CN212833039U

CN212833039U - Carbon-free autotrophic nitrogen removal tank

Info

Publication number: CN212833039U
Application number: CN202020490121.XU
Authority: CN
Inventors: 张水平; 赵飞; 袁梦龙; 同现鹏
Original assignee: Shuiyi Holding Group Co ltd
Current assignee: Shuiyi Environmental Protection Group Co ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-03-30
Anticipated expiration: 2030-04-07

Abstract

The utility model provides a carbonless autotrophic nitrogen removal jar, it includes a jar body, jar body bottom is equipped with a water inlet of flange, and the internal netted perforation water distribution pipe of jar is connected to the water inlet, and this water distribution pipe is sent water into the annular water collection triangular weir at top through the high-pressure pump and flows out in the apopore that catchments that the mode of flowing automatically set up towards jar body one side top, be equipped with filter material reaction zone in netted perforation water distribution pipe and the annular water collection triangular weir at top, it is that denitrogenation efficiency is high, the running cost is low, and the material loss is few, and the filler change cycle is long, and equipment structure is simple, but the sewage treatment system of long-range supervision, the sustainable stable amplification of compound microorganism immobilized carrier cultivates special sulphur autotrophic denitrifying flora, and the generation cycle is long, and the surplus.

Description

Carbon-free autotrophic nitrogen removal tank

Technical Field

The utility model relates to a water treatment technology field, concretely relates to carbon-free autotrophic nitrogen removal tank.

Background

Along with the development of new policies of local standards of various provinces and cities in China, such as the local standards of Beijing and Tianjin and the main water pollution discharge standard (DB 33/2169-.

Ordinary carbon-free autotrophic nitrogen removal jar structure is complicated, and inner structure is loaded down with trivial details, can cause the incrustation scale to pollute jar body after using for a long time, leads to the gradual variation of denitrogenation effect, just needs often to wash, but washs jar body very troublesome, needs the manual work to get into jar internal clearance to it is also very inconvenient to change inside filler, and jar body can often only rely on the sound to judge jar internal condition at the in-process of function.

Disclosure of Invention

The utility model overcomes prior art's is not enough, and the integrated equipment of carbon-free autotrophic denitrogenation and autotrophic denitrogenation jar that the development is applicable to municipal tail water degree of depth denitrogenation, advantages such as this jar of body back flush cycle length, operation maintenance cost are low, simple structure, operation convenience can be applicable to fields such as municipal sewage treatment plant tail water carries mark, river course restoration and groundwater restoration. The purpose of the utility model is achieved by the following technical proposal,

a carbon-free autotrophic nitrogen removal tank comprises a tank body, and is characterized in that a water inlet with a flange is arranged at the bottom of the tank body, the water inlet is connected with a mesh perforation water distribution pipe in the tank body, the water distribution pipe sends water into an annular water collection triangular weir at the top through a high-pressure pump and flows out of a water collection water outlet hole arranged at the top of one side of the tank body in a self-flowing mode, a filter material reaction area is arranged between the mesh perforation water distribution pipe and the annular water collection triangular weir at the top, a filler microorganism reaction filter layer is arranged in the reaction area, a composite sulfur-based porous filler and a solid particle composite microorganism immobilized multienzyme system carrier are arranged in the filler microorganism reaction filter layer, the carrier can achieve the carbon-free autotrophic nitrogen removal effect, a sampling pipe orifice is also arranged at the outer side of the filler microorganism reaction filter layer, the sampling pipe orifice samples through a sampling port arranged at the outer part of the tank body, a return hole is also arranged below, the reflux hole enables water to flow into the filler microorganism reaction filter layer through the reticular water collecting pipe of the reflux port, the inner side wall of the tank body is also provided with a back-flushing air supply pipe, the bottom of the air supply pipe is provided with a reticular perforated aeration pipe, the top of the air supply pipe is provided with an air blower, and air enters the aeration pipe through the air blower to be back-flushed and cleaned.

Preferably, the outer side of the tank body is also provided with a ladder stand and an inspection sight glass, a feeding manhole and a first inspection manhole for replacing the filler are arranged on one side edge of the ladder stand, the center of the top of the tank body is provided with a second inspection manhole, and one side of the second inspection manhole is provided with an exhaust hole, so that gas and water after backflushing can be separated.

Preferably, the composite sulfur-based porous filler and the solid particle composite microorganism immobilized multi-enzyme system carrier in the filler microorganism reaction filter layer are prepared by sequentially adding the two filter materials to the top of the filter layer by layer through the sequence of 1t of the composite sulfur-based porous filler and 6kg of the solid particle composite microorganism immobilized multi-enzyme system carrier, and the solid particle composite microorganism immobilized multi-enzyme system carrier is prepared by fixing a high-density obligate autotrophic denitrification dominant combination microbial flora on the carrier of a multi-enzyme system in the modes of ion adsorption, embedding, crosslinking and covalent bonding.

The utility model has the advantages of low operation cost; the material loss is less, the replacement period is long, and the operation and maintenance cost is low; the device has the characteristics of simple structure, small volume, remote supervision, convenience for operation and maintenance and the like.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic view of fig. 1 taken along direction a.

Fig. 3 is a schematic top view of the structure of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings: a carbon-free autotrophic nitrogen removal tank is disclosed, as shown in figure 1-3, the outer side wall of the device is provided with a ladder 1, an inspection sight glass 2 convenient for observing the growth condition of microorganisms on a filler, a feeding manhole 3 used for adding the filler, a bottom inspection manhole 4 convenient for inspection, a water collecting and discharging hole 5 at the top of the other side, a top return port 6,

sampling ports

7 and 8, a flange water inlet 9, a top ring-shaped water receiving triangular weir 11 at the top for automatically flowing water into a water collecting hole discharging device, a blower 17 at the top of the blower is connected into the device, a back-flushing air supply pipe 10 at the side wall is periodically back-flushed through a bottom ring-shaped perforated aeration pipe 15, in order to ensure that nitrogen is discharged out of the system in time during operation and gas is discharged out in time during backwashing, the top of the system is also provided with an exhaust hole 18, and meanwhile, the top of the system is provided with an inspection manhole 19, so that the operation condition of a reaction zone can be conveniently inspected.

The composite sulfur-based porous filler and the solid particle composite microorganism immobilized multi-enzyme system carrier in the filler microorganism reaction filter layer are formed by sequentially adding the two filter materials to the top of the filter layer by layer through the sequence of 1t of the composite sulfur-based porous filler and 6kg of the solid particle composite microorganism immobilized multi-enzyme system carrier, and the solid particle composite microorganism immobilized multi-enzyme system carrier is formed by fixing a high-density obligate autotrophic denitrification dominant combination microbial flora on the carrier of a multi-enzyme system in the modes of ion adsorption, embedding, crosslinking and covalent bonding.

The composite microorganism is prepared by osmotic pressure regulator NaCl, wt% =0.5-0.8%, surfactant sodium dodecyl benzene sulfonate wt% =0.030.06 percent of nutrient substances (wherein the nutrient substances comprise 8-10g/L of yeast crude extract, 10-20g/L of peptone, 5-10g/L, NH4, 4Cl 5-10g/L of glucose and K2HPO 45-10 g/L), and the weight percent of the nutrient substances is not less than 9.6-12.8 percent, and a buffer NaHCO is not less than₃The composite sulfur-based porous filler is composed of zeolite-based wt% =79.58-84.29%, and the composite sulfur-based porous filler is composed of one or more of a denitrification filler, a synchronous denitrification and dephosphorization filler, an alkaline type denitrification filler and an alkaline type synchronous denitrification and dephosphorization filler.

The solid particle composite microorganism immobilized multienzyme system carrier filler is prepared by the composite microorganism through impregnation drying, and the immobilized carrier microorganism contains a denitrified autotrophic bacteria system of more than or equal to 2.0 multiplied by 10⁸CFU/g, the carrier filler is solid particles, the diameter is 3/8 inches, the inner and outer surface areas of the fine holes are about 2-3 m2, and the carrier filler is non-toxic and non-irritant and can enable microorganisms to have larger space to attach and reproduce. The specific preparation steps of the compound microorganism are as follows:

step one, activating and expanding culture is carried out on solidified carrier microorganisms, and the contained strains comprise: thiobacillus thiofidus, thiobacillus ferrooxidans, thiobacillus thiotolerans, thiobacillus synapticus, thiobacillus thiofidus, thiobacillus rosenbergii, abelian acidogenic arbuscular mycorrhiza, thiobacillus thioparviensis, thiobacillus denitrificans, sulfate reducing bacteria and talocrococcus;

inoculating the expanded microorganism into a mixed culture medium for culture, wherein the time is controlled to be 10-14h, and the culture temperature is about 40 ℃ to obtain a mixed strain;

and step three, introducing ethanol into the expanded microorganism mixed strain, slowly adding the carrier material, uniformly mixing and soaking the mixture by centrifugation, controlling the rotation speed of a centrifuge to be 50-70rpm, mixing for 10min, and naturally drying the obtained mixture in a flat container to obtain the solid particle composite microorganism immobilized multienzyme system carrier.

And in the second step, the mixed culture medium is obtained by dissolving and mixing the microbial strains in the step 1 with a osmotic pressure regulator, a surfactant, a nutrient substance, a buffering agent and an electron transfer activator by using 5-10g/L deionized water.

The main components and the composition proportion of the denitrification filler are respectively polysulfide mixture wt% =10-15%, sulfur preparation wt% =75%, mixed foaming material wt% =5-8%, and binder wt% =5-7%, and the materials are stirred, mixed, melted, foamed, granulated and dried to prepare filler particles;

the main components and the composition proportion of the synchronous nitrogen and phosphorus removal filler are respectively polysulfide mixture wt% =10%, sulfur preparation wt% =40%, pyrite wt% =40%, mixed foaming material wt% =5%, and binder wt% =5%, and the filler particles are prepared by the materials through stirring and mixing, melting, foaming, granulating and drying processes;

the main components and the composition proportion of the alkali type denitrification filler are respectively polysulfide mixture wt% =0-5%, sulfur preparation wt% =75%, slow-release alkalinity material wt% =10%, mixed foaming material wt% =5-8%, and binder wt% =5-7%, and the materials are stirred, mixed, melted, foamed, granulated and dried to prepare filler particles;

the basic type synchronous nitrogen and phosphorus removal filler comprises the following main components in percentage by weight of polysulfide mixture not less than 0-5%, sulfur preparation not less than 40%, pyrite not less than 40%, slow-release alkalinity material not less than 5-10%, mixed foaming material not less than 5% and binder not less than 5%, and the filler particles are prepared from the materials through the processes of stirring, mixing, melting, foaming, granulating and drying.

The polysulfide mixture consists of a mixture of sodium polysulfide and potassium polysulfide, the sulfur preparation consists of elemental sulfur and sulfur, the mixed foaming material consists of calcium carbonate, magnesium carbonate and ammonium bicarbonate, the binder is sodium alginate or polyvinyl alcohol, the slow-release alkalinity material consists of sodium bicarbonate and sodium hydroxide, and the mixed foaming material consists of calcium carbonate, magnesium carbonate and ammonium bicarbonate.

The preparation method of the composite sulfur-based porous filler comprises the following steps:

step one, stirring and mixing the main components at the stirring speed of 150rpm for 1-2min, then adding water with the solid volume of 50-70% and then continuously stirring and mixing at the stirring speed of 300-400rpm for 5min to obtain mixed slurry;

and step two, pouring the mixed slurry into a prefabricated mold, and then curing the formed filler blank for about 3 d. And cutting the casting molded blank into cylindrical particles with the diameter of 3-5mm under the condition of normal temperature, and naturally drying for 7d to finish the preparation.

The loose porous structure and the larger specific surface area of the composite sulfur-based porous filler can realize the attachment growth of microorganisms, and the effective contact reaction of inlet water, the microorganisms and denitrification electron donor components so as to meet the high-efficiency reaction of sulfur autotrophic denitrification.

The equipment adopts a sulfur autotrophic denitrification filter tank, a solid particle composite microorganism immobilization carrier technology and a sulfur composite porous particle preparation technology, can quickly activate and amplify and culture obligate sulfur autotrophic denitrification flora, and provides sufficient contact of microorganisms with sewage and fillers. Meanwhile, aiming at the raw water properties and the requirements of advanced treatment of nitrogen and phosphorus removal, the filler for nitrogen and phosphorus removal, synchronous nitrogen and phosphorus removal, alkaline nitrogen and phosphorus removal is developed, the adaptability is wide, the advanced nitrogen and phosphorus removal treatment of municipal sewage is enhanced, and the water quality purification is achieved.

Claims

1. A carbon-free autotrophic nitrogen removal tank comprises a tank body and is characterized in that a water inlet with a flange is arranged at the bottom of the tank body, the water inlet is connected with a reticular perforation water distribution pipe in the tank body, the water distribution pipe sends water into an annular water collection triangular weir at the top through a high-pressure pump and flows out of a water collection water outlet hole arranged at the top of one side of the tank body in an automatic flow mode, a filter material reaction area is arranged between the reticular perforation water distribution pipe and the annular water collection triangular weir at the top, a filler microorganism reaction filter layer is arranged in the reaction area, a composite sulfur-based porous filler and a solid particle composite microorganism immobilized multienzyme system carrier are arranged in the filler microorganism reaction filter layer, the carrier can provide and amplify and culture an obligate autotrophic dominant microbial flora, a sampling pipe orifice is also arranged at the outer side of the filler microorganism reaction filter layer, and the sampling pipe orifice samples through a sampling port arranged outside the tank body, the top annular water collecting triangular weir is further provided with a backflow hole below, the backflow hole enables water to flow into the filler microorganism reaction filter layer through the net-shaped water collecting pipe of the backflow port, the inner side wall of the tank body is further provided with a backwashing air supply pipe, the bottom of the air supply pipe is provided with a net-shaped perforated aeration pipe, the top of the air supply pipe is provided with an air blower, and air enters the aeration pipe through the air blower to be backflushed and cleaned.

2. The carbon-free autotrophic nitrogen removal tank according to claim 1, wherein a ladder stand and an inspection sight glass are further provided on an outer side of the tank body, a feeding manhole and a first inspection manhole for replacing the filler are provided on one side of the ladder stand, a second inspection manhole is provided at a center position of a top of the tank body, and an exhaust hole is provided on one side of the second inspection manhole, so that gas and water after backflushing can be separated.

3. The carbon-free autotrophic nitrogen removal tank according to claim 1, wherein the composite sulfur-based porous filler and the solid particle composite microorganism immobilized multi-enzyme system carrier in the filler microorganism reaction filter layer are prepared by sequentially adding the above two filter materials to the top of the filter layer through 1t of the composite sulfur-based porous filler and 6kg of the solid particle composite microorganism immobilized multi-enzyme system carrier layer by layer, and the solid particle composite microorganism immobilized multi-enzyme system carrier is prepared by immobilizing high-density obligate autotrophic denitrification dominant combination microbial flora on a multi-enzyme system carrier through ion adsorption, embedding, crosslinking and covalent bonding.