CN110040887A - A kind of organic liquid waste processing method and processing device - Google Patents

Abstract

The invention discloses a kind of organic liquid waste processing method and processing devices, the following steps are included: initial filter, electrolysis, coarse filtration and refined filtration, organic liquid waste handles solidification equipment, including electrolytic cell and the lautertuns being connected to electrolytic cell, electrolyte tank is equipped with above the electrolytic cell, the concentration meter that the side wall of upper part of the electrolytic cell is equipped with wastewater feed pipe and is connected in parallel on wastewater feed pipe, light electrolysis device is equipped in electrolytic cell, the bottom of electrolytic tank is equipped with sewage pipe, the side wall of the electrolytic cell is equipped with the drain pipe being connected to lautertuns, the feed end of drain pipe in electrolytic cell is connected with filter core, multiple filtration film is equipped in the lautertuns.Present invention tool is by carrying out light electrolysis to organic liquid waste or electrolyte is added, and increases the flocculate in organic liquid waste, adsorbs the organic matter in organic liquid waste by flocculate, reduces the production cost of enterprise, reduce purifying step.

Description

A kind of organic waste liquid treatment method and device

technical field

The invention relates to the field of organic waste liquid treatment, in particular to a method and device for organic waste liquid treatment.

Background technique

Organic waste liquid: In domestic sewage, food processing and papermaking and other industrial waste water, it contains organic substances such as carbohydrates, proteins, oils, and lignin. These substances are present in the sewage in a suspended or dissolved state and can be decomposed by the biochemical action of microorganisms. Oxygen is consumed in the process of its decomposition, so it is called oxygen-consuming pollutants. This pollutant can reduce dissolved oxygen in the water, affecting the growth of fish and other aquatic life. After the dissolved oxygen in the water is exhausted, the organic matter undergoes anaerobic decomposition, producing unpleasant odors such as hydrogen sulfide, ammonia and mercaptans, which deteriorate the water quality. The composition of organic matter in water is very complex, and the concentration of oxygen-consuming organic matter is usually expressed by the amount of oxygen consumed in the biochemical decomposition of oxygen-consuming substances per unit volume of water. At present, the treatment method of organic waste liquid is to add various flocculants to the waste liquid, filter, add flocculants again, and filter again to filter out the organic matter in the organic waste liquid. The amount of effluent is relatively large, which increases the treatment cost of organic waste liquid.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an organic waste liquid treatment method and device with low treatment cost and short production cycle.

The purpose of this invention is to realize through the following technical solutions:

A method for treating organic waste liquid, comprising the following steps:

(1) primary filtration: carry out primary filtration to the organic waste liquid, for filtering out the suspended matter in the organic waste liquid, for improving the efficiency of electrolysis;

(2) Electrolysis: the organic waste liquid is introduced into the electrolytic cell, and a microcurrent is passed into the organic waste liquid in the electrolytic cell for electrolysis to the organic matter precipitation in the organic waste liquid, or an electrolyte is added to the organic waste liquid, and the electrolyte is added. When it is necessary to stir the organic waste liquid and electrolyte in the electrolytic cell evenly, let it stand to precipitate the organic matter in the organic waste liquid. There are two methods for precipitating the organic matter in the organic waste liquid, which can flexibly treat the organic waste liquid and improve the organic waste. Liquid treatment efficiency;

(3) rough filtration: the organic waste liquid in the upper part of the electrolysis tank is subjected to rough filtration through the filter element, and by setting the rough filtration step, the filtration efficiency of the waste liquid in the electrolytic tank can be improved to shorten the filtration time;

(4) Fine filtration: the waste liquid after rough filtration is sent to the filter tank, and then discharged into the clear water tank after fine filtration through the filter membrane at the bottom of the filter tank. efficiency, while increasing the service life of the filter membrane.

The value of the microcurrent is 1-3 amps.

An organic waste liquid treatment device, comprising an electrolytic cell and a filter tank communicated with the electrolytic cell, an electrolyte tank is arranged above the electrolytic cell, a waste water feeding pipe is arranged on the side wall of the upper part of the electrolytic cell, and a waste water feed pipe is connected in parallel. The concentration meter on the tube, the electrolytic cell is provided with a micro-electrolyzer, and the micro-electrolyzer includes a support frame installed on the electrolytic cell, a telescopic rod installed on the support frame, and an electrode sheet set at both ends of the telescopic rod, so The electrode sheet group is placed in the organic waste liquid, the telescopic rod is provided with a spring power cord connected to the electrode sheet group, the support frame is provided with an adjustable transformer connected with the spring power cord, and the bottom of the electrolytic cell is provided with a spring power cord. A drain pipe is provided, the side wall of the electrolytic cell is provided with a drain pipe that communicates with the filter tank, the feed end of the drain pipe in the electrolytic cell is connected with a filter element, and the drain pipe outside the electrolytic cell is provided with a valve , There is a backflushing pipe on the drain pipe between the valve and the filter tank, and the filter tank is equipped with a multi-layer filter membrane. Combined with the organic waste liquid treatment method, a device including two treatment methods is designed, which can improve the organic waste liquid. processing efficiency.

The electrolyte tank is provided with a strong electrolyzer, the bottom of the electrolyte tank is provided with an electrolyte pipe connected to the waste water feed pipe in the rear section of the concentration meter, and the outlet end of the waste water feed pipe is provided with a mixing turbine, Electrolyte tank and mixing turbine can reduce mixing steps and improve processing efficiency.

A sealing cover is hinged on the top of the electrolytic cell, and by arranging the sealing cover, the unpleasant gas generated by the organic waste liquid during electrolysis of the organic waste liquid can be prevented from volatilizing and polluting the air.

An observation window is processed on the side wall of the electrolytic cell, and by setting the observation window, the staff's control over the treatment process is improved.

The present invention has the following effects:

(1) By micro-electrolysis or adding electrolyte to the organic waste liquid, the flocs in the organic waste liquid are increased, and the organic substances in the organic waste liquid are adsorbed by the flocs, which reduces the production cost of the enterprise and reduces the purification steps;

(2) By setting the concentration meter and the adjustable transformer, the voltage or current of the adjustable transformer can be set according to the turbidity of the organic waste water, so as to ensure that the organic waste liquid can be electrolyzed normally;

(3) By setting the electrolyte tank, it can avoid the burning or explosion of the organic waste liquid when the organic waste liquid is directly electrolyzed and the current is too large, and the safety of the electrolysis process is improved;

(4) By setting the mixing turbine, the flocs produced by electrolysis in the electrolyte tank can be mixed with the organics during the transmission of the organic waste liquid, which reduces the process of later stirring and shortens the mixing time;

(5) By setting the backflushing pipe, the filter element can be backflushed, so as to avoid the blockage of the filter element and reduce the production efficiency, and at the same time prolong the service life of the filter element;

(6) By setting the observation window, the precipitation process of the organic waste liquid can be easily observed;

(7) By setting the telescopic rod, the distance between the electrode sheet groups can be adjusted according to the concentration of the organic waste liquid, so as to ensure the stability of the electrolysis reaction.

Description of drawings

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

FIG. 2 is a schematic view of the structure of the micro-electrolyzer of the present invention.

Reference numerals: 1. Electrolytic cell; 11. Waste water feeding pipe; 12. Concentration meter; 13. Mixing turbine; 14. Sewage pipe; 15. Discharge pipe; 16. Sealing cover; Filter element; 2. Filter tank; 21. Filter membrane; 3. Electrolyte tank; 31. Strong electrolyzer; 32. Electrolyte tube; 4. Micro-electrolyzer; 41. Support frame; 42. Telescopic rod; 43. Electrode group; 44, spring power cord; 45, adjustable transformer; 5, valve; 6, blowback pipe.

Detailed ways

Example 1

The organic waste liquid treatment method provided by the present embodiment comprises the following steps:

(1) Preliminary filtration: perform preliminary filtration on the organic waste liquid with a pH value of 3 to 4 and a density at room temperature greater than 1.0×10^3 kg/m ³ , and filter out the suspended solids in the organic waste liquid.

(2) electrolysis: the organic waste liquid is introduced into the electrolytic cell 1, and the microcurrent of 1-3 ampere direct current is passed into the organic waste liquid in the electrolytic cell 1 for electrolysis, and the material of the anode of the electrode sheet group 43 can be made of aluminum electrodes, At this time, when the organic waste liquid is electrolyzed by the micro-current, the micro-current reacts with the organic waste liquid to produce calcium-containing compounds, and these calcium-containing compounds and the organic substances in the organic waste liquid are adsorbed to each other and precipitated at the bottom of the electrolytic cell 1, thereby removing the organic waste The organic matter in the liquid is concentrated to improve the treatment efficiency of the organic matter in the organic waste liquid;

(3) rough filtration: after the electrolysis of the organic waste liquid, the flocs produced are deposited on the bottom of the electrolytic cell 1, and the waste liquid on the top of the electrolytic cell 1 is filtered out by the filter element 18 at this time, for separating the organic matter in the organic waste liquid;

(4) Fine filtration: the waste liquid after the rough filtration of the electrolytic tank 1 is sent to the filter tank 2, and the waste liquid is subjected to final fine filtration through the filter membrane 21 in the filter tank 2 to obtain the waste water that can be discharged up to the standard, and the The waste water discharged up to the standard is discharged into the clear water tank for testing to check the treatment results of the organic waste liquid.

This embodiment is suitable for the treatment when the concentration of the organic waste liquid is low. When the micro-current is applied for electrolysis, calcium-containing compounds are produced with the organic waste liquid. Such compounds and the organic substances in the organic waste liquid are mutually adsorbed and precipitated at the bottom of the electrolytic cell, reducing the reduction of the amount of calcium. The treatment cost of organic waste liquid is improved, and the treatment efficiency of organic waste liquid is improved. The organic waste liquid after fine filtration was tested, and the test results showed that the pH value was 6.8 and the density was 1.15×10^3kg/m ³ , which met the standard of wastewater discharge.

Example 2

This embodiment is basically the same as Embodiment 1, except that the material of the anode of the electrode sheet group 43 in step (2) is changed to iron electrodes. After the iron electrodes are charged with a microcurrent, the organic waste liquid is electrolyzed, and ferrous ions are generated to generate ferrous ions. The organic matter in the liquid is flocculated.

The organic waste liquid after fine filtration was tested, and the test results showed that the pH value was 7.6 and the density was 1.2×10^3kg/m ³ , which met the standard of wastewater discharge.

Example 3

This example is basically the same as Example 1. The material of the anode of the electrode sheet group 43 in step (2) is changed to a stainless steel electrode, and the temperature during electrolysis is raised to 80°C. Electrolysis is performed to generate hydroxyl groups to flocculate the organic matter in the organic waste liquid.

The organic waste liquid after fine filtration was tested, and the test results showed that the pH value was 7.4 and the density was 1.3×10^3kg/m ³ , which met the standard of wastewater discharge.

Example 4

The organic waste liquid treatment method provided by the present embodiment comprises the following steps:

(1) Primary filtration: perform primary filtration on the organic waste liquid with a pH value of 3 to 4 and a density greater than 1.0×10^3kg/m ³ at room temperature, and filter out the suspended solids in the organic waste liquid

(2) electrolysis: organic waste liquid is introduced into electrolytic cell 1, and electrolyte solution is added in organic waste liquid, described electrolytic solution is the floc in strong electrolyte, and organic waste in electrolytic cell 1 is required when adding electrolytic solution The liquid is stirred, and after the stirring is completed, the organic waste water is allowed to stand until the organic matter in the organic waste liquid and the flocs in the electrolyte are adsorbed and precipitated at the bottom of the electrolytic cell 1;

(3) rough filtration: after the precipitation of the organic waste liquid, the flocs produced are deposited on the bottom of the electrolytic cell 1, and the filtrate on the top of the electrolytic cell 1 is filtered out by the filter element 18 at this time, for separating the organic matter in the organic waste liquid;

(4) fine filtration: the waste liquid after the rough filtration in the electrolytic tank 1 is sent to the filter tank 2, and the waste liquid is subjected to final fine filtration through the filter membrane 21 in the filter tank 2 to obtain the waste water that can be discharged up to the standard, and The waste water discharged up to the standard is discharged into the clean water tank for testing to check the treatment results of organic waste liquid.

This embodiment is suitable for the treatment when the concentration of organic waste liquid is relatively high. Adding electrolyzed electrolyte will easily cause explosion or burning danger due to the direct electrolysis of organic waste liquid with relatively high concentration. Adding electrolyzed electrolyte can reduce organic The concentration of waste liquid improves the safety factor of organic waste liquid treatment. The organic waste liquid after fine filtration was tested, and the test results showed that the pH value was 7.3 and the density was 1.0×10^3kg/m ³ , which met the standard of wastewater discharge.

Example 5

The organic waste liquid treatment method provided in this embodiment includes the following steps

(1) Primary filtration: perform primary filtration on the organic waste liquid with a pH value of 3 to 4 and a density greater than 1.0×10^3kg/m ³ at room temperature, and filter out the suspended solids in the organic waste liquid

(2) Electrolysis: the organic waste liquid is introduced into the electrolytic cell 1, and a strong electrolyte is added to the organic waste liquid. The strong electrolyte contains the flocs produced by the electrolysis reaction, and the organic waste liquid in the electrolytic cell 1 needs to be mixed with the organic waste liquid when adding the electrolyte. Stirring, then in the organic waste liquid in the electrolytic cell 1, a microcurrent of 1 to 3 ampere direct current is passed into the electrolysis, and when the microcurrent electrolyzes the organic waste liquid, calcium-containing compounds are produced in the organic waste liquid, and these calcium-containing compounds and The flocs in the electrolyte cooperate with each other to adsorb the organic matter in the organic waste liquid and precipitate at the bottom of the electrolytic cell 1;

(3) rough filtration: after the precipitation of the organic waste liquid, the flocs produced are deposited on the bottom of the electrolytic cell 1, and the filtrate on the top of the electrolytic cell 1 is filtered out by the filter element 18 at this time, for separating the organic matter in the organic waste liquid;

(4) fine filtration: the waste liquid after the rough filtration in the electrolytic tank 1 is sent to the filter tank 2, and the waste liquid is subjected to final fine filtration through the filter membrane 21 in the filter tank 2 to obtain the waste water that can be discharged up to the standard, and The waste water discharged up to the standard is discharged into the clean water tank for testing to check the treatment results of organic waste liquid.

This embodiment can treat organic waste liquid with higher concentration, and the treatment efficiency is improved by the combination of the two treatment methods. The organic waste liquid after fine filtration is tested, and the test result is that the pH value is 7.0 and the density is 1.0×10^3kg/m ³ , which has reached the standard of clean water and thus the discharge standard of waste water.

As shown in Figures 1 and 2, the organic waste liquid treatment device disclosed in the present invention comprises an electrolytic cell 1 and a filter tank 2 communicated with the electrolytic cell 1. The top of the electrolytic cell 1 is hinged with a sealing cover 16, and the side wall of the upper part of the electrolytic cell 1 There is a waste water feed pipe 11 and a concentration meter 12 connected in parallel on the waste water feed pipe 11, and a micro-electrolyzer 4 is provided in the electrolytic cell 1, and the micro-electrolyzer 4 includes a support frame 41 installed on the electrolytic cell 1. , the telescopic rod 42 installed on the support frame 41 and the electrode sheet group 43 arranged at both ends of the telescopic rod 42, the electrode sheet group 43 is placed in the organic waste liquid, and the telescopic rod 42 is provided with the electrode sheet group 43 The connected spring power line 44, the support frame 41 is provided with an adjustable transformer 45 connected with the spring power line 44, and the concentration meter 12 can be connected with the adjustable transformer 45 through a logic programming controller for automatic control ( Generally, the staff manually adjusts to facilitate the collection of various data), the bottom of the electrolytic cell 1 is provided with a sewage pipe 14, the side wall of the electrolytic cell 1 is processed with an observation window 17, and an electrolyte solution is provided above the electrolytic cell 1 Tank 3, a strong electrolyzer 31 is provided in the electrolyte tank 3, and the bottom of the electrolyte tank 3 is provided with an electrolyte pipe 32 connected to the waste water feed pipe 11 in the rear section of the concentration meter 12, and the waste water feed pipe 11 The outlet end of the electrolytic cell 1 is provided with a mixing turbine 13, the side wall of the electrolytic cell 1 is provided with a drain pipe 15 that communicates with the filter tank 2, and the feed end of the liquid drain pipe 15 in the electrolytic cell 1 is connected with a filter element 18, The drain pipe 15 outside the electrolytic cell 1 is provided with a valve 5 , and the drain pipe 15 between the valve 5 and the filter tank 2 is provided with a blowback pipe 6 , and the filter tank 2 is provided with a multi-layer filter membrane 21 .

The use method one of the organic waste treatment device of the present invention:

The organic waste liquid is fed into the electrolytic cell 1 through the waste water feeding pipe 11, and the concentration meter 12 detects the concentration of the organic waste liquid when the organic waste liquid is conveyed, which is used to provide the staff with the concentration parameters of the organic waste liquid. Adjust the length of the telescopic rod 42 on the micro-electrolyzer 4 according to the concentration parameter of the micro-electrolyzer 4 to ensure that the distance between the electrode sheet groups 43 can be easily micro-electrolyzed to the organic waste liquid. The voltage of the transformer 45 is used to control the voltage and current of the micro-electrolysis, and the calcium-containing compound produced by the electrolysis adsorbs the organic matter in the organic waste liquid, and precipitates the organic matter at the bottom of the electrolytic cell 1, and then filters the waste liquid through the filter element 18, and The filtered waste liquid is introduced into the filter tank 2 through the drain pipe 15 , and the waste liquid is filtered through the filter membrane 21 in the filter tank 2 to obtain the waste water discharged up to the standard.

Use method two of the organic waste treatment device of the present invention:

The organic waste liquid is sent into the electrolytic tank 1 through the waste water feeding pipe 11. Before the organic waste liquid is sent, the reagents in the electrolyte tank 3 are electrolyzed by the strong electrolyzer 31 to obtain an electrolyte containing flocs. At this time, the electrolyte and organic waste liquid are simultaneously sent into the electrolytic cell 1 through the electrolyte pipe 32. At this time, the mixing turbine 13 on the waste water feeding pipe 11 uniformly mixes the organic wastewater and the electrolyte, and then the flocs in the electrolyte are adsorbed. The organic matter in the organic waste water is deposited at the bottom of the electrolytic tank 1, then the waste liquid is filtered through the filter element 18, and the filtered waste liquid is introduced into the filter tank 2 through the drain pipe 15, and the filter membrane in the filter tank 2 is passed. 21 After filtering the waste liquid, the waste water that reaches the standard discharge is obtained.

Use method three of the organic waste treatment device of the present invention:

The organic waste liquid is sent into the electrolytic cell 1 through the waste water feeding pipe 11, and the concentration of the organic waste liquid is detected by the concentration meter 12 during the transmission of the organic waste liquid, which is used to provide the staff with the concentration parameters of the organic waste liquid. The concentration parameter of the liquid adjusts the length of the telescopic rod 42 on the micro-electrolyzer 4 to ensure that the distance between the electrode sheet groups 43 can easily perform micro-electrolysis on the organic waste liquid. The voltage of the transformer 45 is adjusted to control the voltage and current of the micro-electrolysis. Before the organic waste liquid is sent, the reagents in the electrolyte tank 3 are electrolyzed by the strong electrolyzer 31 to obtain an electrolyte containing floccules. When the liquid is conveyed, the electrolyte and organic waste liquid are simultaneously sent into the electrolytic cell 1 through the electrolyte pipe 32. At this time, the mixing turbine 13 on the waste water feeding pipe 11 makes the organic wastewater and the electrolyte evenly mixed, and then the micro-electrolyzer 4 pairs The organic waste water is electrolyzed, so that the organic matter in the organic waste liquid is precipitated at the bottom of the electrolytic tank 1, and then the filter element 18 filters the waste liquid, and the filtered waste liquid is introduced into the filter tank 2 through the drain pipe 15, and passes through the filter tank 2. After the filter membrane 21 filters the waste liquid, the waste water that meets the standard discharge is obtained.

Before filtering through the filter element 18, the staff observes whether the organic waste liquid is layered through the observation window 17. When the filter element 18 is blocked, air or water is blown into the electrolytic cell 1 through the blowback pipe 6 and the drain pipe 15 to blow out the sediment that blocks the filter element 18 .

After the waste liquid is discharged, the precipitated organic matter is discharged through the sewage pipe 14 at the bottom of the electrolytic cell 1 to recover the organic matter and improve the utilization rate of resources.

The above are only the preferred embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any modification and replacement based on the technical solutions and inventive concepts provided by the present invention should be covered by the protection scope of the present invention. Inside.

Claims (6)

1. a method for treating organic waste liquid, is characterized in that comprising the following steps: (1) Preliminary filtration: carry out preliminary filtration to the organic waste liquid for filtering out the suspended matter in the organic waste liquid; (2) Electrolysis: introduce the organic waste liquid after primary filtration into the electrolytic cell, and pass a microcurrent into the organic waste liquid in the electrolytic cell to carry out electrolysis to the organic matter precipitation in the organic waste liquid, or add electrolysis to the organic waste liquid When adding the electrolyte, it is necessary to stir the organic waste liquid and the electrolyte in the electrolytic tank evenly and then let it stand to precipitate the organic matter in the organic waste liquid; (3) rough filtration: the organic waste liquid in the upper part of the electrolyzer after the electrolysis is subjected to rough filtration through the filter element; (4) Fine filtration: the waste liquid after rough filtration is sent to the filter tank, and then discharged into the clean water tank after fine filtration through the filter membrane at the bottom of the filter tank. 2 . The method for treating organic waste liquid according to claim 1 , wherein the value of the microcurrent in the step (1) is 1-3 A. 3 . 3. an organic waste liquid treatment device, it is characterized in that: comprise electrolyzer and the filter tank that communicates with electrolyzer, described electrolyzer top is provided with electrolyte tank, and the side wall of electrolyzer top is provided with waste water feed pipe And the concentration meter connected in parallel on the waste water feeding pipe, the electrolyzer is provided with a micro-electrolyzer, and the micro-electrolyzer includes a support frame installed on the electrolysis cell, a telescopic rod installed on the support frame, and two sets on the telescopic rod. The electrode sheet group is placed in the organic waste liquid, the telescopic rod is provided with a spring power cord connected to the electrode sheet group, and the support frame is provided with an adjustable transformer connected with the spring power cord , the bottom of the electrolytic cell is provided with a sewage pipe, the side wall of the electrolytic cell is provided with a liquid drain pipe that communicates with the filter tank, the feeding end of the liquid drain pipe in the electrolytic cell is connected with a filter element, and the discharge pipe outside the electrolytic cell is connected with a filter element. A valve is arranged on the liquid pipe, a backflushing pipe is arranged on the drain pipe between the valve and the filter tank, and a multi-layer filter membrane is arranged in the filter tank. 4. The organic waste liquid treatment device according to claim 3, characterized in that: the electrolyte tank is provided with a strong electrolyzer, and the electrolyte tank bottom is provided with an electrolysis device connected to the waste water feed pipe in the rear section of the concentration meter. A liquid pipe, the outlet end of the waste water feeding pipe is provided with a mixing turbine. 5 . The organic waste liquid treatment device according to claim 3 , wherein a sealing cover is hinged on the top of the electrolytic cell. 6 . 6 . The organic waste liquid treatment device according to claim 3 , wherein an observation window is processed on the side wall of the electrolytic cell. 7 .