阅读说明：本技术 一种砂罐线上再生方法 (on-line regeneration method for sand tank ) 是由 张金山 夏志先 于 2019-09-11 设计创作，主要内容包括：本发明提供了一种砂罐线上再生方法,其特征在于,由如下的步骤实现：S1.采用清洗剂I对砂罐内的砂,进行至少一次的循环清洗；S2.采用清洗剂I对砂罐内的砂,进行至少一次的浸泡清洗；S3.采用水将砂罐内的砂清洗干净；所述清洗剂I为包括至少两种的酸。该方法能够实现在线清洗,无需频繁拆罐。(the invention provides an on-line regeneration method for a sand tank, which is characterized by comprising the following steps of: s1, performing at least one-time circulating cleaning on sand in a sand tank by using a cleaning agent I; s2, performing at least one soaking and cleaning on the sand in the sand tank by adopting a cleaning agent I; s3, cleaning sand in the sand tank by using water; the cleaning agent I is an acid containing at least two types. The method can realize online cleaning without frequently disassembling the tank.)

1. an on-line regeneration method for a sand tank is characterized by comprising the following steps:

s1, performing at least one-time circulating cleaning on sand in a sand tank by using a cleaning agent I;

s2, performing at least one soaking and cleaning on the sand in the sand tank by adopting a cleaning agent I;

S3, cleaning sand in the sand tank by using water;

The cleaning agent I is an acid containing at least two types.

2. The sand tank on-line reclamation method as recited in claim 1, wherein:

The acid is selected from at least one of inorganic acid and at least one of polybasic alkyl acid with the carbon number not more than 10.

3. The sand tank on-line reclamation method as recited in claim 1, wherein:

The mass ratio of the inorganic acid to the polybasic alkyl acid is 1: 1-2.

4. The sand tank on-line reclamation method as recited in claim 1, wherein:

The inorganic acid is selected from one or more of halogen acid and sulfuric acid;

the polybasic alkyl acid is selected from one or more of binary, ternary or quaternary alkyl acids.

5. the sand tank on-line reclamation method as recited in claim 1, wherein:

the cleaning agent I is prepared by mixing the following components in parts by mass:

6. the sand tank on-line reclamation method as recited in claim 1, wherein:

before step S3, steps S4 and S5 are also included;

the steps S4 and S5 are as follows:

S4, performing at least one-time circulating cleaning on the sand in the sand tank by using a cleaning agent II;

s5, performing at least one soaking and cleaning on the sand in the sand tank by using a cleaning agent II;

The cleaning agent II is selected from one or more of an alkaline agent and an anionic surfactant.

7. the sand tank on-line reclamation method as recited in claim 6, wherein:

when the cleaning agent II contains an alkaline agent;

the mass percentage concentration of the aqueous solution of the alkaline agent is 1-10%;

when cleaning agent II contains an anionic surfactant;

the mass percentage concentration of the aqueous solution of the anionic surfactant is 1-10%.

8. a pressure canister suitable for use in an on-line regeneration method of a sand canister as claimed in claims 1-7, characterized in that: comprises a pressure filter tank body and a cleaning liquid component;

the cleaning solution component comprises a cleaning solution storage tank and a liquid circulating pump;

The cleaning liquid storage tank is provided with a first liquid inlet and outlet end and a second liquid inlet and outlet end;

The first liquid inlet and outlet end is communicated with the pressure filter tank body;

and the second liquid inlet and outlet end is communicated with the pressure filter tank body through a liquid circulating pump.

9. A pressure canister as in claim 8 wherein:

the pressure filter tank body is provided with a sand discharge opening which can be opened and closed below the discharge opening.

10. a pressure canister as in claim 8 wherein:

the pressure canister body has a viewing window thereon.

Technical Field

the invention belongs to the field of maintenance of pretreatment equipment, and particularly relates to an on-line regeneration method for a sand tank.

background

In the process of water treatment technology, pretreatment is an extremely important link, and a filtration link is one of the essential conditions in the water treatment technology. The general filtering container is selected from common fast filtering tank, double valve filtering tank, multilayer filtering material filtering tank, siphon filtering tank, valveless filtering tank, movable cover filtering tank, pressure filtering tank, microfilter, plate-turning valve filtering tank, etc. The pressure filter tank is convenient to move, easy to mount on the horse, low in speed and good in water quality, and is most widely used in small water stations.

the disadvantages of the prior art processes are as follows:

(1) Is only suitable for small-sized water plants;

(2) the filter layer can not be seen in the running process;

(3) the sand discharge port is small, and the sand discharge is inconvenient;

(4) the equipment is generally small and the water quantity is limited;

(5) The filter material replacement is time-consuming and labor-consuming.

The reasons for the above-mentioned drawbacks are: because the pressure filter tank is a pressure container, the tightness is better generally, and the design of the sand discharge port is smaller. In the use, the filter material in the sand tank generally needs to be changed once a year, and when the filter material is changed, the sand in the tank needs to be completely taken out, and new sand or regenerated sand is put in to be continuously used. The fully-closed pressure container is not suitable for being made too large, is inconvenient to carry and has higher cost.

disclosure of Invention

The invention aims to overcome the defects and designs a method which can realize online cleaning and does not need frequent tank dismantling.

The invention provides an on-line regeneration method for a sand tank, which is characterized by comprising the following steps of: s1, performing at least one-time circulating cleaning on sand in a sand tank by using a cleaning agent I;

s2, performing at least one soaking and cleaning on the sand in the sand tank by adopting a cleaning agent I;

S3, cleaning sand in the sand tank by using water;

the cleaning agent I is an acid containing at least two kinds of acids.

further, the invention provides a regeneration method on a sand tank line, which is characterized in that: the acid is selected from at least one of inorganic acid and at least one of polybasic alkyl acid with carbon number not more than 10.

Further, the invention provides a regeneration method on a sand tank line, which is characterized in that: the mass ratio of the inorganic acid to the polybasic alkyl acid is 1: 1-2.

further, the invention provides a regeneration method on a sand tank line, which is characterized in that: the inorganic acid is selected from one or more of halogen acid and sulfur acid;

the polybasic alkyl acid is selected from one or more of binary, ternary or quaternary alkyl acids.

further, the invention provides a regeneration method on a sand tank line, which is characterized in that: the cleaning agent I is prepared by mixing the following components in parts by mass:

1-10 parts of hydrochloric acid

5-20 parts of citric acid

1-10 parts of hydrofluoric acid

Oxalic acid 1-10 parts

2-10 parts of sulfuric acid

70-90 parts of water.

Further, the invention provides a regeneration method on a sand tank line, which is characterized in that: before step S3, steps S4 and S5 are also included;

The above steps S4 and S5 are as follows:

s4, performing at least one-time circulating cleaning on the sand in the sand tank by using a cleaning agent II;

s5, performing at least one soaking and cleaning on the sand in the sand tank by using a cleaning agent II;

The cleaning agent II is one or more selected from alkaline agent and anionic surfactant.

Further, the invention provides a regeneration method on a sand tank line, which is characterized in that: when the cleaning agent II contains an alkaline agent;

The mass percentage concentration of the aqueous solution of the alkaline agent is 1-10%;

when cleaning agent II contains an anionic surfactant;

the mass percentage concentration of the aqueous solution of the anionic surfactant is 1-10%.

In addition, the invention also provides a pressure filter tank, which is suitable for the on-line regeneration method of the sand tank, and is characterized in that: comprises a pressure filter tank body and a cleaning liquid component;

the cleaning liquid component comprises a cleaning liquid storage tank and a liquid circulating pump;

the cleaning liquid storage tank is provided with a first liquid inlet and outlet end and a second liquid inlet and outlet end;

the first liquid inlet and outlet end is communicated with the pressure filter tank body;

the second liquid inlet and outlet end is communicated with the pressure filter tank body through a liquid circulating pump.

further, the present invention provides a pressure canister, further characterized in that: the pressure filter tank body is provided with a sand discharge opening which can be opened and closed below the discharge opening.

Further, the present invention provides a pressure canister, further characterized in that: the pressure filter tank body is provided with a visible window.

The invention has the following functions and effects:

1. The reuse of the sand material in the sand tank is realized through online cleaning;

2. The problem that the sand waste is difficult to treat is effectively avoided, and recycling is realized;

3. the manhole opening is arranged below the sand tank, so that sand can be discharged outwards conveniently;

4. the toughened glass layer is put to the sand tank side, conveniently observes the filter material condition.

drawings

FIG. 1 is a schematic structural view of a pressure canister according to an embodiment.

Detailed Description

as shown in FIG. 1, the present embodiment provides a pressure canister comprising a pressure canister body and a cleaning fluid assembly;

the pressure filter tank body is of a structure and a shape of a pressure filter tank sold in the market, and the embodiment focuses on the improvement of the conventional pressure filter tank;

The top of the pressure filter tank body is provided with an upper manhole, and the bottom of the pressure filter tank body is provided with a lower manhole and an outlet hole;

the lower manhole is an openable structure and is fixedly arranged between the outlet hole and the pressure filter tank body;

The top of the pressure filter tank body is also provided with two lifting lugs, and the opening of the main body part of the equipment can be realized by applying force upwards to the two lifting lugs;

the left side part of the pressure filter tank body is provided with a water inlet at the upper part and a discharge hole at the lower part;

The whole pressure filter tank body structure part is supported on a working position through a support leg;

The pressure filter tank body is also provided with an observation window made of transparent material, and the condition in the equipment can be observed through the observation window.

the right side part of the pressure filter tank body is provided with a first liquid inlet and outlet end above and a second liquid inlet and outlet end below;

The cleaning liquid component comprises a liquid circulating pump and a cleaning water tank;

The cleaning water tank is internally provided with cleaning liquid and comprises a first liquid inlet and outlet end and a second liquid inlet and outlet end;

the first liquid inlet and outlet end of the cleaning water tank is communicated with the first liquid inlet and outlet end of the pressure filter tank body through a water pipe to form a first passage;

the second liquid inlet and outlet end of the cleaning water tank is communicated with the second liquid inlet and outlet end of the pressure filter tank body through a water pipe to form a second passage;

the cleaning water tank and the pressure filter tank body are positioned on an annular passage through the first passage and the second passage;

The liquid circulation pump is arranged on the second passage and provides liquid circulation for the whole annular passage.

the specific cleaning method comprises the following steps:

s1, preparing a mixed acidic solution by combining 2 parts of hydrochloric acid, 10 parts of citric acid, 2 parts of hydrofluoric acid, 2 parts of oxalic acid and 4 parts of sulfuric acid with 80 parts of pure water for daily online cleaning, placing the mixed acidic solution in a cleaning water tank, starting a circulating pump to circulate cleaning liquid in a sand tank, soaking for one hour for two hours for circulation, then circulating for two hours, and then washing with clean water.

2. if organic matter or oil matter exists in the inlet water, 1-10% of alkali and 1-10% of anionic surfactant can be selected for cleaning after conventional acid cleaning. The dosage is adjusted according to the water quality.

3. When jar interior sand material live time overlength, when unable through online cleaning resumes normal use, accessible jack lifts the sand jar by the lower part or lifts by the lug with the crane with the sand jar, opens manhole under the below, and when sand material discharge partly back, open the discharge opening, continue to dash out the sand with water pipe or other cleaning equipment, can change the sand in the sand jar is whole, labour saving and time saving.