本文選題：磷酸氨鎂 + 氮磷廢水��； 參考：《哈爾濱工程大學(xué)學(xué)報(bào)》2016年11期

【摘要】：磷酸氨鎂(MAP)法處理氮磷廢水過(guò)程中,NH_4~+-N和PO_4~(3-)-P的去除率無(wú)法反映影響MAP法的因素及沉淀物的生成過(guò)程。為解決此問(wèn)題通過(guò)單因素實(shí)驗(yàn)以及熱力學(xué)平衡計(jì)算的方法,對(duì)MAP法處理模擬氮磷廢水中的氨氮和磷酸鹽的影響因素進(jìn)行了分析和探討。研究了初始氨氮濃度、p H值、摩爾比n(Mg)∶n(N)以及摩爾比n(P)∶n(N)條件,對(duì)NH_4~+-N和PO_4~(3-)-P去除率的影響以及不同條件各沉淀組分的變化。結(jié)果表明,在p H值為9~9.5,摩爾比n(Mg)∶n(N)∶n(P)為1∶1∶1條件下,MAP法的處理效果最優(yōu),NH_4~+-N去除率可達(dá)79.35%~93.76%,PO_4~(3-)-P去除率可達(dá)86.76%~95.43%,且MAP沉淀物中雜質(zhì)較少;雖然增大摩爾比n(Mg)∶n(N)或摩爾比n(P)∶n(N)會(huì)分別提高PO_4~(3-)-P和NH_4~+-N去除率,但也會(huì)分別使NH_4~+-N和PO_4~(3-)-P殘余量增大。
[Abstract]:The removal rate of NH4- N and PO_4~(3-)-P in the treatment of nitrogen and phosphorus wastewater by magnesium phosphate (MMP) process can not reflect the factors affecting MAP process and the process of sediment formation. In order to solve this problem, the influence factors of ammonia nitrogen and phosphate in simulated nitrogen and phosphorus wastewater treated by MAP process were analyzed and discussed by single factor experiment and thermodynamic equilibrium calculation. The effects of the initial NH _ 3-N concentration and the molar ratio of NH _ 4-N and PO_4~(3-)-P on the removal rate of NH _ 4-N and PO_4~(3-)-P and the changes of precipitation components in different conditions were studied. The results show that under the condition that pH value is 9 / 9.5 and molar ratio is n / m / n / n ~ (-1) = 1:1:1, the treatment effect of map method is the best. The removal rate of NH _ 4 ~ -N can reach 79.35 ~ -N and 93.7676 ~ (-4) ~ (-N) ~ (-P) removal rate can reach 86.7676 ~ 95.43%, and the impurity in MAP sediment is less than that of map method. Although the increase of mole ratio (mg / N) or molar ratio (n / n) can increase the removal rate of PO_4~(3-)-P and NH4- N, respectively, it also increases the residual amount of NH4- N and PO_4~(3-)-P, respectively.
【作者單位】： 哈爾濱工程大學(xué)航天與建筑工程學(xué)院;
【基金】：中央高校基本科研業(yè)務(wù)費(fèi)項(xiàng)目(HEUCFZ1124) 城市水資源與水環(huán)境國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放研究項(xiàng)目(ESK201021)
【分類號(hào)】：X703.1

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