CN105565424B - A kind of device removing ammonia nitrogen in situ during bank leaching water - Google Patents
A kind of device removing ammonia nitrogen in situ during bank leaching water Download PDFInfo
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- CN105565424B CN105565424B CN201610076617.0A CN201610076617A CN105565424B CN 105565424 B CN105565424 B CN 105565424B CN 201610076617 A CN201610076617 A CN 201610076617A CN 105565424 B CN105565424 B CN 105565424B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Abstract
The present invention provides a kind of devices removing ammonia nitrogen in situ during bank leaching water, described device includes adsorption box, packing areas A spaced apart from each other, the packing areas B, the packing areas C are formed by isolation board in the adsorption box, the wherein described isolation board is equipped with hole so that the packing areas A are connected with the packing areas B, and the packing areas B are connected with the packing areas C；The wherein described A column packings are equipped with water inlet, and the packing areas C bottom is equipped with water outlet；The wherein described packing areas A are filled with the mixture containing bentonitic oxygen-release material and natural river sand；Alkali modification attapulgite is filled in the packing areas B；The packing areas C are filled with the natural zeolite of 1-2mm of grain size.In said program, using oxygen-release material and alkali modification concave convex rod during bank leaching water, it is combined dynamic in-situ and removes ammonia nitrogen, the underground water ammonia nitrogen concentration in region can be at least reduced to III class standard of quality of groundwater, solve the pollution problem of ammonia nitrogen in existing underground water.
Description
Technical field
The present invention relates to technical field of water purification, particularly relate to a kind of dress removing ammonia nitrogen in situ during bank leaching water
It sets.
Background technology
Bank leaching water originates from the Europe of 1870s, and has been obtained generally after World War II
Using.After World War II, since river is polluted by city's industrial wastewater of having stable political situation, the Rhine, Elbe, more Nao
The widely used bank of coastwise contries of the Europe such as river and Seine trunk river filters intake technology to obtain drinking water.
Filtration, suction-operated, neutralization of acid with base, redox, hydrolysis during bank leaching water,
The influence of other natural attenuations effect such as Biogeochemistry can preferably remove polluter, because this shore leaching water is as one
Efficient, the inexpensive drinking water treatment of kind or preprocess method are by common concern in world wide.
Increase with the development of economy with population, the mankind are growing day by day to the destruction of environment, while subtracting with precipitation
It is few, the exceeded exploitation of underground water, underground water region water level decreasing, China's underground water pollution degree getting worse.Wherein, Industry Waste
Nitrogenous fertilizer is excessively used in leachable that water, city domestic sewage, house refuse generate, agricultural, produces a large amount of nitrogen
Close object and organic substance.After these substances enter water body or soil, it partly is directly entered underground water with precipitation, partly with earth's surface diameter
Flow to downstream migration and under ooze so that ammonia-nitrogen content increases in underground water, and pollutant is main during foring bank leaching water
One of pollution type.Being close to river reach underground water ammonia nitrogen pollution recovery technique, more the most commonly used is pump-and-treat system methods, i.e., will be by ammonia nitrogen
After the underground water extraction earth's surface of pollution is handled, the more commonly used method such as usual break point chlorination is reused, adds adsorbent,
They are without changing the original operation process of water factory, and without newly-built water processing establishment, and application is convenient, process performance is stable, compares
Economy has stronger adaptability in practical applications.But processing cost is high, and will produce disinfection by-products etc. and have
The secondary pollution of noxious material.
Hydrodynamic seepage pressure (Permeable Reactive Barrier, PRB) refers to by being fed in underground reservoir
Reaction medium is disposed on path to intercept Pollution Plume, contaminated underground water stream using degradation, absorption, is sunk by reaction medium
Reaction of forming sediment converts pollutant to environmentally acceptable form, to realize that grid downstream contamination object repairs purpose.Relative to pumping
Go out facture technology, technology has the characteristics that easy to operate, maintenance cost is low and effect on environment is small, successfully answers at present
Used in external some underground water pollutions area.But it by selecting different reaction mediums, is then gone with different reaction mechanisms
Except the ammonia nitrogen in underground water.Currently, the domestic reaction medium problem for PRB technologies is still within the preliminary examination stage.Therefore, it explores
Removal of a kind of reaction medium efficiently, inexpensive applied to ammonia nitrogen during bank leaching water, for the northern area of China and entirely
The exploitation of state's by-pass rivers has great importance.
Meanwhile riverside well field is the important resource of water supply in the northern area of China, ammonia and nitrogen pollution problem is because of mankind's activity
And surface water pollution influence and it is increasingly prominent.As a kind of underground water pollution repair materials of high efficiency, low cost, attapulgite and
Its modified product obtains more and more extensive concern.Comprehensive status both at home and abroad, concave convex rod are mainly characterized by application aspect：Greatly
Power develops deep processing, fully develops the excellent properties of itself, increases or assigns the necessary characteristic of mineral, to improve its usability
It can and be worth.Attapulgite processing refers to being directed to its purposes, improves its purity using various methods or measure, or change its mineral
Structure, chemical composition etc., further expand or improve its application range, and one of effective way is modified.
The research of ammonia nitrogen absorption performance during Wang Yaping etc. has carried out silicate mineral to waste water 2014, using roasting, acid
Four kinds of change, sodium and alkalization method of modifying are modified it, and adsorption experiment has been carried out with simulation ammonia nitrogen waste water.Alkali is found by research
Modified zeolite, Concave-convex clay rod and bentonite is higher to the removal rate for simulating ammonia nitrogen waste water.It is investigated structure feature
Influence with pH value to adsorption effect；The result shows that：The specific surface of mineral is all greatly improved than natural after alkalization, ammonia
Adsorption capacity of the nitrogen on mineral increases with the raising of pH value；But at higher ph values, adsorption capacity reduces instead, alkali
Modified sample significantly improves the absorption property of ammonia nitrogen.
Li Shengpin etc. was directed to the ammonia and nitrogen pollution problem of riverside well field in 2015, was close to the ammonia of river type water head site in Shenyang City
Nitrogen has carried out the survey for the purpose of locating hydrogeological resources in field study area, on the basis of finding out research area's ammonia and nitrogen pollution feature, in conjunction with interior batch
Experiment, column experiments and numerical simulation, filter out best ammonia nitrogen removal scheme, it is proposed that research area's hydrodynamic seepage pressure (PRB)
Constructing plan, and the PRB of demonstration project scale is successfully constructed, to remove the ammonia and nitrogen pollution in underground water.It is demonstrate,proved by testing
Real using ammonia nitrogen in the suction-operated removal underground water of microorganism nitrification bound zeolite is feasible.By to studying area
Quality Numerical Simulation finds that the PRB for being built with certain radian can protect water supply well to greatest extent.And in the structure of PRB
Cheng Zhong solves big depth (＞ 30m), the Construct question of PRB using High-pressure Spiral Spray Technology and rotary digging technology, and PRB builds up fortune
Row monitoring shows that the PRB of demonstration project scale effectively can block and remove ammonia nitrogen in underground water.
But showering is all focused on for being close to river reach underground water ammonia nitrogen pollution reparation at present, to in-situ remediation method
It studies less.And it is mostly used greatly in the research of existing in-situ immobilization associated with PRB technologies either PRB technologies and other technologies
Mode, and in PRB technologies the problem of reaction medium on be constantly in the exploratory stage.In addition, concave convex rod is as a kind of water
Sorbing material in processing, research both domestic and external has focused largely on the research of the absorption to organic species and heavy metal classes, to ammonia nitrogen
Absorption research also bias toward the research to medicine, printing and dyeing etc. in waste water；Therefore both at home and abroad never using concave convex rod as suction
Attached medium is used for the correlative study of ammonia nitrogen removal during bank leaching water.
Explanation of nouns：
1, bank leaching water：That is by-pass rivers (riverbank filtration, RBF) are to utilize riverbank or loke shore day
Right detergent power purifies the water flowed through, is then exploiting drinking water using pumped well away from river or lake certain distance
A kind of filtering technique.
2, attapulgite (attapulgite) also known as palygorskite (palygorskite) are a kind of layer of chain richness magnalium silicon
Silicate clay mineral have higher specific surface area and adsorption capacity at tiny rodlike, fibrous crystal form.
3, removal in situ：Refer in the place that pollution occurs through various engineering techniques, directly by pollutant from packet
Gas band soil layer and underground water in remove, so as to restore original environmental functional in-situ immobilization.
Invention content
The technical problem to be solved in the present invention is to provide a kind of device removing ammonia nitrogen in situ during bank leaching water and
The effect of method, the ammonia nitrogen that preferably can be close to river reach underground water to the removal of alkali modification concave convex rod is tested, with for Water warfare
Technological improvement provides better foundation.
The embodiment of the present invention proposes a kind of device removing ammonia nitrogen in situ during bank leaching water, including adsorption box,
Packing areas A spaced apart from each other, the packing areas B, the packing areas C are formed by isolation board in the adsorption box, wherein on the isolation board
Equipped with hole so that the packing areas A are connected with the packing areas B, and the packing areas B are connected with the packing areas C；The wherein described A column packings are equipped with water inlet
Mouthful, the packing areas C bottom is equipped with water outlet；The wherein described packing areas A are filled with containing bentonitic oxygen-release material and natural river sand
Mixture；Alkali modification attapulgite is filled in the packing areas B；The packing areas C are filled with the natural boiling of 1-2mm of grain size
Stone.
Further, the mixture containing bentonitic oxygen-release material and natural river sand, including：Contain bentonitic grain size
2-3cm oxygen-release materials and grain size are less than the natural river sand of 2mm；And it is described containing bentonitic 2-3cm of grain size oxygen-release materials with
The weight ratio of natural river sand of the grain size less than 2mm is 1：8；
Wherein, in the oxygen-release material bentonite and oxygen-release material mass ratio 10:1.0—2.0.
Further, the preparation method of the oxygen-release material is as follows：
(1) a certain amount of calper calcium peroxide, sand, bentonite, potassium phosphate and ammonium chloride, cement and water are weighed in order by weight
Than 1.5:0.7:0.6:0.8:0.7:1.4:2 in the beaker of the polytetrafluoroethylene (PTFE) of 500mL；
(2) 30min is stirred under the rotating speed of 180r/min with magnetic stirring apparatus makes it be sufficiently mixed, be uniformly dispersed；
(3) it is fabricated to the cube fritter of 2cm or so after mixing, air-dries under field conditions (factors).
Further, the alkali modification attapulgite filled in B column packings area is prepared in the following manner：
It weighs the attapulgite of phase homogenous quantities and NaOH is put into 550 DEG C of heating of Muffle furnace after mixing
2h；
(2) distilled water that 75mL is added is uniformly mixed after taking out, 100 DEG C of heating 8h in baking oven；
(3) sodium chloride solution of 50mL 1mol/L is added after cooling, is uniformly mixed, then pH=is adjusted with 1mol/L HCl
6；
(4) solid is dried after centrifuging.
Further, the adsorption box is the closed organic glass casees of 500mm × 500mm × 500mm, is equipped in the adsorption box
Groove for fixing the isolation board, the isolation board are equipped with 5 × 5 through-holes, and a diameter of 80mm of the through-hole；Its
Described in adsorption box be made of the poly (methyl methacrylate) plate of 20mm thickness, the isolation board be 10mm thickness poly (methyl methacrylate) plate support, it is described
Isolation board is 500mm wide × 510mm high；And the packing areas A, the packing areas B, the packing areas C volume fraction be 5：3：2.
Further, the water inlet is the hole on the lateral wall of the packing areas A, and the water outlet is on the lateral wall of the packing areas C
Hole.
Further, the packing areas A, the packing areas B, the filler in the packing areas C are wrapped up by the nylon wire of 10 mesh.
Further, the adsorption box includes babinet and head cover, and gasket is equipped between the head cover and babinet.
Technical scheme of the present invention has the following technical effect that：
In said program, using oxygen-release material and alkali modification concave convex rod during bank leaching water, combination dynamic in-situ is gone
Except ammonia nitrogen, the underground water ammonia nitrogen concentration in region can be at least reduced to III class standard of quality of groundwater, solved existing
The pollution problem of ammonia nitrogen in underground water.
Description of the drawings
Fig. 1 is that the structure of the adsorption box of the device for removing ammonia nitrogen in situ during bank leaching water of the embodiment of the present invention is shown
It is intended to；
Fig. 2 is the structural schematic diagram of the isolation board of adsorption box described in Fig. 1.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
To solve the pollution problem of ammonia nitrogen in existing underground water, the embodiment of the present invention provides one kind in bank leaching water process
The device of middle removal ammonia nitrogen in situ.
As shown in Figure 1, a kind of device removing ammonia nitrogen in situ during bank leaching water provided in an embodiment of the present invention,
Including adsorption box, packing areas A spaced apart from each other are formed by isolation board as shown in Figure 2 in the adsorption box, the packing areas B, C are filled out
Expect area, wherein the isolation board is equipped with hole so that the packing areas A are connected with the packing areas B, and the packing areas B are connected with the packing areas C；
The wherein described A column packings are equipped with water inlet, and the packing areas C bottom is equipped with water outlet；The wherein described packing areas A are filled with
Mixture containing bentonitic oxygen-release material and natural river sand；Alkali modification attapulgite is filled in the packing areas B；The C
Packing area is filled with the natural zeolite of 1-2mm of grain size.
Wherein, the mixture containing bentonitic oxygen-release material and natural river sand includes：Contain bentonitic grain size 2-
3cm oxygen-release materials and grain size are less than the natural river sand of 2mm；And described contain bentonitic 2-3cm of grain size oxygen-release materials and grain size
The weight ratio of natural river sand less than 2mm is 1：8, in the oxygen-release material bentonite with oxygen-release material mass ratio 10:1.0—
2.0。
Wherein, the preparation method of the oxygen-release material is as follows：
(1) a certain amount of calper calcium peroxide, sand, bentonite, potassium phosphate and ammonium chloride, cement and water are weighed in order by weight
Than 1.5:0.7:0.6:0.8:0.7:1.4:2 in the beaker of the polytetrafluoroethylene (PTFE) of 500mL；
(2) 30min is stirred under the rotating speed of 180r/min with magnetic stirring apparatus makes it be sufficiently mixed, be uniformly dispersed；
(3) it is fabricated to the cube fritter of 2cm or so after mixing, air-dries under field conditions (factors).
Wherein, the alkali modification attapulgite filled in B column packings area is prepared in the following manner：
(1) attapulgite and NaOH of phase homogenous quantities are weighed, 9g attapulgites and NaOH are weighed in the embodiment of the present invention, is mixed
550 DEG C of Muffle furnace is put into after closing uniformly to heat 2 hours；
(2) it is uniformly mixed the distilled water that 75mL is added after taking out, is heated 8 hours for 100 DEG C in baking oven；
(3) sodium chloride solution of 50mL 1mol/L is added after cooling, is uniformly mixed, then pH=is adjusted with 1mol/L HCl
6；
(4) solid is dried after centrifuging.
For another example shown in FIG. 1, the adsorption box in the embodiment of the present invention, including babinet and head cover, the babinet be 500mm ×
Organic glass case closed 500mm × 500mm, is equipped with the groove for fixing the isolation board in the adsorption box, it is described every
It is equipped with 5 × 5 through-holes, and a diameter of 80mm of the through-hole from plate.
The head cover uses length and width for 500mm, and thickness is the poly (methyl methacrylate) plate of 20mm.
The wherein described adsorption box is made of the poly (methyl methacrylate) plate of 20mm thickness, and the isolation board is the poly (methyl methacrylate) plate of 10mm thickness
Support, the isolation board are 500mm wide × 510mm high；And the packing areas A, the packing areas B, the packing areas C volume fraction be 5：
3：2.
Wherein, the water inlet is the hole on the lateral wall of the packing areas A, and the water outlet is the hole on the lateral wall of the packing areas C.
The packing areas A are first laid with 2 layers with the nylon wire of 10 mesh in box space, are then filled with the filler of the packing areas A,
After filling 2 layers of nylon wire are laid on top and with needlework to suturing on four sides；In the packing areas B with equally first with 10 purposes
Nylon wire is laid with 2 layers, is then filled with the filler of the packing areas B, is laid with 2 layers of nylon wire on top after filling and uses needle
Line to suturing on four sides；It is used in C filler regions and is equally first laid with 2 layers with the nylon wire of 10 mesh, then filling out with the packing areas C
Material is filled, and 2 layers of nylon wire are laid with and with needlework to suturing on four sides on top after filling.
After the completion of filler, it is equipped with gasket between the head cover and babinet, adsorption box top is sealed, has been used in combination
Machine glass cement is bonded.
In said program, using oxygen-release material and alkali modification concave convex rod during bank leaching water, combination dynamic in-situ is gone
Except ammonia nitrogen, the underground water ammonia nitrogen concentration in region can be at least reduced to III class standard of quality of groundwater, solved existing
The pollution problem of ammonia nitrogen in underground water.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of device removing ammonia nitrogen in situ during bank leaching water, which is characterized in that including adsorption box, the adsorption box
It is interior that packing areas A spaced apart from each other, the packing areas B, the packing areas C are formed by isolation board, wherein the isolation board is equipped with hole so that A
Packing area is connected with the packing areas B, and the packing areas B are connected with the packing areas C；The wherein described A column packings are equipped with water inlet, the packing areas C
Bottom is equipped with water outlet；The wherein described packing areas A are filled with the mixture containing bentonitic oxygen-release material and natural river sand；It is described
Alkali modification attapulgite is filled in the packing areas B；The packing areas C are filled with the natural zeolite of 1-2mm of grain size；
Wherein, the mixture containing bentonitic oxygen-release material and natural river sand, including：Contain bentonitic 2-3cm of grain size
Oxygen-release material and grain size are less than the natural river sand of 2mm；And it is described small containing bentonitic 2-3cm of grain size oxygen-release materials and grain size
In 2mm natural river sand weight ratio be 1：8；
Wherein, in the oxygen-release material bentonite and oxygen-release material mass ratio 10:1.0—2.0；
Wherein,
The preparation method of the oxygen-release material is as follows：
(1) a certain amount of calper calcium peroxide, sand, bentonite, potassium phosphate and ammonium chloride, cement and water are weighed in order by weight
1.5:0.7:0.6:0.8:0.7:1.4:2 in the beaker of the polytetrafluoroethylene (PTFE) of 500mL；
(2) 30min is stirred under the rotating speed of 180r/min with magnetic stirring apparatus makes it be sufficiently mixed, be uniformly dispersed；
(3) it is fabricated to the cube fritter of 2cm or so after mixing, air-dries under field conditions (factors)；
Wherein, the alkali modification attapulgite filled in B column packings area is prepared in the following manner：
It weighs the attapulgite of phase homogenous quantities and NaOH is put into 550 DEG C of heating 2h of Muffle furnace after mixing；
(2) distilled water that 75mL is added is uniformly mixed after taking out, 100 DEG C of heating 8h in baking oven；
(3) sodium chloride solution of 50mL 1mol/L is added after cooling, is uniformly mixed, then pH=6 is adjusted with 1mol/L HCl；
(4) solid is dried after centrifuging；
Wherein, the adsorption box is the closed organic glass casees of 500mm × 500mm × 500mm, is equipped with for solid in the adsorption box
The groove of the fixed isolation board, the isolation board are equipped with 5 × 5 through-holes, and a diameter of 80mm of the through-hole；It is wherein described
Adsorption box is made of the poly (methyl methacrylate) plate of 20mm thickness, and the isolation board is that the poly (methyl methacrylate) plate of 10mm thickness supports, the isolation board
For 500mm wide × 510mm high；And the packing areas A, the packing areas B, the packing areas C volume fraction be 5：3：2；
Wherein, the water inlet is the hole on the lateral wall of the packing areas A, and the water outlet is the hole on the lateral wall of the packing areas C；
Wherein, the packing areas A, the packing areas B, the filler in the packing areas C are wrapped up by the nylon wire of 10 mesh；
Wherein, the adsorption box includes babinet and head cover, and gasket is equipped between the head cover and babinet.
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| CN106673173A (en) * | 2017-02-22 | 2017-05-17 | 上海广联环境岩土工程股份有限公司 | In-situ oxidizing well for treating chlorinated hydrocarbon-polluted underground water |
| CN109485175A (en) * | 2018-11-28 | 2019-03-19 | 贵州大学 | A kind of ardealite storage yard leachate in-situ processing system |
| CN117326693A (en) * | 2023-09-15 | 2024-01-02 | 成都理工大学 | Distributed domestic sewage treatment system |
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