WO2017152817A1 - 电镀废水处理工艺 - Google Patents

电镀废水处理工艺 Download PDF

Info

Publication number
WO2017152817A1
WO2017152817A1 PCT/CN2017/075734 CN2017075734W WO2017152817A1 WO 2017152817 A1 WO2017152817 A1 WO 2017152817A1 CN 2017075734 W CN2017075734 W CN 2017075734W WO 2017152817 A1 WO2017152817 A1 WO 2017152817A1
Authority
WO
WIPO (PCT)
Prior art keywords
straw
electroplating wastewater
filtrate
mixed
red mud
Prior art date
Application number
PCT/CN2017/075734
Other languages
English (en)
French (fr)
Inventor
周艳红
Original Assignee
香港神州企业管理有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 香港神州企业管理有限公司 filed Critical 香港神州企业管理有限公司
Priority to US15/523,924 priority Critical patent/US10287183B2/en
Priority to JP2017520971A priority patent/JP6473885B2/ja
Publication of WO2017152817A1 publication Critical patent/WO2017152817A1/zh

Links

Classifications

    • 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
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28016—Particle form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment 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
    • 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
    • C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32

Definitions

  • the invention relates to the technical field of sewage treatment, in particular to a treatment process of electroplating wastewater.
  • the development of China's economy is inseparable from industrial support, especially the processing industry.
  • the electroplating industry is an important force in China's processing industry.
  • the electroplating wastewater discharged by electroplating contains various heavy metal ions. If the heavy metal ions in the wastewater are discharged directly into the natural ring without treatment, it will cause immeasurable harm to the survival of humans and other organisms. Therefore, research on the treatment of electroplating wastewater is imperative.
  • Red mud is an industrial solid waste that is discharged from alumina after it is extracted from bauxite. Generally, it contains a large amount of iron oxide, and its appearance is similar to that of red soil, hence its name. Generally, an average of 1.0 to 2.0 tons of red mud is produced per ton of alumina produced. China's annual red mud discharge is up to several million tons. The current red mud treatment process is complex and costly. It can not only be fully and effectively processed, but also relies on large-scale yard stacking, occupying a large amount of land, and also The environment has caused serious pollution.
  • Straw is a general term for the stem and leaf parts of mature crops. More than half of the crop photosynthesis products are found in straw, so the straw is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter. It is a multi-purpose renewable biological resource, with the increase of agricultural output in China. With the accumulation of a large amount of straw, its reutilization rate is low, and most of the remaining is processed by incineration, which not only causes a waste of a large amount of effective resources, but also causes smog weather after the straw is burned, and produces a large amount of toxic and harmful substances. Threats with other biological health.
  • the present invention provides an electroplating wastewater treatment process, which uses pollutant red mud and rural waste straw instead of reducing the use of a large number of chemical agents, can effectively treat electroplating wastewater, and realizes the integration of red mud and straw. Use, waste treatment, low cost, high efficiency and environmental protection.
  • the technical scheme adopted by the invention is: an electroplating wastewater treatment process, using industrial waste red mud, agricultural waste straw and sea water to treat heavy metal ions in electroplating wastewater, the specific steps are as follows:
  • A. Mixing straw and electroplating wastewater crushing the straw, and mixing the pulverized straw with electroplating wastewater for 30-50 minutes; wherein the mass of straw input per liter of electroplating wastewater is 40-50 g; in this step, straw and electroplating
  • the wastewater is stirred and mixed, the electroplating wastewater is used to hydrolyze the straw, and the heavy metal ions of the electroplating wastewater are initially adsorbed to remove a part of the heavy metal ions in the electroplating wastewater.
  • the smashing of the straw and then mixing with the electroplating wastewater is beneficial to increase the surface area of the straw, thereby improving Adsorption effect;
  • step A Adsorption of metal ions:
  • the mixed solution in step A is mixed with the filtrate in step B, mixed by ultrasonic vibration for 30-50 min, allowed to stand for 3-5 h, and then mixed by ultrasonic shaking for 20-30 min, and allowed to stand for 1-2 hours.
  • the pH of the filtrate is adjusted to 8.5-9.5 after seawater treatment, and the second filtrate under alkaline conditions is mixed with the first filtrate and thoroughly mixed by ultrasonic vibration, so that the heavy metal ions in the step A are alkaline.
  • the filtrate obtained in the step C is adjusted to have a pH of 7.
  • step C the volume ratio of the first filtrate to the second filtrate is 1:0.8-1.2.
  • the particle size of the straw pulverization is 60-100 mesh.
  • the pulverized straw in the step A is mixed with the electroplating wastewater, the pulverized straw is heated at 250-350 ° C under air-insulated conditions, and the heating time is 1.5-3 h.
  • the straw is carbonized by adjusting the heating of the straw in the isolated air, and the surface of the straw after carbonization is rich in oxygen-containing functional groups.
  • the carbonized straw has a large negative charge on the surface at a higher pH, and has strong adsorption capacity for heavy metal cations.
  • the carbonized straw has better adsorption effect on heavy metal ions in the electroplating wastewater, and the purification effect is stronger, and the carbonized straw It can be recycled as fuel, green and environmentally friendly, without secondary pollution.
  • the electroplating wastewater is: chromium-containing wastewater, copper-containing wastewater, nickel-containing wastewater, cadmium-containing wastewater, zinc-containing wastewater, and silver-containing wastewater.
  • the raw materials are processed from a wide range of sources, all of which are wastes, which can be used for waste treatment and comprehensive utilization.
  • the treated straw and red mud waste can be recycled and reused without secondary pollution and environmental protection.
  • the electroplating wastewater was taken from an electroplating products co., Ltd. in Dongguan, in which the main heavy metal ion concentrations in the electroplating wastewater were determined as follows: Cr 6+ : 76 mg / L, Cu 2+ : 34 mg / L, Zn 2+ : 47 mg / L Ni 2+ : 30 mg / L, Ag + : 22 mg / L, Cd 2+ : 52 mg / L; wherein the pH of the electroplating wastewater is 2.5; red mud is taken from a new material Co., Ltd. of Hebei province, the pH value is 13.5.
  • the straw and electroplating wastewater mixture was mixed with the filtrate and mixed by ultrasonic vibration for 50 min, allowed to stand for 3 h, and then mixed by ultrasonic shaking for 30 min, allowed to stand for 2 hours, and then filtered; the pH of the filtrate was adjusted to 7.
  • Example 1 0.191 0.483 1.428 0.458 0.282 0.048
  • Example 2 0.180 0.460 1.401 0.431 0.268 0.046
  • Example 3 0.167 0.442 1.377 0.407 0.244 0.044
  • Example 4 0.159 0.424 1.354 0.387 0.226 0.038
  • Example 5 0.132 0.321 1.232 0.275 0.123 0.026
  • Example 6 0.121 0.357 1.112 0.242 0.101 0.025 National standard ⁇ 0.2 ⁇ 0.5 ⁇ 1.5 ⁇ 0.5 ⁇ 0.3 ⁇ 0.05

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • General Chemical & Material Sciences (AREA)
  • Soil Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Removal Of Specific Substances (AREA)
  • Physical Water Treatments (AREA)
  • Electroplating And Plating Baths Therefor (AREA)

Abstract

一种电镀废水处理工艺，采用工业废弃物赤泥、农业废弃物秸秆以及海水，处理电镀废水中的重金属离子，具体步骤如下：A.将秸秆粉碎，并将粉碎后的秸秆与电镀废水搅拌混合得到混合液，备用；其中每升电镀废水中投入秸秆的质量为40-50g；B.将海水与赤泥搅拌混合，调节pH为8.5-9.5，静置，过滤得到滤液，备用；其中每升海水中投入赤泥的质量为200-300g；C.将步骤A中的混合液与步骤B中的滤液混合，通过超声波振荡混合，静置，再通过超声波振荡混合，静置，过滤；D.将步骤C得到的滤液调节至pH为7即可。

Description

电镀废水处理工艺 技术领域
本发明涉及污水处理技术领域，尤指一种电镀废水处理工艺。
背景技术
中国经济的发展离不开工业的支持，尤其是加工行业。而电镀行业是我国加工行业一支重要的力量。随着电镀工业的发展，电镀废水的公害问题日益严重。电镀排放的电镀废水含有各种重金属离子，如果废水中的重金属离子不经过处理直接排放到自然环在必境中，会对人和其他的生物的生存造成不可估量的危害。因此，对电镀废水处理的研究势在必行。
治理重金属污染废水的方法有很多种，当前的电镀废水处理方法中，化学法处理法可靠，但其缺点是处理效率低、处理深度浅、且需要使用大量的化学药剂，处理成本极高。其它方法也不同程度的存在着投资大、耗能高、操作困难、易产生二次污染等问题。
赤泥是一种从铝土矿中提炼氧化铝后排出的工业固体废物。一般含氧化铁量大，外观与赤色泥土相似，因而得名。一般平均每生产1吨氧化铝，附带产生1.0～2.0吨赤泥。中国每年排放的赤泥高达数百万吨，当前赤泥的处理工艺较为复杂，且成本高，不仅不能充分有效的处理，而且还依靠大面积的堆场堆放，占用了大量土地，同时也对环境造成了严重的污染。
秸秆是成熟农作物茎叶部分的总称。农作物光合作用的产物有一半以上存在于秸秆中，因此秸秆富含氮、磷、钾、钙、镁和有机质等，是一种具有多用途的可再生的生物资源，随着我国农产量的提高，伴随着大量秸秆的堆积，其再利用率低，剩余的大部分都通过焚烧处理，不仅造成大量有效资源的浪费，且秸秆焚烧后会造成雾霾天气，并产生大量有毒有害物质，对人与其他生物健康形成威胁。
发明内容
为解决上述问题，本发明提供一种电镀废水处理工艺，利用污染物赤泥和农村废弃物秸秆代替了减少大量化学药剂的使用，能有效处理电镀废水的同时，实现了赤泥和秸秆的综合利用，以废治废，处理成本低、高效环保。
为实现上述目的，本发明采用的技术方案是：一种电镀废水处理工艺，采用工业废弃物赤泥、农业废弃物秸秆以及海水，处理电镀废水中的重金属离子，具体步骤如下：
A.混合秸秆与电镀废水：将秸秆粉碎，并将粉碎后的秸秆与电镀废水搅拌混合30-50min备用；其中每升电镀废水中投入秸秆的质量为40-50g；该步骤中，秸秆与电镀废水搅拌混合，电镀废水使秸秆发生水解，并对电镀废水的重金属离子进行初步吸附，除去电镀废水中的一部分重金属离子，其中将秸秆粉碎后再与电镀废水混合有利于提高秸秆的表面积，进而提高吸附效果；
B.混合海水与赤泥：将海水与赤泥搅拌混合20-30min，调节pH为8.5-9.5，静置2-3h后，过滤得到滤液，备用；其中每升海水中投入赤泥的质量为200-300g；经检验表明，赤泥的pH很高，其浸出液的pH值为12.1-13.5，其中影响其pH值高的原因是赤泥中含水合硅铝酸钠中含有Na20，而海水中还有大量的CaCl2、MgS04、NaCl可对以同赤泥中的Na20进行交换而达到除Na20的目，可将Na20的含量降至0.8％以下，从而降低赤泥的pH，使得处理过海水处理的赤泥达到工业生产水泥原料的要求；
C.吸附金属离子：将步骤A中的混合液与步骤B中的滤液混合，通过超声波振荡混合30-50min，静置3-5h，再通过超声波振荡混合20-30min，静置1-2小时后，过滤；该步骤中，滤液的pH经过海水处理后调节为8.5-9.5，碱性条件下的第二滤液与第一滤液混合通过超声波振荡充分混合，使得步骤A中的重金属离子在碱性条件下充分水解后形成沉淀，且步骤A中秸秆在碱性的条件下在其水解形成的羟基和羰基能够更加有效地对金属离子进行吸附，在上述两方面机制和协同的作用下能够有效地去除电镀废水中的重金属离子，具有很好的净化效果。
D.将步骤C中的得到的滤液调节至pH为7即可。
具体地,步骤C中，第一滤液与第二滤液的体积比为1：0.8-1.2。
具体地,步骤A中，秸秆粉碎的粒径为60-100目。
具体地,步骤A中粉碎后的秸秆与电镀废水混合前，将粉碎后的秸秆在隔绝空气的条件下加热250-350℃，加热时间为1.5-3h。该方案中，通过对秸秆在隔绝空气调节加热，使得秸秆炭化，炭化后的秸秆表面含丰富的含氧官能团， 使炭化秸秆在较高pH下表面带大量负电荷，对重金属阳离子有很强的吸附能力，炭化后的秸秆对电镀废水中的重金属离子吸附效果更佳，净化效果更强，且炭化后的秸秆可作为燃料回收再利用，绿色环保，无二次污染。
具体地,所述电镀废水为：含铬废水、含铜废水、含镍废水、含镉废水、含锌废水及含银废水。
本发明的有益效果在于：
1.综合利用农业废弃物秸秆、工业废弃物赤泥、海水对电镀废水进行处理，即可实现电镀废水中重金属的零排放，处理效果好；
2.无需建造任何构筑物，且处理过程中没有使用任何其他的化学药剂，处理成本极低，并能满足处理后的排放标准；
3.处理原料来源广泛，且均为废弃物，实现以废治废，综合利用，且处理后的秸秆、赤泥废弃物可回收再利用，无二次污染，节约环保。
具体实施方式
下面通过具体实施例对本发明作进一步的说明。
其中电镀废水取自在东莞市某电镀制品有限公司，其中测定出电镀废水中的主要重金属离子浓度如下：Cr6+：76mg/L、Cu2+：34mg/L、Zn2+：47mg/L、Ni2+：30mg/L、Ag+：22mg/L、Cd2+：52mg/L；其中电镀废水的pH为2.5；赤泥取自河北省某新材料有限公司，pH值为13.5。
实施例1
取10L电镀废水样备用，将秸秆破碎成粒径为60目的颗粒并称取400g，将秸秆颗粒投放入电镀废水中搅拌混合30min；取10L海水，并往海水加入2000g赤泥搅拌混合20min，调节pH值为8.5，静置2h后过滤，得到滤液；将秸秆与电镀废水混合液与滤液混合并通过超声波振荡混合30min，静置3h，再通过超声波振荡混合20min，静置1小时后，过滤；将滤液pH调节至7即可。
实施例2
取10L电镀废水样备用，将秸秆破碎成粒径为80目的颗粒并称取500g，将秸秆颗粒投放入电镀废水中搅拌混合40min；取10L海水，并往 海水加入3000g赤泥搅拌混合20min，调节pH值为9，静置2h后过滤，得到滤液；将秸秆与电镀废水混合液与滤液混合并通过超声波振荡混合30min，静置3h，再通过超声波振荡混合20min，静置1小时后，过滤；将滤液pH调节至7即可。
实施例3
取10L电镀废水样备用，将秸秆破碎成粒径为100目的颗粒并称取500g，将秸秆颗粒投放入电镀废水中搅拌混合40min；取10L海水，并往海水加入3000g赤泥搅拌混合25min，调节pH值为9，静置2.5h后过滤，得到滤液；将秸秆与电镀废水混合液与滤液混合并通过超声波振荡混合40min，静置3h，再通过超声波振荡混合25min，静置1.5小时后，过滤；将滤液pH调节至7即可。
实施例4
取10L电镀废水样备用，将秸秆破碎成粒径为100目的颗粒并称取500g，将秸秆颗粒投放入电镀废水中搅拌混合50min；取10L海水，并往海水加入3000g赤泥搅拌混合30min，调节pH值为9.5，静置3h后过滤，得到滤液；将秸秆与电镀废水混合液与滤液混合并通过超声波振荡混合50min，静置3h，再通过超声波振荡混合30min，静置2小时后，过滤；将滤液pH调节至7即可。
实施例5
取10L电镀废水样备用，将秸秆破碎成粒径为60目的颗粒并称取500g，将上述经过粉碎处理后的秸秆在隔绝空气的条件下加热250℃，加热时间为1.5h，形成炭化秸秆，将炭化秸秆颗粒投放入电镀废水中搅拌混合50min；取10L海水，并往海水加入3000g赤泥搅拌混合30min，调节pH值为9.5，静置3h后过滤，得到滤液；将炭化秸秆与电镀废水混合液与滤液混合并通过超声波振荡混合50min，静置3h，再通过超声波振荡混合30min，静置2小时后，过滤；将滤液pH调节至7即可。
实施例6
取10L电镀废水样备用，将秸秆破碎成粒径为100目的颗粒并称取500g，将上述经过粉碎处理后的秸秆在隔绝空气的条件下加热300℃，加热 时间为2h，形成炭化秸秆，将炭化秸秆颗粒投放入电镀废水中搅拌混合50min；取10L海水，并往海水加入3000g赤泥搅拌混合30min，调节pH值为9.5，静置3h后过滤，得到滤液；将秸秆与电镀废水混合液与滤液混合并通过超声波振荡混合50min，静置3h，再通过超声波振荡混合30min，静置2小时后，过滤；将滤液pH调节至7即可。
对实施例1-6中经处理后的电镀废水中的铬离子、铜离子、镍离子、镉离子、锌离子及银离子的浓度进行检定，测定结果与电镀污染物排放标准(GB21900-2008)进行比较，比较结果如表1所示。
表1
项目 Cr6+(mg/l) Cu2+(mg/l) Zn2+(mg/l) Ni2+(mg/l) Ag+(mg/l) Cd2+(mg/l)
废水样品 76 34 47 30 22 52
实施例1 0.191 0.483 1.428 0.458 0.282 0.048
实施例2 0.180 0.460 1.401 0.431 0.268 0.046
实施例3 0.167 0.442 1.377 0.407 0.244 0.044
实施例4 0.159 0.424 1.354 0.387 0.226 0.038
实施例5 0.132 0.321 1.232 0.275 0.123 0.026
实施例6 0.121 0.357 1.112 0.242 0.101 0.025
国家标准 ≤0.2 ≤0.5 ≤1.5 ≤0.5 ≤0.3 ≤0.05
通过表1可知，实施例1-6均符合电镀污染物排放标准(GB21900-2008)的要求，由此说明本发明处理效果好，且成本低，高效环保，适合在所有含电镀工艺的中小企业进行推广应用。
以上实施方式仅仅是对本发明的优选实施方式进行描述，并非对本发明的范围进行限定，在不脱离本发明设计精神的前提下，本领域普通工程技术人员对本发明的技术方案作出的各种变形和改进，均应落入本发明的权利要求书确定的保护范围内。

Claims (5)

  1. 一种电镀废水处理工艺，其特征在于，采用工业废弃物赤泥、农业废弃物秸秆以及海水，处理电镀废水中的重金属离子，具体步骤如下：
    A.混合秸秆与电镀废水：将秸秆粉碎，并将粉碎后的秸秆与电镀废水搅拌混合30-50min备用；其中每升电镀废水中投入秸秆的质量为40-50g；
    B.混合海水与赤泥：将海水与赤泥搅拌混合20-30min，调节pH为8.5-9.5，静置2-3h后，过滤得到滤液，备用；其中每升海水中投入赤泥的质量为200-300g；
    C.吸附金属离子：将步骤A中的混合液与步骤B中的滤液混合，通过超声波振荡混合30-50min，静置3-5h，再通过超声波振荡混合20-30min，静置1-2小时后，过滤；
    D.将步骤C中的得到的滤液调节至pH为7即可。
  2. 根据权利要求1所述的电镀废水处理工艺，其特征在于，步骤C中，第一滤液与第二滤液的体积比为1：0.8-1.2。
  3. 根据权利要求1所述的电镀废水处理工艺，其特征在于,步骤A中，秸秆粉碎的粒径为60-100目。
  4. 根据权利要求1所述的电镀废水处理工艺，其特征在于,步骤A中粉碎后的秸秆与电镀废水混合前，将粉碎后的秸秆在隔绝空气的条件下加热250-350℃，加热时间为1.5-3h。
  5. 根据权利要求1所述的电镀废水处理工艺，其特征在于,所述电镀废水为：含铬废水、含铜废水、含镍废水、含镉废水、含锌废水及含银废水。
PCT/CN2017/075734 2016-03-10 2017-03-06 电镀废水处理工艺 WO2017152817A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/523,924 US10287183B2 (en) 2016-03-10 2017-03-06 Electroplating wastewater treatment process using red mud, straw and seawater
JP2017520971A JP6473885B2 (ja) 2016-03-10 2017-03-06 めっき廃水処理工程

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610135746 2016-03-10
CN201610135746.2 2016-03-10

Publications (1)

Publication Number Publication Date
WO2017152817A1 true WO2017152817A1 (zh) 2017-09-14

Family

ID=59790027

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/075734 WO2017152817A1 (zh) 2016-03-10 2017-03-06 电镀废水处理工艺

Country Status (3)

Country Link
US (1) US10287183B2 (zh)
JP (1) JP6473885B2 (zh)
WO (1) WO2017152817A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108262023A (zh) * 2018-02-05 2018-07-10 上海第二工业大学 采用橘皮和磷化渣提纯的磷酸铁粉处理沼液废水的方法
CN110078306A (zh) * 2019-05-21 2019-08-02 武汉江扬环境科技股份有限公司 电镀废水零排放工艺
CN117125860A (zh) * 2023-10-09 2023-11-28 上海灿星环境科技有限公司 一种电镀含镍废水零排放设施及工艺

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109627071A (zh) * 2018-12-11 2019-04-16 吾道环保科技有限公司 一种电解锰渣的无害化处理用到的组合物
CN112010415A (zh) * 2019-05-30 2020-12-01 上海顺樊环保科技有限公司 一种镀镍废水处理用pH预调节装置
CN112607934B (zh) * 2020-12-21 2022-11-25 兰州资源环境职业技术学院 一种化学实验室废水处理系统
CN113023823A (zh) * 2021-04-20 2021-06-25 昆明理工大学 一种用于净化含砷重金属溶液的复合材料的制备方法
CN113697889A (zh) * 2021-08-25 2021-11-26 成都飞机工业（集团）有限责任公司 一种有机工业废水处理系统及处理方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100653950B1 (ko) * 2005-12-22 2006-12-05 한국화학연구원 미생물 담지용 다공성 담체를 이용한 수처리제
CN101204644A (zh) * 2006-12-20 2008-06-25 中国科学院生态环境研究中心 海水改性赤泥陶粒除砷吸附剂的制备及应用方法
CN101205088A (zh) * 2006-12-20 2008-06-25 中国科学院生态环境研究中心 海水冲洗赤泥除砷吸附剂的应用方法
CN102351271A (zh) * 2011-07-04 2012-02-15 中国科学院南京土壤研究所 秸秆生物质炭在处理电镀废水中的应用
CN103449623A (zh) * 2013-08-30 2013-12-18 武汉市硕隽科技有限公司 一种从工业废水中回收制备金属纳米材料的方法
CN106219796A (zh) * 2016-01-14 2016-12-14 东莞市美尊能源科技有限公司 电镀废水处理工艺

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2551822A1 (en) * 2003-12-24 2005-07-07 Mt Aspiring Geochemistry Consultants Pty Ltd Porous particulate material for fluid treatment, cementitious composition and method of manufacture thereof
US9649620B2 (en) * 2013-03-15 2017-05-16 American Peat Technology, Llc Particulate sorption medium prepared from partially decomposed organic matter
JP6355913B2 (ja) * 2013-11-19 2018-07-11 株式会社エコ・プロジェクト アルミニウム成分（Ａｌ成分）を含有する廃泥の処理物を含むイオン交換体、イオン交換体の製造方法、及び該イオン交換体を含有する有害元素イオン除去剤

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100653950B1 (ko) * 2005-12-22 2006-12-05 한국화학연구원 미생물 담지용 다공성 담체를 이용한 수처리제
CN101204644A (zh) * 2006-12-20 2008-06-25 中国科学院生态环境研究中心 海水改性赤泥陶粒除砷吸附剂的制备及应用方法
CN101205088A (zh) * 2006-12-20 2008-06-25 中国科学院生态环境研究中心 海水冲洗赤泥除砷吸附剂的应用方法
CN102351271A (zh) * 2011-07-04 2012-02-15 中国科学院南京土壤研究所 秸秆生物质炭在处理电镀废水中的应用
CN103449623A (zh) * 2013-08-30 2013-12-18 武汉市硕隽科技有限公司 一种从工业废水中回收制备金属纳米材料的方法
CN106219796A (zh) * 2016-01-14 2016-12-14 东莞市美尊能源科技有限公司 电镀废水处理工艺

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108262023A (zh) * 2018-02-05 2018-07-10 上海第二工业大学 采用橘皮和磷化渣提纯的磷酸铁粉处理沼液废水的方法
CN110078306A (zh) * 2019-05-21 2019-08-02 武汉江扬环境科技股份有限公司 电镀废水零排放工艺
CN117125860A (zh) * 2023-10-09 2023-11-28 上海灿星环境科技有限公司 一种电镀含镍废水零排放设施及工艺

Also Published As

Publication number Publication date
US10287183B2 (en) 2019-05-14
JP2018513771A (ja) 2018-05-31
US20180118583A1 (en) 2018-05-03
JP6473885B2 (ja) 2019-02-27

Similar Documents

Publication Publication Date Title
WO2017152817A1 (zh) 电镀废水处理工艺
WO2016058437A1 (zh) 一种污泥深度脱水的处理方法
CN102989427B (zh) 一种浒苔吸附剂及其制备工艺
CN108178341B (zh) 一种固体微生物净化颗粒及其制备方法
CN108993475B (zh) 一种三元复合材料非均相光Fenton催化剂及其制备和应用
CN107500497B (zh) 黑臭水体污泥的处理方法及其系统
CN106587197B (zh) 纳米生物循环水处理剂
CN104355497B (zh) 一种处理电镀废水的方法
CN108178246A (zh) 一种环保型微电解陶粒及其制备方法
CN108554379B (zh) 基于废弃钢渣的吸附剂及其制备方法和应用
CN106946329B (zh) 一种快速处理黑臭水体的絮凝剂及其制备方法
CN105110557B (zh) 一种絮凝气浮-产油微生物处理餐厨废水的方法
CN112957927B (zh) 一种以赤泥废渣为原料的多孔陶瓷油水分离膜及其制备方法
CN106115931A (zh) 海绵铁与微生物协同去除硫酸盐和Cd(Ⅱ)废水的方法
CN113477226A (zh) 一种利用壳聚糖改性生物炭去除水溶液中三价锑的方法
CN110127804B (zh) 一种污水处理材料
CN106219796A (zh) 电镀废水处理工艺
CN104445813B (zh) 一种去除污水中重金属离子和工业cod的制剂
CN106745358A (zh) 一种重金属污水处理剂及其制备方法
WO2020211353A1 (zh) 一种用于工业污水处理的粉剂
CN115287108A (zh) 一种用含油污泥生产的再生清洁燃料及其制造方法
CN111847618A (zh) 以农业废弃物为主要原料的重金属废水处理剂及其制备方法
CN113956884B (zh) 一种褐煤基重金属污染土壤修复剂的制备方法
CN108249735A (zh) 一种市政污泥处理方法
CN110127805B (zh) 一种污水的处理方法

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2017520971

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 15523924

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17762503

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17762503

Country of ref document: EP

Kind code of ref document: A1