CN205740642U - A kind of special purpose device of high nitrogenous organic wastewater deep denitrogenation process - Google Patents

A kind of special purpose device of high nitrogenous organic wastewater deep denitrogenation process Download PDF

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Publication number
CN205740642U
CN205740642U CN201620036063.7U CN201620036063U CN205740642U CN 205740642 U CN205740642 U CN 205740642U CN 201620036063 U CN201620036063 U CN 201620036063U CN 205740642 U CN205740642 U CN 205740642U
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nitrogen
organic wastewater
special
nitrogenous organic
advanced
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夏俊方
胡君杰
方小琴
周耀水
韩粒
肖龙博
陆魁
尚荣
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SHANGHAI JINGYU ENVIRONMENTAL ENGINEERING Co Ltd
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SHANGHAI JINGYU ENVIRONMENTAL ENGINEERING Co Ltd
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Abstract

The special purpose device of a kind of high nitrogenous organic wastewater deep denitrogenation process, including biochemistry pool, nano-filtration unit and advanced nitrogen reaction tank.High nitrogenous organic wastewater is delivered to biochemistry pool, carry out the processing procedure of nitrification and denitrification, remove ammonia nitrogen, total nitrogen and the Organic substance in waste water, then carried out retaining separation by NF membrane, remove the difficult degradation larger molecular organics of residual, finally carrying out advanced nitrogen, final outflow water total nitrogen is at below 40mg/L.This utility model uses NF membrane to retain the difficult degradation larger molecular organics of residual in bio-chemical effluent before advanced nitrogen, improves the utilization of carbon source rate of denitrification advanced nitrogen so that carbon source is adding less, and nitric efficiency is high, and energy consumption is low, and operating cost is low.

Description

A kind of special purpose device of high nitrogenous organic wastewater deep denitrogenation process
Technical field
This utility model belongs to technical field of waste water processing, the most just relates to a kind of high nitrogenous organic wastewater degree of depth and takes off The special purpose device of nitrogen technique, it is adaptable to percolate, industrial wastewater etc. have the sewage disposal of advanced nitrogen requirement, especially suitable In total nitrogen process up to standard.
Background technology
In recent years, along with becoming increasingly conspicuous of water pollution problems, the discharge standard of the nitrogen in sewage disposal requires more and more tighter Lattice.At present, the bio-chemical effluent of sewage treatment plant not only discharge capacity is big, and water outlet total nitrogen concentration is high, belongs to high nitrogenous organic waste Water.
High nitrogenous organic wastewater complicated component, such as percolate, coking chemical waste water etc..At present, conventional processing method is First carry out a biological disposal upon, remove most ammonia nitrogen and total nitrogen in water, then its bio-chemical effluent is carried out advanced treating.High nitrogenous Organic wastewater is after biochemical treatment, and the nitrogen form in water is mainly nitrate nitrogen.Traditionally, ion exchange, reverse osmosis and life The most removable nitrate nitrogen of thing denitrification, can be as the process means of advanced nitrogen, but ion exchange resin regeneration is difficult, run Costly, it is impossible to extensively apply;Reverse osmosis technology needs to carry out strict pretreatment, and operating cost is high, and limitation is big;And it is biological Denitrification process is under anoxic conditions, the denitrifying bacterium in system utilize carbon source as electron donor, by nitrate nitrogen and Asia Nitrate nitrogen changes into N2Discharging from water body, thus remove total nitrogen, this technique has that occupation of land is little, effluent quality good, anti- Impact load is strong, start the advantages such as fast, is a kind of cost-effective denitrification process.Therefore, biological denitrification technique is extensively used In advanced nitrogen.
The most common biological denitrification denitrogenation technology is waste water first to carry out the biological treatment of routine, then by water outlet Directly carrying out advanced nitrogen, this technology is it is generally required to additional a large amount of carbon source, and not only operating cost is high, and going out after advanced treating In water, COD is the highest, and reason is itself larger molecular organics containing some difficult degradations in the waste water after biochemical treatment, it is impossible to quilt Microorganism utilizes, and a large amount of carbon sources adding advanced nitrogen process supplementary are the most all utilized, and have portion of residual.Therefore, this makes The utilization of carbon source rate obtaining denitrification advanced nitrogen significantly reduces, and operating cost increases.
Utility model content
It is low that the purpose of this utility model is aiming at existing biological denitrification advanced nitrogen process technique utilization of carbon source rate Technological deficiency, it is provided that the special purpose device of a kind of high nitrogenous organic wastewater deep denitrogenation process, improves utilization of carbon source rate, reduces fortune Row cost.
Technical scheme
In order to realize above-mentioned technical purpose, a kind of high nitrogenous organic wastewater deep denitrogenation process, it is characterised in that it includes Following step:
The first step, sends high nitrogenous organic wastewater into biochemical treatment, carries out a biological disposal upon, obtain bio-chemical effluent.
Second step, the bio-chemical effluent first step obtained carries out nanofiltration process, retains the difficult degradation macromole of separating residual Organic substance, obtains nanofiltration water outlet and concentrated solution.
3rd step, the nanofiltration water outlet obtained by second step carries out denitrification advanced nitrogen process, obtains system water outlet.
Further, the biochemical treatment in the described first step is to use activated sludge process or biomembrance process, dense at room temperature, mud Degree is 3~20g/L, anoxia section below dissolved oxygen 0.5mg/L, aerobic section dissolved oxygen 0.5~5mg/L, and reflux ratio be 0.3~ Under conditions of 20, utilize microorganism to have degradation of ammonia nitrogen, total nitrogen and an organic function, remove most ammonia nitrogen in water, total Nitrogen and Organic substance.
Further, described second step mesophytization water outlet before carrying out nanofiltration process, need to regulate the pH value of waste water be 5.5~ 7.0, then carry out filtration treatment, remove the SS in water, colloid macromolecules material, finally operation pressure be 0.06~ Carry out nanofiltration process under conditions of 0.20Mpa, under the effect of NF membrane, difficult degradation larger molecular organics in water is retained Separate, obtain nanofiltration water outlet and concentrated solution.
Further, the advanced nitrogen in described 3rd step processes and uses biomembrance process or activated sludge process, in system Temperature 20~40 DEG C, DO≤0.3mg/L, supplementary carbon source C/N ratio are 2~5, and under conditions of reflux ratio 0.3~10, utilize micro- The biological denitrification that carried out by nitrate nitrogen remaining in water produces nitrogen spilling, makes water outlet total nitrogen be down to below 40mg/L.
Special purpose device for above-mentioned height nitrogenous organic wastewater advanced nitrogen, it is characterised in that: it includes biochemistry pool, nanofiltration Unit and advanced nitrogen reaction tank;
Former pond is connected with biochemistry pool, and equipped with intake pump on connecting line, the clear liquid outfan of biochemistry pool connects nanofiltration list Unit, the dope outfan of nano-filtration unit connects dope pond, and clear liquid outfan connects advanced nitrogen reaction tank, advanced nitrogen reaction tank Clear liquid outfan connect tank.
Further, being provided with stirring, aeration, reflux in described biochemistry pool, be used in microbial degradation water is organic Thing, ammonia nitrogen and total nitrogen.
Further, being provided with filter, high-pressure pump and membrane module in described nano-filtration unit, wherein, filter is with high-pressure pump even Connecing, high-pressure pump is connected with membrane module.
Further, described advanced nitrogen reaction tank is provided with reflux pump, and is configured with supplementary carbon source device.
Beneficial effect
The special purpose device of a kind of high nitrogenous organic wastewater deep denitrogenation process that this utility model provides, first nitrogenous to height Organic wastewater carries out biochemical treatment, after then using NF membrane that bio-chemical effluent is retained separation, finally carries out denitrification deep Degree denitrogenation, the total nitrogen of more than 95% in final removable waste water, within 40mg/L is down to by water outlet total nitrogen, and utilization of carbon source rate is high, Adding less, nitric efficiency is high, and energy consumption is low, and operating cost is low.
Accompanying drawing explanation
Accompanying drawing 1 is the process chart of this utility model embodiment.
Accompanying drawing 2 is equipment connecting relation schematic diagram in this utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, this utility model is described further.
Embodiment
As shown in Figure 2, the special purpose device of a kind of high nitrogenous organic wastewater advanced nitrogen, it includes biochemistry pool 2, nanofiltration Unit 3, advanced nitrogen reaction tank 4, former pond 1 is connected with biochemistry pool 2, equipped with intake pump 7 on connecting line;Biochemistry pool 2 clear Liquid outfan connects nano-filtration unit 3;The dope outfan of nano-filtration unit 3 connects dope pond 6, and clear liquid outfan connects advanced nitrogen Reaction tank 4;The clear liquid outfan of advanced nitrogen reaction tank 4 connects tank 5.
Described biochemistry pool 2 is provided with the Organic substance in stirring, aeration, reflux, beneficially microbial degradation water, ammonia nitrogen and Total nitrogen.
Being provided with filter 8, high-pressure pump 9 and membrane module 10 in described nano-filtration unit 3, wherein, filter 8 is with high-pressure pump 9 even Connecing, high-pressure pump 9 is connected with membrane module 10.
Described advanced nitrogen reaction tank 4 is provided with reflux pump 11, and is configured with supplementary carbon source device.
Above-mentioned special purpose device is utilized to carry out the technical process of high nitrogenous organic wastewater advanced nitrogen as follows:
The first step, pumps into biochemical system by high nitrogenous organic wastewater, uses activated sludge process or biomembrance process, room temperature, Sludge concentration is 3~20g/L, anoxia section dissolved oxygen at below 0.5mg/L, aerobic section dissolved oxygen 0.5~5mg/L condition Under, utilize microorganism to have degradation of ammonia nitrogen, total nitrogen and an organic function, remove most ammonia nitrogen in water, total nitrogen and organic Thing, obtains bio-chemical effluent.
Second step, sends above-mentioned bio-chemical effluent into nanofiltration system, and waste water, before entering NF membrane, need to regulate the pH of waste water =5.5~7.0, subsequently into filtration system, through filtering off except macromolecular substances such as the SS in water, colloids, finally in operation pressure Power is to enter under conditions of 0.06~0.20Mpa in NF membrane, waste water under the effect of NF membrane, the difficult degradation that will remain in water Larger molecular organics carries out retaining separation, respectively obtains nanofiltration water outlet and concentrated solution, and concentrated solution enters dope pond, treats at resource Reason.
3rd step, by above-mentioned nanofiltration water outlet send into advanced nitrogen system, according to C/N (i.e. COD/TN)=2~5 ratio to Supplementary carbon source in response system, control temperature 20~40 DEG C, DO≤0.3mg/L, under conditions of internal reflux ratio is 0.3~20, Utilize the microorganism in system that nitrate nitrogen remaining in water carries out denitrification and produce nitrogen spilling system, final outflow water total nitrogen Within being down to 40mg/L, and water outlet COD also reaches design standard.
This utility model first passes through biochemical process and removes the most ammonia nitrogen in high nitrogenous organic wastewater, total nitrogen and organic Thing, then uses nanofiltration that the larger molecular organics of the difficult for biological degradation remained in bio-chemical effluent carries out retaining separation, reduces water In COD, carry out advanced nitrogen finally by supplementary a small amount of carbon source, in final removable waste water, the total nitrogen of more than 95%, goes out Water total nitrogen is at below 40mg/L, and utilization of carbon source rate is high, and nitric efficiency is high, and energy consumption is low, and operating cost is low.

Claims (4)

1. the special purpose device of one kind high nitrogenous organic wastewater deep denitrogenation process, it is characterised in that: it includes biochemistry pool (2), receives Filter unit (3) and advanced nitrogen reaction tank (4);
Former pond (1) is connected with biochemistry pool (2), and equipped with intake pump (7) on connecting line, the clear liquid outfan of biochemistry pool (2) is even Connecing nano-filtration unit (3), the dope outfan of nano-filtration unit (3) connects dope pond (6), and clear liquid outfan connects advanced nitrogen reaction Pond (4), the clear liquid outfan of advanced nitrogen reaction tank (4) connects tank (5).
The special purpose device of a kind of high nitrogenous organic wastewater deep denitrogenation process the most as claimed in claim 1, it is characterised in that: institute State in biochemistry pool (2) and be provided with stirring, aeration, reflux, ammonia nitrogen, total nitrogen and the Organic substance in microbial degradation water.
The special purpose device of a kind of high nitrogenous organic wastewater deep denitrogenation process the most as claimed in claim 1, it is characterised in that: institute State and nano-filtration unit (3) is provided with filter (8), high-pressure pump (9) and membrane module (10), wherein, filter (8) and high-pressure pump (9) Connecting, high-pressure pump (9) is connected with membrane module (10).
The special purpose device of a kind of high nitrogenous organic wastewater deep denitrogenation process the most as claimed in claim 1, it is characterised in that: institute State and advanced nitrogen reaction tank (4) is provided with reflux pump (11), and be provided with supplementary carbon source device.
CN201620036063.7U 2016-01-14 2016-01-14 A kind of special purpose device of high nitrogenous organic wastewater deep denitrogenation process Active CN205740642U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105523691A (en) * 2016-01-14 2016-04-27 上海晶宇环境工程股份有限公司 High-nitrogen-content organic wastewater deep-denitrification process and device therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105523691A (en) * 2016-01-14 2016-04-27 上海晶宇环境工程股份有限公司 High-nitrogen-content organic wastewater deep-denitrification process and device therefor

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