CN204310916U - Petrochemical wastewater advanced treatment system - Google Patents
Petrochemical wastewater advanced treatment system Download PDFInfo
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- CN204310916U CN204310916U CN201420721675.0U CN201420721675U CN204310916U CN 204310916 U CN204310916 U CN 204310916U CN 201420721675 U CN201420721675 U CN 201420721675U CN 204310916 U CN204310916 U CN 204310916U
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 18
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- 239000000126 substance Substances 0.000 abstract description 14
- 239000010842 industrial wastewater Substances 0.000 abstract description 3
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
技术领域technical field
本实用新型涉及石化废水处理系统，尤其涉及一种石化废水深度处理系统。The utility model relates to a petrochemical wastewater treatment system, in particular to a petrochemical wastewater advanced treatment system.
背景技术Background technique
节约水资源、保护水资源是国家当前急需重视的突出问题。近年来，我国石油化工工业快速发展，其生产废水的排放量也随之逐年增加。对石化工业废水进行深度处理后回用，不仅可以减少污水对环境的污染，还可以降低用水成本，提高工业用水的重复利用率，从而减缓工业用水的紧张局面。因此，采用适宜的技术对石化废水进行深度处理达到回用要求，不但对保护环境有着重大的意义，而且对石化企业的节能减排工作具有指导意义。Saving water resources and protecting water resources are outstanding issues that the country needs to pay attention to urgently. In recent years, with the rapid development of my country's petrochemical industry, the discharge of production wastewater has also increased year by year. The reuse of petrochemical industrial wastewater after advanced treatment can not only reduce the pollution of sewage to the environment, but also reduce the cost of water use and increase the reuse rate of industrial water, thereby alleviating the tension of industrial water use. Therefore, adopting appropriate technology to carry out advanced treatment of petrochemical wastewater to meet the requirements of reuse is not only of great significance to the protection of the environment, but also has guiding significance for the energy-saving and emission-reduction work of petrochemical enterprises.
石化废水主要由石油开采和炼制过程中产生的含各种无机盐和有机物的废水组成，其含有油、氨、盐和酚等污染物，成分复杂，处理难度较大。经二级生化处理后，绝大部分悬浮固体和有机物被去除，出水COD浓度相对较低，但仍具有成分复杂、特征污染物较多、可生化性较差、悬浮物较少的特点。目前，石化废水深度处理工艺有物化法、化学法和生化法：Petrochemical wastewater is mainly composed of wastewater containing various inorganic salts and organic matter produced in the process of petroleum extraction and refining. It contains pollutants such as oil, ammonia, salt, and phenol. The composition is complex and difficult to treat. After the secondary biochemical treatment, most of the suspended solids and organic matter are removed, and the COD concentration of the effluent is relatively low, but it still has the characteristics of complex components, more characteristic pollutants, poor biodegradability, and less suspended matter. At present, there are physical and chemical methods, chemical methods and biochemical methods for the advanced treatment of petrochemical wastewater:
物化法处理技术主要有吸附法和膜分离，其中吸附常与臭氧氧化或絮凝联用，膜分离技术主要包括微滤、超滤、纳滤和反渗透等几类方法。物化法操作最简单的，但是该类处理技术处理成本较高；活性碳吸附虽然效果好，但是连续运行成本较高，且容易造成二次污染。目前的吸附材料和膜材料的制作成本制约了相关技术的应用。Physicochemical treatment technologies mainly include adsorption and membrane separation. Adsorption is often combined with ozone oxidation or flocculation. Membrane separation technologies mainly include microfiltration, ultrafiltration, nanofiltration and reverse osmosis. Physicochemical method is the easiest to operate, but the treatment cost of this type of treatment technology is high; although the effect of activated carbon adsorption is good, the cost of continuous operation is high, and it is easy to cause secondary pollution. The production cost of current adsorption materials and membrane materials restricts the application of related technologies.
化学法主要有化学絮凝、臭氧氧化、光氧化、湿式氧化等，是运行较快、处理效果较好的处理方法。其中化学絮凝可降低污水的浊度和色度，除去多种高分子物质、有机物、某种重金属等，通常需与气浮或沉淀联用，但有机絮凝剂的使用会增加出水的COD，会对处理效果产生负面影响；臭氧氧化和光氧化、湿式氧化等方法虽然能够有效地去除废水色度、臭味和COD等，但处理成本较高。且处理的水量有很大限制；当废水量较大时，臭氧曝气的量就会迅速增加处理成本。Chemical methods mainly include chemical flocculation, ozone oxidation, photooxidation, wet oxidation, etc., which are faster and more effective treatment methods. Among them, chemical flocculation can reduce the turbidity and color of sewage, remove various polymer substances, organic matter, certain heavy metals, etc., and usually need to be used in combination with air flotation or sedimentation, but the use of organic flocculants will increase the COD of the effluent, which will It has a negative impact on the treatment effect; although methods such as ozone oxidation, photooxidation, and wet oxidation can effectively remove the color, odor, and COD of wastewater, the treatment cost is relatively high. And the amount of treated water is very limited; when the amount of wastewater is large, the amount of ozone aeration will rapidly increase the cost of treatment.
生物处理法具有效率高、效果好、处理量大、适用范围广和成本低等优点，单独采用生物工艺很难再使二级生物处理后的废水进行深度处理，而且增加总体设计成本，占地面积较大。另外生物处理法的运行周期长，没有化学法处理的迅速彻底。一般在深度处理方面多采用的是复合生物联合工艺，将物化法与生物处理工艺相联合的方法。The biological treatment method has the advantages of high efficiency, good effect, large treatment capacity, wide application range and low cost. It is difficult to further treat the wastewater after secondary biological treatment by using biological technology alone, and it increases the overall design cost and occupies an area of Larger area. In addition, the operating cycle of biological treatment is long, and it is not as fast and thorough as chemical treatment. Generally, in the aspect of advanced treatment, compound biological combined process is often used, which combines physical and chemical methods with biological treatment processes.
此外，为了达到良好的处理效果，目前采用复合生物联合工艺的石化废水深度处理系统组成均比较复杂，需要设置二沉池和污泥回流装置等设施，生产成本居高不下的同时还给生产施工以及运营管理带来了不便。In addition, in order to achieve a good treatment effect, the composition of the petrochemical wastewater advanced treatment system currently using the combined biological process is relatively complicated, and facilities such as secondary sedimentation tanks and sludge return devices need to be installed, and the production cost remains high. And operational management has brought inconvenience.
实用新型内容Utility model content
本实用新型的目的在于克服上述现有技术中存在的系统组成复杂等不足，提供一种新型的石化废水深度处理系统。本实用新型的系统结构简单、占地面积小、运行管理方便；同时能对石化废水二级出水进行深度处理至达到回用要求。The purpose of the utility model is to overcome the disadvantages of complex system composition in the above-mentioned prior art, and provide a new type of petrochemical wastewater advanced treatment system. The system of the utility model has the advantages of simple structure, small occupied area, and convenient operation and management; at the same time, it can carry out advanced treatment on the secondary effluent of petrochemical wastewater to meet the requirement of reuse.
本实用新型的目的是通过下述技术方案得以解决的：The purpose of this utility model is solved by the following technical solutions:
本实用新型涉及一种石化废水深度处理系统，所述系统包括依次连接的氧化塔、过渡槽、曝气生物滤池、无阀滤池和回用水池；所述曝气生物滤池侧下部(靠近底部的位置)设有气水联合进口，所述气水联合进口分别与曝气鼓风机、气水反冲洗装置相连通，所述曝气生物滤池设有反冲出水口。The utility model relates to a petrochemical wastewater advanced treatment system, the system includes an oxidation tower, a transition tank, an aerated biological filter, a valveless filter and a reuse pool connected in sequence; the side lower part of the aerated biological filter ( The position near the bottom) is provided with an air-water joint inlet, and the air-water joint inlet is respectively connected with the aeration blower and the air-water backwashing device, and the biological aerated filter is provided with a backwash water outlet.
作为优选方案，所述气水反冲洗装置包括气反冲洗通路与水反冲洗通路；所述气反冲洗通路包括反冲洗风机以及气反冲洗管道，所述水反冲洗通路包括反冲洗水泵以及水反冲洗管道，所述气反冲洗管道与气水联合进口相连通，水反冲洗管道连接在回用水池与气水联合进口之间；反冲洗风机位于气反冲洗管道的通路上，反冲洗水泵位于水反冲洗管道的通路上。As a preferred solution, the air-water backwashing device includes an air backwashing passage and a water backwashing passage; the air backwashing passage includes a backwashing fan and an air backwashing pipeline, and the water backwashing passage includes a backwashing pump and a water Backwash pipeline, the air backwash pipeline is connected with the air-water joint inlet, the water backwash pipeline is connected between the reuse pool and the air-water joint inlet; the backwash fan is located on the passage of the air backwash pipeline, and the backwash water pump Located in the path of the water backwash piping.
作为优选方案，所述曝气生物滤池的反冲出水口经反冲洗出水管与厂区集水池相连通。As a preferred solution, the backwash outlet of the biological aerated filter is connected to the water collection tank in the factory area through the backwash outlet pipe.
作为优选方案，所述氧化塔侧下方设有氧化剂投加口。As a preferred solution, an oxidant feeding port is provided below the side of the oxidation tower.
作为优选方案，所述氧化剂投加口由臭氧投加口与双氧水投加口组成。As a preferred solution, the oxidant feeding port is composed of an ozone feeding port and a hydrogen peroxide feeding port.
作为优选方案，所述氧化塔与氧化剂投加口同侧的上部设有进水口，所述进水口通过进水管道、提升泵与石化废水二级出水口相连通；所述氧化塔与氧化剂投加口异侧的下部设有出水口，所述出水口通过管道与过渡槽上部的进口相连通。As a preferred solution, the oxidation tower is provided with a water inlet on the same side as the oxidant feeding port, and the water inlet is connected with the petrochemical wastewater secondary outlet through a water inlet pipe and a lift pump; the oxidation tower is connected to the oxidant feeding port. A water outlet is provided at the lower part on the opposite side of the inlet, and the water outlet communicates with the inlet on the upper part of the transition tank through a pipeline.
作为优选方案，所述过渡槽内设有与所述曝气鼓风机相连通的曝气管道；所述曝气管道口设于过渡槽中下部。As a preferred solution, an aeration pipeline connected with the aeration blower is arranged in the transition tank; the opening of the aeration pipeline is arranged in the middle and lower part of the transition tank.
作为优选方案，所述系统还包括与回用水池相连通的回提升泵。As a preferred solution, the system further includes a return lift pump communicated with the reuse water pool.
作为优选方案，所述氧化塔与过渡槽通过管道连接，所述曝气生物滤池、无阀滤池和回用水池依次通过管道连接，所述过渡槽与曝气生物滤池贴合设置，所述过渡槽与曝气生物滤池贴合设置，所述过渡槽出水通过底部开孔进入曝气生物滤池底部。As a preferred solution, the oxidation tower is connected to the transition tank through pipelines, and the biological aerated filter, the valveless filter and the reuse water tank are connected through pipelines in sequence, and the transition tank and the biological aerated filter are attached to each other. The transition tank is arranged in close contact with the biological aerated filter, and the outlet water of the transition tank enters the bottom of the biological aerated filter through the bottom opening.
与现有技术相比，本实用新型具有如下有益效果：Compared with the prior art, the utility model has the following beneficial effects:
(1)本实用新型的系统省去了二沉池和污泥回流设施，处理效果好，占地面积小，运行管理方便，在石化企业工业废水深度处理提升或改造中均具有较大优势。(1) The system of the utility model eliminates the secondary settling tank and sludge return facilities, has good treatment effect, small footprint, convenient operation and management, and has great advantages in the upgrading or transformation of industrial wastewater advanced treatment in petrochemical enterprises.
(2)通过在氧化塔侧下方设置氧化剂投加口，实现臭氧和双氧水联合氧化工艺，不但能过去除部分色度，能有效地促进难生物降解物质的去除和B/C的提高，为后续生化处理创造良好的条件；能提高氧化能力，降低运行费用；臭氧氧化和双氧水的反应产物不会增加污水中的盐份。(2) The joint oxidation process of ozone and hydrogen peroxide is realized by setting the oxidant dosing port under the side of the oxidation tower, which can not only remove part of the chroma, but also effectively promote the removal of refractory biodegradable substances and the improvement of B/C. Biochemical treatment creates good conditions; it can improve oxidation capacity and reduce operating costs; the reaction product of ozone oxidation and hydrogen peroxide will not increase the salt content in sewage.
(3)通过设置过渡槽以及在过渡槽内设置曝气管道，使得氧化塔出水中残留的少量臭氧得以在过渡槽内通空气吹脱分解掉，再进入曝气生物滤池，提高了处理效率。(3) By setting transition tanks and aeration pipes in the transition tanks, a small amount of ozone remaining in the oxidation tower effluent can be blown off and decomposed by air in the transition tanks, and then enter the biological aerated filter, improving the treatment efficiency .
(4)通过在曝气生物滤池侧下方设置气水反冲洗装置，实现反冲洗气水由池底向上流动，同时采用强制鼓风曝气，使得气、水进行极好的均分，防止了气泡在滤料中的凝结，氧气利用率高，能耗低；充分实现了污染物质、溶解氧及生物体的浓缩及高效接触，进一步促使难降解物质的分解。(4) By installing an air-water backwashing device under the side of the biological aerated filter, the backwashing air and water flow upward from the bottom of the tank, and at the same time, forced air blowing is used to aerate, so that the air and water are evenly divided, preventing The condensation of air bubbles in the filter material is prevented, the oxygen utilization rate is high, and the energy consumption is low; the concentration and efficient contact of pollutants, dissolved oxygen and organisms are fully realized, and the decomposition of refractory substances is further promoted.
附图说明Description of drawings
通过阅读参照以下附图对非限制性实施例所作的详细描述，本实用新型的其他特征、目的和优点将会变得更明显：Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
图1为本实用新型的流程示意图；Fig. 1 is the schematic flow sheet of the utility model;
其中，1为氧化塔，2为过渡槽，3为曝气生物滤池，4为无阀滤池，5为回用水池，6为提升泵，7为氧化剂投加口，8为曝气鼓风机，9为反冲洗水泵，10为反冲洗风机，11为回提升泵。Among them, 1 is the oxidation tower, 2 is the transition tank, 3 is the biological aerated filter, 4 is the valveless filter, 5 is the reuse water tank, 6 is the lifting pump, 7 is the oxidant feeding port, and 8 is the aeration blower , 9 is a backwash water pump, 10 is a backwash blower fan, and 11 is a return lift pump.
具体实施方式Detailed ways
下面结合具体实施例对本实用新型进行详细说明。以下是实施例将有助于本领域的技术人员进一步理解本实用新型，但不以任何形式限制本实用新型。应当指出的是，对本领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干变形和改进。这些都属于本实用新型的保护范围。The utility model is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present utility model. These all belong to the protection domain of the present utility model.
实施例Example
本实施例的石化废水深度处理系统的结构示意图如图1所示；所述系统包括氧化塔1、过渡槽2、曝气生物滤池3、无阀滤池4和回用水池5。所述氧化塔1与过渡槽2通过管道连接，所述曝气生物滤池3、无阀滤池4和回用水池5依次通过管道连接，所述过渡槽2与曝气生物滤池3贴合设置，所述过渡槽出水通过底部开孔进入曝气生物滤池底部。所述曝气生物滤池3侧下方(靠近底部的位置)设有气水联合进口，所述气水联合进口分别与曝气鼓风机8、气水反冲洗装置相连通，所述曝气生物滤池3设有反冲出水口。所述气水反冲洗装置包括气反冲洗通路与水反冲洗通路；所述气反冲洗通路包括反冲洗风机10以及气反冲洗管道，所述水反冲洗通路包括与回用水池5相连通的反冲洗水泵9以及水反冲洗管道，所述气反冲洗管道、水反冲洗管道与气水联合进口相连通。所述曝气生物滤池3的反冲出水口经反冲洗出水管与厂区集水池相连通。所述氧化塔1侧下方设有氧化剂投加口7。该氧化剂投加口7可以是单口，可与臭氧输送管道或双氧水输送管道连接。作为优选方案，该氧化剂投加口7为双口，由上方的臭氧投加口与下方的双氧水投加口组成，所述臭氧投加口与臭氧输送管道，所述双氧水投加口与双氧水输送管道连接。所述氧化塔1与氧化剂投加口7同侧上方设有进水口，所述进水口通过进水管道、提升泵6与二级出水相连通；所述氧化塔1与氧化剂投加口7异侧下方设有出水口，所述出水口通过管道与过渡槽2上方的进口相连通。所述过渡槽2内设有与所述曝气鼓风机8相连通的曝气管道；所述曝气管道口设于过渡槽2中下部。本实施例的系统还包括与回用水池5相连通的回提升泵11；利用回用提升泵11提升进行回用。The structure schematic diagram of the petrochemical wastewater advanced treatment system in this embodiment is shown in Fig. 1; The oxidation tower 1 is connected to the transition tank 2 through pipelines, the biological aerated filter 3, the valveless filter 4 and the reuse water tank 5 are connected through pipelines in turn, and the transition tank 2 is connected to the biological aerated filter 3 combined arrangement, the effluent from the transition tank enters the bottom of the biological aerated filter through the bottom opening. The lower side of the biological aerated filter 3 (position near the bottom) is provided with an air-water joint inlet, and the air-water joint inlet is respectively connected with the aeration blower 8 and the air-water backwashing device. Pool 3 is provided with a recoil water outlet. The air-water backwashing device includes an air backwash passage and a water backwash passage; the air backwash passage includes a backwash fan 10 and an air backwash pipeline, and the water backwash passage includes a The backwashing water pump 9 and the water backwashing pipeline, the gas backwashing pipeline and the water backwashing pipeline communicate with the air-water joint inlet. The backwash water outlet of the biological aerated filter 3 is connected with the water collection tank in the factory area through the backwash water outlet pipe. An oxidant feeding port 7 is provided below the side of the oxidation tower 1 . The oxidant feeding port 7 can be a single port, and can be connected with an ozone delivery pipeline or a hydrogen peroxide delivery pipeline. As a preferred solution, the oxidant dosing port 7 is a double port, consisting of an upper ozone dosing port and a lower hydrogen peroxide dosing port, the ozone dosing port and the ozone delivery pipeline, the hydrogen peroxide dosing port and the hydrogen peroxide delivery plumbing connections. The oxidation tower 1 is provided with a water inlet above the same side as the oxidant feeding port 7, and the water inlet is connected with the secondary outlet water through the water inlet pipe and the lifting pump 6; the oxidation tower 1 is different from the oxidant feeding port 7 A water outlet is provided on the lower side, and the water outlet communicates with the inlet above the transition tank 2 through a pipe. An aeration pipeline connected with the aeration blower 8 is arranged in the transition tank 2 ; The system of this embodiment also includes a recycling lift pump 11 connected to the recycling pool 5; the recycling lifting pump 11 is used to lift for recycling.
本实用新型的石化废水深度处理系统对石化废水进行深度处理的原理为：The principle of advanced treatment of petrochemical wastewater by the petrochemical wastewater advanced treatment system of the utility model is as follows:
二级出水通过提升泵6进入氧化塔1，与通过氧化剂投加口7通入的臭氧和投加的双氧水联合氧化下，去除部分COD和脱色。同时，污水中不易生物氧化的有机污染物在臭氧的强氧化分解作用下，转变成可生物降解和易生物降解的有机物，提高废水的B/C，为后续的曝气生物滤运作创造有利条件。The secondary effluent enters the oxidation tower 1 through the lift pump 6, and is jointly oxidized with the ozone fed through the oxidant feeding port 7 and the added hydrogen peroxide to remove part of COD and decolorize. At the same time, under the strong oxidation and decomposition of ozone, organic pollutants that are not easily biooxidized in sewage are transformed into biodegradable and easily biodegradable organic matter, which improves the B/C of wastewater and creates favorable conditions for the subsequent operation of biological aerated filtration .
氧化塔1出水由于残留少量臭氧，在过渡槽2内通空气吹脱分解掉，再进入曝气生物滤池3。经过曝气生物滤池3底部的配水系统由池底向上流动，同时采用强制鼓风曝气(由曝气鼓风机8提供)，使得气、水进行极好的均分，防止了气泡在滤料中的凝结，氧气利用率高，能耗低；采用气水平行上向流，使交间过滤能被更好地运用，空气能将污水中的固体物质带入滤床深处，在滤池中能得到高负荷、均匀的固体物质，延长反冲洗周期，减少清洗时间和清洗时的水、气量。曝气生物滤池3将微生物、溶解氧、有机污染物吸附/过滤/生物降解，从而大大削减难降解有机物质的去除，进一步的去除COD和氨氮。同时能通过吸附铁、碳酸钙的形式，大大降低水中的铁含量和废水硬度。The effluent from oxidation tower 1 is blown off and decomposed by air in transition tank 2 due to a small amount of residual ozone, and then enters biological aerated filter tank 3 . The water distribution system at the bottom of the biological aerated filter 3 flows upward from the bottom of the tank, and at the same time, forced air aeration (provided by the aeration blower 8) is used to make the air and water evenly distributed, preventing air bubbles from entering the filter material. Condensation in the medium, high oxygen utilization rate, low energy consumption; the use of air-level upward flow, so that the inter-filter can be better used, the air can bring the solid matter in the sewage into the depth of the filter bed, in the filter High-load, uniform solid matter can be obtained in medium, prolong the backwash cycle, reduce the cleaning time and the amount of water and air during cleaning. The biological aerated filter 3 absorbs/filters/biodegrades microorganisms, dissolved oxygen, and organic pollutants, thereby greatly reducing the removal of refractory organic substances and further removing COD and ammonia nitrogen. At the same time, it can greatly reduce the iron content in water and the hardness of wastewater by adsorbing iron and calcium carbonate.
曝气生物滤池3采用气水联合反冲洗，在回用水池5内设反冲洗水泵9，采用曝气生物滤池3出水即回用水池5内水作为反冲洗水源；设置曝气风机8及反冲洗风机10。反冲洗排水通过反冲洗出水口、厂区污水管自流进入废水处理系统的沉淀处理单元。The biological aerated filter 3 adopts air-water combined backwashing, and a backwashing water pump 9 is installed in the reuse water tank 5, and the water from the biological aerated filter 3, that is, the water in the reuse pool 5, is used as the backwash water source; an aeration fan 8 is set And backwash fan 10. The backwash drainage flows into the sedimentation treatment unit of the wastewater treatment system through the backwash outlet and the sewage pipe in the factory area.
曝气生物滤池3出水重力流入无阀滤池4，进一步去除有机物和悬浮物，保证出水水质，重力流入至回用水池5，用回提升泵11提升至回用处进行回用。The effluent from the biological aerated filter 3 flows into the valveless filter 4 by gravity to further remove organic matter and suspended matter to ensure the quality of the effluent, then flows into the reuse pool 5 by gravity, and is lifted to the reuse place by the lift pump 11 for reuse.
将本实施例的石化废水深度处理系统应用处理某家化工企业的废水，具体工艺如下：The petrochemical wastewater advanced treatment system of this embodiment is applied to treat the wastewater of a certain chemical enterprise. The specific process is as follows:
石化废水二级出水采用提升泵6至氧化塔1，在氧化塔的氧化剂投加口7投入臭氧和双氧水，反应后出水流入过渡槽2。The secondary effluent of petrochemical wastewater is sent to the oxidation tower 1 by the lift pump 6, and ozone and hydrogen peroxide are put into the oxidant dosing port 7 of the oxidation tower, and the effluent flows into the transition tank 2 after the reaction.
过渡槽2的池上方通过曝气鼓风机8伸入曝气管道，吹脱分解掉废水残留的少量臭氧，出水流入曝气生物滤池3。通过曝气鼓风机8输送空气至曝气生物滤池3。通过回用水池5内所设的反冲洗水泵9输送反冲洗水至曝气生物滤池3，设置反冲洗风机10输送空气至曝气生物滤池3，进行气水反冲洗。曝气生物滤池3设有反冲洗出水口，输送反冲洗出水经反冲洗出水管至厂区集水池。The top of the pool of the transition tank 2 extends into the aeration pipeline through the aeration blower 8 to blow off and decompose a small amount of ozone left in the waste water, and the effluent flows into the biological aerated filter 3 . The air is sent to the biological aerated filter 3 by the aeration blower 8 . The backwash water pump 9 provided in the reuse pool 5 delivers the backwash water to the biological aerated filter 3 , and the backwash fan 10 is set to deliver air to the biological aerated filter 3 for air-water backwashing. The biological aerated filter 3 is provided with a backwash outlet, and the backwash effluent is delivered to the factory area sump through the backwash outlet pipe.
实施结果：该家化工企业的废水进水水质COD为120mg/L、铁0.85mg/L、色度40倍，出水可分别达到COD为54mg/L、铁0.10mg/L、色度10倍。Implementation results: The influent COD of this chemical company's wastewater is 120mg/L, iron 0.85mg/L, and chroma 40 times, and the effluent can respectively reach COD 54mg/L, iron 0.10mg/L, and chroma 10 times.
以上对本实用新型的具体实施例进行了描述。需要理解的是，本实用新型并不局限于上述特定实施方式，本领域技术人员可以在权利要求的范围内做出各种变形或修改，这并不影响本实用新型的实质内容。The specific embodiments of the present utility model have been described above. It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the utility model.
Claims (9)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104909499A (en) * | 2015-06-10 | 2015-09-16 | 上海化学工业区中法水务发展有限公司 | Petrochemical wastewater secondary effluent treatment method |
| CN111302477A (en) * | 2018-12-12 | 2020-06-19 | 中蓝连海设计研究院有限公司 | Device and method for advanced treatment of secondary biochemical effluent of petrochemical wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104909499A (en) * | 2015-06-10 | 2015-09-16 | 上海化学工业区中法水务发展有限公司 | Petrochemical wastewater secondary effluent treatment method |
| CN111302477A (en) * | 2018-12-12 | 2020-06-19 | 中蓝连海设计研究院有限公司 | Device and method for advanced treatment of secondary biochemical effluent of petrochemical wastewater |
| CN111302477B (en) * | 2018-12-12 | 2022-03-18 | 中蓝连海设计研究院有限公司 | Device and method for advanced treatment of secondary biochemical effluent of petrochemical wastewater |
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