CN102627375A - Integrated treatment method and integrated treatment device for polluted river and lake water - Google Patents
Integrated treatment method and integrated treatment device for polluted river and lake water Download PDFInfo
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Abstract
Description
技术领域 technical field
本发明涉及一种受污染河湖水集成处理技术及其处理装置,属于污水处理领域。The invention relates to an integrated treatment technology for polluted river and lake water and a treatment device thereof, belonging to the field of sewage treatment.
背景技术 Background technique
近年来,河湖水体富营养化事件在我国频繁发生,氮、磷是富营养化的主要元素,为此国家出台了更为严格的地表水标准。最新的《国家地表水环境质量标准GB3838-2002》规定,IV类水体排放标准为CODCr≤30mg/L、NH3-N≤1.5mg/L、总磷≤0.3mg/L。由于河湖沿岸的污水排放使地表水体污染愈加严重,保持河湖水质达标的压力也越来越大。因此,通过将磁混凝处理技术与碳纤维生态草(碳纤维束)水处理方法连用,开发新型处理装置,达到净化水质、抑制河湖水体富营养化趋势的目的。该技术在实际应用中具有占地面积小、处理水质好,处理成本低廉等优点。In recent years, eutrophication events in rivers and lakes have occurred frequently in my country. Nitrogen and phosphorus are the main elements of eutrophication. For this reason, the country has introduced more stringent surface water standards. The latest "National Surface Water Environmental Quality Standard GB3838-2002" stipulates that the discharge standards for Class IV water bodies are COD Cr ≤30mg/L, NH 3 -N ≤1.5mg/L, and total phosphorus ≤0.3mg/L. The pressure to keep the water quality of rivers and lakes up to standard is also increasing due to the pollution of surface water bodies due to the discharge of sewage along the rivers and lakes. Therefore, by combining the magnetic coagulation treatment technology with the carbon fiber ecological grass (carbon fiber bundle) water treatment method, a new treatment device is developed to achieve the purpose of purifying water quality and inhibiting the eutrophication trend of river and lake water. In practical application, this technology has the advantages of small footprint, good water quality and low treatment cost.
磁混凝处理技术与碳纤维生态草水处理方法连用属于新型的河湖水处理技术。由于现阶段我国河湖水体的污染问题越来越严重,加上传统物化处理手段和现有生物处理装置能耗高,建设成本高昂,迫切需要新型高效、节能、占地面积较小的处理装置、以及相关工艺技术的研究开发。因此,该技术的发明可为水体污染控制领域提供一种实用、高效、节能、可用的新研究方向。The combination of magnetic coagulation treatment technology and carbon fiber ecological grass water treatment method is a new river and lake water treatment technology. Due to the fact that the pollution of rivers and lakes in my country is becoming more and more serious at this stage, coupled with the high energy consumption and high construction costs of traditional physical and chemical treatment methods and existing biological treatment equipment, there is an urgent need for new high-efficiency, energy-saving, and small-occupied treatment equipment. , and related technology research and development. Therefore, the invention of this technology can provide a practical, efficient, energy-saving and usable new research direction in the field of water pollution control.
发明内容 Contents of the invention
本发明将磁粉投加入混凝过程中,可以使絮体包裹更加严密,絮体沉降速率更快,可以有效改善传统混凝过程对河湖水体中悬浮物质和磷类污染物的去除效果,也能改善水体的感官指标;碳纤维生态草水处理装置微生物挂膜速度快,能够很快达到稳定工作状态,使出水达标。将二者连用,可以有效的实现受污染河湖水中有机物降解、脱氮除磷和改善感官指标的水质净化目标。In the present invention, the magnetic powder is added into the coagulation process, which can make the floc wrap more tightly, and the floc sedimentation rate is faster, and can effectively improve the removal effect of the traditional coagulation process on suspended matter and phosphorus pollutants in river and lake water, and also It can improve the sensory indicators of the water body; the carbon fiber ecological grass water treatment device has a fast microbial film formation, and can quickly reach a stable working state to make the effluent meet the standard. The combination of the two can effectively achieve the water quality purification goals of degradation of organic matter, denitrification and phosphorus removal and improvement of sensory indicators in polluted river and lake water.
受污染河湖水集成处理装置包括:进水管1、混合池2、絮凝池3、沉淀池4、絮凝剂溶药池5、磁粉投加装置6、助凝剂溶药池7、污泥回流管8、磁分离器9、磁粉回收管10、进水池11、进水泵12、缺氧池13、好氧池14:需串联至少2个池、空压机15、空气流量计16、出水池17和混合液回流泵18。装置特征在于:絮凝剂溶药池5通过进水管1与混合池2连接;混合池2安装有搅拌桨,通过闸口与絮凝池3连接;磁分离器9与磁粉回收管10、磁粉投加装置6连接,磁粉投加装置6安装在混合池2的前端上部;助凝剂溶药池7与絮凝池3连接;絮凝池3安装有搅拌桨,通过池壁闸板与沉淀池4连接;沉淀池4底部安装污泥回流泵,并与污泥回流管8、磁分离器9连接;沉淀池4与进水池11连接,进水池11通过进水泵12与缺氧池13相连;缺氧池13连接混合液回流管,内部自上而下布置碳纤维生态草,通过底部闸板与好氧池14连接;好氧池14内部自上而下布置碳纤维生态草,与设在好氧池外空压机15和空气流量计16连接;好氧池14串联2个以上好氧池,并连接有混合液回流管,混合液回流管通过混合液回流泵18与缺氧池13的混合液回流管相连;好氧池14与出水池17连接。The integrated treatment device for polluted river and lake water includes:
反应装置工作方式:絮凝剂溶药池5中的絮凝剂和助凝剂溶药池7中的助凝剂分别投入混合池2与絮凝池3,投加量以混凝工艺出水达到地表水环境质量标准GB3838-2002中的V类为准;混合池2中的磁粉浓度不低于150mg/L;磁絮体混合液流入沉淀池4,磁絮体快速沉淀后经污泥回流并通过磁分离器9回收磁粉,并重新进入磁粉投加装置6;沉淀池4中经沉淀后上清液流入进水池11,通过进水泵12将上清液提升至缺氧池13;缺氧池13内的反硝化菌可同时去碳脱氮;污水重力自流进入好氧池14,其中的自养型硝化细菌在溶解氧充足的条件下实现脱氮的目的,具备有机物降解能力的微生物实现去除有机物的目的;好氧池14将一部分混合液回流至缺氧池13,并与出水池17相连。The working mode of the reaction device: the flocculant in the flocculant dissolving tank 5 and the coagulant aid in the
受污染河湖水集成处理方法和装置可用于改进现有的受污染的河湖水物化和生化处理工艺。经该技术处理过的河湖水,其悬浮物、生化需氧量、氮和磷的浓度都较低,出水感官指标大幅改善。由于磁粉的投入使混凝产生的絮体更加密实,沉淀速率更快,单位时间内的储量大幅提升,节省了装置占地面积;碳纤维生态草用于现有污水处理厂的升级改造,且由于不需设置污泥处理装置,可以大大降低了基建成本。The integrated treatment method and device for polluted river and lake water can be used to improve the existing physicochemical and biochemical treatment processes for polluted river and lake water. The river and lake water treated by this technology has lower concentrations of suspended solids, biochemical oxygen demand, nitrogen and phosphorus, and the sensory indicators of the effluent have been greatly improved. Due to the input of magnetic powder, the flocs produced by coagulation are denser, the sedimentation rate is faster, and the reserves per unit time are greatly increased, which saves the area of the device; the carbon fiber ecological grass is used for the upgrading of the existing sewage treatment plant, and because There is no need to set up a sludge treatment device, which can greatly reduce the cost of infrastructure.
附图说明 Description of drawings
图1是本发明一中受污染河湖水集成处理方法和装置原理图。Fig. 1 is a schematic diagram of an integrated treatment method and device for polluted river and lake water in the present invention.
图中:1进水管、2混合池、3絮凝池、4沉淀池、5絮凝剂溶药池、6磁粉投加装置、7助凝剂溶药池、8污泥回流管、9磁分离器、10磁粉回收管、11进水池、12进水泵、13缺氧池、14好氧池:需串联至少2个池、15空压机、16空气流量计、17出水池和18混合液回流泵。In the figure: 1 water inlet pipe, 2 mixing tank, 3 flocculation tank, 4 sedimentation tank, 5 flocculant dissolving tank, 6 magnetic powder dosing device, 7 coagulant dissolving tank, 8 sludge return pipe, 9 magnetic separator , 10 magnetic powder recovery pipe, 11 water inlet pool, 12 water inlet pump, 13 anoxic pool, 14 aerobic pool: at least 2 pools need to be connected in series, 15 air compressor, 16 air flow meter, 17 water outlet pool and 18 mixed liquid return pump .
具体实施方式 Detailed ways
反应装置工作方式:絮凝剂溶药池5中的絮凝剂和助凝剂溶药池7中的助凝剂分别投入混合池2与絮凝池3,投加量以混凝工艺出水达到地表水环境质量标准GB3838-2002中的V类为准;磁粉投加装置6与磁分离器9中回收的磁粉投入混合池2,磁粉浓度保持不低于150mg/L。混合池2中的搅拌作用实现磁粉与絮凝剂的充分混合后,经闸口流入絮凝池3;助凝剂溶药池7中的助凝剂与混合池2中流入的污水在絮凝池3中搅拌作用下实现充分混合凝聚,形成以磁粉为凝聚核心的磁絮体;磁絮体混合液经闸口流入沉淀池4,磁絮体快速沉淀后经潜水污泥回流泵通过污泥回流管8进入磁分离器9进行磁粉分离回收,回收的磁粉经磁粉回收管10重新进入磁粉投加装置6;沉淀池4中经沉淀后产生的上清液通过潜水泵与管道流入进水池11,通过进水泵12将磁絮凝出水提升至缺氧池13;缺氧池13的溶解氧含量低于1mg/L,其内的反硝化菌利用水中的有机物和回流混合液中的硝酸盐进行反硝化,可同时去碳脱氮;缺氧池13通过底部闸口与好氧池14相连,水重力自流进入好氧池;污水进入好氧池14时,其中的溶解氧含量不低于3mg/L,使自养型硝化细菌在溶解氧充足的条件下将氨氮转化为硝酸盐氮,实现脱氮的目的;同时具备有机物降解能力的微生物消耗掉原水中的碳源实现去除有机物的目的;好氧池14通过混合液回流泵18与缺氧池13连接,将一部分混合液回流至缺氧池13,混合液回流比在50%~300%之间;好氧池14通过出水管与出水池17相连,将处理后的出水排放到下水道内或河湖。The working mode of the reaction device: the flocculant in the flocculant dissolving tank 5 and the coagulant aid in the
原水水质采用北京市通惠河水,水质如下:浊度3~6NTU、COD40~60mg/L、NH3-N 2~6mg/L、总磷1左右。经过该反应器处理,出水浊度小于0.5NTU,去除率为80%以上;COD含量为4~6mg/L,去除率为90%以上;NH3-N含量为小于0.1mg/L,去除率为95%以上;出水总磷小于0.1mg/L,去除率为90%以上。出水COD、氨氮、总磷均满足《国家地表水环境质量标准GB3838-2002》IV类水体排放标准,碳纤维生态草河湖水处理装置处理河湖水能取得较好的脱氮效果,该发明已应用于城市河湖水处理。The raw water quality is Tonghui River water in Beijing. The water quality is as follows: Turbidity 3-6NTU, COD40-60mg/L, NH 3 -N 2-6mg/L, total phosphorus about 1. After the reactor treatment, the effluent turbidity is less than 0.5NTU, the removal rate is over 80%; the COD content is 4-6mg/L, the removal rate is over 90%; the NH 3 -N content is less than 0.1mg/L, the removal rate It is above 95%; the total phosphorus in the effluent is less than 0.1mg/L, and the removal rate is above 90%. The effluent COD, ammonia nitrogen, and total phosphorus all meet the Class IV water body discharge standard of the "National Surface Water Environmental Quality Standard GB3838-2002". Urban river and lake water treatment.
本装置适合现有水处理厂脱氮除磷升级改造和新建处理厂。本处理装置具有节省占地面积、提高处理能力等特点。This device is suitable for the upgrading and transformation of existing water treatment plants for denitrification and phosphorus removal and new treatment plants. The processing device has the characteristics of saving floor space, improving processing capacity, and the like.
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CN111320335A (en) * | 2020-04-02 | 2020-06-23 | 安徽省通源环境节能股份有限公司 | Sewage purification device and purification method |
CN114620872A (en) * | 2022-04-19 | 2022-06-14 | 哈尔滨工业大学 | Advanced sewage treatment device and method for synchronously removing pollutants and sterilizing |
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