CN105084675A - Fine and intelligent biological oxygen mixing reaction bed and wastewater biochemical treatment process using same - Google Patents
Fine and intelligent biological oxygen mixing reaction bed and wastewater biochemical treatment process using same Download PDFInfo
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Abstract
The invention provides a fine and intelligent biological oxygen mixing reaction bed and a wastewater biochemical treatment process using the same. The fine and intelligent biological oxygen mixing reaction bed comprises a main reaction system and an auxiliary system, wherein the main reaction system comprises a high-load coal oxidation system and a low-load nitrification system; the high-load coal oxidation system comprises a synchronization area, a denitrification area and an oxygen mixing area I; the low-load nitrification system comprises a biological selection area and an oxygen mixing area II; the synchronization area, the denitrification area, the oxygen mixing area I, the biological selection area and the oxygen mixing area II are communicated in sequence; a water inlet is formed in the synchronization area; and a water outlet is formed in the oxygen mixing area II. The wastewater biochemical treatment process can be used for effectively purifying industrial wastewater, has good treatment effects especially on toxic industrial wastewater difficult to degrade, and is novel, efficient and resistant to impact.
Description
Technical field
The present invention relates to technical field of waste water processing, especially relate to the biochemical treatment process for wastewater that a kind of meticulous intelligent biological mixes oxygen reaction bed and uses it.
Background technology
Biochemical processing process is one of the most economical effective means processing waste water especially trade effluent at present, its Major Difficulties is that in waste water, hazardous and noxious substances concentration is high, a lot of composition is the composition of synthetic, nature lacks corresponding efficient degradation microflora, these are all cause useless Organic substance in water to be degraded by microorganisms incomplete reason, for poisonous used water difficult to degradate, as gas chemical industry's waste water, petrochemical wastewater, coal chemical industrial waste water, Fine Chemistry Wastewater, agricultural chemicals waste water, dyeing waste water etc., common process capacity of resisting impact load is poor, system cloud gray model is unstable, effluent quality is poor.
Summary of the invention
The object of the invention is to the biochemical treatment process for wastewater that a kind of novel meticulous intelligent biological of design mixes oxygen reaction bed and uses it, solve the problem.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of meticulous intelligent biological mixes oxygen reaction bed, comprises main reaction system and subsystem;
Described main reaction system comprises high loading oxidation of coal system and underload nitrification; Described high loading oxidation of coal system comprises synchronization zone, denitrification zone and Hun Yang mono-district; Described underload nitrification comprises biological selecting area and Hun Yang bis-district; Described synchronization zone, described denitrification zone, described Hun Yang mono-district, described biological selecting area are communicated with successively with described Hun Yang bis-district, are provided with water-in in described synchronization zone, are provided with water outlet in described Hun Yang bis-district;
Described subsystem: comprise Intelligent central Logical Supervisory Control and executive system;
Also comprise the accurate gas distribution system in synchronization zone be arranged in described synchronization zone, synchronization zone stirring system, synchronization zone dissolved oxygen/ORP/PH/ temperature online supervisory system, synchronization zone compound dosing system and synchronization zone intelligence Index Logic early warning system;
Also comprise the denitrification zone stirring system be arranged in described denitrification zone, denitrification zone dissolved oxygen/ORP/PH/ temperature online supervisory system and Intelligence Feedback supervisory system;
Also comprise the accurate gas distribution system in Hun Yang mono-district be arranged in described Hun Yang mono-district, Hun Yang mono-district stirring system, Hun Yang mono-district dissolved oxygen/ORP/PH/ temperature online supervisory system and intelligent dissolved oxygen and stirring intensity assignment logic system;
Also comprise the biological selecting area stirring system be arranged in described biological selecting area, biological selecting area compound dosing system and intelligent flow supervisory system;
Also comprise the accurate gas distribution system in Hun Yang bis-district be arranged in Hun Yang bis-district, Hun Yang bis-district stirring system, Hun Yang bis-district dissolved oxygen/ORP/PH/ temperature online supervisory system, intelligent dissolved oxygen and stirring intensity assignment logic system and effective constant liquid level outlet system;
Also comprise the vast scale recycle system and mixed-liquor return system;
Import and the outlet of the described vast scale recycle system are communicated to described Hun Yang mono-district and described synchronization zone respectively; Import and the outlet of described mixed-liquor return system are communicated to described Hun Yang bis-district and described biological selecting area respectively; Described water outlet is communicated with described Hun Yang mono-district by described effective constant liquid level outlet system.
Described synchronization zone stirring system, described denitrification zone stirring system, described Hun Yang mono-district's stirring system and described biological selecting area stirring system are respectively symmetrically arranged a pair; Described Hun Yang bis-district stirring system is symmetrically arranged two right.
Described synchronization zone stirring system, described denitrification zone stirring system, described Hun Yang mono-district stirring system, described biological selecting area stirring system and described Hun Yang bis-district stirring system are variable speed stirring system.
Use described meticulous intelligent biological to mix a biochemical treatment process for wastewater for oxygen reaction bed, comprise step as follows:
The first step, the mixed oxygen stage:
Described water-in starts water inlet, opens the described vast scale recycle system and described mixed-liquor return system; And open described synchronization zone stirring system, described denitrification zone stirring system, described Hun Yang mono-district stirring system, described biological selecting area stirring system, described Hun Yang bis-district stirring system, the accurate gas distribution system in described synchronization zone, the accurate gas distribution system of the accurate gas distribution system in described Hun Yang mono-district and described Hun Yang bis-district, water inlet is stirred and is mixed into oxygen;
Described synchronization zone maintains dissolved oxygen 0.26mg-0.30mg/L, described denitrification zone maintains dissolved oxygen 0mg-0.1mg//L, described Hun Yang mono-district maintains dissolved oxygen 1-2mg/L, and described biological selecting area maintains dissolved oxygen 0mg-0.1mg/L, and described Hun Yang bis-district maintains dissolved oxygen 0.3-5mg/L;
Described Intelligent central Logical Supervisory Control and executive system control described synchronization zone compound dosing system and described biological selecting area compound dosing system adds compound respectively in described synchronization zone and described biological selecting area;
Second step, precipitation strains the water stage:
Described water-in stops water inlet, closes described Hun Yang bis-district's stirring system and the accurate gas distribution system in described Hun Yang bis-district;
Described synchronization zone maintains dissolved oxygen 0.26mg-0.30mg/L, described denitrification zone maintains dissolved oxygen 0mg-0.1mg//L, described Hun Yang mono-district maintains dissolved oxygen 1-2mg/L, and described biological selecting area maintains dissolved oxygen 0mg-0.1mg//L, and described Hun Yang bis-district maintains dissolved oxygen 0mg-0.1mg//L;
Described Hun Yang bis-district starts precipitation; Start after precipitation to strain water, the water outlet after process is flowed out from described water outlet;
After straining water, enter the first step, circular flow.
The backwater amount of the described vast scale recycle system is 10-30 times of the flooding quantity of described water-in; The backwater amount of described mixed-liquor return system is 0.2-3 times of the flooding quantity of described water-in.
The backwater amount of the described vast scale recycle system is 20 times of the flooding quantity of described water-in; The backwater amount of described mixed-liquor return system is 2 times of the flooding quantity of described water-in.
The first step is mixed in the oxygen stage, and described synchronization zone maintains dissolved oxygen 0.28mg/L;
Second step precipitation is strained in the water stage, and described synchronization zone also maintains dissolved oxygen 0.28mg/L.
Described compound is SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea.
Described compound is that two or more in SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea mix.
ORP in the present invention, refers to redox potential, is called for short ORP (being the abbreviation of English Oxidation-ReductionPotential) or Eh.ORP is as a composite target of medium (comprising soil, natural water, substratum etc.) envrionment conditions, and continued to use for a long time, it characterizes the relative extent of medium oxidizing property or reductibility.
PH in the present invention, refers to hydrogen ionexponent (English hydrogenionconcentration), refers to the ratio of hydrionic sum and total amount of substance in solution; Its numerical value is commonly called as " pH value ".For representing the numerical value of solution acidic or degree of alkalinity, i.e. the negative value of the denary logarithm of contained hydrogen ion concentration.
The so-called vast scale recycle system of the present invention, refers to that internal circulating load is greater than more than 10 times of flooding quantity.
The invention discloses a kind of biochemical processing process processing poisonous and hardly-degradable wastewater, comprise main reaction system and subsystem.
Main reaction system:
Main reaction region mainly comprises the high loading oxidation of coal system of a systemic circulation ratio and the underload nitrification in a plug-flow district.High loading oxidation of coal system mainly comprises: synchronization zone, denitrification zone, Hun Yang mono-district.Underload nitrification mainly comprises: biological selecting area, Hun Yang bis-district.
Subsystem:
Synchronization zone: accurately gas distribution system, variable speed stirring system, dissolved oxygen/ORP/PH/ temperature online supervisory system, intelligent Index Logic early warning system
Denitrification zone: variable speed stirring system, dissolved oxygen/ORP/PH/ temperature online supervisory system, Intelligence Feedback supervisory system
Hun Yang mono-district: accurately gas distribution system, variable speed stirring system, dissolved oxygen/ORP/PH/ temperature online supervisory system, the vast scale recycle system, intelligent dissolved oxygen and stirring intensity assignment logic system
Biological selecting area: variable speed stirring system, compound dosing system, intelligent flow supervisory system
Hun Yang bis-district: accurately gas distribution system, variable speed stirring system, dissolved oxygen/ORP/PH/ temperature online supervisory system, mixed-liquor return system, intelligent dissolved oxygen and stirring intensity assignment logic system, effective constant liquid level outlet system
Intelligent central Logical Supervisory Control and executive system
Compound mainly forms: one or more in the medicaments such as SODIUMNITRATE, ammonium chloride, Sodium Nitrite, urea, SODIUM PHOSPHATE, MONOBASIC, sodium carbonate are composite to be formed.
Primary operating mode:
Waste water periodically enters high loading oxidation of coal system through lift pump, high loading oxidation of coal system is the bio-reactor of a vast scale backflow, wherein comprise three districts: synchronization zone, denitrification zone, Hun Yang mono-district, according to height and the temporal relation subregion of dissolved oxygen, synchronization zone dissolved oxygen controls at below 0.28mg/L, denitrification zone dissolved oxygen is at 0mg/L, Hun Yang mono-district dissolved oxygen controls at 1-3mg/L, from Hun Yang mono-district vast scale mixed-liquor return to synchronization zone, form vast scale circulating ring, water is carried out to the dilution of 10 times to about 30 times, toxic substance in homogenizing water.Synchronization zone: under the prerequisite adding compound, by synchronous nitration and denitrification mechanism, remove most of organism in waste water, good condition is created to follow-up degraded, denitrification zone mainly utilizes the compound nitrogen source in medicament, denitrification and nitrosification metabolic mechanism is utilized to carry out open loop chain rupture to the hard-degraded substance in waste water, improve the biodegradability of waste water, Hun Yang mono-district is that the main COD of system removes district, mainly make good use of the metabolism of oxygen animalcule, further metabolism will be carried out through synchronous and the pretreated organism of denitrification, in waste water, most of organism is effectively removed in this pond, for subsequent disposal creates good load circumstance and component environment.
Enter follow-up underload nitrification zone from the water outlet in high loading oxidation of coal district, underload nitrification zone controls by periodically becoming dissolved oxygen, and each cycle is divided into 2 stages: mixed oxygen section, sedimentation and drawing section.
Mixed oxygen section: when accurately controlling the gas blower oxygen supply in accurate gas distribution system, by adjusting the air quantity of influent load and gas blower, dissolved oxygen in accurate control waste water, realize meticulous mixed oxygen, the object of mixed oxygen realizes dissolved oxygen at 0.3-5mg/L, controllable precise, under the katalysis of compound, in waste water, difficult degradation heterocyclic material realizes effectively degraded, and the ammonia nitrogen thoroughly removed in waste water and total nitrogen.
Sedimentation and drawing section: when closing gas blower and stirring system, mud-water separation, discharges system by proprietary wetting system of straining by supernatant liquor, system enters next cycle circulation.
The core mechanism of mixed oxygen: under the prerequisite accurately controlling dissolved oxygen, by creating different dissolved oxygen environment in the different time points of one-period, time series is created the mixing of oxygen, meet the demand of different microorganisms to oxygen, under the Synergistic degradation effect of compound, realize single microorganism reaction bed to degrade to organic maximization, meet single waste water different steps to the demand of biochemical dissolved oxygen.
The profile of this patent and large I adjust according to the difference of process water yield scale, but internal structure and principle constant.
Beneficial effect of the present invention can be summarized as follows:
This patent can purified industrial waste water effectively, and particularly having good treatment effect to poisonous and hardly-degradable wastewater, is a kind of new and effective shock proof biochemical treatment process for wastewater.
Accompanying drawing explanation
Fig. 1 is that in the present invention, meticulous intelligent biological mixes the structural representation that oxygen reaction bed overlooks direction.
Fig. 2 is the structural representation that in the present invention, meticulous intelligent biological mixes oxygen reaction bed side-looking direction.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The meticulous intelligent biological of one as depicted in figs. 1 and 2 mixes oxygen reaction bed, comprises main reaction system and subsystem; Described main reaction system comprises high loading oxidation of coal system and underload nitrification; Described high loading oxidation of coal system comprises synchronization zone 1, denitrification zone 2 and Hun Yang mono-district 3; Described underload nitrification comprises biological selecting area 4 and Hun Yang bis-district 5; Described synchronization zone 1, described denitrification zone 2, described Hun Yang mono-district 3, described biological selecting area 4 are communicated with successively with described Hun Yang bis-district 5, are provided with water-in 19 in described synchronization zone 1, are provided with water outlet 59 in described Hun Yang bis-district 5;
Described subsystem: comprise Intelligent central Logical Supervisory Control and executive system 6; Also comprise the accurate gas distribution system 11 in synchronization zone be arranged in described synchronization zone 1, synchronization zone stirring system 12, synchronization zone dissolved oxygen/ORP/PH/ temperature online supervisory system 13, synchronization zone compound dosing system 15 and synchronization zone intelligence Index Logic early warning system 14; Also comprise the denitrification zone stirring system 22 be arranged in described denitrification zone 2, denitrification zone dissolved oxygen/ORP/PH/ temperature online supervisory system and Intelligence Feedback supervisory system 23; Also comprise the accurate gas distribution system in Hun Yang mono-district 31 be arranged in described Hun Yang mono-district 3, Hun Yang mono-district stirring system 32, Hun Yang mono-district dissolved oxygen/ORP/PH/ temperature online supervisory system 33 and intelligent dissolved oxygen and stirring intensity assignment logic system 5434; Also comprise the biological selecting area stirring system 42 be arranged in described biological selecting area 4, biological selecting area compound dosing system 43 and intelligent flow supervisory system 44; Also comprise the accurate gas distribution system in Hun Yang bis-district 51 be arranged in Hun Yang bis-district 5, Hun Yang bis-district stirring system 52, Hun Yang bis-district dissolved oxygen/ORP/PH/ temperature online supervisory system 53, intelligent dissolved oxygen and stirring intensity assignment logic system 54 and effective constant liquid level outlet system 56; Also comprise the vast scale recycle system 35 and mixed-liquor return system 55;
Import and the outlet of the described vast scale recycle system 35 are communicated to described Hun Yang mono-district 3 and described synchronization zone 1 respectively; Import and the outlet of described mixed-liquor return system 55 are communicated to described Hun Yang bis-district 5 and described biological selecting area 4 respectively; Described water outlet 59 is communicated with described Hun Yang mono-district 3 by described effective constant liquid level outlet system 56.
In the embodiment be more preferably, described synchronization zone stirring system 12, described denitrification zone stirring system 22, described Hun Yang mono-district stirring system 32 and described biological selecting area stirring system 42 are respectively symmetrically arranged a pair; Described Hun Yang bis-district stirring system 52 is symmetrically arranged two right.
In the embodiment be more preferably, described synchronization zone stirring system 12, described denitrification zone stirring system 22, described Hun Yang mono-district stirring system 32, described biological selecting area stirring system 42 and described Hun Yang bis-district stirring system 52 are variable speed stirring system.
Use described meticulous intelligent biological to mix a biochemical treatment process for wastewater for oxygen reaction bed, comprise step as follows:
The first step, the mixed oxygen stage: described water-in 19 starts water inlet, opens the described vast scale recycle system 35 and described mixed-liquor return system 55; And open described synchronization zone stirring system 12, described denitrification zone stirring system 22, described Hun Yang mono-district stirring system 32, described biological selecting area stirring system 42, described Hun Yang bis-district stirring system 52, the accurate gas distribution system in described synchronization zone 11, the accurate gas distribution system 51 of the accurate gas distribution system in described Hun Yang mono-district 31 and described Hun Yang bis-district, water inlet is stirred and is mixed into oxygen; Described synchronization zone 1 maintains dissolved oxygen 0.26mg-0.30mg/L, described denitrification zone 2 maintains dissolved oxygen 0mg-0.1mg//L, described Hun Yang mono-district 3 maintains dissolved oxygen 1-2mg/L, and described biological selecting area 4 maintains dissolved oxygen 0mg-0.1mg/L, and described Hun Yang bis-district 5 maintains dissolved oxygen 0.3-5mg/L; Described Intelligent central Logical Supervisory Control and executive system 6 control described synchronization zone compound dosing system 15 and described biological selecting area compound dosing system 43 adds compound respectively in described synchronization zone 1 and described biological selecting area 4;
Second step, precipitation strains the water stage: described water-in 19 stops water inlet, closes described Hun Yang bis-district stirring system 52 and the accurate gas distribution system 51 in described Hun Yang bis-district; Described synchronization zone 1 maintains dissolved oxygen 0.26mg-0.30mg/L, described denitrification zone 2 maintains dissolved oxygen 0mg-0.1mg//L, described Hun Yang mono-district 3 maintains dissolved oxygen 1-2mg/L, and described biological selecting area 4 maintains dissolved oxygen 0mg-0.1mg//L, and described Hun Yang bis-district 5 maintains dissolved oxygen 0mg-0.1mg//L; Described Hun Yang bis-district 5 starts precipitation; Start after precipitation to strain water, the water outlet after process is flowed out from described water outlet 59; After straining water, enter the first step, circular flow.
In the embodiment be more preferably, the backwater amount of the described vast scale recycle system 35 is 10-30 times of the flooding quantity of described water-in 19; The backwater amount of described mixed-liquor return system 55 is 0.2-3 times of the flooding quantity of described water-in 19.
In the embodiment be more preferably, the backwater amount of the described vast scale recycle system 35 is 20 times of the flooding quantity of described water-in 19; The backwater amount of described mixed-liquor return system 55 is 2 times of the flooding quantity of described water-in 19.
In the embodiment be more preferably, the first step is mixed in the oxygen stage, and described synchronization zone 1 maintains dissolved oxygen 0.28mg/L; Second step precipitation is strained in the water stage, and described synchronization zone 1 also maintains dissolved oxygen 0.28mg/L.
In the embodiment be more preferably, described compound is SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea.
In the embodiment be more preferably, described compound is that two or more in SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea mix.
Embodiment one: coking industry garden, Shanxi 3000t/d wastewater treatment project
The process water yield: 3000t/d
Influent quality:
| Project | COD | BOD5 | NH 3-N | PH |
| Index (mg/L) | 7000 | 1500 | 200 | 8.0 |
| Project | TN | Volatile phenol | Sulfide | Thiocyanide |
| Index (mg/L) | 500 | 800 | 100 | 1200 |
Effluent quality:
| Project | COD | BOD5 | NH 3-N | PH |
| Index (mg/L) | 100 | 10 | 5 | 7 |
| Project | TN | Volatile phenol | Sulfide | Thiocyanide |
| Index (mg/L) | 10 | 0.01 | 0.01 | 0.1 |
Implementation step:
The first step, the mixed oxygen stage: described water-in 19 starts water inlet, opens the described vast scale recycle system 35 and described mixed-liquor return system 55; And open described synchronization zone stirring system 12, described denitrification zone stirring system 22, described Hun Yang mono-district stirring system 32, described biological selecting area stirring system 42, described Hun Yang bis-district stirring system 52, the accurate gas distribution system in described synchronization zone 11, the accurate gas distribution system 51 of the accurate gas distribution system in described Hun Yang mono-district 31 and described Hun Yang bis-district, water inlet is stirred and is mixed into oxygen; Described synchronization zone 1 maintains dissolved oxygen 0.30mg/L, and described denitrification zone 2 maintains dissolved oxygen 0.1mg//L, and described Hun Yang mono-district 3 maintains dissolved oxygen 2mg/L, and described biological selecting area 4 maintains dissolved oxygen 0.1mg/L, and described Hun Yang bis-district 5 maintains dissolved oxygen 5mg/L; Described Intelligent central Logical Supervisory Control and executive system 6 control described synchronization zone compound dosing system 15 and described biological selecting area compound dosing system 43 adds compound respectively in described synchronization zone 1 and described biological selecting area 4; Described compound is SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea;
Second step, precipitation strains the water stage: described water-in 19 stops water inlet, closes described Hun Yang bis-district stirring system 52 and the accurate gas distribution system 51 in described Hun Yang bis-district; Described synchronization zone 1 maintains dissolved oxygen 0.30mg/L, and described denitrification zone 2 maintains dissolved oxygen 0.1mg//L, and described Hun Yang mono-district 3 maintains dissolved oxygen 2mg/L, and described biological selecting area 4 maintains dissolved oxygen 0.1mg//L, and described Hun Yang bis-district 5 maintains dissolved oxygen 0.1mg//L; Described Hun Yang bis-district 5 starts precipitation; Start after precipitation to strain water, the water outlet after process is flowed out from described water outlet 59; After straining water, enter the first step, circular flow.The backwater amount of the described vast scale recycle system 35 is 30 times of the flooding quantity of described water-in 19; The backwater amount of described mixed-liquor return system 55 is 3 times of the flooding quantity of described water-in 19.
Wherein said synchronization zone 1 is under the prerequisite adding compound, by synchronous nitration and denitrification mechanism, remove most of organism in waste water, good condition is created to follow-up degraded, denitrification zone 2 mainly utilizes the compound nitrogen source in medicament, denitrification and nitrosification metabolic mechanism is utilized to carry out open loop chain rupture to the hard-degraded substance in waste water, improve the biodegradability of waste water, Hun Yang mono-district 3 is that the main COD of system removes district, mainly make good use of the metabolism of oxygen animalcule, further metabolism will be carried out through synchronous and the pretreated organism of denitrification, in waste water, most of organism is effectively removed in this pond, for subsequent disposal creates good load circumstance and component environment.Under the katalysis of compound, in waste water, difficult degradation heterocyclic material realizes effectively degraded, and the ammonia nitrogen thoroughly removed in waste water and total nitrogen.
Through reaching the operation of 2 years, current stable effluent quality, process operation indices is stable reaches standard.
Embodiment two: coking industry garden, Hebei 6000t/d wastewater treatment project
The process water yield: 6000t/d
Influent quality:
| Project | COD | BOD5 | NH 3-N | PH |
| Index (mg/L) | 4000 | 500 | 150 | 8.0 |
| Project | TN | Volatile phenol | Sulfide | Thiocyanide |
| Index (mg/L) | 300 | 400 | 30 | 500 |
Effluent quality:
| Project | COD | BOD5 | NH 3-N | PH |
| Index (mg/L) | 80 | 10 | 5 | 7 |
| Project | TN | Volatile phenol | Sulfide | Thiocyanide |
| Index (mg/L) | 10 | 0.01 | 0.01 | 0.1 |
Implementation step:
The first step, the mixed oxygen stage: described water-in 19 starts water inlet, opens the described vast scale recycle system 35 and described mixed-liquor return system 55; And open described synchronization zone stirring system 12, described denitrification zone stirring system 22, described Hun Yang mono-district stirring system 32, described biological selecting area stirring system 42, described Hun Yang bis-district stirring system 52, the accurate gas distribution system in described synchronization zone 11, the accurate gas distribution system 51 of the accurate gas distribution system in described Hun Yang mono-district 31 and described Hun Yang bis-district, water inlet is stirred and is mixed into oxygen; Described synchronization zone 1 maintains dissolved oxygen 0.26mg/L, and described denitrification zone 2 maintains dissolved oxygen 0.01mg//L, and described Hun Yang mono-district 3 maintains dissolved oxygen 1mg/L, and described biological selecting area 4 maintains dissolved oxygen 0.01mg/L, and described Hun Yang bis-district 5 maintains dissolved oxygen 0.3mg/L; Described Intelligent central Logical Supervisory Control and executive system 6 control described synchronization zone compound dosing system 15 and described biological selecting area compound dosing system 43 adds compound respectively in described synchronization zone 1 and described biological selecting area 4; Described compound is that two or more in SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea mix.
Second step, precipitation strains the water stage: described water-in 19 stops water inlet, closes described Hun Yang bis-district stirring system 52 and the accurate gas distribution system 51 in described Hun Yang bis-district; Described synchronization zone 1 maintains dissolved oxygen 0.26mg/L, and described denitrification zone 2 maintains dissolved oxygen 0.01mg/L, and described Hun Yang mono-district 3 maintains dissolved oxygen 1mg/L, and described biological selecting area 4 maintains dissolved oxygen 0.01mg/L, and described Hun Yang bis-district 5 maintains dissolved oxygen 0.01mg/L; Described Hun Yang bis-district 5 starts precipitation; Start after precipitation to strain water, the water outlet after process is flowed out from described water outlet 59; After straining water, enter the first step, circular flow.The backwater amount of the described vast scale recycle system 35 is 10 times of the flooding quantity of described water-in 19; The backwater amount of described mixed-liquor return system 55 is 0.2 times of the flooding quantity of described water-in 19.
Synchronization zone 1 is under the prerequisite adding compound, by synchronous nitration and denitrification mechanism, remove most of organism in waste water, good condition is created to follow-up degraded, denitrification zone 2 mainly utilizes the compound nitrogen source in medicament, denitrification and nitrosification metabolic mechanism is utilized to carry out open loop chain rupture to the hard-degraded substance in waste water, improve the biodegradability of waste water, Hun Yang mono-district 3 is that the main COD of system removes district, mainly make good use of the metabolism of oxygen animalcule, further metabolism will be carried out through synchronous and the pretreated organism of denitrification, in waste water, most of organism is effectively removed in this pond, for subsequent disposal creates good load circumstance and component environment.When accurately controlling the gas blower oxygen supply in accurate gas distribution system, realize meticulous mixed oxygen, under the katalysis of compound, in waste water, difficult degradation heterocyclic material realizes effectively degraded, and the ammonia nitrogen thoroughly removed in waste water and total nitrogen.
Through reaching the operation of a year, current stable effluent quality, process operation indices is stable reaches standard.
Embodiment three: Zhejiang Fine Chemical Co., Ltd 2000t/d wastewater treatment project
The process water yield: 2000t/d
Influent quality:
| Project | COD | BOD5 | NH 3-N | PH |
| Index (mg/L) | 1500 | 200 | 5 | 7.5 |
| Project | TN | Volatile phenol | Benzene | Toluene |
| Index (mg/L) | 8 | 10 | 100 | 55 |
Effluent quality:
| Project | COD | BOD5 | NH 3-N | PH |
| Index (mg/L) | 50 | 7 | 1 | 7 |
| Project | TN | Volatile phenol | Benzene | Toluene |
| Index (mg/L) | 3 | 0.01 | 0.3 | 0.1 |
Implementation step:
The first step, the mixed oxygen stage: described water-in 19 starts water inlet, opens the described vast scale recycle system 35 and described mixed-liquor return system 55; And open described synchronization zone stirring system 12, described denitrification zone stirring system 22, described Hun Yang mono-district stirring system 32, described biological selecting area stirring system 42, described Hun Yang bis-district stirring system 52, the accurate gas distribution system in described synchronization zone 11, the accurate gas distribution system 51 of the accurate gas distribution system in described Hun Yang mono-district 31 and described Hun Yang bis-district, water inlet is stirred and is mixed into oxygen; Described synchronization zone 1 maintains dissolved oxygen 0.28mg/L, and described denitrification zone 2 maintains dissolved oxygen 0.05mg//L, and described Hun Yang mono-district 3 maintains dissolved oxygen 1.5mg/L, and described biological selecting area 4 maintains dissolved oxygen 0.05mg/L, and described Hun Yang bis-district 5 maintains dissolved oxygen 3mg/L; Described Intelligent central Logical Supervisory Control and executive system 6 control described synchronization zone compound dosing system 15 and described biological selecting area compound dosing system 43 adds compound respectively in described synchronization zone 1 and described biological selecting area 4; Described compound is SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea.
Second step, precipitation strains the water stage: described water-in 19 stops water inlet, closes described Hun Yang bis-district stirring system 52 and the accurate gas distribution system 51 in described Hun Yang bis-district; Described synchronization zone 1 maintains dissolved oxygen 0.28mg/L, described denitrification zone 2 maintains dissolved oxygen 0.05mg//L, described Hun Yang mono-district 3 maintains dissolved oxygen 1.5mg/L, and described biological selecting area 4 maintains dissolved oxygen 0.05mg//L, and described Hun Yang bis-district 5 maintains dissolved oxygen 0.05mg//L; Described Hun Yang bis-district 5 starts precipitation; Start after precipitation to strain water, the water outlet after process is flowed out from described water outlet 59; After straining water, enter the first step, circular flow.The backwater amount of the described vast scale recycle system 35 is 20 times of the flooding quantity of described water-in 19; The backwater amount of described mixed-liquor return system 55 is 2 times of the flooding quantity of described water-in 19.
Synchronization zone 1 is under the prerequisite adding compound, by synchronous nitration and denitrification mechanism, remove most of organism in waste water, good condition is created to follow-up degraded, denitrification zone 2 mainly utilizes the compound nitrogen source in medicament, denitrification and nitrosification metabolic mechanism is utilized to carry out open loop chain rupture to the hard-degraded substance in waste water, improve the biodegradability of waste water, Hun Yang mono-district 3 is that the main COD of system removes district, mainly make good use of the metabolism of oxygen animalcule, further metabolism will be carried out through synchronous and the pretreated organism of denitrification, in waste water, most of organism is effectively removed in this pond, for subsequent disposal creates good load circumstance and component environment.When accurately controlling the gas blower oxygen supply in accurate gas distribution system, realize meticulous mixed oxygen, under the katalysis of compound, in waste water, difficult degradation heterocyclic material realizes effectively degraded, and the ammonia nitrogen thoroughly removed in waste water and total nitrogen.
Through reaching the operation of 3 years, current stable effluent quality, process operation indices is stable reaches standard.
The present invention is described in detail in preferred embodiment above by concrete; but those skilled in the art should be understood that; the present invention is not limited to the above embodiment; within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement etc., all should be included within protection scope of the present invention.
Claims (9)
1. meticulous intelligent biological mixes an oxygen reaction bed, it is characterized in that: comprise main reaction system and subsystem;
Described main reaction system comprises high loading oxidation of coal system and underload nitrification; Described high loading oxidation of coal system comprises synchronization zone, denitrification zone and Hun Yang mono-district; Described underload nitrification comprises biological selecting area and Hun Yang bis-district; Described synchronization zone, described denitrification zone, described Hun Yang mono-district, described biological selecting area are communicated with successively with described Hun Yang bis-district, are provided with water-in in described synchronization zone, are provided with water outlet in described Hun Yang bis-district;
Described subsystem: comprise Intelligent central Logical Supervisory Control and executive system;
Also comprise the accurate gas distribution system in synchronization zone be arranged in described synchronization zone, synchronization zone stirring system, synchronization zone dissolved oxygen/ORP/PH/ temperature online supervisory system, synchronization zone compound dosing system and synchronization zone intelligence Index Logic early warning system;
Also comprise the denitrification zone stirring system be arranged in described denitrification zone, denitrification zone dissolved oxygen/ORP/PH/ temperature online supervisory system and Intelligence Feedback supervisory system;
Also comprise the accurate gas distribution system in Hun Yang mono-district be arranged in described Hun Yang mono-district, Hun Yang mono-district stirring system, Hun Yang mono-district dissolved oxygen/ORP/PH/ temperature online supervisory system and intelligent dissolved oxygen and stirring intensity assignment logic system;
Also comprise the biological selecting area stirring system be arranged in described biological selecting area, biological selecting area compound dosing system and intelligent flow supervisory system;
Also comprise the accurate gas distribution system in Hun Yang bis-district be arranged in Hun Yang bis-district, Hun Yang bis-district stirring system, Hun Yang bis-district dissolved oxygen/ORP/PH/ temperature online supervisory system, intelligent dissolved oxygen and stirring intensity assignment logic system and effective constant liquid level outlet system;
Also comprise the vast scale recycle system and mixed-liquor return system;
Import and the outlet of the described vast scale recycle system are communicated to described Hun Yang mono-district and described synchronization zone respectively; Import and the outlet of described mixed-liquor return system are communicated to described Hun Yang bis-district and described biological selecting area respectively; Described water outlet is communicated with described Hun Yang mono-district by described effective constant liquid level outlet system.
2. meticulous intelligent biological according to claim 1 mixes oxygen reaction bed, it is characterized in that: described synchronization zone stirring system, described denitrification zone stirring system, described Hun Yang mono-district's stirring system and described biological selecting area stirring system are respectively symmetrically arranged a pair; Described Hun Yang bis-district stirring system is symmetrically arranged two right.
3. meticulous intelligent biological according to claim 1 mixes oxygen reaction bed, it is characterized in that: described synchronization zone stirring system, described denitrification zone stirring system, described Hun Yang mono-district stirring system, described biological selecting area stirring system and described Hun Yang bis-district stirring system are variable speed stirring system.
4. described meticulous intelligent biological mixes a biochemical treatment process for wastewater for oxygen reaction bed one of to use claim 1-3 any, it is characterized in that comprising step as follows:
The first step, the mixed oxygen stage:
Described water-in starts water inlet, opens the described vast scale recycle system and described mixed-liquor return system; And open described synchronization zone stirring system, described denitrification zone stirring system, described Hun Yang mono-district stirring system, described biological selecting area stirring system, described Hun Yang bis-district stirring system, the accurate gas distribution system in described synchronization zone, the accurate gas distribution system of the accurate gas distribution system in described Hun Yang mono-district and described Hun Yang bis-district, water inlet is stirred and is mixed into oxygen;
Described synchronization zone maintains dissolved oxygen 0.26mg-0.30mg/L, described denitrification zone maintains dissolved oxygen 0mg-0.1mg//L, described Hun Yang mono-district maintains dissolved oxygen 1-2mg/L, and described biological selecting area maintains dissolved oxygen 0mg-0.1mg/L, and described Hun Yang bis-district maintains dissolved oxygen 0.3-5mg/L;
Described Intelligent central Logical Supervisory Control and executive system control described synchronization zone compound dosing system and described biological selecting area compound dosing system adds compound respectively in described synchronization zone and described biological selecting area;
Second step, precipitation strains the water stage:
Described water-in stops water inlet, closes described Hun Yang bis-district's stirring system and the accurate gas distribution system in described Hun Yang bis-district;
Described synchronization zone maintains dissolved oxygen 0.26mg-0.30mg/L, described denitrification zone maintains dissolved oxygen 0mg-0.1mg//L, described Hun Yang mono-district maintains dissolved oxygen 1-2mg/L, and described biological selecting area maintains dissolved oxygen 0mg-0.1mg//L, and described Hun Yang bis-district maintains dissolved oxygen 0mg-0.1mg//L;
Described Hun Yang bis-district starts precipitation; Start after precipitation to strain water, the water outlet after process is flowed out from described water outlet;
After straining water, enter the first step, circular flow.
5. biochemical treatment process for wastewater according to claim 4, is characterized in that: the backwater amount of the described vast scale recycle system is 10-30 times of the flooding quantity of described water-in; The backwater amount of described mixed-liquor return system is 0.2-3 times of the flooding quantity of described water-in.
6. biochemical treatment process for wastewater according to claim 5, is characterized in that: the backwater amount of the described vast scale recycle system is 20 times of the flooding quantity of described water-in; The backwater amount of described mixed-liquor return system is 2 times of the flooding quantity of described water-in.
7. biochemical treatment process for wastewater according to claim 4, is characterized in that:
The first step is mixed in the oxygen stage, and described synchronization zone maintains dissolved oxygen 0.28mg/L;
Second step precipitation is strained in the water stage, and described synchronization zone also maintains dissolved oxygen 0.28mg/L.
8. meticulous intelligent biological according to claim 4 mixes oxygen reaction bed and uses its biochemical treatment process for wastewater, it is characterized in that: described compound is SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea.
9. meticulous intelligent biological according to claim 4 mixes oxygen reaction bed and uses its biochemical treatment process for wastewater, it is characterized in that: described compound is that two or more in SODIUMNITRATE, ammonium chloride, Sodium Nitrite or urea mix.
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| US5019266A (en) * | 1987-03-28 | 1991-05-28 | Forschungszentrum Juelich Gmbh | Waste water purification process with batchwise supply of waste water to the activated sludge tank |
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