CN116332375B - 一种高盐废水的生化处理方法 - Google Patents
一种高盐废水的生化处理方法 Download PDFInfo
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- CN116332375B CN116332375B CN202310489574.9A CN202310489574A CN116332375B CN 116332375 B CN116332375 B CN 116332375B CN 202310489574 A CN202310489574 A CN 202310489574A CN 116332375 B CN116332375 B CN 116332375B
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
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- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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- C02F1/00—Treatment of water, waste water, or sewage
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- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/02—Aerobic processes
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- C02F3/28—Anaerobic digestion processes
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- C12N1/14—Fungi; Culture media therefor
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- C12N1/20—Bacteria; Culture media therefor
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- C12N13/00—Treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic waves
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/30—Organic compounds
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Health & Medical Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Tropical Medicine & Parasitology (AREA)
- Virology (AREA)
- Mycology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Botany (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
本发明涉及一种高盐废水的生化处理方法,包括如下步骤:(S1)将高盐废水经过高级氧化处理;(S2)高级氧化处理后的出水中投加复合嗜盐菌剂,悬挂式生物绳,缓释填料和保护剂,在厌氧池中进行厌氧生化处理;所述复合嗜盐菌剂包括乳酸杆菌,乳酸菌,水解酸化菌,产甲烷菌,酵母菌,醋酸杆菌和厌氧氨氧化菌;并且复合嗜盐菌剂经过活化处理和紫外光照处理;(S3)厌氧生化处理出水经过检测,可生化性达标后,在好氧池中经过好氧生化处理。本发明提供的高盐废水生化处理方法,复合菌通过紫外光照处理,以及在保护剂的作用下,可以适应复杂多变的含盐废水环境,可以正常发挥嗜盐复合菌在厌氧生化处理的优势。
Description
技术领域
本发明属于污水处理技术领域,具体涉及一种高盐废水的生化处理方法。
背景技术
高盐废水其处置是世界性难题,此类废水不仅含有极高的盐度,往往还伴随着大量有毒难降解溶解性有机物、氨氮、重金属和硫化物,这些复杂的成分提高了污水处理的难度,也大大增加了污水处理的成本。由于废水中的盐类物质多为氯盐,水中溶解度大,采用常规的浓缩、结晶的方法,无法有效分离出盐类物质。在现有的高盐废水处理技术中,生化法具有低成本、高效性、无害化、简单易于操作等优点,解决物化方法运行成本高、处理效果不稳定、产生二次污染的问题,同时还能保持可观的污染物降解效果,具有强大的应用潜力,目前是这类废水处理研究中的热点。生化法中因厌氧生物处理技术兼具低耗能、高负荷、运行费用低和产生污泥少等优点,越来越受到人们的重视。
由于耐盐微生物通常生存于海洋、盐湖、盐碱地、晒盐池等高盐环境中,其生存生长依赖于较高的盐浓度,因此在高含盐废水的处理过程中,能够迅速适应环境进而发挥积极作用。近年来,随着耐盐、嗜盐菌的成功分离、驯化是的采用生化方法处理高盐废水成为可能。比如利用光强化调控技术(如UV光)提升微生物高渗适应能力是近年来的研究热点。虽然紫外线照射会引起微生物诱变DNA 损伤,进而导致生物失活,但研究发现,将 UV 光强度控制在合适范围,即可在较高盐度条件下提高污染物去除率。最新研究指出,乳酸乳杆菌在254 nm紫外线照射下暴露30 min将产生热应激蛋白(如 Gro EL 和 Gro ES),同时可能产生交叉保护效应并增加微生物胞内甜菜碱等胞内小分子相容溶质含量,有效提升菌种高盐适应能力。同时研究发现,CPD光解酶基因Pn PHR1,在UV-B 辐射下可提高其表达水平,该基因通过增强根际微生物胞内 Na+/H+逆向转运蛋白基因(NHX)表达、高亲和力钾转运蛋白(HKT)表达以及胞内脯氨酸合成,进而提升其对 UV-B 辐射和盐胁迫的耐性。综上,光强化调控技术可提升微生物高渗适应能力,从而加速高盐环境下微生物的耐盐驯化过程,为高盐废水生化处理提供了基础。
发明内容
针对高盐废水物化方法运行成本高、处理效果不稳定、产生二次污染的问题,并且耐盐厌氧菌存在培养驯化周期长和应用困难等问题。本发明提出一种高盐废水的生化处理方法,旨在实现高盐废水的低成本、高效率、无害化处理。
本发明方法中将光强化调控技术运用于厌氧耐盐菌的驯化培养,提供一种操作简便、清洁环保、高效科学的耐盐厌氧菌驯化培养方法。能够克服现有的高盐废水物化处理技术中设备昂贵、运行成本高、处理效率低、处理过程中容易产生二次污染以及耐盐厌氧菌培养驯化周期长和应用困难的局限性,能够很好的满足实际的需要。
为实现上述目的,本发明提供了以下技术方案:
一种高盐废水的生化处理方法,其特征在于,包括如下步骤:
(S1)将高盐废水经过高级氧化处理;
(S2)高级氧化处理后的出水中投加复合嗜盐菌剂,悬挂式生物绳,缓释填料和保护剂,在厌氧池中进行厌氧生化处理;所述复合嗜盐菌剂包括乳酸杆菌,乳酸菌,水解酸化菌,产甲烷菌,酵母菌,醋酸杆菌,厌氧氨氧化菌;并且复合嗜盐菌剂是经过活化处理和紫外光照处理;
(S3)厌氧生化处理出水经过检测,可生化性达标后,在好氧池中经过好氧生化处理。
进一步地,步骤(S1)高级氧化处理是废水进行臭氧曝气、投加双氧水、芬顿氧化处理;高级氧化处理的工艺参数为本领域所熟知,比如在本发明一个具体实施方式中,采用臭氧曝气处理,臭氧曝气速度为1-2L/min,曝气时长1-2h。
进一步地,步骤(S2),复合嗜盐菌剂中,乳酸杆菌,乳酸菌,水解酸化菌,产甲烷菌,酵母菌,醋酸杆菌和厌氧氨氧化菌的质量比为15-20:15-20:20-25:20-25:3-6:4-8:8-12。以上菌种可以完成高盐废水中有机物的消化和分解,提高B/C,增加废水的可生化性。复合嗜盐菌剂可以以干粉形式,也可以以稀释液形式投加,若为干粉,投加量是待处理污水的0.5-1wt%,若为复合嗜盐菌剂稀释液,则投加量是待处理污水的3-7wt%。
进一步地,步骤(S2),缓释填料包括以下质量份的原料:10-15份蜂蜡,15-20份生物蜡,5-8份碳酸钠;缓释填料的制备是将物料充分均匀混合即可。缓释填料投加量是待处理污水的0.5-1 wt%。
生物绳以悬挂式设置在有搅拌装置的厌氧池中,悬挂式生物绳有助于微生物生长,搅拌条件下使污水和复合嗜盐菌剂充分混合。悬挂式生物绳约占厌氧池体积5-10%。
进一步地,步骤(S2),所述保护剂为脯氨酸、谷氨酸、海藻糖、甜菜碱、微量元素剂按照质量比1-2:1-2:5-10:3-6:0.5-1的混合物。当受到渗透胁迫或盐度冲击时,微生物需要在胞内积累多种相容性溶质来抵抗胞外渗透压。而甜菜碱的存在能够减缓钠盐对厌氧生物反应器的毒性,谷氨酸能够提高颗粒污泥的代谢活性,甘氨酸存在于耐盐菌的细胞运输过程中,可以作为氨基酸类维持耐盐菌细胞渗透压, 海藻糖具有加强微生物抗旱保水的效果。多种相容性溶质复配保护剂从不同方向配合平衡外界盐分所带来的渗透压,保护微生物活性与正常生长代谢活动。保护剂的投加量为待处理废水0.2-0.4wt%。本发明保护剂对微生物菌有非常好的渗透保护效果,是很多真核细菌细胞内主要的相容性溶质。特别适合本发明复合菌,使其在高盐浓度废水中的保持活性,维持复合菌剂对抗胞内含水量的剧烈变化,从而调节渗透压维持复合菌剂的正常活力,提高复合菌剂在高盐浓度废水对有机物的降解能力。发明人经过试验,发现上述保护剂中脯氨酸、谷氨酸、海藻糖和甜菜碱这四种物质有一定配合作用,当保护剂总量保持不变时,缺失上述四种物质任意一种,或者替换为其他类似成分,都不能很好发挥保护维持复合菌活力的作用。微生物可通过胞内合成或从周围介质中直接获取进而积累胞内小分子相容溶质,包括脯氨酸、谷氨酸、海藻糖和甜菜碱等。相容性溶质具有分子量低、水溶性强、毒性弱等特点,可在生物细胞内高浓度积聚在维持细胞渗透平衡发挥重要作用。
所述微量元素剂的成分为本领域所熟知,包括微生物需要的微量营养元素,包括Fe、Mn、Zn、Ni等。进一步,所述微量元素剂包括以下质量份的组分:10-15份EDTA,3-5份硫酸亚铁,0.5-1份四水合二氯化锰,0.25-0.4份五水合硫酸铜,0.25-0.4份六水合二氯化钴,0.4-二水合钼酸钠0.7份七水合硫酸锌,0.15-0.3份六水合氯化镍,0.2-0.3份二水合钼酸钠,0.2-0.3份十水合锡酸钠。
进一步地,步骤(S2),厌氧生化处理是控制溶解氧低于0.2mg/L,pH为7-7.5,温度30-40℃,水力停留时间6-10h。经过步骤(S2)厌氧生化处理,废水的COD降低,B/C提高,可生化性达到可以进行常规好氧处理工艺的要求。
进一步地,步骤(S2),所述复合嗜盐菌剂是经过活化和紫外光照处理,包括以下步骤:
(T1)将包括乳酸杆菌,乳酸菌,水解酸化菌,产甲烷菌,酵母菌,醋酸杆菌和厌氧氨氧化菌在内的复合嗜盐菌剂按照质量比复配,配制为微生物复合菌剂;
(T2)微生物复合菌剂和培养基溶液配制为复合菌剂原液,进行活化处理;
进一步地,(T2)包括以下步骤:复合菌剂原液是将5-10质量份微生物复合菌剂和100质量份培养基,在30-37℃恒温条件下,厌氧条件下密封培养5-10天。检测微生物生长曲线,当体系微生物生长达到稳定期,即得活化后的复合菌剂原液。
更进一步地,所述培养基包括以下浓度的成分:
。
(T3)将活化后的复合菌剂原液和模拟污水按照体积比1:1-5混合(优选1:1-3),进行紫外光处理,得到耐盐复合厌氧菌稀释液;具体是将活化后的复合菌剂原液投加到模拟污水体系(盐度2-5%,COD 为5000-20000mg/L,氨氮为100-200mg/L,总氮为150-500mg/L),充分混合后进行230-260nm的紫外光照射,紫外灯功率10-20W,照射距离30-50cm,每次照射20-30s,每天照射1-3次,一共照射7-10天。UV光照射增加微生物胞内小分子相容溶质含量,提升了系统中微生物的高渗透压适应能力,提高微生物活性,助于微生物快速适应高盐环境。同时UV照射条件下,使得体系中杂菌或不适应该污水水质的菌种等非优势菌属失活死亡,保留适应污水质的厌氧菌,使其数量比例不断增高,得到耐盐复合厌氧菌;所得耐盐复合厌氧菌稀释液可以直接用于高盐废水的厌氧生化处理,也可以冷冻干燥为粉状复合菌剂使用;所述模拟污水体系和待处理污水水质基本相同。
步骤(T3)得到耐盐复合厌氧菌稀释液后,可以直接投加到上述步骤(S2)的待处理污水(即高级氧化处理后的出水)中进行厌氧处理,投加量是待处理污水的3-7wt%;也可以冷冻干燥为复合菌的干粉剂,若为干粉剂,投加量是待处理污水的0.5-1 wt%。
进一步地,步骤(S3)中,好氧生化处理为本领域所熟知。在本发明一个具体实施方式中,好氧池溶解氧含量在4-8mg/L,pH介于7.4-7.6之间,污泥浓度3500-5000mg/L,水力停留时间6-10h,好氧池的硝化液回流至厌氧池的回流比为80-100%。
进一步地,步骤(S2)之后,还包括复合菌的扩培保存步骤:对在挂膜厚度在1.5-1.8mm的生物膜按照5-10 wt%比例加入到培养基中扩培,扩培后的复合菌再次进行上述步骤(T3)中的紫外光照处理,但光照时间缩短为5-8天,得到耐盐复合厌氧菌稀释液,继续用于高盐废水的厌氧生化处理。所述培养基和上述步骤(T2)的培养基相同。
本发明的有益效果在于:
一、本发明提供的高盐废水生化处理方法,复合菌通过紫外光照处理,以及在保护剂的作用下,可以适应复杂多变的含盐废水环境,当含盐废水的COD,总氮、pH、温度、盐度、溶解氧、氧化还原电位、DO、ORP等物化参数在一定范围内波动时,本发明提供的方法能够使复合菌活性稳定保持在一个较高的水平,受外界干扰较小,可以正常发挥嗜盐复合菌在厌氧生化处理的优势。
二、本发明通过紫外光照技术,配合保护剂交叉效应增加微生物菌胞内小分子相容溶质含量,促进自身合成可溶性蛋白和多糖,提高微生物的高渗透压适应能力,有助于复合菌快速适应高盐环境,在高盐环境中稳定发挥生化处理效力。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将对本发明的技术方案进行详细的描述。以下的实施例便于更好地理解本发明,但并不限定本发明。下述实施例中的实验方法,如无特殊说明,均为常规方法。
本发明复合菌剂均采购自商业途经,具体而言,乳酸杆菌、乳酸菌、酵母菌、醋酸杆菌购于国家菌种资源库,水解酸化菌、产甲烷菌购于南京赛尔特生物技术有限公司,厌氧氨氧化菌购于潍坊凡星生物科技有限公司。
TWC生物蜡采购自鑫国环保科技有限公司。
生物绳悬挂式填料采用江苏艾勤环保科技有限公司。
高盐废水来自于新能源汽车企业三元材料前驱体生产高盐废水,盐度3.2%,COD为9000mg/L,氨氮为120mg/L,总氮为180mg/L。
实施例1
(T1)将乳酸杆菌,乳酸菌,水解酸化菌,产甲烷菌,酵母菌,醋酸杆菌,厌氧氨氧化菌按照质量比15:15:25:20:3:5:10配制为微生物复合菌剂;
(T2)微生物复合菌剂和培养基水溶液,配制为复合菌剂原液,微生物复合菌剂和培养基质量比为5:100,培养基成分和浓度如下表1所示,培养基溶液pH调节为7-7.2,120℃灭菌30min,冷却后和微生物复合菌剂混合均匀后,培养基上方滴加液体石蜡用于隔绝空气,并密封体系,保证厌氧条件。在30℃恒温条件下厌氧密封培养,培养过程中测试培养基OD600得到微生物生长曲线,当微生物生长达到稳定期得到活化的复合菌剂原液;
表1 培养基成分
;
(T3)将活化后的复合菌剂原液按照体积比1:1投加到模拟污水体系,进行254nm的紫外光照射,紫外灯功率10W,照射距离50cm,每次照射30s,每天照射2次(每隔约12h照射一次),照射7天,得到耐盐复合厌氧菌的稀释液。
(S1)将高盐废水经过臭氧曝气处理,臭氧曝气速度为1L/min,曝气时长1h。
(S2)臭氧曝气后,出水进入设置有悬挂式生物绳(体积约占厌氧池7%)和搅拌器的厌氧池,投加污水质量4 wt%的步骤(T3)得到的复合嗜盐菌剂稀释液,污水质量1 wt%缓释填料(缓释填料由15份蜂蜡,15份TWC生物蜡,8份碳酸钠混合制成,平均尺寸Φ15 mm)和污水质量0.4wt%的保护剂(脯氨酸、谷氨酸、海藻糖、甜菜碱和微量元素剂=按照质量比1:1:5:3:0.2的混合物,微量元素剂成分见表2),在厌氧池中进行厌氧生化处理;
表2 微量元素剂成分
。
对步骤(S2)经过厌氧生化处理的出水进行检测,结果如下表3所示:
表3 厌氧生化处理后水质
。
(S3)厌氧生化处理出水经过检测,B/C由0.30提升至0.52,可生化性达标后,在好氧池中经过好氧生化处理,出水达到排放标准排放或者中水回用。
实施例2
其他条件和操作与实施例1相同,区别在于步骤(T3)光照条件改为每次照射20s,每天照射3次(每隔约8h照射1次),照射10天。
实施例3
其他条件和操作与实施例1相同,区别在于步骤(T3),按照相同的光照条件,一共照射5天。
实施例4
其他条件和操作与实施例2相同,区别在于步骤(T3),按照相同的光照条件,一共照射15天。
实施例5
其他条件和操作与实施例1相同,区别在于步骤(S2)保护剂为脯氨酸、谷氨酸、海藻糖、甜菜碱和微量元素剂按照质量比1:2:10:3:0.2的混合物,且保护剂投加量为物质质量的0.2wt%。
实施例6
其他条件和操作与实施例1相同,区别在于步骤(S2)保护剂为谷氨酸、海藻糖、甜菜碱和微量元素剂按照质量比1:5:3:0.2的混合物,即保护剂不加入脯氨酸。
实施例7
其他条件和操作与实施例1相同,区别在于步骤(S2)保护剂为脯氨酸、海藻糖、甜菜碱和微量元素剂按照质量比1:5:3:0.2的混合物,即保护剂不加入谷氨酸。
实施例8
其他条件和操作与实施例1相同,区别在于步骤(S2)保护剂为脯氨酸、谷氨酸、甜菜碱和微量元素剂按照质量比1:1:3:0.2的混合物,即保护剂不加入海藻糖。
实施例9
其他条件和操作与实施例1相同,区别在于步骤(S2)保护剂为脯氨酸、谷氨酸、海藻糖、和微量元素剂按照质量比1:1:5:0.2的混合物,即保护剂不加入甜菜碱。
实施例10
其他条件和操作与实施例1相同,区别在于,步骤(T3)中不进行紫外光照处理。将步骤(T2)得到的复合菌剂原液与模拟污水按照体积比1:1混合,放置15天,按照待处理污水质量4wt%投加于步骤(S2)的厌氧池中。
将上述实施例步骤(S2)经过厌氧处理后出水和原水水质进行测试,结果如下表4所示。
表4 厌氧生化处理后水质
。
可以看出,本发明方法对于高盐度废水处理效果好,本发明通过外加保护剂,提高复合菌在高盐环境下的活力,提高了废水处理效果。通过实施例1,实施例5-8的比较,可以发现保护剂中,脯氨酸、谷氨酸、海藻糖、甜菜碱四种物质,如果缺少其中一种,对复合菌的保护作用都会下降,说明保护剂中这四种物质有一些的配合作用。
此外,发明人还对复合菌在模拟的高盐污水环境下进行经过紫外光照处理,处理后的复合菌对高盐废水适应能力显著提高,在厌氧池中对废水处理效果提高,可生化性显著变高。实施例9可以看出,该实施例未经紫外光照处理,复合菌的活力变差,但仍在可以接受的范围。
Claims (7)
1.一种高盐废水的生化处理方法,其特征在于,包括如下步骤:
(S1)将高盐废水经过高级氧化处理;
(S2)高级氧化处理后的出水中投加复合嗜盐菌剂,悬挂式生物绳,缓释填料和保护剂,在厌氧池中进行厌氧生化处理;所述复合嗜盐菌剂包括乳酸杆菌、乳酸菌、水解酸化菌、产甲烷菌、酵母菌、醋酸杆菌和厌氧氨氧化菌;并且复合嗜盐菌剂是经过活化处理和紫外光照处理;缓释填料包括以下质量份的原料:10-15份蜂蜡,15-20份生物蜡,5-8份碳酸钠;缓释填料投加量是待处理污水的0.5-1 wt%;悬挂式生物绳约占厌氧池体积5-10%;所述保护剂为脯氨酸、谷氨酸、海藻糖、甜菜碱、微量元素剂按照质量比1-2:1-2:5-10:3-6:0.5-1的混合物;保护剂的投加量为待处理废水0.2-0.4wt%;
所述复合嗜盐菌剂是经过活化和紫外光照处理,包括以下步骤:
(T1)将包括乳酸杆菌、乳酸菌、水解酸化菌、产甲烷菌、酵母菌、醋酸杆菌和厌氧氨氧化菌的复合嗜盐菌剂按照质量比复配,配制为微生物复合菌剂;
(T2)微生物复合菌剂和培养基溶液配制为复合菌剂原液,进行活化处理;
(T3)对活化后的复合菌剂原液和模拟污水混合按照体积比1:1-5混合,进行紫外光处理,得到耐盐复合厌氧菌稀释液;
(S3)厌氧生化处理出水经过检测,可生化性达标后,在好氧池中经过好氧生化处理。
2.根据权利要求1所述的高盐废水的生化处理方法,其特征在于,步骤(S1)高级氧化处理是废水进行臭氧曝气处理、投加双氧水处理或芬顿氧化处理;所述臭氧曝气处理,臭氧曝气速度为1-2L/min,曝气时长1-2h。
3.根据权利要求1所述的高盐废水的生化处理方法,其特征在于,步骤(S2),复合嗜盐菌剂中,乳酸杆菌、乳酸菌、水解酸化菌、产甲烷菌、酵母菌、醋酸杆菌、厌氧氨氧化菌的质量比为15-20:15-20:20-25:20-25:3-6:4-8:8-12。
4.根据权利要求1所述的高盐废水的生化处理方法,其特征在于,步骤(S2),厌氧生化处理是控制溶解氧低于0.2mg/L,pH为7-7.5,温度30-40℃,水力停留时间6-10h。
5.根据权利要求1所述的高盐废水的生化处理方法,其特征在于,步骤(T2)包括以下步骤:将5-10质量份微生物复合菌剂和100质量份培养基配制成复合菌剂原液;复合菌剂原液在30-37℃恒温、厌氧条件下密封培养5-10天;检测微生物生长曲线,当体系微生物生长达到稳定期,即得活化后的复合菌剂原液。
6.根据权利要求1所述的高盐废水的生化处理方法,其特征在于,步骤(T3)中,将活化后的复合菌剂原液投加到模拟污水体系,充分混合后进行230-260nm的紫外光照射,紫外灯功率10-20W,照射距离30-50cm,每次照射20-30s,每天照射1-3次,一共照射7-10天;所述模拟污水体系水质为盐度2-5%,COD 为5000-20000mg/L,氨氮为100-200mg/L,总氮为150-500mg/L。
7.根据权利要求1所述的高盐废水的生化处理方法,其特征在于,步骤(T3)得到耐盐复合厌氧菌稀释液后,直接投加到步骤(S2)的待处理污水中进行厌氧生化处理,投加量是待处理污水的3-7wt%;或者冷冻干燥为复合菌干粉剂后投加,干粉剂投加量是待处理污水的0.5-1wt%。
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