CN205347110U - UF membrane filtration system for pickling mud leachate treatment - Google Patents

Abstract

The utility model belongs to the technical field of filtration liquid filters to be used, specifically disclose a UF membrane filtration system for pickling mud leachate treatment, including the running water water inlet, and respectively with running water water inlet pipe connection defoaming agent blending tank, hinder dirty agent blending tank, sour preparation jar, carbon source preparation jar, mix fluid reservoir and UF and wash jar, and with mix the denitrification jar that the fluid reservoir is connected, and the filtration liquid inlet of being connected with the equalizing basin, and equalizing basin, the nitrating pot is connected with the denitrification jar respectively, and with a UF washing jar UF membrane filtration component of being connected, reach respectively UF washing jar, UF circulating pump with UF membrane filtration component connection. The utility model discloses, carry out thorough mud -water separation through using external tubular milipore filter technique to biochemical system product water, make up organically with biochemical system and constitute external MBR technology, realize that mud dwell time and water conservancy dwell time's relation break away from to the throughput who improves biochemical system greatly accords with the ability with shocking resistance.

Description

A kind of UF membrane filtration system being applied to the process of pickling mud percolate

Technical field

This utility model belongs to percolate filtration application technical field, is specifically related to a kind of UF membrane filtration system being applied to the process of pickling mud percolate, and efficient, stable processes percolate, it is achieved environmental protection production requirement.

Background technology

At present, but without the processing method that an economic and technical is parallel after the generation of pickling mud, both at home and abroad frequently with method be solid landfill method, and containing substantial amounts of heavy metal in pickling mud, before pickling mud is carried out landfill disposal, must carry out solidifying stabilized treatment to it, conventional firming agent is by cement, Colophonium, glass, waterglass etc., wherein, cement is one of most commonly seen firming agent, cement solidification refers to and is mixed with ordinary cement by refuse, form the firming body with some strength, thus reducing the purpose of hazard component leaching rate in refuse, although cement solidification method is widely used, but, it is big to there is floor space in it, solidify the shortcoming that heavy metal of body long-time stability can not be guaranteed, for this problem, more external scholar's research finds: the suitable additive that is simultaneously introduced in cement solidification can improve solidification effect and reduce the dissolution rate of harmful substance, save cement consumption, and increase quick solidifying intensity, the alkaline systems such as cement, flyash mud are utilized such as AsavapisitS. etc., the stability making some heavy metal hydroxide reaches the state of the best, reduce the collaborative negatively influencing because the water to binder caused by the heavy dissolubility of pickling mud reacts, but, the research of more domestic scholars shows: the application of flyash makes copper bad stability in solidified cement body, ordinary cement adds xanthates and processes heavy metal sewage sludge, the leaching rate of heavy metal can be reduced.

Copper in China's pickling mud, nickel, the mass fraction that chromium etc. are increased one's knowledge is higher, can be used by some enterprises as raw material, in recent years, the research of domestic and international pickling sludge resource is concentrated mainly on heavy metal recovery technology and this two broad aspect of materialized technology, resource recovery technology for pickling mud adopts following methods: the acid-hatching of young eggs and ammonia leaching process, the acid-hatching of young eggs refers to sulphuric acid, the acid such as hydrochloric acid is as digestion agent, the method that the target components of solubility is extracted from pickling mud, smelting process and roasting leaching method, smelting process is mainly to reclaim copper, for the purpose of nickel, with coal, coke is fuel and reducing substances, iron ore, Copper Ores, the method that limestone etc. carry out producing for adjuvant, roasting leaching method utilizes the impurity in high-temperature roasting pretreating sludge, again with acid, the media such as water extract valuable metal in product of roasting, burn absorption method, refer on the basis that pickling sludge incineration is melted, the method that heavy metal in incineration slag is recycled, adopt this method and there is high treating effect, invest the advantages such as little, but, metal is leached by the temperature burned impact；Materialized technology, refers to and utilizes pickling mud to produce the process of construction material or other material as raw material or adjuvant.

But, in above-mentioned pickling sludge handling process, the problem how ubiquity pickling mud percolate processes, existing process filters, it processes thoroughly, not environmentally, it is impossible to filter the multiple harmful chemical component removed in percolate completely, if forced discharge, then cause great environmental pollution phenomenon, also do not reach environmental protection production requirement.

Based on the problems referred to above, this utility model provides a kind of and is applied to the UF membrane filtration system that pickling mud percolate processes.

Utility model content

Utility model purpose: the purpose of this utility model is to provide a kind of UF membrane filtration system being applied to the process of pickling mud percolate, its system structure design is reasonable, stable working state, UF membrane filtration module in real work, efficient, stable percolate is processed thoroughly of energy, reaches emission request.

Technical scheme: this utility model provides a kind of and is applied to the UF membrane filtration system that pickling mud percolate processes, including tap water water inlet, and it is connected defoamer blending tank with tap water water inlet conduit respectively, soil retardancy blending tank, acid preparation tank, carbon source preparation tank, mixed flow container and UF purge tank, and denitrification tank tank connected with mixed liquid, and the percolate inlet being connected with regulating reservoir, and regulating reservoir tank connected with denitrification respectively, nitrating pot, and clean tank connected UF film filtering element with UF, and the UF purge tank being connected with UF film filtering element respectively, UF circulating pump, wherein, UF purge tank is connected with UF circulating pump.

The technical program, described in be applied to pickling mud percolate process UF membrane filtration system, also include respectively with denitrification tank, nitrated tank connected nitrified effluent mouth.

The technical program, described in be applied to pickling mud percolate process UF membrane filtration system, also include and nitrated tank connected air compressor.

Compared with prior art, having the beneficial effects that of a kind of UF membrane filtration system being applied to the process of pickling mud percolate of the present utility model: 1, by application external pipe type ultrafiltration membrane technique, biochemical system is produced water and carry out mud-water separation thoroughly, external MBR technique is formed with biochemical system organic assembling, the relation realizing sludge retention time (SRT) and hydraulic detention time (HRT) departs from, improve biochemical system activated sludge concentration (15～40g/L), thus being greatly improved the disposal ability of biochemical system and shock resistance meets ability；2, on the sewage of the reply contour CODcr concentration of percolate, abandoning tradition must adopt the concept of anaerobism, the relation of the criteria pollutants such as accurate analysis CODcr, BOD5, NH3-N, TN, SS and difficulty in treatment, anoxia+aerobic process is adopted thoroughly to process, and utilize the nitrification liquid backflow of vast scale that former water is diluted, it is to avoid the high-concentration sewage impact load effect to biochemical system；3, high for ammonia nitrogen in leachate quality and total nitrogen pollutant index, the strengthening A/O biological denitrification process of Prepositive denitrification is adopted at biochemical system, on the one hand ammonia nitrogen and total nitrogen material are degraded so that it is guaranteed that such qualified in final outflow water in a large number, on the other hand overwhelming majority nitrogen class materials are completely converted as nitrogen, do not produce secondary pollution.

Accompanying drawing explanation

Fig. 1 is a kind of structural representation being applied to the UF membrane filtration system that pickling mud percolate processes of the present utility model；

Wherein, in figure, sequence number mark is as follows: 1-tap water water inlet, 2-percolate inlet, 3-defoamer blending tank, 4-soil retardancy blending tank, 5-acid preparation tank, 6-carbon source preparation tank, 7-mix flow container, 8-air compressor, 9-regulating reservoir, 10-denitrification tank, 11-nitrating pot, 12-UF purge tank, 13-UF circulating pump, 14-UF film filtering element, 15-UF purge tank, 16-nitrified effluent mouth.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, it is further elucidated with this utility model.

Embodiment

A kind of UF membrane filtration system being applied to the process of pickling mud percolate as shown in Figure 1, including tap water water inlet 1, and it is connected defoamer blending tank 3 with tap water water inlet 1 pipeline respectively, soil retardancy blending tank 4, acid preparation tank 5, carbon source preparation tank 6, mixed flow container 7 and UF purge tank 15, and the denitrification tank 10 being connected with mixed flow container 7, and the percolate inlet 2 being connected with regulating reservoir 9, and the regulating reservoir 9 being connected with denitrification tank 10 respectively, nitrating pot 11, and the UF film filtering element 14 being connected with UF purge tank 15, and the UF purge tank 12 being connected with UF film filtering element 14 respectively, UF circulating pump 13, wherein, UF purge tank 12 is connected with UF circulating pump 13.

It is preferred that, it is applied to the UF membrane filtration system that pickling mud percolate processes, also including the nitrified effluent mouth 16 being connected respectively with denitrification tank 10, nitrating pot 11, nitrification liquid enters regulating reservoir 9 through nitrified effluent mouth 16, it is achieved secondary carries out the operation of nitration treatment；It is applied to the UF membrane filtration system that pickling mud percolate processes, also includes the air compressor 8 being connected with nitrating pot 11, it is achieved nitrification and denitrification operation.

UF membrane filtration system of the present utility model, the ammonia nitrogen in percolate waste water, organic pollution can well effectively be removed by the denitrification+nitration processes of employing, and wherein the removal efficiency of ammonia nitrogen can reach more than 99%, and organic pollution removal efficiency reaches more than 98%.Whole system can whole year operation, and can guarantee that stablizing for the treatment of effect, the film of system ensures to reach more than 5 years service life, simultaneity factor have employed complete process monitoring design, and supporting it is provided with Membrane cleaning system, the operation that system can be steady in a long-term can be effectively ensured, simultaneously, the membrane component that the design adopts is rolled film, it has unit volume inner membrance specific surface area and greatly and is not susceptible to the advantage blocked, water treatment field is most widely used, owing to rolled film has bigger flow channels, so the speed of fouling membrane is greatly diminished, employing membrane filtration pattern is cross flow filter, namely filter and produce current direction with the concentrated solution flow direction not at grade, so can effectively reduce the pollutant pollution to film in filter process.

UF membrane filtration system of the present utility model, the pore size filter of the reverse-osmosis membrane element that reverse osmosis process adopts is 0.1nm, and aperture is about the 1/10 of nanofiltration membrane aperture, and organic particle and salt material are had higher removal effect.

UF membrane filtration system of the present utility model, 1, by application external pipe type ultrafiltration membrane technique, biochemical system is produced water and carry out mud-water separation thoroughly, external MBR technique is formed with biochemical system organic assembling, the relation realizing sludge retention time (SRT) and hydraulic detention time (HRT) departs from, improve biochemical system activated sludge concentration (15～40g/L), thus being greatly improved the disposal ability of biochemical system and shock resistance meets ability.2, on the sewage of the reply contour CODcr concentration of percolate, abandoning tradition must adopt the concept of anaerobism, the relation of the criteria pollutants such as accurate analysis CODcr, BOD5, NH3-N, TN, SS and difficulty in treatment, anoxia+aerobic process is adopted thoroughly to process, and utilize the nitrification liquid backflow of vast scale that former water is diluted, it is to avoid the high-concentration sewage impact load effect to biochemical system；3, high for ammonia nitrogen in leachate quality and total nitrogen pollutant index, the strengthening A/O biological denitrification process of Prepositive denitrification is adopted at biochemical system, on the one hand ammonia nitrogen and total nitrogen material are degraded so that it is guaranteed that such qualified in final outflow water in a large number, on the other hand overwhelming majority nitrogen class materials are completely converted as nitrogen, do not produce secondary pollution；4, utilize the condition of MBR system greater activity sludge concentration, improve the biochemical system volume elimination capacity to pollutant, thus obtaining bigger unit volume biochemistry quantity of heat production；Coupling system Insulation and heat exchange cooling system stably maintain the temperature adapted to needed for biochemical system runs, it is ensured that system is not having the situation next year four seasons stable operation of heating facility；5, in combinations with the present computer technology, by the on-line monitoring of on-the-spot multi-point and PLC programming Control, realize percolation liquid treating system and run the increasingly automated of control, film processing system can realize fully automatic operation below, management personnel have only to the man machine interface by being easily understood and realize the management of system is controlled, labor intensity is low, it is only necessary to the maintenance of everyday devices.

The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvement, these improvement also should be regarded as protection domain of the present utility model.

Claims (3)

1. one kind is applied to the UF membrane filtration system that pickling mud percolate processes, it is characterized in that: include tap water water inlet (1), and it is connected defoamer blending tank (3) with tap water water inlet (1) pipeline respectively, soil retardancy blending tank (4), acid preparation tank (5), carbon source preparation tank (6), mixed flow container (7) and UF purge tank (15), and the denitrification tank (10) being connected with mixed flow container (7), and the percolate inlet (2) being connected with regulating reservoir (9), and the regulating reservoir (9) being connected with denitrification tank (10) respectively, nitrating pot (11), and the UF film filtering element (14) being connected with UF purge tank (15), and the UF purge tank (12) being connected with UF film filtering element (14) respectively, UF circulating pump (13), wherein, UF purge tank (12) is connected with UF circulating pump (13).

2. a kind of UF membrane filtration system being applied to the process of pickling mud percolate according to claim 1, it is characterized in that: described in be applied to pickling mud percolate process UF membrane filtration system, also include the nitrified effluent mouth (16) being connected respectively with denitrification tank (10), nitrating pot (11).

3. a kind of UF membrane filtration system being applied to the process of pickling mud percolate according to claim 2, it is characterized in that: described in be applied to pickling mud percolate process UF membrane filtration system, also include the air compressor (8) being connected with nitrating pot (11).