CN114735794A - Iron-carbon micro-electrolysis black and odorous water body treatment device and process - Google Patents

Abstract

The invention discloses a device and a process for treating black and odorous water by iron-carbon micro-electrolysis, wherein the device comprises: lower floor's inlet tube, stainless steel box, integrated form air water hybrid pipeline, be provided with keg float, filler district in the stainless steel box, the keg float install in the internal both sides of stainless steel box, stainless steel box central authorities are provided with the immersible pump water tank, filler district sets up between immersible pump water tank and keg float, filler district is provided with the little electrolysis of iron carbon and packs, install the immersible pump in the immersible pump water tank, the immersible pump water tank is connected the inlet tube of lower floor, integrated form air water hybrid pipeline is installed in the delivery port connection of immersible pump. The invention can effectively eliminate the black and odorous condition of the water body of the river, has the advantages of balanced aeration and oxygenation of the water body, inhibition of the exposure of blue algae in the water body and oxidation of pollutants released by the bottom mud of the water body, reduction of the generation of black and odorous substances, adaptation to the degradation of industrial wastewater in the water body and improvement of the biodegradability of the industrial wastewater.

Description

Iron-carbon micro-electrolysis black and odorous water body treatment device and process

Technical Field

The invention relates to the technical field of sewage treatment, in particular to an iron-carbon micro-electrolysis black and odorous water body treatment device and process.

Background

With the acceleration of the urbanization process, a large amount of domestic and industrial wastewater is discharged into the river of the urban river without proper treatment, and the obvious or hidden negative influence is caused on the river water body and the surrounding soil of the urban river. In order to solve the problem of urban river pollution, particularly the problem of smelly river gushing caused by blackening, governments at all levels pay attention to the method, a large amount of funds are invested, and most of sewage intercepting pipe networks, river course coastal sewage intercepting pipe networks and rain and sewage diversion pipe networks in cities are regulated, however, the effect is not good, the quality of river gushing water is not improved as expected, and the quality of river gushing water is still seriously polluted. Research shows that a lot of inorganic substances and persistent organic substances are accumulated in river gushes and are deposited in bottom mud of the river, the sediment has the characteristics of complex components, difficult degradation and the like, and when deposited pollutants reach a certain concentration, the pollutants such as nitrogen, phosphorus, organic substances and the like in the sediment can be continuously released from the bottom mud to overlying water, so that the pollution of the river is aggravated. The pollutants in the sediment constitute a great threat to human health and the ecological environment of urban river gushes, and the comprehensive influence is still difficult to estimate. The inner river surge of the Guangdong pearl triangular river basin city has the functions of flood control, drainage, irrigation and the like all the time, but at present, part of the river surge is seriously polluted, a large amount of pollutants are brought into the river surge along the bank, the self-purification capacity of the river surge water body environment is far exceeded, the water dissolved oxygen of the river surge is rapidly reduced, blue algae in the water body on the upper layer of the river surge are exposed, the bottom layer of the river surge is in an anaerobic or anoxic state for a long time, the bottom mud of the river surge is subjected to anaerobic fermentation, the gas formed by fermentation drives the bottom mud to turn upwards, the bottom mud and a large amount of pollutants are resuspended, the river surge is black and smelly, fishes, aquatic organisms such as water plants on the lower layer of the river surge and the like cannot survive, and the ecological system of the river channel is seriously damaged. After river surge is cut off along the bank, river surge bottom mud treatment is the key of river channel black and odorous treatment.

The river bottom mud treatment comprises in-situ treatment and ex-situ treatment. The most common method for ectopic treatment is bottom mud thinning. The sediment dredging shuttle can quickly and furthest reduce the pollution from the river-gushing sediment, improve the water quality to a greater extent, is also favorable for drainage and flood control of the river channel, and is often applied to engineering practice. However, the bottom mud of river surge of Shufushu alone cannot restore the natural self-cleaning ecosystem of river surge in a targeted manner. The dredging of the shuttles can improve the water quality of the river in a short time, and the water body recovers the original phenomenon along with the growth of inches; meanwhile, in the process of dredging river bottom mud, the release of pollutants cannot be controlled, and the pollution degree of an overlying water body is increased. Compared with the ex-situ river bottom mud treatment and the in-situ river bottom mud treatment technology, the method has the advantages of small environmental interference and low treatment cost, and is valued by experts and engineers of relevant levels, wherein aeration reoxygenation is one of the in-situ remediation technologies which have the smallest environmental influence and the greatest development prospect and are used for treating the urban polluted river channels. Aeration reoxygenation is one of the common methods for improving the water quality of urban polluted riverways at present, and various aeration technologies and equipment are developed at present, so that a good application effect is achieved. Research shows that the conventional aeration and oxygenation equipment usually performs aeration and oxygenation on the surface water body of the river, such as a fountain type aerator, a waterwheel type aerator, a surge type aerator and the like. Laying the gas pipeline and the aeration disc at the bottom layer of the river surge can solve the problems theoretically, but the implementation is difficult due to the problems that the silt of the river surge is deep, the water level of the river surge is deep and difficult to allocate and the like. The current aeration equipment of efflux aeration machine, plug flow mixer etc. to the water lower floor of application, nevertheless often because the silt of river lower floor is deep, equipment is difficult to fixed mounting, generally can only lean on the embankment edge to install, increases equipment power simultaneously, and to the central zone propelling movement of water, consume a large amount of energy.

In view of the above technical problems of river regulation, it is necessary to develop a river regulation facility which is suitable for the current situation of urban black and odorous rivers, performs balanced oxygenation and reoxygenation, is suitable for easy degradation of industrial wastewater possibly occurring in the existing rivers, improves the biodegradability of the industrial wastewater, and is also easy to install and maintain.

Disclosure of Invention

In order to solve the problems in the prior art, the invention aims to provide an iron-carbon micro-electrolysis black and odorous water body treatment device and process, which can effectively eliminate the black and odorous condition of a water body of a canyon-xia-yu river channel, restore the oxygenation and oxygenation of the bottom layer of the water body of the river channel and activate the activity of aerobic microorganisms on a mud-water interface of the bottom layer of the canyon through exchange of the bottom layer water body and a surface layer water layer of the river channel, establish a facultative bacteria layer zone, improve the micro-electrolysis treatment effect by combining with the application of iron-carbon micro-electrolysis, increase the corrosion potential of iron and promote the corrosion potential of Fe³⁺The generation of the flocculant promotes the flocculation and precipitation of suspended pollutants in the polluted water body, strengthens the transparency of the river processing water body, quickly improves the river water quality and restores the ecological system of the river channel.

The technical scheme of the invention is as follows: the invention discloses an iron-carbon micro-electrolysis black and odorous water body treatment device, which comprises: lower floor's inlet tube, stainless steel box, integrated form air water hybrid pipeline, be provided with keg float, filler district in the stainless steel box, the keg float install in the internal both sides of stainless steel box, stainless steel box central authorities are provided with the immersible pump water tank, the filler district sets up between immersible pump water tank and keg float, the filler district is provided with the little electrolysis of iron carbon and packs, install the immersible pump in the immersible pump water tank, the immersible pump water tank is connected lower floor's inlet tube, the delivery port of immersible pump is connected and is installed integrated form air water hybrid pipeline.

The submersible pump pumps water from the lower layer of the river surge in the submersible pump water tank to enter the integrated gas-water mixing pipeline for gas-water mixing aeration oxygenation. By adopting the design, the connecting pipeline of the submersible pump output is small, the frictional resistance of water flow in the pipeline is small, and the caused lift loss is small, so that a water pump with small lift can be selected, and the power consumption is saved under the same water pump water flow.

The water inlet of the lower layer water inlet pipe is adjusted to a position about 30cm away from the bottom sludge of the river, the bottom sludge is not disturbed when the water in the lower layer of the river is sucked, and excessive release of pollutants in the bottom sludge is prevented.

The submersible pump is arranged in the submersible pump water tank, and the pump body of the submersible pump is submerged by water in the submersible pump water tank so as to be beneficial to heat dissipation when the submersible pump operates;

further, integrated form air water hybrid tube comprises air water hybrid tube one, connecting pipe, air water hybrid tube two, the two intermediate positions of air water hybrid tube pass through the three-way pipe and connect elbow pipe one end, and the inlet tube one is connected to the elbow pipe other end, and inlet tube one passes through swing joint and connects inlet tube two, and inlet tube two is connected with the immersible pump delivery port, air water hybrid tube one, connecting pipe, three-way pipe, elbow pipe, inlet tube one, inlet tube two form U type pipeline, the both ends of integrated form air water hybrid tube are fixed through integrated form air water hybrid tube fixed stay frame.

Furthermore, an air inlet pipeline is installed in the second air-water mixing pipe, the air inlet pipeline penetrates through the position of the U-shaped pipeline in the middle of the second air-water mixing pipe and then is connected with a T-shaped air inlet, and the integrated air-water mixing pipe is made of PVC pipes.

The caliber of the air inlet pipeline is smaller than that of the air-water mixing pipe II, the air inlet pipeline is arranged in the middle of the inner part of the air-water mixing pipe II, the air inlet pipeline is connected with the T-shaped air inlet, two air sources are reserved in the T-shaped air inlet to enter the air-water mixing pipe II for mixed aeration, if the T-shaped air inlet can input a pure oxygen source on one side, and a compressed air source on the other side, the air quantity proportion of the input air source is adjusted through the adjusting valve, so that the proper requirement is obtained. If the air quantity of the input air source is adjusted by the adjusting valve, the appropriate requirement can be obtained. When the device is used as pure oxygen source or other gas source, it is generally liquid gas source for convenient transportation, and when the liquid oxygen is converted into gas state, it needs to absorb heat for gasification. The device installs the admission line in the middle of the two inside of air water hybrid tube, and the water that extracts through the immersible pump keeps apart a section distance with the balanced transport of admission line pipe wall, and the temperature of water and the temperature of gas are transmitted balanced each other, improve the gasification of liquid oxygen source to improve aeration oxygenation's effect.

Furthermore, the stainless steel box body is composed of a top stainless steel hydrophobic net steel plate, left and right side stainless steel plates, front and back side stainless steel plates and a bottom stainless steel hydrophobic net steel plate. Drop water at the outlet of the integrated gas-water mixing pipeline falls on the top stainless steel hydrophobic net steel plate of the stainless steel box body, the water body is soaked through the iron-carbon micro-electrolysis filler, and the water body flows out of the bottom hydrophobic net steel plate of the stainless steel box body to the upper water body of the river after being treated by the top hydrophobic net steel plate.

Further, the distance between the outlet of the integrated gas-water mixing pipeline and the top stainless steel hydrophobic net steel plate is 50 cm.

Through integrated form air water hybrid tube is venturi structure pipeline design, the inlet line concealed mounting of small-bore is in two central authorities of air water hybrid tube, the pressure differential of vacuum and environment through the partial formation of the section of narrowing of pipeline, and absorb the air through the intake pipe, carry out the sufficient shear-compression of air water and mix in the pipeline part after the section of narrowing of air water hybrid tube two, the export of air water hybrid tube is apart from iron carbon micro electrolysis black and odorous water processing apparatus's stainless steel box top layer 50cm, the mixed water of air water hybrid tube one spills at stainless steel box top layer with the drop form, blow off the ammonia of part in the water naturally with the form of drop, alleviate the denitrogenation load of river water system.

Furthermore, an artificial lawn is paved on the top stainless steel hydrophobic net steel plate, and a plurality of disks of plants can be placed on the artificial lawn for decoration.

Further, the specification of the iron-carbon filler is as follows: the filler particles are composed of 30% and 70% of iron-carbon particles with diameters of 30mm and 50mm, the iron content is 60% -70%, and the porosity is more than or equal to 45%.

The structural design can prevent the iron-carbon filler from being easily hardened under the condition of enlarging the contact area of the iron-carbon filler and the water body as much as possible.

Furthermore, two handles are arranged on the stainless steel plates on the left side and the right side and used for installing and fixing the device.

Further, still including the magnetism box, the magnetism box passes through stainless steel support and installs immersible pump water tank top and be higher than the top layer of stainless steel box.

By adopting the structural design of the magnetic box, a high-voltage electrode can be added in the air inlet process, after air passes through an electric field formed by the electrode, partial oxygen molecules in the air inlet are ionized and decomposed and then combined into ozone gas, and the ozone gas has higher oxidizing property than oxygen gas.

The invention also discloses a process for treating the black and odorous water body, which adopts the iron-carbon micro-electrolysis black and odorous water body treatment device to treat the black and odorous water body, and comprises the following specific steps:

s1, firstly, installing the iron-carbon micro-electrolysis black and odorous water body treatment device on a river surface of black and odorous water body to be treated;

s2, aerating and oxygenating water: starting the iron-carbon micro-electrolysis black and odorous water body treatment device to operate, sucking the river water body from the bottom layer of the river, entering a submersible pump water tank through a lower water inlet pipe, entering an integrated gas-water mixing pipeline through the submersible pump, and carrying out mixed air oxygenation treatment;

s3, drop ammonia stripping treatment: the iron-carbon micro-electrolysis black and odorous water treatment device performs air-water mixing by charging air into the integrated air-water mixing pipeline for oxygenation, and simultaneously, water flows out from the outlet of the integrated air-water mixing pipeline to form a height drop with the top stainless steel hydrophobic steel plate to form a natural air ammonia stripping device for performing denitrification treatment on the black and odorous water;

s4, treating iron-carbon micro-electrolysis filler water: and (S3) the denitrified wastewater falls into the filler area, and after the iron-carbon micro-electrolysis filler water treatment is carried out in the filler area, the water flows out to reach the upper layer of the river water body to complete the replacement of the upper and lower water layers of the river.

The working principle is as follows: because the floating barrel is arranged in the iron-carbon micro-electrolysis black and odorous water body treatment device, the device can be arranged on the upper surface of the river water body in a floating mode during working, and after the running device is started, the river water body is sucked from the bottom layer of the river water body → passes through the lower water inlet pipe → enters the submersible pump water tank → the submersible pump → the integrated air-water mixing pipeline is subjected to mixed air oxygenation treatment → the air-water mixing pipeline is discharged water → water drop ammonia stripping treatment → iron-carbon filler micro-electrolysis treatment → finally water flows out → reaches the upper layer of the river water body, and the replacement of the upper and lower water layers of the river water body is completed.

The iron-carbon micro-electrolysis black and odorous water body treatment device has the advantages of being balanced in aeration and oxygenation of the water body, inhibiting blue-green algae aeration of the water body, oxidizing pollutants released by water body bottom mud, reducing generation of blackening and odorous substances, adapting to degradation of industrial wastewater in the water body, and improving biodegradability of the water body, is easy to install, maintain and manage, is simple to operate, is flexible to move in water bodies such as rivers and lakes, can achieve expected treatment effects by controlling operation time and operation positions, matching with release of microbial agents and the like, and overcomes the defects of low treatment efficiency and high energy consumption caused by environmental factor restriction in the conventional in-situ treatment technology of the rivers.

The iron-carbon micro-electrolysis black and odorous water body treatment device has the main functions of replacing and treating an upper water layer and a lower water layer of a river; ② the aeration and oxygenation treatment function of the river water body; thirdly, the iron-carbon micro-electrolysis treatment function of the river water body; and fourthly, blowing off ammonia from the river water body.

The replacement and treatment functions of the upper and lower water layers of the river are as follows: the replacement treatment of the upper and lower water layers of the river can fill dissolved oxygen into the water body at the bottom layer of the river, oxidize black and odor-causing substances generated in the anaerobic and anoxic state of the bottom layer of the river, and quickly change the black and odor river condition of the water body. Little black smelly water processing apparatus of electrolysis of iron carbon takes out the water of the nearly muddy water interface department of river lower floor to upper water through lower floor's inlet tube, accomplish the change of water layer about the river, and the immersible pump is then installed in the immersible pump water tank of the stainless steel box central point of the water surface of floating, float in the water upper strata, make the maintenance of immersible pump, the maintenance, the installation all become more convenient and fast, the installation sets up like this of immersible pump simultaneously, the pump body is shorter apart from the pipeline route of water lower floor, it is nearer apart from the river water surface, can select the product that the lift is less in the water pump specification, the less product of power, thereby reduced the power consumption of device whole operation, the energy has been saved greatly. The overall energy consumption of the project is reduced, the construction and operation cost is greatly reduced, if the power consumption of the project which is reported to a power supply department is reduced, the capacity of a power transformation and transformation device is reduced, the diameter and the diameter of a cable wire laid during construction are reduced, the energy consumption cost of project operation consumables is reduced, and the project overall saves a large amount of cost for the construction operation of the project while responding to energy-saving and low-carbon policies conducted by governments.

Secondly, the aeration and oxygenation functions of the river water body are as follows: the aeration oxygenation is realized through an integrated gas-water mixing pipeline, air is sucked through a Venturi structure of the integrated gas-water mixing pipeline, and the air and the water are mixed and sheared to oxygenate the water body. The water body aeration oxygenation accelerates the water body reoxygenation process, so that the water body is in an aerobic state, the activity of aerobic microorganisms is improved, an environment mainly comprising facultative bacteria is formed on the surface layer of the river bottom sediment, and the biochemical self-purification capacity of the water body is improved. Improving the dissolved oxygen of the water body, quickly oxidizing the black and odorous toxic substances such as hydrogen sulfide, iron sulfide, methyl mercaptan and the like generated during the anaerobic degradation of organic matters in the water body, and improving the black and odorous conditions of the water body.

③ the iron-carbon micro-electrolysis treatment function of the river water body: the iron-carbon micro-electrolysis wastewater treatment mainly comprises the steps of mixing scrap iron and active granular carbon to form a filler, taking the charged wastewater as an electrolyte solution, forming a micro primary battery by using the scrap iron and granular carbon components, taking iron with low potential as a soluble anode and carbon as a cathode to form a positive electrode and a negative electrode in electrochemical reaction, carrying out oxidation-reduction reaction in wastewater, forming current through discharge to carry out electrolytic oxidation and reduction treatment on the wastewater, and treating the wastewater by using the filled micro-electrolysis filler to generate a micro primary battery effect under the condition of no power supply; when the iron-carbon micro-electrolysis black and odorous water body treatment device is filled with water, an infinite number of tiny primary batteries are formed in the device by utilizing the electrode potential difference between iron and carbon. The reaction process comprises the steps of galvanic reaction, oxidation-reduction reaction, electrochemical adsorption, physical adsorption, flocculation adsorption and iron ion precipitation. At present, the iron-carbon micro-electrolysis wastewater treatment technology is mainly applied to the treatment of high-concentration refractory organic wastewater so as to achieve the aims of reducing COD and improving biodegradability.

The iron-carbon micro-electrolysis black and odorous water body treatment device combines the shape of iron-carbon micro-electrolysis filler by aeration and oxygenation of the water bodyThe in-situ micro-electrolysis treatment is carried out on the polluted water body, the corrosion potential of iron can be increased by combining the iron-carbon micro-electrolysis with the aeration and oxygenation of the water body, and the Fe is promoted³⁺Due to the generation of Fe, the micro-electrolysis treatment effect is improved³⁺Stable, forms hydroxyl complex in polluted water and exists in colloid state, so Fe³⁺The addition of the compound promotes the flocculation and precipitation of suspended pollutants in the polluted water body, and enhances the transparency of the river processing water body.

Fourthly, the ammonia stripping treatment function of the river water body: the iron-carbon micro-electrolysis black and odorous water body treatment device is characterized in that air is filled into the integrated gas-water mixing pipeline for oxygenation, gas-water mixing is carried out, a drop design is adopted at the outlet of the gas-water mixing pipeline, a natural air ammonia stripping device is formed, the ammonia stripping device is used when the river gushing water body is black and odorous and the concentration of ammonia and nitrogen in river gushing sewage is high, and the denitrification effect is obvious. In the initial stage of black and odorous river control, natural air ammonia stripping is formed, the denitrification load of a water system is reduced, and the ecological recovery of a river water environment is accelerated. The ammonia stripping is the most main denitrification way of microorganisms in the river water environment before the nitrification-denitrification link is recovered, and the denitrification load of a water system can be reduced after the ecological recovery of the river water system.

The invention has the beneficial effects that:

the device is designed with a submersible pump water tank, a submersible pump is arranged in the submersible pump water tank, the water body covers a submersible pump body and floats on the water surface, the flowing water body dissipates heat of the water pump body, the submersible pump water tank is connected with a lower water inlet pipe, after water in the submersible pump water tank is pumped away, the water body entering the lower layer of the river is supplemented by the lower water inlet pipe, an outlet of the submersible pump is connected with an integrated air-water mixing pipeline, and the submersible pump pumps the water in the water tank from the lower layer of the river to enter the integrated air-water mixing pipeline for air-water mixing aeration. The device is designed to pump the lower layer water body of the river to the upper layer of the river while aerating and oxygenating, and carry out interlayer circulation exchange on the upper layer water body and the lower layer water body of the river, thereby improving the anoxic condition of the lower layer water body of the river, changing the habitat of blue algae and inhibiting the outbreak of the blue algae.

The application of the device can maintain the dissolved oxygen of the river reach at a level of about 5mg/L, the chemical oxygen demand at a level of about 31.9mg/L on average, and the removal rate of the chemical oxygen demand is about 37.2 percent. The ammonia nitrogen in the river reach is maintained at about 1.9mg/L, the ammonia nitrogen removal rate is about 44.7%, and the application of the device has obvious effects of improving the dissolved oxygen level of the water body, removing the chemical oxygen demand of the water body and removing the ammonia nitrogen.

In conclusion, the iron-carbon micro-electrolysis black and odorous water body treatment device can effectively eliminate the black and odorous condition of the water body of the canyon river course, exchanges the bottom water body of the river course with the surface water layer, recovers oxygenation and oxygenation to the bottom water body of the river course and activates the activity of aerobic microorganisms at the mud-water interface of the bottom water layer of the river course, establishes a facultative bacteria layer belt, and simultaneously combines the application of iron-carbon micro-electrolysis, enhances the micro-electrolysis treatment effect by aeration and oxygenation, increases the corrosion potential of iron, and promotes Fe³⁺The method promotes the flocculation and precipitation of suspended pollutants in the polluted water body, strengthens the transparency of the river processing water body, improves the water quality of the river quickly and restores the ecological system of the river channel.

Drawings

FIG. 1 is a partial view of a three-dimensional structure of the present invention;

FIG. 2 is a second partial perspective view of the present invention;

FIG. 3 is a schematic view of the structure of the integrated gas-water mixing pipeline and the submersible pump tank body part of the invention;

FIG. 4 is a schematic view of the structure of the integrated gas-water mixing pipeline of the present invention;

wherein, 1-a lower layer water inlet pipe, 2-a stainless steel box body, 21-a floating barrel, 22-a filling area, 23-a top layer stainless steel hydrophobic net steel plate, 24-a bottom layer stainless steel hydrophobic net steel plate, 25-a handle, 3-an integrated gas-water mixing pipeline, 30-a T-shaped gas inlet, 31-a gas-water mixing pipe I, 32-a connecting pipe, 33-a gas-water mixing pipe II, 34-a three-way pipe, 35-a bent pipe, 36-a water inlet pipe I, 37-a movable connector, 38-a water inlet pipe II, 39-a gas inlet pipeline, 4-a submersible pump water tank, 5-a submersible pump and 6-an artificial lawn; 7-magnetic box, 8-stainless steel bracket, 9-integrated gas-water mixing pipeline fixing support frame.

Detailed Description

The invention will be further illustrated and understood by the following non-limiting examples.

Example 1

As shown in fig. 1-4, the technical solution of the present invention is: the utility model provides a black smelly water processing apparatus of little electrolysis of iron carbon, includes: lower floor's inlet tube 1, stainless steel box 2, integrated form air water hybrid pipeline 3, be provided with keg float 21 in the stainless steel box 2, filler district 22, keg float 21 installs the left and right sides in stainless steel box 2, keg float 21 has four, each two in the left and right sides, 2 central authorities of stainless steel box are provided with immersible pump water tank 4, filler district 22 sets up between immersible pump water tank 4 and keg float 21, filler district 22 is provided with the little electrolysis of iron carbon and packs, install immersible pump 5 in the immersible pump water tank 4, immersible pump water tank 4 connects lower floor's inlet tube 1, integrated form air water hybrid pipeline 3 is installed in immersible pump 5's delivery port connection.

The water inlet of the lower layer water inlet pipe 1 is adjusted to a position about 30cm away from the bottom sludge of the river surge, the bottom sludge is not disturbed when the water in the lower layer of the river surge is sucked, and the excessive release of pollutants in the bottom sludge is prevented.

The submersible pump 5 is installed in the submersible pump water tank 4, and the pump body of the submersible pump 5 is submerged by water in the submersible pump water tank 4, so that heat dissipation during operation of the submersible pump 5 is facilitated;

further, integrated form air water hybrid tube 3 comprises air water hybrid tube one 31, connecting pipe 32, air water hybrid tube two 33, the elbow pipe 35 one end is connected through three-way pipe 34 to air water hybrid tube two 33 intermediate position, and inlet tube one 36 is connected to the elbow pipe 35 other end, and inlet tube one 36 passes through swing joint 37 and connects inlet tube two 38, and inlet tube two 38 is connected with immersible pump 5 delivery port, air water hybrid tube one 31, connecting pipe 32, three-way pipe 34, elbow pipe 35, inlet tube one 36, inlet tube two 37 form U type pipeline, the both ends of integrated form air water hybrid tube 3 are fixed through integrated form air water hybrid tube fixed stay 9.

An air inlet pipeline 39 is installed in the second air-water mixing pipe 33, the T-shaped air inlet 30 is connected to the air inlet pipeline 39 after penetrating through the U-shaped pipeline in the middle of the second air-water mixing pipe 33, and the integrated air-water mixing pipeline 3 is made of PVC pipes.

Further, the stainless steel box body is composed of a top stainless steel hydrophobic net steel plate 23, side stainless steel plates and a bottom stainless steel hydrophobic net steel plate 24, water drops at the outlet of the integrated gas-water mixing pipeline 3 fall on the top stainless steel hydrophobic net steel plate 23 of the stainless steel box body 2, the water penetrates through the top stainless steel hydrophobic net steel plate 23, the water is soaked in the iron-carbon micro-electrolysis filler, and the water flows out of the bottom hydrophobic net steel plate 24 of the stainless steel box body to the upper water body of the river after being treated by the top hydrophobic net steel plate 23.

Further, the distance between the outlet of the integrated gas-water mixing pipeline 3 and the top stainless steel hydrophobic net steel plate is 50 cm.

The integrated gas-water mixing pipeline is designed into a Venturi structure pipeline, the small-caliber gas inlet pipeline 39 is mounted at the middle position inside the second gas-water mixing pipe 33 in a concealed mode, the pressure difference between the vacuum degree formed by the narrowing section of the pipeline and the environment is passed, air is absorbed through the gas inlet pipeline 39, gas-water sufficient shearing and pressing mixing is carried out in the pipeline part behind the narrowing section of the second gas-water mixing pipe 33, the distance between the outlet of the first gas-water mixing pipe 31 and the top layer of the stainless steel box body of the iron-carbon micro-electrolysis black and odorous water body treatment device is 50cm, gas-water mixed water of the first gas-water mixing pipe 31 is sprayed on the top layer of the stainless steel box body in a drop mode, ammonia in the part of the water body is naturally blown off in the drop mode, and the denitrification load of a river water system is reduced.

Further, an artificial lawn 6 is laid on the top stainless steel hydrophobic net steel plate 23.

Further, the specification of the iron-carbon filler is as follows: the filler particles are composed of 30% and 70% of iron-carbon particles with diameters of 30mm and 50mm, the iron content is 60% -70%, and the porosity is more than or equal to 45%.

Furthermore, two handles 25 are arranged on the stainless steel plates on the left side and the right side for installing and fixing the device.

The installation is as follows: firstly, two stainless steel pipes are arranged in the river or lake where the iron-carbon micro-electrolysis black and odorous water treatment device needs to be arranged, then the iron-carbon micro-electrolysis black and odorous water treatment device is placed between the two stainless steel pipes, and the fixing belt penetrates through one lifting handle 25 on the stainless steel plates on the left side and the right side of the stainless steel box body and then is tied to the two stainless steel pipes for fixing.

Further, black smelly water processing apparatus of indisputable carbon microelectrolysis is still including magnetism box 7, and magnetism box 7 passes through stainless steel support 8 to be installed in 4 tops of immersible pump water tank and the top layer that exceeds stainless steel box 2.

The invention also discloses a process for treating the black and odorous water body, which adopts the iron-carbon micro-electrolysis black and odorous water body treatment device to treat the black and odorous water body, and comprises the following specific steps:

s1, firstly, installing the iron-carbon micro-electrolysis black and odorous water body treatment device on a river surface of black and odorous water body to be treated;

s2, aerating and oxygenating water: starting the iron-carbon micro-electrolysis black and odorous water body treatment device to operate, sucking the river water body from the bottom layer of the river, entering a submersible pump water tank through a lower water inlet pipe, entering an integrated gas-water mixing pipeline through the submersible pump, and carrying out mixed air oxygenation treatment;

s3, drop ammonia stripping treatment: the iron-carbon micro-electrolysis black and odorous water treatment device is characterized in that air is filled into the integrated air-water mixing pipeline for oxygenation, and when air-water mixing is carried out, water flows out of an outlet of the integrated air-water mixing pipeline and forms a height drop with a top stainless steel hydrophobic steel plate to form a natural air ammonia stripping device for denitrification treatment of the black and odorous water;

s4, treating iron-carbon micro-electrolysis filler water: and (S3) the denitrified wastewater falls into the filler area, and after the iron-carbon micro-electrolysis filler water treatment is carried out in the filler area, the water flows out to reach the upper layer of the river water body to complete the replacement of the upper and lower water layers of the river.

The working principle is as follows: because the floating barrel device is installed in the iron-carbon micro-electrolysis black and odorous water body treatment device, the device can be floated on the upper surface of the river water body when in work, and after the operation device is started, the river water body is sucked from the bottom layer of the river → passes through the lower water inlet pipe → enters the submersible pump water tank → the submersible pump → the integrated gas-water mixing pipeline is subjected to mixed air oxygenation treatment → the gas-water mixing pipeline is discharged water → water drop ammonia is blown off, iron-carbon filler micro-electrolysis treatment → finally water flows out → reaches the upper layer of the river water body, and the replacement of the upper and lower water layers of the river is completed.

The second embodiment provides a test and a method for black and odorous water treatment by using the iron-carbon micro-electrolysis black and odorous water body treatment device provided in the first embodiment, and river surge treatment is implemented.

The test river section is south-facing gush of a great street in a cis-country, the test area starts from a south-facing water gate to the junction of south-facing south road and south-facing new road, the length of the gush is about 1.08 kilometers, the average width of the river surface is about 11 meters, the water depth of the river channel is 1.2 meters to 2.2 meters, and the average thickness of bottom mud is about 0.5 meter. According to the field investigation, factories and residential areas are distributed along the south Xiagong line. A market is arranged near the river, various sewage generated by nearby factories and markets is directly discharged into the river, and pollutants are accumulated continuously, so that the pollution is one of the causes of the river pollution. The river belongs to a typical Zhujiang river basin heavily polluted river channel, the black and odorous phenomenon is obvious, and bottom mud pollutants mainly comprise organic matters, nutrient salts and sulfides.

According to the published data, the discharge capacity of the black smelly water discharged into the south blush is 248968 cubic meters of the black smelly water discharged into the south blush every year, the discharge capacity of the black smelly water discharged into the south blush is about 700 cubic meters every day, and the maximum pollutant receiving capacity of the south blush water environment restoration design sewage is 1400 cubic meters every day, so that the requirement of 700 cubic meters of sewage discharged into the south blush every day is met.

The test project carries out the iron-carbon micro-electrolysis black and odorous water body treatment device repair test in a river section of the south Xiaguan river channel of the great quality of the cis-De. The effect of the iron-carbon micro-electrolysis black and odorous water body treatment device on water quality improvement in the application of practical engineering is researched through water quality indexes such as dissolved oxygen, chemical oxygen demand and ammonia nitrogen of the canyon gush river channel before and after the installation and operation of the monitoring device.

The test project is that 3 sampling points are arranged along a river course in a test area, namely a south Xiagong upstream water sampling point and a south Xiagong tail 5 municipal sewage interception clap doors are arranged 800 meters away; the midstream water collection point of the south Xiagu is 300 meters to 800 meters away from the 5 municipal sewage interception clap gates of the south Xiagu tail; the downstream water collection point of the eucryptian is 5 municipal sewage interception clappers 100-300 meters away from the eucryptian;

test river gush area early-stage investigation sampling detection result table

River surge sampling point	PH	Dissolved oxygen (mg/L)	Chemical oxygen demand (mg/L)	Five-day biochemical oxygen demand (mg/L)	Ammonia nitrogen (mg/L)	Total phosphorus (mg/L)	Transparency (cm)
								Nanxia gushing water gate	7.1	2.3	43.87	10.47	2.82	0.54	22
South Xiagong midstream	6.8	1.67	52.21	15.53	3.66	1.69	19
								South Xiagong terminal point	7.12	1.15	56.20	18.11	3.82	1.90	10
Surface class V water standard limit	6-9	≥2.0	≤40	≤10	≤2.0	≤0.4	/

The specification of the iron-carbon micro-electrolysis black and odorous water body treatment device is as follows:

the overall dimensions are 1220mm long, 850mm wide and 440mm high;

power of the water pump: 2.2kw, 220V;

pump lift: 7 m;

water changing amount is 4000L/H (water amount is 40 cubic meters per hour);

particle filler: the filler particles consist of 30 percent and 70 percent of 30mm and 50mm diameter iron-carbon particles, 60 percent to 70 percent of iron content and more than or equal to 45 percent of porosity; the amount of the filler: 100 kg;

the number of devices: the total number of the devices is 20, and 1 device is arranged every 50 meters along the river;

the experimental results are as follows:

before the device is not operated, the integral dissolved oxygen level of the river reach is very low and is less than 2 mg/L. After the equipment is operated for 18 days, the dissolved oxygen of the river reach can be maintained at a level of about 5mg/L, and the operation device has an obvious effect of improving the dissolved oxygen level of the water body.

The overall cod level at the river front was higher without operating the plant, averaging 50.76 mg/L. After the device is operated for 18 days, the chemical oxygen demand of the river reach can be averagely maintained at a level of about 31.9mg/L, the removal rate of the chemical oxygen demand is about 37.2 percent, and the operation device has obvious effect on removing the chemical oxygen demand of the water body.

Before the device is not operated, the whole ammonia nitrogen level of the river reach is higher and is averagely 3.44 mg/L. After the device is operated for 18 days, the ammonia nitrogen in the river reach can be maintained at a level of about 1.9mg/L, and the ammonia nitrogen removal rate is about 44.7 percent. Therefore, the operation device has obvious effect on removing ammonia nitrogen.

Practice proves that the iron-carbon micro-electrolysis black-odor water body treatment device can effectively eliminate the black and odor condition of the water body of the eucrypti gushing river channel, through exchange between the water body at the bottom layer of the river channel and the water layer at the surface layer, the oxygenation and oxygenation at the bottom layer of the water body of the river channel are recovered, the activity of aerobic microorganisms at the mud-water interface at the bottom layer of the river channel is activated, a facultative bacteria layer zone is established, and meanwhile, by combining the application of iron-carbon micro-electrolysis, the aeration and oxygenation improve the micro-electrolysis treatment effect, the corrosion potential of iron is increased, and Fe is promoted³⁺The method promotes the flocculation and precipitation of suspended pollutants in the polluted water body, strengthens the transparency of the river processing water body, improves the water quality of the river quickly and restores the ecological system of the river channel. Meanwhile, according to the application of the technology, phenomenon investigation is carried out according to the treatment target of the river, the pollution condition of the water body and the bottom mud on the site of the river, water body and bottom mud samples are collected, and a water body and bottom mud oxygen consumption test is carried out in a laboratory, so that the oxygen consumption of the river water body is estimated and calculated, and the number and the installation positions of the iron-carbon micro-electrolysis black and odorous water body treatment devices are designed and arranged. The iron-carbon micro-electrolysis black and odorous water body treatment device technology has wide application prospects in urban middle and small river pollution control.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way and substantially, and all technical solutions falling within the spirit of the present invention are considered to be within the scope of the present invention.

Claims (9)

1. The utility model provides a black smelly water processing apparatus of little electrolysis of iron carbon which characterized in that includes: lower floor's inlet tube (1), stainless steel box (2), integrated form air water hybrid pipeline (3), be provided with keg float (21), filler district (22) in stainless steel box (2), keg float (21) install in left and right sides in stainless steel box (2), stainless steel box (2) central authorities are provided with immersible pump water tank (4), filler district (22) sets up between immersible pump water tank (4) and keg float (21), filler district (22) is provided with the little electrolysis of iron carbon and packs, install immersible pump (5) in immersible pump water tank (4), immersible pump water tank (4) are connected lower floor's inlet tube (1), the delivery port of immersible pump (5) is connected and is installed integrated form air water hybrid pipeline (3).

2. The iron-carbon micro-electrolysis black and odorous water body treatment device according to claim 1, the integrated gas-water mixing pipeline (3) is of a Venturi pipeline structure and consists of a gas-water mixing pipe I (31), a connecting pipe (32) and a gas-water mixing pipe II (33), the middle position of the second gas-water mixing pipe (33) is connected with one end of an elbow pipe (35) through a three-way pipe (34), the other end of the elbow pipe (35) is connected with a first water inlet pipe (36), the first water inlet pipe (36) is connected with a second water inlet pipe (38) through a movable connector (37), the second water inlet pipe (38) is connected with a water outlet of the submersible pump (5), the first gas-water mixing pipe (31), the connecting pipe (32), the three-way pipe (34), the elbow pipe (35), the first water inlet pipe (36) and the second water inlet pipe (37) form a U-shaped pipeline, the two ends of the integrated gas-water mixing pipeline (3) are fixed through an integrated gas-water mixing pipeline fixing support frame (9).

3. The iron-carbon microelectrolysis black and odorous water body treatment device according to claim 2, wherein an air inlet pipeline (39) is installed in the second air-water mixing pipe (33), the T-shaped air inlet (30) is connected to the position, after the air inlet pipeline (39) penetrates through a U-shaped pipeline in the middle of the second air-water mixing pipe (33), of the integrated air-water mixing pipeline (3), and the integrated air-water mixing pipeline is made of PVC pipes.

4. The iron-carbon micro-electrolysis black and odorous water treatment device according to claim 1, wherein the stainless steel box body (2) is composed of a top stainless steel hydrophobic net steel plate (23), left and right side stainless steel plates, front and rear side stainless steel plates and a bottom stainless steel hydrophobic net steel plate (24).

5. The iron-carbon microelectrolysis black and odorous water body treatment device is characterized in that the distance between the outlet of the integrated gas-water mixing pipeline (3) and the top stainless steel hydrophobic net steel plate (23) is 50 cm.

6. The iron-carbon micro-electrolysis black and odorous water body treatment device according to claim 1, wherein the specifications of the iron-carbon filler are as follows: the filler particles are composed of 30% and 70% of iron-carbon particles with diameters of 30mm and 50mm, the iron content is 60% -70%, and the porosity is more than or equal to 45%.

7. The iron-carbon micro-electrolysis black and odorous water body treatment device according to claim 4, wherein two handles (25) are arranged on the stainless steel plates on the left side and the right side.

8. The iron-carbon microelectrolysis black and odorous water body treatment device according to claim 1, further comprising a magnetic box (7), wherein the magnetic box (7) is installed above the submersible pump water tank (4) through a stainless steel bracket (8) and is higher than the top layer of the stainless steel tank body (2).

9. A black and odorous water body treatment process is characterized in that the iron-carbon micro-electrolysis black and odorous water body treatment device according to any one of claims 1 to 8 is adopted for black and odorous water body treatment, and the specific steps are as follows:

s1, firstly, installing the iron-carbon micro-electrolysis black and odorous water body treatment device on a river surface of black and odorous water body to be treated;

s2, aerating and oxygenating water: starting the iron-carbon micro-electrolysis black and odorous water body treatment device to operate, sucking the river water body from the bottom layer of the river, entering a submersible pump water tank through a lower water inlet pipe, entering an integrated gas-water mixing pipeline through the submersible pump, and carrying out mixed air oxygenation treatment;

s3, drop ammonia stripping treatment: the iron-carbon micro-electrolysis black and odorous water treatment device performs air-water mixing by charging air into the integrated air-water mixing pipeline for oxygenation, and simultaneously, water flows out from the outlet of the integrated air-water mixing pipeline to form a height drop with the top stainless steel hydrophobic steel plate to form a natural air ammonia stripping device for performing denitrification treatment on the black and odorous water;

s4, treating iron-carbon micro-electrolysis filler water: and (S3) the denitrified wastewater falls into the filler area, and after the iron-carbon micro-electrolysis filler water treatment is carried out in the filler area, the water flows out to reach the upper layer of the river water body to complete the replacement of the upper and lower water layers of the river.

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