CN103896457A - Fine chemical wastewater treatment process - Google Patents

Fine chemical wastewater treatment process Download PDF

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CN103896457A
CN103896457A CN201410129246.9A CN201410129246A CN103896457A CN 103896457 A CN103896457 A CN 103896457A CN 201410129246 A CN201410129246 A CN 201410129246A CN 103896457 A CN103896457 A CN 103896457A
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毛晓宇
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ANQING FENGYUAN CHEMICAL Co Ltd
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Abstract

The invention discloses a fine chemical wastewater treatment process. The fine chemical wastewater treatment process comprises the following steps of: (1) treating by pre-oxidation, namely, adding wastewater to a floatation tank through an adjusting tank, and then adding an inorganic strong oxide to the floatation tank to treat the wastewater by oxidizing; (2) performing hydrolytic acidification; (3) performing biological treatment, namely, performing biological treatment for the acidified wastewater through an anaerobic tank and an aerobic tank in sequence; (4) treating through activated sludge, namely, treating the wastewater subjected to biological treatment through a mudpack MBBR (Moving Bed Biofilm Reactor) and activated sludge; (5) flocculating and settling, namely, transferring the treated activated sludge into a flocculating and settling tank, then adding 30% of sodium hydroxide to adjust the pH to be 8 to 9, adding 30-4-mg/L of PAC (Poly Aluminium Chloride), and finally adding 70 to 90mg/L of flocculating agent to separate mud and water; and (6) deeply treating, namely, performing rough filtration and fine filtration for the output water in sequence, and then treating by an RO (Reverse Osmosis) film. With the adoption of the fine chemical wastewater treatment process, the biodegradability of wastewater can be improved, organic matters in wastewater can be removed efficiently, the wastewater can be recovered and recycled, and thus the water resource is saved; in addition, the recovery process is short, and the system recovery rate is high.

Description

一种精细化工废水处理工艺A fine chemical wastewater treatment process

技术领域technical field

本发明涉及化工领域，尤其涉及一种精细化工废水处理工艺。The invention relates to the field of chemical industry, in particular to a fine chemical wastewater treatment process.

背景技术Background technique

精细化工产品生产过程中产生的废水，有机污染物含量较高，根据工艺的不同还具有其他的特点，如含盐浓度高、有毒、有色物质含量高、生物难降解物质多，废水可生化降解性差等特点，常规的物化和生化处理难以达到排放要求，长期以来工程达标率严重不足。The wastewater produced in the production process of fine chemical products has a high content of organic pollutants. According to different processes, it also has other characteristics, such as high salt concentration, toxic, high content of colored substances, and many biodegradable substances. The wastewater can be biodegraded. It is difficult to meet the discharge requirements through conventional physical, chemical and biochemical treatments, and the compliance rate of projects has been seriously insufficient for a long time.

发明内容Contents of the invention

本发明的目的是克服现有技术的不足，提供一种提高精细化工废水的可生化性，以较高效率去除污水中的有机物的废水处理工艺，对废水进行回收和利用，节约水资源。The purpose of the present invention is to overcome the deficiencies of the prior art, provide a wastewater treatment process that improves the biodegradability of fine chemical wastewater, removes organic matter in the wastewater with high efficiency, recycles and utilizes the wastewater, and saves water resources.

为了实现上述目的本发明采用如下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:

一种精细化工废水处理工艺，包括以下步骤：A fine chemical wastewater treatment process, comprising the following steps:

（1）预氧化处理：废水经过调节池，进入气浮池，向气浮池中加入无机强氧化物进行废水氧化处理，加入的量为80-100mg/L，预处理时间为12-15分钟；(1) Pre-oxidation treatment: Wastewater enters the air flotation tank through the regulating tank, and adds inorganic strong oxides to the air flotation tank for wastewater oxidation treatment. The amount added is 80-100mg/L, and the pretreatment time is 12-15 minutes;

（2）水解酸化：把氧化处理后的化工废水置于水解酸化池进行水解酸化，水解时间为4-5小时；(2) Hydrolytic acidification: put the oxidized chemical wastewater in the hydrolytic acidification tank for hydrolysis and acidification, and the hydrolysis time is 4-5 hours;

（3）生物处理：将酸化后的废水依次经过厌氧池、好氧池生物处理；(3) Biological treatment: the acidified wastewater is biologically treated in an anaerobic pool and an aerobic pool in turn;

（4）活血污泥处理：将生物处理后废水经过泥膜MBBR和活性污泥处理；(4) Activated blood sludge treatment: the biologically treated wastewater is treated with mud membrane MBBR and activated sludge;

（5）絮凝沉降：活血污泥处理后进入混凝反应池，先加入30%的氢氧化钠调节PH值到8-9并按30-4-mg/L的用量加入PAC，然后按70-90mg/L的用量加入絮凝剂进行泥水分离；(5) Flocculation and sedimentation: after treatment, the live blood sludge enters the coagulation reaction tank, firstly add 30% sodium hydroxide to adjust the pH value to 8-9 and add PAC according to the dosage of 30-4-mg/L, and then press 70- The amount of 90mg/L is added flocculant for mud-water separation;

（6）深度处理：出水依次经过粗滤、精滤后进入RO膜处理。(6) Advanced treatment: the effluent is treated by the RO membrane after coarse filtration and fine filtration.

所述的无机强氧化物为氯酸钠、锰酸钠、高铁酸钠、氧化镍和氧化铈中的一种或多种。The strong inorganic oxide is one or more of sodium chlorate, sodium manganate, sodium ferrate, nickel oxide and cerium oxide.

所述的厌氧池为UASB厌氧污泥膨胀池。The anaerobic tank is a UASB anaerobic sludge bulking tank.

所述的好氧池是值好氧生物滤池。The aerobic pool is an aerobic biological filter.

所述的絮凝剂为聚合氧化铝、聚丙烯氨酰中一种或两种。The flocculant is one or two of polyalumina and polyacrylamide.

与已有技术相比，本发明的有益效果如下：Compared with the prior art, the beneficial effects of the present invention are as follows:

本发明可以提高废水的可生化性，以较高效率去除污水中的有机物，设备结构简单，便于操作和维修，对废水进行回收和利用，节约水资源，具有良好的经济和环境效益，回收工艺流程短，系统回收率高。The invention can improve the biodegradability of waste water, remove organic matter in the waste water with high efficiency, has simple equipment structure, is convenient for operation and maintenance, recycles and utilizes waste water, saves water resources, has good economic and environmental benefits, and has a recycling process The process is short and the system recovery rate is high.

具体实施方式Detailed ways

下面结合实施例对本发明作进一步的描述。The present invention will be further described below in conjunction with embodiment.

实施例1：Example 1:

本实施例采用如下指标的精细化工废水：The present embodiment adopts the fine chemical waste water of following index:

Figure BDA0000485832800000021
Figure BDA0000485832800000021

一种精细化工废水处理工艺，包括以下步骤：A fine chemical wastewater treatment process, comprising the following steps:

（1）预氧化处理：废水经过调节池，进入气浮池，向气浮池中加入氯酸钠、锰酸钠、高铁酸钠、氧化镍和氧化铈，进行废水氧化处理，加入的量为100mg/L，预处理时间为15分钟；(1) Pre-oxidation treatment: Wastewater enters the air flotation tank through the regulating tank, and sodium chlorate, sodium manganate, sodium ferrate, nickel oxide and cerium oxide are added to the air flotation tank to carry out oxidation treatment of wastewater, and the amount added is 100mg/ L, the pretreatment time is 15 minutes;

（2）水解酸化：把氧化处理后的化工废水置于水解酸化池进行水解酸化，水解时间为5小时；(2) Hydrolysis and acidification: Put the oxidized chemical wastewater in the hydrolysis and acidification tank for hydrolysis and acidification, and the hydrolysis time is 5 hours;

（3）生物处理：将酸化后的废水依次经过UASB厌氧污泥膨胀池、好氧生物滤池进行生物处理；(3) Biological treatment: the acidified wastewater is passed through the UASB anaerobic sludge expansion tank and the aerobic biological filter for biological treatment;

（4）活血污泥处理：将生物处理后废水经过泥膜MBBR和活性污泥处理；(4) Activated blood sludge treatment: the biologically treated wastewater is treated with mud membrane MBBR and activated sludge;

（5）絮凝沉降：活血污泥处理后进入混凝反应池，先加入30%的氢氧化钠调节PH值到8并按30mg/L的用量加入PAC，然后按80mg/L的用量加入聚合氧化铝和聚丙烯氨酰进行泥水分离；(5) Flocculation and sedimentation: After the blood sludge is treated, it enters the coagulation reaction tank. First, 30% sodium hydroxide is added to adjust the pH value to 8, and PAC is added in an amount of 30 mg/L, and then polymerization oxidation is added in an amount of 80 mg/L. Aluminum and polyacrylamide for mud-water separation;

（6）深度处理：出水依次经过粗滤、精滤后进入RO膜处理。(6) Advanced treatment: the effluent is treated by the RO membrane after coarse filtration and fine filtration.

下表为该工艺对精细化工废水的处理效果：The following table shows the treatment effect of this process on fine chemical wastewater:

Claims (5)

1.一种精细化工废水处理工艺，其特征在于：包括以下步骤：1. A fine chemical industry wastewater treatment process, characterized in that: comprises the following steps: （1）预氧化处理：废水经过调节池，进入气浮池，向气浮池中加入无机强氧化物进行废水氧化处理，加入的量为80-100mg/L，预处理时间为12-15分钟；(1) Pre-oxidation treatment: Wastewater enters the air flotation tank through the regulating tank, and adds inorganic strong oxides to the air flotation tank for wastewater oxidation treatment. The amount added is 80-100mg/L, and the pretreatment time is 12-15 minutes; （2）水解酸化：把氧化处理后的化工废水置于水解酸化池进行水解酸化，水解时间为4-5小时；(2) Hydrolytic acidification: put the oxidized chemical wastewater in the hydrolytic acidification tank for hydrolysis and acidification, and the hydrolysis time is 4-5 hours; （3）生物处理：将酸化后的废水依次经过厌氧池、好氧池生物处理；(3) Biological treatment: the acidified wastewater is biologically treated in an anaerobic pool and an aerobic pool in turn; （4）活血污泥处理：将生物处理后废水经过泥膜MBBR和活性污泥处理；(4) Activated blood sludge treatment: the biologically treated wastewater is treated with mud membrane MBBR and activated sludge; （5）絮凝沉降：活血污泥处理后进入混凝反应池，先加入30%的氢氧化钠调节PH值到8-9并按30-4-mg/L的用量加入PAC，然后按70-90mg/L的用量加入絮凝剂进行泥水分离；(5) Flocculation and sedimentation: after treatment, the live blood sludge enters the coagulation reaction tank, firstly add 30% sodium hydroxide to adjust the pH value to 8-9 and add PAC according to the dosage of 30-4-mg/L, and then press 70- The amount of 90mg/L is added flocculant for mud-water separation; （6）深度处理：出水依次经过粗滤、精滤后进入RO膜处理。(6) Advanced treatment: the effluent is treated by the RO membrane after coarse filtration and fine filtration. 2.根据权利要求1所述的精细化工产品废水处理工艺，其特征在于：所述的无机强氧化物为氯酸钠、锰酸钠、高铁酸钠、氧化镍和氧化铈中的一种或多种。2. The fine chemical product wastewater treatment process according to claim 1, characterized in that: the strong inorganic oxide is one or more of sodium chlorate, sodium manganate, sodium ferrate, nickel oxide and cerium oxide Various. 3.根据权利要求1所述的精细化工产品废水处理工艺，其特征在于：所述的厌氧池为UASB厌氧污泥膨胀池。3. The fine chemical product wastewater treatment process according to claim 1, characterized in that: the anaerobic tank is a UASB anaerobic sludge expansion tank. 4.根据权利要求1所述的精细化工产品废水处理工艺，其特征在于：所述的好氧池是好氧生物滤池。4. The fine chemical product wastewater treatment process according to claim 1, characterized in that: the aerobic pool is an aerobic biological filter. 5.根据权利要求1所述的精细化工产品废水处理工艺，其特征在于：所述的絮凝剂为聚合氧化铝、聚丙烯氨酰中一种或两种。5. The fine chemical product wastewater treatment process according to claim 1, characterized in that: the flocculant is one or both of polymerized alumina and polyacrylamide.
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CN105254117A (en) * 2015-09-24 2016-01-20 安庆丰源化工有限公司 Treatment method of fine chemical engineering oily wastewater
CN105819633A (en) * 2016-05-30 2016-08-03 安庆丰源化工有限公司 Method for chemical wastewater treatment
CN110357371A (en) * 2019-08-28 2019-10-22 杨柳 A kind of refined processing method of chemical spent material sewage
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105254117A (en) * 2015-09-24 2016-01-20 安庆丰源化工有限公司 Treatment method of fine chemical engineering oily wastewater
CN105819633A (en) * 2016-05-30 2016-08-03 安庆丰源化工有限公司 Method for chemical wastewater treatment
US20230002258A1 (en) * 2018-05-03 2023-01-05 Headworks Bio, Inc. Systems and methods for oxidizing disinfectants combined with moving bed biofilm reactors
CN110357371A (en) * 2019-08-28 2019-10-22 杨柳 A kind of refined processing method of chemical spent material sewage

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