The invention discloses a synchronous anaerobic nitrogen removal and sulfur removal process. The anaerobic digestion sludge of municipal wastewater treatment plant or anaerobic activated sludge from sulfate containing organic wastewater treatment plant were used as inoculum to oxidize sulfide into elemental sulfur, and nitrite was reduced to nitrogen. Nitrite and sulfide concentration is 20 ~ 2270mg and 30 ~ N / L 1920mg S / L molar ratio of 0.5 to 4, the reaction temperature is 20 to 35 DEG C, the pH value is 6 ~ 9, hydraulic retention time is 0.08 ~ 2.0d. The advantages of the invention are: 1) using nitrite as electron acceptor, sulfide as electron donor, removal of nitrogen and sulfur of two kinds of pollutants at the same time; 2) without oxygen, avoid the pollution caused by hydrogen sulfide aeration to the surrounding air, and save oxygen consumption; 3) can be recovered by using elemental sulfur, and waste resources; 4) the concentration of nitrite can handle up to 2270mg N / L, S / 1920mg sulfide concentration is as high as L, nitrite removal load up to 32.62kg / N (M = 3.D), sulfide removal load up to 27.64kg / S (M = 3.D).
【技术实现步骤摘要】
【技术保护点】
一种污水生物同步脱氮除硫工艺，其特征在于，以城市污水处理厂的厌氧消化污泥或含硫酸盐有机废水处理厂的厌氧活性污泥作为接种物，以亚硝酸盐作为电子受体，将硫化物氧化成单质硫，于同一反应器中将亚硝酸盐还原成氮气，亚硝酸盐与硫化物浓度为２０～２２７０ｍｇＮ／Ｌ和３０～１９２０ｍｇＳ／Ｌ，亚硝酸盐与硫化物摩尔比为０．５～４．０，反应温度为２０～３５℃，ｐＨ值为６～９，水力停留时间为０．０８～２．０ｄ。
【技术特征摘要】
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