CN105967245A - Crane electroplating wastewater treating agent based on modified coal gangue and preparing method thereof - Google Patents

Abstract

The invention discloses a crane electroplating wastewater treating agent based on modified coal gangue. Coal gangue is modified and added into a raw material to replace part of apatite, exploitation quantity of the natural apatite is reduced, and environment pollution problem caused by accumulation of the coal gangue is effectively solved; liquorice root and folium isatidis are organically modified, then are added into the raw material as adhesives and are in compatibility with effective chemical adsorbent, the treating agent is high in compatibility with organic pollutants and high in adsorption rate, a high-strength bonding body with ample holes is formed after the pelleting and high-temperature baking process, as a compound is formed by the added adhesives and other substances in the baking process, phase change of the natural powdered rock phosphate in different temperature intervals is restrained, internal stress is reduced, and the pulverization degree is reduced. The prepared treating agent is uniform in hole density, high in cohesiveness, not prone to dispersing in water and good in adsorbability.

Description

A kind of crane compound for treatment of electroplating wastes based on modified gangue and preparation method thereof

Technical field

The present invention relates to water treatment agent technical field, particularly relate to a kind of crane compound for treatment of electroplating wastes based on modified gangue and preparation method thereof.

Background technology

Along with the sustainable growth of China's economy, following one period China's construction machinery industry still in high-speed development period, particularly crawler crane industry promise well." industry restructuring guidance list (basis in 2011) " that National Development and Reform Committee promulgates explicitly points out, 400 tonnes and above crawler crane are chosen as " encouragement class " product as new industry, imply that crawler crane promise well, so causing increasing enterprise to join Crane Industry.Owing to crane mostly is outside work, therefore its facing operation is particularly paid attention to, including eliminating rust, electroplate, spraying paint, the most also produce a large amount of waste water, and containing substantial amounts of metal ion in waste water, such as Cu²⁺、Ni²⁺、Cr³⁺、Zn²⁺、Pb²⁺、Ag⁺、Cd²⁺Deng, toxicity is very big, and especially plating is one of with serious pollution industry, and if do not recycled the waste also resulting in resource, the healthy of people and quality of life in serious threat.

The most widely used chemical precipitation method that is still of electroplating waste water treatment technology the most both at home and abroad, but treatment effeciency is low, sediment weight big, easily cause secondary pollution etc..Though the macromolecular heavy metal chelating agent developed in recent years has good treatment effect, but expensive, it is difficult to accepted by Chinese market.The developmental research utilizing natural polymer heavy metal containing wastewater treatment agent is increasingly concerned, " preparation of amino modified starch heavy metal containing wastewater treatment agent and application " author utilizes amino modified starch to process the heavy metal ion in actual waste water, clearance is close to 100%, but, the method is to use These powdered adsorbents to process waste water, and aftertreatment technology is more complicated.As used granulating technique to make granular adsorbent, then process technique relatively simple, and it is few to consume power.

" preparation of a kind of heavy metal containing wastewater treatment agent and the characterization research of applied research-granular wastewater treatment agent " literary composition, with modified dicyanodiamide as raw material, uses the granulating technique rolling granulation to prepare the graininess waste water treating agent of function admirable.Result shows: the granular wastewater treatment agent of preparation removes Pb²⁺Ability can reach 112.28mg/g, and the structure of water treatment agent, compared with the structure of modified natural apatite, does not occurs great change, preferably maintains the properties of the natural apatite of modification.Simultaneously because the addition of additive, define the cohesive body of abundant hole and high intensity.Although literary composition is the heavy metal ion removing in waste water as adsorbing material with natural non-metallic mineral such as relatively inexpensive natural apatite, but consume too much natural non-metallic mineral and belong to non-renewable resources, do not meet the requirement of environment protecting and power-saving, the utilization rate of solid waste that excess is piled up by the most numerous processing enterprises is the highest, therefore can effectively use and in addition modified with the natural apatite of Substitute For Partial, add the binding agent of adaptation with the waste water treating agent that prepare function admirable, efflorescence degree is low, absorption property is strong simultaneously.The most not only solve a large amount of fixed-end forces difficult problem improperly but also provide strong effective solution for defects such as existing waste water treating agent cost high disposal weak effect intensity are low.

Summary of the invention

The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of crane compound for treatment of electroplating wastes based on modified gangue and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of crane compound for treatment of electroplating wastes based on modified gangue, is prepared by the raw materials in: apatite 41-42, gangue 21-24, Radix Glycyrrhizae 6-8, Folium Isatidis 12-14, Alumen 1-3, wood vinegar 12-14, potassium sulfate 3-4, gluten meal 10-12, Algin 4-6, methyl anyl alcohol 3-5,17 fluorine decyl triethoxysilane 2-4, suitable quantity of water.

The manufacture method of described a kind of based on modified gangue crane compound for treatment of electroplating wastes, comprises the following steps:

(1) Radix Glycyrrhizae, Folium Isatidis are dried and crush, adding mass fraction is that the soda ash solution of 10-20% soaks 24 hours at 70-90 DEG C, uses deionized water rinsed clean, drains drying, add 17 fluorine decyl triethoxysilanes, Alumen ultrasonic grinding 20-30 minute, dry；

(2) gangue sprays concentrated sulfuric acid solution sulfonation in a nitrogen environment that mass concentration is 98% process 15-20 minute, filtration with hot wash to without SO4^{2 –}, add Algin, methyl anyl alcohol magnetic agitation 2-3 hour, dry；

(3) apatite is sprayed vaporific wood vinegar, calcine 2-3 hour in the oxygen atmosphere of 200-300 DEG C, it is cooled to room temperature pulverize, apatite powder must be activated, add step (2) material and be ground, add step (1) material and the mixing of other residual componentss, spray into 10% moisture, pelletize, drying, finally in 700-750 DEG C of roasting 15-20 minute, discharging.

The invention have the advantage that the yield adding Substitute For Partial apatite in raw material after coal gangue modified to and not only reducing natural apatite is the most effectively solved the environmental pollution that Piling of Gangue causes by the present invention；The present invention is also by Radix Glycyrrhizae simultaneously, add in raw material as bonding agent and the effective chemosorbent of compatibility after Folium Isatidis is organically-modified, adsorption rate good with the organic pollution compatibility is high, through pelletize after, after high-temperature roasting PROCESS FOR TREATMENT, define the cohesive body of abundant hole and high intensity, and the binding agent owing to adding forms compound with other material in roasting process, inhibit the phase transformation that natural ground phosphate rock occurs in different temperatures interval, reduce internal stress to produce, reduce efflorescence degree, utilize the inorganic agent hole even density that the present invention prepares, caking property water fortunately is difficult to dispersion, adsorptivity is good.

Detailed description of the invention

A kind of crane compound for treatment of electroplating wastes based on modified gangue, is prepared by the raw materials in: apatite 41, gangue 21, Radix Glycyrrhizae 6, Folium Isatidis 12, Alumen 1, wood vinegar 12, potassium sulfate 3, gluten meal 10, Algin 4, methyl anyl alcohol 3,17 fluorine decyl triethoxysilane 2, suitable quantity of water.

The manufacture method of described a kind of based on modified gangue crane compound for treatment of electroplating wastes, comprises the following steps:

(1) Radix Glycyrrhizae, Folium Isatidis are dried and crush, adding mass fraction is that the soda ash solution of 10-20% soaks 24 hours at 70-90 DEG C, uses deionized water rinsed clean, drains drying, add 17 fluorine decyl triethoxysilanes, Alumen ultrasonic grinding 20-30 minute, dry；

(2) gangue sprays concentrated sulfuric acid solution sulfonation in a nitrogen environment that mass concentration is 98% process 15-20 minute, filtration with hot wash to without SO4^{2 –}, add Algin, methyl anyl alcohol magnetic agitation 2-3 hour, dry；

(3) apatite is sprayed vaporific wood vinegar, calcine 2-3 hour in the oxygen atmosphere of 200-300 DEG C, it is cooled to room temperature pulverize, apatite powder must be activated, add step (2) material and be ground, add step (1) material and the mixing of other residual componentss, spray into 10% moisture, pelletize, drying, finally in 700-750 DEG C of roasting 15-20 minute, discharging.

The eliminating rate of absorption utilizing the crane compound for treatment of electroplating wastes heavy metal ion that the present invention prepares can reach 93.42%；BOD clearance is 98.46%；COD clearance is 97.41%.

Claims (2)

1. a crane compound for treatment of electroplating wastes based on modified gangue, it is characterized in that, be prepared by the raw materials in: apatite 41-42, gangue 21-24, Radix Glycyrrhizae 6-8, Folium Isatidis 12-14, Alumen 1-3, wood vinegar 12-14, potassium sulfate 3-4, gluten meal 10-12, Algin 4-6, methyl anyl alcohol 3-5,17 fluorine decyl triethoxysilane 2-4, suitable quantity of water.

The manufacture method of a kind of crane compound for treatment of electroplating wastes based on modified gangue the most according to claim 1, it is characterised in that comprise the following steps:

(1) Radix Glycyrrhizae, Folium Isatidis are dried and crush, adding mass fraction is that the soda ash solution of 10-20% soaks 24 hours at 70-90 DEG C, uses deionized water rinsed clean, drains drying, add 17 fluorine decyl triethoxysilanes, Alumen ultrasonic grinding 20-30 minute, dry；

(2) gangue sprays concentrated sulfuric acid solution sulfonation in a nitrogen environment that mass concentration is 98% process 15-20 minute, filtration with hot wash to without SO4^{2 –}, add Algin, methyl anyl alcohol magnetic agitation 2-3 hour, dry；

(3) apatite is sprayed vaporific wood vinegar, calcine 2-3 hour in the oxygen atmosphere of 200-300 DEG C, it is cooled to room temperature pulverize, apatite powder must be activated, add step (2) material and be ground, add step (1) material and the mixing of other residual componentss, spray into 10% moisture, pelletize, drying, finally in 700-750 DEG C of roasting 15-20 minute, discharging.