CN203079812U - Advanced sewage treatment system with zero discharge - 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 and remove organic matter in water. The sewage has good biochemical properties and can be fully recycled in production to realize zero sewage discharge to the outside world. Advanced discharge treatment system, including sump, filter roller sieve machine, stirring reaction tower, magnetic separator, micro-electrolysis packing cylinder, biological contact oxidation tank, activated carbon filter and return pool, the outlet of the sump is connected to the inlet of the filter roller sieve machine , the outlet of the filter roller sieving machine is connected to the inlet of the stirring reaction tower, the outlet of the stirring reaction tower 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-electrolysis packing cylinder, and the water outlet of the micro-electrolysis packing cylinder is connected to the biological The water inlet of the contact oxidation tank, the water outlet of the biological contact oxidation tank is connected to the inlet of the activated carbon filter, and the outlet of the activated carbon filter is connected to the return pool. Packing filter layer, biological filler filter layer and high-density fiber silk filter layer.

Description

Sewage 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 sewage. 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 kind of reasonable structure design, which can effectively degrade the color-causing substances in the water, remove the organic matter in the water, the sewage has good biodegradability, can be completely recycled in production, and realize zero discharge of sewage to the outside world. Discharge advanced treatment system. the

In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions: sewage zero-discharge advanced treatment system, including sump, filter roller sieve machine, stirring reaction tower, magnetic separator, micro-electrolysis packing cylinder, biological contact oxidation pool, Activated carbon filter and return pool, the outlet of the sump is connected to the inlet of the filter roller sieve machine, the outlet of the filter roller sieve machine is connected to the inlet of the stirring reaction tower, and the outlet of the stirring reaction tower is connected to the inlet of the magnetic separator. The drainage hole of the magnetic separator is connected to the water inlet of the micro-electrolysis packing cylinder, the water outlet of the micro-electrolysis packing cylinder is connected to the water inlet of the biological contact oxidation tank, and the water outlet of the biological contact oxidation tank is connected to the inlet of the activated carbon filter , the outlet of the activated carbon filter is connected to the backwater pool, and the micro-electrolysis packing cylinder is located above the water inlet, and is sequentially provided with a micro-electrolysis packing filter layer, a biological filler filter layer and a high-density fiber silk filter layer from bottom to top. the

It is further improved that: the filter layer of the micro-electrolysis filler includes a cylinder body arranged on the inner wall of the circumference of the micro-electrolysis filler tube, the micro-electrolysis filler is arranged in the cylinder body, and the upper part and the lower part of the cylinder body are respectively set There are filter plates, and water-through micropores are evenly distributed on each of the filter plates. the

A further improvement is: the micro-electrolytic filler is an iron-carbon micro-electrolytic filler. the

It is further improved that a trachea is laid on the lower part of the biological contact oxidation tank, and air outlets are uniformly distributed on the trachea, and one end of the trachea extends out of the tank to connect with a fan, and the air outlet of the trachea is located in the biological contact oxidation tank The upper part is provided with an activated sludge filler layer. the

A further improvement is: the stirring reaction tower includes a stirring tower and a stirring device arranged in the stirring tower, the stirring device includes a stirring shaft and stirring blades uniformly distributed on the outside of the stirring shaft circumference, and the lower part of each stirring blade is also There are toggle levers respectively. the

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

A further improvement is that: a water pump is provided between the magnetic separator and the micro-electrolysis packing cylinder to pump the sewage separated by the magnetic separator into the micro-electrolysis packing cylinder. the

By adopting the above-mentioned technical scheme, the beneficial effect of the utility model is: when the sewage 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 filtered and rolled After preliminary filtration by the sieve machine, it is pumped into the stirring reaction tower, and the agents that can complete the sedimentation of chromium, cyanide and heavy metals in the mud water are added in sequence. After treatment, open the valve of the stirring reaction tower, pump the sludge into the magnetic separator for mud-water separation treatment, and after the separation treatment, pump the supernatant in the magnetic separator into the micro-electrolysis packing cylinder for further treatment, thereby degrading the color-causing substances in the wastewater And suspended solids SS and COD, the sewage after further micro-electrolysis treatment by the micro-electrolytic packing cylinder is discharged into the biological contact oxidation tank to degrade the color-causing substances in the water and remove the suspended solids in the water. After being treated by the biological contact oxidation tank, the sewage is filtered by activated carbon After being further filtered by the filter, it is discharged up to the standard or enters the backwater pool for recycling. Its structural design is reasonable, the treatment process steps are simple, it can effectively degrade the color-causing substances in water, the removal rate of organic matter in water is high, and the sewage has good biodegradability. It can effectively treat papermaking sewage, minimize the pollution to the environment, and make it Meet the sewage discharge standard and improve the 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, this embodiment discloses a sewage zero-discharge advanced treatment system, including a sump 1, a filter roller sieve machine 2, a stirring reaction tower 3, a magnetic separator 4, a micro-electrolysis packing cylinder 5, a biological contact oxidation tank 6, Activated carbon filter 7 and backwater pool 8, the outlet of described sump 1 connects the inlet of filter roller sieve machine 2, and the outlet of described filter roller sieve machine 2 connects the inlet of stirring reaction tower 3, in the described stirring reaction tower Add agents that can completely precipitate chromium, cyanide and heavy metals in sewage, stir and react fully, then add magnetic powder and flocculant, and then stand for reaction. The inlet of the collection tank 1 is connected to the previous process, and its function is to collect, store and balance For the water quality and quantity of papermaking wastewater, the outlet of the stirring reaction tower 3 is connected to the inlet of the magnetic separator 4, and the magnetic separator 4 adopts magnetic separation, and the sludge and clean water can be completely separated in only 3 minutes. The magnetic separator 4 The drainage hole of the micro-electrolysis filler tube 5 is connected to the water inlet, and the water outlet of the micro-electrolysis filler tube 5 is connected to the water inlet of the biological contact oxidation tank 6, and the lower part of the biological contact oxidation tank 6 is provided with a trachea 61, and the Air outlet holes are evenly distributed on the trachea 61, and one end of the trachea 61 stretches out of the pool and is connected with the fan 62. The upper part of the air outlet of the trachea 61 in the biological contact oxidation tank 6 is provided with an activated sludge filler layer 63. The water outlet 64 of the biological contact oxidation tank 6 is connected to the inlet of the activated carbon filter 7, the outlet of the activated carbon filter 7 is connected to the backwater pool 8, and the micro-electrolysis filler cylinder 5 is located above the water inlet and arranged sequentially from bottom to top. There are micro-electrolysis filler filter layer 51, biological filler filter layer 52 and high-density fiber silk filter layer 53. The micro-electrolysis packing filter layer 51 includes a cylindrical body arranged on the inner wall of the micro-electrolysis packing tube 5, the iron-carbon micro-electrolysis packing is arranged in the cylindrical body, and the upper and lower parts of the cylindrical body are respectively provided with Filter plates, each of the filter plates is evenly distributed with water-through micropores. The new sewage zero-discharge advanced treatment system can use the micro-electrolytic material filled in the waste water to generate a 1.2V potential difference to electrolyze the waste water 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 biological filler filter layer can further improve the degradation ability and remove water Suspended solids, improve the removal rate of organic matter in sewage, and make COD in wastewater discharge up to the standard. The high-density fiber filter layer has many voids and a large specific surface area, and has the function of mechanical interception. It can purify water, intercept suspended solids and biological flocs in the water, and ensure the quality of the effluent.

The stirring reaction tower 3 comprises a stirring tower and a stirring device located in the stirring tower, the stirring device comprises a stirring shaft and stirring blades uniformly distributed on the outside of the stirring shaft circumference, and the bottom of each stirring blade is respectively provided with a dial moving rod. the

A pump for pumping muddy water in the stirred reaction tower to the magnetic separator is provided between the stirred reaction tower 3 and the magnetic separator 4, and a control valve is also provided at the bottom of the stirred reaction tower. the

A water pump is provided between the magnetic separator 4 and the micro-electrolysis packing tube 5 to drive the sewage separated by the magnetic separator into the micro-electrolysis packing tube. the

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. The zero-discharge advanced treatment system for sewage is characterized in that it includes a water collection tank, a filter roller sieve machine, a stirring reaction tower, a magnetic separator, a micro-electrolysis packing cylinder, a biological contact oxidation tank, an activated carbon filter and a return tank. The outlet of the pool is connected to the inlet of the filter roller sieve machine, the outlet of the filter roller sieve machine is connected to the inlet of the stirring reaction tower, the outlet of the stirring reaction tower is connected to the inlet of the magnetic separator, and the drain hole of the magnetic separator is connected to the micro electrolytic The water inlet of the packing cylinder is connected, the water outlet of the micro-electrolysis packing cylinder is connected to the water inlet of the biological contact oxidation tank, the water outlet of the biological contact oxidation tank is connected to the inlet of the activated carbon filter, and the outlet of the activated carbon filter is connected to the return The water pool is connected, and the micro-electrolysis filler cylinder is located above the water inlet, and the micro-electrolysis filler filter layer, the biological filler filter layer and the high-density fiber filament filter layer are arranged in sequence from bottom to top. 2. The sewage zero-discharge advanced treatment system according to claim 1, characterized in that: the micro-electrolytic filler filter layer includes a cylindrical cylinder arranged on the inner wall of the micro-electrolytic filler cylinder, and the cylindrical cylinder is provided with Micro-electrolytic packing, the upper and lower parts of the cylinder body are respectively provided with filter plates, and the filter plates are respectively uniformly distributed with water-through micropores. 3. The sewage zero-discharge advanced treatment system according to claim 2, characterized in that: the micro-electrolytic filler is iron-carbon micro-electrolytic filler. 4. The sewage zero-discharge advanced treatment system according to claim 1, characterized in that: a trachea is laid in the lower part of the biological contact oxidation tank, and air outlets are uniformly distributed on the trachea, and one end of the trachea extends out of the pool Connected with the fan, the biological contact oxidation tank is provided with an activated sludge filler layer on the upper part of the air outlet of the air pipe. 5. The sewage zero-discharge advanced treatment system according to claim 1, characterized in that: the stirring reaction tower includes a stirring tower and a stirring device arranged in the stirring tower, and the stirring device includes a stirring shaft and is uniformly distributed on the stirring tower. Stirring blades on the outer side of the shaft circumference, and the lower part of each stirring blade is respectively provided with a stirring rod. 6. The sewage zero-discharge advanced treatment system according to claim 1, characterized in that: a pump is provided between the stirring reaction tower and the magnetic separator to pump the muddy water in the stirring reaction tower to the magnetic separator, and the There is also a control valve at the bottom of the stirred reaction tower. 7. The sewage zero-discharge advanced treatment system according to claim 1, characterized in that: a water pump is provided between the magnetic separator and the micro-electrolysis packing tube to drive the sewage separated by the magnetic separator into the micro-electrolysis packing tube .

Images