CN110156237A - 一种废水水利回收方法 - Google Patents
一种废水水利回收方法 Download PDFInfo
- Publication number
- CN110156237A CN110156237A CN201910586602.2A CN201910586602A CN110156237A CN 110156237 A CN110156237 A CN 110156237A CN 201910586602 A CN201910586602 A CN 201910586602A CN 110156237 A CN110156237 A CN 110156237A
- Authority
- CN
- China
- Prior art keywords
- added
- coking plant
- mother liquor
- plant wastewater
- water conservancy
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000011084 recovery Methods 0.000 title claims abstract description 19
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 title description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000012452 mother liquor Substances 0.000 claims abstract description 36
- 238000004939 coking Methods 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 24
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000012028 Fenton's reagent Substances 0.000 claims abstract description 12
- 239000000701 coagulant Substances 0.000 claims abstract description 10
- 238000004821 distillation Methods 0.000 claims abstract description 9
- 238000005189 flocculation Methods 0.000 claims abstract description 9
- 230000016615 flocculation Effects 0.000 claims abstract description 9
- 230000001376 precipitating effect Effects 0.000 claims abstract description 9
- 239000006228 supernatant Substances 0.000 claims abstract description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 5
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 5
- 239000001110 calcium chloride Substances 0.000 claims abstract description 5
- 238000001704 evaporation Methods 0.000 claims description 18
- 230000008020 evaporation Effects 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 8
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 8
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 7
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 8
- 150000003839 salts Chemical class 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 2
- 239000000498 cooling water Substances 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 abstract description 2
- 230000001112 coagulating effect Effects 0.000 abstract 1
- 239000010908 plant waste Substances 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- -1 Hydroxyl radical free radical Chemical class 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 6
- 238000006385 ozonation reaction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Chemical group 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- C02F1/66—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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/07—Alkalinity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/19—SO4-S
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/20—Total organic carbon [TOC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
本发明公开了一种焦化厂废水水利回收方法,属于焦化厂废水处理技术领域。其包括:加入混凝剂和助凝剂进行混凝沉淀40~50min后,向清液中分批次加入过氧化氢,并通入臭氧,反应50~70min,调节清液的pH至3‑4后,加入芬顿试剂并在20w‑40w紫外光照射下反应50~70min,调节pH至5‑6后,加入氯化钙进行搅拌沉淀,并取上层清液进行蒸馏处理。本发明的焦化厂废水水利回收方法操作简单、处理周期短、能耗低,不会产生二次污染,实现对焦化厂废水蒸发母液无害化处理,蒸馏得到的冷凝液水质满足国家标准,可作为敞开式循环冷却水***补充水再利用,蒸馏后得到的盐可作为工业盐回收利用。
Description
技术领域
本发明涉及油焦化厂废水处理技术领域,具体涉及一种焦化厂废水水利回收方法。
背景技术
目前焦化厂的污水处理一般经过生化处理,进入微滤、超滤、反渗透单元,清水用于循环水使用,出来的浓水,一般进入高效的蒸发结晶工艺,结晶工艺采用一效蒸发技术、或多效蒸发技术(MED)、或机械蒸汽再压缩技术(MVR),投资大、能耗高,为此,在焦化厂内部工艺上进行合并、优化,形成焦化浓水处理新工艺。
伴随着淡水资源的稀缺及越发严格的环保法规的颁布,目前焦化废水处理技术普遍以生化处理技术或其改进技术为主,虽说从技术层面角度讲,处理后可以使废水达到污水综合排放一级标准,但由于生物处理受负荷、毒物、营养等条件因素影响较大,加之操作人员运行水平的限制,实际运行过程中,往往出现处理后的废水污染物超标现象,比如在废水进水量超过设计量或冲击负荷大的情况下容易超标。因此单纯的常规处理不能保证全部的废水达标,必须经过更进一步的处理后才能实现全部达标。为此有必要实施焦化废水的深度处理工程,以保证处理后的废水全部达标,以便实现焦化废水的回用。
废水脱盐技术有离子交换法、电渗析、反渗透膜法、电吸附等。利用离子交换法脱盐时需要大量的酸碱试剂,不仅增加了成本而且对环境造成严重的污染;电渗析脱盐技术在运行时会产生较多的气体,工艺易发生电解;反渗透脱盐工艺设备昂贵,运行费用较高,而且对进水水质和进水压力有严格的控制。综上,目前焦化废水的深度脱盐工艺集中在膜处理方面。对焦化废水采用膜法脱盐工艺虽然工艺较为成熟,但是存在如下的问题:(1)处理成本较高,不论是三膜法或是双膜法,脱盐部分成本都在15元/吨以上;(2)膜法产水率约60%-70%,产生约30%-40%的浓水,该部分浓水外排会造成环境污染,若采用蒸发浓缩对浓水进行处理,也存在能耗高、设备腐蚀、固体混盐残渣无法利用等一系列问题。因此,需要进一步开发适用于焦化废水的深度脱盐处理工艺。
多效蒸发技术主要是通过多个蒸发器对废水进行蒸发,得到可以回收利用的蒸发冷凝液,但同时也会生成浓水-蒸发母液。蒸发母液通常含有一些烃类、稠环含氮、含硫有机化合物以及大量难以自然沉降的悬浮颗粒物,属于有害杂质多,高含盐、高COD的难降解有机废水。蒸发母液水质不稳定,水质波动大,且现有焦化厂产废水蒸发母液处理技术具有处理成本高,出水水质差等问题。
发明内容
本发明的目的是提供一种焦化厂废水水利回收方法,以解决现有焦化厂废水蒸发母液处理技术处理成本高,出水水质差的问题。
本发明解决上述技术问题的技术方案如下:
一种焦化厂废水水利回收方法,其包括:
(1)向焦化厂废水蒸发母液中加入混凝剂和助凝剂进行搅拌混凝,沉淀40~50min后取上层清液;
(2)向清液中分批次加入过氧化氢,并通入臭氧,反应50~70min;
(3)调节步骤(2)处理后清液的pH至3-4后,分批次加入芬顿试剂,并在20w-40w紫外光照射下反应50~70min;
(4)调节步骤(3)处理后清液的pH至5-6后,加入氯化钙进行搅拌,沉淀40~50min后取上层清液;
(5)将步骤(4)中的上层清液在130℃-145℃下进行蒸馏处理40~60min;
其中,芬顿试剂为过氧化氢和七水合硫酸亚铁,每吨母液中加入过氧化氢5L-10L以及七水合硫酸亚铁5kg-8kg。
其中,步骤(1)中混凝剂为聚合氯化铝,且每吨母液中加入聚合氯化铝1kg-3kg;助凝剂为聚丙烯酰胺,且每吨母液中加入聚丙烯酰胺0.1kg-0.2kg。
优选地,步骤(2)中每吨母液中加入过氧化氢15L-25L。
优选地,步骤(2)中过氧化氢的质量分数为30%-35%。
优选地,步骤(2)中通入的臭氧流量为0.5L/min-1.2L/min,且所述臭氧是由臭氧发生器以纯度为60%-70%氧气为氧源产生。
优选地,步骤(3)中芬顿试剂中采用的过氧化氢的质量分数为25%-35%。
优选地,步骤(1)中的焦化厂废水蒸发母液中,其COD为8000mg/L-14000mg/L;TOC为1000mg/L-2000mg/L;总碱度为15000mg/L-22000mg/L;pH为10-13;硫酸盐为30000mg/L-100000mg/L;氯离子为140000mg/L-170000mg/L。
优选地,所述处理方法得到的处理水,其COD为小于10mg/L;TOC为小于4mg/L;总碱度为小于70mg/L;pH为7-8;硫酸盐为小于70mg/L;氯离子为小于18mg/L。
本发明具有以下有益效果:
1、本发明通过在焦化厂废水蒸发母液中直接加入混凝剂和助凝剂,可以避免母液中悬浮颗粒太多堵塞管道,同时也提高处理效率。此操作可以除去95%以上的悬浮物,为后续的臭氧催化氧化以及紫外/芬顿处理创造良好的条件。
2、本发明通过在过氧化氢催化作用下发生臭氧催化氧化反应,其反应的pH范围与母液的pH范围一致,可以在不经过酸碱池调节直接进行臭氧催化氧化反应,省略了调节pH操作,缩短了处理时间,节约了处理成本。
3、本发明的臭氧催化氧化反应中,臭氧在过氧化氢催化作用下产生具有强氧化性的羟基自由基,以此达到降低废水中有机物、提高可生化性的目的。
4、本发明的臭氧催化氧化反应可以去除母液中80%以上有机物。
5、本发明的紫外光/芬顿处理中,芬顿试剂与紫外光协同产生强氧化性的羟基自由基,通过羟基自由基与母液中有机物发生反应,将其最终氧化为 水、二氧化碳、无机盐等无机物既加快反应速率,同时也减少了后续回收处理催化剂的步骤,既缩短了处理时间也节约了处理成本。 本发明的紫外光/芬顿处理协同臭氧催化氧化反应可以去除母液中95%以上有机物。
6、本发明的紫外光/芬顿处理中,有利于激活产生更多数量的羟基自由基,同时也增大了有机物分子平均动能,从而加快羟基自由基与 母液中有机物的反应速度,提高了紫外光/芬顿处理的效率。
7、本发明的焦化厂废水水利回收方法,其操作加简单、处理周期短,能耗低,不会产生二次污染,实现对焦化厂废水蒸发母液无害化处理,蒸馏得到的冷凝液水质满足国家标准,可作为敞开式循环冷却水***补充水再利用,蒸馏 后得到的盐可作为工业盐回收利用。
具体实施方式
以下结合实施例对本发明的原理和特征进行描述,所举实例只用于解释 本发明,并非用于限定本发明的范围。实施例中未注明具体条件者,按照常 规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为 可以通过市售购买获得的常规产品。
实施例1:
本实施例的焦化厂废水水利回收方法包括:、
(1)向焦化厂废水蒸发母液中加入混凝剂和助凝剂进行搅拌混凝,沉淀 40min后取上层清液;其中,混凝剂为聚合氯化铝,且每吨母液中加入聚合氯化 铝1kg;助凝剂为聚丙烯酰胺,且每吨母液中加入聚丙烯酰胺0.1kg。
(2)向清液中分2批次加入过氧化氢,并通入臭氧,反应50min;每吨母液中加入质量分数为30%的过氧化氢15L;且通入的臭氧流量为 0.5L/min,臭氧是由臭氧发生器以纯度为60%氧气为氧源产生。
(3)调节步骤(2)处理后清液的pH至3后,分2批次加入芬顿试剂, 并在20w紫外光照射下反应50min;其中,芬顿试剂包括过氧化氢和七水合硫酸亚铁,每吨母液中加入质量分数为25%的过氧化氢5L以及七水合硫酸亚铁7kg。
(4)调节步骤(3)处理后清液的pH至5后,加入氯化钙进行搅拌, 沉淀40min后取上层清液;
(5)将步骤(4)中的上层清液在130℃下进行蒸馏处理40min。
本实施例中焦化厂废水蒸发母液中,其COD为8000mg/L;TOC为1000mg/L;总碱度为15000mg/L;pH为10;硫酸盐为30000mg/L;氯离子为140000mg/L。
经本实施例的焦化厂废水水利回收方法处理的处理水中,其COD 为7mg/L;TOC为3mg/L;总碱度为65mg/L;pH为7;硫酸盐为60mg/L;氯离子为10mg/L。步骤(5)蒸馏得到的冷凝液水质满 足《城市污水再生利用工业用水水质》(GB/T 19923-2005)国家标准。
实施例2:
本实施例的焦化厂废水水利回收方法包括:、
(1)向焦化厂废水蒸发母液中加入混凝剂和助凝剂进行搅拌混凝,沉淀 50min后取上层清液;其中,混凝剂为聚合氯化铝,且每吨母液中加入聚合氯化 铝3kg;助凝剂为聚丙烯酰胺,且每吨母液中加入聚丙烯酰胺0.2kg。
(2)向清液中分2批次加入过氧化氢,并通入臭氧,反应60min;每吨母液中加入质量分数为30%的过氧化氢20L;且通入的臭氧流量为 0.8L/min,臭氧是由臭氧发生器以纯度为66%氧气为氧源产生。
(3)调节步骤(2)处理后清液的pH至3后,分2批次加入芬顿试剂, 并在20w紫外光照射下反应60min;其中,芬顿试剂包括过氧化氢和七水合硫酸亚铁,每吨母液中加入质量分数为25%的过氧化氢5L以及七水合硫酸亚铁7kg。
(4)调节步骤(3)处理后清液的pH至5后,加入氯化钙进行搅拌, 沉淀40min后取上层清液;
(5)将步骤(4)中的上层清液在140℃下进行蒸馏处理60min。
本实施例中焦化厂废水蒸发母液中,其COD为14000mg/L;TOC为2000mg/L;总碱度为22000mg/L;pH为13;硫酸盐为100000mg/L;氯离子为170000mg/L。
经本实施例的焦化厂废水水利回收方法处理的处理水中,其COD 为9mg/L;TOC为3mg/L;总碱度为65mg/L;pH为7.5;硫酸盐为65mg/L;氯离子为15mg/L。步骤(5)蒸馏得到的冷凝液水质满 足《城市污水再生利用工业用水水质》(GB/T 19923-2005)国家标准。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明 的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发 明的保护范围之内。
Claims (7)
1.一种焦化厂废水水利回收方法,其特征在于:
(1)向焦化厂废水蒸发母液中加入混凝剂和助凝剂进行搅拌混凝,沉淀40~50min后取上层清液;
(2)向清液中分批次加入过氧化氢,并通入臭氧,反应50~70min;
(3)调节步骤(2)处理后清液的pH至3-4后,分批次加入芬顿试剂,并在20w-40w紫外光照射下反应50~70min;
(4)调节步骤(3)处理后清液的pH至5-6后,加入氯化钙进行搅拌,沉淀40~50min后取上层清液;
(5)将步骤(4)中的上层清液在130℃-145℃下进行蒸馏处理40~60min;
其中,芬顿试剂为过氧化氢和七水合硫酸亚铁,每吨母液中加入过氧化氢5L-10L以及七水合硫酸亚铁5kg-8kg,其中,步骤(1)中混凝剂为聚合氯化铝,且每吨母液中加入聚合氯化铝1kg-3kg;助凝剂为聚丙烯酰胺,且每吨母液中加入聚丙烯酰胺0.1kg-0.2kg。
2.根据权利要求1所述的焦化厂废水水利回收方法,其特征在于,步骤(2)中每吨母液中加入过氧化氢15L-25L。
3.根据权利要求3所述的焦化厂废水水利回收方法,其特征在于,步骤(2)中过氧化氢的质量分数为30%-35%。
4.根据权利要求1所述的焦化厂废水水利回收方法,其特征在于,步骤(2)中通入的臭氧流量为0.5L/min-1.2L/min,且所述臭氧是由臭氧发生器以纯度为60%-70%氧气为氧源产生。
5.根据权利要求1所述的焦化厂废水水利回收方法,其特征在于,步骤(3)中芬顿试剂中采用的过氧化氢的质量分数为25%-35%。
6.根据权利要求1所述的焦化厂废水水利回收方法,其特征在于,步骤(1)中的焦化厂废水蒸发母液中,其COD为8000mg/L-14000mg/L;TOC为1000mg/L-2000mg/L;总碱度为15000mg/L-22000mg/L;pH为10-13;硫酸盐为30000mg/L-100000mg/L;氯离子为140000mg/L-170000mg/L。
7.根据权利要求1-6任一项所述的焦化厂废水水利回收方法,其特征在于,所述处理方法得到的处理水,其COD为小于10mg/L;TOC为小于4mg/L;总碱度为小于70mg/L;pH为7-8;硫酸盐为小于70mg/L;氯离子为小于18mg/L。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910586602.2A CN110156237A (zh) | 2019-07-01 | 2019-07-01 | 一种废水水利回收方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910586602.2A CN110156237A (zh) | 2019-07-01 | 2019-07-01 | 一种废水水利回收方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110156237A true CN110156237A (zh) | 2019-08-23 |
Family
ID=67637282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910586602.2A Pending CN110156237A (zh) | 2019-07-01 | 2019-07-01 | 一种废水水利回收方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110156237A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110697933A (zh) * | 2019-10-11 | 2020-01-17 | 江南大学 | 一种控制卤代消毒副产物含量的方法 |
CN111573970A (zh) * | 2020-05-06 | 2020-08-25 | 中南大学 | 一种物化生化联合处理焦化废水的方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106045144A (zh) * | 2016-07-21 | 2016-10-26 | 博天环境工程(北京)有限公司 | 一种反渗透浓水的蒸发前处理方法 |
EP3486650A1 (en) * | 2017-11-15 | 2019-05-22 | KWR Water B.V. | Method for determining the effectiveness of removal of viruses in a purification process. |
CN109928563A (zh) * | 2019-04-22 | 2019-06-25 | 重庆市涪陵页岩气环保研发与技术服务中心 | 一种页岩气钻井废水处理方法 |
-
2019
- 2019-07-01 CN CN201910586602.2A patent/CN110156237A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106045144A (zh) * | 2016-07-21 | 2016-10-26 | 博天环境工程(北京)有限公司 | 一种反渗透浓水的蒸发前处理方法 |
EP3486650A1 (en) * | 2017-11-15 | 2019-05-22 | KWR Water B.V. | Method for determining the effectiveness of removal of viruses in a purification process. |
CN109928563A (zh) * | 2019-04-22 | 2019-06-25 | 重庆市涪陵页岩气环保研发与技术服务中心 | 一种页岩气钻井废水处理方法 |
Non-Patent Citations (1)
Title |
---|
张光明、张盼月、张信芳编著: "《水处理高级氧化技术》", 31 October 2007, 哈尔滨:哈尔滨工业大学出版社 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110697933A (zh) * | 2019-10-11 | 2020-01-17 | 江南大学 | 一种控制卤代消毒副产物含量的方法 |
CN111573970A (zh) * | 2020-05-06 | 2020-08-25 | 中南大学 | 一种物化生化联合处理焦化废水的方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105502782B (zh) | 一种煤化工焦化废水水资源和盐回收工艺 | |
JP3883445B2 (ja) | 汚水処理装置 | |
CN112374705B (zh) | 钢铁企业高盐废水处理工艺 | |
CN111039477A (zh) | 一种焦化废水反渗透浓水资源化综合利用的方法 | |
CN111377575B (zh) | 一种高硫酸盐高cod有机废水的处理方法 | |
CN108275817A (zh) | 一种高硬度高盐分废水资源化的处理方法 | |
CN103771650A (zh) | 一种煤气化废水的处理方法 | |
CN103288236A (zh) | 含盐废水的处理方法 | |
CN110683709A (zh) | 一种含氟废水零排放的处理方法 | |
CN105481179A (zh) | 一种浓盐污水零排放处理方法 | |
CN107215998A (zh) | 一种废水的深度处理方法 | |
CN111777220A (zh) | 一种新型高含盐量、高永硬度废水软化处理方法 | |
CN110156237A (zh) | 一种废水水利回收方法 | |
CN109824194A (zh) | 一种高盐高cod有机废水的处理方法 | |
CN107226572B (zh) | 含汞废水深度处理零排***和方法 | |
CN113415924A (zh) | Fenton试剂氧化强化吸附的反渗透浓水处理工艺 | |
CN110342740B (zh) | 含盐有机废水的净化方法和净化*** | |
WO2024060693A1 (zh) | 一种煤化工废水处理方法及*** | |
CN110937735A (zh) | 一种燃煤电厂脱硫废水资源化处理***及方法 | |
CN111018205A (zh) | 垃圾渗滤液ro浓缩液的预处理方法 | |
CN112919709A (zh) | 一种高盐高浓度有机废水处理的工艺 | |
CN110183021A (zh) | 一种气田废水蒸发母液的处理方法 | |
CN115974328A (zh) | 一种钢铁行业生产废水零排放处理***以及处理工艺 | |
CN114516689A (zh) | 电石法聚氯乙烯含汞废水处理与回用方法及其应用装置 | |
CN110759548B (zh) | 一种用于垃圾渗滤液膜分离***的联合净化处理方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190823 |
|
WD01 | Invention patent application deemed withdrawn after publication |