CN203079786U - Wastewater zero discharging advanced treatment system - Google Patents

Abstract

The utility model relates to a sewage treatment system, which provides a sewage treatment system with a reasonable structure design, which can effectively degrade color-causing substances in water, has a high removal rate of organic matter in water, has good biodegradability of sewage, can be fully recycled in production, and realizes zero discharge to the outside world. The wastewater zero-discharge advanced treatment system includes a sump, a reaction tank, a magnetic separator, a micro-electrolytic precipitation tower, and a return pool. The outlet of the sump is connected to the inlet of the reaction tank, and the outlet of the reaction tank is connected to the inlet of the magnetic separator. , the drainage hole of the magnetic separator is connected with the water inlet of the micro-electrolytic precipitation tower, and the water outlet of the micro-electrolytic precipitation tower is connected with the water inlet of the backwater pool, and the water inlet is located below the water inlet in the backwater pool. Density fiber filament layer.

Description

Wastewater zero discharge advanced treatment system

technical field

The utility model relates to a sewage treatment system, in particular to a zero-discharge advanced treatment system for waste water. the

Background technique

The amount of sewage discharged in our country is very large every year, and the amount discharged after treatment is not much, which has caused great damage to the environment. All major water systems in our country have produced varying degrees of pollution, and the water environment has seriously deteriorated. For a long time, papermaking wastewater has been one of the problems restricting the rapid development of the paper industry, and how to deal with papermaking wastewater is also a concern of everyone. Therefore, it is very necessary to strengthen sewage treatment so that it not only discharges up to the standard, but also can be reused in large quantities. In this way, it is very important to eliminate pollution, improve the water environment, alleviate the shortage of water resources, save precious water resources, and promote the development of environmental protection industries. the

Water treatment is to use physical, chemical and biological methods to treat wastewater, purify wastewater, reduce pollution, and achieve wastewater recycling and reuse, making full use of water resources. The existing sewage treatment system cannot effectively degrade the color-causing substances in the water, the removal rate of organic matter in the water is low, the foaming phenomenon of the treated wastewater is serious, the effluent color is deep, the color of high-concentration sewage cannot be removed, the COD removal rate is low, and the treatment The recycled water obtained is easy to deteriorate and smelly, and cannot be recycled for a long time. The biodegradability of the sewage is low, and the COD in the sewage is often discharged beyond the standard. the

Utility model content

Therefore, in view of the above problems, the utility model provides a reasonable structure design, which can effectively degrade color-causing substances in water, has a high removal rate of organic matter in water, and has good biodegradability of sewage, which can be fully recycled in production, and realizes zero external pollution. The discharged wastewater is zero-discharge advanced treatment system. the

In order to achieve the above purpose, the utility model is achieved through the following technical solutions: a waste water zero discharge advanced treatment system, including a sump, a reaction tank, a magnetic separator, a micro-electrolytic precipitation tower and a return pool, the outlet of the sump is connected to a reaction The inlet of the tank, the outlet of the reaction tank is connected to the inlet of the magnetic separator, the drain hole of the magnetic separator is connected to the water inlet of the micro-electrolytic precipitation tower, and the water outlet of the micro-electrolytic precipitation tower is connected to the water inlet of the return pool Connected, a high-density fiber filament layer is arranged below the water inlet in the return pool. the

A further improvement is: the micro-electrolytic precipitation tower includes a tower body, a tower cover arranged on the tower body and a sewage inlet pipe, the upper part of the tower body is provided with a water outlet, and the lower part of the tower body is provided with a sewage bucket, so The lower part of the sewage collection hopper is provided with a mud discharge port, and the middle part of the tower body is provided with a rapid sedimentation device for rapid sedimentation of solid particles. The tower body is located above the rapid sedimentation device. A buffer tank is located at the lower part of the rapid sedimentation device, and the outlet end of the sewage inlet pipe passes through the tower cover, the micro-electrolysis packing filter layer and the rapid sedimentation device in turn to connect with the buffer tank in the tower body, and the water inlet of the sewage inlet pipe Connect the drain hole of the magnetic separator. the

A further improvement is: the tower body is also provided with a biological filler layer on the upper part of the micro-electrolysis filler filter layer. the

It is further improved that: the filter layer of the micro-electrolytic packing includes a cylindrical body arranged on the inner wall of the tower body, the micro-electrolytic packing is arranged in the cylindrical body, and the upper part and the lower part of the cylindrical body are respectively provided with a filter. plates, and each of the filter plates is evenly distributed with water-through micropores. the

A further improvement is that: the rapid sedimentation device includes an outer cylindrical body arranged on the inside of the tower body and an inner cylindrical body arranged on the inner side of the outer cylindrical body, and the middle part is provided with an inner cylindrical body for inserting and perforating the sewage pipe, and the outer cylindrical body Between the cylinder body and the inner cylindrical cylinder body, a plurality of buffer sedimentation sloping plates are arranged obliquely and evenly in the radial direction. the

A further improvement is that: a water pump for pumping muddy water in the reaction tank to the magnetic separator is provided between the reaction tank and the magnetic separator, and a control valve is provided at the bottom of the reaction tank. the

A further improvement is: a water pump is provided between the magnetic separator and the micro-electrolytic precipitation tower to drive the sewage separated by the magnetic separator into the micro-electrolytic precipitation tower. the

By adopting the above-mentioned technical scheme, the beneficial effect of the utility model is: when the wastewater zero-discharge advanced treatment system of the utility model is processed, the sewage in production is first sent into the sump through the pipeline, and then the sewage in the sump is pumped into the reaction tank, add in order the agents that can complete the sedimentation of chromium, cyanide and heavy metals in the mud water, after full reaction, add magnetic powder, flocculant, and then stand for treatment, after standing for treatment, open the valve of the reaction tank, and pump the sludge into the magnetic The separator performs mud-water separation treatment. After the separation treatment, the supernatant in the magnetic separator is pumped into the micro-electrolysis precipitation tower for further biochemical treatment, thereby degrading the color-causing substances, suspended solids SS and COD in the wastewater, and further precipitating through the micro-electrolysis precipitation tower. And the sewage treated by micro-electrolysis enters the backwater pool for recycling. The high-density fiber silk layer in the backwater pool can further intercept the suspended solids and biological flocs in the water and improve the quality of the effluent; its structure design is reasonable, and the treatment process steps are simple. It can effectively degrade color-causing substances in water, has a high removal rate of organic matter in water, and has good biodegradability of sewage. It can effectively treat papermaking sewage, minimize environmental pollution, make it meet sewage discharge standards, and improve water recycling. Rate. the

Description of drawings

Fig. 1 is a schematic flow chart of the utility model embodiment. the

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings:

Example:

Referring to Fig. 1, the present embodiment discloses a waste water zero-discharge advanced treatment system, including a sump 1, a reaction tank 2, a magnetic separator 3, a micro-electrolytic precipitation tower 4 and a return pool 5, and the outlet of the sump 1 is connected to a reaction The inlet of the tank 2, the reagents that can completely precipitate chromium, cyanide and heavy metals in the sewage are added in order in the reaction tank, after fully reacting, then add magnetic powder and flocculant, and then stand for reaction, the inlet of the sump 1 is connected to the upper A process, its role is to collect, store and balance the water quality and water volume of papermaking wastewater, the outlet of the reaction tank 2 is connected to the entrance of the magnetic separator 3, and the reaction tank 2 is arranged between the reaction tank 2 and the magnetic separator 3 The inner muddy water is pumped to the water pump of the magnetic separator. The bottom of the reaction tank 2 is also equipped with a control valve 21. The magnetic separator 3 adopts magnetic separation. The sludge and clean water can be completely separated in only 3 minutes. The drain hole of separator 3 links to each other with the inlet of micro electrolytic precipitation tower 4, is provided with the water pump that the sewage separated by magnetic separator 3 is squeezed into micro electrolytic precipitation tower 4 between magnetic separator 3 and micro electrolytic precipitation tower 4, so The micro-electrolytic precipitation tower 4 includes a tower body 41, a tower cover 42 located on the tower body 41 and a sewage inlet pipe 43, the top of the tower body 41 is provided with a water outlet, and the bottom of the tower body 41 is provided with a sewage bucket 44 The bottom of the dirt collecting bucket 44 is provided with a mud outlet, and the middle part of the tower body 41 is provided with a quick sedimentation device 45 for rapid sedimentation of solid particles. An electrolytic filler filter layer 46, the tower body 41 is located at the bottom of the rapid sedimentation device 45 and is provided with a buffer tank 47, and the water outlet end of the sewage inlet pipe 43 passes through the tower cover 42, the micro-electrolytic filler filter layer 46 and the rapid sedimentation device in sequence 45 is connected to the buffer tank 47 in the tower body 41, the water inlet of the sewage inlet pipe 43 is connected to the drain hole of the magnetic separator 3, and the rapid sedimentation device 45 includes an outer cylindrical body 451 arranged on the inside of the tower body 41 and The inner cylindrical body 452 arranged in the middle of the outer cylindrical body 451 for the insertion of the sewage pipe 43 into the perforation, the outer cylindrical body 451 and the inner cylindrical body 452 are arranged obliquely and evenly in the radial direction There are a plurality of buffer sedimentation inclined plates 453, and the water outlet of the micro-electrolytic precipitation tower 4 is connected with the water inlet of the backwater pool 5, and a high-density fiber filament layer 51 is arranged below the water inlet in the backwater pool 5. After the wastewater is treated by the magnetic separator 3, it enters the sedimentation tower from the sewage inlet pipe, and after being buffered by the buffer tank, it diffuses to the surroundings, and then flows smoothly to the top of the tower. During the rising process of the sewage, solid suspended matter with a density greater than water, such as paper-making fillers Inorganic particles such as fine fibers, mud yarn, etc. sink continuously and pass through the rapid sedimentation device to accelerate the sedimentation. Every two buffer sedimentation inclined plates of the buffer sedimentation device are equivalent to a small sedimentation tank, which greatly shortens the particle sedimentation time. Using the principle of vertical flow to achieve the purpose of rapid sedimentation, the sewage flowing from the buffer sedimentation device flows into the recovery tank 5 from the outlet on the upper part of the tower body, and the high-density fiber filament layer in the return tank can further intercept the suspended solids and biological flocs in the water Body, improve water quality, the top of the micro-electrolysis filler filter layer 46 is also provided with a biological filler layer 48 in the tower body 41.

The micro-electrolysis filler filter layer 46 comprises a cylinder body arranged on the inner wall of the tower body 41, the micro-electrolysis filler is arranged in the cylinder body, and the upper and lower parts of the cylinder body are respectively provided with a filter plate. Each of the filter plates is evenly distributed with water-through micropores. The new wastewater zero-discharge advanced treatment system can use the micro-electrolytic material filled in the wastewater to generate a 1.2V potential difference to electrolyze the wastewater to achieve the purpose of degrading organic pollutants. After passing through the water, countless micro-battery systems will be formed in the micro-electrolysis packing cylinder, forming an electric field in its action space. The new ecology [H] and Fe ^{2 +} produced in the process of treatment can undergo redox reactions with many components in wastewater, such as chromophores or auxochromes that can destroy colored substances in colored wastewater, and even chain breaking to achieve degradation and decolorization; the generated Fe ^{2 +} is further oxidized to Fe ^{3 +} , and their hydrates have strong adsorption and flocculation activities, especially after adding alkali to adjust the pH value, ferrous hydroxide and hydrogen are formed Iron oxide colloidal flocculants, their adsorption capacity is much higher than that of ferric hydroxide colloids obtained by hydrolysis of general medicaments, and can absorb a large number of tiny particles, metal particles and organic macromolecules dispersed in water. Its working principle is based on electrochemistry, oxidation, reduction , physical adsorption and flocculation sedimentation to treat wastewater. It has the advantages of wide application range, good treatment effect, low cost, convenient operation and maintenance, and no need to consume power resources.

The above records are only examples of using the technical content of this creation. Any modifications and changes made by those who are familiar with this technology using this creation belong to the scope of patents claimed by this creation, and are not limited to those disclosed in the examples. the

Claims (7)

1. Wastewater zero-discharge advanced treatment system, characterized in that: it includes a sump, a reaction tank, a magnetic separator, a micro-electrolytic precipitation tower and a return pool, the outlet of the sump is connected to the inlet of the reaction tank, and the outlet of the reaction tank Connect the inlet of the magnetic separator, the drain hole of the magnetic separator is connected with the water inlet of the micro-electrolytic precipitation tower, the water outlet of the micro-electrolytic precipitation tower is connected with the water inlet of the return pool, and the return pool is located at the water inlet There is a layer of high-density fiber filaments underneath. 2. The wastewater zero-discharge advanced treatment system according to claim 1, characterized in that: the micro-electrolytic precipitation tower includes a tower body, a tower cover and a sewage inlet pipe arranged on the tower body, and the upper part of the tower body is provided with Water outlet, the lower part of the tower body is provided with a sewage collecting bucket, the lower part of the sewage collecting bucket is provided with a mud discharge port, the middle part of the tower body is provided with a rapid sedimentation device for rapid sedimentation of solid particles, and the rapid sedimentation device is located in the tower body A filter layer of micro-electrolysis packing is provided above the device, and a buffer tank is provided at the lower part of the rapid sedimentation device in the tower body. The buffer tanks in the tower body are connected to each other, and the water inlet of the sewage inlet pipe is connected to the drain hole of the magnetic separator. 3. The zero-discharge advanced treatment system for wastewater according to claim 2, characterized in that: the tower body is also provided with a biological filler layer on the upper part of the micro-electrolytic filler filter layer. 4. The wastewater zero-discharge advanced treatment system according to claim 2, characterized in that: the micro-electrolysis filler filter layer includes a cylindrical cylinder arranged on the inner wall of the tower body, and a micro-electrolysis filter is arranged in the cylindrical cylinder. As for the filler, the upper and lower parts of the cylinder body are respectively provided with filter plates, and each filter plate is evenly distributed with water-through micropores. 5. The wastewater zero-discharge advanced treatment system according to claim 2, characterized in that: the rapid sedimentation device includes an outer cylindrical body arranged on the inner side of the tower body and an outer cylindrical body arranged on the inner side of the outer cylindrical body. The sewage inlet pipe is inserted into the perforated inner cylindrical body, and a plurality of buffering and sedimentation sloping plates are arranged obliquely and evenly in the radial direction between the outer cylindrical body and the inner cylindrical body. 6. The waste water zero-discharge advanced treatment system according to claim 1, characterized in that: a pump for pumping muddy water in the reaction tank to the magnetic separator is provided between the reaction tank and the magnetic separator, and the reaction tank There is also a control valve at the bottom. 7. The waste water zero-discharge advanced treatment system according to claim 1, characterized in that: a water pump is provided between the magnetic separator and the micro-electrolytic precipitation tower to drive the sewage separated by the magnetic separator into the micro-electrolytic precipitation tower .

Images