CN101844820A - Environmental functional material for emergency control of black water cluster - Google Patents

Abstract

The invention discloses an environmental functional material for emergency control of black water cluster. The material comprises the following components in percentage by mass: 65 to 85 percent of diatomite, modified diatomite, bentonite, modified bentonite, attapulgite, modified attapulgite, kaolin, modified kaolin, modified sepiolite, clay and/or modified clay, 14 to 30 percent of sodium percarbonate and 1 to 5 percent of chitosan. The material has the advantages of convenient use and good treatment effect and can be used independently or matched with other water treatment agents. The produced floccule has a large particle size and dense structure; the settling time is shortened; and the material can effectively improve the indexes such as COD, ammonia nitrogen, phosphorus, chrominance, peculiar smell and the like of a water body. The material is difficult to produce secondary pollution. The required equipment is simple and the operation is convenient, so the material is applicable for the emergency treatment of the black water cluster.

Description

The environment functional material that is used for the general emergent control in lake

Technical field

The present invention relates to lake general (Heisui River group) in the water body rapid flocculation, absorption, precipitation, sterilize, eliminate the unusual smell, emergent control techniques such as purification, be a kind of multi-functional environment friendly materials that is applied to the emergent control in lake general (Heisui River group) specifically.

Background technology

The lake is general to be meant that algae assembles in a large number at bank, lake, river mouth and Hu Cha, dead, the rotten decomposition of oxygen consumption fast, when water temperature variation etc. causes overturn, general on the residual body of sedimentary algae, mud and the degradation production thereof, cause the intensification of lake water colourity even present black, and the phenomenon that gives an offensive smell.

General serious lake region, lake black foul sewage water body occurs through regular meeting, and sewage group is along with water body mobile dilution diffusion, and color and luster shoals gradually, and finally returns to normal.About 5-10 days general time length of lake, though its time lasting and influence is not long, tends to cause the rapid decline of water body dissolved oxygen, causes all kinds of biological deaths by suffocation in the water body in lake, make nutrient concentration such as water body nitrogen phosphorus exceed normal water body 5-6 doubly, sometimes even reach tens of times; Incomplete degraded often takes place in a large amount of organic matters in general district, the lake water body, produce as repugnant substances such as dimethyl sulphide, Methyl disulfide, dimethyltrisulfide, indoles, general district, lake people life and local socio-economic development are constituted more and more serious threat, therefore, to the emphasis and the difficult point of the current lake treatment of lake general control having become.

The general generation in lake is the direct result of lake eutrophication, algae " wawter bloom " outburst, therefore, at present for the general control in lake, has used for reference the control and the treatment process of algae " wawter bloom " to a great extent.The Emergency management of the removal of domestic Dian Chi algae, the XuanWu Lake, Nanjing wawter bloom has all been used organic or inorganic flocculation agent modified clay or natural mineral, to improve the removal effect of algae.People such as Chengxin Fan have confirmed the feasibility of cetyl trimethylammonium bromide (CTAB) modified clay removal Taihu Lake algal bloom, and analyzed enhanced flocculation mechanism [the Guofeng Liu of CTAB modified clay from microtexture, Chengxin Fan, JichengZhong, et al.Using hexadecyl trimethyl ammonium bromide (CTAB) modifiedclays to clean the Microcystis aeruginosa blooms in Lake Taihu, China[J] .Harmful Algae, 2010,9:413-418]; People such as Beaulieu have studied control method [the Stace E Beaulieu that removes the harmful algae wawter bloom with clay, polymerize aluminum chloride (PAC) modified clay, Mario R Sengco, Donald M Anderson.Using clay to control harmful algalblooms:deposition and resuspension of clay/algal flocs[J] .HarmfulAlgae, 2005,4:123-138.]; People such as Xiao Lijuan then are the HA1 flocculation agent control wawter bloom of core with the molysite, and in the emergence treatment scheme of the service reservoir in south China, blue-green algae had removal effect [Xiao Lijuan preferably, Han Boping, Lin Qiuqi, the applied research [J] of thunder wintersweet .HA1 flocculation agent in the emergency processing of service reservoir wawter bloom. environmental science, 2007,28 (10): 2192-2197.].But compare with the enhanced flocculation technology of algae, conventional organic or inorganic flocculation agent modified clay or natural mineral have flocculation, settling property preferably for " wawter bloom ", the harm of lake but general (Heisui River group) is mainly reflected in lower dissolved oxygen concentration and peculiar smell, and the enhanced flocculation that organic or inorganic flocculation agent modified clay or natural mineral show is for improving the water body dissolved oxygen and the effect and not obvious that eliminates the unusual smell.At present, eutrophication and " wawter bloom " are being difficult to be necessary to study a series of Emergency management measures under the situation of effectively control,, are alleviating the general harm in lake so that during general outburst, in time adopt an effective measure in the lake.Such as in some important function of water body districts, as the tap water seedbed, should in time remove the residual body of " wawter bloom " algae of alluvial, eliminate and cause the general material in lake.

Summary of the invention

In order to address the above problem, the invention provides a kind of environment functional material that is used for the general emergent control in lake.By the smart soil of powdery natural minerals diatomite, wilkinite, attapulgite, kaolin, sepiolite, clay or their modification (is referred to modifications processing such as high-temperature activation, acidifying, inorganic salt mineralising, can obtain by procurement of commodities, as Nanjing Ai Lunte Chung In, Shengzhou city China power diatomite product company limited, Hangzhou Jin He environment water-purifying material company limited etc.), green macromolecular material chitosan, SPC-D mix according to a certain percentage, makes a kind of environment functional material that is applied to the emergent control in lake general (Heisui River group) efficiently.

Realize that the technical scheme that purpose of the present invention is taked is:

The environment functional material that is used for the general emergent control in lake, each constituent mass per-cent is:

Diatomite, modification infusorial earth, wilkinite, modified alta-mud, attapulgite, attapulgite modified, kaolin, modified kaolin, modified meerschaum, clay and/or modified clay 65～85%;

SPC-D 14-30%;

Chitosan 1-5%.

Its using method is: according to size, wind direction and wind-force, organism kinds and the concentration thereof of spot, lake general (Heisui River group), lake general (Heisui River group), add an amount of environment functional material of the present invention, the floc particle that generates is big, flco is closely knit, settling time is short, can effectively improve indexs such as water body COD, ammonia nitrogen, phosphorus, colourity, peculiar smell.

The present technique invention can be passed through coagulation under normal temperature, low temperature, repugnant substances such as the dimethyl sulphide that produces in the absorption lake general (Heisui River group), Methyl disulfide, dimethyltrisulfide, indoles; Chitosan in the matrix material can be realized the function of enhanced flocculation; SPC-D is commonly called as the solid hydrogen peroxide, is the addition compound of hydrogen peroxide and yellow soda ash, produces oxygen after the decomposition, water and yellow soda ash, and its effective active institute content is equivalent to 27.5% hydrogen peroxide.SPC-D not only has the function of liquid hydrogen peroxide, functions such as thereby rapid decomposition discharges oxygen realization bleaching, decontamination, sterilization under lower water temperature, eliminate the unusual smell, and the resolvent of SPC-D, be that oxygen, water and yellow soda ash are the materials that exists in the natural water body, environment is not had any negative impact.

The present invention can be adsorbed the nonpolar organic matter in the lake general (Heisui River group), the organism of polar organic matter and all kinds of poisonous and difficult for biological degradation, pollutent is adsorbed fast, the physics flocculation, precipitation, diatomite in addition, wilkinite, attapulgite, kaolin, sepiolite, the smart soil of clay or their modification etc. has higher surface area and huge pore volume and stronger adsorptive power, trickle and material superfine is adsorbed onto its surface the organism in lake general (Heisui River group) and inorganics, form chain structure and sinking fast, separate with water body, have reduction COD simultaneously, denitrogenation dephosphorizing, decolouring, oxygenation, function such as eliminate the unusual smell.

The present invention is easy to use, and treatment effect is good.Can use separately, also can be used with other water conditioner.The floc particle that generates is big, flco is closely knit, has shortened the settling time, can effectively improve indexs such as water body COD, ammonia nitrogen, phosphorus, colourity, peculiar smell.Be difficult for producing secondary pollution.Required equipment is simple, and is easy to operate, can be suitable for the emergency processing of lake general (Heisui River group).

Embodiment

Below in conjunction with embodiment, the present invention is elaborated.

Embodiment 1

65% diatomite, 30% SPC-D and 5% chitosan add in the mixer according to aforementioned proportion, mix 1 hour, obtain being applied to the environment functional material of the general emergent control in lake.

Embodiment 2

40% modification infusorial earth, 30% wilkinite, 29% SPC-D and 1% chitosan add in the mixer according to aforementioned proportion, mix 2 hours, obtain being applied to the environment functional material of the general emergent control in lake.

Embodiment 3

50% diatomite, 15% modified alta-mud, 10% attapulgite, 22% SPC-D and 3% chitosan add in the mixer according to aforementioned proportion, mix 3 hours, obtain being applied to the environment functional material of the general emergent control in lake.

Embodiment 4

20% modification infusorial earth, 10% wilkinite, 20% attapulgite modified, 28% kaolin, 17% SPC-D and 5% chitosan add respectively in the mixer, mix 4 hours, obtain being applied to the environment functional material of the general emergent control in lake.

Embodiment 5

20% diatomite, 10% modified alta-mud, 20% attapulgite, 20% modified kaolin, 10% sepiolite, 15% SPC-D and 5% chitosan add in the mixer respectively, mixed 5 hours, and obtained being applied to the environment functional material of the general emergent control in lake.

Embodiment 6

20% modification infusorial earth, 10% wilkinite, 20% attapulgite modified, 20% kaolin, 10% modified meerschaum, 5% clay, 12% SPC-D and 3% chitosan add in the mixer respectively, mixed 6 hours, and obtained being applied to the environment functional material of the general emergent control in lake.

Embodiment 7～embodiment 21 sees Table 1.

Table 1

Embodiment	??7	??8	??9	??10	??11	??12	??13	??14	??15	??16	??17	??18	??19	??20	??21
																Diatomite %													??60
Modification infusorial earth %	??5									??20					??40
																Wilkinite %	??60		??50		??20
Modified alta-mud %		??33		??20
																Attapulgite %		??33		??20		??40		??50
Attapulgite modified %			??10		??20		??50		??30
																Kaolin %			??7		??10		??22			??57		??40
Modified kaolin %				??20				??10	??30		??40
																Sepiolite %				??9				??12			??40		??23
Modified meerschaum %					??10				??10			??22		??44
																Clay %					??10				??6			??20			??45

Embodiment	??7	??8	??9	??10	??11	??12	??13	??14	??15	??16	??17	??18	??19	??20	??21
																Modified clay %						??31								??40
SPC-D %	??30	??29	??28	??27	??26	??25	??25	??23	??21	??21	??18	??16	??16	??15	??14
																Chitosan %	??5	??5	??5	??4	??4	??4	??3	??3	??3	??2	??2	??2	??1	??1	??1
Mixing time/h	??1	??2	??3	??4	??5	??6	??7	??8	??1	??2	??3	??4	??5	??6	??8

Claims (1)

1. the environment functional material that is used for the general emergent control in lake, each constituent mass per-cent is:

Diatomite, modification infusorial earth, wilkinite, modified alta-mud, attapulgite, attapulgite modified, kaolin, modified kaolin, modified meerschaum, clay and/or modified clay 65～85%;

SPC-D 14-30%;

Chitosan 1-5%.