不同基質組合滲濾系統(tǒng)去除污水中總磷和氨氮研究
發(fā)布時間：2019-02-14 20:13
【摘要】：試驗選取活性炭、沸石、無煙煤、陶粒和草炭五種基質作為土壤滲濾系統(tǒng)填料基質,進行靜態(tài)吸附吸附試驗,并對其去除總磷和氨氮效果進行對比研究。將靜態(tài)吸附試驗中篩選的基質與土壤進行不同比例混合,作為玻璃柱裝置的填充基質進行模擬土柱試驗,從而選擇去除總磷和氨氮的最優(yōu)基質配比。結果表明,在基質篩選的靜態(tài)吸附試驗中,5種基質對總磷的吸附去除率由大到小依次為：無煙煤活性炭沸石草炭陶粒；對氨氮的吸附去除率由大到小依次為：草炭沸石活性炭粉煤灰陶粒。通過室內土柱試驗模擬土壤滲濾系統(tǒng),考察了土壤(TR)、無煙煤(WY)、活性炭(HX)、土壤+無煙煤(TR+WY)、土壤+活性炭(TR+HX)、土壤+無煙煤+活性炭(TR+WY+HX)6種基質組合對污水中總磷的去除效果以及對pH的影響。也考查了土壤(TR)、沸石(FS)、草炭(CT)、沸石+土壤(FS+TR)、草炭+土壤(CT+TR)、沸石+草炭+土壤(FS+CT+TR)6種基質組合對污水中氨氮的去除效果以及對pH的影響。結果表明,在水力負荷0.08 m3m-2d-1條件下,6種不同填充基質對污水中總磷的去除效果由大到小分別為：WYTR+WYTR+WY+HXHXTR+HXTR。其中經WY、TR+WY以及TR+WY+HX處理后的污水,出水中總磷的平均質量濃度達到了《城鎮(zhèn)污水處理廠污染物排放標準》中的一級A標準；除處理WY、TR+HX外,經其他基質組合去除后的污水pH值與進水pH值均無顯著差異。在模擬土柱實驗中,當水力負荷為0.08 m3m-2d-1,進水氨氮平均濃度為65.58 mg/L時,6種裝置中不同基質組合對污水中氨氮的去除效果由大到小依次為FS+TRTRCT+TRFS+CT+TRCTFS裝置。經FS+TR和TR去除的污水,出水氨氮的平均濃度達到了《城鎮(zhèn)污水處理廠污染物排放標準》中的一級A標準。除處理CT出水的pH值偏低外,其他基質組合出水的平均pH值均在國家排放污水標準的pH值之內�？芍恍┨盍匣|能夠全部或部分替代純土壤,且其中某些處理優(yōu)于原有土壤處理,對污水中總磷和氨氮的去除率均有顯著提高。
[Abstract]:Activated carbon, zeolite, anthracite, ceramsite and peat were selected as the fillers of soil leachate system. The static adsorption experiments were carried out, and the results of removal of total phosphorus and ammonia nitrogen were compared. The matrix selected in the static adsorption test was mixed with soil in different proportion, and the soil column was simulated as the filled matrix of glass column device, and the optimal ratio of matrix to remove total phosphorus and ammonia nitrogen was selected. The results showed that in the static adsorption test, the removal rates of total phosphorus from five substrates were as follows: anthracite activated carbon zeolite peat ceramsite; The removal rate of ammonia nitrogen from large to small is peat zeolite activated carbon fly ash ceramsite. The soil (TR), anthracite (WY), activated carbon (WY),) activated carbon (HX),) soil anthracite (TR WY),) activated carbon (TR HX),) was investigated by simulating soil leachate system with soil column test in laboratory. The removal efficiency of total phosphorus and the effect on pH of soil anthracite activated carbon (TR WY HX) combined with six substrates. Soil (TR), zeolites, (FS), peat, (CT), zeolites, (FS TR), peat soils, (CT TR), were also investigated. The removal efficiency of ammonia nitrogen and the effect of pH on the removal of ammonia nitrogen from waste water by six matrix combinations of (FS CT TR) in zeolite peat soil. The results showed that under the hydraulic loading of 0.08 m3m-2d-1, the removal efficiency of total phosphorus from six different filling substrates was: WYTR WY HXHXTR HXTR. from large to small. After treatment with WY,TR WY and TR WY HX, the average mass concentration of total phosphorus in the effluent reaches the first class A standard of the pollutant discharge standard of the municipal wastewater treatment plant. Except for the treatment of WY,TR HX, there was no significant difference between the pH value of sewage treated by other matrix combination and the pH value of influent. In the simulated soil column experiment, when the hydraulic load is 0.08 m ~ (-3) m ~ (-2) d ~ (-1) and the average concentration of influent ammonia nitrogen is 65.58 mg/L, The removal efficiency of ammonia nitrogen from sewage by different matrix combinations in 6 kinds of plants is FS TRTRCT TRFS CT TRCTFS unit in order from large to small. After FS TR and TR removal, the average concentration of ammonia nitrogen in the effluent reached the first class A standard of the pollutant discharge standard of the municipal wastewater treatment plant. Except for the low pH value of CT effluent, the average pH value of other matrix combinations was within the pH value of the national wastewater discharge standard. It can be seen that some filler substrates can completely or partially replace the pure soil, and some of them are better than the original soil treatment, and the removal efficiency of total phosphorus and ammonia nitrogen in sewage is improved significantly.
【學位授予單位】：北京林業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X703
本文編號：2422565
[Abstract]:Activated carbon, zeolite, anthracite, ceramsite and peat were selected as the fillers of soil leachate system. The static adsorption experiments were carried out, and the results of removal of total phosphorus and ammonia nitrogen were compared. The matrix selected in the static adsorption test was mixed with soil in different proportion, and the soil column was simulated as the filled matrix of glass column device, and the optimal ratio of matrix to remove total phosphorus and ammonia nitrogen was selected. The results showed that in the static adsorption test, the removal rates of total phosphorus from five substrates were as follows: anthracite activated carbon zeolite peat ceramsite; The removal rate of ammonia nitrogen from large to small is peat zeolite activated carbon fly ash ceramsite. The soil (TR), anthracite (WY), activated carbon (WY),) activated carbon (HX),) soil anthracite (TR WY),) activated carbon (TR HX),) was investigated by simulating soil leachate system with soil column test in laboratory. The removal efficiency of total phosphorus and the effect on pH of soil anthracite activated carbon (TR WY HX) combined with six substrates. Soil (TR), zeolites, (FS), peat, (CT), zeolites, (FS TR), peat soils, (CT TR), were also investigated. The removal efficiency of ammonia nitrogen and the effect of pH on the removal of ammonia nitrogen from waste water by six matrix combinations of (FS CT TR) in zeolite peat soil. The results showed that under the hydraulic loading of 0.08 m3m-2d-1, the removal efficiency of total phosphorus from six different filling substrates was: WYTR WY HXHXTR HXTR. from large to small. After treatment with WY,TR WY and TR WY HX, the average mass concentration of total phosphorus in the effluent reaches the first class A standard of the pollutant discharge standard of the municipal wastewater treatment plant. Except for the treatment of WY,TR HX, there was no significant difference between the pH value of sewage treated by other matrix combination and the pH value of influent. In the simulated soil column experiment, when the hydraulic load is 0.08 m ~ (-3) m ~ (-2) d ~ (-1) and the average concentration of influent ammonia nitrogen is 65.58 mg/L, The removal efficiency of ammonia nitrogen from sewage by different matrix combinations in 6 kinds of plants is FS TRTRCT TRFS CT TRCTFS unit in order from large to small. After FS TR and TR removal, the average concentration of ammonia nitrogen in the effluent reached the first class A standard of the pollutant discharge standard of the municipal wastewater treatment plant. Except for the low pH value of CT effluent, the average pH value of other matrix combinations was within the pH value of the national wastewater discharge standard. It can be seen that some filler substrates can completely or partially replace the pure soil, and some of them are better than the original soil treatment, and the removal efficiency of total phosphorus and ammonia nitrogen in sewage is improved significantly.
【學位授予單位】：北京林業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X703
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