CN111807488A - Technical method for preparing ecological environment-friendly composite water treatment agent by large solid waste complexing agent - Google Patents
Technical method for preparing ecological environment-friendly composite water treatment agent by large solid waste complexing agent Download PDFInfo
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- CN111807488A CN111807488A CN202010764349.8A CN202010764349A CN111807488A CN 111807488 A CN111807488 A CN 111807488A CN 202010764349 A CN202010764349 A CN 202010764349A CN 111807488 A CN111807488 A CN 111807488A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
Abstract
A technical method for preparing an ecological environment-friendly composite water treatment agent by using a large amount of solid waste complexing agent belongs to the technical field of environment-friendly engineering. The invention is prepared by a large amount of solid waste complexing body, a plant and an attachment and a mineral bonding body; the complex of bulk solid wastes is prepared by mixing, crushing, grinding and alkaline excitation of blast furnace slag powder, red mud and fly ash, or electrolytic stone slag, red mud and iron tailing powder, the plant attached body is prepared by mixing, crushing and soaking shaddock peel, corncob, bagasse, reed, cattail and hyacinth anemone rhizome, and the mineral bonded body is prepared by mixing, crushing and grinding eggshell, starch, zeolite, sepiolite and diatomite. The preparation method and the components are determined according to the characteristics of sewage to be treated. Compared with the water treatment agent commonly used at home and abroad at present, the water treatment agent prepared by the invention has the characteristics of economy, high efficiency, high ecological safety, wide application range, no secondary pollution and environmental friendliness.
Description
Technical Field
The invention belongs to the technical field of resource utilization of bulk solid waste, and particularly relates to a technical method for preparing an ecological environment-friendly composite water treatment agent by using a bulk solid waste complexing agent.
Background
With the deep promotion of ecological civilization construction and the continuous improvement of environmental protection requirements, the recycling of bulk solid waste materials is increasingly important. Changing waste into resources and changing bundle into wealth are necessary routes for recycling bulk solid waste and are urgent requirements for ecological civilization construction. Meanwhile, with the rapid development of social economy in China, the discharge of a large amount of sewage not only sharply increases the dosage of the water treatment agent, but also puts higher requirements on the performance of the water treatment agent. As for the whole production and application condition of the water treatment agent in China at present, the water treatment agent has some defects which are mainly shown as follows: the existing inorganic water treatment agent has the advantages of single function, limited applicable water body range, large using amount, large floc amount, low sedimentation speed, difficult sludge dewatering and high final sludge treatment cost, and particularly, aluminum ions remained in the water body form potential harm to plants, aquatic organisms and human bodies; the organic synthetic high molecular water treatment agent, such as polyacrylamide, has high production cost and great harm to human health in the production and synthesis process, most of the high molecular water treatment agent is difficult to degrade by the environment after being used, is accumulated in a large amount in the natural environment and exists for a long time, generates secondary pollution to the environment, and a small part of the high molecular water treatment agent can be degraded into small molecules, such as acrylamide monomers, but has strong toxicity and carcinogenicity. It can be said that the ecological insecurity and the secondary pollution problem caused by the environment, which are shown by the existing inorganic water treatment agent and organic artificially synthesized high molecular water treatment agent, have attracted more and more attention and worry of people in the production or use process. Therefore, the vigorous development and development of ecological, safe and environment-friendly composite water treatment agents become a consensus. How to effectively protect the environment at a higher level and how to make the water treatment agent change from low molecules to high molecules, from single type to composite type, and from secondary pollution to safety and environmental protection, has become a very important research topic in the field of water treatment engineering.
The ecological environment-friendly composite water treatment agent is prepared by using the large solid waste complexing agent, so that a new way for recycling large solid waste is effectively developed, and the aim of treating waste by waste is fulfilled.
Disclosure of Invention
The invention aims to prepare a water treatment agent which is economic, efficient, high in ecological safety, wide in application range, free of secondary pollution and environment-friendly by utilizing a large amount of solid waste complexing agents, and particularly provides a technical method for preparing an ecological environment-friendly composite water treatment agent by using the large amount of solid waste complexing agents.
The purpose of the invention is realized as follows: the invention is prepared from a large amount of solid waste complexing body, a plant adhering body and a mineral bonding body, wherein the large amount of solid waste complexing body is prepared by mixing, crushing, grinding and alkaline excitation of blast furnace slag powder, red mud and fly ash or electrolytic stone slag, red mud and iron tailing powder, the plant adhering body is prepared by mixing, crushing and soaking shaddock peel, corncob, bagasse, reed, cattail and hyacinth, and the mineral bonding body is prepared by mixing, crushing and grinding eggshell, starch, zeolite, sepiolite and diatomite, and the preparation technical method and the components are as follows:
(1) when the method is used for treating sewage, the method comprises the following steps and technical methods: mixing and crushing 15-30% of blast furnace slag powder, 35-55% of red mud and 20-45% of fly ash of a large solid waste complexing agent according to mass percentage, grinding the mixture to 150-250 meshes at a temperature of above 70 ℃, adding 1.0-8.0% of sodium hydroxide for alkaline excitation, uniformly stirring, and curing for 18-25 hours under natural conditions to obtain a large solid waste complexing agent powder A; secondly, mixing and beating 15-25% of shaddock peel, 10-15% of corncob, 20-25% of bagasse, 20-30% of reed, 10-15% of typha and 5-10% of hyacinth bean according to mass percentage ratioCrushing and stirring, soaking for 10-15 days by using deionized water, and concentrating the soaking solution to obtain slurry A with the concentration of 20-35%; thirdly, mixing, crushing and stirring 20-35% of eggshell, 25-35% of starch, 15-25% of zeolite, 10-15% of sepiolite and 10-15% of diatomite of the mineral bonding body according to mass percentage, and stirring at the temperature of 150 DEG C0~3500Grinding to 350-450 meshes under the condition of C, and uniformly stirring to obtain powder B; fourthly, adding 35 to 50 percent of concentrated solution slurry A prepared by the method III and 40 to 70 percent of powder B prepared by the method III into a high-speed kneader according to the mass percentage, and heating the mixture to 150 percent0~1900C, stirring for 25-30 minutes, and curing for 12-20 hours under natural conditions to obtain slurry B; fifthly, stirring and mixing the powder A prepared by 35-50% of the large solid waste complexing agent and the slurry B prepared by 45-70% by the method, adding 0.3-1.8% of the composite foaming agent, stirring for 25-30 minutes, pouring into a spherical mold, demolding and drying to obtain the ecological environment-friendly composite water treatment agent for sewage treatment;
(2) when the method is used for treating a water body of a river water source, the method comprises the following steps and technical methods: mixing and crushing 25-35% of electrolytic stone slag, 25-35% of red mud and 30-45% of iron tailing powder of a large solid waste complexing agent according to mass percentage, grinding the mixture to 120-200 meshes at a temperature of over 90 ℃, adding 2.0-5.0% of sodium silicate for alkali excitation, uniformly stirring the mixture, and curing the mixture for 15-20 hours under natural conditions to obtain a large solid waste complexing agent powder A; secondly, mixing, smashing and stirring 25-45% of shaddock peel, 10-15% of corncob, 10-15% of bagasse, 30-40% of reed and 5-10% of hyacinth bean according to mass percentage ratio, soaking the mixture in deionized water for 10-15 days, and concentrating the soaking solution to obtain slurry A with the concentration of 20-35%; thirdly, mixing, crushing and stirring 10-20% of eggshell, 15-20% of starch, 15-25% of zeolite, 20-30% of sepiolite and 20-30% of diatomite according to mass percentage ratio, and stirring at 120 DEG C0~2500C, grinding to 350-450 meshes under the condition of C, and uniformly stirring to obtain powder B; fourthly, adding 35 to 50 percent of concentrated solution slurry A prepared by the method III and 40 to 70 percent of powder B prepared by the method III into a high-speed kneader according to the mass percentage, and heating the mixture to 150 percent0~1900C stirring for 25-30 minutes, andcuring for 12-20 hours under the condition to obtain slurry B; fifthly, stirring and mixing 45-70% of bulk solid waste complexing agent powder A prepared by the first step and 35-50% of slurry B prepared by the fourth step, adding 0.2-1.5% of composite foaming agent, stirring for 25-30 minutes, pouring into a spherical mold, demolding and drying to obtain the ecological environment-friendly composite water treatment agent for treating the water body of the river water source.
When the water treatment agent is used for sewage treatment, the adding amount of the water treatment agent is 0.5-2.5% of the mass of the sewage, and the water treatment agent is fully stirred and mixed after being put into use.
When the water treatment agent is used for water source water body treatment, the adding amount of the water treatment agent is 0.3-1.5% of the mass of the water body, and the water treatment agent is fully stirred and mixed after being put into use.
The working principle of the invention is as follows: when the ecological composite environment-friendly water treatment agent is added into sewage and rapidly diffused into a water body under high-speed stirring, the unbalanced potential on the surface of the water treatment agent neutralizes the charge potential of suspended ions, so that the repulsive potential of the suspended ions is weakened, colloidal substances, suspended solids and partially dissolved substances and the water treatment agent form floccules or agglomerate into larger floccules due to the effects of bonding, net catching, rolling and sweeping and the like, and fine substances, viruses, metal ions and the like in the sewage are adsorbed to the surface and the inside of pores due to the huge surface area, the nano-micropore volume and the strong adsorption force of the water treatment agent. Meanwhile, the water treatment agent releases allelochemicals which have the function of inhibiting or killing algae, and the allelochemicals can kill the algae in the sewage on one hand and inhibit the growth of the algae on the other hand. Then the floccule particles are rapidly precipitated under the action of gravity and separated from the treated clean water body. Thereby removing turbidity, chroma, organic matters, inorganic matters and algae of the water body.
Compared with the water treatment agent commonly used at home and abroad at present, the invention has the following beneficial effects:
(1) the preparation process is simple, complex equipment is not needed, the production period is short, the operation is simple, and the production cost is low.
(2) The water treatment agent prepared by the invention has the advantages of excellent flocculation performance, strong adsorbability, small dosage, high flocculation speed, large alum floc size, high floc settling speed and short clarification time.
(3) The water treatment agent prepared by the invention can be used for water treatment of industrial sewage, domestic sewage and agricultural water-removing, and can also be used for water treatment of domestic water source water bodies and water treatment of urban water supply.
(4) The water treatment agent prepared by the invention can be recycled and reused repeatedly for a long time, and has the characteristics of harmlessness, no toxicity, no pollution, no generation of derivatives, safety and environmental protection.
(5) The water treatment agent prepared by the invention not only has obvious removal effect on organic matters, nitrogen, phosphorus and heavy metals in sewage, but also has killing or growth inhibition effect on viruses, fungi and algae.
Detailed Description
Taking sewage at a water inlet of a certain sewage treatment plant, wherein the main indexes of the water quality before treatment are as follows: biological Oxygen Demand (BOD)5) 200mg/L, Chemical Oxygen Demand (COD)cr) 189mg/L, total nitrogen content (T-N) 27.4mg/L, and total phosphorus content (T-P) 2.1 mg/L. The water treatment agent is prepared by the following steps: mixing and crushing 25% of blast furnace slag powder, 40% of red mud and 33.5% of fly ash of the bulky solid waste complexing agent according to mass percentage, grinding the mixture to 200 meshes at the temperature of more than 70 ℃, adding 1.5% of sodium hydroxide for alkaline excitation, uniformly stirring the mixture, and maintaining the mixture for 20 hours under natural conditions to obtain bulky solid waste complexing agent powder A; secondly, mixing, crushing and stirring 25% of shaddock peel, 10% of corncob, 23% of bagasse, 25% of reed, 12% of typha and 5% of hyacinth orinnula in the plant and body according to mass percentage, soaking the mixture in deionized water for 12 days, and concentrating the soaking solution to obtain slurry A, wherein the concentration of the soaking solution is 35%; thirdly, according to the mass percentage, mixing, crushing and stirring 25 percent of eggshell, 30 percent of starch, 15 percent of zeolite, 15 percent of sepiolite and 15 percent of diatomite of the mineral bonding body at the temperature of 150 DEG C0Grinding to 380 meshes under the condition of C, and uniformly stirring to obtain powder B; fourthly, adding 40 percent of concentrated solution slurry A prepared by the method III and 60 percent of powder B prepared by the method III into a high-speed kneader according to the mass percentage, and heating the mixture to 170 DEG0C stirring for 30 minutes, and curing under natural conditions 1Obtaining slurry B after 8 hours; fifthly, stirring and mixing the powder A prepared by 40% of large solid waste complexing agent and the slurry B prepared by 60% by the method, adding 0.5% of composite foaming agent, stirring for 25 minutes, pouring into a spherical mold, demolding and drying to obtain the ecological environment-friendly composite water treatment agent for sewage treatment.
The water treatment agent is added into sewage according to 0.7 percent of the mass of the water to be treated, and then the sewage is treated through the processes of stirring, flocculation, adsorption, algae killing, precipitation separation and the like, wherein the treated water quality is as follows: biological Oxygen Demand (BOD)5) 48.3mg/L, Chemical Oxygen Demand (COD)cr) 65.2mg/L, 8.4mg/L total nitrogen content (T-N), 0.26mg/L total phosphorus content (T-P), 75.9%, 65.5%, 69.3%, 87.6% removing rate, naturally irradiating the treated purified water with 25% of light0No algae formation was observed after 20 days of storage under the condition of C or more.
In the foregoing specification, although a preferred embodiment of the invention has been described, it is understood that it is not intended to limit the scope of the invention to the particular embodiment, since various changes in the details of construction and details of operation, which will become apparent to those skilled in the art from this detailed description, may be made without departing from the spirit and scope of the invention.
Claims (3)
1. The invention discloses a technical method for preparing an ecological environment-friendly composite water treatment agent by using a large amount of solid waste complexing agent, which is characterized in that the ecological environment-friendly composite water treatment agent is prepared by using a large amount of solid waste complexing agent, plants and minerals and bonding bodies; the bulk solid waste compound is prepared by mixing, crushing, grinding and alkaline excitation of blast furnace slag powder, red mud and fly ash, or electrolytic stone slag, red mud and iron tailing powder, the plant attached body is prepared by mixing, crushing and soaking shaddock peel, corncob, bagasse, reed, cattail and hyacinth, and the mineral bonded body is prepared by mixing, crushing and grinding eggshell, starch, zeolite, sepiolite and diatomite; the preparation method comprises the following steps:
(1) when the method is used for treating sewage, the method comprises the following steps and technical methods: firstly, according to mass percentage ratio, the bulk solid wastes are mixedMixing and crushing 15-30% of blast furnace slag powder, 35-55% of red mud and 20-45% of fly ash of the complex, grinding to 150-250 meshes at a temperature of above 70 ℃, adding 1.0-8.0% of sodium hydroxide for alkaline excitation, uniformly stirring, and maintaining for 18-25 hours under natural conditions to obtain a large amount of solid waste complex powder A; secondly, mixing, smashing and stirring 15-25% of shaddock peel, 10-15% of corncob, 20-25% of bagasse, 20-30% of reed, 10-15% of cattail and 5-10% of hyacinth bean together with plants and bodies according to mass percentage, soaking the mixture in deionized water for 10-15 days, and concentrating the soaking solution to obtain slurry A, wherein the concentration of the soaking solution is 20-35%; thirdly, mixing, crushing and stirring 20-35% of eggshell, 25-35% of starch, 15-25% of zeolite, 10-15% of sepiolite and 10-15% of diatomite of the mineral bonding body according to mass percentage, and stirring at the temperature of 150 DEG C0~3500Grinding to 350-450 meshes under the condition of C, and uniformly stirring to obtain powder B; fourthly, adding 35 to 50 percent of concentrated solution slurry A prepared by the method III and 40 to 70 percent of powder B prepared by the method III into a high-speed kneader according to the mass percentage, and heating the mixture to 150 percent0~1900C, stirring for 25-30 minutes, and curing for 12-20 hours under natural conditions to obtain slurry B; fifthly, stirring and mixing the powder A prepared by 35-50% of the large solid waste complexing agent and the slurry B prepared by 45-70% by the method, adding 0.3-1.8% of the composite foaming agent, stirring for 25-30 minutes, pouring into a spherical mold, demolding and drying to obtain the ecological environment-friendly composite water treatment agent for sewage treatment;
(2) when the method is used for treating a water body of a river water source, the method comprises the following steps and technical methods: mixing and crushing 25-35% of electrolytic stone slag, 25-35% of red mud and 30-45% of iron tailing powder of a large solid waste complexing agent according to mass percentage, grinding the mixture to 120-200 meshes at a temperature of over 90 ℃, adding 2.0-5.0% of sodium silicate for alkali excitation, uniformly stirring the mixture, and curing the mixture for 15-20 hours under natural conditions to obtain a large solid waste complexing agent powder A; secondly, mixing, smashing and stirring 25-45% of shaddock peel, 10-15% of corncob, 10-15% of bagasse, 30-40% of reed and 5-10% of hyacinth bean according to mass percentage ratio, soaking the mixture in deionized water for 10-15 days, and concentrating the soaking solution to obtain slurry A with the concentration of 20-35%; thirdly, according to the mass percentage ratio, the components are mixedMixing, crushing and stirring 10-20% of eggshell, 15-20% of starch, 15-25% of zeolite, 20-30% of sepiolite and 20-30% of diatomite of the mineral bonding body at the temperature of 120 DEG C0~2500C, grinding to 350-450 meshes under the condition of C, and uniformly stirring to obtain powder B; fourthly, adding 35 to 50 percent of concentrated solution slurry A prepared by the method III and 40 to 70 percent of powder B prepared by the method III into a high-speed kneader according to the mass percentage, and heating the mixture to 150 percent0~1900C, stirring for 25-30 minutes, and curing for 12-20 hours under natural conditions to obtain slurry B; fifthly, stirring and mixing 45-70% of bulk solid waste complexing agent powder A prepared by the first step and 35-50% of slurry B prepared by the fourth step, adding 0.2-1.5% of composite foaming agent, stirring for 25-30 minutes, pouring into a spherical mold, demolding and drying to obtain the ecological environment-friendly composite water treatment agent for treating the water body of the river water source.
2. The technical method for preparing the ecological environment-friendly composite water treatment agent by the large solid waste complexing body according to claim 1, wherein when the ecological environment-friendly composite water treatment agent is used for sewage treatment, the adding amount of the water treatment agent is 0.5-2.5% of the mass of sewage, and the water treatment agent is fully stirred and mixed after being put into use.
3. The technical method for preparing the ecological environment-friendly composite water treatment agent by the large solid waste complexing body according to claim 1, wherein when the ecological environment-friendly composite water treatment agent is used for water source water body treatment, the adding amount of the water treatment agent is 0.3-1.5% of the mass of the water body, and the water treatment agent is fully stirred and mixed after being put into use.
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Application publication date: 20201023 |
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