Wet electric waste water reuse system
Technical field
The utility model relates to reclaiming system, and more specifically, it relates to a kind of wet electric waste water reuse system.
Background technology
At present, for meeting stricter environmental requirement, many coal-burning power plants arrange Wet-type electric dust removal system (hereinafter referred to as wet electricity) after desulfuration absorbing tower.Wet electricity needs a large amount of wash-down water, and after this partial flushing water washes away pole plate, flow out from ash bucket, component loops utilizes, and part is outer to be lined up as wet electric waste water.This effluent part contains more suspended substance (concentration is generally between 2000 ~ 4000mg/L), and pH value, between 4 ~ 6, cannot directly utilize.If enter in the waste water system of other device, certainly will increase pollution, causing water to consume increases, and destroys the water balance of miscellaneous equipment, and the equipment that affects runs.
Utility model content
The purpose of this utility model overcomes deficiency of the prior art, provides a kind of rational in infrastructure, reduce contaminated wastewater, reduce the wet electric waste water reuse system of water consumption.
This wet electric waste water reuse system, comprises wet-pit, high-efficiency clarifier, mist eliminator flushing water tank, mist eliminator flushing water pump, wet desulphurization absorption tower and sludge pump; Wet-pit is connected with the import of high-efficiency clarifier, the top water outlet of high-efficiency clarifier is connected with the import of mist eliminator flushing water tank, mud mouth bottom high-efficiency clarifier is connected to stock tank place, bottom, absorption tower by sludge pump, and the water outlet of mist eliminator flushing water tank is connected to the spray piping interface of top, absorption tower mist eliminator by mist eliminator flushing water pump.
As preferably: the water-in of mist eliminator flushing water tank is also connected with process water water pipe.
As preferably: high-efficiency clarifier comprises core barrel, mud scraper and filler from top to bottom successively and is all located in housing.
The beneficial effects of the utility model are:
1, reduce contaminated wastewater, reduce water consumption
Wet electric waste water reuse system processes wet electric waste water, water after clarification is reclaimed as absorption tower demisting device wash-down water simultaneously and use, the bottom concentrated solution of high-efficiency clarifier reclaims as absorption tower make up water and uses, and decreases discharge of wastewater and pollutes, and effectively reduces the water consumption of system.
2, adaptability and good stability
High-efficiency clarifier still can carry out solid-liquid separation effectively when wet electric waste water suspension change in concentration is larger, and can dual-purpose one standby or mode for subsequent use each other reasonably configure, and ensures settler steady running; The process water water pipe of mist eliminator flushing water tank can ensure the water yield and the water quality requirement of absorption tower demisting device wash-down water.When whole system tackles changeable operating mode, adaptability is good, reliable and stable.
3, technical process is simple, investment and O&M cost low
Wet electric waste water reuse system increase only high-efficiency clarifier, mist eliminator flushing water tank, mist eliminator flushing water pump, sludge pump and connecting pipeline etc., and system process is simple.System major equipment, material are conventional products, and be easy to buying, cost of investment is low.High-efficiency clarifier power is not more than 3kW, and energy consumption is lower, and system device is few, and pipeline is simple, and this system can be included in desulphurization system unified management and safeguard, O&M cost is low.
Accompanying drawing explanation
Fig. 1 is the utility model individual layer plane arrangement structure schematic diagram;
Fig. 2 is one-sided pipeline individual layer plot plan;
Description of reference numerals: wet-pit 1, high-efficiency clarifier 2, mist eliminator flushing water tank 3, mist eliminator flushing water pump 4, absorption tower 5, sludge pump 6, housing 7, core barrel 8, mud scraper 9, filler 10.
Embodiment
Below in conjunction with embodiment, the utility model is described further.The explanation of following embodiment just understands the utility model for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
As shown in Figure 1 to Figure 2.This wet electric waste water reuse system of the present utility model, comprises wet-pit 1, high-efficiency clarifier 2, mist eliminator flushing water tank 3, mist eliminator flushing water pump 4, wet desulphurization absorption tower 5 and sludge pump 6; Wet-pit 1 is connected with the import of high-efficiency clarifier 2, and high-efficiency clarifier 2 comprises core barrel 8, mud scraper 9 and filler 10 from top to bottom successively and is all located in housing 7.The top water outlet of high-efficiency clarifier 2 is connected with the import of mist eliminator flushing water tank 3, and the water-in of mist eliminator flushing water tank 3 is also connected with process water water pipe.Mud mouth bottom high-efficiency clarifier 2 is connected to stock tank place, bottom, absorption tower 5 by sludge pump 6, and the water outlet of mist eliminator flushing water tank 3 is connected to the spray piping interface of top, absorption tower 5 mist eliminator by mist eliminator flushing water pump 4.
Wet electric waste water reuse system is made up of parts such as wet electric Waste Water Treatment, waste water recycling system and system water supplements.
(1) wet electric Waste Water Treatment
Wet electric waste water delivers to high-efficiency clarifier 2 by the electric wet-pit 1 that wets, and relies on physics settlement action to carry out solid-liquid separation in high-efficiency clarifier 2.After solid-liquid separation, high-efficiency clarifier 2 top clear water suspension content is less than 500mg/L.
(2) waste water recycling system
High-efficiency clarifier 2 top clean water overflow, to mist eliminator flushing water tank 3, delivers to desulfuration absorbing tower 5 as the reuse of absorption tower demisting device wash-down water through mist eliminator flushing water pump 4.The bottom concentrated solution of high-efficiency clarifier 2 is then disposed to absorption tower 5 stock tank by sludge pump 6 and carries out reuse as absorption tower 5 moisturizing.
(3) system water supplement
Because the water yield of mist eliminator flushing water is comparatively large and higher to water quality requirement, therefore draws a road process water water pipe to mist eliminator flushing water tank 3, meet absorption tower demisting device to the water yield of wash-down water and water quality requirement.
Wet electric waste water clarifying effect is good, water inlet concentration of suspension is more than 3000mg/L, clarification upper back clear water concentration of suspension is not more than 300mg/L, desulphurization system normal operation simultaneously, Parameters variation is steady, and water-saving result is obvious, for separate unit 1000MW unit, compared with all arranging outward with wet electric waste water, adopt this system can reduce contaminated wastewater amount and be about 39m
3/ h.
During system cloud gray model, wet electric wet-pit is connected with high-efficiency clarifier by pipeline, wet electric waste water is delivered to high-efficiency clarifier and recycles.Top clear water after clarification by tube overflow to mist eliminator flushing water tank, and through mist eliminator flushing water pump deliver to desulfuration absorbing tower for absorption tower demisting device cleaning, bottom clarification concentrated solution deliver to desulfuration absorbing tower stock tank for absorption tower moisturizing through sludge pump.