阅读说明：本技术 一种腌制菜泡菜废浓盐水再生回用处理工艺 (Process for regenerating and recycling waste strong brine from pickled vegetable and pickle ) 是由 孙丹 于 2019-11-27 设计创作，主要内容包括：本发明涉及废料回收处理技术领域,具体涉及一种腌制菜泡菜废浓盐水再生回用处理工艺,其主要包括初级再生系统工艺流程,所述初级再生系统工艺流程分初级过滤工序、空气单独擦洗工序、过滤膜外反洗工序和过滤膜内反洗工序等步骤,其通过在初级过滤过程中不断的对过滤膜进行清洗,保证了过滤膜的清洁程度,在延长了过滤膜的使用寿命,同时过滤膜分离后剩下的浓盐水还会返回前面的环节,进行反复过滤,最终将盐分与水分彻底的过滤分离。(The invention relates to the technical field of waste recovery treatment, in particular to a process for regenerating and recycling waste strong brine from pickled vegetable and pickle.)

1. A process for regenerating and recycling pickled vegetable and pickle waste strong brine is characterized by comprising a primary regeneration system process flow, wherein the primary regeneration system process flow comprises a primary filtering process, an air independent scrubbing process, a filter membrane external backwashing process and a filter membrane internal backwashing process;

in the filtering process, liquid in the raw water tank is pressurized by a primary booster pump and then enters a primary precision filter through a primary bag filter; high-pressure air output by the air compressor enters a first-stage filtering membrane together with liquid discharged by a first-stage precise filter for filtering, the liquid filtered by the first-stage filtering membrane enters a first-stage brine storage tank, and liquid impurities not filtered by the first-stage filtering membrane return to an original water tank;

in the air separate scrubbing process, high-pressure air is blown to the inlet side of the primary filtering membrane through an air compressor, so that liquid flows back to the original water tank, and impurities in the inlet side of the primary filtering membrane are loosened;

in the process of backwashing outside the filtering membrane, an air compressor and a primary membrane backwashing water pump are started, high-pressure air and liquid in a primary brine storage tank are used for cleaning the inlet side of the primary filtering membrane together, and dirt is discharged through a cleaning sewage discharge outlet;

in the process of backwashing inside the filtering membrane, an air compressor and a primary membrane backwashing water pump are started, high-pressure air and liquid in a primary brine storage tank are used for cleaning the outlet side of the primary filtering membrane together, and the liquid in the inlet side of the primary filtering membrane is flushed back to the original water tank.

2. The process of claim 1, wherein the process comprises the steps of: the device also comprises a medicament cleaning process, wherein the liquid medicament in the medicament mixing box in the medicament cleaning process enters the inlet side of the primary filtering membrane through the medicament cleaning pump and the medicament cleaning filter to form a medicament cleaning loop, so that the medicament cleaning effect on the primary filtering membrane is realized.

3. The process of claim 2, wherein the process comprises the following steps: the medicament cleaning process also comprises the step of discharging fresh water in the cleaning water tank from a cleaning sewage outlet after passing through the medicament cleaning filter and the first-stage filtering membrane under the action of the medicament cleaning pump.

4. The process of claim 1, wherein the process comprises the steps of: the process flow of the secondary regeneration system is divided into a secondary filtering process, a secondary washing process, a secondary medicine washing process and a secondary cleaning process;

in the secondary filtering process, liquid in the primary brine storage tank enters a secondary filtering membrane after the pressurization of a secondary booster pump, the liquid filtered by the secondary filtering membrane enters the secondary brine storage tank, and the liquid which is not filtered by the secondary filtering membrane returns to the original water tank;

in the secondary flushing procedure, after the liquid in the primary saline water storage tank is pressurized by the secondary booster pump, the liquid returns to the original tank through the secondary filtering membrane;

in the secondary medicine washing procedure, the liquid medicine in the medicine blending box enters a secondary filtering membrane through a medicine washing pump and a medicine washing filter for medicine washing, and one part of the liquid discharged from the secondary filtering membrane returns to the medicine blending box, and the other part of the liquid is discharged from a washing and sewage discharging outlet;

in the second-stage cleaning procedure, fresh water in the cleaning water tank is discharged from the cleaning sewage outlet after passing through the medicine cleaning filter and the second-stage filtering membrane under the action of the medicine cleaning pump.

5. The process of claim 4, wherein the process comprises the following steps: the three-stage regeneration system comprises a three-stage regeneration system and a three-stage regeneration system, wherein the three-stage regeneration system comprises a three-stage filtering process, a three-stage flushing process, a three-stage medicinal washing process and a three-stage cleaning process;

in the third-stage filtration process, liquid in the second-stage brine storage tank enters the third-stage filtration membrane after the pressurization of the third-stage booster pump, the liquid filtered by the third-stage filtration membrane enters the third-stage brine storage tank, and the liquid not filtered by the third-stage filtration membrane returns to the first-stage brine storage tank;

in the third-stage flushing procedure, after the liquid in the second-stage brine storage tank is pressurized by the third-stage booster pump, the liquid returns to the original tank through the third-stage filtering membrane;

in the third-level medicine washing procedure, liquid medicine in the medicine blending box enters a third-level filtering membrane through a medicine washing pump and a medicine washing filter for medicine washing, and one part of liquid discharged from the third-level filtering membrane returns to the medicine blending box, and the other part of liquid is discharged from a washing and sewage discharging outlet;

in the third-stage cleaning process, fresh water in the cleaning water tank is discharged from the cleaning sewage outlet after passing through the medicine cleaning filter and the third-stage filtering membrane under the action of the medicine cleaning pump.

6. The process of claim 5, wherein the process comprises the steps of: the four-stage regeneration system comprises a four-stage filter process, a four-stage flushing process, a four-stage medicinal washing process and a four-stage cleaning process;

in the fourth-stage filtration process, liquid in the third-stage brine storage tank enters the fourth-stage filtration membrane after being pressurized by the fourth-stage booster pump, the liquid filtered by the fourth-stage filtration membrane enters the fourth-stage brine storage tank, and the liquid which is not filtered by the fourth-stage filtration membrane returns to the second-stage brine storage tank;

in the fourth-stage flushing procedure, liquid in the third-stage brine storage tank returns to the original tank after passing through a fourth-stage filtering membrane after being pressurized by the fourth-stage booster pump;

in the four-stage medicine washing process, the liquid medicine in the medicine blending box enters a four-stage filtering membrane through a medicine washing pump and a medicine washing filter for medicine washing, and one part of the liquid discharged from the four-stage filtering membrane returns to the medicine blending box, and the other part of the liquid is discharged from a washing and sewage discharging outlet;

in the four-stage cleaning process, fresh water in the cleaning water tank is discharged from the cleaning and sewage discharging outlet after passing through the medicine cleaning filter and the four-stage filtering membrane under the action of the medicine cleaning pump.

Technical Field

The invention relates to the technical field of waste recovery treatment, in particular to a process for regenerating and recycling concentrated brine from pickled vegetable and pickle waste.

Background

The pickled pickle is a traditional biological fermentation food in China, the pickled pickle can generate a large amount of pickle waste strong brine in the pickling process, the content of chloride ions in the pickle waste strong brine reaches 10-20%, and if the pickle waste strong brine is not treated, on one hand, the discharge of the pickle waste strong brine can pollute the environment, and on the other hand, the waste of edible salt is also caused.

In the existing treatment mode of the waste strong brine, the strong brine is treated by a mode of passing through a multistage filtering membrane, impurities in the strong brine remained in the pickled vegetable are more, particularly, the working environment of the initial filtering membrane is slightly bad under the pressure action of a booster pump, and the blockage phenomenon is most likely to occur, so that the problems of faults and the like are often caused to a filtering system, the filtering effect is influenced, and the system is inconvenient to maintain.

Disclosure of Invention

The invention provides a process for regenerating and recycling waste strong brine from pickled vegetable and pickle, which ensures the cleanness of a filtering membrane by continuously cleaning the filtering membrane in the primary filtering process, prolongs the service life of the filtering membrane, improves the filtering effect and provides guarantee for the operation of a filtering system.

In order to achieve the purpose, the invention provides the following technical scheme: a process for regenerating and recycling waste strong brine from pickled vegetable and pickle mainly comprises a primary regeneration system process flow, wherein the primary regeneration system process flow is divided into a filtering process, an air independent scrubbing process, a filter membrane external backwashing process and a filter membrane internal backwashing process; in the filtering process, liquid in the raw water tank is pressurized by a primary booster pump and then enters a primary precision filter through a primary bag filter; high-pressure air output by the air compressor enters a first-stage filtering membrane together with liquid discharged by a first-stage precise filter for filtering, the liquid filtered by the first-stage filtering membrane enters a first-stage brine storage tank, and liquid impurities not filtered by the first-stage filtering membrane return to an original water tank; in the air separate scrubbing process, high-pressure air is blown to the inlet side of the primary filtering membrane through an air compressor, so that liquid flows back to the original water tank, and impurities in the inlet side of the primary filtering membrane are loosened; in the process of backwashing outside the filtering membrane, an air compressor and a primary membrane backwashing water pump are started, high-pressure air and liquid in a primary brine storage tank are used for cleaning the inlet side of the primary filtering membrane together, and dirt is discharged through a cleaning sewage discharge outlet; in the process of backwashing inside the filtering membrane, an air compressor and a primary membrane backwashing water pump are started, high-pressure air and liquid in a primary brine storage tank are used for cleaning the outlet side of the primary filtering membrane together, and the liquid in the inlet side of the primary filtering membrane is flushed back to the original water tank.

Preferably, the device further comprises a medicament cleaning process, wherein the medicament liquid in the medicament mixing box enters the inlet side of the primary filtering membrane through the medicament cleaning pump and the medicament cleaning filter to form a medicament cleaning loop, so that the medicament cleaning effect on the primary filtering membrane is realized.

Preferably, the chemical cleaning process further comprises discharging fresh water in the cleaning water tank from the cleaning sewage outlet after passing through the chemical cleaning filter and the primary filtering membrane under the action of the chemical cleaning pump.

Preferably, the method also comprises a secondary regeneration system process flow, wherein the secondary regeneration system process flow is divided into a filtering process, a flushing process, a medicine washing process and a cleaning process; in the filtering process, liquid in the primary brine storage tank enters the secondary filtering membrane after being pressurized by the secondary booster pump, the liquid filtered by the secondary filtering membrane enters the secondary brine storage tank, and the liquid which is not filtered by the secondary filtering membrane returns to the original water tank; in the flushing procedure, after the liquid in the primary saline water storage tank is pressurized by the secondary booster pump, the liquid returns to the original tank through the secondary filtering membrane; in the medicine washing process, liquid medicine in the medicine blending box enters a secondary filtering membrane through a medicine washing pump and a medicine washing filter for medicine washing, and one part of liquid discharged from the secondary filtering membrane returns to the medicine blending box, and the other part of liquid is discharged from a washing sewage discharge outlet; in the cleaning procedure, fresh water in the cleaning water tank is discharged from the cleaning sewage outlet after passing through the medicine cleaning filter and the secondary filtering membrane under the action of the medicine cleaning pump.

Preferably, the method also comprises a three-level regeneration system process flow, wherein the three-level regeneration system process flow is divided into a filtering process, a flushing process, a medicine washing process and a cleaning process; in the filtering process, liquid in the secondary brine storage tank enters the tertiary filtering membrane after being pressurized by the tertiary booster pump, the liquid filtered by the tertiary filtering membrane enters the tertiary brine storage tank, and the liquid which is not filtered by the tertiary filtering membrane returns to the primary brine storage tank; in the flushing procedure, after the liquid in the secondary saline water storage tank is pressurized by the three-stage booster pump, the liquid returns to the original tank through the three-stage filtering membrane; in the medicine washing process, liquid medicine in the medicine blending box enters a three-stage filtering membrane through a medicine washing pump and a medicine washing filter for medicine washing, and one part of liquid discharged from the three-stage filtering membrane returns to the medicine blending box, and the other part of liquid is discharged from a washing sewage discharge outlet; in the cleaning procedure, fresh water in the cleaning water tank is discharged from the cleaning sewage outlet after passing through the medicine cleaning filter and the three-stage filtering membrane under the action of the medicine cleaning pump.

Preferably, the method also comprises a four-stage regeneration system process flow, wherein the four-stage regeneration system process flow is divided into a filtering process, a flushing process, a medicine washing process and a cleaning process; in the filtering process, liquid in the three-level brine storage tank enters the four-level filtering membrane after being pressurized by the four-level booster pump, the liquid filtered by the four-level filtering membrane enters the four-level brine storage tank, and the liquid which is not filtered by the four-level filtering membrane returns to the two-level brine storage tank; in the flushing procedure, after the liquid in the three-level saline water storage tank is pressurized by the four-level booster pump, the liquid returns to the original tank through the four-level filtering membrane; in the medicine washing process, liquid medicine in the medicine blending box enters a four-stage filtering membrane through a medicine washing pump and a medicine washing filter for medicine washing, and one part of liquid discharged from the four-stage filtering membrane returns to the medicine blending box, and the other part of liquid is discharged from a washing and sewage discharging outlet; in the cleaning procedure, fresh water in the cleaning water tank is discharged from the cleaning and sewage discharging outlet after passing through the medicine cleaning filter and the quaternary filtration membrane under the action of the medicine cleaning pump.

The invention has the beneficial effects that: this design salted pickle strong brine regeneration and reuse system operation process flow, handle high enriched waste brine, output salt solution is limpid and transparent, do not reduce the salt solution concentration, whole filtering process does not add any chemical agent, full physics nature is filtered, output (sodium chloride) salt solution detects through authority and reaches edible salt sanitary standard, consequently can direct retrieval and utilization, replace finished product pickle bagging-off salt solution, replace and recycle in traditional pickle secondary fermentation salt solution, reuse in other products and the food that need to use salt solution, also can be with its evaporation crystallization, the crystal salt that evaporates out detects through authority and reaches edible salt sanitary standard, reuse in fresh vegetables and pickle. After 2 years of operation verification, the operation is stable and reliable, the brine recovery rate is 95% -98%, the zero discharge is achieved, and the worldwide problem that the high waste brine (sodium chloride) of the pickled vegetable and pickle is difficult to discharge up to the standard is thoroughly solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the essential components required for the process of the present invention;

FIG. 2 is a schematic diagram of the relationship of the components of the primary regeneration system process flow in the process of the present invention;

FIG. 3 is a schematic diagram showing the relationship of the components of the process flow of the secondary regeneration system in the process of the present invention;

FIG. 4 is a schematic diagram of the relationship of the components of a three-stage regeneration system process flow in the process of the present invention;

FIG. 5 is a schematic diagram showing the relationship of the components of the four-stage regeneration system process flow in the process of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.