CN111807501A - A continuous high-concentration ozone oxidation treatment sewage device and sewage treatment method thereof - Google Patents

A continuous high-concentration ozone oxidation treatment sewage device and sewage treatment method thereof Download PDF

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CN111807501A
CN111807501A CN202010698183.4A CN202010698183A CN111807501A CN 111807501 A CN111807501 A CN 111807501A CN 202010698183 A CN202010698183 A CN 202010698183A CN 111807501 A CN111807501 A CN 111807501A
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valve
ozone
pipeline
reaction tank
water
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鄢碧鹏
王磊
叶飞
贝超其
柳自强
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Yangzhou University
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Yangzhou University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • C02F2201/007Modular design
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/78Details relating to ozone treatment devices
    • C02F2201/782Ozone generators

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  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention relates to a sewage treatment device and a sewage treatment method by continuous high-concentration ozone oxidation, which consists of an ozone adding and recycling system, a hydraulic circulating system and a closed reaction tank; the ozone adding and recycling system comprises an ozone generator, a gas storage box, an air inlet valve, a gas flowmeter and a gas return pipeline; the hydraulic circulating system comprises a circulating pipeline, a water inlet valve, a circulating water pump, a liquid flowmeter, a reflux control valve, a pressure gauge, a Venturi tube, a water outlet valve and an aeration head; the top of the closed reaction tank is provided with a safety valve, a water adding valve and a pressure gauge; the ozone generator, the gas storage tank, the air inlet valve and the gas flowmeter are sequentially connected through a pipeline, the gas storage tank and the safety valve are connected through a gas return pipeline, and the gas flowmeter is connected with the Venturi tube through a pipeline. The invention depends on the power of the circulating water pump, is energy-saving and environment-friendly, is simple to operate, and can be widely applied to the oxidation treatment of the production sewage in small and medium-sized factories.

Description

一种持续高浓度臭氧氧化处理污水装置及其污水处理方法A continuous high-concentration ozone oxidation treatment sewage device and sewage treatment method thereof

技术领域technical field

本发明涉及一种持续高浓度臭氧氧化处理污水装置及其污水处理方法,用来提高难降解的工业废水的可生化性,同样也适用于城镇工业污水集中氧化处理,属于机废水氧化处理技术领域。The invention relates to a continuous high-concentration ozone oxidation treatment sewage treatment device and a sewage treatment method thereof, which are used to improve the biodegradability of refractory industrial wastewater, and are also suitable for centralized oxidation treatment of urban industrial sewage, belonging to the technical field of organic wastewater oxidation treatment .

背景技术Background technique

臭氧因其氧化效果好、不产生二次污染、处理效率高等特点,在工业污水处理中经常被采用,它能将有机废水中的大分子分解成小分子物质,提高废水的可生化性。 臭氧氧化有机废水的能力和水中臭氧浓度、温度、PH值、接触面积和反应时间等因素有关,在水的温度和PH一定时,水中臭氧浓度及其与水接触面积是影响其氧化能力的最主要因素。Ozone is often used in industrial sewage treatment because of its good oxidation effect, no secondary pollution and high treatment efficiency. It can decompose macromolecules in organic wastewater into small molecular substances and improve the biodegradability of wastewater. The ability of ozone to oxidize organic wastewater is related to factors such as ozone concentration in water, temperature, pH value, contact area and reaction time. When the temperature and pH of water are constant, ozone concentration in water and its contact area with water are the most important factors affecting its oxidation ability. major factor.

传统的臭氧投加方式主要有两种,一是常压下向水中直接曝气,另一种是利用气液混合泵的叶轮高速旋转同时吸入液体和气体。直接曝气的优点是臭氧受气体本身特性的影响小,抗分解能力相对较强。但臭氧气泡直径大、上升速度快、停留时间短,与水接触面积小,氧化效果较差;气液混合泵法是利用泵自身在吸水的同时吸入部分气体进入液体中的特点,将臭氧溶入水中,由于采用气液混合泵法可以产生微纳米气泡,所以气体可以在水中存在较长时间,传质效率增高,同时微纳米气泡可以促进羟基自由基的生成,对处理效果进一步增强,其缺点是混合泵吸取的臭氧量少,水中臭氧浓度依然较低。此外,气液混合泵法循环有一个常压释放的过程,不能持续维持高浓度臭氧状态,影响氧化效果。There are two main methods of traditional ozone dosing, one is to directly aerate the water under normal pressure, and the other is to use the high-speed rotation of the impeller of the gas-liquid mixing pump to simultaneously inhale liquid and gas. The advantage of direct aeration is that ozone is less affected by the characteristics of the gas itself and has relatively strong resistance to decomposition. However, the ozone bubble diameter is large, the rising speed is fast, the residence time is short, the contact area with water is small, and the oxidation effect is poor. Into the water, because the gas-liquid mixing pump method can generate micro-nano bubbles, the gas can exist in the water for a long time, and the mass transfer efficiency is increased. At the same time, the micro-nano bubbles can promote the generation of hydroxyl radicals and further enhance the treatment effect. The disadvantage is that the amount of ozone absorbed by the mixing pump is small, and the ozone concentration in the water is still low. In addition, the gas-liquid mixing pump cycle has a process of atmospheric pressure release, which cannot continuously maintain a high-concentration ozone state, which affects the oxidation effect.

臭氧的化学性质活泼,它在常温常压下即可自行分解,产生氧气,半衰期约15-30min,且高温条件下分解更快。利用空压机或气泵加压,臭氧经过压缩后温度升高很快,并且在储气罐停留时间较长,造成分解剧烈,使得气源中臭氧浓度降低,失去加压曝气的意义。The chemical properties of ozone are lively. It can decompose by itself at normal temperature and pressure to generate oxygen. The half-life is about 15-30min, and it decomposes faster under high temperature conditions. Using an air compressor or an air pump to pressurize, the temperature of ozone rises rapidly after compression, and the residence time in the gas storage tank is long, resulting in violent decomposition, which reduces the ozone concentration in the gas source and loses the meaning of pressurized aeration.

根据亨利定律,当温度一定时,气体在水中的溶解度和平衡分压成正比,即气相的压力越大,气体溶解度越大,显然,臭氧在加压状态下曝气可提高其在水中的溶解度,从而提高水中的臭氧浓度。当达到0.3Mpa左右溶气压力时,气体(包括臭氧)会以微纳米气泡型式存在水中,与水接触面积也大幅度增加。此外,臭氧比气源中其它种类气体溶解度高(是氧气的13倍),加压曝气时其它气体更容易逸出,使得臭氧占溶解在水中的气体比例增大。微纳米气泡在释放时的空化效应又可促进羟基自由基的生成,进一步提升其氧化能力。 可见臭氧加压曝气具有提高水中的臭氧浓度,增大臭氧接触面积,微纳米气泡二次强化氧化等作用。According to Henry's law, when the temperature is constant, the solubility of gas in water is proportional to the equilibrium partial pressure, that is, the greater the pressure of the gas phase, the greater the solubility of the gas. Obviously, aeration of ozone in a pressurized state can improve its solubility in water. , thereby increasing the ozone concentration in the water. When the dissolved gas pressure reaches about 0.3Mpa, the gas (including ozone) will exist in the water in the form of micro-nano bubbles, and the contact area with water will also increase significantly. In addition, ozone is more soluble than other types of gases in the gas source (13 times that of oxygen), and other gases are more likely to escape during pressurized aeration, which increases the proportion of ozone in the gas dissolved in water. The cavitation effect of the micro-nano bubbles during the release can promote the generation of hydroxyl radicals and further enhance their oxidative ability. It can be seen that ozone pressurized aeration has the functions of increasing the ozone concentration in water, increasing the ozone contact area, and strengthening the oxidation of micro-nano bubbles.

发明内容SUMMARY OF THE INVENTION

本发明的目的是为了解决现有技术的不足,提供了一种持续高浓度臭氧氧化处理污水装置及其污水处理方法。The purpose of the present invention is to solve the deficiencies of the prior art, and to provide a continuous high-concentration ozone oxidation treatment sewage device and a sewage treatment method thereof.

本发明的目的是这样实现的,一种持续高浓度臭氧氧化处理污水装置,其特征是,由臭氧投加和循环利用系统、水力循环系统、密闭式反应罐组成;The object of the present invention is achieved in this way, a continuous high-concentration ozone oxidation treatment sewage device is characterized in that it is composed of an ozone dosing and recycling system, a hydraulic circulation system, and a closed reaction tank;

所述臭氧投加和循环利用系统包括臭氧发生器、储气箱、进气阀门、气体流量计、气体回流管路;The ozone dosing and recycling system includes an ozone generator, a gas storage box, an intake valve, a gas flow meter, and a gas return pipeline;

所述水力循环系统包括循环管路、进水阀门、循环水泵、液体流量计、回流控制阀门、压力表、文丘里管、出水阀门、曝气头;The hydraulic circulation system includes a circulation pipeline, a water inlet valve, a circulating water pump, a liquid flow meter, a backflow control valve, a pressure gauge, a venturi pipe, a water outlet valve, and an aeration head;

所述密闭式反应罐顶部设有安全阀、加水阀门、压力表,密闭式反应罐底部设有排水阀门;The top of the closed reaction tank is provided with a safety valve, a water adding valve and a pressure gauge, and the bottom of the closed reaction tank is provided with a drain valve;

所述臭氧发生器、储气箱、进气阀门、气体流量计依次经管路贯通连接,且储气箱和安全阀经气体回流管路连接,气体流量计经管路与文丘里管连接;The ozone generator, the gas storage box, the intake valve, and the gas flowmeter are connected through the pipeline in turn, and the gas storage box and the safety valve are connected through the gas return pipeline, and the gas flowmeter is connected with the Venturi tube through the pipeline;

所述水力循环系统中的循环管路的进水口连接于密闭式反应罐的侧壁,且循环管路的进水口与密闭式反应罐贯通,循环管路的出水口延伸至密闭式反应罐内,且循环管路延伸至密闭式反应罐内的出水口设有与循环管路贯通连接的曝气头;所述进水阀门、循环水泵、液体流量计、回流控制阀门、压力表、文丘里管、出水阀门依次安装于循环管路上,且在沿循环管路进水口向曝气头方向布置;The water inlet of the circulation pipeline in the hydraulic circulation system is connected to the side wall of the closed reaction tank, and the water inlet of the circulation pipeline is connected with the closed reaction tank, and the water outlet of the circulation pipeline extends into the closed reaction tank , and the water outlet of the circulating pipeline extending to the closed reaction tank is provided with an aeration head that is throughly connected to the circulating pipeline; the water inlet valve, circulating water pump, liquid flow meter, return control valve, pressure gauge, venturi The pipe and the water outlet valve are installed on the circulating pipeline in turn, and are arranged along the water inlet of the circulating pipeline to the direction of the aeration head;

还设有回流控制阀门管路,回流控制阀门管路的出水口与循环水泵一边的循环管路贯通连接,回流控制阀门管路的进水口与循环水泵另一边的循环管路贯通连接,且回流控制阀门管路的进水口连接于循环水泵、液体流量计之间的循环管路上;所述回流控制阀门安装于回流控制阀门管路上。There is also a backflow control valve pipeline, the water outlet of the backflow control valve pipeline is connected to the circulation pipeline on one side of the circulating water pump, and the water inlet of the backflow control valve pipeline is connected to the circulating pipeline on the other side of the circulating water pump, and the return flow The water inlet of the control valve pipeline is connected to the circulating pipeline between the circulating water pump and the liquid flow meter; the backflow control valve is installed on the backflow control valve pipeline.

所述密闭式反应罐上下使用法兰密封。The upper and lower sides of the closed reaction tank are sealed with flanges.

所述循环管路的进水口连接于密闭式反应罐的侧壁中部。The water inlet of the circulation pipeline is connected to the middle of the side wall of the closed reaction tank.

所述安全阀为定压缓释阀。The safety valve is a constant pressure slow release valve.

打开臭氧发生器,臭氧发生器产生的臭氧进入储气箱,在储气箱中储存臭氧;同时关闭进水阀门、出水阀门和排水阀门,打开加水阀门,在密闭式反应罐中加入待处理污水,保持待处理污水的液面淹没循环管路的进水口,关闭加水阀门;Turn on the ozone generator, the ozone generated by the ozone generator enters the gas storage tank, and the ozone is stored in the gas storage tank; at the same time, close the water inlet valve, the water outlet valve and the drain valve, open the water filling valve, and add the sewage to be treated in the closed reaction tank , keep the liquid level of the sewage to be treated submerged the water inlet of the circulating pipeline, and close the water filling valve;

打开进水阀门、出水阀门,启动循环水泵,密闭式反应罐内待处理废水经循环管路进水口吸入经循环水泵、液体流量计、压力表、文丘里管、出水阀门排出至曝气头,并经曝气头回流至密闭式反应罐内;Open the water inlet valve and the water outlet valve, start the circulating water pump, the waste water to be treated in the closed reaction tank is sucked through the water inlet of the circulating pipeline, and then discharged to the aeration head through the circulating water pump, liquid flow meter, pressure gauge, Venturi tube, and water outlet valve. And return to the closed reaction tank through the aeration head;

通过调节回流控制阀门,控制回流量,并通过液体流量计测出,循环管路上的压力由压力表显示,通过水力循环使文丘里管工作,文丘里管吸取储气箱中由臭氧发生器产生的臭氧;By adjusting the return flow control valve, the return flow is controlled and measured by the liquid flow meter. The pressure on the circulation pipeline is displayed by the pressure gauge. The Venturi tube works through the hydraulic circulation. of ozone;

文丘里管从储气箱吸入臭氧,臭氧与待处理废水在文丘里管中形成水汽混合物,经过出水阀门排出至曝气头,并经曝气头曝气,气泡上升到密闭式反应罐内水面以上,随着循环水泵的持续工作,密闭式反应罐上部的气体体积增加,压力增大,当达到设定压力时安全阀开始排气,排出的臭氧尾气经气体回流管路进入储气箱,循环利用;此后,密闭式反应罐内的压力稳定,实现持续稳压臭氧曝气,强化臭氧氧化能力。The venturi tube inhales ozone from the gas storage tank, and the ozone and the wastewater to be treated form a water vapor mixture in the venturi tube, which is discharged to the aeration head through the water outlet valve, and is aerated through the aeration head, and the air bubbles rise to the water surface in the closed reaction tank Above, with the continuous operation of the circulating water pump, the gas volume in the upper part of the closed reaction tank increases, and the pressure increases. When the set pressure is reached, the safety valve starts to exhaust, and the exhausted ozone tail gas enters the gas storage tank through the gas return line. Recycling; after that, the pressure in the closed reaction tank is stable, realizing continuous pressure-stabilized ozone aeration and strengthening the ozone oxidation capacity.

打开排水阀门可排出密闭式反应罐内污水处理后的水。Open the drain valve to drain the water after sewage treatment in the closed reaction tank.

本发明结构合理、方法先进科学,通过本发明,提供的一种持续高浓度臭氧氧化处理污水装置及其污水处理方法,在结构上由臭氧投加和循环利用系统、水力循环系统、密闭式反应罐构成,臭氧投加和循环利用系统包括臭氧发生器、储气箱、气体流量计、循环利用管路组成;水力循环系统包括循环水泵、回流调节、液体流量计、压力表、文丘里管和阀门;密闭式反应罐底部装有一个曝气头、一个排水阀门,上部设有压力表、进水阀门、安全阀;所述密闭式反应罐上下使用法兰密封。所述水力循环系统进水在密闭式反应罐中部,出水在密闭式反应罐底部。所述密闭式反应罐设有曝气头,用于增强气水混合。所述密闭式反应罐顶部设置的安全阀为定压缓释阀。The present invention has reasonable structure and advanced and scientific methods. Through the present invention, a continuous high-concentration ozone oxidation treatment sewage treatment device and sewage treatment method thereof are provided. Tank composition, ozone dosing and recycling system includes ozone generator, gas storage tank, gas flow meter, recycling pipeline; hydraulic circulation system includes circulating water pump, return adjustment, liquid flow meter, pressure gauge, Venturi tube and valve; the bottom of the closed reaction tank is equipped with an aeration head and a drain valve, and the upper part is equipped with a pressure gauge, a water inlet valve and a safety valve; the upper and lower parts of the closed reaction tank are sealed with flanges. The water inlet of the hydraulic circulation system is in the middle of the closed reaction tank, and the water outlet is at the bottom of the closed reaction tank. The closed reaction tank is provided with an aeration head for enhancing gas-water mixing. The safety valve set at the top of the closed reaction tank is a constant pressure slow release valve.

工作原理:首先向密闭式反应罐加入待处理废水,保持液面淹没进水管口。关闭进水阀门,启动臭氧发生系统,产生的臭氧进入储气箱,然后启动循环水泵,文丘里计从储气箱吸入臭氧,形成水汽混合物,经过曝气头曝气,气泡上升到水面以上,随着循环泵的持续工作,密闭式反应罐上部的气体体积增加,压力增大,当达到设定压力时定压缓释阀开始排气,排出的臭氧尾气进入储气箱,循环利用。此后密闭式反应罐内的压力稳定,实现持续稳压臭氧曝气,强化臭氧氧化能力。Working principle: First, add the waste water to be treated into the closed reaction tank to keep the liquid level submerged in the water inlet pipe. Close the water inlet valve, start the ozone generation system, the generated ozone enters the air storage tank, and then start the circulating water pump, the venturi meter inhales ozone from the air storage tank to form a water-vapor mixture, which is aerated by the aeration head, and the bubbles rise above the water surface. With the continuous operation of the circulating pump, the gas volume in the upper part of the closed reaction tank increases, and the pressure increases. When the set pressure is reached, the constant pressure slow-release valve starts to exhaust, and the exhausted ozone tail gas enters the gas storage tank for recycling. After that, the pressure in the closed reaction tank is stable, realizing continuous pressure-stabilized ozone aeration and strengthening the ozone oxidation capacity.

本发明具有以下创新点及特点:The present invention has the following innovations and features:

1、臭氧不经压缩实时投加到废水中,气源臭氧浓度衰减小,实现持续稳压循环曝气,可大幅度提高水中的臭氧浓度,增大臭氧与废水接触面积。1. Ozone is added to the wastewater in real time without compression, and the ozone concentration of the gas source is attenuated little, realizing continuous pressure-stabilizing and circulating aeration, which can greatly increase the ozone concentration in the water and increase the contact area between ozone and wastewater.

2、循环水泵在密闭式反应罐中抽水和出水,进口和出口处的压力水头相等,循环过程仅仅需要克服局部水头损失,扬程低,能耗小,提高了处理能力。2. The circulating water pump pumps and discharges water in a closed reaction tank. The pressure head at the inlet and outlet is equal. The circulation process only needs to overcome the local head loss, with low lift and low energy consumption, which improves the processing capacity.

3、臭氧尾气进入储气箱,循环利用,提高了臭氧利用效率。3. The ozone tail gas enters the gas storage tank and is recycled, which improves the ozone utilization efficiency.

根据亨利定律,当温度一定时,气体在水中的溶解度和平衡分压成正比,即气相的压力越大,气体溶解度越大,显然,臭氧在加压状态下曝气可提高其在水中的溶解度,从而提高水中的臭氧浓度。当达到0.3Mpa左右溶气压力时,气体(包括臭氧)会以微纳米气泡型式存在水中,与水接触面积也大幅度增加。此外,臭氧比气源中其它种类气体溶解度高(是氧气的13倍),加压曝气时其它气体更容易逸出,使得臭氧占溶解在水中的气体比例增大。微纳米气泡在释放时的空化效应又可促进羟基自由基的生成,进一步提升其氧化能力。 可见臭氧加压曝气具有提高水中的臭氧浓度,增大臭氧接触面积,微纳米气泡二次强化氧化等作用。采用循环水泵让文丘里管吸入臭氧,气体不经压缩实时投加到废水中,气源臭氧浓度衰减小,实现持续稳压循环曝气,可大幅度提高水中的臭氧浓度,增大臭氧与废水接触面积。利用气体回收管路将排出气体回收利用,减少污染。According to Henry's law, when the temperature is constant, the solubility of gas in water is proportional to the equilibrium partial pressure, that is, the greater the pressure of the gas phase, the greater the solubility of the gas. Obviously, aeration of ozone in a pressurized state can improve its solubility in water. , thereby increasing the ozone concentration in the water. When the dissolved gas pressure reaches about 0.3Mpa, the gas (including ozone) will exist in the water in the form of micro-nano bubbles, and the contact area with water will also increase significantly. In addition, ozone is more soluble than other types of gases in the gas source (13 times that of oxygen), and other gases are more likely to escape during pressurized aeration, which increases the proportion of ozone in the gas dissolved in water. The cavitation effect of the micro-nano bubbles during the release can promote the generation of hydroxyl radicals and further enhance their oxidative ability. It can be seen that ozone pressurized aeration has the functions of increasing the ozone concentration in water, increasing the ozone contact area, and strengthening the oxidation of micro-nano bubbles. A circulating water pump is used to inhale ozone into the venturi tube, and the gas is added to the waste water in real time without compression. The ozone concentration of the gas source is attenuated little, and the continuous pressure-stabilizing and circulating aeration can be realized, which can greatly increase the ozone concentration in the water and increase the ozone and waste water. Contact area. Use the gas recovery pipeline to recycle the exhaust gas to reduce pollution.

本发明的一种持续保持高浓度臭氧氧化处理污水装置依靠的动力就是循环水泵,节能环保、操作简单,可广泛应用于中小型工厂中生产污水的氧化处理,提高其可生化性,为污水的深度处理提供良好的工况条件,具有较大的实用性和社会经济效益。The power of the device for continuously maintaining high-concentration ozone oxidation treatment of sewage is the circulating water pump, which is energy-saving, environmentally friendly and simple to operate, and can be widely used in the oxidation treatment of production sewage in small and medium-sized factories to improve its biodegradability. Advanced treatment provides good working conditions and has great practicability and social and economic benefits.

附图说明Description of drawings

图1为本发明的结构示意图;Fig. 1 is the structural representation of the present invention;

图中:1进水阀门、2循环水泵、3液体流量计、4回流控制阀门、5压力表、6文丘里管、7出水阀门、8曝气头、9密闭式反应罐、10安全阀、11加水阀门、12压力表、13臭氧发生器、14储气箱、15进气阀门、16气体流量计、17排水阀门、18气体回流管路。In the picture: 1 inlet valve, 2 circulating water pump, 3 liquid flow meter, 4 return control valve, 5 pressure gauge, 6 venturi tube, 7 outlet valve, 8 aeration head, 9 closed reaction tank, 10 safety valve, 11 water adding valve, 12 pressure gauge, 13 ozone generator, 14 gas storage tank, 15 inlet valve, 16 gas flow meter, 17 drain valve, 18 gas return pipeline.

具体实施方式Detailed ways

下面结合附图以及附图说明对本发明做进一步说明。The present invention will be further described below with reference to the accompanying drawings and the description of the accompanying drawings.

一种持续高浓度臭氧氧化处理污水装置,由臭氧投加和循环利用系统、水力循环系统、密闭式反应罐9组成;臭氧投加和循环利用系统包括臭氧发生器13、储气箱14、进气阀门15、气体流量计16、气体回流管路18;水力循环系统包括循环管路、进水阀门1、循环水泵2、液体流量计3、回流控制阀门4、压力表5、文丘里管6、出水阀门7、曝气头8;密闭式反应罐9顶部设有安全阀10、加水阀门11、压力表12,密闭式反应罐9底部设有排水阀门17。A continuous high-concentration ozone oxidation treatment sewage device is composed of an ozone dosing and recycling system, a hydraulic circulation system, and a closed reaction tank 9; the ozone dosing and recycling system includes an ozone generator 13, a gas storage tank 14, an inlet Gas valve 15, gas flow meter 16, gas return pipeline 18; hydraulic circulation system includes circulation pipeline, water inlet valve 1, circulating water pump 2, liquid flow meter 3, return control valve 4, pressure gauge 5, Venturi tube 6 , a water outlet valve 7, aeration head 8; the top of the closed reaction tank 9 is provided with a safety valve 10, a water valve 11, and a pressure gauge 12, and the bottom of the closed reaction tank 9 is provided with a drain valve 17.

臭氧发生器13、储气箱14、进气阀门15、气体流量计16依次经管路贯通连接,且储气箱14和安全阀10经气体回流管路18连接,气体流量计16经管路与文丘里管6连接;水力循环系统中的循环管路的进水口连接于密闭式反应罐9的侧壁,且循环管路的进水口与密闭式反应罐9贯通,循环管路的出水口延伸至密闭式反应罐9内,且循环管路延伸至密闭式反应罐9内的出水口设有与循环管路贯通连接的曝气头8;进水阀门1、循环水泵2、液体流量计3、回流控制阀门4、压力表5、文丘里管6、出水阀门7依次安装于循环管路上,且在沿循环管路进水口向曝气头8方向布置;还设有回流控制阀门管路,回流控制阀门管路的出水口与循环水泵2一边的循环管路贯通连接,回流控制阀门管路的进水口与循环水泵2另一边的循环管路贯通连接,且回流控制阀门管路的进水口连接于循环水泵2、液体流量计3之间的循环管路上;回流控制阀门4安装于回流控制阀门管路上。The ozone generator 13, the gas storage box 14, the intake valve 15, and the gas flow meter 16 are connected through the pipeline in turn, and the gas storage box 14 and the safety valve 10 are connected through the gas return pipeline 18, and the gas flow meter 16 is connected with the venturi through the pipeline. The inner pipe 6 is connected; the water inlet of the circulation pipe in the hydraulic circulation system is connected to the side wall of the closed reaction tank 9, and the water inlet of the circulation pipe is connected with the closed reaction tank 9, and the water outlet of the circulation pipe extends to Inside the closed reaction tank 9, and the water outlet extending from the circulation pipeline to the closed type reaction tank 9 is provided with an aeration head 8 that is throughly connected to the circulation pipeline; a water inlet valve 1, a circulating water pump 2, a liquid flow meter 3, The backflow control valve 4, the pressure gauge 5, the venturi tube 6, and the water outlet valve 7 are installed on the circulation pipeline in turn, and are arranged along the water inlet of the circulation pipeline toward the aeration head 8; The water outlet of the control valve pipeline is connected to the circulating pipeline on one side of the circulating water pump 2, the water inlet of the return control valve pipeline is connected to the circulating pipeline on the other side of the circulating water pump 2, and the water inlet of the return control valve pipeline is connected On the circulating pipeline between the circulating water pump 2 and the liquid flow meter 3; the backflow control valve 4 is installed on the backflow control valve pipeline.

进一步的,密闭式反应罐9上下使用法兰密封。循环管路的进水口连接于密闭式反应罐9的侧壁中部。安全阀10为定压缓释阀。Further, the closed reaction tank 9 is sealed with flanges up and down. The water inlet of the circulation pipeline is connected to the middle of the side wall of the closed reaction tank 9 . The safety valve 10 is a constant pressure slow release valve.

使用时,打开臭氧发生器13,臭氧发生器13产生的臭氧进入储气箱14,在储气箱14中储存臭氧;同时关闭进水阀门1、出水阀门7和排水阀门17,打开加水阀门11,在密闭式反应罐9中加入待处理污水,保持待处理污水的液面淹没循环管路的进水口,关闭加水阀门11。When in use, open the ozone generator 13, the ozone generated by the ozone generator 13 enters the gas storage tank 14, and the ozone is stored in the gas storage tank 14; at the same time, close the water inlet valve 1, the water outlet valve 7 and the drain valve 17, and open the water filling valve 11. , add the sewage to be treated in the closed reaction tank 9, keep the liquid level of the sewage to be treated submerged the water inlet of the circulation pipeline, and close the water adding valve 11.

打开进水阀门1、出水阀门7,启动循环水泵2,密闭式反应罐9内待处理废水经循环管路进水口吸入经循环水泵2、液体流量计3、压力表5、文丘里管6、出水阀门7排出至曝气头8,并经曝气头8回流至密闭式反应罐9内;通过调节回流控制阀门4,控制回流量,并通过液体流量计3测出,循环管路上的压力由压力表5显示,通过水力循环使文丘里管6工作,文丘里管6吸取储气箱14中由臭氧发生器13产生的臭氧;文丘里管6从储气箱14吸入臭氧,臭氧与待处理废水在文丘里管6中形成水汽混合物,经过出水阀门7排出至曝气头8,并经曝气头8曝气,气泡上升到密闭式反应罐9内水面以上,随着循环水泵2的持续工作,密闭式反应罐9上部的气体体积增加,压力增大,当达到设定压力时安全阀10开始排气,排出的臭氧尾气经气体回流管路18进入储气箱14,循环利用;此后,密闭式反应罐9内的压力稳定,实现持续稳压臭氧曝气,强化臭氧氧化能力。打开排水阀门17可排出密闭式反应罐9内处理好后的水。Open the water inlet valve 1 and the water outlet valve 7, start the circulating water pump 2, the waste water to be treated in the closed reaction tank 9 is sucked through the water inlet of the circulating pipeline and passed through the circulating water pump 2, liquid flow meter 3, pressure gauge 5, Venturi tube 6, The water outlet valve 7 is discharged to the aeration head 8, and is returned to the closed reaction tank 9 through the aeration head 8; by adjusting the return flow control valve 4, the return flow is controlled, and measured by the liquid flow meter 3, the pressure on the circulation pipeline It is shown by the pressure gauge 5 that the Venturi tube 6 works through the hydraulic cycle, and the Venturi tube 6 absorbs the ozone generated by the ozone generator 13 in the gas storage tank 14; the venturi tube 6 inhales ozone from the gas storage box 14, and the ozone and The treated wastewater forms a water-vapor mixture in the venturi tube 6, and is discharged to the aeration head 8 through the water outlet valve 7, and is aerated through the aeration head 8, and the air bubbles rise above the water surface in the closed reaction tank 9. Continuous operation, the gas volume in the upper part of the closed reaction tank 9 increases, and the pressure increases. When the set pressure is reached, the safety valve 10 starts to exhaust, and the exhausted ozone tail gas enters the gas storage tank 14 through the gas return line 18, and is recycled; After that, the pressure in the closed reaction tank 9 is stabilized, so that continuous pressure-stabilized ozone aeration is realized, and the ozone oxidation ability is strengthened. The treated water in the closed reaction tank 9 can be discharged by opening the drain valve 17 .

如图1所示,该可持续保持高浓度臭氧氧化处理污水装置,臭氧投加和循环利用系统包括臭氧发生器13、储气箱14、进气阀门15、气体流量计16等组成,所述储气箱14和安全阀10之间设有气体回流管路18;所述水力循环系统包括进水阀门1、循环水泵2、液体流量计3、回流控制阀门4、压力表5、文丘里管6、出水阀门7、曝气头8;所述密闭式反应罐9上设安全阀10、加水阀门11、压力表12;反应柱9底端设有排水阀门17。As shown in Figure 1, this sustainable high-concentration ozone oxidation treatment sewage treatment device, the ozone dosing and recycling system includes an ozone generator 13, a gas storage tank 14, an intake valve 15, a gas flow meter 16 and the like. A gas return pipeline 18 is provided between the gas storage tank 14 and the safety valve 10; the hydraulic circulation system includes a water inlet valve 1, a circulating water pump 2, a liquid flow meter 3, a return control valve 4, a pressure gauge 5, and a venturi tube. 6. The water outlet valve 7 and the aeration head 8; the closed reaction tank 9 is provided with a safety valve 10, a water addition valve 11, and a pressure gauge 12; the bottom end of the reaction column 9 is provided with a drain valve 17.

可持续保持高浓度臭氧氧化处理污水装置的工作原理:打开臭氧发生器13,在储气箱14中储存臭氧,同时关闭进水阀门1、出水阀门7和排水阀门17,打开加水阀门11,在密闭式反应罐9中加入待处理污水,加入适量污水后关闭加水阀门11。打开水力循环管路的进水阀门1、出水阀门7,启动循环水泵2,通过调节回流控制阀门4,控制回流量,并通过液体流量计3测出,管道上的压力由压力表5显示,通过水力循环使文丘里管6工作,吸取储气箱14中由臭氧发生器13产生的臭氧,进气阀门15调节流量,并由气体流量计16测值,达到一定压力值后多余气体由安全阀10排出;排出的臭氧经气体回流管路18重新进入储气箱14中;水气混合过程中曝气头8可增强水气接触面积;保持循环水泵2连续工作,经一段时间溶气,可打开排水阀门18排出。The working principle of the sewage treatment device for sustainably maintaining high-concentration ozone oxidation treatment: open the ozone generator 13, store ozone in the gas storage tank 14, close the water inlet valve 1, the water outlet valve 7 and the drain valve 17 at the same time, and open the water filling valve 11. The sewage to be treated is added to the closed reaction tank 9, and the water adding valve 11 is closed after adding an appropriate amount of sewage. Open the water inlet valve 1 and outlet valve 7 of the hydraulic circulation pipeline, start the circulating water pump 2, control the return flow by adjusting the backflow control valve 4, and measure it through the liquid flow meter 3, the pressure on the pipeline is displayed by the pressure gauge 5, The Venturi tube 6 is operated by the hydraulic circulation, and the ozone generated by the ozone generator 13 in the gas storage tank 14 is absorbed. The intake valve 15 adjusts the flow rate, and the gas flow meter 16 measures the value. The valve 10 is discharged; the discharged ozone is re-entered into the gas storage tank 14 through the gas return line 18; the aeration head 8 can enhance the water-gas contact area during the water-gas mixing process; keep the circulating water pump 2 working continuously, and after a period of time the gas is dissolved, The drain valve 18 can be opened to discharge.

本发明中,高浓度臭氧被持续投加到密闭式反应罐中,同时安全阀排出上浮的多余气体,密闭式反应罐中维持一定压力,污水和臭氧充分接触一段时间,降解污水中的物质。臭氧不经压缩实时投加到废水中,气源臭氧浓度衰减小,实现持续稳压循环曝气,可大幅度提高水中的臭氧浓度,增大臭氧与废水接触面积。臭氧在密闭式反应罐中达到溶气效果,经释放后可产生微纳米气泡。利用循环水泵2循环污水,利用文丘里管4吸入臭氧,利用曝气头释放臭氧。密闭式反应罐上部设有安全阀10,可根据设定压力,自行调节,当压力高于设定值时,安全阀可排出多余的上浮气体,经气体回流管路将气体回收到储气箱中重复利用。In the present invention, high-concentration ozone is continuously added to the closed reaction tank, and at the same time, the safety valve discharges the floating excess gas, a certain pressure is maintained in the closed reaction tank, and the sewage and ozone are fully contacted for a period of time to degrade the substances in the sewage. Ozone is added to the wastewater in real time without compression, and the ozone concentration of the gas source is attenuated little, realizing continuous pressure-stabilizing and circulating aeration, which can greatly increase the ozone concentration in the water and increase the contact area between ozone and wastewater. Ozone achieves the effect of dissolving gas in the closed reaction tank, and can generate micro-nano bubbles after being released. The circulating water pump 2 is used to circulate the sewage, the venturi tube 4 is used to inhale the ozone, and the aeration head is used to release the ozone. The upper part of the closed reaction tank is provided with a safety valve 10, which can be adjusted according to the set pressure. When the pressure is higher than the set value, the safety valve can discharge the excess floating gas, and the gas is recovered to the gas storage tank through the gas return line in reuse.

Claims (6)

1.一种持续高浓度臭氧氧化处理污水装置,其特征是,由臭氧投加和循环利用系统、水力循环系统、密闭式反应罐(9)组成;1. A continuous high-concentration ozone oxidation treatment sewage device is characterized in that, it is composed of an ozone dosing and recycling system, a hydraulic circulation system, and a closed reaction tank (9); 所述臭氧投加和循环利用系统包括臭氧发生器(13)、储气箱(14)、进气阀门(15)、气体流量计(16)、气体回流管路(18);The ozone dosing and recycling system includes an ozone generator (13), a gas storage tank (14), an intake valve (15), a gas flow meter (16), and a gas return line (18); 所述水力循环系统包括循环管路、进水阀门(1)、循环水泵(2)、液体流量计(3)、回流控制阀门(4)、压力表(5)、文丘里管(6)、出水阀门(7)、曝气头(8);The hydraulic circulation system comprises a circulation pipeline, a water inlet valve (1), a circulating water pump (2), a liquid flow meter (3), a backflow control valve (4), a pressure gauge (5), a venturi pipe (6), Outlet valve (7), aeration head (8); 所述密闭式反应罐(9)顶部设有安全阀(10)、加水阀门(11)、压力表(12),密闭式反应罐(9)底部设有排水阀门(17);The top of the closed reaction tank (9) is provided with a safety valve (10), a water adding valve (11), a pressure gauge (12), and the bottom of the closed reaction tank (9) is provided with a drain valve (17); 所述臭氧发生器(13)、储气箱(14)、进气阀门(15)、气体流量计(16)依次经管路贯通连接,且储气箱(14)和安全阀(10)经气体回流管路(18)连接,气体流量计(16)经管路与文丘里管(6)连接;The ozone generator (13), the gas storage box (14), the air inlet valve (15), and the gas flow meter (16) are connected through the pipeline in turn, and the gas storage box (14) and the safety valve (10) are connected through the gas The return pipeline (18) is connected, and the gas flow meter (16) is connected with the venturi tube (6) through the pipeline; 所述水力循环系统中的循环管路的进水口连接于密闭式反应罐(9)的侧壁,且循环管路的进水口与密闭式反应罐(9)贯通,循环管路的出水口延伸至密闭式反应罐(9)内,且循环管路延伸至密闭式反应罐(9)内的出水口设有与循环管路贯通连接的曝气头(8);所述进水阀门(1)、循环水泵(2)、液体流量计(3)、回流控制阀门(4)、压力表(5)、文丘里管(6)、出水阀门(7)依次安装于循环管路上,且在沿循环管路进水口向曝气头(8)方向布置;The water inlet of the circulation pipeline in the hydraulic circulation system is connected to the side wall of the closed reaction tank (9), and the water inlet of the circulation pipeline is connected with the closed reaction tank (9), and the water outlet of the circulation pipeline extends into the closed reaction tank (9), and the water outlet of the circulation pipeline extending to the closed reaction tank (9) is provided with an aeration head (8) that is throughly connected to the circulation pipeline; the water inlet valve (1 ), circulating water pump (2), liquid flow meter (3), backflow control valve (4), pressure gauge (5), venturi tube (6), and water outlet valve (7) are installed on the circulating pipeline in sequence, and are installed along the The water inlet of the circulation pipeline is arranged in the direction of the aeration head (8); 还设有回流控制阀门管路,回流控制阀门管路的出水口与循环水泵(2)一边的循环管路贯通连接,回流控制阀门管路的进水口与循环水泵(2)另一边的循环管路贯通连接,且回流控制阀门管路的进水口连接于循环水泵(2)、液体流量计(3)之间的循环管路上;所述回流控制阀门(4)安装于回流控制阀门管路上。There is also a backflow control valve pipeline, the water outlet of the backflow control valve pipeline is connected with the circulating pipeline on one side of the circulating water pump (2), and the water inlet of the backflow control valve pipeline is connected with the circulating pipeline on the other side of the circulating water pump (2). and the water inlet of the backflow control valve pipeline is connected to the circulating pipeline between the circulating water pump (2) and the liquid flow meter (3); the backflow control valve (4) is installed on the backflow control valve pipeline. 2.根据权利要求1所述的一种持续高浓度臭氧氧化处理污水装置,其特征是,所述密闭式反应罐(9)上下使用法兰密封。2 . The continuous high-concentration ozone oxidation treatment sewage treatment device according to claim 1 , wherein the closed reaction tank ( 9 ) is sealed with flanges up and down. 3 . 3.根据权利要求1所述的一种持续高浓度臭氧氧化处理污水装置,其特征是,所述循环管路的进水口连接于密闭式反应罐(9)的侧壁中部。3 . A continuous high-concentration ozone oxidation treatment device for sewage according to claim 1 , wherein the water inlet of the circulation pipeline is connected to the middle of the side wall of the closed reaction tank ( 9 ). 4 . 4.根据权利要求1所述的一种持续高浓度臭氧氧化处理污水装置,其特征是,所述安全阀(10)为定压缓释阀。4 . The continuous high-concentration ozone oxidation treatment sewage treatment device according to claim 1 , wherein the safety valve ( 10 ) is a constant-pressure slow-release valve. 5 . 5.利用权利要求1-4任意一项权利要求所述的一种持续高浓度臭氧氧化处理污水装置进行污水处理方法,其特征是,打开臭氧发生器(13),臭氧发生器(13)产生的臭氧进入储气箱(14),在储气箱(14)中储存臭氧;同时关闭进水阀门(1)、出水阀门(7)和排水阀门(17),打开加水阀门(11),在密闭式反应罐(9)中加入待处理污水,保持待处理污水的液面淹没循环管路的进水口,关闭加水阀门(11);5. The sewage treatment method using a continuous high-concentration ozone oxidation treatment sewage treatment device according to any one of claims 1-4, wherein the ozone generator (13) is turned on, and the ozone generator (13) generates The ozone enters the gas storage tank (14), and the ozone is stored in the gas storage tank (14). The sewage to be treated is added into the closed reaction tank (9), the liquid level of the sewage to be treated is kept to submerge the water inlet of the circulation pipeline, and the water adding valve (11) is closed; 打开进水阀门(1)、出水阀门(7),启动循环水泵(2),密闭式反应罐(9)内待处理废水经循环管路进水口吸入经循环水泵(2)、液体流量计(3)、压力表(5)、文丘里管(6)、出水阀门(7)排出至曝气头(8),并经曝气头(8)回流至密闭式反应罐(9)内;Open the water inlet valve (1) and the water outlet valve (7), start the circulating water pump (2), the waste water to be treated in the closed reaction tank (9) is sucked into the circulating water pump (2), the liquid flow meter ( 3) The pressure gauge (5), the venturi tube (6), and the water outlet valve (7) are discharged to the aeration head (8), and are returned to the closed reaction tank (9) through the aeration head (8); 通过调节回流控制阀门(4),控制回流量,并通过液体流量计(3)测出,循环管路上的压力由压力表(5)显示,通过水力循环使文丘里管(6)工作,文丘里管(6)吸取储气箱(14)中由臭氧发生器(13)产生的臭氧;By adjusting the return control valve (4), the return flow is controlled and measured by the liquid flow meter (3), the pressure on the circulation pipeline is displayed by the pressure gauge (5), and the Venturi tube (6) is made to work through the hydraulic circulation, the venturi The inner pipe (6) absorbs the ozone generated by the ozone generator (13) in the air storage box (14); 文丘里管(6)从储气箱(14)吸入臭氧,臭氧与待处理废水在文丘里管(6)中形成水气混合物,经过出水阀门(7)排出至曝气头(8),并经曝气头(8)曝气,气泡上升到密闭式反应罐(9)内水面以上,随着循环水泵(2)的持续工作,密闭式反应罐(9)上部的气体体积增加,压力增大,当达到设定压力时安全阀(10)开始排气,排出的臭氧尾气经气体回流管路(18)进入储气箱(14),循环利用;此后,密闭式反应罐(9)内的压力稳定,实现持续稳压臭氧曝气,强化臭氧氧化能力。The venturi tube (6) inhales ozone from the gas storage tank (14), and the ozone and the waste water to be treated form a water-air mixture in the venturi tube (6), which is discharged to the aeration head (8) through the water outlet valve (7), and the After aeration by the aeration head (8), the air bubbles rise above the water surface in the closed reaction tank (9). With the continuous operation of the circulating water pump (2), the gas volume in the upper part of the closed reaction tank (9) increases, and the pressure increases. When the set pressure is reached, the safety valve (10) begins to exhaust, and the exhausted ozone tail gas enters the gas storage tank (14) through the gas return line (18) for recycling; after that, the closed reaction tank (9) The pressure is stable, and the continuous pressure-stabilized ozone aeration is realized, and the ozone oxidation ability is strengthened. 6.根据权利要求5所述的方法,其特征是,打开排水阀门(17)可排出密闭式反应罐(9)内处理好后的水。6 . The method according to claim 5 , wherein the treated water in the closed reaction tank ( 9 ) can be discharged by opening the drain valve ( 17 ). 7 .
CN202010698183.4A 2020-07-20 2020-07-20 A continuous high-concentration ozone oxidation treatment sewage device and sewage treatment method thereof Pending CN111807501A (en)

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