本文選題：海水淡化　切入點(diǎn)：氯化消毒　出處：《環(huán)境工程》2016年03期 　論文類型：期刊論文

【摘要】：氯消毒廣泛應(yīng)用于海水利用的預(yù)處理過程中,以減少生物膜淤積,而消毒過程會導(dǎo)致各類消毒副產(chǎn)物(DBPs)的生成,可能會對海洋生態(tài)環(huán)境具有潛在危害。系統(tǒng)研究了操作條件和水質(zhì)對海水氯化消毒過程中生成三鹵甲烷(THMs)、鹵乙腈(HANs)和鹵乙酸(HAAs)的影響。結(jié)果表明,氯投加量對DBPs生成的影響最大,隨著投氯量的增加,THMs、HANs和HAAs的生成量顯著增加,在反應(yīng)初期隨反應(yīng)時(shí)間的延長而增加,隨后HANs和HAAs的生成量開始緩慢降低而THMs基本保持不變。隨著溫度升高,THMs的生成量穩(wěn)步增加,而HAAs和HANs在分別達(dá)到30,25℃后生成量達(dá)到最大值,之后隨溫度的升高而降低。p H對THMs、HANs和HAAs生成的影響相反,在酸性條件下HANs和HAAs的生成量最多,而在堿性條件下THMs的生成量最多。THMs、HANs和HAAs的生成量隨溴離子濃度的改變無明顯變化,但是隨著氨氮濃度的升高,THMs、HANs和HAAs的生成種類和生成量均有明顯降低。
[Abstract]:Chlorine disinfection is widely used in the pretreatment process of seawater utilization to reduce the deposition of biofilm, and the disinfection process will lead to the formation of various disinfection by-products (DBPs). The effects of operating conditions and water quality on the formation of trihalomethane (THMsN), halogen acetonitrile (HANs) and haloacetic acid (HAASS) during chlorination of seawater were systematically studied. Chlorine dosage had the greatest effect on the formation of DBPs. With the increase of chlorine dosage, the production of THMsHANs and HAAs increased significantly, and increased with the prolongation of reaction time at the initial stage of the reaction. Then the production of HANs and HAAs began to decrease slowly, but THMs remained unchanged. With the increase of temperature, the production of HAAs and HANs increased steadily, while HAAs and HANs reached the maximum value after 30 鈩，

本文編號：1586992