CN112850971A

CN112850971A - Sewage treatment method

Info

Publication number: CN112850971A
Application number: CN202110225628.1A
Authority: CN
Inventors: 郝峰; 陈洪春; 徐军; 马思麒
Original assignee: Ningxia Nongken Helanshan Dairy Co ltd
Current assignee: Ningxia Nongken Helanshan Dairy Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-05-28

Abstract

The invention is suitable for the technical field of sewage treatment, in particular to a sewage treatment method, which comprises the steps of preliminarily filtering sewage, intensively storing filtered filtrate, adding a certain amount of flocculating agent, and fully mixing the filtrate by stirring; then conveying the sewage to a compression filtering unit for compression filtering, and stopping conveying the sewage when the cavity of the compression filtering device is fully filled with flocculates; in the process, flocculate in the water is removed to ensure the quality of the effluent, the effluent can be discharged or recycled after reaching the standard, and the improvement realizes good technical effect, has lower cost and is easy to realize, thereby having wide application prospect.

Description

Sewage treatment method

Technical Field

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

Background

Sewage may be defined as a waste-laden liquid or water mixed with ground water, surface water, snow storms, etc. discharged from residential, institutional, commercial or industrial areas from the point of view of the source of the sewage. Sewage is classified into many categories, and there are many techniques and processes for reducing the environmental impact of sewage accordingly.

Various kinds of sewage can be generated in the breeding production, including production wastewater, domestic sewage, equipment washing water, equipment and site washing water and the like, if the sewage is discharged without being treated, the pollution of different properties and different degrees of water bodies can be caused, so that the health of human beings is harmed, and the industrial and agricultural production is influenced. The sewage treatment is a technological process which has the function of purifying water quality through various physical and chemical means so as to meet the discharge requirement.

In the existing aquaculture sewage treatment technology, the defects of incomplete treatment, long treatment time and the like exist in the treatment process of water containing a large amount of impurities.

Disclosure of Invention

The present invention is directed to a method for treating wastewater to solve the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a sewage treatment method comprises the following steps:

step 1), firstly, primarily filtering raw sewage to remove large-volume impurities in the water; (the impurity removal mode of the large-volume impurities is mechanical impurity removal, and other impurities except silt forage grass residues in the water can be greatly reduced after the mechanical impurity removal);

step 2), adding a flocculating agent into the filtrate obtained by filtering in the step 1), and uniformly stirring and mixing; wherein, the flocculation precipitation method by adding the flocculating agent can flocculate and agglomerate the impurities in the water, thereby facilitating the post-treatment;

step 3), conveying the product obtained in the step 2) to a compression filtering unit, and filtering flocculates in water through the unit; wherein, the compression filtering unit can greatly reduce the content of flocculate in water and improve the water quality of effluent;

step 4), after the materials in the filter unit to be compressed in the step 3) are completely filled, stopping supplying the sewage to be treated;

and 5) opening the compression filtering unit in the step 4), unloading, closing the compression filtering unit after unloading is finished, and repeating the step 3).

In the process, flocculate in the water is removed to ensure the quality of the effluent, the effluent can be discharged or recycled after reaching the standard, and the improvement realizes good technical effect, has lower cost and is easy to realize, thereby having wide application prospect.

The sewage treatment method of the invention comprises the following steps: in the step 2), the filtrate obtained by filtering in the step 1) enters a flocculation tank, a flocculating agent is added, and the flocculating agent and the stirring pump are matched to uniformly mix the filtrate.

The sewage treatment method of the invention comprises the following steps: in the step 3), the product obtained in the step 2) is conveyed to a compression filtration unit through a pump. Wherein, carry out certain compression filtration operation to sewage through the initial pressure that pump itself provided, carry out last compression drainage and the work of unloading through hydraulic means at last.

Further scheme: the compression filtering unit is provided with a three-way pipe and a hydraulic device, and the hydraulic device is communicated with the three-way pipe;

wherein, the three-way pipe is provided with a filter pipe at one end far away from the hydraulic device.

Preferably: the three-way pipe is provided with a discharge port at one side close to the filter pipe, and a gate II is arranged inside the discharge port.

Preferably: a water inlet is formed in the three-way pipe, and a gate I is installed on the water inlet.

Preferably: a plurality of switch structures are installed on the hydraulic device and respectively comprise a travel switch I, a travel switch II and a travel switch III.

Compared with the prior art, the invention has the beneficial effects that:

firstly, primarily filtering sewage, intensively storing filtered filtrate, adding a certain amount of flocculating agent, and fully mixing the flocculating agent and the filtrate by stirring; then conveying the sewage to a compression filtering unit for compression filtering, and stopping conveying the sewage when the cavity of the compression filtering device is fully filled with flocculates; in the process, flocculate in the water is removed to ensure the quality of the effluent, the effluent can be discharged or recycled after reaching the standard, and the improvement realizes good technical effect, has lower cost and is easy to realize, thereby having wide application prospect.

Drawings

FIG. 1 is a flow chart of the sewage treatment method of the present invention.

FIG. 2 is a view showing a configuration of a compression filtration unit in the sewage treatment method of the present invention.

In the figure: 1-a water inlet; 2-a gate I; 3-a three-way pipe; 4-a filter tube; 5-gate II; 6-discharging port; 7-a hydraulic device; 8-a travel switch I; 9-a travel switch II; 10-travel switch III.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to specific embodiments.

In the embodiment of the present invention, as shown in fig. 1 and fig. 2, the method includes the following steps:

Specifically, in the step 2), the filtrate obtained by filtering in the step 1) enters a flocculation tank, a flocculating agent is added, and the filtrate is uniformly mixed by matching with a stirring pump; in the step 3), the product obtained in the step 2) is conveyed to a compression filtration unit through a pump. Wherein, carry out certain compression filtration operation to sewage through the initial pressure that pump itself provided, carry out last compression drainage and the work of unloading through hydraulic means at last.

The compression filtering unit is provided with a three-way pipe 3 and a hydraulic device 7, and the hydraulic device 7 is communicated with the three-way pipe 3; wherein, a filter pipe 4 is arranged at one end of the three-way pipe 3 far away from the hydraulic device 7; a discharge port 6 is formed in one side, close to the filtering pipe 4, of the three-way pipe 3, and a gate II 5 is installed inside the discharge port 6; a water inlet 1 is formed in the three-way pipe 3, and a gate I2 is arranged on the water inlet 1; the hydraulic device 7 is provided with a plurality of switch structures (in the description of the present invention, unless otherwise specified, "a plurality" means two or more), which are a stroke switch i 8, a stroke switch ii 9, and a stroke switch iii 10, respectively.

Specifically, the method comprises the following steps:

step 1, carrying out primary impurity removal operation on a sewage source in a grid mode to ensure that the sewage does not contain other impurities such as gloves, masks, water bottles and the like;

step 2, conveying the primarily filtered sewage to a flocculation sedimentation tank through a pump, intelligently controlling the start and stop of the pump by matching with a liquid level switch, and stopping water injection after a certain amount of sewage is added;

step 3, quantitatively adding the prepared flocculating agent into a flocculation sedimentation tank by matching with a weighing sensor or a flowmeter through a pump, and timely adjusting the adding amount of the flocculating agent according to actual conditions;

and 4, starting the stirring pump while adding the flocculating agent, and adjusting the rotating speed and the stirring time of the stirring pump in real time according to the field condition so as to achieve the optimal flocculation effect.

Step 5, after the flocculation is solidified, sending the sewage to a compression filtering unit through a pump, wherein the unit consists of a water inlet 1, a gate I2, a three-way pipe 3, a filtering pipe 4, a gate II 5, a discharge hole 6 and a hydraulic device 7, and the concrete condition is shown in figure 2;

step 6, sending the sewage to a compression filtering unit through the pressure of a pump, enabling liquid to flow out through holes of a filtering pipe and enter a water collecting tank, and enabling filter residues to remain in the filtering pipe to continuously supply the sewage;

step 7, when the whole filter pipe cavity is filled with filter residues, the water feed pump and the gate I2 are controlled to be closed through the pressure gauge, the hydraulic device 7 is started, the materials in the filter pipe are extruded for the second time, redundant water is discharged, and the water content of the materials is reduced;

and 8, controlling the opening of a gate II 5 of the discharge port 6 through a travel switch II 9 of the hydraulic device 7, continuously operating the hydraulic device 7, completely ejecting the material out of the filter pipe 4, controlling the hydraulic device 7 to stop advancing and start to reversely operate through a travel switch III 10, and controlling the stop of the hydraulic device through a travel switch I8.

Step 9, after the hydraulic device 7 is in place, closing the gate II 5 of the discharge port 6, opening the gate I2 of the water inlet 1 and the water feeding pump to supply water, and repeating the step 6-9;

and step 10, collecting the filtrate through a water collecting tank, wherein the effluent can be recycled and is used for plant greening, ground and equipment washing and the like.

A sewage treatment method, carry on the preliminary filtration to the sewage, the filtrate after filtering is concentrated and stored, then add a certain amount of flocculating agent, make it fully mix through stirring; then conveying the sewage to a compression filtering unit for compression filtering, and stopping conveying the sewage when the cavity of the compression filtering device is fully filled with flocculates; in the process, flocculate in the water is removed to ensure the quality of the effluent, the effluent can be discharged or recycled after reaching the standard, and the improvement realizes good technical effect, has lower cost and is easy to realize, thereby having wide application prospect.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A sewage treatment method is characterized in that,

the method comprises the following steps:

step 1), firstly, primarily filtering raw sewage to remove large-volume impurities in the water;

step 2), adding a flocculating agent into the filtrate obtained by filtering in the step 1), and uniformly stirring and mixing;

step 3), conveying the product obtained in the step 2) to a compression filtering unit, and filtering flocculates in water through the unit;

2. The sewage treatment method according to claim 1, wherein in the step 2), the filtrate obtained by filtering in the step 1) enters a flocculation tank, a flocculating agent is added, and the flocculating agent and the stirring pump are matched to uniformly mix the filtrate.

3. The wastewater treatment method according to claim 1, wherein in the step 3), the product obtained in the step 2) is conveyed to a compression filtration unit through a pump.

4. The method according to claim 3,

the compression filtering unit is provided with a three-way pipe and a hydraulic device, and the hydraulic device is communicated with the three-way pipe;

5. The sewage treatment method according to claim 4, wherein the three-way pipe is provided with a discharge port at one side close to the filtering pipe, and a gate II is arranged in the discharge port.

6. The sewage treatment method according to claim 4, wherein the three-way pipe is provided with a water inlet, and the water inlet is provided with a gate I.

7. The wastewater treatment method according to claim 4, wherein a plurality of switch structures are arranged on the hydraulic device, and the switch structures are a travel switch I, a travel switch II and a travel switch III respectively.