CN105271529A

CN105271529A - Sewage biological purification agent

Info

Publication number: CN105271529A
Application number: CN201410311822.1A
Authority: CN
Inventors: 严兴扬
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-07-03
Filing date: 2014-07-03
Publication date: 2016-01-27

Abstract

The invention discloses a sewage biological purification agent comprising the following components, by weight: 50-100 parts of a carrier, 1-20 parts of a biological growth stimulant, and 10-150 parts of a biological nutritional agent. The carrier is any one or more selected from diatomaceous earth, activated carbon and zeolite powder. The biological growth stimulant is a mixture of a rare earth element compound and iron salt with a weight ratio of 1: (1-10). The biological nutritional agent is a mixture of glucose and acetate with a weight ratio of (1-20): (1-60), wherein the rights of glucose and sodium acetate are respectively calculated according to the weight of carbon element. The rare earth element compound is one or more selected from nitrate or chloride of lanthanum, cerium and rubidium. The sewage biological purification agent is used in the middle-late section of an active sludge treatment structure, and is used for improving active sludge activity and thus improving the purification effect.

Description

Saprobia scavenging agent

Technical field

The present invention relates to a kind of medicament of sewage purification, particularly relate to saprobia scavenging agent.

Background technology

Activated sludge process is the main stream approach of purification of waste water.Its technique is simple, runs manipulation more for convenience, is used widely in purification of waste water.Along with the development of modern industry in recent years, make the waste water containing various toxic organic pollutant increasing, purification difficulty is very large.The particularly development of industrial park, the waste component of collection is complicated, and biodegradability difference is very large.For dyeing synthetic wastewater, both containing easy biochemical degradation pollutents such as starch in waste water, also containing bio-refractory pollutents such as dyestuffs.(traditional plug-flow type active sludge method is comprised in activated sludge purification technique, A/A/O technique, MBR technique etc.) in, in order to reach higher clearance to Wastewater Pollutant, usual employing extends the way of the residence time, residence time of activated sludge tank can reach 16 ~ 48 hours even more.Under the longer residence time, can be degraded rapidly in biochemical reactor front end by biochemical substances, and the degraded of difficult biochemical substances needs the longer residence time, quite a few is just degraded in the rear end of reactor.And in the rear end of reactor, because easy biochemical degradation material has obtained abundant degraded, causing the available concentration of substrate of microorganism to reduce, microbic activity is deteriorated, and degradation capability is deteriorated.In addition, some artificial synthetic organic materials is as halogenated organic matters etc., and microorganism not bear utilizes it to degrade as sole substrate, only has by co-metabolic degradation effect, just can complete degraded with the addition of primary energy material (as glucose etc.).

Rare earth element comprises lanthanon (Lanthanide represents with Ln) in IIIB race element and atomic radius of the same clan or the outer electronic structure scandium (Sc) similar to lanthanon and yttrium (Y), totally 17 kinds of elements.According to some difference of physicochemical property and chemical property of the earth between rare earth element and the requirement of separating technology, often rare earth element is divided into light rare earths and heavy rare earths two class.Rare earth element has special Hormesis biological effect, show as accelerating effect when it is characterized in that low dosage and high dosage time show as restraining effect.Research as Yang Yuangen, Chu Haiyan etc. shows, lower concentration lanthanum utilizes 14C glucose to carry out respiration to soil microorganisms stimulatory effect, and high density lanthanum then produces suppression.Namely the present invention utilizes rare earth element under low consistency conditions, promote the principle of microorganism active, and synchronous interpolation primary energy material, in order to microbic activity in enhanced activity sewage sludge reactor, thus improves the overall decontamination effect improving of biological purifying process.

Summary of the invention

The object of the invention is the above-mentioned shortcoming for overcoming current sewage purification medicament.

For achieving the above object, the technical solution used in the present invention is as follows:

A kind of saprobia scavenging agent is provided, comprises the component of following parts by weight: 50 ~ 100 parts, carrier, biological growth stimulant 1 ~ 20 part, biological nutritive agent 10 ~ 150 parts; Described carrier is any one or a few in diatomite, gac and zeolite powder; Described biological growth stimulant is that the compound of rare earth element and molysite are by weight 1:(1 ~ 10) mixture; Described biological nutritive agent be glucose and acetate by weight (1 ~ 20): the mixture of (1 ~ 60); The weight of above-mentioned glucose and sodium acetate presses the weighing scale of carbon respectively; Wherein, described rare-earth compound is any one or a few in the nitrate of lanthanum, cerium and rubidium or villaumite.

Phosphoric acid salt is added in described biological nutritive agent.

Described biological nutritive agent is glucose, acetate and phosphoric acid salt by weight (1 ~ 20): (1 ~ 60): the mixture of (1 ~ 10); The weight of above-mentioned glucose and sodium acetate presses the weighing scale of carbon respectively; Above-mentioned phosphatic weight presses the weighing scale of phosphoric.

The present invention compared with prior art, has following advantage:

1) make full use of the absorption property of carrier (gac, diatomite etc.), while supporting rare earth, can also hard-degraded substance be adsorbed, and the growth of energy attached microbial.Thus on carrier, define the microenvironment of synchronous enrichment rare earth, pollutent and microorganism, be conducive to the fast degradation of pollutent.

2) diatomaceous true density is comparatively large, and there is good flocculating property in county again simultaneously, is conducive to the settling property improving active sludge, prevents sludge loss in water body.Meanwhile, because diatomite has good settling property, make the rare earth element of institute's load can be retained in less loss in activated sludge reactor fully, thus realize making full use of of rare earth element.

3) in the posterior segment of activated sludge reactor, due to lower concentration of substrate, microorganism active is suppressed.Adding merely rare earth improves limited to decontamination effect improving.Therefore in scavenging agent, the easily biochemical degradation material such as glucose, acetate is compounded with, for microorganism active is recovered to provide matrix.Thus formation rare earth element and glucose are to bioactive associating promoter action, stimulate microbial growth, also can play the co-metabolic degradation effect of microorganism to biorefractory organic.

4) in activated sludge reactor, supplement the carbon sources such as glucose, also can play the effect increasing denitrification effect.

5) in biological growth stimulant, supplement molysite, not only can meet biological growth needs, also can improve the settling property also effectively dephosphorization of active sludge.

Embodiment

Below by embodiment, the invention will be further described.

Embodiment 1

A kind of saprobia scavenging agent, comprise the component of following parts by weight: 80 parts, diatomite, biological growth stimulant 10 parts (Lanthanum trichloride and iron(ic) chloride are by weight the mixture of 1:5), biological nutritive agent 90 parts (, by weight the mixture of 10:50, the weight of glucose and acetate presses the weighing scale of carbon respectively for glucose and acetate);

Preparation method:

(1) Lanthanum trichloride and the iron(ic) chloride ratio by weight 1:5 mixed, composition biological growth stimulant, by water-soluble for the biological growth stimulant of 10 parts, is made into the solution that total concn is 0.Imol/L;

(2) diatomite of 80 parts to be impregnated in the solution that step (1) obtains 5 hours, to dry to constant weight roasting 5h at 600 DEG C again, make scavenging agent first product for 80 DEG C;

(3) by glucose and the acetate mixture composition biological nutritive agent by weight 10:50, the weight of glucose and acetate presses the weighing scale of carbon respectively;

(4) the scavenging agent first product that the biological nutritive agent 90 parts step (3) obtained and step (2) obtain mixes, i.e. obtained scavenging agent finished product.

Embodiment 2

A kind of saprobia scavenging agent, comprise the component of following parts by weight: gac 60 parts, biological growth stimulant 20 parts (cerous nitrate and iron nitrate are by weight the mixture of 1:5), (glucose, acetate and phosphoric acid salt are by weight the mixture of 1:10:5 for biological nutritive agent 120 parts, the weight of glucose and acetate presses the weighing scale of carbon respectively, and phosphatic weight is with the weighing scale of phosphoric);

Preparation method:

(1) cerous nitrate and the iron nitrate ratio by weight 1:5 mixed, composition biological growth stimulant, by water-soluble for the biological growth stimulant of 20 parts, is made into the solution that total concn is 0.05mol/L;

(2) gac of 120 parts to be impregnated in the solution that step (1) obtains 2 hours, to dry to constant weight roasting 3h at 500 DEG C again, make scavenging agent first product for 100 DEG C;

(3) glucose, acetate and phosphoric acid salt are mixed by weight 20:10:1, the weight of above-mentioned glucose and acetate presses the weighing scale of carbon respectively, and phosphatic weight is with the weighing scale of phosphoric;

(4) the scavenging agent first product that the biological nutritive agent 60 parts step (3) obtained and step (2) obtain mixes, i.e. obtained scavenging agent finished product.

Claims

1. a saprobia scavenging agent, is characterized in that: the component comprising following parts by weight: 50 ~ 100 parts, carrier, biological growth stimulant 1 ~ 20 part, biological nutritive agent 10 ~ 150 parts; Described carrier is any one or a few in diatomite, gac and zeolite powder; Described biological growth stimulant is that the compound of rare earth element and molysite are by weight 1:(1 ~ 10) mixture; Described biological nutritive agent be glucose and acetate by weight (1 ~ 20): the mixture of (1 ~ 60); The weight of above-mentioned glucose and sodium acetate presses the weighing scale of carbon respectively; Wherein, described rare-earth compound is any one or a few in the nitrate of lanthanum, cerium and rubidium or villaumite.

2. saprobia scavenging agent according to claim 1, is characterized in that adding phosphoric acid salt in described biological nutritive agent.

3. saprobia scavenging agent according to claim 2, is characterized in that described biological nutritive agent is glucose, acetate and phosphoric acid salt by weight (1 ~ 20): (1 ~ 60): the mixture of (1 ~ 10); The weight of above-mentioned glucose and sodium acetate presses the weighing scale of carbon respectively; Above-mentioned phosphatic weight presses the weighing scale of phosphoric.