CN104118967B - A kind of air water anisotropic flow electricity biological coupling water cleaning systems and process for purifying water - Google Patents
A kind of air water anisotropic flow electricity biological coupling water cleaning systems and process for purifying water Download PDFInfo
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Abstract
本发明公开了一种气水异向流电生物耦合净水系统及净水方法。异向流电生物耦合净水系统的生物滤料层位于三维粒子电极层下部，三维粒子电极层与生物滤料层通过不锈钢孔板相连接，生物滤料层底部与曝气出水室通过塑料多孔板的形式相连接，曝气出水室接有曝气装置，整个系统的气水异向流动，气体由下而上，水由上而下。本发明的净水方法，包括如下步骤：（1）原水进入配水室；（2）电催化氧化；（3）物理过滤、截留；（4）好氧生物处理去除有机物和氨氮；（5）同时，气体在生物滤料层、三维粒子电极层内与由上而下的污水进行充分的接触；（6）出净水。本发明的净水系统其电催化氧化、好氧生物处理耦合在同一反应器内，气水异向流动，水处理中各个阶段相互协同，并且在电催化氧化、物理过滤、好氧处理的相互作用下，达到预定的处理效果，出水水质稳定。The invention discloses an air-water anisotropic current biological coupling water purification system and a water purification method. The biological filter material layer of the anisotropic current biological coupling water purification system is located at the lower part of the three-dimensional particle electrode layer. The three-dimensional particle electrode layer is connected to the biological filter material layer through a stainless steel orifice plate. The plates are connected in the form of an aeration outlet, and an aeration device is connected to the aeration outlet chamber. The air and water in the whole system flow in opposite directions, the gas is from bottom to top, and the water is from top to bottom. The water purification method of the present invention includes the following steps: (1) raw water enters the water distribution chamber; (2) electrocatalytic oxidation; (3) physical filtration and interception; (4) aerobic biological treatment to remove organic matter and ammonia nitrogen; (5) simultaneously , the gas is in full contact with the sewage from top to bottom in the biological filter material layer and the three-dimensional particle electrode layer; (6) clean water. In the water purification system of the present invention, the electrocatalytic oxidation and aerobic biological treatment are coupled in the same reactor, the air and water flow in opposite directions, and the various stages in the water treatment cooperate with each other, and the interaction between electrocatalytic oxidation, physical filtration and aerobic treatment Under the action, the predetermined treatment effect is achieved, and the effluent water quality is stable.
Description
技术领域 technical field
本发明属于废水处理技术领域，特别是涉及一种可用于污水处理的气水异向流电生物耦合净水系统及净水方法。 The invention belongs to the technical field of waste water treatment, and in particular relates to a gas-water anisotropic current biological coupling water purification system and a water purification method which can be used for sewage treatment.
背景技术 Background technique
随着经济的发展，城市污水中含有的难降解有机物不断增多，一方面以去除有机物及营养物质为目的的传统污水处理工艺不能完全将其去除，造成受纳水体及剩余污泥接收地的污染，进而影响城市水厂水源水和地下水水质；另一方面，常规混凝、沉淀、过滤给水处理工艺对相当一部分物质没有明显的去除效果。因此，开展城市污水处理技术研究，对于控制难降解有机物排放、避免潜在的生态环境危机具有极其重要的意义。 With the development of the economy, the amount of refractory organic matter contained in urban sewage is increasing. On the one hand, the traditional sewage treatment process aimed at removing organic matter and nutrients cannot completely remove them, resulting in pollution of the receiving water body and the receiving area of excess sludge. , and then affect the quality of source water and groundwater in urban water plants; on the other hand, conventional coagulation, sedimentation, and filtration water supply treatment processes have no obvious removal effect on a considerable number of substances. Therefore, it is of great significance to carry out research on urban sewage treatment technology to control the discharge of refractory organic matter and avoid potential ecological and environmental crises.
生物法是目前废水处理中运用最为成熟的工艺之一，但对复杂的有毒有害污染物降解速率缓慢，分解不彻底，更甚者会因中毒而失去相应活性。电化学法可快速高效地将难降解高分子有机物氧化成低分子有机物或矿化成二氧化碳，其处理能力强且操作简单，但存在能耗大，运行费用高等不足。如何将两者有效结合，是目前水处理行业急需解决的一个问题。 Biological method is currently one of the most mature processes used in wastewater treatment, but the degradation rate of complex toxic and harmful pollutants is slow, the decomposition is not complete, and even the corresponding activity will be lost due to poisoning. The electrochemical method can quickly and efficiently oxidize refractory high-molecular-weight organic matter into low-molecular-weight organic matter or mineralize into carbon dioxide. It has strong processing capacity and simple operation, but has the disadvantages of high energy consumption and high operating costs. How to effectively combine the two is a problem that the water treatment industry needs to solve urgently.
发明内容 Contents of the invention
本发明的目的在于解决上述的问题，提供了一种气水异向流电生物耦合净水系统及净水方法。 The object of the present invention is to solve the above-mentioned problems, and provides a water purification system and a water purification method coupled with gas-water anisotropic flow and electricity.
为解决上述问题，本发明包括配水区，异向流电生物耦合池，曝气出水室构成。 In order to solve the above problems, the present invention comprises a water distribution area, an anisotropic current biological coupling pool, and an aeration outlet chamber.
所述的异向流电生物耦合池包括三维粒子电极层和生物滤料层，三维粒子电极层位于生物滤料层上部，三维粒子电极层的上部连通主电极阳极，下部连接主电极阴极，主电极阳极和主电极阴极分别为钛网和不锈钢孔板，由钛网和不锈钢孔板交替平行设置，间隔5-8cm，催化粒子电极填充于主电极之间，三维粒子电极层处理后的水通过不锈钢孔板电极从三维粒子电极层下部进入生物滤料层，生物滤料层底部与承托层连接，承托层通过塑料多孔板与曝气出水室相连通，气水在净水系统中异向流动，气体由下而上，水由上而下。 The anisotropic current bio-coupling pool includes a three-dimensional particle electrode layer and a biological filter material layer, the three-dimensional particle electrode layer is located on the upper part of the biological filter material layer, the upper part of the three-dimensional particle electrode layer is connected to the anode of the main electrode, and the lower part is connected to the cathode of the main electrode. The anode of the electrode and the cathode of the main electrode are respectively titanium mesh and stainless steel orifice plates, which are alternately arranged in parallel with the titanium mesh and stainless steel orifice plates, with an interval of 5-8cm. The catalytic particle electrodes are filled between the main electrodes, and the water treated by the three-dimensional particle electrode layer passes through The stainless steel orifice plate electrode enters the biological filter material layer from the lower part of the three-dimensional particle electrode layer, and the bottom of the biological filter material layer is connected with the supporting layer, and the supporting layer is connected with the aeration water outlet chamber through a plastic porous plate, and the air and water are separated in the water purification system. Direction flow, gas from bottom to top, water from top to bottom.
所述的异向流电生物耦合池为圆柱型，三维粒子电极层和吸生物滤料层直径形同，高度比为3:10，分别装填3-5mm锌铝废渣基粒子电极和3-5mm多孔复合粉煤灰滤料。 The anisotropic current bio-coupling pool is cylindrical, the three-dimensional particle electrode layer and the bio-absorbing filter material layer have the same diameter, and the height ratio is 3:10, respectively filled with 3-5mm zinc-aluminum waste slag-based particle electrodes and 3-5mm Porous composite fly ash filter material.
所述的曝气出水室安装有曝气盘、曝气管、反冲洗进水管、出水管，空气压缩机和曝气管连接，反冲洗水泵和反冲洗进水管连接。 The aeration outlet chamber is equipped with an aeration pan, an aeration pipe, a backwash water inlet pipe, and a water outlet pipe, the air compressor is connected to the aeration pipe, and the backwash water pump is connected to the backwash water inlet pipe.
一种采用上述所述的一种异向流电生物耦合净水方法，包括如下步骤：(1)向高位水箱引入污水，进入配水区；（2）向曝气出水室通入压缩空气，气水体积比为5:1-3：1；（3）污水经过配水区，进入三维粒子电极层，再经过生物滤料层，最后从曝气出水室中流入净水出水管排出（4）同时，气体通过曝气出水室，进入生物滤料层，再经过三维粒子电极层，最后没有利用的气体从配水区逸出；（5）在三维粒子电极层，直流电源通过阳极线、阴极线分别和钛网、不锈钢孔板电极相连，提供0-12V电压，进行电化学反应；（6）运行一段时间后对异向流电生物耦合净水系统进行反冲洗，先气洗3分钟，然后同时水洗和气洗5分钟，再水洗8分钟。 A water purification method using the above-mentioned anisotropic current biological coupling, comprising the following steps: (1) introducing sewage into the high-level water tank and entering the water distribution area; (2) introducing compressed air into the aeration outlet chamber, and the air The water volume ratio is 5:1-3:1; (3) The sewage passes through the water distribution area, enters the three-dimensional particle electrode layer, then passes through the biological filter layer, and finally flows into the clean water outlet pipe from the aeration outlet chamber to be discharged (4) At the same time , the gas enters the biological filter material layer through the aeration outlet chamber, and then passes through the three-dimensional particle electrode layer, and finally the unused gas escapes from the water distribution area; Connect with titanium mesh and stainless steel orifice plate electrodes to provide 0-12V voltage for electrochemical reaction; (6) After running for a period of time, backwash the anisotropic current biological coupling water purification system, first air wash for 3 minutes, and then simultaneously Wash with water and air for 5 minutes, then wash with water for 8 minutes.
本发明的有益效果：污水首选通过电催化降解后，改变污水的水质使其更容易被好氧生物所利用，从而提高整个反应器的处理效果。 Beneficial effects of the present invention: after sewage is first degraded by electrocatalysis, the water quality of sewage can be changed to make it easier to be used by aerobic organisms, thereby improving the treatment effect of the whole reactor.
附图说明 Description of drawings
图1为本发明一种异向流电生物耦合净水系统流程图，结合本图做进一步的说明。 Fig. 1 is a flow chart of an anisotropic galvanic biological coupling water purification system according to the present invention, which will be further explained in conjunction with this figure.
附图1为本发明的流程示意图。 Accompanying drawing 1 is the schematic flow chart of the present invention.
图1中：1直流电源，2阳极线，3阴极线，4粒子电极，5滤料，6塑料多孔板，7空气压缩机，8曝气盘，9反冲洗泵，10净水出水管，11钛网，12不锈钢孔板电极，13曝气出水室，14生物滤料层，15三维粒子电极层，16高位水箱，17污水管，18反冲洗出水管，19反冲洗进水管，20曝气管，21配水区，22承托层。 In Figure 1: 1. DC power supply, 2. Anode wire, 3. Cathode wire, 4. Particle electrode, 5. Filter material, 6. Plastic porous plate, 7. Air compressor, 8. Aeration disc, 9. Backwash pump, 10. Clean water outlet pipe, 11 titanium mesh, 12 stainless steel orifice electrode, 13 aeration outlet chamber, 14 biological filter layer, 15 three-dimensional particle electrode layer, 16 high water tank, 17 sewage pipe, 18 backwash outlet pipe, 19 backwash inlet pipe, 20 exposure Trachea, 21 water distribution area, 22 supporting layer.
具体实施方式 detailed description
实施例一：Embodiment one:
附图为本发明的一种具体实施例，该实施例包括高位水箱13中的污水经污水管17进入配水区21，配水区21中的污水经过钛网11进入三维粒子电极层15，三维粒子电极层15外部接有直流电源1，直流电源1通过阳极线2、阴极线3分别和三维粒子电极层15内的钛网11、不锈钢孔板电极12相连，经过三维粒子电极层15处理后的水进入生物滤料层14，经过生物滤料层14处理后的水进入曝气出水室13，最后从曝气出水室13中流入净水出水管排出10，同时，空气压缩机7通过曝气管曝气盘8充气，气体依次经过曝气出水室13、承托层22、生物滤料层14、三维粒子电极层15、配水区21，最后没有利用的气体从配水区21逸出。 Accompanying drawing is a kind of specific embodiment of the present invention, and this embodiment comprises that the sewage in the high water tank 13 enters the water distribution area 21 through the sewage pipe 17, and the sewage in the water distribution area 21 enters the three-dimensional particle electrode layer 15 through the titanium mesh 11, and the three-dimensional particle The electrode layer 15 is externally connected with a DC power supply 1, and the DC power supply 1 is respectively connected to the titanium mesh 11 and the stainless steel orifice plate electrode 12 in the three-dimensional particle electrode layer 15 through the anode wire 2 and the cathode wire 3. Water enters the biological filter material layer 14, and the water treated by the biological filter material layer 14 enters the aeration outlet chamber 13, and finally flows into the water purification outlet pipe 10 from the aeration outlet chamber 13, and at the same time, the air compressor 7 passes the aeration The tube aeration pan 8 is inflated, and the gas passes through the aeration outlet chamber 13, the supporting layer 22, the biological filter material layer 14, the three-dimensional particle electrode layer 15, and the water distribution area 21 in sequence, and finally the unused gas escapes from the water distribution area 21.
将高位水箱13中的污水经污水管17进入配水区21，配水区21中的污水经过钛网11进入三维粒子电极层15，内填锌铝废渣基粒子电极4，高度300mm，三维粒子电极层15外部接有直流电源1，直流电源1通过阳极线2、阴极线3分别和三维粒子电极层15内的钛网11、不锈钢孔板电极12相连，经过三维粒子电极层15处理后的水进入生物滤料层14，滤料为多孔复合粉煤灰滤料5，高1000mm，经过生物滤料层14处理后的水进入曝气出水室13，最后从曝气出水室13中流入净水出水管排出10，同时，空气压缩机7通过曝气管曝气盘8充气，气体依次经过曝气出水室13、承托层22、生物滤料层14、三维粒子电极层15、配水区21，最后没有利用的气体从配水区21逸出，当达到预定的水头损失时，对异向流电生物耦合系统进行反冲洗，首先由空气压缩机7进行气洗，然后打开反冲洗水泵9加压对异向流电生物耦合净水系统进行气水联合冲洗，之后关闭空气压缩机7，再用反冲洗水泵9加压对异向流电生物耦合净水系统进行水洗，反冲洗的水经反冲洗出水管18排出。 The sewage in the high-level water tank 13 enters the water distribution area 21 through the sewage pipe 17, and the sewage in the water distribution area 21 enters the three-dimensional particle electrode layer 15 through the titanium mesh 11, and the zinc-aluminum waste slag-based particle electrode 4 is filled inside, with a height of 300mm. The three-dimensional particle electrode layer 15 is externally connected with a DC power supply 1, and the DC power supply 1 is respectively connected to the titanium mesh 11 and the stainless steel orifice plate electrode 12 in the three-dimensional particle electrode layer 15 through the anode wire 2 and the cathode wire 3, and the water treated by the three-dimensional particle electrode layer 15 enters the Biological filter material layer 14, the filter material is porous composite fly ash filter material 5, 1000mm high, the water treated by biological filter material layer 14 enters the aeration water outlet chamber 13, and finally flows into the clean water outlet from the aeration water outlet chamber 13 The water pipe discharges 10, and at the same time, the air compressor 7 inflates through the aeration tube aeration disc 8, and the gas passes through the aeration outlet chamber 13, the supporting layer 22, the biological filter material layer 14, the three-dimensional particle electrode layer 15, and the water distribution area 21 in sequence, Finally, the unused gas escapes from the water distribution area 21. When the predetermined water head loss is reached, the anisotropic current biocoupling system is backwashed. First, the air compressor 7 is used for air washing, and then the backwash water pump 9 is turned on to pressurize Air-water joint flushing is performed on the anisotropic current bio-coupling water purification system, and then the air compressor 7 is turned off, and then the backwash water pump 9 is used to pressurize the anisotropic current bio-coupling water purification system to wash the anti-current bio-coupling water purification system. Rinse out water pipe 18 and discharge.
采用上述一种异向流电生物耦合净水方法包括如下步骤：(1)进水水力负荷为6m3/m2?h，经过污水管进入配水区21；（2）向曝气出水室13通入压缩空气，空气压缩机压力0.3MPa，气水体积比为5:1；（3）污水经过配水区21，进入三维粒子电极层15，再经过生物滤料层14，最后从曝气出水室13中流入净水出水管10排出（4）同时，气体通过曝气出水室13，进入生物滤料层14，再经过三维粒子电极层15，最后没有利用的气体从配水区21逸出；（5）在三维粒子电极层15，直流电源1通过阳极线2、阴极线3分别和钛网11、不锈钢孔板电极12相连，提供12V电压，进行电化学反应；（6）运行一段时间后对异向流电生物耦合净水系统进行反冲洗，先气洗3分钟，然后同时水洗和气洗5分钟，再水洗8分钟。 Using the above-mentioned one-way current biological coupling water purification method includes the following steps: (1) The hydraulic load of the incoming water is 6m 3 /m 2 ?h, and enters the water distribution area 21 through the sewage pipe; Enter compressed air, the pressure of the air compressor is 0.3MPa, and the air-water volume ratio is 5:1; (3) The sewage passes through the water distribution area 21, enters the three-dimensional particle electrode layer 15, and then passes through the biological filter layer 14, and finally the water is discharged from the aeration (4) At the same time, the gas passes through the aeration outlet chamber 13, enters the biological filter material layer 14, and then passes through the three-dimensional particle electrode layer 15, and finally the unused gas escapes from the water distribution area 21; (5) On the three-dimensional particle electrode layer 15, the DC power supply 1 is connected to the titanium mesh 11 and the stainless steel orifice plate electrode 12 through the anode wire 2 and the cathode wire 3 respectively, and provides a voltage of 12V for electrochemical reaction; (6) After running for a period of time Backwash the anisotropic current biological coupling water purification system, first air wash for 3 minutes, then water wash and air wash for 5 minutes at the same time, and then water wash for 8 minutes.
实施例二： Embodiment two :
本具体实施例的异向流电生物耦合净水系统与具体实施例一的异向流电生物耦合净水系统相同。 The anisotropic current biological coupling water purification system in this specific embodiment is the same as the anisotropic current biological coupling water purification system in the first embodiment.
本净水方法与具体实施例一净水方法区别在于：曝气的气水体积比为4:1。 The difference between this water purification method and the water purification method in Embodiment 1 is that the air-to-water volume ratio of the aeration is 4:1.
实施例三： Embodiment three:
本具体实施例的异向流电生物耦合净水系统与具体实施例一的异向流电生物耦合净水系统相同。 The anisotropic current biological coupling water purification system in this specific embodiment is the same as the anisotropic current biological coupling water purification system in the first embodiment.
本净水方法与具体实施例一净水方法区别在于：曝气的气水体积比为3:1。 The difference between this water purification method and the water purification method in Embodiment 1 is that the air-to-water volume ratio of the aeration is 3:1.
Claims (6)
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