CN208250103U - Coalbed methane brine disposal device - Google Patents

Abstract

The utility model discloses a kind of coalbed methane brine disposal devices, including flocculation sedimentation unit, photochemical catalytic oxidation unit, biological activated carbon processing unit, each unit to be sequentially connected with；The flocculation sedimentation unit is equipped with flocculation chemicals dosing plant and helps solidifying chemicals dosing plant；The photochemical catalytic oxidation unit includes one stage catalyzing oxidation unit and second level catalytic oxidizing equipment, is mounted on ultraviolet lamp in the one stage catalyzing oxidation unit and second level catalytic oxidizing equipment.The coalbed methane brine disposal device of the utility model, solve scene using natural evaporation hole to recovered water carry out processing take up a large area, treatment effeciency is low, when encounter water flow on rainy day mountain collect wash away evaporation well cause sewage to leak, the problem of polluting environment, is the optimal selection for solving the problems, such as coal bed gas produced water qualified discharge.

Description

Coalbed methane brine disposal device

Technical field

The utility model relates to water-treatment technology field, in particular to a kind of coalbed methane brine disposal device.

Background technique

Since the formation of bed gas reservoir needs a more stable hydrodynamic condition, what is coexisted with coal bed gas is a large amount of Coal seam water.In order to desorb coal bed gas and flow to shaft bottom, drainage and step-down is first had to.Before coal bed gas production, in general, It draws water from well up to 6 months or more long.When carrying out the production of multiple seam gas, output water can be more.Bed gas reservoir recovered water Main chemical component include bicarbonate, sulfate, chloride, a small amount of organic matter, calcium, magnesium and sodium etc., secondly there are also a small amount of Iron, sulfide etc..During coal-bed gas exploitation, the processing of recovered water is an extremely important problem, and influences to open Adopt a key factor of process, gas production and entire project investment.What the country took mostly at present is evaporation or aeration The coal bed gas produced water of precipitation method processing, takes up a large area, treatment effeciency is low.Live antiseep storage, demand to be treated is very Urgent and amount is very big.

Coal bed gas produced water may contain tiny clay slurry, heavy metal ion, phenols and sulfide, can also contain sometimes There is a small amount of fracturing fluid, therefore the turbidity of wastewater is high, viscosity is big and salinity is high, and contains soluble organic agent, waste water Have the characteristics that highly unstable property, variability, complexity and dispersibility, environment protection standard processing difficulty is big.

Currently, the method that skid-mounted type sewage treatment process mainly uses physical chemistry to combine both at home and abroad.And wastewater treatment In common biochemical method because traditional process equipment and process are relative complex, in a limited space in be difficult to carry out, be commonly used in Fixed sewage treatment.The field condition of coal bed gas field at present, coal bed gas well dispersion, and also the output of each coal bed gas well is useless Water is not very greatly, to produce wastewater flow rate daily about at 100-200 cubic metres.If each well is uneconomical with fixed sewage treatment Be also to waste very much.

Utility model content

In order to solve the problems, such as existing produced water treatment, the utility model embodiment provides a kind of coalbed methane brine disposal Device.The technical solution is as follows:

On the one hand, a kind of coalbed methane brine disposal device, including flocculation sedimentation unit, photochemical catalytic oxidation unit, biology Active carbon processing unit, each unit are sequentially connected with；Flocculation sedimentation unit is equipped with flocculation chemicals dosing plant and helps solidifying chemicals dosing plant；Light Catalytic oxidation unit includes one stage catalyzing oxidation unit and second level catalytic oxidizing equipment, and one stage catalyzing oxidation unit and second level are catalyzed Ultraviolet lamp is mounted in oxidation unit.

Further, multistage inclined tube formula separator is also equipped in flocculation sedimentation unit.

Further, inclined tube is made of alveolate leaning pipe in multistage inclined tube formula separator, 60 ° of inclined tube inclination angle.

Further, setting also Piping Centrifugal Pumps and ozone generator, Piping Centrifugal Pumps will before photochemical catalytic oxidation unit The waste water of flocculation sedimentation unit discharge is discharged into photochemical catalytic oxidation unit.

Further, microbial film is covered in the pore surface of active carbon in biological activated carbon processing unit.

Further, tail gas breaking plant is also respectively arranged in one stage catalyzing oxidation unit and second level catalytic oxidizing equipment.

Technical solution provided by the embodiment of the utility model has the benefit that the coal bed gas produced of the utility model Water treatment facilities, solve scene using natural evaporation hole to recovered water carry out processing take up a large area, treatment effeciency is low, works as chance Water flow, which is collected, on to rainy day mountain washes away the problem of evaporation well causes sewage to leak, pollutes environment, is to solve coal bed gas produced water to reach Mark the optimal selection of emission problem.

Detailed description of the invention

The technical solution in example is applied in order to illustrate more clearly of the utility model, it below will be to required in embodiment description The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.

Fig. 1 is the structural schematic diagram of the coalbed methane brine disposal Installation practice of the utility model.

Specific embodiment

It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer Type embodiment is described in further detail.

Embodiment

As shown in Figure 1, the coalbed methane brine disposal device of the utility model includes: flocculation sedimentation unit 1, photocatalytic-oxidation Change unit 2 and biological activated carbon processing unit 3, each unit is sequentially connected with.

Flocculation sedimentation unit 1 is equipped with flocculation chemicals dosing plant 4 and helps solidifying chemicals dosing plant 5, and continous way processing fortune both can be used Intermittent processing operation can also be used in row, and the method for launching flocculant is wet type throw-in play.After sewage to flocculation sedimentation unit 1, Efficient flocculant, coagulant etc. are added wherein, mixes medicament comprehensively with sewage, accelerates sewage flocculation precipitating, saves Installation cost.

Flocculation sedimentation unit 1 there also is provided multistage inclined tube formula separator 6, and inclined tube is made of alveolate leaning pipe, and inclined tube inclines 60 ° of angle.Sewage is flowed in drainage pipeline upwards by inclined tube bottom, due to good hydraulics, big radial direction rate It can make to fall in the particle on the inner surface of inclined tube with 60 ° of inclination angles of inclined tube and wadding body is deposited under gravity and settles.This is practical Multistage inclined tube formula separator 6 employed in novel is more preferable relative to common inclined-tube sedimentation effect, can greatly improve sedimentation Efficiency.

Flocculation sedimentation unit 1 mainly carries out the processing of suspended matter and heavy metal to waste water, be added into waste water flocculant and Flocculation aid makes suspended matter in water and most colloid macromolecules species precipitate into sludge, and the suspended matter in waste water passes through Precipitation is removed, and improves the light transmission rate of waste water, and photochemical catalytic oxidation unit 2 can be made preferably to play a role.

There are also Piping Centrifugal Pumps 7 and ozone generators 8, Piping Centrifugal Pumps 7 to flocculate for setting before photochemical catalytic oxidation unit 2 The waste water that precipitation unit 1 is discharged is discharged into photochemical catalytic oxidation unit 2, and ozone generator 8 generates ozone and is discharged into photochemical catalytic oxidation unit 2。

Photochemical catalytic oxidation unit 2 includes one stage catalyzing oxidation unit 9 and second level catalytic oxidizing equipment 10.In one stage catalyzing oxygen Makeup, which is set, is mounted on ultraviolet lamp 11 in 9 and second level catalytic oxidizing equipment 10, device is respectively arranged with tail gas breaking plant 12, and bottom is equal Air aeration device 13 is installed.

The main COD in processing waste water of photochemical catalytic oxidation unit 2, in the water for being mixed with ozone, using ultraviolet light, Photocatalysis oxidation reaction occurs for the mixture of ultraviolet light and ozone and water, the extremely strong hydroxyl radical free radical of oxidisability is generated, to waste water In organic matter difficult to degrade carry out oxidation removal.

Photochemical catalytic oxidation unit 2 converts hardly degraded organic substance present in waste water to soluble small organic molecule, Further oxidation removal improves the biodegradability of waste water, improves capacity of resisting impact load.It is combined using ultraviolet light and ozone, it can Ozone usage amount more than subtracting 30%, had not only enhanced the oxidability of oxidant, but also saved the dosage of ozone, realized energy conservation With efficiently lay equal stress on, while can also prevent excessive ozone from causing damages to environment.Air aeration device 13 can make ozone and dirt Water is sufficiently mixed, and extra ozone discharges after the processing of tail gas breaking plant 12, not can cause environmental pollution.

The content of Organic substance in water reduces after one stage catalyzing 9 pre-processing of oxidation unit, in photochemical catalytic oxidation unit 2 It is that one stage catalyzing 9 bottom of pond of oxidation unit installs air exposure that 10 bottom of pond of second level catalytic oxidizing equipment, which installs 13 quantity of air aeration device, The half of 13 quantity of device of air, with energy saving.

Biological activated carbon processing unit 3 mainly removal coloration and absorbed portion COD difficult to degrade, after prime is degraded not by The COD of oxidation removal is removed in this level-one by the effect of the suction-operated of microorganism own metabolism and active carbon, to subsequent depth Degree processing plays a protective role.

This unit uses BAC Technology, using the porous structure of active carbon, covers in the pore surface of active carbon Microbial film.The suction-operated of the catharsis of microorganism and active carbon is incorporated into one, when waste water water COD high, micro- life Object and active carbon adsorb the COD in water simultaneously, quickly reduce COD concentration；When come Water l oad it is low when, microorganism can use work Property charcoal is in the COD for adsorb when Water l oad is high as nutriment source.This design improves biological activated carbon to carrying out Water l oad Impact resistance, while the vital action of microorganism is utilized the small organic molecule of activated carbon adsorption again, oxygenolysis it is same When regenerated to active carbon, extend the adsorption saturation time of active carbon, reduce active carbon replacement frequency, reduce operation Cost；Microorganism can also be made to reduce the yield of activated sludge to the absorption complete decomposition of COD simultaneously.

The coalbed methane brine disposal device of the utility model can also configure independent full-automatic control system system, Setting online monitoring instruments in treatment process select work by the automatic switchover of pipeline valve according to the water quality that monitoring obtains Processing unit in skill, such as: when water water quality is not required to removal COD, waste water only enters flocculation sedimentation unit 1 and is handled, Suspended matter is handled into rear direct emission up to standard, does not enter back into subsequent photochemical catalytic oxidation unit 2 and biological activated carbon processing unit 3；When water water-quality COD superscale is less than 10mg/L, ozone generator 8 does not work, and ultraviolet lamp 11 does not work, and sky is used only Gas aerator 13 is aerated to the reaction tank of photochemical catalytic oxidation unit 2, reduces the removal of progress suspended matter after COD, heel row up to standard It puts；When water water-quality COD superscale is greater than 10mg/L, system is all run, and is discharged after standard water discharge, is back to if it does not meet the standards System inlets are handled again.Unnecessary unit is skipped when water water quality is excellent in this way, saves energy consumption, reduces running cost With.

The coalbed methane brine disposal device of the utility model is by flocculant mixed flocculation, shallow-layer coagulative precipitation device, UV+ O₃Catalytic oxidizing equipment and BAC Technology are applied simultaneously, and each processing unit is attained by expected treatment effect, preceding The flocculation sedimentation unit 1 of section mainly removes the auxiliary agent of oil removal, various additions, surfactant and part COD；The light in middle section is urged Change oxidation unit 2 mainly removal COD, bacterium etc.；The biological activated carbon processing unit 3 of back segment mainly removes hardly degraded organic substance, Suspended matter, coloration etc., it is ensured that technique qualified discharge.

The coalbed methane brine disposal device of the utility model optimizes coalbed methane brine disposal process, makes effluent quality Reach coal bed gas well location discharge standard and other discharge index emission requests, system flow is energy-efficient, realizes one Change a multistage and device multi-energy requirement.Solve scene using natural evaporation hole to recovered water carry out processing take up a large area, handle Low efficiency, when encounter water flow on rainy day mountain collect wash away evaporation well cause sewage to leak, pollute environment the problem of.It is that collection is multi-functional Integrated coalbed methane brine disposal equipment, from construction period, use and way to manage, construction cost, operating cost and makes Comprehensively considered and evaluated with various aspects such as effects, is the ideal chose in current coalbed methane brine disposal equipment.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (6)

1. coalbed methane brine disposal device, which is characterized in that living including flocculation sedimentation unit, photochemical catalytic oxidation unit, biology Property charcoal processing unit, each unit are sequentially connected with；The flocculation sedimentation unit is equipped with flocculation chemicals dosing plant and helps solidifying chemicals dosing plant； The photochemical catalytic oxidation unit includes one stage catalyzing oxidation unit and second level catalytic oxidizing equipment, the one stage catalyzing oxidation unit Ultraviolet lamp is mounted on in second level catalytic oxidizing equipment.

2. coalbed methane brine disposal device as described in claim 1, which is characterized in that also pacify in the flocculation sedimentation unit Equipped with multistage inclined tube formula separator.

3. coalbed methane brine disposal device as claimed in claim 2, which is characterized in that the multistage inclined tube formula separator Middle inclined tube is made of alveolate leaning pipe, 60 ° of inclined tube inclination angle.

4. coalbed methane brine disposal device as claimed in claim 3, which is characterized in that set before the photochemical catalytic oxidation unit It sets there are also Piping Centrifugal Pumps and ozone generator, the waste water that flocculation sedimentation unit is discharged is discharged into the light by the Piping Centrifugal Pumps Catalytic oxidation unit.

5. coalbed methane brine disposal device as claimed in claim 4, which is characterized in that the biological activated carbon processing unit In active carbon pore surface cover microbial film.

6. coalbed methane brine disposal device as claimed in claim 5, which is characterized in that the one stage catalyzing oxidation unit and Tail gas breaking plant is also respectively arranged in second level catalytic oxidizing equipment.