CN109336345A - A kind of black and odorous water bed mud biological modification agent - Google Patents

Abstract

The invention belongs to water harnessing fields, and in particular to a kind of black and odorous water bed mud biological modification agent.Raw material by weight, including 20 ~ 25 parts of modification infusorial earth, 10 ~ 15 parts of polymeric aluminum sulfate iron, 10 ~ 15 parts of bentonite, 10 ~ 15 parts of chitosan, 10 ~ 15 parts of Compositions of Bamboo Shoot Shell, 8 ~ 15 parts of Vitex negundo var cannabifolia ash alkali extract, 10 ~ 15 parts of microbial bacterial agent.Biological modification agent of the present invention can make polluted bed mud restore benign soil skeleton and pore structure, improve benthic fertility and activation capacity, reduce endogenous pollution release, improve matrix oxidation-reduction potential, increase bed mud dissolved oxygen, it is black smelly to eliminate bed mud.

Description

A kind of black and odorous water bed mud biological modification agent

Technical field

The invention belongs to water harnessing fields, and in particular to a kind of black and odorous water bed mud biological modification agent.

Background technique

Traditional bed mud improved materials are often referred to the various chemical coagulation flocculants used in processes, and there are commonly stones Some chemical synthetic materials such as ash, Polyferric Sulfate, poly-aluminium, macromolecule.The using effect of this kind of chemical synthetic material is obtained in industry Abundant affirmation, but as country is to all the more stringent of environmental requirement, the disadvantage of excessive use chemical synthetic material just highlights Come, and cause to pay close attention in the industry essentially consists in two o'clock, one is the production of many chemical synthetic materials and use process are with regard to band Carry out obvious secondary pollution；Secondly being exactly that chemical synthetic material largely remains in sludge that result in Treatment of Sludge difficulty bigger more Complexity brings problem to the effective use of partial sludge, also inhibits the hair that many sludge in industry recycle relevant enterprise Exhibition.Therefore many environmentally friendly pursuers are pursuing closer to natural, environmentally friendly, more economical, more efficient Novel water-purifying material.

Summary of the invention

The purpose of the present invention is to provide a kind of black and odorous water bed mud biological modification agents, can effectively improve bottom water body ring Border increases water body dissolved oxygen, absorbs organic matter in degradation water body, and antimicrobial efficiency is high.

To achieve the above object, the present invention adopts the following technical scheme:

A kind of black and odorous water bed mud biological modification agent, raw material by weight, including 20 ~ 25 parts of modification infusorial earth, polymerised sulphur 10 ~ 15 parts of sour ferro-aluminum, 10 ~ 15 parts of bentonite, 10 ~ 15 parts of chitosan, 10 ~ 15 parts of Compositions of Bamboo Shoot Shell, 8 ~ 15 parts of Vitex negundo var cannabifolia ash alkali extract, 10 ~ 15 parts of microbial bacterial agent.

The modification infusorial earth the preparation method comprises the following steps: diatomite is placed in the hydrochloric acid solution of 5mol/L be stirred 2 ~ 5h then takes out and is washed to neutrality, then diatomite is placed at 500 DEG C and calcines 1h, obtains modification infusorial earth.

The Compositions of Bamboo Shoot Shell the preparation method comprises the following steps: will clean, dry Compositions of Bamboo Shoot Shell crushes, be sieved, drying；It is placed in 0.5 again mol·L^-1Nitric acid solution in, at 50 ~ 70 DEG C impregnate 2 ~ 4 h；

The Vitex negundo var cannabifolia ash alkali extract the preparation method comprises the following steps: take Vitex negundo var cannabifolia branches and leaves, cremate as ash, distilled water dissolution, filtering are steamed to original The 1/5~1/6 of volume, admixes soluble starch, is dried into solid at 90 DEG C；Wherein soluble starch quality is Vitex negundo var cannabifolia branches and leaves Twice of quality.

The microbial bacterial agent specifically: nitrifying bacteria powder is mixed with denitrifying cocci bacteria powder according to mass ratio 1:1.

The preparation method of the black and odorous water bed mud biological modification agent comprising following steps:

(1) modification infusorial earth, polymeric aluminum sulfate iron, bentonite, Compositions of Bamboo Shoot Shell, Vitex negundo var cannabifolia ash alkali extract are mixed at 80 DEG C 8~12h；

(2) it then cools to room temperature, then chitosan, microbial bacterial agent is added in the mixture of step (1) acquisition, at room temperature 1 ~ 2h is stirred, is granulated, the modifying agent is prepared.

It uses Compositions of Bamboo Shoot Shell to coat high hole diatomite with modifying agent prepared by the present invention, wherein nitric acid pretreatment Compositions of Bamboo Shoot Shell Grain deconstructs intermolecular hydrogen bonding in Compositions of Bamboo Shoot Shell, improves Compositions of Bamboo Shoot Shell surface hydroxyl utilization rate, is conducive to and diatomite, chitosan, bentonite It is equal to be coupled, and the porous structure of Compositions of Bamboo Shoot Shell also easily adsorbs pollutant, can increase the effect of flocculation pollutant；In addition, For the present invention by the way that Vitex negundo var cannabifolia ash alkali extract is added, effect is to be further to adsorb the heavy metal in a certain amount of bed mud, drop The transfer ability of low heavy metal, since its addition can increase the alkalinity of bed mud, and in the soil of meta-alkalescence, iron in soil, Aluminum oxide is to Cr³⁺With stronger adsorption capacity, improve can reduction-state Cr content, while by addition starch Vitex negundo var cannabifolia Grey alkali extract, is not only added the aeration that can improve bed mud, and the raising of the ventilation capacity is conducive to the reduction in bed mud Property substance, conducive to the respiration of root system of plant, and have good viscous effect, can be adsorbed by fine particulate matter Modifying agent surface forms the bonding structure of chain type.

The present invention is strong with huge specific surface area and relatively using it by the way that this biological modification agent is added in black and odorous water Adsorption capacity, ultrafine dust substance (pollutant such as ammonia nitrogen, phosphorus in black and odorous water etc.) is adsorbed onto modifying agent surface, is being combined Its flocculation promotes the pollutant rapid physical in water to flocculate, is deposited in black smelly bed mud surface, restores the part self-cleaning of water body Ability, and the nutriment of similar siliceous fertilizer is formed after high hole modifying agent absorption pollutant, self divides under the conditions ofs pollutant anaerobism etc. Xie Shi, high hole modifying agent will be slow the pollutant (i.e. nutriment) that release is decomposed to form and provide nutrient to water plant, simultaneously Bacterium makes bottom and entire water ecosystem can be with using modifying agent as the organic pollutant in the black smelly bed mud of carrier fast decoupled Fast speed is restored, and the natural environment ecosystem is reached.

In treatment process, micro bed mud biological modification agent, under high velocity agitation, the injustice on biological modification agent surface is added Weighing apparatus electrical potential energy, which is destroyed in sewage, ionizes subloop, and neutralizes the charging property of suspended ion, causes the ξ of colloidal solid and micelle structure electric It reduces or is zero in position.To achieve the purpose that colloidal solid is detached from, the pollutant rapid physical in water is promoted to flocculate, precipitate.Together When plus biological modification agent have huge specific surface area, huge pore volume and stronger adsorption capacity, ultrafine dust substance It is adsorbed onto modifying agent surface, forms chain structure, moment sinking separates the surface for being covered in black smelly bed mud with water body.Microorganism is attached On biological modification agent carrier, it is numerous rapidly as foodstuff using the pollutant of diatom surface aggregate without capturing carbon source in water body It grows, while providing nutrient for the growth of water plant, slowly clear up black smelly bed mud, form natural ecological circulation.

Remarkable advantage of the invention is:

(1) 60% or more toxic chemistry is replaced with nontoxic biological modification agent physical absorption and electrostatic polymerization in processes Flocculant；

(2) breed microorganism in the carbon source of biological modification agent surface enrichment as bio-carrier with nanometer micropore；

(3) nutriment similar to siliceous fertilizer, when self is decomposed under the conditions ofs pollutant anaerobism etc., biology are formed after adsorbing organic pollutant Modifying agent will be slow the pollutant (i.e. nutriment) that release is decomposed to form and provide nutrient to water plant, while bacterium is with nanometer Biological modification agent is the organic pollutant in the black smelly bed mud of carrier fast decoupled；

(4) biological modification agent of the present invention can make polluted bed mud restore benign soil skeleton and pore structure, improve benthic Fertility and activation capacity reduce endogenous pollution release, improve matrix oxidation-reduction potential, increase bed mud dissolved oxygen, eliminate Bed mud is black smelly.

More traditional bed mud modifying agent, which is compared, following characteristics:

(1) traditional bed mud modifying agent is chemical agent, and long-time service can generate secondary pollution；The present invention is that nature purification is mixed It closes into without secondary pollution.

(2) traditional bed mud modifying agent can not be as the carrier of bacterium；And the present invention is used as the carrier of bacterium and is filled Decompose organic contamination.

(3) it is water plant that traditional bed mud modifying agent, which can not adsorb ammonia nitrogen, phosphorus, heavy metal in organic pollutant etc., It supplies nutrients；And the present invention adsorbs the nutriment that similar siliceous fertilizer is formed after organic pollutant, under the conditions ofs pollutant anaerobism etc. self When decomposition, nano biological modifying agent will be slow the pollutant (i.e. nutriment) that release is decomposed to form and support to water plant offer Part, while bacterium is using nano biological modifying agent as the organic pollutant in the black smelly bed mud of carrier fast decoupled.

Specific embodiment

Further to disclose rather than the present invention is limited, the present invention is described in further detail below in conjunction with example.

Embodiment 1

A kind of black and odorous water bed mud biological modification agent, raw material by weight, including 20 parts of modification infusorial earth, polyaluminium sulfate 10 parts of iron, 10 parts of bentonite, 10 parts of chitosan, 10 parts of Compositions of Bamboo Shoot Shell, 8 parts of Vitex negundo var cannabifolia ash alkali extract, 10 parts of microbial bacterial agent.

The modification infusorial earth the preparation method comprises the following steps: diatomite is placed in the hydrochloric acid solution of 5mol/L be stirred 2 ~ 5h then takes out and is washed to neutrality, then diatomite is placed at 500 DEG C and calcines 1h, obtains modification infusorial earth.

The Compositions of Bamboo Shoot Shell the preparation method comprises the following steps: will clean, dry Compositions of Bamboo Shoot Shell crushes, be sieved, drying；It is placed in 0.5 again mol·L^-1Nitric acid solution in, at 50 ~ 70 DEG C impregnate 2 ~ 4 h；

The Vitex negundo var cannabifolia ash alkali extract the preparation method comprises the following steps: take Vitex negundo var cannabifolia branches and leaves, cremate as ash, distilled water dissolution, filtering are steamed to original The 1/5~1/6 of volume, admixes soluble starch, is dried into solid at 90 DEG C；Wherein soluble starch quality is Vitex negundo var cannabifolia branches and leaves Twice of quality.

The microbial bacterial agent specifically: nitrifying bacteria powder is mixed with denitrifying cocci bacteria powder according to mass ratio 1:1.

The preparation method of the black and odorous water bed mud biological modification agent comprising following steps:

(1) modification infusorial earth, polymeric aluminum sulfate iron, bentonite, Compositions of Bamboo Shoot Shell, Vitex negundo var cannabifolia ash alkali extract are mixed at 80 DEG C 8h；

(2) it then cools to room temperature, then chitosan, microbial bacterial agent is added in the mixture of step (1) acquisition, at room temperature 1h is stirred, is granulated, the modifying agent is prepared.

Embodiment 2

A kind of black and odorous water bed mud biological modification agent, raw material by weight, including 22 parts of modification infusorial earth, polyaluminium sulfate 13 parts of iron, 13 parts of bentonite, 13 parts of chitosan, 13 parts of Compositions of Bamboo Shoot Shell, 10 parts of Vitex negundo var cannabifolia ash alkali extract, 13 parts of microbial bacterial agent.

The modification infusorial earth the preparation method comprises the following steps: diatomite is placed in the hydrochloric acid solution of 5mol/L be stirred 2 ~ 5h then takes out and is washed to neutrality, then diatomite is placed at 500 DEG C and calcines 1h, obtains modification infusorial earth.

The Compositions of Bamboo Shoot Shell the preparation method comprises the following steps: will clean, dry Compositions of Bamboo Shoot Shell crushes, be sieved, drying；It is placed in 0.5 again mol·L^-1Nitric acid solution in, at 50 ~ 70 DEG C impregnate 2 ~ 4 h；

The Vitex negundo var cannabifolia ash alkali extract the preparation method comprises the following steps: take Vitex negundo var cannabifolia branches and leaves, cremate as ash, distilled water dissolution, filtering are steamed to original The 1/5~1/6 of volume, admixes soluble starch, is dried into solid at 90 DEG C；Wherein soluble starch quality is Vitex negundo var cannabifolia branches and leaves Twice of quality.

The microbial bacterial agent specifically: nitrifying bacteria powder is mixed with denitrifying cocci bacteria powder according to mass ratio 1:1.

The preparation method of the black and odorous water bed mud biological modification agent comprising following steps:

(1) modification infusorial earth, polymeric aluminum sulfate iron, bentonite, Compositions of Bamboo Shoot Shell, Vitex negundo var cannabifolia ash alkali extract are mixed at 80 DEG C 10h；

(2) it then cools to room temperature, then chitosan, microbial bacterial agent is added in the mixture of step (1) acquisition, at room temperature 1h is stirred, is granulated, the modifying agent is prepared.

Embodiment 3

A kind of black and odorous water bed mud biological modification agent, raw material by weight, including 25 parts of modification infusorial earth, polyaluminium sulfate 15 parts of iron, 15 parts of bentonite, 15 parts of chitosan, 15 parts of Compositions of Bamboo Shoot Shell, 15 parts of Vitex negundo var cannabifolia ash alkali extract, 15 parts of microbial bacterial agent.

The modification infusorial earth is stirred 5h the preparation method comprises the following steps: diatomite is placed in the hydrochloric acid solution of 5mol/L, It then takes out and is washed to neutrality, then diatomite is placed at 500 DEG C and calcines 1h, obtain modification infusorial earth.

The Compositions of Bamboo Shoot Shell the preparation method comprises the following steps: will clean, dry Compositions of Bamboo Shoot Shell crushes, be sieved, drying；It is placed in 0.5 again mol·L^-1Nitric acid solution in, at 50 ~ 70 DEG C impregnate 2 ~ 4 h；

The Vitex negundo var cannabifolia ash alkali extract the preparation method comprises the following steps: take Vitex negundo var cannabifolia branches and leaves, cremate as ash, distilled water dissolution, filtering are steamed to original The 1/5~1/6 of volume, admixes soluble starch, is dried into solid at 90 DEG C；Wherein soluble starch quality is Vitex negundo var cannabifolia branches and leaves Twice of quality.

The microbial bacterial agent specifically: nitrifying bacteria powder is mixed with denitrifying cocci bacteria powder according to mass ratio 1:1.

The preparation method of the black and odorous water bed mud biological modification agent comprising following steps:

(1) modification infusorial earth, polymeric aluminum sulfate iron, bentonite, Compositions of Bamboo Shoot Shell, Vitex negundo var cannabifolia ash alkali extract are mixed at 80 DEG C 12h；

(2) it then cools to room temperature, then chitosan, microbial bacterial agent is added in the mixture of step (1) acquisition, at room temperature 2h is stirred, is granulated, the modifying agent is prepared.

Comparative example

A kind of black and odorous water bed mud biological modification agent, raw material by weight, including 25 parts of modification infusorial earth, polyaluminium sulfate 15 parts of iron, 15 parts of bentonite, 15 parts of chitosan, 15 parts of straw powder, 15 parts of starch, 15 parts of microbial bacterial agent.

The preparation method comprises the following steps:

(1) 12h is mixed at 80 DEG C in modification infusorial earth, polymeric aluminum sulfate iron, bentonite, starch, straw powder；

(2) it then cools to room temperature, then chitosan, microbial bacterial agent is added in the mixture of step (1) acquisition, at room temperature 2h is stirred, is granulated, the modifying agent is prepared.

Application test:

The bed mud biological modification agent head prepared is put into black and odorous water and carries out remedying sludge.

The design parameter of each embodiment of table 1 and comparative example

The pH value in black and odorous water, ammonia nitrogen, total phosphorus, CODcr, BOD, DO content handled above-described embodiment and comparative example carries out Test, as shown in table 2.

Table 2

The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with repair Decorations, are all covered by the present invention.

Claims (6)

1. a kind of black and odorous water bed mud biological modification agent, it is characterised in that: raw material by weight, including modification infusorial earth 20 ~ 25 parts, 10 ~ 15 parts of polymeric aluminum sulfate iron, 10 ~ 15 parts of bentonite, 10 ~ 15 parts of chitosan, 10 ~ 15 parts of Compositions of Bamboo Shoot Shell, Vitex negundo var cannabifolia ash alkali carries Take 8 ~ 15 parts of object, 10 ~ 15 parts of microbial bacterial agent.

2. a kind of black and odorous water bed mud biological modification agent according to claim 1, it is characterised in that: the modification infusorial earth Be stirred 2 ~ 5h the preparation method comprises the following steps: diatomite is placed in the hydrochloric acid solution of 5mol/L, then take out and be washed to neutrality, then Diatomite is placed at 500 DEG C and calcines 1h, obtains modification infusorial earth.

3. a kind of black and odorous water bed mud biological modification agent according to claim 1, it is characterised in that: the system of the Compositions of Bamboo Shoot Shell Preparation Method are as follows: will clean, dry Compositions of Bamboo Shoot Shell crushes, sieving, drying；It is placed in 0.5 molL again^-1Nitric acid solution in, 50 ~ 2 ~ 4 h are impregnated at 70 DEG C.

4. a kind of black and odorous water bed mud biological modification agent according to claim 1, it is characterised in that: the Vitex negundo var cannabifolia ash alkali carries Take object the preparation method comprises the following steps: takes Vitex negundo var cannabifolia branches and leaves, cremates as ash, distilled water dissolution, filtering are steamed to the 1/5~1/6 of original volume, mixed Enter soluble starch, is dried into solid at 90 DEG C；Wherein soluble starch quality is twice of Vitex negundo var cannabifolia branches and leaves quality.

5. a kind of black and odorous water bed mud biological modification agent according to claim 1, it is characterised in that: the microbial bacterial agent Specifically: nitrifying bacteria powder is mixed with denitrifying cocci bacteria powder according to mass ratio 1:1.

6. a kind of prepare the method such as the described in any item black and odorous water bed mud biological modification agents of claim 1 ~ 5, feature exists In: the following steps are included:

(1) modification infusorial earth, polymeric aluminum sulfate iron, bentonite, Compositions of Bamboo Shoot Shell, Vitex negundo var cannabifolia ash alkali extract are mixed at 80 DEG C 8~12h；

(2) it then cools to room temperature, then chitosan, microbial bacterial agent is added in the mixture of step (1) acquisition, at room temperature 1 ~ 2h is stirred, the modifying agent is prepared.