CN108862768A - 一种矿井水资源化处理方法 - Google Patents
一种矿井水资源化处理方法 Download PDFInfo
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- CN108862768A CN108862768A CN201810723437.6A CN201810723437A CN108862768A CN 108862768 A CN108862768 A CN 108862768A CN 201810723437 A CN201810723437 A CN 201810723437A CN 108862768 A CN108862768 A CN 108862768A
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- water
- salt
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 147
- 238000003672 processing method Methods 0.000 title claims description 15
- 239000012528 membrane Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 38
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 33
- 239000002351 wastewater Substances 0.000 claims abstract description 32
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 23
- 239000011780 sodium chloride Substances 0.000 claims description 90
- 150000003839 salts Chemical class 0.000 claims description 83
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 35
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound 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[Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 34
- 239000012141 concentrate Substances 0.000 claims description 22
- CBENFWSGALASAD-UHFFFAOYSA-N ozone Chemical compound 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[O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 19
- 238000007254 oxidation reaction Methods 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound 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[Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
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- 238000009303 advanced oxidation process reaction Methods 0.000 abstract description 6
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials 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O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052681 coesite Inorganic materials 0.000 abstract description 4
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 4
- 239000005416 organic matter Substances 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 229910052904 quartz Inorganic materials 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 4
- 239000002910 solid waste Substances 0.000 abstract description 4
- 229910052682 stishovite Inorganic materials 0.000 abstract description 4
- 229910052905 tridymite Inorganic materials 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 239000006227 byproduct Substances 0.000 abstract description 3
- 230000003111 delayed Effects 0.000 abstract description 3
- 230000000249 desinfective Effects 0.000 abstract description 3
- 230000002779 inactivation Effects 0.000 abstract description 3
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances 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[Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 13
- 235000019589 hardness Nutrition 0.000 description 13
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- 241000276438 Gadus morhua Species 0.000 description 7
- 235000019516 cod Nutrition 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 238000011068 load Methods 0.000 description 6
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- 238000005516 engineering process Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 239000003621 irrigation water Substances 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
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- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound 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[Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 125000003158 alcohol group Chemical group 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
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- 230000003204 osmotic Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound 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- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound 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[O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L Iron(II) chloride Chemical compound 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Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000000903 blocking Effects 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound 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[Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water, or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultra-violet light
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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
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- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
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- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
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- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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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
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- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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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
- C02F2209/00—Controlling or monitoring parameters in water 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Abstract
本发明公开了一种矿井水资源化处理方法,涉及废水处理领域,目的在于解决采用反渗透法单独对高矿化度矿井水进行处理时,存在能耗高、易堵塞的问题。本发明科学调控离子平衡,使工艺性能更加稳定,有效延缓了反渗透膜污染;通过对SiO2的去除,从根本上解决了膜流道结垢堵塞问题;在高级氧化工艺段在去除有机物、破除胶体的同时实现了消毒灭活过程,并避免了氯离子的引入。本发明中,废水回用率99%以上,能实现废水零排放,提高固废和副产物资源化利用价值,Na2SO4纯度达到99%以上,易于综合利用。进一步,本发明灵活性强,能实现废水梯度净化、分质利用,最大程度地降低废水资源化利用成本,具有较高的应用价值。
Description
一种矿井水资源化处理方法
技术领域
[0001] 本发明涉及水处理领域,具体为一种矿井水资源化处理方法。更具体地,其提供一 种用于高矿化度矿井水资源化处理的方法,及用于该方法的装置,其能适用于高硫酸盐、高 永久性硬度水的矿井水,实现梯度净化、分质利用,最大程度地降低废水资源化利用成本。
背景技术
[0002] 煤矿矿井水依据其中有害物质不同,可以分为含悬浮物矿井水、酸性矿井水、含特 殊有害元素矿井水及高矿化度矿井水。其中,高矿化度矿井水是指含有大量的无机盐的矿 井水。而我国煤矿中约有40 %的矿井水中含有大于1000mg/L的溶解性盐类,部分矿井能达 到2000mg/L以上,当其作为居民生活用水、井下消防用水、锅炉补给水、农业灌溉用水时,远 远超过了国家所规定的标准,因此,该类废水的关键环节在于盐的去除。
[0003] 目前,在对高矿化度矿井水进行处理时,通常先对废水进行混凝、沉淀和过滤的预 处理,再进行深度处理。常用的深度处理方法包括电渗析法、离子交换法、蒸馏法、反渗透 法。
[0004] 其中,电渗析法是指,在外加直流电场力的作用下,利用离子交换膜对溶液中离子 的选择透过性,使溶质和溶剂分离的一种物理化学过程。电渗透法对钙、镁、氯化物等溶解 性无机盐类的去除率达75% — 93%,能满足矿井水淡化需求。但电渗析法对硅的去除基本 无作用,对3042_去除率很难超过65%。因此,电渗透发不适用于硫酸盐型矿井水,对于含硅 的废水应加强预处理。
[0005] 离子交换法是用离子交换剂上的离子和水中离子进行交换,而去除水中其它离子 的方法,通过离子交换可以制取软化水、脱盐水和纯水。采用离子交换法脱盐时,流程中既 要有阳离子交换器,又要有阴离子交换器。离子交换法去除离子种类多,生产过程稳定,可 浓缩回收有用物质,设备简单,操作控制容易,在处理中、低含盐量水有优势。但当进水总含 盐量较高时,采用离子交换法的成本较高,并且离子交换树脂工艺还会产生大量废酸废碱 液,导致环境污染。
[0006] 蒸馏法是海水淡化工业中成熟的技术。而从热源价格方面考虑,用蒸馏法处理含 盐量在3000mg/L以下矿井水成本较高,并且难以分离各种盐分。所以,蒸馏法很少单独应用 于高矿化度矿井水脱盐,往往需要配合其它浓缩工艺。
[0007] 反渗透法是借助于半透膜,在压力作用下,进行物质分离的方法,其能有效地去除 水中的无机盐、低分子有机物、病毒和细菌。目前,反渗透膜与组件的生产已相当成熟,膜的 脱盐率高于99.3 %,透水通量增加,抗污染和抗氧化能力不断提高。近几年来,反渗透技术 越来越来受到广泛应用,其技术成熟、成本低的特点已逐渐取代电渗析法。然而,单独采用 反渗透工艺不仅能耗高,易堵塞,而且不能得到纯的盐分。
[0008] 为此,迫切需要一种新的方法和装置,用以解决上述问题。
发明内容
[0009] 本发明的发明目的在于:针对采用反渗透法单独对高矿化度矿井水进行处理时, 存在能耗高、易堵塞的问题,提供一种矿井水资源化处理方法。本发明科学调控离子平衡, 使工艺性能更加稳定,有效延缓了反渗透膜污染;通过对SiO2的去除,从根本上解决了膜流 道结垢堵塞问题;在高级氧化工艺段在去除有机物、破除胶体的同时实现了消毒灭活过程, 并避免了氯离子的引入。本发明中,废水回用率99%以上,能实现废水零排放,提高固废和 副产物资源化利用价值,Na2SO4纯度达到99%以上,易于综合利用。进一步,本发明灵活性 强,能实现废水梯度净化、分质利用,最大程度地降低废水资源化利用成本,具有较高的应 用价值。
[0010] 为了实现上述目的,本发明采用如下技术方案:
[0011] —种矿井水资源化处理方法,包括如下步骤:
[0012] (1) 一次过滤处理
[0013] 将矿井水送入一级保安系统,通过一级保安系统的超滤膜进行一次过滤处理,以 降低废水中的SS;
[0014] (2)预浓缩处理
[0015] 将经步骤(1)中一级保安系统处理后的废水进入预浓缩系统进行反渗透处理,反 渗透处理的工作压力为2.0〜3.5Mpa,在预浓缩系统分别得到产水、浓水,将产水进行收集, 将浓水送入化学处理系统进行处理;
[0016] (3)化学处理
[0017] 将步骤(2)处理后的浓水送入化学处理系统,分别进行高级氧化、化学除硬处理 后,再进入二级保安系统;
[0018] ⑷二级保安处理
[0019] 经化学处理后的浓液直接进入二级保安系统,通过二级安保系统的超滤膜进行二 次过滤,去除其中的悬浮物,得到二级浓水;将二级浓水进行浓缩,去除其中的污泥,并将所 得滤液送入分盐系统处理;
[0020] (5)分盐处理
[0021] 将二级保安处理后所得滤液送入分盐系统中,通过分盐系统的荷电纳滤膜进行分 盐处理,分别得到分盐产水、分盐浓水,将分盐浓水送入深度浓缩系统进行处理,将分盐产 水进行收集;
[0022] ⑹深度浓缩处理
[0023] 将分盐浓水送入深度浓缩系统进行处理,深度浓缩系统采用高压反渗透膜,对高 压反渗透膜一侧的液体施加压力,从而在高压反渗透膜的低压侧得到三级产水,并将三级 产水进行收集;在高压反渗透膜的高压侧得到三级浓缩液;
[0024] ⑺二级成盐处理
[0025] 将步骤6所得三级浓缩液送入二级成盐单元,搅拌,并降温至0〜2°C,使硫酸钠析 出,收集析出的硫酸钠即可。
[0026] 所述步骤1中,超滤膜的孔径为0.05um〜lnm,工作压力0· 1〜0.5Mpa〇
[0027] 所述步骤1中,将矿井水进行澄清预处理后,再送入一级保安系统。
[0028] 所述步骤3中,高级氧化处理过程如下:在紫外光照射下,向步骤(2)处理后的浓水 中投加臭氧,通过紫外光提升臭氧的活化性能,并使臭氧与污染物直接反应,及臭氧与浓水 中其他离子所产生的· OH同污染物进行间接反应,实现高级氧化处理。
[0029] 所述步骤3中,在紫外光照射下,向步骤(2)处理后的浓水中投加臭氧,并将浓水的 pH值调节至5〜10,臭氧的添加量为2〜30mg/L。
[0030] 所述步骤3中,化学除硬处理过程如下:向浓水中添加氢氧化钠、碳酸钠,以去除浓 水中的钙盐、镁盐。
[0031] 所述步骤3中,碳酸钠的添加量为1.0〜5g/L;氢氧化钠的添加量以浓水的pH值计, 浓水的pH值为9.5〜13。
[0032] 所述步骤4中,超滤膜的孔径为0.05um〜lnm,工作压力0· 1〜0.8Mpa〇
[0033] 所述步骤3中,将脱除的污泥进行干燥处理后,进行填埋处理;污泥脱水产生的滤 液返回一级保安系统进行处理。
[0034] 所述步骤5中,调节滤液pH值至6〜7,分盐系统的操作压力为0.5〜3.8Mpa。
[0035] 所述步骤5中,将分盐产水收集,其主要成分为氯化钠,并对其中的氯化钠进行分 离、收集,得氯化钠产品。
[0036] 所述步骤5中,将分盐产水收集,经二级浓缩系统的反渗透膜浓缩,并将浓缩所得 浓缩液送入一级成盐单元进行蒸发结晶,分离得到氯化钠产品。
[0037] 所述步骤6中,调节分盐浓水的pH值至6〜7,深度浓缩系统的操作压力为6.5〜 7.OMpa〇
[0038] 所述步骤7中,硫酸钠析出后所得母液返回至步骤3中,进行化学处理。
[0039] 所述步骤7中,二级成盐单元的析晶温度为0〜2°C,搅拌速度为100RPM〜3000RPM。
[0040] 综上所述,本发明提供一种矿井水资源化处理工艺,尤其适用于高硫酸盐、高永久 性硬度水的矿井水。本发明中,废水经深度处理后能够达到《城市污水再生利用工业用水水 质》(GB/T19923-2005)乃至更高要求,既可用于工矿企业生产,也能满足《农田灌溉水质标 准》(GB 5084-2005),实现废水99%以上的综合利用。特殊的硫酸钠分离工艺可满足《工业 无水硫酸钠》(GB/T 6009-2014)中I类一等品要求。处理过程中产生的污泥为一般工业固体 废弃物,经脱水后送至填埋场进行填埋处置。
[0041] 综上所述,由于采用了上述技术方案,本发明的有益效果是:
[0042] (1)具有废水回收利用率高,资源化程度高和盐纯度高的特点,高级氧化工艺段在 去除有机物、破除胶体的同时实现了消毒灭活过程,避免了氯离子的引入;
[0043] (2)可实现废水零排放,废水回用率99%以上,提高固废和副产物资源化利用价 值,Na2SO4纯度达到99 %以上,易于综合利用;
[0044] (3)处理后出水水质达到《城市污水再生利用工业用水水质》(GB/T19923-2005)以 及《农田灌溉水质标准》(GB5084-2005)要求,可用于工业生产、农业灌溉、水产养殖以及城 市绿化等;经处理后水回收利用率可达99 %以上,得到的Na2SO4纯度彡99 %,满足《工业无水 硫酸钠》(GB/T6009-2014)中I类一等品纯度的要求;
[0045] ⑷通过科学调控离子平衡,使工艺性能更加稳定,有效延缓了膜污染;
[0046] ⑸通过对SiO2的去除,从根本上解决了膜流道结垢堵塞问题;
[0047] ⑹工艺流程简单,耐冲击负荷强,安全可靠,运行管理方便;
[0048] (7)本发明灵活性强,能实现废水梯度净化、分质利用,最大程度地降低废水资源 化利用成本,具有较高的应用价值。
附图说明
[0049] 本发明将通过例子并参照附图的方式说明,其中:
[0050] 图1为实施例1的工艺流程图。
[0051] 图2为硫酸钠、氯化钠的溶解温度曲线图。
具体实施方式
[0052] 本说明书中公开的所有特征,或公开的所有方法或过程中的步骤,除了互相排斥 的特征和/或步骤以外,均可以以任何方式组合。
[0053] 本说明书中公开的任一特征,除非特别叙述,均可被其他等效或具有类似目的的 替代特征加以替换。即,除非特别叙述,每个特征只是一系列等效或类似特征中的一个例子 而已。
[0054] 实施例1
[0055] 本实施例进行矿井水资源化处理的步骤如下。
[0056] (1) 一次过滤处理
[0057] 经澄清预处理后的矿井水送入一级保安系统,通过一级保安系统的超滤膜进行过 滤处理。本发明中,一级保安系统主要用于截留去除水中的悬浮物、胶体、微粒、细菌和病毒 等大分子物质,减少后续工艺单元处理负荷。本方法中的一级保安系统采用超滤膜,超滤是 介于微滤与纳滤之间,且三者之间无明显的分界线,超滤膜的孔径在〇.〇5um〜Inm之间,操 作压力为0.1〜〇.5Mpa,悬浮物去除率大于99%。一次过滤处理作为预浓缩系统的保安过 滤,降低废水中的SS。
[0058] (2)预浓缩处理
[0059] 经一级保安系统处理后的废水进入预浓缩系统进行反渗透处理。其中,预浓缩系 统采用反渗透,反渗透表面微孔的直径一般在0.5〜IOnm之间,是以压力差为推动力,从溶 液中分离出溶剂的膜分离操作。对膜一侧的液体施加压力,当压力超过它的渗透压时,溶剂 会逆着自然渗透的方向作反向渗透。从而在膜的低压侧得到透过的溶剂,即产水;高压侧得 到浓缩的溶液,即浓缩液。本方法中,预浓缩系统操作压力为2.0〜3.5Mpa,产水率为82 %〜 85%,从而减少后端分盐系统水力负荷,其中产水主要污染物浓度为溶解性总固体25〜 40mg/L,电导率45〜60yS/cm,硫酸盐10〜15mg/L,氯化物2〜3mg/L,钠8〜12mg/L,达到资源 化利用要求。
[0060] 经一级保安系统处理后的废水进入预浓缩系统,减少后端分盐系统水力负荷,浓 水进入化学处理系统进一步处理,产水收集。由于原水含有有机胶体、Si〇2、Ca2+、Mg2+等污染 物,经过浓缩后的废水中污染物的浓度进一步提高,直接进行分盐系统可能导致堵塞和结 垢,加入化学药剂进行处理,同时能除去废水中HCOA避免后期碳酸盐的生成。
[0061] (3)化学处理
[0062] 本工艺中,化学处理系统分为两部分:AOPs (高级氧化)和ROHs (化学除硬)。
[0063] AOPs (高级氧化):预浓缩系统的浓缩液在紫外光的照射下,投加臭氧,在该条件 下,主要由臭氧同污染物直接反应及臭氧与溶液中其他离子所产生的· OH同污染物的间接 反应两种方式共同完成,另外采用无极紫外灯作为紫外光源,在紫外光的照射下,臭氧的活 化性能得到大大提高。
[0064] 为研究AOPs (高级氧化)对浓水的处理效率,并用COD的去除率为评价指标,开展了 PH值对氧化效率的影响、不同浓度臭氧对浓缩液的处理效率实验。
[0065] A.不同pH值对氧化效率的影响
[0066] 用10 % H2S〇4将体系的pH值分别调整为4.23、5.16、6.14,用10% NaOH将体系的pH值 分别调整为8.07、9.12。处理水量0.20m3/h,臭氧投加浓度为6mg/L,进行O3氧化反应,实验氧 化结果如下表1所示。
[0067] 表1
[0069] 从上表1可见,pH值对O3氧化效率影响明显,随溶液pH值升高,C㈤的O3氧化去除率 增加,当PH值大于8,C0D的O3氧化去除率降低。当pH约为8时,O3氧化Ih即可去除水中约 83.62% 的 C0D。
[0070] B、不同浓度O3对COD的处理效果
[0071] 用10%Na0H将体系的pH值调整到8左右,处理水量0.20m3/h;03投加量分别为2mg/ 1、611^/1、1〇11^/1;不同〇3投加量氧化去除(1)0的结果见下表2。
[0072] 表2
[0074] 由上表2可见,随着O3投加量的升高,COD的去除率增大,当O3投加量为2mg/L时,反 应60min后COD去除了54 · 39 %。而6mg/L的O3氧化60min后可将COD去除84 · 07 %。而10mg/L的 O3氧化60min后可将COD去除83.90 %。
[0075] ROHs (化学除硬):预浓缩系统的浓缩液中含有大量Ca2+、Mg2+,为防止分盐系统堵 塞和结垢,需通过投加化学药剂NaOH和Na2CO3,Ca2+、Mg2+主要以Mg (OH) 2和CaCO3的形式去除, 使浓缩液的总硬度(以CaCO3计)小于50mg/L。另外,通过投加NaOH和Na2CO3调控离子平衡,使 工艺性能更加稳定,有效延缓了膜污染。
[0076] 为研究ROHs (化学除硬)对浓缩液的处理效率,并用总硬度(以Ca⑶3计)的去除率 为评价指标,开展了 PH值对除硬效率的影响、不同Na2CO3投加量对浓缩液的处理效率实验。
[0077] A、不同Na2CO3投加量对除硬的处理效果
[0078] 用10 %NaOH将体系的pH值调整到11.5左右,处理水量0.20m3/h; Na2CO3投加量分别 为2.0g/L、2.2g/L、2.4g/L、2.6g/L;不同Na2CO3投加量去除总硬度(以Ca⑶3计)的结果见下 表3 〇
[0079] 表3
[0081] 由上表3可见,随着Na2CO3投加量的升高,总硬度(以Ca⑶3计)的去除率增大,当 Na2CO3投加量大于2.4g/L时,反应后总硬度似CaCO3计)小于50mg/L,去除率大于98%。
[0082] B、不同pH对除硬的处理效果
[0083] 用 10 % NaOH 将体系的 pH 值调整到 10.5、11、11.5、12,处理水量 0 · 20m3/h,Na2CO3 投 加量为2.4g/L,不同pH去除总硬度(以CaCO3计)的结果见下表4。
[0084] 表4
[0086] 由上表4可见,随着pH升高,总硬度似CaCO3计)的去除率增大,当pH大于11.5时, 反应后总硬度(以CaCO3计)小于50mg/L,去除率大于98 %。
[0087] ⑷二级保安处理
[0088] 经化学处理后的浓液直接进入二级保安系统,二级保安系统采用超滤膜,经化学 处理后的浓缩液无需进行沉淀,可直接进入二级保安系统。超滤膜的孔径在0.05um〜Inm之 间,操作压力为〇. 1〜〇.5Mpa,主要用于截留去除水中的Mg (OH) 2和CaCO3组成的悬浮物,减少 后续工艺单元处理负荷。通过二级安保系统的超滤膜进行二次过滤,有效去除其中的悬浮 物。
[0089] 经二级保安系统后废水中总硬度(以Ca⑶3计)小于50mg/L,悬浮物小于5mg/L;浓 液主要成分为Mg (OH) 2和CaCO3,经脱水处理后可得含水率小于60%的污泥,外运至填埋场进 行处置,污泥脱水滤液回至一级保安过滤系统。
[0090] (5)分盐处理
[0091] 分盐系统主要用于将步骤4所得废水中的SO42-与废水中的一价阴离子分离,以便 得到纯净的Na2SO4,可达到资源化利用要求。分盐系统采用荷电纳滤膜,纳滤是一种介于反 渗透和超滤之间的压力驱动膜分离过程,纳滤膜的孔径范围在几个纳米左右。荷电纳滤膜 对无机盐有一定的脱除率,它允许溶剂分子或某些低分子量溶质或低价离子(一价离子)透 过,而截留大分子量溶质及二价或二价以上离子(尤其是阴离子),截留率可达98%以上。
[0092] 将二级保安处理后所得滤液送入分盐系统中,通过分盐系统的荷电纳滤膜进行分 盐处理,分别得到分盐产水、分盐浓水,将分盐浓水送入深度浓缩系统进行处理。
[0093] 本发明中,分盐系统的操作压力为0.5〜2Mpa,pH值为6〜7,产水率为83%〜86%, 其分盐产水中主要成分为NaCl,分盐产水可进行资源化利用。当资源化利用对水中的Cr要 求较高时,需要采用一次成盐系统进行NaCl分离;浓缩液(即分盐浓水)中主要成分为 Na2SO4,还含有少量的Cl' Ca2+、Mg2+等。
[0094] ⑹一次成盐处理
[0095] 本方法中的一次成盐处理属于备用处理系统,当资源化利用对水中的Cr要求较 高时,用于净化分盐系统的产水,分离NaCl。分盐产水先经二级浓缩进行处理,二级浓缩采 用反渗透膜浓缩,二级浓缩产水主要污染物浓度为溶解性总固体25〜40mg/L,电导率45〜 60yS/cm,硫酸盐10〜15mg/L,氯化物2〜3mg/L,钠8〜12mg/L,达到资源化利用要求。浓缩液 TDS含量达到10%,主要成分为NaCl,浓缩液进入一级成盐单元。一级成盐单元采用蒸发结 晶的方式,分离所得NaCl,冷凝水达到资源化利用要求。
[0096] ⑺深度浓缩处理
[0097] 本方法中的深度浓缩系统主要用于处理分盐系统的浓缩液,降低二级成盐单元的 水力负荷。深度浓缩系统采用高压反渗透膜,对膜一侧的液体施加压力,当压力超过它的渗 透压时,溶剂会逆着自然渗透的方向作反向渗透。从而在膜的低压侧得到透过的溶剂,即产 水,对所得产水进行收集;高压侧得到浓缩的溶液,即浓缩液。
[0098] 本方法中,深度浓缩单元操作压力为6.5〜7. OMpa,pH值为6〜7,产水率为50 %〜 55%,其中产水主要污染物浓度为溶解性总固体350〜40011^/1,电导率500〜55(^3/〇11,硫 酸盐150〜200mg/L,氯化物3〜5mg/L,钠100〜110mg/L,总硬度(以CaC〇3计)1〜3mg/L,达到 资源化利用要求。浓缩液溶解性总固体达到145000mg/L以上,其中主要成分为Na2S04。
[0099] ⑻二级成盐处理
[0100] 本方法中的二级成盐单元用于分离、回收、提纯深度浓缩液中的Na2S〇4,使其达到 资源化利用要求。分盐系统浓水经深度浓缩系统进一步浓缩后,浓液中TDS含量达到15%后 进入二级成盐单元,深度浓缩系统产水进入清水池。深度浓缩浓水经过二级成盐单元进行 成盐,分离所得Na2SO4纯度达99.5 %以上;由于浓缩后的母液中Ca2+,Mg2+进一步升高,母液 回流至化学处理系统。
[0101] 本方法中的二级成盐单元采用冷冻分离的方式,其理论基础是在低温环境下,一 般是〇〜30°C,硫酸钠和氯化钠的溶解度随温度的变化显著不同而实现两种盐分离。
[0102] 图2给出了硫酸钠、氯化钠的溶解度曲线图。从图2中可以看出,在30°C时,硫酸钠 的溶解度为48g,氯化钠的溶解度为36.3g,当温度降低到(TC时,硫酸钠的溶解度为4.9g,而 氯化钠的溶解度为35.7g。因此,在对体系进行降温的过程中,慢慢的会有硫酸钠晶体产生, 并随着溶液温度的不断降低,晶体颗粒逐渐长大,最终从溶液中沉降分离出来。
[0103] 为研究温度和搅拌速度对浓缩液中Na2S〇4分离的影响,并用Na2S〇4的产量和纯度 作为评价指标,开展了不同温度和不同搅拌速度对Na2SO4分离效率的实验。
[0104] A.不同温度对Na2S〇4分离效率的影响
[0105] 将14 %Na2SO4和0.5 % NaCl组成的溶液体系温度分别控制在-2 °C、0 °C、2 °C、4 °C,水 量为50L,搅拌速度300RPM,实验结果如下表5所示。
[0106] 表5
[0108] 由上表5可知,体系温度的变化对Na2SO4分离效率影响明显,温度越低,结晶盐产量 和纯度均增加,2 °C较4 °C增加明显,2 °C以下变化不大。
[0109] B.不同搅拌速度对Na2S〇4分离效率的影响
[0110] 将14%Na2S〇4和0.5%NaCl组成的溶液体系温度控制在2°C,水量为50L,搅拌速度 分别为1〇〇1«^、3001«^、5001«^、7001«^,实验结果如下表6所示。
[0112]由上表6可知,搅拌速度的变化对结晶盐产量影响不明显,但对结晶盐的纯度影响 较显著,搅拌速度越低,结晶盐纯度较低,从100RPM到300RPM增加明显,300RPM以上变化不 大。
[0113] ⑼矿井水处理结果
[0114] 经澄清后的矿井水进入一级保安系统,处理进水量30m3/h,控制操作压力0.2〜 0.25Mpa,预浓缩系统控制操作压力2.15〜2.251^»,控制产水率为85%;化学处理系统处理 进水量6m3/h,用10%Na0H将体系的pH值调整为8左右,臭氧投加量6mg/L,反应时间60min; 用10%Na0H将体系的pH值调整为11.5左右,Na2CO3投加量为2.4g/L,二级保安系统控制操作 压力0 · 51〜0 · 59Mpa,分盐系统控制操作压力2 · 7〜3 · OMpa,用10%H2S〇4将体系的pH值控制 在6〜7,控制产水率为85 %;深度浓缩系统处理进水量lm3/h,控制操作压力6.5〜6.8Mpa, 控制产水率为50 % ;二级成盐单元处理水量0.5m3/h,控制体系温度为0〜2°C,搅拌速度 300RPM,以溶解性总固体、总硬度(以CaCO3计)、SS、COD、钠、氯化物、硫酸盐、硫酸钠产量及 纯度作为评价指标,效果见下表7所示。
[0115] 表7
[0116]
[0117] 同时,经测定,无水硫酸钠产量为39.81kg/h,硫酸钠纯度为99.6%。
[0118] 本实施例中,废水经深度处理后能够达到《城市污水再生利用工业用水水质》(GB/ T19923-2005),既可用于工矿企业生产,也能满足《农田灌溉水质标准;KGB 5084-2005),实 现废水99%以上的综合利用。分离所得硫酸钠满足《工业无水硫酸钠》(GB/T 6009-2014)中 I类一等品要求。
[0119] 上述实验结果进一步表明,采用本发明处理矿井水是可行的,并且具有较好的效 果。本发明并不局限于前述的具体实施方式。本发明扩展到任何在本说明书中披露的新特 征或任何新的组合,以及披露的任一新的方法或过程的步骤或任何新的组合。
Claims (10)
1. 一种矿井水资源化处理方法,其特征在于,包括如下步骤: (1) 一次过滤处理 将澄清预处理后的矿井水送入一级保安系统,通过一级保安系统的超滤膜进行一次过 滤处理,以降低废水中的SS; (2) 预浓缩处理 将经步骤(1)中一级保安系统处理后的废水进入预浓缩系统进行反渗透处理,反渗透 处理的工作压力为2.0〜3.5Mpa,在预浓缩系统分别得到产水、浓水,将产水进行收集,将浓 水送入化学处理系统进行处理; (3) 化学处理 将步骤(2)处理后的浓水送入化学处理系统,分别进行高级氧化、化学除硬处理后,再 进入二级保安系统; (4) 二级保安处理 经化学处理后的浓液直接进入二级保安系统,通过二级安保系统的超滤膜进行二次过 滤,去除其中的悬浮物,得到二级浓水;将二级浓水进行浓缩,去除其中的污泥,并将所得滤 液送入分盐系统处理; (5) 分盐处理 将二级保安处理后所得滤液送入分盐系统中,通过分盐系统的荷电纳滤膜进行分盐处 理,分别得到分盐产水、分盐浓水,将分盐浓水送入深度浓缩系统进行处理,将分盐产水进 行收集; (6) 深度浓缩处理 将分盐浓水送入深度浓缩系统进行处理,深度浓缩系统采用高压反渗透膜,对高压反 渗透膜一侧的液体施加压力,从而在高压反渗透膜的低压侧得到三级产水,并将三级产水 进行收集;在高压反渗透膜的高压侧得到三级浓缩液; (7) 二级成盐处理 将步骤6所得三级浓缩液送入二级成盐单元,搅拌,并降温至O〜2°C,使硫酸钠析出,收 集析出的硫酸钠即可。
2. 根据权利要求1所述矿井水资源化处理方法,其特征在于,所述步骤1中,超滤膜的 孔径为〇.〇5觀~1]1111,工作压力0.1~0.5]\^)已。
3. 根据权利要求1所述矿井水资源化处理方法,其特征在于,所述步骤3中,高级氧化处 理过程如下:在紫外光照射下,向步骤(2)处理后的浓水中投加臭氧,通过紫外光提升臭氧 的活化性能,并使臭氧与污染物直接反应,及臭氧与浓水中其他离子所产生的·〇Η同污染物 进行间接反应,实现高级氧化处理。
4. 根据权利要求3所述矿井水资源化处理方法,其特征在于,所述步骤3中,在紫外光照 射下,向步骤(2)处理后的浓水中投加臭氧,并将浓水的pH值调节至5〜10,臭氧的添加量为2 ~30mg/L〇
5. 根据权利要求1〜4任一项所述矿井水资源化处理方法,其特征在于,所述步骤3中,化 学除硬处理过程如下:向浓水中添加氢氧化钠、碳酸钠,以去除浓水中的钙盐、镁盐。
6. 根据权利要求5所述矿井水资源化处理方法,其特征在于,所述步骤3中,碳酸钠的添 加量为1. 〇〜5g/L;氢氧化钠的添加量以浓水的pH值计,浓水的pH值为9.5〜13。
7. 根据权利要求1所述矿井水资源化处理方法,其特征在于,所述步骤4中,超滤膜的 孔径为0.05 um〜I nm,工作压力0.1〜0.8 Mpa0
8. 根据权利要求1所述矿井水资源化处理方法,其特征在于,所述步骤5中,调节滤液pH 值至6〜7,分盐系统的操作压力为0 · 5〜3 · 8Mpa。
9. 根据权利要求1〜8任一项所述矿井水资源化处理方法,其特征在于,所述步骤5中,将 分盐产水收集,经二级浓缩系统的反渗透膜浓缩,并将浓缩所得浓缩液送入一级成盐单元 进行蒸发结晶,分离得到氯化钠产品。
10. 根据权利要求1所述矿井水资源化处理方法,其特征在于,所述步骤6中,调节分盐 浓水的pH值至6〜7,深度浓缩系统的操作压力为6.5〜7. OMpa。
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