CN108623041B - Movable water treatment system for drilling wastewater - Google Patents
Movable water treatment system for drilling wastewater Download PDFInfo
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- CN108623041B CN108623041B CN201810476606.0A CN201810476606A CN108623041B CN 108623041 B CN108623041 B CN 108623041B CN 201810476606 A CN201810476606 A CN 201810476606A CN 108623041 B CN108623041 B CN 108623041B
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a mobile water treatment system for well drilling wastewater, which is arranged in a container and comprises two rooms, namely a wastewater treatment room and an automatic control instrument room, wherein the two rooms are respectively provided with an independent door and window; a water inlet pump, a main reactor, a dosing machine, a motor and other main equipment are arranged in the wastewater treatment room; auxiliary equipment such as an automatic control cabinet, a monitoring instrument and the like are arranged between the automatic control instruments. Wherein, the main reactor includes: waste residue buffer, preliminary sedimentation district, first deoiling district, collision sedimentation district, second deoiling district, add medicine stirring sedimentation district, first adsorption zone and second adsorption zone. The mobile water treatment system and the equipment provided by the invention integrate the functions of gravity oil removal, dosing coagulation precipitation, filtration and adsorption, have the advantages of simple process, particularly high integration degree, small occupied area and high automation degree, greatly reduce the investment and operation cost of the sewage treatment system, and have the characteristics of strong mobility, good treatment effect, simplicity in preparation, low price and the like.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a mobile water treatment system for drilling wastewater.
Background
The drilling waste water is produced in the process of petroleum, natural gas and geological drilling and well repairing operation, and is composed of drilling fluid, surface water and rainwater. If the waste water is directly discharged without being treated, the waste water can bring great influence on the surrounding ecological environment. The drilling wastewater contains a large amount of silt, oil substances, heavy metal pollutants and various chemical treatment agents, and the water quality index and effluent standard of the typical drilling wastewater are shown in figure 1.
At present, the method for treating the drilling wastewater comprises a physical method, a chemical method, a biological method and the like, and mainly has the following problems:
(1) physical methods, namely a separation method and a interception method, are one of the common methods for treating the drilling wastewater, but because a certain amount of emulsified oil exists in the drilling wastewater, the particle size of the emulsified oil is usually between 0.1 and 3 mu m, the emulsified oil is difficult to treat by using the traditional separation method, a large amount of coagulant is required to be added, and the economic burden of enterprises is greatly increased. If the membrane separation method is adopted, a better treatment effect can be obtained, but the membrane is extremely easy to be polluted, and the regeneration and the reutilization of the membrane can also increase the burden of manpower and material resources of enterprises.
(2) The coagulation method is a common effective chemical method for treating drilling wastewater, but because the drilling wastewater has complex water quality, one or a class of flocculant is rarely used independently, the treatment effect is generally achieved by the composite use of a plurality of flocculants, and the plurality of flocculants mean a plurality of sets of adding equipment and workers with abundant experience, so that additional economic burden is added to enterprises, and in addition, the coagulation method has limited capacity for removing pollutants dissolved in water and can meet the requirement of wastewater discharge by further treatment.
(3) The oxidation method is the research direction of the current drilling wastewater, has a good treatment effect, but has certain limitation on the practical application because the cost of the oxidant is generally high, the reaction equipment is relatively complex, and the generation of byproducts is difficult to dispose.
(4) In the biochemical method, the drilling wastewater has complex and various water quality compositions, and the pollutant compositions are usually drill cuttings, clay, oils, drilling fluid additives, inorganic salts and heavy metals, wherein the inorganic matter content is high, and the stability and biodegradability are poor, so that the stable and standard effluent quality is difficult to ensure by biological treatment or a single treatment method.
(5) In addition, the drilling wastewater is highly dispersed, short in period, high in fluidity and discontinuous in discharge, and the water quality composition of the drilling wastewater is complex and diverse due to differences of drilling modes, processes and geology. Therefore, the treatment of the drilling wastewater requires a process or equipment with a very high degree of equipment and self-control, and no process can meet the requirements at present.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a mobile water treatment system for drilling wastewater, which has the following specific technical scheme:
a movable water treatment system for well drilling wastewater is characterized in that an automatic control instrument room and a wastewater treatment room are arranged in a container;
the automatic control instrument room and the wastewater treatment room are respectively provided with an automatic control instrument room window, an automatic control instrument room door, a wastewater treatment room window and a wastewater treatment room door;
an automatic control box and a monitoring instrument are arranged between the automatic control instruments;
the wastewater treatment room is provided with a main reactor, a movable self-suction sludge pump, a dosing machine, a motor and a standby motor;
the main reactor is internally provided with a waste residue temporary storage area, a pre-settling area, a first oil removing area, a collision settling area, a second oil removing area, a dosing stirring settling area, a first adsorption area and a second adsorption area;
further, the main reactor comprises the following parts: the device comprises an overflow port, a sludge suction pump, a waste residue discharge pipe, a sludge discharge perforated pipe, a flow guide pipe, a bell mouth, a first deoiling area lower baffle plate a, a first floater degreaser, a first deoiling area upper baffle plate a, collision settling area filler, a second deoiling area lower baffle plate b, a second floater degreaser, a second deoiling area upper baffle plate b, a double-layer stirrer, a third floater degreaser, a partition plate a, first adsorption area filler, a partition plate b, second adsorption area filler, a water outlet pipe and a water outlet tank.
Furthermore, a water outlet of the movable self-suction sludge pump is connected with a water inlet hose, the water inlet hose is connected with a flow guide pipe and enters the main reactor, the flow guide pipe is provided with a bell mouth, a sludge discharge perforated pipe is connected with a sludge suction pump, the sludge suction pump is placed in a waste residue temporary storage area, and a waste residue discharge pipe is connected in the waste residue temporary storage area;
when the system is operated, the mobile self-priming sludge pump is placed in a temporary wastewater storage tank on site, wastewater enters a water inlet of the mobile self-priming sludge pump, is lifted by the mobile self-priming sludge pump, and enters the main reactor after passing through a water inlet hose;
the flow velocity of the water inlet hose is 0.9-1.1 m/s;
the dosing pipe is connected with a dosing machine and is inserted in the main reactor;
the lower baffle plate a and the upper baffle plate a are arranged into a first oil removing area, and a first floater oil remover is arranged in the first oil removing area;
the upper baffle plate a and the lower baffle plate b are arranged into a collision sedimentation area, and collision sedimentation area filler is arranged in the collision sedimentation area;
a second oil removing area is arranged in the upper baffle b and the lower baffle b, and a second floater oil remover is arranged in the second oil removing area;
the dosing stirring and precipitating area is uniformly provided with three areas, and each area is provided with a double-layer stirrer;
the partition plates a and b are arranged into a first adsorption area, and a third floater oil remover and first adsorption area filler are arranged in the first adsorption area;
the partition board b and the dosing machine enclose a second adsorption area, a second adsorption area filler and a water outlet groove are arranged in the second adsorption area, and the water outlet groove is connected with a water outlet pipe.
The mobile water treatment system for the well drilling wastewater has the preferred proposal that the size of the wastewater treatment room is 9800 gamma 2130mm, and the height is 2720 mm;
the size of the automatic control instrument room is 9800 gamma 2130mm, and the height of the automatic control instrument room is 2720 mm;
the waste residue temporary storage area is 1500 gamma 720mm in size and 2050mm in height, and a sludge suction pump is arranged in the waste residue temporary storage area;
the size of the pre-settling area is 1500mm, the height of the pre-settling area is 2050mm, and the pre-settling area is used for removing oil pollutants with the diameter larger than 100 mu m and silt in water; the oil pollutants float upwards and pass through a lower baffle a, and enter a first oil removal area together with the wastewater; the hydraulic retention time of the pre-settling area is 9.5-10 h;
the first oil removing area is 1500mm in size and 2050mm in height, and oil pollutants with the diameter larger than 100 mu m are directly removed;
the collision settling zone is internally provided with collision settling zone fillers with the size of 1500mm and the height of 2050mm, and has the function of forming large-particle oil stains by collision of oil pollutants with the fillers and the diameter of 40-100 mu m by arranging the oleophobic fillers, and then removing the large-particle oil stains in a second oil removal zone;
the size of the second oil removing area is 1500mm, the height of the second oil removing area is 2050mm, and large-particle oil pollutants formed after the oil pollutants with the diameter of 40-100 mu m collide are directly removed;
the dosing stirring and precipitating area is divided into three areas, the size of each area is 500 gamma 500mm, the height of each area is 2050mm, the double-layer stirrer is arranged in each area, the double-layer stirrer operates intermittently, namely the dosing stirring is carried out for 30min while dosing is carried out, and then precipitation is carried out for 30 min; the function is that after the medicine is added, the deposition formed by the oil pollutants with the diameter less than 40 mu m and partial heavy metal ions is removed;
the first adsorption area is provided with a size of 860 mm and a height of 2050mm, and is used for removing oil pollutants with diameters less than 40 mu m and removing most heavy metal ions through adsorption;
the second adsorption region has a size of 620 gamma 1500mm and a height of 2050mm, and is used for removing the chroma of the residual heavy metal ions through adsorption.
The preferable scheme of the mobile water treatment system for the drilling wastewater is that a normally closed valve is arranged on the waste residue discharge pipe, a sludge concentration monitoring instrument is arranged in the waste residue temporary storage area, a signal is returned to an automatic control system, and when the design data is reached, the automatic control system gives an alarm and can artificially discharge the waste residue in the waste residue temporary storage area;
the flow velocity of the flow guide pipe is 0.6 m/s;
the maximum diameter of the bell mouth is 1.5 to 2 times of the diameter of the guide pipe;
the height of the lower baffle plate a is 1550 mm;
the installation height of the first floater oil remover is 1950 mm;
the height of the upper baffle plate a from the bottom surface is 500 mm;
the collision settling zone filler is respectively a fiber layer, a pebble layer and a stainless steel mesh supporting layer from top to bottom.
The preferable scheme of the mobile water treatment system for the drilling wastewater is that the fiber layer adopts a PTT fiber textile interception layer, which is an interception material mainly adopting PTT fibers as raw materials, and the preparation process is as follows:
(1) selecting raw materials: selecting a PTT fiber material, wherein the breaking strength is more than or equal to 3.0cN, the breaking strength is more than or equal to 1.8cN/dT, and the elongation at break is more than or equal to 15%;
(2) weaving the raw materials into a fiber mesh, wherein the mesh size is 1-2 mm;
(3) material modification: soaking in deionized water for 12 hours; ② drying for 20min at 120 ℃; soaking in modifier for 60 min; baking at 190-200 ℃ for 10 min; drying at 100-120 deg.c for 20 min;
the washing mode is a reverse flow washing mode, the washing frequency is 1-2 times/day, and the washing time is 20 min; the flushing water pressure has a high level of 30-40 m.
The mobile water treatment system for the drilling wastewater has the preferred scheme that the raw material modifier comprises the following components in percentage by weight in water: 25-30% of fluorine-containing alkyl acrylate, 15-20% of acetone, 5-10% of melamine resin, 10-15% of glyoxal resin and 2-3% of catalyst.
The mobile water treatment system for the well drilling wastewater has the preferred scheme that the height of the lower baffle b is 1400 mm;
the installation height of the second floater oil remover is 1800 mm;
the height of the upper baffle b from the bottom surface is 500 mm;
the stirring diameter of the double-layer stirrer is 350 mm;
the installation height of the third floater oil remover is 1650 mm;
the height of the partition board a is 1300 mm;
the height of the partition board b from the bottom surface is 500 mm.
The preferable scheme of the mobile water treatment system for the drilling wastewater is that the first adsorption region filler is respectively an isolating fiber layer, an adsorbent layer and a stainless steel grid supporting layer from top to bottom;
the isolating fiber layer adopts a PTT fiber textile interception layer, is an interception material mainly adopting PTT fibers as raw materials, and has the following preparation process:
(1) selecting raw materials: selecting a PTT fiber material, wherein the breaking strength is more than or equal to 3.0cN, the breaking strength is more than or equal to 1.8cN/dT, and the elongation at break is more than or equal to 15%;
(2) weaving the raw materials into a fiber mesh, wherein the mesh size is 0.5-1 mm;
(3) material modification: soaking in deionized water for 12 hours; ② drying for 20min at 120 ℃; soaking in modifier for 60 min; baking at 190-200 ℃ for 10 min; drying at 100-120 deg.c for 20 min;
the raw material modifier comprises the following components in percentage by weight in water: 25-30% of fluorine-containing alkyl acrylate, 15-20% of acetone, 5-10% of melamine resin, 10-15% of glyoxal resin and 2-3% of catalyst.
The adsorbent layer adopts lignite with extracellular polymeric substances produced by the soil bacillus attached to the surface, and the preparation process is as follows:
(1) selecting lignite particles with the diameter of 5-8 mm, and washing for 2-3 times by using deionized water;
(2) dissolving the extracellular polymeric substances produced by the agrobacterium tumefaciens into ultrapure water, wherein the concentration is 150mg/L, and soaking lignite particles in the solution for 3-5 days;
the second adsorption area filler is an activated carbon layer and a stainless steel grid support layer from top to bottom respectively;
the activated carbon layer is granular activated carbon with the diameter of 2-5 mm;
the flow velocity of the water outlet pipe is 0.8 m/s;
the drug adding machine and the drug adding pipe are complete equipment, the added drugs are humin and polymeric ferric sulfate, the adding amount is 50-70 mg/L of the humin, and the adding amount of the polymeric ferric sulfate is 25-40 mg/L.
The preferable scheme of the mobile water treatment system for the well drilling wastewater is that when the wastewater is treated, the wastewater flowing way is a mobile self-suction sludge pump, a water inlet hose, a flow guide pipe, a bell mouth, a pre-settling zone, a first oil removal zone, a collision settling zone, a second oil removal zone, a dosing stirring settling zone, a first adsorption zone, a second adsorption zone, a water outlet tank and a water inlet hose.
The invention has the beneficial effects that: (1) the container type is adopted, can move along with a truck, has high mobility and integration degree, is particularly suitable for mine wastewater, can move along with a mine team and is changed to any place for wastewater treatment, has small floor area and high utilization rate, and greatly reduces the investment cost of drilling enterprises for wastewater treatment;
(2) the oil removing effect is good: the oil stain removing device adopts a three-stage oil removing system, wherein the first stage fully utilizes the characteristics of oil pollutants to remove oil stains with larger diameter, the second stage adopts PTT fibers with larger pore size, the oil stains with middle particle size are removed by utilizing the oleophobic property of the PTT fibers and utilizing the collision principle, and the third stage adopts PTT fibers with smaller pore size to separate the oil stains with middle and large particle sizes after chemical dosing, so that the oil stains are removed; the three-stage oil stain removing mechanism makes full use of the functions of buoyancy, collision characteristic, chemical dosing, interception and the like to gradually remove oil stains with different levels of particle sizes and has the characteristics of small dosage and particularly good removing effect;
(3) the heavy metal removal effect is good: according to the invention, heavy metal substances are removed in three stages, a small amount of precipitate formed by adding drugs is taken as the first stage, the precipitate is mainly used for removing partial heavy metal and sulfur ions, lignite with the surface attached with extracellular polymeric substances produced by soil bacillus is taken as the second stage, most heavy metal substances are absorbed and removed, and lignite is a common adsorbent, but the extracellular polymeric substances produced by the soil bacillus has good heavy metal adsorption property, so that the adsorption effect of the lignite is greatly improved, and the remaining heavy metal and chromaticity can be absorbed and removed by using an activated carbon adsorbent in the third stage, therefore, the heavy metal removal effect is good, the dosage is small, and the operating cost is low;
(4) the process is simple: the invention is an integrated device, adopts a physical and chemical method, has lower treatment price than an oxidation method, saves the dosage compared with a traditional coagulating sedimentation method, is easy to control and start and stop compared with a biological method, is particularly suitable for drilling wastewater generated by small and scattered drilling enterprises, and has the characteristics of convenient movement, quick start and capability of being started and stopped at any time;
(5) the automation program is high; the invention adopts integrated equipment, does not need structures, saves investment and land occupation, is provided with an automatic control system, is controlled by a computer completely, does not need manpower, and greatly reduces the operation cost of enterprises.
Therefore, the structure has remarkable economic benefit.
Drawings
FIG. 1 is a diagram showing water quality indexes of inlet and outlet water of typical drilling wastewater;
FIG. 2 is a schematic plan view of the mobile water treatment system and apparatus;
FIG. 3 is a schematic sectional view of a mobile water treatment system and an apparatus.
In the figure, 1-a wastewater treatment room 2-an automatic control instrument room 3-a waste residue temporary storage area 4-a pre-settling area 5-a first deoiling area 6-a collision settling area 7-a second deoiling area 8-a dosing stirring settling area 9-a first adsorption area 10-a second adsorption area 11-a main reactor 12-a mobile self-suction sludge pump 13-a water inlet hose 14-an overflow port 15-a sludge suction pump 16-a waste residue discharge pipe 17-a sludge discharge perforated pipe 18-a draft pipe 19-a bell mouth 20-a first deoiling area lower baffle a 21-a first floater oil remover 22-a first deoiling area upper baffle a 23-a collision settling area filler 24-a second deoiling area lower baffle b 25-a second floater oil remover 26-a second deoiling area upper baffle b 27- The double-layer stirrer 28, the third floater oil remover 29, the partition plate a 30, the first adsorption area filler 31, the partition plate b 32, the second adsorption area filler 33, the water outlet pipe 34, the water outlet groove 35, the dosing machine 36, the dosing pipe 37, the motor 38, the standby motor 39, the automatic control box 40, the automatic control instrument room window 41, the wastewater treatment room window 42, the wastewater treatment room door 43, the automatic control instrument room door 44 and the container.
Detailed Description
2-3, a mobile water treatment system for well drilling wastewater, which comprises a container 44, a self-control instrument room 2 and a wastewater treatment room 1 arranged in the container;
the automatic control instrument room 2 and the wastewater treatment room 1 are respectively provided with an automatic control instrument room window 40, an automatic control instrument room door 43, a wastewater treatment room window 41 and a wastewater treatment room door 42;
the wastewater treatment room 1 is provided with a main reactor 11, a movable self-suction sludge pump 12, a dosing machine 35, a motor 37 and a standby motor 38;
the main reactor 11 is internally provided with a waste residue temporary storage area 3, a pre-settling area 4, a first oil removing area 5, a collision settling area 6, a second oil removing area 7, a dosing stirring and settling area 8, a first adsorption area 9 and a second adsorption area 10;
the automatic control instrument room 2 is provided with an automatic control box 39 and a monitoring instrument;
the water outlet of the mobile self-suction sludge pump 12 is connected with a water inlet hose 13, the water inlet hose 13 is connected with a guide pipe 18 and enters the main reactor 11, the guide pipe 18 is provided with a bell mouth 19, a sludge discharge perforated pipe 17 is connected with a sludge suction pump 15, the sludge suction pump 15 is placed in the waste residue temporary storage area 3, and a waste residue discharge pipe 16 is connected in the waste residue temporary storage area 3;
when the system is operated, the mobile self-suction sludge pump 12 is placed in a temporary wastewater storage tank on site, wastewater enters a water inlet of the mobile self-suction sludge pump 12, is lifted by the mobile self-suction sludge pump 12, and enters the main reactor 11 after passing through a water inlet hose 13;
the flow speed of the water inlet hose 13 is 0.9-1.1 m/s;
the dosing pipe 36 is connected with a dosing machine 35 and is inserted in the main reaction 11;
the lower baffle a20 and the upper baffle a22 are arranged as a first oil removing area 5, and a first floater oil remover 21 is arranged in the first oil removing area 5;
the upper baffle plate a22 and the lower baffle plate b24 are arranged as a collision settling zone 6, and collision settling zone fillers 23 are arranged in the collision settling zone 6;
a second oil removing area 7 is arranged in the upper baffle b26 and the lower baffle b24, and a second floater oil remover 25 is arranged in the second oil removing area 7;
the dosing stirring and precipitating zone 8 is uniformly provided with three zones, and each zone is provided with a double-layer stirrer;
the partition plate a29 and the partition plate b31 are arranged as a first adsorption zone 9, and a third floater oil remover 28 and a first adsorption zone filler 30 are arranged in the first adsorption zone 9;
the partition board b31 and the dosing machine 35 enclose a second adsorption area 10, a second adsorption area filler 32 and a water outlet groove 34 are arranged in the second adsorption area 10, and the water outlet groove 34 is connected with the water outlet pipe 33.
The size of the waste water treatment chamber 1 is 9800 gamma 2130mm, and the height of the waste water treatment chamber is 2720 mm;
the size of the automatic control instrument room 2 is 9800 gamma 2130mm, and the height is 2720 mm;
the waste residue temporary storage area 3 is 1500 gamma 720mm in size and 2050mm in height, and a sludge suction pump is arranged inside the waste residue temporary storage area;
the size of the pre-settling area 4 is 1500mm, the height of the pre-settling area is 2050mm, and the pre-settling area is used for removing oil pollutants with the diameter larger than 100 mu m and silt in water; the oil pollutants float upwards and pass through a lower baffle plate a, and enter a first oil removing area 5 together with the wastewater; the hydraulic retention time of the pre-settling zone 4 is 9.5-10 h;
the first oil removing area 5 is 1500mm in size and 2050mm in height and directly removes oil pollutants with the diameter of more than 100 mu m;
the collision settling zone 6 is 1500mm in size and 2050mm in height, and is internally provided with collision settling zone filler 23 which has the function of forming large-particle oil stains by collision of oil pollutants with the filler and the diameter of 40-100 mu m by arranging the oleophobic filler, and then the large-particle oil stains enter the second oil removal zone 7 to be removed;
the size of the second oil removing area 7 is 1500mm at 500 x, the height is 2050mm, and large-particle oil pollutants formed after the oil pollutants with the diameter of 40-100 mu m collide are directly removed;
the dosing, stirring and precipitating area 8 is divided into three areas, the size of each area is 500 gamma 500mm, the height of each area is 2050mm, the double-layer stirrer is arranged in each area, the double-layer stirrer operates intermittently, namely the dosing and stirring are carried out for 30min at the same time, and then precipitation is carried out for 30 min; the function is that after the medicine is added, the deposition formed by the oil pollutants with the diameter less than 40 mu m and partial heavy metal ions is removed;
the first adsorption area 9 has a size of 860 mm and a height of 2050mm, and is used for removing oil pollutants with a diameter of less than 40 μm and removing most heavy metal ions through adsorption;
the second adsorption region 10 has a size of 620 gamma 1500mm and a height of 2050mm, and functions to remove the chromaticity of the remaining heavy metal ions by adsorption.
A normally closed valve is arranged on the waste residue discharge pipe 16, a sludge concentration monitoring instrument is arranged in the waste residue temporary storage area 3, a signal is returned to an automatic control system, when design data are reached, the automatic control system gives an alarm, and waste residues in the waste residue temporary storage area can be discharged manually;
the flow velocity of the draft tube 18 is 0.6 m/s;
the maximum diameter of the bell mouth 19 is 1.5 to 2 times of the diameter of the guide pipe;
the height of the lower baffle plate a20 is 1550 mm;
the installation height of the first floater oil remover 21 is 1950 mm;
the height of the upper baffle plate a22 from the bottom surface is 500 mm;
the collision settling zone filler 23 is a fiber layer, a pebble layer and a stainless steel mesh support layer from top to bottom.
The fiber layer adopts a PTT fiber textile interception layer, is an interception material mainly adopting PTT fibers as raw materials, and has the following preparation process:
(1) selecting raw materials: selecting PTT fiber material, and requiring breaking strength not less than 3.0cN, breaking strength not less than 1.8cN/dT, and breaking elongation not less than 15%.
(2) The raw material is woven into a fiber mesh shape, and the mesh size is 1-2 mm.
(3) Material modification: soaking in deionized water for 12 hours; ② drying for 20min at 120 ℃; soaking in modifier for 60 min; baking at 190-200 ℃ for 10 min; and drying at 100-120 ℃ for 20 min.
The washing mode is a reverse flow washing mode, the washing frequency is 1-2 times/day, and the washing time is 20 min; the flushing water pressure has a high level of 30-40 m.
The raw material modifier comprises the following components in percentage by weight in water: 25-30% of fluorine-containing alkyl acrylate, 15-20% of acetone, 5-10% of melamine resin, 10-15% of glyoxal resin and 2-3% of catalyst.
The height of the lower baffle plate b24 is 1400 mm;
the installation height of the second floater degreaser 25 is 1800 mm;
the height of the upper baffle b26 from the bottom surface is 500 mm;
the stirring diameter of the double-layer stirrer is 350 mm;
the installation height of the third floater degreaser 28 is 1650 mm;
the height of the partition board a29 is 1300 mm;
the height of the partition b31 from the bottom surface is 500 mm.
The first adsorption area filler 30 is composed of an isolation fiber layer, an adsorbent layer and a stainless steel grid support layer from top to bottom;
the isolating fiber layer adopts a PTT fiber textile interception layer, is an interception material mainly adopting PTT fibers as raw materials, and has the following preparation process:
(1) selecting raw materials: selecting PTT fiber material, and requiring breaking strength not less than 3.0cN, breaking strength not less than 1.8cN/dT, and breaking elongation not less than 15%.
(2) The raw material is woven into a fiber mesh, and the mesh size is 0.5-1 mm.
(3) Material modification: soaking in deionized water for 12 hours; ② drying for 20min at 120 ℃; soaking in modifier for 60 min; baking at 190-200 ℃ for 10 min; drying at 100-120 deg.c for 20 min;
the raw material modifier comprises the following components in percentage by weight in water: 25-30% of fluorine-containing alkyl acrylate, 15-20% of acetone, 5-10% of melamine resin, 10-15% of glyoxal resin and 2-3% of catalyst;
the adsorbent layer adopts lignite with extracellular polymeric substances produced by the soil bacillus attached to the surface, and the preparation process is as follows:
(1) selecting lignite particles with the diameter of 5-8 mm, and washing for 2-3 times by using deionized water;
(2) dissolving the extracellular polymeric substances produced by the agrobacterium tumefaciens into ultrapure water, wherein the concentration is 150mg/L, and soaking lignite particles in the solution for 3-5 days;
the second adsorption area filler 32 is an activated carbon layer and a stainless steel grid support layer from top to bottom respectively;
the activated carbon layer is granular activated carbon with the diameter of 2-5 mm;
the flow speed of the water outlet pipe 33 is 0.8 m/s;
the dosing machine 35 and the dosing pipe 36 are complete equipment, the dosing agents are humins and polymeric ferric sulfate, the dosing amount is 50-70 mg/L of the humins, and the polymeric ferric sulfate is 25-40 mg/L.
When the wastewater is treated, the wastewater flows through a movable self-priming sludge pump 12, a water inlet hose 13, a draft tube 18, a bell mouth 19, a pre-settling zone 4, a first oil removal zone 5, a collision settling zone 6, a second oil removal zone 7, a drug adding stirring settling zone 8, a first adsorption zone 9, a second adsorption zone 10, a water outlet tank 34 and a water inlet hose 13.
Claims (5)
1. A mobile water treatment system for drilling wastewater, characterized by: an automatic control instrument room and a wastewater treatment room are arranged in the container;
an automatic control box and a monitoring instrument are arranged between the automatic control instruments;
the wastewater treatment room is provided with a main reactor, a movable self-suction sludge pump, a dosing machine, a motor and a standby motor;
the main reactor is internally provided with a waste residue temporary storage area, a pre-settling area, a first oil removing area, a collision settling area, a second oil removing area, a dosing stirring settling area, a first adsorption area and a second adsorption area;
the main reactor comprises the following parts: the device comprises an overflow port, a sludge suction pump, a waste residue discharge pipe, a sludge discharge perforated pipe, a flow guide pipe, a bell mouth, a first deoiling area lower baffle plate a, a first floater degreaser, a first deoiling area upper baffle plate a, collision settling area filler, a second deoiling area lower baffle plate b, a second floater degreaser, a second deoiling area upper baffle plate b, a double-layer stirrer, a third floater degreaser, a partition plate a, first adsorption area filler, a partition plate b, second adsorption area filler, a water outlet pipe and a water outlet tank;
the connection relationship of each part is that the water outlet of the mobile self-suction sludge pump is connected with a water inlet hose, the water inlet hose is connected with a flow guide pipe to enter the main reactor, the flow guide pipe is provided with a bell mouth, a sludge discharge perforated pipe is connected with a sludge suction pump, the sludge suction pump is placed in a waste residue temporary storage area, and a waste residue discharge pipe is connected in the waste residue temporary storage area;
the slag discharging mode is that a normally closed valve is installed on the waste slag discharging pipe, a sludge concentration monitoring instrument is installed in the waste slag temporary storage area, signals are returned to the automatic control system, when the design data are reached, the automatic control system gives an alarm, and waste slag in the waste slag temporary storage area can be discharged manually;
the dosing pipe is connected with a dosing machine and is inserted in the main reactor;
the lower baffle plate a and the upper baffle plate a are arranged into a first oil removing area, and a first floater oil remover is arranged in the first oil removing area;
the upper baffle plate a and the lower baffle plate b are arranged into a collision sedimentation area, and collision sedimentation area filler is arranged in the collision sedimentation area;
a second oil removing area is arranged in the upper baffle b and the lower baffle b, and a second floater oil remover is arranged in the second oil removing area;
the dosing stirring and precipitating area is uniformly provided with three areas, and each area is provided with a double-layer stirrer;
the partition plates a and b are arranged into a first adsorption area, and a third floater oil remover and first adsorption area filler are arranged in the first adsorption area;
a second adsorption area is formed by the partition board b and the dosing machine in an enclosing mode, a second adsorption area filler and a water outlet groove are arranged in the second adsorption area, and the water outlet groove is connected with a water outlet pipe;
when the wastewater is treated, the wastewater flowing path is a movable self-suction sludge pump, a water inlet hose, a flow guide pipe, a bell mouth, a pre-settling zone, a first oil removing zone, a collision settling zone, a second oil removing zone, a drug adding stirring settling zone, a first adsorption zone, a second adsorption zone, a water outlet tank and a water inlet hose.
2. The mobile water treatment system for drilling wastewater of claim 1, wherein:
the flow velocity of the flow guide pipe is 0.6 m/s;
the maximum diameter of the bell mouth is 1.5 to 2 times of the diameter of the guide pipe;
the height of the lower baffle plate a is 1550 mm;
the installation height of the first floater oil remover is 1950 mm;
the height of the upper baffle plate a from the bottom surface is 500 mm;
the height of the lower baffle b is 1400 mm;
the installation height of the second floater oil remover is 1800 mm;
the height of the upper baffle b from the bottom surface is 500 mm;
the stirring diameter of the double-layer stirrer is 350 mm;
the installation height of the third floater oil remover is 1650 mm;
the height of the partition board a is 1300 mm;
the height of the partition board b from the bottom surface is 500 mm;
the collision sedimentation area filler is respectively a fiber layer, a pebble layer and a stainless steel mesh support layer from top to bottom, the washing mode is a reverse flow washing mode, the washing frequency is 1-2 times/day, and the washing time is 20 min; the elevation of the flushing water pressure is 30-40 m;
the second adsorption area filler is an activated carbon layer and a stainless steel grid support layer from top to bottom respectively;
the activated carbon layer is granular activated carbon with the diameter of 2-5 mm;
the flow velocity of the water outlet pipe is 0.8 m/s;
the drug adding machine and the drug adding pipe are complete equipment, the added drugs are humin and polymeric ferric sulfate, the adding amount is 50-70 mg/L of the humin, and the adding amount of the polymeric ferric sulfate is 25-40 mg/L.
3. The mobile water treatment system for drilling wastewater of claim 2, wherein: the fiber layer adopts a PTT fiber textile interception layer, is an interception material mainly adopting PTT fibers as raw materials, and has the following preparation process:
(1) selecting raw materials: selecting a PTT fiber material, wherein the breaking strength is more than or equal to 3.0cN, the breaking strength is more than or equal to 1.8cN/dT, and the elongation at break is more than or equal to 15%;
(2) weaving the raw materials into a fiber mesh, wherein the mesh size is 1-2 mm;
(3) material modification: soaking in deionized water for 12 hours; ② drying for 20min at 120 ℃; soaking in modifier for 60 min; baking at 190-200 ℃ for 10 min; drying at 100-120 deg.c for 20 min;
the raw material modifier comprises the following components in percentage by weight in water: 25-30% of fluorine-containing alkyl acrylate, 15-20% of acetone, 5-10% of melamine resin, 10-15% of glyoxal resin and 2-3% of catalyst.
4. The mobile water treatment system for drilling wastewater of claim 1, wherein: the first adsorption region filler is respectively an isolation fiber layer, an adsorbent layer and a stainless steel grid support layer from top to bottom;
the isolating fiber layer adopts a PTT fiber textile interception layer, is an interception material mainly adopting PTT fibers as raw materials, and has the following preparation process:
(1) selecting raw materials: selecting a PTT fiber material, wherein the breaking strength is more than or equal to 3.0cN, the breaking strength is more than or equal to 1.8cN/dT, and the elongation at break is more than or equal to 15%;
(2) weaving the raw materials into a fiber mesh, wherein the mesh size is 0.5-1 mm;
(3) material modification: soaking in deionized water for 12 hours; ② drying for 20min at 120 ℃; soaking in modifier for 60 min; baking at 190-200 ℃ for 10 min; drying at 100-120 deg.c for 20 min;
the raw material modifier comprises the following components in percentage by weight in water: 25-30% of fluorine-containing alkyl acrylate, 15-20% of acetone, 5-10% of melamine resin, 10-15% of glyoxal resin and 2-3% of catalyst.
5. The mobile water treatment system for drilling wastewater of claim 4, wherein: the adsorbent layer adopts lignite with extracellular polymeric substances produced by the soil bacillus attached to the surface, and the preparation process is as follows:
(1) selecting lignite particles with the diameter of 5-8 mm, and washing for 2-3 times by using deionized water;
(2) dissolving the extracellular polymeric substances of the agrobacterium into ultrapure water with the concentration of 150mg/L, and soaking lignite particles in the solution for 3-5 days.
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| CN112811658B (en) * | 2020-12-29 | 2023-04-07 | 江西挺进环保科技股份有限公司 | Electroplating sewage treatment method |
| CN112794502B (en) * | 2020-12-29 | 2023-04-07 | 江西挺进环保科技股份有限公司 | Electroplating sewage treatment system |
| CN114890585B (en) * | 2022-05-28 | 2023-08-01 | 延安大学 | Continuous treatment device for petroleum and natural gas drilling sewage |
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