去除率達(dá)到最大值。冬季采用回流系統(tǒng)適當(dāng)加溫的方式,提高系統(tǒng)冬季處理效果,且能耗較低。原水有機(jī)物濃度升高后,生物活化炭泥的吸附降解率也隨之升高,且當(dāng)CODcr濃度為25.74mg/L時,CODcr和藻類的去除率達(dá)到67.4%、49.4%。pH對系統(tǒng)的影響較大,酸性較大時(6.5)系統(tǒng)出水的CODcr、藻類濃度較高,pH在6.5~8.0時,出水CODcr與藻類細(xì)胞總數(shù)含量較低;當(dāng)pH上升到8.5時,出水CODcr濃度升高,而藻類細(xì)胞總數(shù)降低。通過對生物再生池不同停留時間的處理效果試驗(yàn)研究表明,生物再生池最佳的停留時間為10h。生物活化炭泥濃度隨著系統(tǒng)的運(yùn)行不斷升高,試驗(yàn)研究表明炭泥濃度在3500~4500mg/L處理效果較好,炭泥濃度過高時可通過適當(dāng)炭泥外排、調(diào)節(jié)回流系統(tǒng)等方式降低炭泥濃度,使系統(tǒng)達(dá)到最佳的處理效果。
[Abstract]:In recent years, as the surface water source water is affected by the surrounding environmental pollution, the seasonal dry season makes the micro-polluted material more complex, and the eutrophication of the water body becomes more and more serious. The traditional water treatment process is very difficult to ensure the water plant effluent quality requirements. The content of organic matter algae in raw water of Fulge Waterworks in Gaomi City has been increasing in recent years. It is urgent to upgrade the existing process of water plant in order to ensure the quality of effluent. In this paper, a new micro-polluted source water pretreatment technique, Carbon-Sludge system Circle Adsorption Bio-degradation technology, is proposed. In this paper, the pretreatment effect of CSCAB technology on raw water in water plant was studied. The start-up, commissioning and operation of the biochemical tank in the system were studied. The removal effects of the system on the CODcr-UV254, ammonia nitrogen and algae indexes in raw water were investigated, and the temperature, organic concentration pH and residence time were summarized. The influence of the concentration of activated carbon sludge on the treatment effect of the system. Carbon sludge system is mainly composed of biological regeneration tank, adsorption tank, coagulation sedimentation tank and reflux system. Biological sludge flocculant helps to enhance coagulation effect and remove organic matter, algae and other substances in water by utilizing the adsorption and degradation characteristics of biological activated carbon sludge. After normal operation, the removal rates of COD, NH3-N and UV254 were 53.09 and 33.74and 28.66respectively, and the removal rates of chlorophyta, cyanobacteria, diatoms and cryptophaga were 32.191.89and 50.94and 38.89respectively. The optimum volume ratio of activated carbon sludge is 3. The activated carbon sludge entered the adsorption tank for adsorption and degradation, and the activated carbon sludge enhanced the coagulation in the sedimentation tank. The removal rates of CODcrr UV254, ammonia nitrogen, total algal cell count and turbidity were 53.9999, 44.05 and 58.63 and 56.11, respectively; the CODcrcrn UV254, ammonia nitrogen, ammonia nitrogen, The total number and turbidity of algal cells were 6.83 mg / L 0.10 cm ~ (-1) and 0.13 mg 路L ~ (-1) mg 路ml ~ (-1) 路ml ~ (-1) NTU, respectively. The factors affecting the treatment effect of carbon sludge system are temperature, pH of organic matter, residence time, concentration of activated carbon sludge and so on. The change of water temperature has great influence on the treatment effect of the system. The higher the temperature is, the greater the removal rate of organic algae is. When the temperature reaches 28.4 鈩，

本文編號：1813362