CN104496081B - A kind of mercurous sewage water treatment method and treatment unit - Google Patents

A kind of mercurous sewage water treatment method and treatment unit Download PDF

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Publication number
CN104496081B
CN104496081B CN201410814729.2A CN201410814729A CN104496081B CN 104496081 B CN104496081 B CN 104496081B CN 201410814729 A CN201410814729 A CN 201410814729A CN 104496081 B CN104496081 B CN 104496081B
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mercury
water
tank
pipeline
sewage
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CN104496081A (en
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朱聪
裴洁
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CHONGQING KUNQUAN ENVIRONMENTAL ENGINEERING CO., LTD.
Southwest Petroleum University
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CHONGQING CHENGLU ENVIRONMENTAL ENGINEERING Co Ltd
Southwest Petroleum University
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Abstract

The invention provides a kind of mercurous sewage water treatment method and treatment unit, device comprises: profit mercury separator; Gas main road is connected with the bottom of gaseous mercury adsorber, and gas main road is connected by pipeline with the top of profit mercury separator, air supporting mercury eliminator and mercury adsorption filter respectively; The top of the sidewall of profit mercury separator, the sidewall of air supporting mercury eliminator and mercury adsorption filter is connected successively by pipeline, and the bottom of mercury adsorption filter is connected with the side wall upper part of water purification pot by water purification pipeline.Method is: after profit mercury separator, air supporting mercury eliminator, mercury adsorption filter, the process of gaseous mercury adsorber, enter water purification pot containing Mercury sewage by water purification pipeline, and the waste gas that profit mercury separator, air supporting mercury eliminator, mercury adsorption filter are discharged enters in gaseous mercury adsorber and carries out adsorption treatment.What the method that the embodiment of the present invention provides and device occurred oil, Natural gas extraction carries out specific aim process containing Mercury sewage, and after process, mercury content is at below 10ppb.

Description

A kind of mercurous sewage water treatment method and treatment unit
Technical field
The present invention relates to sewage treatment area, particularly relate to a kind of mercurous sewage water treatment method and treatment unit.
Background technology
China is a lack of water country, and sewage disposal and reuse are the effective measure developing water resources.Reusing sewage be by municipal effluent, industrial sewage by after the device processes such as membrane bioreactor, use it for greening, flushing, supplement and view and admire the non-objects of drinking such as water body, and cleaning water is used for the purposes of drinking contour water quality requirement.Municipal effluent, industrial sewage can obtain nearby, can remove long distance water transfer from, and realize processing nearby realizing making full use of of water resources, sewage processes through nearby simultaneously, also can prevent sewage from long distance delivery process, causing effluent seepage, cause polluted underground water source.Reusing sewage in the world the area of many lacks of water extensively adopt, be considered to the most practical technique of 21 century sewage disposal.
China per capita water resources owning amount is only 2250m 3/ people. year, 1/4 of not enough world average level.In China more than 600 city, have more than 300 seat urban water shortages, wherein city of severe water shortage has more than 100, nearly 6,000,000,000 m of year water deficit 3, every year because lack of water causes financial loss about 2,000 hundred million yuans.North China's water resources ownership per capita only has 250-480m 3/ people. in year, lower than 1/5 of national per capita share, all cities in this area nearly all face water shortage problem.Therefore reusing sewage is one of important measures alleviating North China Plain water crisis.
Need to process targetedly containing Mercury sewage in all sewage disposals, nowadays mercury-containing waste water is mainly derived from non-ferrous metals smelting works, chemical plant, insecticide factory, paper mill, dye processing plant and thermal technology instrument instrucment and meter plant etc.The method removing inorganic mercury from waste water has that sulphide precipitation, chemical coagulation method, charcoal absorption are timid, metal deoxidization, ion exchange method and microbial method etc., these are containing the treatment process of Mercury sewage, method is more single, mercury separation efficiency is low, mercury content after process in water purification is higher, also not thorough to mercurous sewage disposal.
Especially, a large amount of containing Mercury sewage in oil, Natural gas extraction waste water, because sewage is oil-water mixture, also there is no shaping technology to use for reference can to realize the process containing Mercury sewage of oil-water mixture, and after process in the mercury content of water higher, therefore how to invent a kind of targeted and comprehensive treatment process containing Mercury sewage that oil, Natural gas extraction are occurred and device is technical problem nowadays urgently to be resolved hurrily.
In view of more than, special this invention is proposed.
Summary of the invention
The object of the present invention is to provide a kind of mercurous waste disposal plant and treatment process, to solve not to the technology of carrying out specific aim process containing Mercury sewage that oil, Natural gas extraction occur in prior art, and the mercury content after process in water still compares high-technology problem.
The mercurous waste disposal plant that the embodiment of the present invention provides, comprising: for removing the profit mercury separator of oil, suspended substance and mercury, air supporting mercury eliminator, mercury adsorption filter, gaseous mercury adsorber, water purification pot, water purification pipeline and gas main road;
Gas main road is connected with the bottom of gaseous mercury adsorber, and gas main road is connected by pipeline with the side wall upper part of the top of profit mercury separator, the top of air supporting mercury eliminator and mercury adsorption filter respectively;
The top of the sidewall of profit mercury separator, the sidewall of air supporting mercury eliminator and mercury adsorption filter is connected successively by pipeline, and the bottom of mercury adsorption filter is connected with the side wall upper part of water purification pot by water purification pipeline.
Preferably, also comprise into water surge tank, for the first mixing tank of mix with containing Mercury sewage by PH conditioning agent and the first pipeline, the bottom of surge tank of intaking is connected by the first pipeline with the sidewall of profit mercury separator; First mixing tank is arranged on the first pipeline.
Preferably, the structure of profit mercury separator comprises tank body, tilted plate and cross-flow waved plate, and cross-flow waved plate superposes in block the intersection and is arranged at the middle part in tank body, and tilted plate is arranged at immediately below cross-flow waved plate in the shape of falling the Eight characters.
Preferably, also comprise air supporting surge tank, for the second mixing tank of being mixed with containing Mercury sewage by flocculation agent and second pipe, the sidewall of profit mercury separator is connected by second pipe with air supporting surge tank, and the second mixing tank is arranged on second pipe.
Preferably, the structure of air supporting mercury eliminator comprises tank body and vertical dividing plate; The inside of tank body is divided into into water buffer zone along water (flow) direction by dividing plate, 1-4 level flotation area, stable region and 1-2 level slag collecting area;
Injector, recycle pump and sewage draining exit is provided with in every grade of flotation area, the jet orifice direction of injector down and be arranged at the inside of tank body, recycle pump is arranged at the outside of tank body, the spray tube of injector is connected by pipeline with one end of recycle pump, and the other end of recycle pump is connected with the bottom of tank body; Sewage outfalls setting is in the top of tank body;
Be provided with the Water level controller for stable liquid level and sewage draining exit in stable region, sewage outfalls setting is in the top of tank body;
Be provided with receipts cinder notch in every grade of slag collecting area, receive the bottom that cinder notch is arranged at tank body.
Preferably, the structure of mercury adsorption filter comprises tank body, water distributor, filtering net, filler and water collection sheet;
The top of tank body is provided with the water-in for entering containing Mercury sewage, and water-in is connected by pipeline with water distributor, and be provided with filtering net in every root pipeline of water distributor, tank body inner bottom part is provided with water collection sheet, and water collection sheet is placed with filler.
Preferably, be provided with filler in described gaseous mercury adsorber, described filler is sulfur loading active carbon.
Preferably, also comprise topping-up pump, topping-up pump is arranged on the pipeline of the sidewall of air supporting mercury eliminator and the top connection of mercury adsorption filter.
Preferably, also comprise backwashing pump and backwash pipeline, one end of backwash pipeline is connected with the bottom of water purification pot, and the other end of backwash pipeline and water purification pipeline communication, backwashing pump is arranged on backwash pipeline.
The embodiment of the present invention additionally provides a kind of method that mercurous waste disposal plant is disposed of sewage, and comprises the steps:
After profit mercury separator, air supporting mercury eliminator, mercury adsorption filter, the process of gaseous mercury adsorber, enter water purification pot containing Mercury sewage by water purification pipeline, the waste gas that profit mercury separator, air supporting mercury eliminator, mercury adsorption filter top are discharged is entered in gaseous mercury adsorber by gas main road and carries out adsorption treatment.
The mercurous sewage water treatment method that the embodiment of the present invention provides and treatment unit, what occur oil, Natural gas extraction industry to carry out effectively containing Mercury sewage and processes targetedly, first by high efficiency oil-water isolation technique except in decontaminated water contained 80% oil, 70% solid particulate and 80% Elemental Mercury, sump oil and mud are isolated, the waste gas produced in device is by emptying after gaseous mercury adsorber demercuration, and the demercuration rate of gaseous mercury adsorber can reach more than 80%.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the mercurous waste disposal plant that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the mercurous waste disposal plant that Fig. 2 provides for further embodiment of this invention;
Reference numeral:
1-is intake surge tank; 2-profit mercury separator;
3-air supporting surge tank; 4-air supporting mercury eliminator;
5-mercury adsorption filter; 6-gaseous mercury adsorber;
7-water purification pot; 8-topping-up pump;
9-backwashing pump; 10-first mixing tank;
11-second mixing tank; 12-water purification pipeline;
13-gas main road; 14-recycle pump;
15-backwash pipeline.
Embodiment
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, particular case above-mentioned term concrete meaning in the present invention can be understood.
The mercurous waste disposal plant that the embodiment of the present invention provides, as shown in Figure 1, comprising: for removing the profit mercury separator 2 of oil, suspended substance and mercury, air supporting mercury eliminator 4, mercury adsorption filter 5, gaseous mercury adsorber 6, water purification pot 7, water purification pipeline 12 and gas main road 13;
Gas main road 13 is connected with the bottom of gaseous mercury adsorber 6, and gas main road 13 is connected by pipeline with the side wall upper part of the top of profit mercury separator 2, the top of air supporting mercury eliminator 4 and mercury adsorption filter 5 respectively;
The top of the sidewall of profit mercury separator 2, the sidewall of air supporting mercury eliminator 4 and mercury adsorption filter 5 is connected successively by pipeline, and the bottom of mercury adsorption filter 5 is connected with the side wall upper part of water purification pot 7 by water purification pipeline 12.
The mercurous waste disposal plant that the embodiment of the present invention provides, what occur oil, Natural gas extraction industry to carry out effectively containing Mercury sewage and processes targetedly, first by high efficiency oil-water isolation technique except in decontaminated water contained 80% oil, 70% solid particulate and 80% Elemental Mercury, sump oil and mud are isolated, the waste gas produced in device is by emptying after gaseous mercury adsorber demercuration, and the demercuration rate of gaseous mercury adsorber can reach more than 80%.
Preferably, as shown in Figure 2, also comprise into water surge tank 1, the first mixing tank 10 and the first pipeline for mix with containing Mercury sewage by PH conditioning agent, the bottom of surge tank of intaking is connected by the first pipeline with the sidewall of profit mercury separator; First mixing tank 10 is arranged on the first pipeline, mix fully, and played shock absorption after adding PH conditioning agent in order to make it with containing Mercury sewage before enter profit mercury separator, preferably arranges mixing tank and water inlet surge tank.
Preferably, the structure of profit mercury separator 2 comprises tank body, tilted plate and cross-flow waved plate, and cross-flow waved plate superposes in block the intersection and is arranged at the middle part in tank body, and tilted plate is arranged at immediately below cross-flow waved plate in the shape of falling the Eight characters.
Preferably, the mercurous wastewater inlet of profit mercury separator is provided with swirler, can strengthen the removal efficiency of mercury in sewage.
Profit mercury separator includes efficient the spiral flow at inlet device, high efficiency oil-water assembles the efficient elements such as filler increases its removal efficiency.High efficiency oil-water is assembled filler and is adopted cross-flow formula waved plate, and this corrugated plate material based on HPVC, includes multiple additives, makes it have oleophylic and non-viscous oil, aging-resistant feature.Waved plate stacks up one by one, and distance between plates is 12.7mm.Usual employing level is installed.When liquid flows through, oil droplet is caught rapidly by waved plate, is gathered on waved plate, and separates with water.Short grained oil droplet is easy to be caught by the waved plate of oleophylic, hyperchannel along waved plate after waved plate catches moves up and is constantly gathered into oarse-grained oil droplet, according to the oil droplet of Stokes principle larger particles, float to rapidly the surface of water-and-oil separator, profit is thoroughly separated; After entering profit mercury separator containing Mercury sewage after dosing, change flow direction, produce stable laminar flow, slowly enter cross-flow formula waved plate, at low flow rates, by shallow-layer swash plate principle, mercury throw out and mercurous suspended substance sink, and are got rid of by device bottom slag-drip opening; Thus reach the object of high efficiency separation mercury.Usually the oil in sewage, SS content can be down to 100mg/L, decreasing ratio reaches more than 80%.
Preferably, also comprise air supporting surge tank 3, the second mixing tank 11 and second pipe for being mixed with containing Mercury sewage by flocculation agent, the sidewall of profit mercury separator 2 is connected by second pipe with air supporting surge tank 3, second mixing tank 11 is arranged on second pipe, in order to make it and mix fully containing Mercury sewage after adding flocculation agent, and shock absorption was played before entering profit mercury separator, mixing tank and air supporting surge tank are preferably set.
Preferably, also comprise chemicals dosing plant, chemicals dosing plant is connected with the outlet conduit of the first mixing tank and the second mixing tank and air supporting surge tank respectively by pipeline, by adding PH conditioning agent as alkaline matters such as sodium hydroxide in the first mixing tank, pH value will be adjusted to for neutral containing Mercury sewage, to prevent mercurous sewage to the damage of equipment, the work-ing life of extension device, then flocculation agent is prepared by chemicals dosing plant in the second mixing tank, as materials such as polymerize aluminum chlorides (PAC), coagulant aids polyacrylamide (PAM) is added by chemicals dosing plant again on the outlet conduit of air supporting surge tank, two kinds of composite reagents use with the oil removing 80%, the suspended substance of 90% and the mercury of 80%.Chemicals dosing plant is made up of molten medicine-chest, storage medicine-chest, whipping appts, volume pump, supporting pipe valve and service platform etc.Medicament dissolves in molten medicine-chest, enters storage medicine-chest, be delivered to chemical feeding points by volume pump after stirring.
Preferably, the structure of air supporting mercury eliminator comprises tank body and vertical dividing plate; The inside of tank body is divided into into water buffer zone along water (flow) direction by dividing plate, 1-4 level flotation area, stable region and 1-2 level slag collecting area;
Injector, recycle pump 14 and sewage draining exit is provided with in every grade of flotation area, the jet orifice direction of injector down and be arranged at the inside of tank body, recycle pump 14 is arranged at the outside of tank body, the spray tube of injector is connected by pipeline with one end of recycle pump, and the other end of recycle pump is connected with the bottom of tank body; Sewage outfalls setting is in the top of tank body;
Be provided with the Water level controller for stable liquid level and sewage draining exit in stable region, sewage outfalls setting is in the top of tank body;
Be provided with receipts cinder notch in every grade of slag collecting area, receive the bottom that cinder notch is arranged at tank body.
Wherein, acting as of buffer zone reduces water inlet flow velocity greatly to the impact of 1 grade of flotation area water body; The micro bubble utilizing injector to produce that act as of flotation area rises at gas-floating chamber, and be attached on oil droplet, suspended solids and mercurous suspended substance, they are carried into liquid level and form scum silica frost, scum silica frost is collected through a slag receiving trough and is discharged from sewage draining exit, and the water after process enters stable region; Stable region act as sewage complete scum silica frost (oil) water be separated enter stable region, scum silica frost is collected in order to ensure the even water outlet of device and internal float slag chute, be provided with adjustable water level control device in stable region and guarantee that device interior constant liquid level is a level height, the scum silica frost produced in stable region and header tank is collected through secondary slag receiving trough and is discharged from sewage draining exit.
Air supporting mercury eliminator has following features:
(1) inner staging treating, the residence time is short, flotation effect good, slagging-off rate is high, and the oil in sewage, SS content can be down to 20mg/L, decreasing ratio can reach more than 80%;
(2) energy consumption is little, normal pressure can run, working condition requirement is low;
(3) interior movement-less part, safeguard low cost;
(4) totally-enclosed operation, environmentally safe.
Preferably, the structure of mercury adsorption filter comprises tank body, water distributor, filtering net, filler and water collection sheet;
The top of tank body is provided with the water-in for entering containing Mercury sewage, and water-in is connected by pipeline with water distributor, and be provided with filtering net in every root pipeline of water distributor, tank body inner bottom part is provided with water collection sheet, and water collection sheet is placed with filler.
Preferably, the strainer material of mercury adsorption filter is Q235-A or 304 stainless steels, and liner vulcanized rubber is anticorrosion, and filler is two kinds, and upper strata is water treatment mercury absorbent, packing height 0.8m; Lower floor is natural siliceous sand, packing height 0.6m, and filtering velocity is 10m/h, and this strainer can realize the Elemental Mercury of the overwhelming majority removed in water, ionic mercury, organic mercury and suspended substance etc., mercury adsorption rate >=85%.
Preferably, be provided with filler in described gaseous mercury adsorber, described filler is sulfur loading active carbon, sulfur loading active carbon for removing the mercury in waste gas, mercury adsorption rate >=80%.
Gaseous mercury adsorber is entered containing mercury gas by equipment top vent containing what volatilize in Mercury sewage; Arrange induced draft fan one in gaseous mercury adsorber, induced draft fan exhaust blast is 120mm water column, and pressure is 0.0012MPa.By induced draft fan, the mercurous gas extraction in high efficiency oil-water mercury separator, efficient air-floating mercury removal device is entered gas mercury adsorption unit, by the mercury in the adsorbed gas of gas mercury absorbent, the gas discharging after process; In sewage, mercury volatile quantity is little, if other equipment Exhaust Gas reach mercury content 0.015mg/m in " tin, antimony, mercury emission of industrial pollutants standard " BG-2013 exposure draft 3requirement, then open equipment bypath valve, do not need through gaseous mercury removal device, directly discharge in air.Consider that this device is gas treatment equipment, also can arrange safety valve, integral pressure is 0.1MPa.
Preferably, also comprise topping-up pump 8, topping-up pump 8 is arranged on the pipeline of the sidewall of air supporting mercury eliminator and the top connection of mercury adsorption filter.
Preferably, also comprise backwashing pump 9 and backwash pipeline 15, one end of backwash pipeline 15 is connected with the bottom of water purification pot 7, the other end of backwash pipeline 15 is communicated with water purification pipeline 12, backwashing pump 9 is arranged on backwash pipeline 15, when the processing power of mercury adsorption filter is not high, for carrying out backwash and regeneration.
The mercurous waste disposal plant that the embodiment of the present invention provides, as shown in Figure 1-2, specific works flow process is as follows:
First oil, Natural gas extraction waste water enter into water surge tank 1, add appropriate sodium hydroxide by chemicals dosing plant and former water pH is transferred to 7-8, enter profit mercury separator 2 again, by high efficiency oil-water isolation technique, the oil of 80%, 70% solid particulate and 80% Elemental Mercury can be removed, isolate sump oil and mud, after gas inlet state mercury adsorber 6 demercuration of generation, go emptying.
Added the flocculant poly aluminum chloride (PAC) of 80mg/L by chemicals dosing plant from profit mercury separator 2 sewage out, after entering air supporting surge tank 3 buffering, added the coagulant aids polyacrylamide (PAM) of 1.5mg/L by chemicals dosing plant in the outlet of air supporting surge tank 3, two kinds of composite reagents use with remove the oil of 80%, the suspended substance of 90% and 80% mercury; After enter air supporting mercury eliminator 4, by induction flotation remove above material formed cotton-shaped suspended substance, isolate sump oil and mud, after gas inlet state mercury adsorber 6 demercuration of generation, go emptying.
After topping-up pump 8 supercharging, deliver to mercury adsorption filter 5 from air supporting mercury eliminator 4 out sewage, through charcoal absorption removing 85% mercury and 85% suspended substance after, be purified water, after gas inlet state mercury adsorber 6 demercuration of generation, go emptying.Water purification pot 7 is entered from mercury adsorption filter 5 purifying waste water out.
When the water outlet mercury content of mercury adsorption filter 5 raises, need back flushing be carried out, stoppage in transit mercury adsorption filter topping-up pump 8, run backwashing pump 9, carry out back flushing from water purification pot 7 exhausting and purifying water.
If when former water mercury content is higher, adding clorox (NaClO) by the elemental mercury oxidation in sewage by chemicals dosing plant for subsequent use is ionic mercury, then adds sodium sulphite (Na in the downstream of air supporting surge tank 2s) or 1689 metal ion treatment agent, thus effectively enhance the adaptability of mercurous waste water dam device to the former water mercury content of difference.
The mercurous waste disposal plant that the embodiment of the present invention provides, has following features:
(1) what occur in employing high efficiency separation, flocculating settling, efficient air-floating, absorption, filtration combination art breading oil, gas exploitation course contains Mercury sewage, effective reduction Oil in Sewage Water, suspended substance and mercury content, guarantee to purify waste water middle mercury content lower than 10ppb;
(2) profit mercury separator adopts efficient the spiral flow at inlet device, high efficiency oil-water to assemble efficient element and the special structure designs such as filler, increases mercury separation efficiency;
(3) efficient air-floating mercury eliminator adopts and sprays induction flotation, compare other air-floating apparatus, spray induction flotation and there is the advantages such as the residence time is short, energy consumption is little, movement-less part, totally-enclosed operation, environmentally safe, effectively improve the separation efficiency of oil, mercurous suspended substance;
(4) mercury adsorption filter filtering layer adopts the double-deck filling-material structure design of adsorption filtration, and both simplification of flowsheet turn improved mercury removal efficiency.
(5) complete assembly adopts sledge installing meter, and floor space is little, simple to operate, strong adaptability.
The embodiment of the present invention additionally provides a kind of method that mercurous waste disposal plant is disposed of sewage, and comprises the steps:
After profit mercury separator, air supporting mercury eliminator, mercury adsorption filter, the process of gaseous mercury adsorber, enter water purification pot containing Mercury sewage by water purification pipeline, the waste gas that profit mercury separator, air supporting mercury eliminator, mercury adsorption filter top are discharged is entered in gaseous mercury adsorber by gas main road and carries out adsorption treatment.
The mercurous sewage water treatment method that the embodiment of the present invention provides, what occur oil, Natural gas extraction industry to carry out effectively containing Mercury sewage and processes targetedly, first by high efficiency oil-water isolation technique except in decontaminated water contained 80% oil, 70% solid particulate and 80% Elemental Mercury, sump oil and mud are isolated, the waste gas produced in device is by emptying after gaseous mercury adsorber demercuration, and the demercuration rate of gaseous mercury adsorber can reach more than 80%.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (8)

1. a mercurous waste disposal plant, is characterized in that, comprising: for removing the profit mercury separator of oil, suspended substance and mercury, air supporting mercury eliminator, mercury adsorption filter, gaseous mercury adsorber, water purification pot, water purification pipeline and gas main road;
Described gas main road is connected with the bottom of described gaseous mercury adsorber, and described gas main road is connected by pipeline with the side wall upper part of the top of described profit mercury separator, the top of described air supporting mercury eliminator and described mercury adsorption filter respectively;
The top of the sidewall of described profit mercury separator, the sidewall of described air supporting mercury eliminator and described mercury adsorption filter is connected successively by pipeline, and the bottom of described mercury adsorption filter is connected with the side wall upper part of described water purification pot by water purification pipeline;
Also comprise into water surge tank, for the first mixing tank of pH adjusting agent being mixed with containing Mercury sewage and the first pipeline, the bottom of described water inlet surge tank is connected by the first pipeline with the sidewall of described profit mercury separator; Described first mixing tank is arranged on described first pipeline;
Wherein, the structure of described profit mercury separator comprises tank body, tilted plate and cross-flow waved plate, described cross-flow waved plate superposes in block the intersection and is arranged at the middle part in described tank body, and described tilted plate is arranged at immediately below described cross-flow waved plate in the shape of falling the Eight characters.
2. the mercurous waste disposal plant of one according to claim 1, it is characterized in that, also comprise air supporting surge tank, for the second mixing tank of being mixed with containing Mercury sewage by flocculation agent and second pipe, the sidewall of described profit mercury separator is connected by second pipe with described air supporting surge tank, and described second mixing tank is arranged on described second pipe.
3. the mercurous waste disposal plant of one according to claim 1, is characterized in that, the structure of described air supporting mercury eliminator comprises tank body and vertical dividing plate; The inside of tank body is divided into into water buffer zone along water (flow) direction by described dividing plate, 1-4 level flotation area, stable region and 1-2 level slag collecting area;
Injector, recycle pump and sewage draining exit is provided with in every grade of described flotation area, the jet orifice direction of described injector down and be arranged at the inside of described tank body, described recycle pump is arranged at the outside of described tank body, the spray tube of described injector is connected by pipeline with one end of recycle pump, and the other end of described recycle pump is connected with the bottom of described tank body; Described sewage outfalls setting is in the top of described tank body;
Be provided with the Water level controller for stable liquid level and sewage draining exit in described stable region, described sewage outfalls setting is in the top of described tank body;
Be provided with receipts cinder notch in every grade of described slag collecting area, described receipts cinder notch is arranged at the bottom of described tank body.
4. the mercurous waste disposal plant of one according to claim 1, is characterized in that, the structure of described mercury adsorption filter comprises tank body, water distributor, filtering net, filler and water collection sheet;
The top of described tank body is provided with the water-in for entering containing Mercury sewage, described water-in is connected by pipeline with described water distributor, be provided with filtering net in every root pipeline of described water distributor, described tank body inner bottom part is provided with water collection sheet, and described water collection sheet is placed with described filler.
5. the mercurous waste disposal plant of one according to claim 1, is characterized in that, is provided with filler in described gaseous mercury adsorber, and described filler is sulfur loading active carbon.
6. the mercurous waste disposal plant of one according to claim 1, is characterized in that, also comprise topping-up pump, and described topping-up pump is arranged on the pipeline of the sidewall of described air supporting mercury eliminator and the top connection of described mercury adsorption filter.
7. the mercurous waste disposal plant of one according to claim 1, it is characterized in that, also comprise backwashing pump and backwash pipeline, one end of described backwash pipeline is connected with the bottom of described water purification pot, the other end of described backwash pipeline and described water purification pipeline communication, described backwashing pump is arranged on described backwash pipeline.
8. the method that a kind of mercurous waste disposal plant described in any one of claim 1-7 is disposed of sewage, is characterized in that, comprise the steps:
After profit mercury separator, air supporting mercury eliminator, mercury adsorption filter, the process of gaseous mercury adsorber, enter water purification pot containing Mercury sewage by water purification pipeline, the waste gas that profit mercury separator, air supporting mercury eliminator, mercury adsorption filter top are discharged is entered in gaseous mercury adsorber by gas main road and carries out adsorption treatment.
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CN108640351A (en) * 2018-05-29 2018-10-12 佛山市盟发净水科技有限公司 Mercurous sewage disposal system
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