摘要
用两步厌氧发酵工艺处理浓缩胶乳加工废水的生产性研究结果表明,这种含有高浓度硫酸盐和氨态氮的酸性废水,在常温条件下,发酵池有机负荷率为1.57kgCOD/(m ̄3·d),容积产气率达0.60m ̄3/(m ̄3·d),COD去除率为70.3%。每处理1m ̄3废水(COD值25000mg/L)可生产含甲烷60%以上的沼气8.2m ̄3,应用于胶清胶的干燥,可节省干燥所需鱼油的85~90%。废水厌氧发酵后经氧化塘进一步好氧处理,出水COD值166mg/L,NH_3-N 69mg/L,S ̄(2-)3.9mg/L。大大减轻了废水对环境的污染,为浓缩胶乳加工废水提供了一种节能的处理方法。
Adopting two steps system of anaerobic fermentation technology to trcat effluent produced in the processingof concentrated latex in full scale indicats that the acid waste contains high content of sulfate and ammonia nitrogen. Atambient temperature the organic loading of the system in the digester is 1.57kg COD/( m ̄3.d),the volumetric biogasproduction rate reaches 0. 60m ̄3/(m ̄3.d)adn the removal rate attains to 70.3%. More than 8.2m ̄3 biogas can be obtained attreatment of 1 m ̄3 waste water(COD at 25,000mg/L),in which the content of methane in biogas exceed 60%. The biogas isused to dry skim rubber. 85-90%of heavy oil can be saved. After anaerobic fermentation,further treatment are made inaerobic pond,and the COD of the effluent become;166 mg/L,NH_3-N changes into 69 mg/L and S ̄(2-) turnS into 3.9mg/L.Through the treatment, the enviromental pollution can be greatly reduced,thus provided an cnergy saving niethod forwastewater disposal in concentracted latex processing factory.
出处
《中国沼气》
北大核心
1995年第4期7-11,共5页
China Biogas
关键词
两步厌氧发酵
浓缩胶乳加工
废水
硫酸盐
氨态氮
Two steps anaerobic fernientation,concentrated latex proccesing wastcwater,sulfate, NH_3-N.