CN107840542B - Sewage treatment method - Google Patents

Abstract

The invention relates to the technical field of sewage treatment, in particular to a treatment method of a sewage treatment system, which comprises a water inlet pipe, a grating machine, a sedimentation tank, an adjusting tank, an anaerobic tank, a first aerobic tank and a second aerobic tank, a first biological tank and a second biological tank, wherein the water inlet pipe is used for leading in sewage for treatment, the grating machine is used for intercepting and removing impurities in the sewage, the sedimentation tank is used for precipitating suspended matters in the sewage, the adjusting tank is used for adjusting the flow and the concentration of the sewage, the anaerobic tank is used for carrying out anaerobic treatment on the sewage, the first aerobic tank and the second aerobic tank are used for decomposing organic matters in the sewage into inorganic matters, the first biological tank; the sewage treatment system and the sewage treatment method can quickly treat the sewage, can be directly used in artificial wetlands or directly discharged to rivers, scenic spots, reservoirs and the like after treatment, and have high treatment efficiency and good treatment effect.

Description

A kind of sewage treatment method

technical field

The invention relates to the technical field of sewage treatment, in particular to a treatment method of a sewage treatment system.

Background technique

With the increase of urban population and the development of industrial and agricultural production, the amount of sewage generated in the production and living process is also increasing. In order to reduce the harm of sewage to water bodies and the environment, it needs to be purified before it is released into the environment. link. Most of the existing sewage treatment system treatment methods are composed of pretreatment system, biochemical treatment system and mud-water separation system, mainly due to the use of different process methods to construct its biochemical treatment system, which makes various types of sewage treatment system treatment methods in Its structure is different.

Commonly used are: conventional anaerobic/anoxic/aerobic process (A/A/O process).

Several main urban sewage treatment processes are as follows:

A/A/O and its improved process, SBR and its variant process and UNITANK process.

However, the existing sewage treatment system treatment methods all have the same defect, the sewage cannot be directly discharged or used directly after treatment, and the treatment efficiency is poor.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a sewage treatment system that can quickly treat sewage, and can be directly used in artificial wetlands or directly discharged to rivers, scenic spots, reservoirs and other places after treatment, with high treatment efficiency and good treatment effect. Approach.

The technical scheme adopted in the present invention is: a treatment method for a sewage treatment system, including a water inlet pipe for introducing sewage for treatment, a grid machine for intercepting and removing sundries in the sewage, and a grid machine for precipitating suspended solids in the sewage The sedimentation tank, the adjustment tank for adjusting the flow and concentration of sewage, the anaerobic tank for anaerobic treatment of sewage, the first aerobic tank and the second aerobic tank for decomposing organic matter in sewage into inorganic matter, A first biological pool and a second biological pool for purifying sewage, and a disinfection pool for sterilizing sewage;

Sewage is introduced from the inlet pipe to the grid machine, the grid machine is connected to the sedimentation tank, the sedimentation tank is connected to the adjustment tank, the adjustment tank is connected to the anaerobic tank, and the anaerobic tank is connected to the first best An oxygen pool and a second aerobic pool, the first aerobic pool is connected to the first biological pool and the second biological pool; the second aerobic pool is connected to the disinfection pool.

A further improvement to the above scheme is that the grid machine is provided with a water inlet, a water outlet, a grid bar and a sterilization component, the grid bar is arranged between the water inlet and the water outlet, and the sterilization component is arranged at the grid bar position. , the water inlet is connected to the water inlet pipe, and the water outlet is connected to the sedimentation tank.

A further improvement to the above solution is that the sterilization component is an ultrasonic sterilization component.

A further improvement to the above scheme is that the regulating tank includes a mixing tank and an auxiliary sedimentation tank, one end of the mixing tank is connected with the auxiliary sedimentation tank, the other end of the mixing tank is connected with the anaerobic tank, and the auxiliary sedimentation tank is connected with the sedimentation tank. The ponds are connected; the sedimentation aid pond is provided with an S-shaped water channel.

A further improvement to the above solution is that the anaerobic tank is provided with a partition plate to separate the anaerobic tank into three tank bodies, and the three tank bodies are provided with gaps at the partition plate to communicate with each other.

A further improvement of the above solution is that both the first biological pool and the second biological pool are provided with feeding components, and the feeding components input different auxiliary agents to the first biological pool and the second biological pool.

A further improvement to the above solution is that the first biological pool is connected with a purification pool, the second biological pool is connected with a constructed wetland, and the constructed wetland is provided with a water outlet that is connected to a water inlet pipe.

A treatment method for a treatment method for a sewage treatment system, characterized in that it comprises the following steps:

Step 1, the sewage is introduced into the grid machine through the water inlet pipe, and the large-sized sludge and sundries are separated from the sewage through the grid machine;

In step 2, the separated sewage is introduced into a sedimentation tank for sedimentation treatment of the suspended solids in the sewage;

Step 3, the sewage is introduced from the sedimentation tank into the adjustment tank, and the flow concentration of the sewage is adjusted through the adjustment tank;

Step 4, the adjustment tank introduces the sewage into the anaerobic tank to treat the sewage without oxygen;

Step 5, the sewage is introduced into the first aerobic tank and the second aerobic tank from the anaerobic tank to decompose the organic matter in the sewage into inorganic matter;

Step 6: After the treatment in the first aerobic tank, the sewage is introduced into the first biological tank and the second biological tank respectively, and the flocculant and the coagulant are put into the first biological tank, and the nutrient auxiliary and the solidifying agent are put into the second biological tank. , after the second aerobic tank treatment, the sewage is exported to the disinfection tank for disinfection treatment;

Step 7, the first biological pool discharges the water into the purification pool after treatment with flocculants and coagulants, puts the active biological composition in the purification pool, and finally discharges it to the river or landscape reservoir; the second biological pool is inputting nutrients. After the auxiliary agent and curing agent, the water is discharged to the constructed wetland for use; the photocatalytic disinfection of the sewage in the disinfection tank is finely filtered and discharged, and it can be discharged to the river or farmland for use;

A further improvement to the above scheme is that in the step 1, the water inlet pipe introduces the sewage from the water inlet into the grid machine, separates the larger particle size sludge and sundries from the sewage through the grid bars, and sterilizes by ultrasonic waves during the separation process. The component sterilizes the sewage;

In the step 3, in the adjustment tank, the remaining sundries are again sunk into the S-shaped water channel in the auxiliary settling tank for removal, and the non-polluted water quality is placed in the mixing tank to be mixed with the sewage;

In the step 4, in the anaerobic pond, the three ponds are processed in sequence, and the organic matter is hydrolyzed, acidified and methanated by the action of the anaerobic bacteria, and the organic matter in the wastewater is removed;

In the step 5, the different concentrations of the treated sewage in the anaerobic tank are detected and the first aerobic tank or the second aerobic tank is selected for use;

In the step 6, when the first aerobic pond is introduced, the first biological pond or the second biological pond is selected for use according to the plants of the constructed wetland; After photocatalytic disinfection, it is discharged up to the standard after fine filtration;

A further improvement to the above scheme is, in the step 6, the photocatalytic disinfection is to give the sewage through the photocatalytic purification reactor for disinfection treatment;

The nutrient adjuvant is a composite nutrient adjuvant, and its preparation method is as follows: dissolving chitosan in an acidic aqueous solution to prepare a solution containing chitosan to fully dissolve the chitosan; adding ceric ammonium nitrate or ammonium persulfate an initiator, and then acrylamide is added to prepare a chitosan-grafted polyacrylamide material, isopropanol is added, and an aqueous NaOH solution is added to prepare a composite nutrient adjuvant;

The curing agent is composed of tricalcium silicate, dicalcium silicate and tricalcium aluminate;

The active biological combination formula is: Pediococcus lactis, Pediococcus pentosaceus, Leuconostoc membranae, Bacillus subtilis, Lactobacillus acidophilus, Pichia powdery;

The concentration of the Pediococcus pentosaceus is 6.0×10 cfu/gm-7.0× 10 cfu/gm;

The concentration of the Leuconostoc membranae is 5.0×101cfu/gm-6.0×101cfu/gm;

The concentration of the Bacillus subtilis is 4.0×10 cfu/gm-5.0×10 cfu/gm;

The concentration of the Lactobacillus acidophilus is 2.0×101cfu/gm-3.0×101cfu/gm;

The concentration of the powdered Pichia pastoris is 5.0×100cfu/gm-7.0×100cfu/gm;

The curing agent is composed of tricalcium silicate, dicalcium silicate and tricalcium aluminate in a ratio of 2:3:3.

The beneficial effects of the present invention are:

1. A treatment method for a sewage treatment system, which is provided with an inlet pipe for introducing sewage for treatment, a grid machine for intercepting and removing debris in sewage, a sedimentation tank for precipitating suspended solids in sewage, and for adjusting The adjustment tank for sewage flow and concentration, the anaerobic tank for anaerobic treatment of sewage, the first aerobic tank and the second aerobic tank for decomposing organic matter in sewage into inorganic matter, the first aerobic tank for purifying sewage A biological pool and a second biological pool are used for disinfection of sewage;

Sewage is introduced from the inlet pipe to the grid machine, the grid machine is connected to the sedimentation tank, the sedimentation tank is connected to the adjustment tank, the adjustment tank is connected to the anaerobic tank, and the anaerobic tank is connected to the first best An oxygen pool and a second aerobic pool, the first aerobic pool is connected to the first biological pool and the second biological pool; the second aerobic pool is connected to the disinfection pool.

On the one hand, the sewage is directly pumped into the grid machine to separate the sewage from the large-sized sludge, which saves the removal time of the large-sized sludge and improves the efficiency. In the third aspect, the concentration and flow of sewage can be directly adjusted through the adjustment tank, and the concentration and flow of sewage can be adjusted directly through the mixing tank and sedimentation aid. The pond plays a certain role in cooperation to improve the subsequent treatment effect of sewage and improve the treatment efficiency; fourthly, through the use of anaerobic bacteria in the anaerobic pond, the organic matter is hydrolyzed, acidified and methanated, and the organic matter in the sewage is removed. , improve the biodegradability of sewage; fifthly, through the first aerobic tank and the second aerobic tank, the excess organic matter in the sewage can be decomposed into inorganic matter, which is convenient for the subsequent treatment of sewage; sixth aspect, the first After treatment in an aerobic tank, the sewage is purified by adding additives into the first biological tank and the second biological tank, and then selectively discharged; in the seventh aspect, after the treatment in the second aerobic tank, the sewage is transferred to disinfection After photocatalytic disinfection through the disinfection tank, it is discharged up to the standard after fine filtration;

In the present invention, the sewage treatment system can quickly treat the sewage, and after treatment, it can be directly used in artificial wetlands or directly discharged to rivers, scenic spots, reservoirs, etc., with high treatment efficiency and good treatment effect.

2. The grid machine is provided with a water inlet, a water outlet, a grid bar and a sterilization component. The grid bar is arranged between the water inlet and the water outlet. The sterilization component is arranged at the grid bar position. The water inlet pipe is connected, and the water outlet is connected to the sedimentation tank, and the large particle size sludge or sundries and sewage are separated and treated by grating bars. preparation for processing.

3. The sterilization component is an ultrasonic sterilization component, and the sterilization effect of the ultrasonic wave is mainly caused by the cavitation it produces. During ultrasonic treatment, when high-intensity ultrasonic waves propagate in a liquid medium, longitudinal waves are generated, resulting in areas of alternate compression and expansion. These areas of pressure change are prone to cavitation and form tiny bubble nuclei in the medium. At the moment of adiabatic shrinkage and collapse, the micro-bubble nuclei kill some bacteria in the liquid, inactivate viruses, and even destroy the cell walls of some smaller microorganisms, which is convenient for subsequent preparations for sewage treatment.

4. The regulating tank includes a mixing tank and an auxiliary sedimentation tank, one end of the mixing tank is connected with the auxiliary sedimentation tank, the other end of the mixing tank is connected with the anaerobic tank, and the auxiliary sedimentation tank is connected with the sedimentation tank; The sedimentation tank is equipped with an S-shaped water channel, and the finer impurities in the sewage are precipitated again through the auxiliary sedimentation tank, and then precipitated into the S-shaped water channel for discharge, and then the sewage is mixed with the water in the mixing tank. Purification treatment.

5. The anaerobic pond is provided with a separator to separate the anaerobic pond into three ponds, and the three ponds are connected with a gap at the position of the separator, which can make the sewage pass longer in the anaerobic pond. The treatment time for sewage without oxygen is longer, and the effect of anaerobic bacteria can be better utilized to hydrolyze, acidify and methanize organic matter, remove organic matter in sewage, and improve the biodegradability of sewage.

6. The first biological pond and the second biological pond are equipped with feeding components, and the feeding components put different auxiliary agents into the first biological pond and the second biological pond, according to the sewage concentration in the biological pond and the later use. The use of different additives can improve the purification treatment of sewage, and the treatment efficiency is high.

7. The first biological pool is connected with a purification pool, through which the sewage can be completely purified and discharged to the farmland for use, and the purification effect is good. The second biological pool is connected with a constructed wetland, and the constructed wetland is provided with a water outlet Connected to the water inlet pipe, it is convenient to circulate back to the water outlet for re-purification treatment after the constructed wetland is used, so that it can be recycled without waste.

8. A treatment method for a sewage treatment system, comprising the following steps:

Step 1: The sewage is introduced into the grid machine through the water inlet pipe, and the large-sized sludge and sundries are separated from the sewage through the grid machine; The large sludge and sundries are separated from the sewage, and the sewage is sterilized by the ultrasonic sterilization component during the separation process, and the sterilization effect is good, which is convenient for the subsequent purification of the sewage;

In step 2, the separated sewage is introduced into a sedimentation tank for sedimentation treatment of suspended solids in the sewage, which can effectively facilitate subsequent sewage treatment and improve purification treatment efficiency;

Step 3, the sewage is introduced from the sedimentation tank into the adjustment tank, the flow concentration of the sewage is adjusted through the adjustment tank, the remaining debris is sunk into the S-shaped water channel again in the adjustment tank through the auxiliary sedimentation tank, and the pollution-free water quality is placed in the mixing tank. Mixed with sewage, the pollution-free water quality is reserved for a part in the mixing tank after treatment in the early stage, so that it can be mixed with sewage in the post-treatment. After mixing, the degree of pollution in the sewage can be reduced, which can facilitate the treatment of sewage in a wider range. , high processing efficiency;

Step 4: The regulating tank introduces the sewage into the anaerobic tank to treat the sewage without oxygen. In the anaerobic tank, the three tanks are processed in turn, and the organic matter is hydrolyzed, acidified and methane is generated by the action of anaerobic bacteria. It can remove certain organic substances in wastewater, which is convenient for later purification treatment and can improve the biodegradability of sewage;

Step 5: Introduce the sewage from the anaerobic tank into the first aerobic tank and the second aerobic tank to decompose the organic matter in the sewage into inorganic matter, and detect the difference in the concentration of the treated sewage in the anaerobic tank and choose whether to introduce it into the first aerobic tank or the second aerobic tank. The use of aerobic pools can be used in different discharges in the later stage according to different concentrations, with more selectivity and wider applicability;

Step 6: After the treatment in the first aerobic tank, the sewage is introduced into the first biological tank and the second biological tank respectively, and the flocculant and the coagulant are put into the first biological tank, and the nutrient auxiliary and the solidifying agent are put into the second biological tank. , after the treatment in the second aerobic tank, the sewage is exported to the disinfection tank for disinfection. When it is introduced into the first aerobic tank, the first biological tank or the second biological tank is selected for use according to the plants of the constructed wetland; when imported into the second aerobic tank Secondary denitrification through nitrification, photocatalytic disinfection in a disinfection tank, and fine filtration before discharge up to the standard. Photocatalytic disinfection is to sterilize sewage through a photocatalytic purification reactor, which can be directly purified and treated before discharge, with high treatment efficiency. And it can be disinfected, with good treatment effect and good purification effect;

Step 7, the first biological pool discharges the water into the purification pool after treatment with flocculants and coagulants, puts the active biological composition in the purification pool, and finally discharges it to the river or landscape reservoir; the second biological pool is inputting nutrients. After the auxiliary agent and curing agent, the water is discharged to the constructed wetland for use; the photocatalytic disinfection of the sewage in the disinfection tank is finely filtered and discharged, which can be discharged to the river or farmland for use, and can be directly discharged for use. The sewage treatment effect is good;

The nutrient adjuvant is a composite nutrient adjuvant, and its preparation method is as follows: dissolving chitosan in an acidic aqueous solution, preparing a solution containing chitosan, so as to fully dissolve the chitosan; adding ceric ammonium nitrate or ammonium persulfate initiator , then add acrylamide to prepare chitosan grafted polyacrylamide material, add isopropyl alcohol, and then add NaOH aqueous solution to prepare composite nutrient adjuvant; It will not cause secondary pollution to the water body, the price is relatively low, it has a high nutrient absorption for plants, and improves the growth of plants;

The active biological combination formula is: Pediococcus pentosaceus, Leuconostoc membranaceus, Bacillus subtilis, Lactobacillus acidophilus, Pichia powdery; the active biological combination can oxidize or decompose various organic compounds and organic pollutants in sewage , to optimize the environment, protect human health, and save water resources. All kinds of bacteria use organic substances in pollutants as food. When the sewage is purified, these bacteria will gradually decrease as the pollutants are reduced. When the pollutants are completely When removing, the bacteria will die due to lack of food supply. Therefore, the present invention can completely remove various pollutants, and the treatment effect is good.

Description of drawings

FIG. 1 is a schematic diagram of the implementation of the present invention.

Description of the accompanying drawings: sewage treatment system treatment method 10, water inlet pipe 100, grille machine 200, water inlet 210, water outlet 220, grid bars 230, sterilization components 240, sedimentation tank 300, adjustment tank 400, mixing tank 410, auxiliary Sedimentation tank 420, S-shaped water channel 430, anaerobic tank 500, first aerobic tank 600, first biological tank 610, purification tank 611, second biological tank 620, constructed wetland 621, second aerobic tank 700, disinfection tank 710.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

As shown in FIG. 1 , it is a schematic diagram of the implementation of the present invention.

A treatment method 10 for a sewage treatment system is provided with a water inlet pipe 100 for introducing sewage for treatment, a grid machine 200 for intercepting and removing debris in the sewage, a sedimentation tank 300 for precipitating suspended solids in the sewage, using The adjustment tank 400 for adjusting the flow and concentration of sewage, the anaerobic tank 500 for anaerobic treatment of sewage, the first aerobic tank 600 and the second aerobic tank 700 for decomposing organic matter in the sewage into inorganic matter, are The first biological pool 610 and the second biological pool 620 for purifying sewage, and the disinfection pool 710 for sterilizing sewage;

Sewage is introduced from the inlet pipe 100 to the grid machine 200, the grid machine 200 is connected to the sedimentation tank 300, the sedimentation tank 300 is connected to the adjustment tank 400, and the adjustment tank 400 is connected to the anaerobic tank 500, so The anaerobic tank 500 is connected to the first aerobic tank 600 and the second aerobic tank 700, and the first aerobic tank 600 is connected to the first biological tank 610 and the second biological tank 620; the second aerobic tank 700 Connected to the disinfection tank 710 .

On the one hand, the sewage is directly pumped into the grid machine 200 to separate the sewage from the large-sized sludge, which saves the time for removing the large-sized sludge and improves the efficiency. Some suspended solids (such as: garbage, leaves, etc.) are directly precipitated to the bottom for discharge, which saves the cleaning time of suspended solids; thirdly, the concentration and flow of sewage can be directly adjusted through the regulating tank 400, and the mixing tank It plays a certain role in cooperation with the sedimentation aid tank to improve the subsequent treatment effect of sewage and improve the treatment efficiency; fourthly, through the use of anaerobic bacteria in the anaerobic tank 500, the organic matter is hydrolyzed, acidified and methanated to remove The organic matter in the sewage improves the biodegradability of the sewage; in the fifth aspect, the excess organic matter in the sewage can be decomposed into inorganic matter by the first aerobic tank 600 and the second aerobic tank 700, which is convenient for the subsequent treatment of the sewage In the sixth aspect, after the treatment of the first aerobic tank 600, the sewage is purified by the first biological tank 610 and the second biological tank 620 by inputting auxiliary agents, and then selectively discharged; in the seventh aspect, the second aerobic tank After the treatment in the tank 700, the sewage is transferred to the disinfection tank 710, and then is subjected to photocatalytic disinfection through the disinfection tank 710, and then discharged up to the standard after being finely filtered;

The grill machine 200 is provided with a water inlet 210 , a water outlet 220 , a grid bar 230 and a sterilization component 240 , the grid bar 230 is arranged between the water inlet 210 and the water outlet 220 , and the sterilization component 240 is arranged at the position of the grid bar 230 , the water inlet 210 is connected to the water inlet pipe 100, the water outlet 220 is connected to the sedimentation tank 300, and the large-sized sludge or sundries and sewage are separated and treated by the grid bars 230. The assembly 240 performs sterilization treatment on the sewage, so as to facilitate preparation for the subsequent treatment of the sewage.

The sterilization component 240 is an ultrasonic sterilization component 240 , and the sterilization effect of the ultrasonic wave is mainly caused by the cavitation produced by the ultrasonic wave. During ultrasonic treatment, when high-intensity ultrasonic waves propagate in a liquid medium, longitudinal waves are generated, resulting in areas of alternate compression and expansion. These areas of pressure change are prone to cavitation and form tiny bubble nuclei in the medium. At the moment of adiabatic shrinkage and collapse, the micro-bubble nuclei kill some bacteria in the liquid, inactivate viruses, and even destroy the cell walls of some smaller microorganisms, which is convenient for subsequent preparations for sewage treatment.

The regulating tank 400 includes a mixing tank 410 and an auxiliary sedimentation tank 420. One end of the mixing tank 410 is connected to the auxiliary sedimentation tank 420, the other end of the mixing tank 410 is connected to the anaerobic tank 500, and the auxiliary sedimentation tank 420 is connected to the sedimentation tank 300. The auxiliary settling tank 420 is provided with an S-shaped water channel 430, and through the auxiliary settling tank 420, the relatively fine impurities and other substances in the sewage are precipitated again, and then precipitated into the S-shaped water channel 430 for discharge, and then the sewage and the water in the mixing tank 410 are mixed. After mixing, the subsequent purification treatment of sewage can be facilitated.

The anaerobic tank 500 is provided with a partition to separate the anaerobic tank 500 into three tank bodies, and the three tank bodies are connected with gaps at the partition positions, which can make the sewage pass through the anaerobic tank 500 for a longer time, and the Sewage without oxygen takes longer to treat, and can better utilize the action of anaerobic bacteria to hydrolyze, acidify and methanize organic matter, remove organic matter in sewage, and improve the biodegradability of sewage.

The first biological pool 610 and the second biological pool 620 are both provided with feeding components, and the feeding components input different additives into the first biological pool 610 and the second biological pool 620, according to the sewage concentration in the biological pool and later use. The use of different additives can improve the purification treatment of sewage, and the treatment efficiency is high.

The first biological pool 610 is connected with a purification pool 611, through which the sewage can be completely purified and discharged to farmland for use, and the purification effect is good. The second biological pool 620 is connected with a constructed wetland 621, and the constructed wetland 621 has The water outlet 220 is connected to the water inlet pipe 100, which can facilitate recycling back to the water outlet 220 for re-purification treatment after the constructed wetland 621 is used.

A treatment method for a sewage treatment system, comprising the following steps:

Step 1, the sewage is introduced into the grid machine 200 through the water inlet pipe 100, and the large-sized sludge and sundries are separated from the sewage through the grid machine 200; The grating 230 separates the larger particle size sludge and sundries from the sewage, and the ultrasonic sterilization component 240 is used to sterilize the sewage during the separation process, and the sterilization effect is good, which is convenient for the subsequent purification of the sewage;

In step 2, the separated sewage is introduced into the sedimentation tank 300 for sedimentation treatment of suspended solids in the sewage, which can effectively facilitate subsequent sewage treatment and improve purification treatment efficiency;

Step 3, the sewage is introduced from the sedimentation tank 300 into the adjustment tank 400, the flow concentration of the sewage is adjusted by the adjustment tank 400, and the remaining sundries are again sunk into the S-shaped water channel 430 in the adjustment tank 400 through the auxiliary sedimentation tank 420 to be removed, and the mixture is mixed. The unpolluted water is placed in the pool 410 to be mixed with the sewage. The unpolluted water is reserved for a part in the mixing tank 410 after the treatment in the early stage, so that it can be mixed with the sewage in the post-treatment. After mixing, the degree of pollution in the sewage can be reduced, which is convenient for Larger range of sewage treatment, high treatment efficiency;

In step 4, the regulating tank 400 introduces the sewage into the anaerobic tank 500 to process the sewage without oxygen. In the anaerobic tank 500, three tanks are processed in turn, and the action of anaerobic bacteria is used to make the organic matter hydrolyzed, Acidification and methanation can remove organic matter in wastewater, which can remove certain organic matter in wastewater, which is convenient for later purification treatment and can improve the biodegradability of wastewater;

Step 5, the sewage is introduced from the anaerobic tank 500 into the first aerobic tank 600 and the second aerobic tank 700 to decompose the organic matter in the sewage into inorganic substances, and the treated sewage in the anaerobic tank 500 is detected and introduced into the first aerobic tank 500 according to different concentrations. The aerobic tank 600 or the second aerobic tank 700 can be used. According to the different concentrations, different discharges can be selected for later use, with more selectivity and wider applicability;

Step 6: After the first aerobic tank 600 is treated, the sewage is introduced into the first biological tank 610 and the second biological tank 620 respectively, the flocculant and the coagulation aid are put in the first biological tank 610, and the nutrients are put in the second biological tank 620. Auxiliaries and curing agents, after the treatment of the second aerobic tank 700, the sewage is exported to the disinfection tank 710 for disinfection treatment, and when it is introduced into the first aerobic tank 600, the first biological tank 610 or the second biological agent is selected according to the species of the constructed wetland 621. The tank 620 is used; when it is introduced into the second aerobic tank 700, it is denitrified by nitrification for a second time, and then it is subjected to photocatalytic disinfection in the disinfection tank 710, and then it is discharged up to the standard after fine filtration. It can be directly purified and discharged after treatment, with high treatment efficiency, and it can be disinfected, with good treatment effect and good purification effect;

Step 7, the first biological pond 610 discharges the water to the purification pond 611 after treatment with flocculants and coagulation aids, puts the active biological composition in the purification pond 611, and finally discharges it to the river or landscape reservoir; the second biological pond 620 After putting in nutrient additives and curing agents, the water is discharged to the constructed wetland 621 for use; in the disinfection tank 710, the photocatalytic disinfection of the sewage is carried out and discharged through fine filtration. , the purification efficiency is high, and the sewage treatment effect is good;

The nutrient adjuvant is a composite nutrient adjuvant, and its preparation method is as follows: dissolving chitosan in an acidic aqueous solution, preparing a solution containing chitosan, so as to fully dissolve the chitosan; adding ceric ammonium nitrate or ammonium persulfate initiator , then add acrylamide to prepare chitosan grafted polyacrylamide material, add isopropyl alcohol, and then add NaOH aqueous solution to prepare composite nutrient adjuvant; It will not cause secondary pollution to the water body, the price is relatively low, it has a high nutrient absorption for plants, and improves the growth of plants;

The active biological combination formula is: Pediococcus pentosaceus, Leuconostoc membranae, Bacillus subtilis, Lactobacillus acidophilus, Pichia powdery;

The concentration of described Pediococcus lactis is 4.0×10 cfu/gm-5.0×10 cfu/gm;

The concentration of the Pediococcus pentosaceus is 6.0×10 cfu/gm-7.0× 10 cfu/gm;

The concentration of the Leuconostoc membranae is 5.0×101cfu/gm-6.0×101cfu/gm;

The concentration of the Bacillus subtilis is 4.0×10 cfu/gm-5.0×10 cfu/gm;

The concentration of the Lactobacillus acidophilus is 2.0×101cfu/gm-3.0×101cfu/gm;

The concentration of the powdered Pichia pastoris is 5.0×100cfu/gm-7.0×100cfu/gm;

The active biological combination can oxidize or decompose various organic compounds and organic pollutants in sewage, which can optimize the environment, protect human health, and save water resources. Various bacteria use organic substances in pollutants as food, and when sewage is purified Then, these bacteria will gradually decrease with the reduction of pollutants. When the pollutants are completely removed, the bacteria will die due to lack of food supply. Therefore, the present invention can completely remove various pollutants and has a good treatment effect.

The curing agent is composed of tricalcium silicate, dicalcium silicate and tricalcium aluminate in a ratio of 2:3:3.

In the present invention, the sewage treatment system and treatment method can quickly treat sewage, and after treatment, it can be directly used in artificial wetlands or directly discharged to rivers, scenic spots, reservoirs, etc., with high treatment efficiency and good treatment effect.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims (6)

1. A sewage treatment method is characterized in that: the adopted sewage treatment system comprises a water inlet pipe for leading in sewage to be treated, a grating machine for intercepting and removing impurities in the sewage, a sedimentation tank for precipitating suspended matters in the sewage, an adjusting tank for adjusting the flow and the concentration of the sewage, an anaerobic tank for carrying out anaerobic treatment on the sewage, a first aerobic tank and a second aerobic tank for decomposing organic matters in the sewage into inorganic matters, a first biological tank and a second biological tank for purifying the sewage, and a disinfection tank for disinfecting the sewage;

the sewage is led into a grating machine from the water inlet pipe, the grating machine is communicated to a sedimentation tank, the sedimentation tank is communicated to an adjusting tank, the adjusting tank is communicated to an anaerobic tank, the anaerobic tank is communicated with a first aerobic tank and a second aerobic tank, and the first aerobic tank is communicated to a first biological tank and a second biological tank; the second aerobic tank is communicated to the disinfection tank;

the adjusting tank comprises a mixing tank and an sedimentation assisting tank, one end of the mixing tank is connected with the sedimentation assisting tank, the other end of the mixing tank is connected with the anaerobic tank, and the sedimentation assisting tank is connected with the sedimentation tank; the sedimentation assisting tank is provided with an S-shaped water channel;

the first biological pool and the second biological pool are both provided with feeding components, and different auxiliary agents are fed into the first biological pool and the second biological pool by the feeding components;

the first biological tank is communicated with a purification tank, the second biological tank is communicated with an artificial wetland, and the artificial wetland is provided with a water outlet communicated with a water inlet pipe;

the treatment method comprises the following steps:

step 1, introducing sewage into a grating machine through a water inlet pipe, and separating sludge and impurities with large particle sizes from the sewage through the grating machine;

step 2, guiding the separated sewage into a sedimentation tank to carry out sedimentation treatment on suspended matters in the sewage;

step 3, leading the sewage from the sedimentation tank into an adjusting tank, and adjusting the flow concentration of the sewage through the adjusting tank;

step 4, the adjusting tank guides the sewage into an anaerobic tank to treat the sewage without oxygen;

step 5, leading the sewage from the anaerobic tank into a first aerobic tank and a second aerobic tank to decompose organic matters in the sewage into inorganic matters;

step 6, after the treatment in the first aerobic tank, the sewage is respectively led into a first biological tank and a second biological tank, a flocculating agent and a coagulant aid are put into the first biological tank, a nutrient auxiliary agent and a curing agent are put into the second biological tank, and after the treatment in the second aerobic tank, the sewage is led out to a disinfection tank for disinfection treatment;

step 7, discharging the water to a purification tank for use after the flocculant and the coagulant aid are added into the first biological tank for treatment, adding the active biological composition agent into the purification tank, and finally discharging the water to a river or a landscape reservoir; the second biological tank discharges water to the artificial wetland for use after nutrient auxiliary agents and curing agents are added; carrying out photocatalytic disinfection on the sewage in the disinfection tank, and discharging the sewage after fine filtration, wherein the sewage can be discharged to a river or a farmland for use;

the nutrient additive is a composite nutrient additive, and the preparation method comprises the following steps: dissolving chitosan in an acidic aqueous solution to prepare a chitosan-containing solution, so that the chitosan is fully dissolved; adding a ceric ammonium nitrate or ammonium persulfate initiator, adding acrylamide to prepare a chitosan grafted polyacrylamide material, adding isopropanol, and adding a NaOH aqueous solution to prepare a composite nutrient auxiliary agent;

the formula of the active biological composition agent is as follows: pediococcus pentosaceus, leuconostoc mesenteroides, bacillus subtilis, lactobacillus acidophilus and powdery pichia pastoris;

the concentration of the pediococcus pentosaceus is 6.0x103cfu/gm-7.0x 103 cfu/gm;

the concentration of the leuconostoc mesenteroides is 5.0x101 cfu/gm-6.0 x101 cfu/gm;

the concentration of the bacillus subtilis is 4.0x102cfu/gm-5.0x 102 cfu/gm;

the concentration of the lactobacillus acidophilus is 2.0x101cfu/gm-3.0x 101 cfu/gm;

the concentration of the powdery pichia pastoris is 5.0x100cfu/gm to 7.0x 100 cfu/gm;

the curing agent consists of tricalcium silicate, dicalcium silicate and tricalcium aluminate, and the proportion is 2:3: 3.

2. The method of sewage treatment according to claim 1, wherein: the grating machine is provided with a water inlet, a water outlet, grating strips and a sterilization assembly, the grating strips are arranged between the water inlet and the water outlet, the sterilization assembly is arranged at the positions of the grating strips, the water inlet is connected with a water inlet pipe, and the water outlet is communicated to a sedimentation tank.

3. A method of wastewater treatment according to claim 2, characterized in that: the sterilization component is an ultrasonic sterilization component.

4. The method of sewage treatment according to claim 1, wherein: the anaerobic tank is provided with a partition plate to divide the anaerobic tank into three tank bodies, and the three tank bodies are communicated through gaps arranged at the partition plate.

5. The method of claim 4, wherein: in the step 1, sewage is guided into a grating machine from a water inlet by a water inlet pipe, sludge and impurities with larger particle sizes are separated from the sewage by grating bars, and the sewage is sterilized by an ultrasonic sterilizing component in the separation process;

in the step 3, the residual impurities are sunk into the S-shaped water channel again in the adjusting tank through the settling basin for discharge, and the pollution-free water is placed in the mixing tank to be mixed with the sewage;

in the step 4, the three tank bodies are sequentially treated in the anaerobic tank, and organic matters are hydrolyzed, acidified and methanated under the action of anaerobic bacteria to remove the organic matters in the wastewater;

in the step 5, the sewage treated in the anaerobic tank is detected, and the sewage is guided into the first aerobic tank or the second aerobic tank for use according to different sewage concentrations;

in the step 6, when the artificial wetland is introduced into the first aerobic tank, the artificial wetland is selectively introduced into the first biological tank or the second biological tank for use according to the plants of the artificial wetland; when the sewage is led into the second aerobic tank, the sewage is denitrified for the second time through nitration, and then the sewage is subjected to photocatalytic disinfection through the disinfection tank and then is discharged after reaching the standard through fine filtration.

6. The method of claim 5, wherein: in the step 6, the photocatalytic disinfection is to disinfect the sewage through a photocatalytic purification reactor.

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