CN106315861A - Domestic sewage treating agent - Google Patents

Domestic sewage treating agent Download PDF

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Publication number
CN106315861A
CN106315861A CN201610682489.4A CN201610682489A CN106315861A CN 106315861 A CN106315861 A CN 106315861A CN 201610682489 A CN201610682489 A CN 201610682489A CN 106315861 A CN106315861 A CN 106315861A
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China
Prior art keywords
parts
sewage
domestic sewage
sewage treating
dithiocarbamate
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CN201610682489.4A
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Chinese (zh)
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CN106315861B (en
Inventor
罗锋
白洁
潘嘉立
王洋
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东莞市智汇水务科技有限公司
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Priority to CN201610682489.4A priority Critical patent/CN106315861B/en
Publication of CN106315861A publication Critical patent/CN106315861A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/281Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron

Abstract

The invention relates to the field of sewage treatment, in particular to a domestic sewage treating agent. The domestic sewage treating agent is prepared from, by mass, 5-15 parts of aluminum chloride, 60-150 parts of kieselguhr, 20-60 parts of ferric sulfate, 5-15 parts of dithiocarbamate, 5-10 parts of chitosan, 3-8 parts of caustic soda flakes and 2-6 parts of a microbial biofilm. The domestic sewage treating agent is high in treating efficiency and good in treating effect, treated sewage can reach the emission standard, and environmental pollution can be avoided.

Description

Domestic sewage treating compound

Technical field

The present invention relates to sewage treatment area, particularly relate to domestic sewage treating compound.

Background technology

Sewage disposal refers to as making sewage reach a certain water body of draining or it is purified by the water quality requirement that reuses Process, by sewage source classify, sewage disposal be generally divided into production waste process and sanitary sewage disposal.Production waste includes Trade effluent, rural sewage and medical sewage etc., and sanitary sewage be mainly in urban life use various detergents and Sewage, percolate, feces etc., containing inorganic salts such as substantial amounts of sulfide, phosphide, heavy metals, contain simultaneously and have in a large number Machine thing, causes itself BOD and COD higher.

The unprocessed discharge of sanitary sewage, can cause pathogen pollution, aerobic Organic Pollution, eutrophication pollution, evil The Heavy environmental pollution such as smelly, sour, alkali, salt pollution, ground water hardness rising, toxic pollutant pollution, be therefore badly in need of a kind of efficiently Sewage-treating agent, each pollutant in sanitary sewage can be removed so that the sewage after process reaches discharge standard, it is to avoid ring Environment pollution.

Summary of the invention

For solving the problems referred to above, the sewage after the present invention provides a kind for the treatment of effeciency height, high treating effect, process can reach Discharge standard, avoid the domestic sewage treating compound of environmental pollution.

The technical solution adopted in the present invention is: domestic sewage treating compound, in parts by mass, and aluminum chloride 5~15 parts, diatom 60~150 parts of soil, iron sulfate 20~60 parts, dithiocarbamate 5~15 parts, chitosan 5~10 parts, sheet alkali 3~8 parts, Microbial biofilm 2~6 parts.

Being improved to further technique scheme, the relative molecular weight of described dithiocarbamate is 150000 ~200000;Described microbial biofilm by thiobacillus denitrificans and mycocandida on the activated carbon through more than 48h Biofilm cultivates gained;In described kieselguhr, dioxide-containing silica is more than 90%.

Being improved to further technique scheme, in parts by mass, 10 parts of aluminum chloride, 90 parts of kieselguhr, iron sulfate 40 parts, dithiocarbamate 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.

Being improved to further technique scheme, in parts by mass, 10 parts of aluminum chloride, 80 parts of kieselguhr, iron sulfate 60 parts, dithiocarbamate 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.

Being improved to further technique scheme, in parts by mass, 15 parts of aluminum chloride, 150 parts of kieselguhr, iron sulfate 40 parts, dithiocarbamate 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.

The invention have the benefit that

1, the present invention can well reduce all kinds of pollutant levels in sewage, after treatment effeciency height, high treating effect, process Sewage can reach discharge standard, avoid environmental pollution, and each formulation properties of the present invention is stable, can play each other preferably Collaborative facilitation, promotes the most preferably to play scrubbing effect, improves treatment effect further, and each formula in the present invention is former Material, wide material sources, price are low, make the present invention have preferably marketization prospect.

2, in the present invention, kieselguhr has that body is light, matter is soft, porous, specific surface area are big, stable chemical nature and absorbability The feature such as strong, can the ability of dissolved organic matter in filtering function and absorption water, also there is coagulation simultaneously, can in sewage So that colloidal particles in sewage is mutually bondd and flock together the complex becoming stable, contain reducing the SS in sewage Amount, reduces Colority of Sewage Water.

Salt in aluminum chloride is present in water body, and part can be with the PO in sewage4 3-Reaction, generates calcium phosphate precipitation, part React with-the OH in water body and generate monomer core complex, Al (OH)2+, Al (OH)+and AlO2 -Deng, these complex can collide contracting Synthesis polynuclear complex, polynuclear complex specific surface area is big, have higher positive charge, accordingly, it is capable to band is negative in quick adsorption sewage The impurity of electric charge, thus neutralize colloidal electric charge, compression double electric layer and reduction § current potential, finally make the material such as float and colloid fast De-steady, the coagulation of speed and precipitation, to reach the removal of phosphorus.

Iron salt after iron sulfate is soluble in water, Fe3+Having carried out two-part reaction, a part is and PO simultaneously4 3-Form difficulty The salt of dissolubility, another part, by the hydrolysis dissolved and water suction formation is strong, can occur a series of during hydrolysis simultaneously Polyreaction, thus formed and have the polyhydroxy complex of longer linear structure, Fe2(OH)2+、Fe3(OH)4 5+, these materials Impurity that can be electronegative in absorption effluent, reaches dephosphorization, denitrogenates, reduces the function of BOD and COD.

Meanwhile, aluminum chloride and kieselguhr can form compounding coagulation agent, have synergism, and the existence of aluminum chloride can promote silicon Diatomaceous earth preferably plays coagulation function, and this compounding coagulation agent reaches as high as more than 90% to the removal rate of COD.Iron sulfate and chlorine Changing aluminum to compound, the coagulant hydrolysis after compounding can form multiple hydroxo complex, Fe2(OH)2+、Fe3(OH)4 5+、Aln (OH)m (3n-m)+(n > 1, m 3n) etc., when these polyhydroxy complex form proper ratio, can produce collaborative positive-effect, be formed More polyhydroxy complex, thus increase the absorbability to impurity electronegative in sewage.

Dithiocarbamate is a kind of efficient heavy chelating agen, uses polyamines or polymine and Carbon bisulfide Reaction obtains, and can react with the heavy metal ion in sewage, generates heavy metal chelating precipitation, due to the S atom of dithiocarboxy On have 3 pairs of lone pair electrons, wherein 2 to taking the empty d track of metal ion, forms coordinate bond, according to ligand field theory, d rail In the case of road sky entirely, be easily formed the structure of positive tetrahedron type, the most each electronics between mutually exclusive power little, and S atom Outer layer 4 electronics is also formed the positive tetrahedron configuration that repulsive interaction is little so that the heavy metal chelating of formation precipitation dimensionally stable.

Chitosan has wide material sources, does not results in secondary pollution, the advantage such as tasteless, alkaline-resisting, heat-resisting, corrosion-resistant, molecule Containing multiple hydroxyls and amino on chain, on the one hand, hydroxyl energy and metal ions M2+The inner complex salt of chela synthesizing stable, strengthens further Removing ability to metal ion, meanwhile, hydroxyl also can combine with the cationic surfactant in sewage, the opposing party Face ,-NH2Can be with H in water+Protonationization forms cationic polyelectrolyte, with the float in absorption effluent, plays flocculation effect Really, thus remove COD and SS in water.The third aspect ,-NH2Also iron sulfate and the polyhydroxy complex shape in aluminum chloride can be promoted Become, further increase the polyhydroxy complex absorbability to impurity electronegative in sewage.

Microorganism in microbial biofilm can make full use of the nitrogen oxides in sewage, sulfide etc. and synthesize as nutriment The organisms such as protein, thus realize the indexs such as TN, COD, the BOD in reduction sewage, meanwhile, microorganism is probiotics, will not Cause new pollution.

Sheet alkali is PH regulator, and nature sewage is faintly acid, and the PH of sewage can be adjusted to about 7.5, i.e. by sheet alkali Alkalescence level, on the one hand, meet sewage drainage standard, on the other hand, under weakly alkaline environment, micro-in microbial biofilm The pollutant such as the more preferable decomposing nitrogen oxide of bioenergy, sulfide, the third aspect, under weakly alkaline environment, kieselguhr is to a huge sum of money Belong to ion, as Cu, Cr, Pb, the Zn etc. in sewage have good adsorption, heavy metal ions in sewage can be reduced further Concentration.

3, the relative molecular weight of dithiocarbamate is 150000~200000, and molecular weight is the biggest, and sequestration rate is more Hurry up, form heavy metal chelating precipitation character the most stable;Microbial biofilm is in activity by thiobacillus denitrificans and mycocandida On charcoal, the biofilm through more than 48h cultivates gained, and thiobacillus denitrificans is obligate inorganization energy autotroph, in sulfur oxide compound Process obtains energy, and generates nitrogen with nitrate for electron acceptor, it is possible to the nitrogen source range of utilization is very wide, can be ammonia salt, Nitrate, nitrite and aminoacid etc., desulfurization denitrifying capacity is strong, and distribution is wide, strong adaptability, can move in alkalescence Environment, mycocandida is the genus in yeast, contributes to reducing COD and the BOD level in sewage, and is normal in animal intestinal The strain seen, does not results in secondary pollution;In described kieselguhr, dioxide-containing silica is more than 90%, and it is excellent that kieselguhr is embodied Different physicochemical property is mainly embodied by silicon dioxide, and dioxide-containing silica is high, and kieselguhr quality is the best, to pollutant Adsorption is the strongest, and the kieselguhr of dioxide-containing silica, and its individual particle particle is little, and specific surface area is big, and adsorption is good, scrubbing Ability is strong.

4 it is demonstrated experimentally that when aluminum chloride, kieselguhr, the mass ratio of iron sulfate three are 1:9:4, can be formed most many Hydroxo complex and oh group, polyhydroxy complex can increase the absorbability to impurity electronegative in sewage, significantly TP, COD, BOD content reduced in sewage;Oh group ionizes out H in aqueous simultaneously+, with SiO2In conjunction with so that silicon Diatomaceous earth surface is active, adsorptivity and surface elecrtonegativity, and surface elecrtonegativity current potential and diatomaceous specific surface area and aperture Size is relevant, and specific surface area is the biggest, and aperture is the least, and current potential is the biggest, and the existence of oh group can strengthen this specific surface area, thus Promote diatomaceous surface elecrtonegativity so that it is adsorptivity is more preferable.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is further illustrated.

Specific embodiment 1

Domestic sewage treating compound, in parts by mass, 10 parts of aluminum chloride, 90 parts of kieselguhr, 40 parts of iron sulfate, dithiocarbamates Formic acid esters 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.

In the present embodiment, the relative molecular weight of dithiocarbamate is 180000, and microbial biofilm is by denitrogenation Thiobacillus and mycocandida are on the activated carbon through the biofilm cultivation gained of more than 48h, and in kieselguhr, silicon dioxide is 95%.

Specific embodiment 2

Domestic sewage treating compound, in parts by mass, 10 parts of aluminum chloride, 80 parts of kieselguhr, 60 parts of iron sulfate, dithiocarbamates Formic acid esters 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.

In the present embodiment, the relative molecular weight of dithiocarbamate is 180000, and microbial biofilm is by denitrogenation Thiobacillus and mycocandida are on the activated carbon through the biofilm cultivation gained of more than 48h, and in kieselguhr, silicon dioxide is 95%.

Specific embodiment 3

Domestic sewage treating compound, in parts by mass, 15 parts of aluminum chloride, 150 parts of kieselguhr, 40 parts of iron sulfate, dithio ammonia Carbamate 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.

In the present embodiment, the relative molecular weight of dithiocarbamate is 180000, and microbial biofilm is by denitrogenation Thiobacillus and mycocandida are on the activated carbon through the biofilm cultivation gained of more than 48h, and in kieselguhr, silicon dioxide is 95%.

Each formula source in the present invention is as shown in table 1.

Experimentation

Take the sanitary sewage of Dongguan City community, each pollutant levels in detection water inlet, then put into specific embodiment respectively 1, the domestic sewage treating compound in specific embodiment 2 and specific embodiment 3, stirs, mixes, after pollutant fully precipitate, and inspection Measuring each pollutant levels in water, pollutant project and detection method are as shown in table 2.

Testing result is as shown in table 3.

Interpretation of result:

1, as can be seen from the above table, each pollutant in sewage is all had preferably by the domestic sewage treating compound of the present invention Removal rate, high treating effect, treatment effeciency are high, and sanitary sewage after treatment reaches what Minstry of Housing and Urban-Rural Development of People Republic of China (MOHURD) formulated in 1999 Primary standard A standard in " sewage enters municipal sewage system water standard " (CJ3082--1999), is avoided that sewage is directly arranged Put the environmental pollution caused.

2, from specific embodiment 1, specific embodiment 2 and specific embodiment 3 treatment effect contrast, when aluminum chloride, When kieselguhr, the mass ratio of iron sulfate three are 1:9:4, now wastewater treatment efficiency is best, and this is primarily due to work as iron sulfate Or aluminum chloride excess, multiple steady again after flco can be caused to take off surely so that COD removal rate reduces, and production cost can be caused to increase, and Due to iron sulfate or aluminum chloride all in faintly acid, excess can cause the PH of entirety to reduce, and is unfavorable for other composition merits of the present invention The performance of energy.

Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (5)

1. domestic sewage treating compound, it is characterised in that: in parts by mass, aluminum chloride 5~15 parts, kieselguhr 60~150 parts, sulphuric acid Ferrum 20~60 parts, dithiocarbamate 5~15 parts, chitosan 5~10 parts, sheet alkali 3~8 parts, microbial biofilm 2~6 Part.
Domestic sewage treating compound the most according to claim 1, it is characterised in that: described dithiocarbamate relative Molecular weight is 150000~200000;Described microbial biofilm is at activated carbon by thiobacillus denitrificans and mycocandida On through more than 48h biofilm cultivate gained;In described kieselguhr, dioxide-containing silica is more than 90%.
Domestic sewage treating compound the most according to claim 2, it is characterised in that: in parts by mass, 10 parts of aluminum chloride, diatom 90 parts of soil, 40 parts of iron sulfate, dithiocarbamate 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.
Domestic sewage treating compound the most according to claim 2, it is characterised in that: in parts by mass, 10 parts of aluminum chloride, diatom 80 parts of soil, 60 parts of iron sulfate, dithiocarbamate 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.
Domestic sewage treating compound the most according to claim 2, it is characterised in that: in parts by mass, 15 parts of aluminum chloride, diatom 150 parts of soil, 40 parts of iron sulfate, dithiocarbamate 10 parts, chitosan 8 parts, 5 parts of sheet alkali, microbial biofilm 4 parts.
CN201610682489.4A 2016-08-17 2016-08-17 Domestic sewage treating compound CN106315861B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106865783A (en) * 2017-03-05 2017-06-20 张红卫 A kind of efficient domestic sewage treating compound and preparation method thereof
CN107175081A (en) * 2017-05-04 2017-09-19 浙江清天地环境工程有限公司 A kind of modification infusorial earth and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101182512A (en) * 2007-08-01 2008-05-21 江苏省嘉庆水务发展有限公司 Biology diatom water treatment agent and method of producing the same
US20140056976A1 (en) * 2012-08-27 2014-02-27 Allan D. Pronovost Methods and compositions for heavy metal removal and for oral delivery of desirable agents
CN103641247A (en) * 2013-12-27 2014-03-19 姚为 Domestic sewage treatment agent and preparation method thereof
CN103708631A (en) * 2013-12-27 2014-04-09 姚为 Multifunctional sewage treatment agent and preparation method thereof
CN105399216A (en) * 2015-12-18 2016-03-16 苏州市金星工艺镀饰有限公司 Treating agent composition of chromium-containing waste water
CN105776576A (en) * 2016-05-26 2016-07-20 许婷 Papermaking wastewater treating agent and preparing method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101182512A (en) * 2007-08-01 2008-05-21 江苏省嘉庆水务发展有限公司 Biology diatom water treatment agent and method of producing the same
US20140056976A1 (en) * 2012-08-27 2014-02-27 Allan D. Pronovost Methods and compositions for heavy metal removal and for oral delivery of desirable agents
CN103641247A (en) * 2013-12-27 2014-03-19 姚为 Domestic sewage treatment agent and preparation method thereof
CN103708631A (en) * 2013-12-27 2014-04-09 姚为 Multifunctional sewage treatment agent and preparation method thereof
CN105399216A (en) * 2015-12-18 2016-03-16 苏州市金星工艺镀饰有限公司 Treating agent composition of chromium-containing waste water
CN105776576A (en) * 2016-05-26 2016-07-20 许婷 Papermaking wastewater treating agent and preparing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106865783A (en) * 2017-03-05 2017-06-20 张红卫 A kind of efficient domestic sewage treating compound and preparation method thereof
CN107175081A (en) * 2017-05-04 2017-09-19 浙江清天地环境工程有限公司 A kind of modification infusorial earth and preparation method thereof

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