CN211497202U

CN211497202U - Sewage treatment plant containing arsenic, phosphorus and atrazine wastewater

Info

Publication number: CN211497202U
Application number: CN201922210429.4U
Authority: CN
Inventors: 陈海儿; 赵得宝; 刘红娟; 韦国玲; 林宇; 尹锦艳
Original assignee: Hualan Design Group Co ltd
Current assignee: Hualan Design Group Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-09-15
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses contain sewage treatment plant of arsenic, phosphorus and atrazine waste water, sewage pass through the sewage pump, carry the filter through sewage pipe, and liquid medicine pours into the sewage pipe before the medicine adding jar gets into the filter through adding the medicine pump and pipeline through adding the medicine jar, and sewage outwards discharges through the downcomer after the filtration of filter. The utility model discloses can the simultaneous processing contain the waste water of arsenic, phosphorus and atrazine, filtration efficiency is high, and equipment is compact, and a filter element section of thick bamboo can be dismantled, makes things convenient for trading of filter element and installation. The device solves the problems that the existing small sewage treatment device can not treat the waste water containing arsenic, phosphorus and atrazine and the treatment device in the prior art is not beneficial to replacing the filter element because of integrated forming.

Description

Sewage treatment plant containing arsenic, phosphorus and atrazine wastewater

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a sewage treatment device for wastewater containing arsenic, phosphorus and atrazine.

Background

Arsenic belongs to heavy metals, herbicides and pesticides in mining metallurgy, chemical production and agriculture, and feed additives for promoting growth, resisting coccidiosis and the like in breeding industry, and can bring high-concentration arsenic into the environment. Arsenic in the water body enters the body of the plant under the absorption action of the plant root system, enters the animal body through the food chain, and finally is enriched at the end of the food chain and enters the human body. When arsenic is accumulated to a certain degree in a human body, the skin and the digestive system of the human body can be cancerated, the cardiovascular system can be diseased, the liver and kidney functions can be damaged, and the death of the human body can be caused seriously.

Phosphorus is a common chemical raw material, and is used for producing food, feed, fertilizer, various industrial products and the like, but excessive phosphorus also brings adverse effects to the environment, and the excessive phosphorus enters water to cause water pollution and the water is rich in oxidation, so that the biological diversity of the water is disordered.

Atrazine is commonly called atrazine, and has a molecular formula: C8H14ClN5 belongs to triazine herbicides, and enters water after being applied, so that water pollution is caused, and enrichment is generated in a human body through the water, so that toxic damage to the human body is caused to different degrees. Atrazine may promote the development of female uterus, destroy the function of ovary, increase the incidence of uterine tumor, and cause early stage ovarian cancer and breast cancer after long-term contact with atrazine. Researches show that atrazine can promote the enzyme activity of certain enzyme in human body, thereby disturbing the endocrine balance of human body.

Generally, in order to test the water quality of a polluted area of a water body, a plurality of water body samples are collected in the polluted area, chemical substances are tested in a laboratory, and the tested water body samples need to be purified and then can be discharged to a sewer pipe to be discharged so as to avoid entering a city water circulation system to cause the pollution of the city water body. The contents of the three pollutants in the collected water body sample are very high, and under the normal condition, arsenic, phosphorus and atrazine belong to heavy metal pollutants, inorganic pollutants and organic pollutants respectively, and the three pollutants need to be treated separately. For example, lime, ferrous sulfate and liquid chlorine are put into the sewage to react with arsenic to generate precipitate, and then the precipitate is filtered and removed; removing the phosphorus-containing sewage by using a chemical precipitation method, a biological method, an ion exchange method, an adsorption method, a membrane separation method and other methods; for the atrazine sewage, the atrazine sewage can be treated by methods such as biodegradation, chemical adsorption and the like. The multi-stage treatment efficiency is low, and the working efficiency is influenced.

Disclosure of Invention

The utility model provides a sewage treatment plant who contains arsenic, phosphorus and atrazine waste water can the simultaneous processing contain the waste water of arsenic, phosphorus and atrazine, and filtration efficiency is high, and equipment is compact, and a filter element section of thick bamboo can be dismantled, makes things convenient for trading of filter element and installs. The device solves the problems that the existing small sewage treatment device can not treat the waste water containing arsenic, phosphorus and atrazine and the treatment device in the prior art is not beneficial to replacing the filter element because of integrated forming.

In order to realize the above the utility model discloses the purpose, the technical scheme who adopts is:

the sewage treatment device comprises a sewage pump, a sewage pipeline, a filter, a dosing tank, a dosing pump, a pipeline and a sewage pipeline, wherein the sewage is conveyed to the filter through the sewage pipeline, hydrogen peroxide is injected into the sewage pipeline in front of the filter through the dosing pump and the pipeline through the dosing tank, and the sewage is filtered by the filter and then is discharged outwards through a sewer pipe.

The filtering process comprises the following steps: sewage is conveyed to the filter from the sewage pump through the sewage pipeline, before the sewage enters the filter, a degradation agent in the dosing tank is injected into the sewage pipe through the dosing pump, and the degradation agent is mixed with the sewage and then enters the filter for filtering; in the filter, the pollutants are reacted to form flocculent precipitate, the flocculent precipitate is filtered by the filter element, and the harmful substances of arsenic, phosphorus and atrazine can be eliminated by the sewage from the filter, so that the high-efficiency purification is realized, and the effect of purifying the sewage can be realized by only once purifying

When one filter element needs to be replaced, the filter element can be independently detached for replacement, and other filter elements can continue to work; when one filter element is abnormally blocked, other filter elements can also bear the throughput.

A switching valve A is arranged on a pipeline header pipe between the sewage pump and the filters, and a switching valve B is arranged on branch pipes flowing into each filter; when one of the filters needs to be replaced, the corresponding switch valve B is closed, and sewage cannot flow into the replaced filter pipeline and pass through other filters; the switch valve A can also adjust the water flow of the sewage, so that the sewage flow is adaptive to the proportion of the degrading agent.

And a dosing valve is arranged on a dosing branch pipeline behind the dosing pump, when one of the filters needs to be replaced, the switching valve B is closed, and meanwhile, the dosing valve of the corresponding pipeline is also closed, so that any sewage or reactant is stopped being supplied to the filter.

The filter is cylindric, and both ends are the head, and middle main part section is from outer to interior in proper order: the filter comprises a filter shell, an ultraviolet lamp ring, a glass tube and a filter element; the end sockets at two ends are in threaded connection with the filter shell, parts and the filter element in the filter are convenient to replace, the ultraviolet lamp ring can emit ultraviolet rays, the atrazine passes through the transparent quartz glass tube, the atrazine is fully degraded and reacted under the irradiation of the ultraviolet rays and the oxidation environment of externally added hydrogen peroxide when passing through the filter element, the ferroferric oxide layer and the ferric oxide layer in the filter element are used as catalysts, and a large amount of atrazine is finally decomposed into water and carbon dioxide.

The filter core is used for a plurality of superpositions, and the filter core includes quartz sand layer, smokeless coal seam, magnetite layer, ferric oxide layer, no smoke coal seam, quartz sand layer from the entry to the export. The quartz sand layer and the smokeless coal layer close to the inlet are used for filtering large and small impurity particles originally existing in the sewage; the smokeless coal layer and the quartz sand layer close to the outlet are used for filtering flocculated substances formed in the ferric oxide layer and the ferric oxide layer through reaction. The anthracite filter element is made by wrapping anthracite by a PVC porous shell; the quartz sand filter element is made by wrapping quartz sand particles in a PVC porous shell; the ferroferric oxide filter element is made by filling ferroferric oxide powder in a porous quartz glass shell; the ferric oxide filter element is made by filling ferric oxide powder in a porous quartz glass shell.

The filter shell is provided with an observation hole which is used for observing whether the ultraviolet lamp ring in the filter works normally or not.

The sealing head is provided with the heat dissipation ribs, so that heat emitted by the ultraviolet lamp ring in the filter main body during working can be effectively conducted and dissipated.

The filtering principle of the filter is as follows:

Fe₂O₃、Fe₃O₄fe mainly²⁺、Fe³⁺And (4) forming. Wherein, Fe₃O₄Fe in (1)²⁺Can be partially oxidized into Fe³⁺The iron oxide is coordinated with water to form a hydroxylated surface, and can react with phosphorus and arsenic ions in wastewater under the actions of electrostatic adsorption, surface complexation, coordination exchange and the like.

Phosphorus in water is mainly H₂PO₄ ^-In the form of iron oxide, under acidic conditions, predominantly Fe (OH)₂ ⁺And Fe (OH)²⁺In the form of the anion (H) of arsenic₂As0₄ ^-And HAs0₄ ^2-) The complex reaction occurs because the electrostatic attraction is adsorbed to the positively charged iron oxide surface. Then, the remaining Fe (OH)²⁺Will react with OH^-Coprecipitation takes place to yield Fe (OH)₃And Fe (OH) formed by hydrolysis of iron ions in the solution₃The ferric hydroxide can generate flocculation to achieve the aim of removing phosphorus in the wastewater.

When the pH is higherAt a value of =1.03-5.35, the As element in water is mainly H3AsO4, H₂AsO₄ ^-And AsO₄ ^3-The FeOOH iron oxyhydroxide which exists in the form of a precipitate and can form with iron ions generates a trace amount of precipitate. Under acidic conditions, iron oxide is predominantly Fe (OH)₂ ⁺And Fe (OH)²⁺In the form of the anion (H) of arsenic₂As0₄ ^-And HAs0₄ ^2-) The complex reaction occurs because the electrostatic attraction is adsorbed to the positively charged iron oxide surface. Then, the remaining Fe (OH)²⁺Will react with OH^-Coprecipitation takes place to yield Fe (OH)₃And Fe (OH) formed by hydrolysis of iron ions in the solution₃The ferric hydroxide can generate flocculation to achieve the aim of removing arsenic in the wastewater.

H₂O₂When the catalyst exists alone, only about 5 percent of atrazine and Fe can be removed²⁺/Fe³⁺The introduction of (2) can promote the degradation of atrazine, Fe²⁺/Fe³⁺The ∙ OH free radical is generated, and the ∙ OH free radical is an important reactant in the atrazine degradation process.

Compared with the substantive characteristics and progress of the prior art, the utility model is:

1. the utility model discloses can the waste water that contains arsenic, phosphorus and atrazine of dynamic processing simultaneously, compare traditional minute many times, the mode of multiple operation processing waste water has improved efficiency greatly, has saved a plurality of middle ponds of handling waste water, has saved a large amount of spaces.

2. The utility model discloses a filter has the function of dismantling renew cartridge and part fast, only needs to unscrew the both ends head, can pour the change with filter core wherein, and the optional filter core that has reached life of changing leaves the filter core that can also continue to use, puts into the filter after the reconfiguration and uses in practicing thrift the cost. Meanwhile, the problem that the traditional sewage filter element is not beneficial to replacing the filter element due to integral forming is also solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the filter according to the present invention;

fig. 3 is an exploded view of the filter head and the main body of the present invention;

FIG. 4 is a schematic view of the filter body according to the present invention;

the reference numbers in the figures are: 1. a sewage pump; 11. an on-off valve A; 12. an on-off valve B; 2. a medicine adding tank; 21. a dosing pump; 22. a dosing valve; 3. a support; 4. and (3) a filter. 41. Sealing the end; 42. a filter housing; 43. an observation hole; 44. an ultraviolet lamp ring; 45 a glass tube; 46. and a filter element.

Detailed Description

Example 1

In the sewage treatment device for wastewater containing arsenic, phosphorus and atrazine, sewage is conveyed to a filter 4 through a sewage pipeline by a sewage pump 1, hydrogen peroxide is injected into the sewage pipeline in front of the filter 4 through a dosing tank 2 and a dosing pump 21 and a pipeline, and the sewage is filtered by the filter 4 and then is discharged outwards through a sewer pipe.

The filter 4 is provided with three filters and is fixedly arranged on the bracket 3.

The main pipe between the sewage pump 1 and the filters 4 is provided with a switch valve A11, and branch pipes flowing into the filters 4 are provided with switch valves B12.

A dosing valve 22 is arranged on a dosing pipeline behind the dosing pump 21.

The filter 4 is cylindrical, the two ends of the filter are end sockets 41, and the middle main body section sequentially comprises from outside to inside: filter housing 42) uv lamp ring 44, glass tube 45 and filter element 46.

The filter element 46 is used by overlapping a plurality of filter elements; the filter core is used for a plurality of superpositions, and the filter core includes quartz sand layer, smokeless coal seam, magnetite layer, ferric oxide layer, no smoke coal seam, quartz sand layer from the entry to the export.

After use, detection shows that the device can achieve the arsenic removal rate of over 98 percent, the phosphorus removal rate of over 93 percent and the atrazine removal rate of over 99 percent.

Claims

1. Contain sewage treatment plant of arsenic, phosphorus and atrazine waste water, its characterized in that: the sewage containing arsenic, phosphorus and atrazine is conveyed to a filter (4) through a sewage pump (1) and a sewage pipeline, hydrogen peroxide is injected into the sewage pipeline in front of the filter through a dosing pump (21) and the pipeline through a dosing tank (2), and the sewage is filtered by the filter (4) and then is discharged outwards through a sewer pipe.

2. The apparatus for treating wastewater containing arsenic, phosphorus and atrazine according to claim 1, wherein: the filter (4) is provided with a plurality of filters and is placed on the bracket (3).

3. The apparatus for treating wastewater containing arsenic, phosphorus and atrazine according to claim 2, wherein: a switching valve A (11) is arranged on a pipeline header pipe between the sewage pump (1) and the filters (4), and a switching valve B (12) is arranged on branch pipes flowing into each filter (4).

4. The apparatus for treating wastewater containing arsenic, phosphorus and atrazine according to claim 1, wherein: a dosing valve (22) is arranged on a dosing pipeline behind the dosing pump (21).

5. The apparatus for treating wastewater containing arsenic, phosphorus and atrazine according to claim 1, wherein: the filter (4) is cylindrical, the two ends of the filter are end sockets (41), and the middle main body section sequentially comprises from outside to inside: a filter shell (42), an ultraviolet lamp ring (44), a glass tube (45) and a filter core (46).

6. The apparatus for treating wastewater containing arsenic, phosphorus and atrazine according to claim 5, wherein: the filter cores (46) are used in a plurality of overlapped modes.

7. The apparatus for treating wastewater containing arsenic, phosphorus and atrazine according to claim 5, wherein: the filter housing (42) is provided with a viewing aperture (43).

8. The apparatus for treating wastewater containing arsenic, phosphorus and atrazine according to claim 5, wherein: and the end socket (41) is provided with heat dissipation ribs.