CN102863059A - Additive for enhancing function of organism in aspect of ammonia nitrogen removal in water and use method of additive - Google Patents

Abstract

The invention relates to the wastewater treatment field, and in particular relates to an additive for enhancing the function of organism in the aspect of ammonia nitrogen removal in water and use method of additive. The additive comprises the following components in parts by weight: 5-10 parts of argillaceous diatomite, 1-3 parts of pH regulator and 0.1-2 parts of flocculant, wherein the pH regulator is one or more of fly ash, lime and sodium hydroxide and the flocculant is polyaluminum chloride or polymeric aluminum ferric chloride. The argillaceous diatomite is used as the carrier of nitrobacteria, fly ash is used to supplement the alkalinity consumption caused by nitration and polymeric chloride play good flocculation interception role, thus the flora value of the nitrobacteria can be increased effectively and rapidly, the liveweight of the biomass for removing ammonia nitrogen in wastewater can be enhanced, the effect is very significant and the cost is very low.

Description

A kind of enhanced biological is removed additive and the using method of ammonia nitrogen function in the waste water

Technical field

The present invention relates to field of waste water treatment, particularly a kind of enhanced biological is removed additive and the using method of ammonia nitrogen function in the waste water.

Background technology

The source of ammonia and nitrogen pollution is many, and quantity discharged is large.Ammonia nitrogen waste water such as the various concentration of the dischargings such as iron and steel, petrochemical complex, chemical fertilizer, inorganic chemical industry, glass manufacture, pharmacy waste water and the foodstuffs industry of industrial sector; The sanitary wastewater of the sewage in the daily life, percolate from garbage filling field, animal excrements, meat processing and animal husbandry, agricultural etc. also contains a large amount of ammonia nitrogens.

The outer ammonia nitrogen processing method of Present Domestic mainly contains blow-off method, stripping absorption method, chemical precipitation method, ion exchange method, break point chlorination method etc.And the biological denitrificaion method, namely the nitrification and denitrification method is the most economic method, and is especially more applicable to Low Concentration Ammonia Containing Wastewater in processing, and therefore, is used widely in each big city Sewage Plant and chemical wastewater treatment factory.But, only relying on the nitrification of present biomass, the water outlet ammonia nitrogen removal is unstable, and along with influent ammonium concentration increases, the water outlet ammonia nitrogen also rises rapidly, and existing discharge index difficulty reaches.

China's diatomite can be divided three classes according to quality, and diatom organic shell content is higher, and the diatomite quality is better.

The first kind: diatomite, refer to diatom organic shell content more than 80%, SiO2 content is more than 75% in the chemical composition;

Equations of The Second Kind: contain clay diatomite, refer to diatom organic shell content 70%～80%, SiO2 content is 65%～75% in the chemical composition;

The 3rd class: clay matter diatomite, refer to diatom organic shell content 55%～65% or below, in the chemical composition SiO2 content about 60% or below, belong to low-grade product.

This invention is intended to utilize diatomaceous low-grade product, clay matter diatomite.Such grade product is extensive at China's distributed pole, cheap, and exploitation, processing and use cost are very low, is conducive to the from now on technology popularization of this patent.

Summary of the invention

The object of the invention is to provide a kind of enhanced biological to remove the additive of ammonia nitrogen function in the waste water, unstable with the water outlet ammonia nitrogen removal that solves after biological denitrificaion method of the prior art is processed, and along with influent ammonium concentration increases, the water outlet ammonia nitrogen also rises rapidly, causes the difficult technical matters that reach discharge index.

Another object of the present invention is to provide a kind of enhanced biological to remove the using method of the additive of ammonia nitrogen function in the waste water, unstable with the water outlet ammonia nitrogen removal that solves after biological denitrificaion method of the prior art is processed, and along with influent ammonium concentration increases, the water outlet ammonia nitrogen also rises rapidly, causes the difficult technical matters that reach discharge index.

The object of the invention is achieved through the following technical solutions:

A kind of enhanced biological is removed the additive of ammonia nitrogen function in the waste water, comprises the following component in weight part:

Clayey diatom soil 5-10 part;

PH adjusting agent 1-3 part;

Flocculation agent 0.1-2 part.

Preferably, described additive comprises the following component in weight part:

Clayey diatom soil 6-8 part;

PH adjusting agent 1.5-2.5 part;

Flocculation agent 0.5-1.5 part.

Preferably, described additive comprises the following component in weight part:

7 parts in clayey diatom soil;

2 parts of pH adjusting agents;

1 part of flocculation agent.

Preferably, described pH adjusting agent be selected from flyash, lime or sodium hydroxide wherein one or more.

Preferably, described flocculation agent is selected from polymerize aluminum chloride or aluminium iron polychloride.

Preferably, described additive is particle, and the particle diameter of described particle is less than 50 μ m.

A kind of enhanced biological remove ammonia nitrogen function in the waste water the using method of additive, described additive comprises the following component in weight part:

Clayey diatom soil 5-10 part;

PH adjusting agent 1-3 part;

Flocculation agent 0.1-2 part;

Described using method may further comprise the steps:

(1), with the said components dry powder blend;

(2), the additive after the dry powder blend adds water and forms mixed solution, and the solids content of mixed solution is no more than 5%;

(3), with the continuous input of above-mentioned mixed solution to the purification tank for liquid waste that needs enhanced biological to process, injected volume is at 30ppm-50ppm;

(4), remove the throw out that is suspended in the surface.

Compared with prior art, the present invention has following advantage:

1, adds the reinforced by additive effect by of the present invention, can so that in original biological treatment tank the nitrifying bacteria community amount be significantly increased, can be so that the water outlet ammonia nitrogen removal after the processing of biological denitrificaion method be stable, and can be along with influent ammonium concentration increases, the water outlet ammonia nitrogen also rises rapidly, to reach discharge index;

2, technology is with strong points, and the additive each several part mechanism of action of the present invention is clear, and proportioning is suitable; Wherein, clayey diatom soil is as the carrier of nitrifier, by the at any time basicity consumption during additional nitration of flyash, the polymerization muriate plays good flocculation crown_interception, can stablize within a short period of time thus and increase nitrifying bacteria community amount and the necessary condition of enhanced biodegradation ammonia nitrogen in the purification tank for liquid waste, reach ammonia nitrogen function in the efficient hardening biological removal waste water;

3, except the particle diameter for the particle of additive has certain requirement (≤50 μ m or more than 300 orders), extremely low for the quality requirements of each component, each constituent materials source is widely distributed and be easy to get, so that use cost is very low;

4, it is very low to utilize additive of the present invention to require for the scrap build of original Sewage treatment systems, except need increase that a cover waterpower is mixed and throwing device, require hardly to change for original water treating equipment, system reform cost of investment is very low;

5, because the particle diameter of the particle of additive is very little, be easy to after adding be wrapped up by biological floe, form the biological floe core, can effectively improve the settling property of biological floe, and don't harden easily, improved the concentrated performance of former processing system biological phase, have very great help for the biophase concentration that improves former processing system, especially under the winter lesser temps, system processes the ammonia nitrogen effect stability and greatly improves.

Embodiment

Below in conjunction with embodiment, describe the present invention in detail.

Embodiment 1

The additive of present embodiment is prepared in required ratio, wherein, and 5 parts in clayey diatom soil; 1 part in flyash; 0.1 part of polymerize aluminum chloride.

Using method: the additive after the dry powder blend adds water and forms mixed solution, and the solids content of mixed solution is no more than 5%; To strengthening in the waste water, injected volume is at 30ppm-50ppm with the continuous input of those mixed solutions.

Add and a little be located at the biological treatment tank effluent trough, utilize biological treatment tank to the line-blending of settling tank, utilize the crown_interception of settling tank to make water outlet limpider, remove the suspension throw out.Treatment effect sees Table 1.Feed-water end is got back to the mixing sludge of holding back by recycling sludge reflux system, enters biochemical treatment system.

Embodiment 2

The additive of present embodiment is prepared in required ratio, wherein, and 7 parts in clayey diatom soil; 2 parts in lime; 1 part of aluminium iron polychloride.

Using method: the additive after the dry powder blend adds water and forms mixed solution, and the solids content of mixed solution is no more than 5%; To strengthening in the waste water, injected volume is at 30ppm-50ppm with the continuous input of those mixed solutions.

Add and a little be located at the biological treatment tank effluent trough, utilize biological treatment tank to the line-blending of settling tank, utilize the crown_interception of settling tank to make water outlet limpider, remove the suspension throw out.Treatment effect sees Table 1.Feed-water end is got back to the mixing sludge of holding back by recycling sludge reflux system, enters biochemical treatment system.

Embodiment 3

The additive of present embodiment is prepared in required ratio, wherein, and 10 parts in clayey diatom soil; 3 parts in sodium hydroxide; 2 parts of aluminium iron polychlorides.

Using method: the additive after the dry powder blend adds water and forms mixed solution, and the solids content of mixed solution is no more than 5%; To strengthening in the waste water, injected volume is at 30ppm-50ppm with the continuous input of those mixed solutions.

Add and a little be located at the biological treatment tank effluent trough, utilize biological treatment tank to the line-blending of settling tank, utilize the crown_interception of settling tank to make water outlet limpider, remove the suspension throw out.Treatment effect sees Table 1.Feed-water end is got back to the mixing sludge of holding back by recycling sludge reflux system, enters biochemical treatment system.

Embodiment 4

The additive of present embodiment is prepared in required ratio, wherein, and 8 parts in clayey diatom soil; 1.5 parts in flyash; 1.5 parts in lime; 1.5 parts of polymerize aluminum chlorides.

Using method: the additive after the dry powder blend adds water and forms mixed solution, and the solids content of mixed solution is no more than 5%; To strengthening in the waste water, injected volume is at 30ppm-50ppm with the continuous input of those mixed solutions.

Add and a little be located at the biological treatment tank effluent trough, utilize biological treatment tank to the line-blending of settling tank, utilize the crown_interception of settling tank to make water outlet limpider, remove the suspension throw out.Treatment effect sees Table 1.Feed-water end is got back to the mixing sludge of holding back by recycling sludge reflux system, enters biochemical treatment system.

Table 1

As seen, add the reinforced by additive effect by of the present invention, can so that in original biological treatment tank the nitrifying bacteria community amount be significantly increased, can be so that the water outlet ammonia nitrogen removal after the processing of biological denitrificaion method be stable, and can be along with influent ammonium concentration increases, the water outlet ammonia nitrogen also rises rapidly, to reach discharge index.

Additive technology of the present invention is with strong points, and the each several part mechanism of action is clear, and proportioning is suitable; Wherein, clayey diatom soil is as the carrier of nitrifier, by the at any time basicity consumption during additional nitration of flyash, the polymerization muriate plays good flocculation crown_interception, can stablize within a short period of time thus and increase nitrifying bacteria community amount and the necessary condition of enhanced biodegradation ammonia nitrogen in the purification tank for liquid waste, reach ammonia nitrogen function in the efficient hardening biological removal waste water.

Except the particle diameter for the particle of additive had certain requirement (≤50 μ m or more than 300 orders), extremely low for the quality requirements of each component, each constituent materials source was widely distributed and be easy to get, so that use cost is very low.

It is very low to utilize additive of the present invention to require for the scrap build of original Sewage treatment systems, except need increase that a cover waterpower is mixed and throwing device, require hardly to change for original water treating equipment, system reform cost of investment is very low.

Because the particle diameter of the particle of additive is very little, be easy to after adding be wrapped up by biological floe, form the biological floe core, can effectively improve the settling property of biological floe, and don't harden easily, improved the concentrated performance of former processing system biological phase, have very great help for the biophase concentration that improves former processing system, especially under the winter lesser temps, system processes the ammonia nitrogen effect stability and greatly improves.

More than disclosed only be several specific embodiments of the application, but the application is not limited thereto, the changes that any person skilled in the art can think of all should drop in the application's the protection domain.

Claims (7)

1. an enhanced biological is removed the additive of ammonia nitrogen function in the waste water, it is characterized in that, comprises the following component in weight part:

Clayey diatom soil 5-10 part;

PH adjusting agent 1-3 part;

Flocculation agent 0.1-2 part.

2. a kind of enhanced biological as claimed in claim 1 is removed the additive of ammonia nitrogen function in the waste water, it is characterized in that, comprises the following component in weight part:

Clayey diatom soil 6-8 part;

PH adjusting agent 1.5-2.5 part;

Flocculation agent 0.5-1.5 part.

3. a kind of enhanced biological as claimed in claim 1 is removed the additive of ammonia nitrogen function in the waste water, it is characterized in that, comprises the following component in weight part:

7 parts in clayey diatom soil;

2 parts of pH adjusting agents;

1 part of flocculation agent.

4. a kind of enhanced biological as claimed in claim 1 is removed the additive of ammonia nitrogen function in the waste water, it is characterized in that, described pH adjusting agent be selected from flyash, lime or sodium hydroxide wherein one or more.

5. a kind of enhanced biological as claimed in claim 1 is removed the additive of ammonia nitrogen function in the waste water, it is characterized in that described flocculation agent is selected from polymerize aluminum chloride or aluminium iron polychloride.

6. a kind of enhanced biological as claimed in claim 1 is removed the additive of ammonia nitrogen function in the waste water, it is characterized in that described additive is particle, and the particle diameter of described particle is less than 50 μ m.

An enhanced biological remove ammonia nitrogen function in the waste water the using method of additive, it is characterized in that described additive comprises the following component in weight part:

Clayey diatom soil 5-10 part;

PH adjusting agent 1-3 part;

Flocculation agent 0.1-2 part;

Described using method may further comprise the steps:

(1), with the said components dry powder blend;

(2), the additive after the dry powder blend adds water and forms mixed solution, and the solids content of mixed solution is no more than 5%;

(3), with the continuous input of above-mentioned mixed solution to the purification tank for liquid waste that needs enhanced biological to process, injected volume is at 30ppm-50ppm;

(4), remove the throw out that is suspended in the surface.