CN205590517U

CN205590517U - Ozone - membrane bioreactor coking wastewater advanced treatment unit that pH control was adjusted

Info

Publication number: CN205590517U
Application number: CN201620362837.5U
Authority: CN
Inventors: 朱宁伟; 张文娟; 王斌科; 姜安平; 张景志
Original assignee: Beijing Sound Environmental Engineering Co Ltd; Beijing Epure International Water Co Ltd
Current assignee: Beijing Sound Environmental Engineering Co Ltd; Beijing Epure International Water Co Ltd
Priority date: 2016-04-26
Filing date: 2016-04-26
Publication date: 2016-09-21
Anticipated expiration: 2026-04-26

Abstract

The utility model discloses an ozone that pH control was adjusted membrane bioreactor coking wastewater advanced treatment unit, include: sand filtration tank is equipped with coking wastewater entry and delivery port, and the delivery port is connected with the ozone oxidation tower through buffer pool and the pipeline that is equipped with the centrifugal pump, be equipped with gas distribution device and the ultraviolet fluorescent tube above the gas distribution device bottom in the ozone oxidation tower, the gas distribution device is connected with the outside ozone generator who sets up of ozone oxidation tower, and the outlet pipe and the acid -base regulation jar of ozone oxidation tower are connected, the acid -base is adjusted the jar and is connected with the peristaltic pump, and the outlet pipe that the jar was adjusted to the acid -base is connected to integrated MBR pond through the water pump, the outlet pipe in integration MBR pond is connected with the product water tank through being equipped with the pipeline of producing the water pump, wash the play water piping connection of water tank through the pipeline that is equipped with anti - scavenging pump and the MBR pond that unifies. Is the device because with ozone membrane bioreactor combines, has improved the utilization efficiency of ozone, saves the ozone cost, improves coking wastewater's advanced treatment effect.

Description

A kind of ozone-membrane bioreactor coking wastewater deep treatment device of pH control and regulation

Technical field

This utility model relates to field of waste water treatment, and the ozone-membrane bioreactor particularly relating to a kind of pH control and regulation is burnt Change advanced waste treatment apparatus.

Background technology

Coking chemical waste water is the industrial wastewater that coking industry produces in High T-emperature Carbonization, gas purification and side-product removal process. Such waste water does not contain only the inorganic pollutions such as the ammonia nitrogen of high concentration, cyanide, rhodanide, but also containing some phenols, The organic pollutions such as pyridine, quinoline, polycyclic aromatic hydrocarbon, are a kind of typical poisonous and harmful and the industrial wastewater of difficult for biological degradation. The process technique that coking chemical waste water is conventional at present is dephenolize ammonia still process pretreatment+biochemistry two stage treatment+coagulation-settlement process.Use this work Although skill can remove partial organic substances, but owing to waste water can be biochemical poor, the content of organics of difficult for biological degradation is higher, water outlet COD The highest with ammonia nitrogen concentration, effluent quality is unstable, it is difficult to reach discharging standards.

In order to improve the treatment effect of coking chemical waste water, reducing the coking chemical waste water harm to environment, coking wastewater deep treatment is urgently Solve.Bi-membrane method is conventional advanced treatment process of coking waste water, and effluent quality is good, but it is high to there is also processing cost, residue The reluctant problem of dense water.

The oxidation-reduction potential of ozone is 2.07V, can aoxidize the organic pollution of multiple difficult degradation in water, react with Organic substance Speed is fast, does not produce secondary pollution, additionally it is possible to play decolouring, the effect of deodorization.The Oxidation of Pre-Ozonation on Organic Matter includes two Individual aspect: on the one hand ozone is directly to organic Oxidation, on the other hand ozone decomposes through chain reaction raw at self Become the hydroxyl radical free radical (OH) that oxidability is higher.Hydroxyl radical free radical further aoxidizes hardly degraded organic substance.Research table Bright after peroxidating, not only the organic concentration in sewage decreases, and the biodegradability of organic matter of water outlet obtains necessarily The raising of degree, provides feasible guarantee for follow-up secondary biochemical treatment.

In water treatment technology, individually use ozone Oxidation Treatment sewage relatively costly, need to consume substantial amounts of ozone could incite somebody to action Organic substance permineralization, general ozone oxidation can combine with biological treatment use.Membrane bioreactor (Membrane Bioreactor, MBR) it is that Novel sewage biological treatment and membrane separation technique combined processes technique, there is occupation of land face Long-pending little, effluent quality is good, be easy to advantages such as automatically controlling.At present, MBR technique is used widely in sewage disposal. Along with country's raising to coking wastewater effluent water standard, ozone and MBR technology are so more and more that to be applied at sewage deep In reason.Ozone oxidation and MBR are combined, form ozone-MBR group technology and be conducive to having complementary advantages, reduce ozone-depleting, Save processing cost, and the treatment effect of system can be improved.Still do not have ozone-MBR group technology that coking chemical waste water is carried out at present Advanced treating.

Utility model content

Based on the problem existing for above-mentioned prior art, this utility model provides a kind of pH ozone-membrane bioreaction of control and regulation Answer device coking wastewater deep treatment device, can realize combining ozone and MBR coking chemical waste water carries out advanced treating, promote Jiao Change the advanced treating effect of waste water.

For solving above-mentioned technical problem, this utility model provides the ozone-membrane bioreactor coking of a kind of pH control and regulation to give up Water depth processing means, processing object is the mixed sinking pool effluent after coking chemical waste water routine biochemistry processes, including: sandfiltration pot, slow Rush pond, centrifugal pump, ozone oxidation tower, ozonator, acid-alkali accommodation tank, peristaltic pump, integration MBR pond, produce water tank With cleaning water tank；Wherein,

Described sandfiltration pot is provided with water inlet and outlet, and described outlet is through described Buffer Pool and the pipeline and the institute that are provided with centrifugal pump State ozone oxidation tower to connect；

Described ozone oxidation tower inner bottom part is provided with distribution device and is in the ultraviolet lamp tube above distribution device, described distribution device The ozonator that arrange outside with described ozone oxidation tower is connected, the outlet pipe of described ozone oxidation tower and described acid-alkali accommodation Tank connects；

Described acid-alkali accommodation tank connects described peristaltic pump, and the outlet pipe pump by centrifugation of described regulation tank is connected to described integration MBR pond；

The outlet pipe in described integration MBR pond is connected with described product water tank through being provided with the pipeline producing water pump；

Described cleaning water tank connects through the outlet pipe being provided with the anti-pipeline and described integrated MBR pond cleaning pump.

The beneficial effects of the utility model are: this advanced treatment apparatus by sandfiltration pot, Buffer Pool, centrifugal pump, ozone oxidation tower, Ozonator, acid-alkali accommodation tank, peristaltic pump, integration MBR pond, product water tank and cleaning water tank organically combine into coking and give up The advanced treatment apparatus of water, the ozone strong oxidizing ability making full use of ozone oxidation tower is made a return journey except the Organic substance in coking chemical waste water, Not merely with the direct oxidation effect organics removal of Pre-Ozonation on Organic Matter, and change part in waste water by ozone oxidation The biodegradability of organic matter of difficult degradation, this partial organic substances is further by the membrane bioreactor in follow-up integrated MBR pond Remove, improve the utilization ratio of ozone, save ozone cost, improve system treatment effect；This processing means consider into The impact of water acid-base value, by arranging acid-alkali accommodation tank before integration MBR pond, improves the new of integration MBR pond microorganism Old metabolism environment, strengthens this processing means range of application in Practical Project；Use integration MBR pond floor space little, Operation can be realized and realize automatization, be particularly suitable for the short or limited sewage treatment plant in some soils and carry out the upgrading of technique.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme of this utility model embodiment, required use in embodiment being described below Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only embodiments more of the present utility model, From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings Obtain other accompanying drawings.

The advanced treatment apparatus schematic diagram that Fig. 1 provides for this utility model embodiment；

In Fig. 1: 1-sandfiltration pot；2-Buffer Pool；3-centrifugal pump；4-ozone oxidation tower；5-ozonator；6-soda acid is adjusted Joint tank；7-peristaltic pump；8-integration MBR pond；9-produces water tank；10-cleans water tank；

The advanced treatment apparatus that Fig. 2 provides for this utility model embodiment removal effect figure to coking wastewater deep treatment COD.

Detailed description of the invention

Below the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described enforcement Example is only a part of embodiment of this utility model rather than whole embodiments.Based on embodiment of the present utility model, this The every other embodiment that field those of ordinary skill is obtained under not making creative work premise, broadly falls into this practicality Novel protection domain.

With specific embodiment, advanced treatment apparatus of the present utility model is described further below in conjunction with the accompanying drawings.

As it is shown in figure 1, ozone-membrane bioreactor coking chemical waste water that this utility model embodiment provides a kind of pH control and regulation is deep Degree processing means, the mixed sinking pool effluent after coking chemical waste water routine biochemistry processes, including: sandfiltration pot, Buffer Pool, centrifugal Pump, ozone oxidation tower, ozonator, acid-alkali accommodation tank, peristaltic pump, integration MBR pond, product water tank and cleaning water tank； Wherein, sandfiltration pot uses fiberglass sandfiltration pot；

Described sandfiltration pot is provided with coking chemical waste water entrance and outlet, and described outlet is through described Buffer Pool and the pipe being provided with centrifugal pump Road is connected with described ozone oxidation tower；

Described acid-alkali accommodation tank connects described peristaltic pump, and the outlet pipe pump by centrifugation of described acid-alkali accommodation tank is connected to described one Body MBR pond；

In above-mentioned advanced treatment apparatus, described integration MBR pond be by be separated out in a cell body anoxic pond that is sequentially communicated and Membrane cisterna, is provided with agitating device in described anoxic pond, be provided with submerged hollow fiber hyperfiltration membrane assembly, described film in described membrane cisterna Pond is provided with the reflux pipe being back to described anoxic pond.

In above-mentioned advanced treatment apparatus, acid-alkali accommodation tank uses the regulation tank being provided with soda acid throwing device.

In above-mentioned advanced treatment apparatus, described product water pump uses top to be vacuum tank, and bottom is that the vacuum product water of centrifugal pump is centrifuged Pump.

In above-mentioned advanced treatment apparatus, ultraviolet lamp tube is set in ozone oxidation tower, uses uviol lamp to carry out photochemical catalytic oxidation, Improve oxidation effectiveness and the ozone utilization rate of ozone.Acid-alkali accommodation tank is set between ozone oxidation tower and MBR pond, makes ozone The ozone decomposed of residual in oxidizing tower water outlet, prevents ozone from entering in follow-up integrated MBR pond, impacts microorganism. Acid-alkali accommodation tank arranges soda acid throwing device, it is ensured that enter the water pH value in integration MBR pond in the range of 6～9.? Vacuum tank is set between the MBR membrane module outlet pipe in integration MBR pond and centrifugal pump, and makes vacuum by producing the suction of water centrifugal pump Tank keeps stable negative pressure, realizes stably producing water by siphonage, and this mode simple and stable is reliable, it is to avoid centrifugal pump because of The gas leakage such as pipeline valve produces idle running and does not inhales the problem such as water or negative pressure shakiness.

In above-mentioned advanced treatment apparatus, sandfiltration pot preferably employs fiberglass sandfiltration pot, is used for removing coking chemical waste water and mixes sinking pool effluent In partial suspended thing, water does not has when ensureing ozone oxidation the interference of particulate matter；Ozonator is using purity oxygen as former material Material carries out ozone to be prepared；Efficient ozone oxidizing tower is the place of ozone oxidation hardly degraded organic substance, in order to improve ozone oxidation Effect, the present invention arranges ultraviolet lamp tube in oxidizing tower, uses photochemical catalytic oxidation to obtain method and improves oxidability and the effect of ozone Rate, the water outlet of ozone oxidation tower enters acid-alkali accommodation tank；Acid-alkali accommodation tank is located between ozone oxidation tower and integration MBR pond, The effect of acid-alkali accommodation tank includes two aspects, and one is regulation integration MBR pond water inlet pH value, burnt during production run It is relatively low that change waste water mixes sinking pool effluent pH sometimes, and acidity is higher, also can have follow-up integrated MBR pond microbial activity and press down Making use, affect the treatment effect of MBR, acid-alkali accommodation tank can use the regulation tank being configured with soda acid throwing device, can basis Influent quality feature regulates water inlet pH value in time, ensures follow-up integration MBR pond microbial activity；Two is to reduce ozone pair The impact of microorganism, the water of mistake treated by ozone can contain certain density ozone, although concentration is the highest, but ozone oxidation is electric Position is high, and oxidability is strong, can also have a certain impact microorganism in follow-up integrated MBR pond；By being provided with soda acid Regulation tank, reduces the ozone effect to microbiological effect of ozone oxidation residual, can be by unstable ozone at acid-alkali accommodation tank Resolving into oxygen in holding process voluntarily, the water of acid-alkali accommodation tank is drawn to integration MBR pond through pumping；Integration MBR Chi Bao Include: anoxic pond and membrane cisterna, anoxic pond arranges agitating device, membrane cisterna arranges submerged hollow fiber hyperfiltration membrane assembly.Film Aeration perforated pipe is installed in the bottom of assembly, carries out blast aeration, controls fouling membrane, and membrane module top connects vacuum tank, vacuum Pot bottom connects centrifugal pump；The clear water of 2/3 is injected in integration MBR pond in advance in vacuum tank before producing water, and vacuum tank is close Envelope, water centrifugal pump is produced in vacuum tank connection, then by the water of centrifugal pump extracting vacuum tank, makes to produce in vacuum tank negative pressure.? Under the effect of atmospheric pressure, the water in membrane cisterna mixed liquor through ultrafilter membrane enter pipe influx to vacuum tank, in the effect of centrifugal pump Water is produced in lower realization continuously, enters into product water tank；Integration side, MBR pond arranges cleaning water tank, cleans water tank and inserts configuration one Determine the sodium hypochlorite cleanout fluid of concentration, by the anti-pump that cleans, hollow fiber ultrafiltration membrane is carried out medicament cleaning；Integration MBR pond Produce water, aeration and membrane module cleaning to be all controlled by automatic control system, produce the water cycle and product discharge can basis Practical situation needs adjustable.

In conjunction with Fig. 1, the technological process of advanced treatment apparatus Treatment of Wastewater in Coking of the present utility model is particularly as follows: coking chemical waste water mixes Sinking pool effluent is pumped through submersible sewage pump and is filtered to sandfiltration pot, mainly removes float a small amount of in water, it is to avoid particle pair The impact of follow-up ozone oxidation, ensures ozone oxidation usefulness；Sandfiltration pot water outlet enters Buffer Pool, the most again through transport pump the most extremely Ozone oxidation tower, the ozone produced with ozonator is fully contacted.The hydraulic detention time of ozone oxidation is 0.9～1.8 little Time.Ozone oxidation tower water outlet enters regulation tank, and the hydraulic detention time of regulation tank is 1～1.5 hour.Regulation tank is installed PH meter, is monitored the Acidity of Aikalinity of water inlet.When pH≤5.5, in regulation tank, add sodium hydroxide by peristaltic pump molten Liquid.When pH >=8.5, stop adding (general coking chemical waste water mixes sinking pool effluent for acidity).Regulation tank water outlet is again through pump It is pumped to MBR anoxic pond；MBR anoxic pond denitrifying bacteria, the nitrate reduction in membrane cisterna backflow mixed liquor is become nitrogen, and Consume partial organic substances.Remaining can not dropped by aerobic bacteria further in membrane cisterna by biochemical Organic substance by what denitrifying bacterium utilized Solve；Finally, active sludge intermixture is formed by membrance separation and produces water and be drained into product water tank, produces water pump and takes out and stop ratio for 8min:2 min；After running a period of time, work as flux depression, when transmembrane pressure rises to 20kPa, open flushing water pump, will clean The sodium hypochlorite cleanout fluid inverse injection of water tank is to membrane module.

Embodiment

Using advanced treatment apparatus of the present utility model to process Tangshan coal chemical industry enterprises and mix sinking pool effluent, device treatment scale is 1～2m³/ h, device average influent COD 149mg/L, ammonia nitrogen 2.49mg/L, pH 5.2, colourity 50 times.Water outlet COD Removal effect as in figure 2 it is shown, the removal effect of colourity is preferable.Result shows, average water outlet COD 78mg/L, ammonia nitrogen 0.81mg/L, pH 7.2, colourity 10 times, water outlet reaches " coking chemistry emission of industrial pollutants standard " (GB16171-2012) Discharging standards.Through adjusting, ozone Oxidation Treatment cost is 0.96 yuan/m³, MBR unit processing cost is 0.8 yuan/m³, The total processing cost of ozone MBR is 1.76 yuan/m³.Relatively with double membrane process (ultrafiltration+nanofiltration), processing cost is relatively low, and does not has Dense water produces.

The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model does not limit to In this, any those familiar with the art in the technical scope that this utility model discloses, the change that can readily occur in Change or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with The protection domain of claims is as the criterion.

Claims

1. ozone-membrane bioreactor coking wastewater deep treatment the device of pH control and regulation, it is characterised in that including: Sandfiltration pot, Buffer Pool, centrifugal pump, ozone oxidation tower, ozonator, acid-alkali accommodation tank, peristaltic pump, integration MBR Pond, product water tank and cleaning water tank；Wherein,

The ozone of a kind of pH the most according to claim 1 control and regulation-membrane bioreactor coking wastewater deep treatment dress Put, it is characterised in that described integration MBR pond is by being separated out the anoxic pond and membrane cisterna being sequentially communicated, institute in a cell body It is provided with agitating device in stating anoxic pond, in described membrane cisterna, is provided with submerged hollow fiber hyperfiltration membrane assembly, described immersion hollow Aeration perforated pipe is installed in the bottom of cellulosic ultrafiltration membrane module, and the aerator arranged with outside is connected, and described membrane cisterna is provided with and is back to The reflux pipe of described anoxic pond.

Ozone-membrane bioreactor the coking wastewater deep treatment of a kind of pH the most according to claim 1 and 2 control and regulation Device, it is characterised in that described regulation tank uses the regulation tank being provided with soda acid throwing device.

Ozone-membrane bioreactor the coking wastewater deep treatment of a kind of pH the most according to claim 1 and 2 control and regulation Device, it is characterised in that described product water pump uses top to be vacuum tank, bottom is that the vacuum of centrifugal pump produces water centrifugal pump.