Movable skid-mounted mine water treatment system

Abstract

The utility model discloses a movable skid-mounted mine water treatment system which comprises a skid-mounted magnetic separation device, a skid-mounted tubular micro-filtration membrane device, a middle water tank I, a skid-mounted primary reverse osmosis device, a middle water tank II, a skid-mounted secondary reverse osmosis device and a water production tank which are connected in sequence, sludge outlets of the skid-mounted magnetic separation device and the skid-mounted tubular micro-filtration membrane device are connected with the skid-mounted sludge concentration device, the skid-mounted dosing device is used for dosing the whole process, and the skid-mounted chemical cleaning device is connected with the skid-mounted primary reverse osmosis device and the skid-mounted secondary reverse osmosis device. The device adopts a short-process treatment mode, two-stage ultrafiltration and filtering units are omitted, and the cost is reduced; functional equipment of the whole system adopts a skid-mounted mode, installation is easy and convenient, the occupied area is reduced, and maintenance and transportation are convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wastewater treatment, and particularly relates to a mobile skid-mounted mine water treatment system. BACKGROUND

[0002] In recent years, mine water with high mineralization and special components has increased year by year, and relevant water quality standards have been greatly improved, which puts forward higher requirements for coal mine water treatment. In order to adapt to the new situation, coal mine water treatment technology should realize large-scale low-cost treatment of mine water through technological innovation, and support efficient utilization of mine water.

[0003] The existing mine water treatment system mainly includes coagulation sedimentation, filtration, adsorption, membrane separation equipment, and conventional coal mine high-suspended matter and high-salt mine water adopts a plant mode for construction, and the structure process of the process system is mostly pretreatment + filtration + primary ultrafiltration + primary reverse osmosis + hardening removal system + secondary ultrafiltration + secondary reverse osmosis. The defects of the above coal mine water treatment system are that the treatment process is too long and the cost is high. Secondly, the traditional mine water treatment system needs to build a plant, the whole system occupies a large area, the investment and operation and maintenance cost is high, and the flexibility is poor. UTILITARIAN CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a mobile skid-mounted mine water treatment system, which can realize short-process treatment of mine wastewater, low cost, and is beneficial to factory prefabrication, assembly, shortens the construction period, reduces pipelines and plant facilities, reduces the land occupation area, and reduces the engineering investment.

[0005] In order to achieve the above-mentioned purposes, the technical scheme adopted by the utility model is as follows:

[0006] A mobile skid-mounted mine water treatment system, which comprises a skid-mounted magnetic separation device, a skid-mounted tubular microfiltration membrane device, a skid-mounted primary reverse osmosis device, a skid-mounted secondary reverse osmosis device, a skid-mounted sludge concentration device, a skid-mounted sludge treatment device, a skid-mounted dosing device, a skid-mounted chemical cleaning device, an intermediate water tank I, an intermediate water tank II, a water production tank, and a concentrated water tank.

[0007] The skid-mounted magnetic separation device is provided with a sewage inlet, the water outlet of the skid-mounted magnetic separation device is connected with the inlet of the skid-mounted tubular micro-filtration membrane device through a lifting pump I, the sludge outlet of the skid-mounted magnetic separation device and the sludge outlet of the skid-mounted tubular micro-filtration membrane device are connected with the sludge inlet of the skid-mounted sludge concentration device, the water outlet of the skid-mounted tubular micro-filtration membrane device is connected with an intermediate water tank I, the water outlet of the intermediate water tank I is connected with the inlet of a lifting pump II, the outlet of the lifting pump II is connected with the water inlet of the skid-mounted primary reverse osmosis device, the clean water outlet of the skid-mounted primary reverse osmosis device is connected with the inlet of a water production tank, the concentrated water outlet of the skid-mounted primary reverse osmosis device is connected with the inlet of an intermediate water tank II, the outlet of the intermediate water tank II is connected with the inlet of a lifting pump III, the outlet of the lifting pump III is connected with the inlet of the skid-mounted secondary reverse osmosis device, the clean water outlet of the skid-mounted secondary reverse osmosis device is connected with the water production tank, and the concentrated water outlet of the skid-mounted secondary reverse osmosis device is connected with a concentrated water tank.

[0008] The skid-mounted dosing device adds chemicals to the skid-mounted magnetic separation device, the skid-mounted tubular micro-filtration membrane device, the skid-mounted primary reverse osmosis device and the skid-mounted secondary reverse osmosis device through a chemical conveying pipeline.

[0009] The skid-mounted magnetic separation device, the skid-mounted tubular micro-filtration membrane device, the skid-mounted primary reverse osmosis device, the skid-mounted secondary reverse osmosis device, the skid-mounted sludge concentration device, the skid-mounted sludge treatment device, the skid-mounted dosing device and the skid-mounted chemical cleaning device are all provided with a skid frame as a chassis, facilitating transportation and assembly.

[0010] Preferably, the skid-mounted magnetic separation device is provided with a coagulation reaction tank connected with the skid-mounted dosing device.

[0011] Preferably, the skid-mounted tubular micro-filtration membrane device comprises a chemical reaction tank, a sludge temporary storage tank, a tubular micro-filtration membrane and a sludge conveying pump, the chemical reaction tank is connected with the skid-mounted dosing device, the chemical reaction tank is connected with the inlet of the tubular micro-filtration membrane, the sludge outlet of the tubular micro-filtration membrane is connected with the sludge temporary storage tank, and the sludge temporary storage tank is connected with the sludge inlet of the skid-mounted sludge concentration device through the sludge conveying pump.

[0012] Preferably, the skid-mounted sludge concentration device comprises a coal sludge concentration tank generated by a magnetic separation machine and a hard sludge concentration tank generated by a tubular micro-filtration membrane.

[0013] Preferably, the skid-mounted sludge treatment device is a plate-and-frame filter press with a skid frame.

[0014] Preferably, the skid-mounted chemical cleaning device comprises a reverse osmosis chemical cleaning tank, a cleaning pump and a cleaning safety filter, and the output pipeline of the cleaning pump is connected with the cleaning port of the reverse osmosis device.

[0015] Preferably, the skid-mounted dosing device comprises a sodium carbonate dosing pipeline, a hydrochloric acid dosing pipeline, a sodium hydroxide dosing pipeline, a calcium hydroxide dosing pipeline, a scale inhibitor dosing pipeline, a reducing agent dosing pipeline, a non-oxidizing bactericide dosing pipeline, a PAC dosing pipeline and a PAM dosing pipeline.

[0016] The outlet of the PAC dosing pipeline and the PAM dosing pipeline is connected to the dosing inlet of the coagulation reaction tank of the skid-mounted magnetic separation device.

[0017] The outlet of the scale inhibitor dosing pipeline, the reducing agent dosing pipeline and the non-oxidizing bactericide dosing pipeline is connected to the dosing inlet of the skid-mounted primary reverse osmosis device and the skid-mounted secondary reverse osmosis device, and the dosing inlet is the liquid inlet pipeline of the reverse osmosis device.

[0018] The outlet of the sodium hydroxide dosing pipeline, the calcium hydroxide dosing pipeline and the sodium carbonate dosing pipeline is connected to the dosing inlet of the dosing reaction tank of the skid-mounted tubular microfiltration membrane device.

[0019] The outlet of the hydrochloric acid dosing pipeline is connected to the dosing inlet of the intermediate water tank 1.

[0020] Preferably, the sludge outlet of the skid-mounted magnetic separation device is connected to the inlet of the coal slurry sludge concentration tank in the skid-mounted sludge concentration device, and the sludge outlet of the skid-mounted tubular microfiltration membrane device is connected to the inlet of the hard sludge concentration tank in the skid-mounted sludge concentration device.

[0021] Preferably, the outlet of the sludge concentration tank is connected to the inlet of the sludge feeding pump, and the outlet of the sludge feeding pump is connected to the inlet of the skid-mounted sludge treatment device.

[0022] The utility model has the following beneficial effects:

[0023] Compared with the traditional coal mine well water treatment system, the utility model adopts a short process treatment mode, omits the two-stage ultrafiltration and filtration unit, reduces the hardness of water after the tubular microfiltration membrane, and realizes reuse of the water meeting the requirements after two-stage reverse osmosis treatment and concentration water is used for yellow mud grouting, thereby reducing the cost; the functional equipment of the whole system is skid-mounted, which is favorable for factory prefabrication, assembly, shortens the construction period, is easy to install, reduces the occupied area and reduces the engineering investment; meanwhile, the number of equipment operation can be adjusted according to the amount of coal mine gushing water, the expansion and reconstruction are convenient, and the maintenance and transportation are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the principle structure diagram of the utility model mine wastewater treatment system. DETAILED DESCRIPTION

[0025] As shown in the accompanying drawings, Figure 1The mobile pry-mounted mine water treatment system comprises a pry-mounted magnetic separation device, a pry-mounted tubular microfiltration membrane device, a pry-mounted first reverse osmosis device, a pry-mounted second reverse osmosis device, a pry-mounted sludge concentration device, a pry-mounted sludge treatment device, a skid-mounted dosing device, a pry-mounted chemical cleaning device, an intermediate water tank I, an intermediate water tank II, a produced water tank and a concentrated water tank.

[0026] The pry-mounted magnetic separation device is provided with a sewage inlet, the water outlet of the pry-mounted magnetic separation device is connected with the inlet of the pry-mounted tubular microfiltration membrane device through a lifting pump I, the sludge outlet of the pry-mounted magnetic separation device and the sludge outlet of the skid-mounted tubular microfiltration membrane device are connected with the sludge inlet of the pry-mounted sludge concentration device, the water outlet of the skid-mounted tubular microfiltration membrane device is connected with the intermediate water tank I, the water outlet of the intermediate water tank I is connected with the inlet of the lifting pump II, the outlet of the lifting pump II is connected with the water inlet of the pry-mounted first reverse osmosis device, the clean water outlet of the pry-mounted first reverse osmosis device is connected with the inlet of the produced water tank, the concentrated water outlet of the pry-mounted first reverse osmosis device is connected with the inlet of the intermediate water tank II, the outlet of the intermediate water tank II is connected with the inlet of the lifting pump III, the outlet of the lifting pump III is connected with the inlet of the pry-mounted second reverse osmosis device, the clean water outlet of the pry-mounted second reverse osmosis device is connected with the produced water tank, and the concentrated water outlet of the pry-mounted second reverse osmosis device is connected with the concentrated water tank.

[0027] The skid-mounted dosing device is used for adding chemicals to the pry-mounted magnetic separation device, the pry-mounted tubular microfiltration membrane device, the pry-mounted first reverse osmosis device and the pry-mounted second reverse osmosis device through a chemical conveying pipeline, and the pry-mounted chemical cleaning device is connected with the pry-mounted first reverse osmosis device and the pry-mounted second reverse osmosis device.

[0028] The pry-mounted magnetic separation device, the pry-mounted tubular microfiltration membrane device, the pry-mounted first reverse osmosis device, the pry-mounted second reverse osmosis device, the pry-mounted sludge concentration device, the pry-mounted sludge treatment device, the skid-mounted dosing device and the pry-mounted chemical cleaning device are all provided with a pry frame as a chassis, facilitating transportation and assembly.

[0029] Preferably, the pry-mounted magnetic separation device is a general-purpose magnetic separation device for sewage treatment on the market, and preferably a pry-mounted magnetic separation device produced by Zhongjianhuaneng Technology Co., Ltd., which is provided with a coagulation reaction tank connected with the skid-mounted dosing device.

[0030] Preferably, the skid-mounted tubular microfiltration membrane device comprises a chemical reaction tank, a sludge temporary storage tank, a tubular microfiltration membrane and a sludge conveying pump, the chemical reaction tank is connected with the skid-mounted dosing device, the chemical reaction tank is connected with the inlet of the tubular microfiltration membrane, the sludge outlet of the tubular microfiltration membrane is connected with the sludge temporary storage tank, and the sludge temporary storage tank is connected with the sludge inlet of the pry-mounted sludge concentration device through the sludge conveying pump.

[0031] Preferably, the pry-mounted primary reverse osmosis device, pry-mounted secondary reverse osmosis device includes a security filter, a reverse osmosis membrane skid, a high-pressure pump, and an inter-stage booster pump. The pry-mounted primary reverse osmosis device and pry-mounted secondary reverse osmosis device are selected from the RO membrane reverse osmosis devices on the market, and preferably are the reverse osmosis devices with a pry rack produced by Zhongjianhuaneng Technology Co., Ltd.

[0032] Preferably, the pry-mounted sludge concentration device includes a coal slurry sludge concentration tank generated by a magnetic separator and a hard sludge concentration tank generated by a tubular microfiltration membrane.

[0033] Preferably, the pry-mounted sludge treatment device is a plate-and-frame filter press with a pry rack.

[0034] Preferably, the pry-mounted chemical cleaning device includes a reverse osmosis chemical cleaning tank, a cleaning pump, and a cleaning security filter. The output pipeline of the cleaning pump is connected to the cleaning port of the reverse osmosis device.

[0035] Preferably, the skid-mounted chemical dosing device includes a sodium carbonate dosing pipeline, a hydrochloric acid dosing pipeline, a sodium hydroxide dosing pipeline, a calcium hydroxide dosing pipeline, a scale inhibitor dosing pipeline, a reducing agent dosing pipeline, a non-oxidizing bactericide dosing pipeline, a PAC dosing pipeline, and a PAM dosing pipeline. Each pipeline is connected to a corresponding chemical storage container, and each pipeline is provided with a corresponding electric control valve and a metering pump.

[0036] The outlets of the PAC dosing pipeline and the PAM dosing pipeline are connected to the coagulation reaction tank of the pry-mounted magnetic separation device.

[0037] The outlets of the scale inhibitor dosing pipeline, the reducing agent dosing pipeline, and the non-oxidizing bactericide dosing pipeline are connected to the dosing inlet of the pry-mounted primary reverse osmosis device and pry-mounted secondary reverse osmosis device, which is the liquid inlet pipeline of the reverse osmosis device.

[0038] The outlets of the sodium hydroxide dosing pipeline, the calcium hydroxide dosing pipeline, and the sodium carbonate dosing pipeline are connected to the dosing inlet of the skid-mounted tubular microfiltration membrane device.

[0039] The outlet of the hydrochloric acid dosing pipeline is connected to the dosing inlet of the intermediate water tank 1.

[0040] Preferably, the sludge outlet of the pry-mounted magnetic separation device is connected to the inlet of the coal slurry sludge concentration tank in the pry-mounted sludge concentration device, and the sludge outlet of the pry-mounted tubular microfiltration membrane device is connected to the inlet of the hard sludge concentration tank in the pry-mounted sludge concentration device.

[0041] Preferably, the outlet of the sludge concentration tank is connected to the inlet of the sludge feeding pump, and the outlet of the sludge feeding pump is connected to the inlet of the pry-mounted sludge treatment device.

[0042] The tubular microfiltration membrane in the embodiment is made of PVDF high polymer material, and the assembly adopts internal pressure cross-flow filtration, and the filtration precision is as high as 0.1 um. Due to the structural characteristics of the tubular microfiltration membrane, the membrane can easily flush away the pollutants on the membrane surface during operation, and can also remove the substances intercepted by the microfiltration membrane through forward flushing, backwashing and chemical cleaning, and can ensure that the pollutants in the water do not contact the outer surface of the microfiltration membrane, thereby avoiding the precipitation and accumulation of pollutants outside the membrane tube. Therefore, the tubular microfiltration system has low requirements on the water quality, and the tolerance of suspended solids can reach 30000 mg / L to 40000 mg / L. The tubular microfiltration can replace the traditional sand filtration + ultrafiltration process. After the mine water is chemically reacted to remove hardness, the tubular microfiltration membrane is used for filtration, the calcium ion content of the tubular microfiltration membrane water can be reduced to 20 mg / L, the magnesium ion content can be reduced to 20 mg / L, the subsequent reverse osmosis system is protected, the scaling problem of the reverse osmosis system can be avoided, compared with the traditional coal mine water treatment system, the utility model adopts a short process treatment mode, two-stage ultrafiltration and filtration units are omitted, and the cost is reduced. The functions of the entire system are all in the form of pry installation, which is beneficial to factory prefabrication, assembly, shortens the construction period, is easy to install, reduces the occupied area, reduces the engineering investment, and can adjust the number of equipment operation according to the amount of coal mine water inflow, is convenient for expansion and reconstruction, is convenient for maintenance and transportation.

[0043] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, several improvements can be made without departing from the principles of the utility model, and these improvements should be considered as the protection range of the utility model without creative labor.

Claims

1. A mobile skid-mounted mine water treatment system, characterised in that: It includes pry-mounted magnetic separation device, pry-mounted tubular microfiltration membrane device, pry-mounted primary reverse osmosis device, pry-mounted secondary reverse osmosis device, pry-mounted sludge concentration device, pry-mounted sludge treatment device, skid-mounted dosing device, pry-mounted chemical cleaning device, intermediate water tank I, intermediate water tank II, water production tank and concentrated water tank. The pry-mounted magnetic separation device is provided with a sewage inlet, and the water outlet of the pry-mounted magnetic separation device is connected with the inlet of the pry-mounted tubular microfiltration membrane device through a lifting pump I; the sludge outlet of the pry-mounted magnetic separation device and the sludge outlet of the skid-mounted tubular microfiltration membrane device are connected with the sludge inlet of the pry-mounted sludge concentration device; the water outlet of the skid-mounted tubular microfiltration membrane device is connected with the intermediate water tank I; the water outlet of the intermediate water tank I is connected with the inlet of a lifting pump II; the outlet of the lifting pump II is connected with the water inlet of the pry-mounted primary reverse osmosis device; the clean water outlet of the pry-mounted primary reverse osmosis device is connected with the inlet of the water production tank; the concentrated water outlet of the pry-mounted primary reverse osmosis device is connected with the inlet of the intermediate water tank II; the outlet of the intermediate water tank II is connected with the inlet of a lifting pump III; the outlet of the lifting pump III is connected with the inlet of the pry-mounted secondary reverse osmosis device; the clean water outlet of the pry-mounted secondary reverse osmosis device is connected with the water production tank; and the concentrated water outlet of the pry-mounted secondary reverse osmosis device is connected with the concentrated water tank.

2. The mobile skid-mounted mine water treatment system of claim 1, wherein: The skid-mounted dosing device is used for adding chemicals to the pry-mounted magnetic separation device, the pry-mounted tubular microfiltration membrane device, the pry-mounted primary reverse osmosis device and the pry-mounted secondary reverse osmosis device through chemical conveying pipelines; and the pry-mounted chemical cleaning device is connected with the pry-mounted primary reverse osmosis device and the pry-mounted secondary reverse osmosis device.

3. The mobile skid-mounted mine water treatment system of claim 1, wherein: The pry-mounted magnetic separation device, the pry-mounted tubular microfiltration membrane device, the pry-mounted primary reverse osmosis device, the pry-mounted secondary reverse osmosis device, the pry-mounted sludge concentration device, the pry-mounted sludge treatment device, the skid-mounted dosing device and the pry-mounted chemical cleaning device are all provided with pry frames as chassis.

4. The mobile skid-mounted mine water treatment system of claim 1, wherein: The pry-mounted magnetic separation device is provided with a coagulation reaction tank connected with the skid-mounted dosing device.

5. The mobile skid-mounted mine water treatment system of claim 1, wherein: The skid-mounted tubular microfiltration membrane device comprises a chemical reaction tank connected with the skid-mounted dosing device.

6. The mobile skid-mounted mine water treatment system of claim 1, wherein: The pry-mounted sludge concentration device comprises a coal slurry sludge concentration tank generated by a magnetic separation machine and a hard sludge concentration tank generated by a tubular microfiltration membrane.

7. The mobile skid-mounted mine water treatment system of claim 1, wherein: The pry-mounted sludge treatment device is a plate-and-frame filter press with a pry frame.

8. The mobile skid-mounted mine water treatment system of claim 1, wherein: The skid-mounted dosing device comprises sodium carbonate chemical conveying pipeline, hydrochloric acid chemical conveying pipeline, sodium hydroxide chemical conveying pipeline, calcium hydroxide chemical conveying pipeline, scale inhibitor chemical conveying pipeline, reducing agent chemical conveying pipeline, non-oxidizing bactericide chemical conveying pipeline, PAC chemical conveying pipeline and PAM chemical conveying pipeline. The outlets of the PAC chemical conveying pipeline and the PAM chemical conveying pipeline are connected with the chemical adding inlets of the coagulation reaction tank of the pry-mounted magnetic separation device. The outlets of the scale inhibitor chemical conveying pipeline, the reducing agent chemical conveying pipeline and the non-oxidizing bactericide chemical conveying pipeline are connected with the chemical adding inlets of the pry-mounted primary reverse osmosis device and the pry-mounted secondary reverse osmosis device, and the chemical adding inlets are liquid inlet pipelines of the reverse osmosis devices. The outlets of the sodium hydroxide chemical conveying pipeline, the calcium hydroxide chemical conveying pipeline and the sodium carbonate chemical conveying pipeline are connected with the chemical adding inlets of the chemical reaction tank of the skid-mounted tubular microfiltration membrane device. The outlet of the hydrochloric acid chemical conveying pipeline is connected with the chemical adding inlet of the intermediate water tank I.

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