CN103508637B - Traditional Chinese medicine wastewater treatment system and method for treating traditional Chinese medicine wastewater - Google Patents
Traditional Chinese medicine wastewater treatment system and method for treating traditional Chinese medicine wastewater Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 112
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 16
- 239000010802 sludge Substances 0.000 claims abstract description 76
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- 238000006460 hydrolysis reaction Methods 0.000 claims description 12
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- 239000003344 environmental pollutant Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000002957 persistent organic pollutant Substances 0.000 claims description 7
- 231100000719 pollutant Toxicity 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 6
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- -1 iron ions Chemical class 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
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- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 abstract description 10
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Abstract
本发明公开了一种中药废水处理系统及其处理中药废水的方法，中药废水处理系统包括预处理系统，生化处理系统，深度处理系统和污泥处理系统四部分组成。废水储池，三维电解池，砂滤罐，二滤池，伴有曝气装置在与处理系统中主要起吹脱作用，去除废水中氯仿，使后续处理构筑物中微生物得以生存，解决中药废水难以生化的缺点；本发明将三维电解用于废水处理中，经过试验得电解废水24小时可以降解废水80%的COD，对处理高难度有机废水效果很明显，增大了废水的可生化性；本发明将混凝沉淀过滤，吹脱，三维电解，生化处理很好的结合运用，出水水质清澈，工艺成本低。
The invention discloses a traditional Chinese medicine wastewater treatment system and a method for treating the traditional Chinese medicine wastewater. The traditional Chinese medicine wastewater treatment system comprises four parts: a pretreatment system, a biochemical treatment system, an advanced treatment system and a sludge treatment system. Wastewater storage tank, three-dimensional electrolytic tank, sand filter tank, secondary filter tank, and aeration device mainly play the role of blowing off in the treatment system, remove chloroform in wastewater, enable microorganisms in subsequent treatment structures to survive, and solve the difficult problem of traditional Chinese medicine wastewater Biochemical disadvantages; the present invention uses three-dimensional electrolysis in wastewater treatment, and the electrolytic wastewater can degrade 80% of the COD in wastewater after 24 hours of testing, and the effect on treating difficult organic wastewater is obvious, increasing the biodegradability of wastewater; The invention combines coagulation sedimentation filtration, air stripping, three-dimensional electrolysis, and biochemical treatment, resulting in clear effluent quality and low process cost.
Description
技术领域 technical field
本发明涉及一种废水处理新工艺，特别涉及一种中药废水处理系统及其处理中药废水的方法。 The invention relates to a new wastewater treatment process, in particular to a traditional Chinese medicine wastewater treatment system and a method for treating traditional Chinese medicine wastewater.
背景技术 Background technique
中药废水污染主要是高浓度有机废水，来自生产车间，在洗泡蒸煮药材、冲洗、制剂等过程产生。废水包括生产过程中的原药洗涤废水，原药药汁残液、过滤、蒸馏、萃取等单元产生的废水。中药废水主要成分有分有糖类、乙醇、氯仿、苷类、蒽醌、木质素、生物碱、鞣质、蛋白质、色素等物质，有机污染物浓度相当高，木质素等的悬浮物比重轻、浓度高，难于沉淀，废水可生化性差，废水的水质、水量随着中药生产操作的间歇性和产品种类的多样性波动也比较大，相对于其他工业废水中药生产废水是较难处理的废水之一。 Traditional Chinese medicine wastewater pollution is mainly high-concentration organic wastewater, which comes from the production workshop and is produced during the process of washing and cooking medicinal materials, washing, and preparation. Wastewater includes raw drug washing wastewater in the production process, raw drug juice residue, filtration, distillation, extraction and other units of waste water. The main components of traditional Chinese medicine wastewater are sugar, ethanol, chloroform, glycosides, anthraquinone, lignin, alkaloid, tannin, protein, pigment and other substances. The concentration of organic pollutants is quite high, and the suspended solids such as lignin have a light specific gravity. , high concentration, difficult to settle, poor biochemical properties of wastewater, and the water quality and volume of wastewater fluctuate greatly with the intermittent production of traditional Chinese medicine and the variety of product types. Compared with other industrial wastewater, traditional Chinese medicine production wastewater is more difficult to treat. one.
目前处理中药废水技术水平还不够高，很难实现达标排放，即使达标排放投入资金也会很大。传统的处理方法主要为化学方法，但化学药品较贵，处理费用较高，企业难以承受，同时化学药品又会对环境造成二次污染。目前常用的工艺为废水经过格栅流入初沉池，经过初沉池去除部分悬浮物进入调节池，然后自流到中和曝气池，经过曝气池后进入生化处理单元，即废水进入A2O、或者厌氧UASB反应后流入二沉池，然后达标排放，有些废水还接有深度处理部分；污泥经过污泥浓缩池，压缩机压缩污泥，泥饼外运。 At present, the technical level of treating traditional Chinese medicine wastewater is not high enough, and it is difficult to achieve standard discharge. Even if the standard discharge is achieved, the investment will be huge. The traditional treatment methods are mainly chemical methods, but the chemicals are expensive and the treatment costs are high, which is unbearable for enterprises. At the same time, the chemicals will cause secondary pollution to the environment. At present, the commonly used process is that the waste water flows into the primary sedimentation tank through the grid, removes part of the suspended matter through the primary sedimentation tank, enters the adjustment tank, and then flows to the neutralization aeration tank by itself, and then enters the biochemical treatment unit after passing through the aeration tank, that is, the wastewater enters A2O, Or the anaerobic UASB reaction flows into the secondary sedimentation tank, and then discharges up to the standard, and some wastewater is connected to the advanced treatment part; the sludge passes through the sludge concentration tank, the compressor compresses the sludge, and the mud cake is transported outside.
目前相关中药废水处理工艺很多，国内外也对制药废水的处理进行了卓有成效的研究，目前较为理想的处理方法是物理、化学和生物处理方法相结合。例如上述处理工艺，但还存在很多问题。1）废水预处理功能不够好，很多中药废水中含有氯仿，乙醇等有机溶剂，当废水中的氯仿含量在0.5mg /L情况下, 就会使微生物休眠, 使生物处理难以进行，造成后续处理单元难以运行；2）中药废水污染物浓度高，悬浮物比重轻、难于沉淀，废水可生化性差，常用的上述废水处理工艺很难达标；3）有些工艺降解效果明显，但需要化学药剂量大，成本较高。 At present, there are many related traditional Chinese medicine wastewater treatment processes, and fruitful research has been carried out on the treatment of pharmaceutical wastewater at home and abroad. At present, the ideal treatment method is a combination of physical, chemical and biological treatment methods. Such as the above-mentioned treatment process, but there are still many problems. 1) The wastewater pretreatment function is not good enough. Many traditional Chinese medicine wastewater contains organic solvents such as chloroform and ethanol. When the chloroform content in the wastewater is 0.5mg/L, it will make the microorganisms dormant, making it difficult to carry out biological treatment, resulting in subsequent treatment The unit is difficult to operate; 2) The concentration of pollutants in traditional Chinese medicine wastewater is high, the specific gravity of suspended solids is light, it is difficult to settle, and the biodegradability of wastewater is poor. ,higher cost.
发明内容 Contents of the invention
本发明的目的在于提供一种中药废水处理系统及其采用此系统处理中药废水的方法，以克服现有技术中存在的不足，使中药废水中难降解有机物有效降解，达标排放。 The object of the present invention is to provide a traditional Chinese medicine wastewater treatment system and a method for treating traditional Chinese medicine wastewater using the system, so as to overcome the deficiencies in the prior art, effectively degrade the refractory organic matter in the traditional Chinese medicine wastewater, and discharge it up to the standard.
为实现上述发明目的，本发明所采用的技术方案如下：一种中药废水处理系统，包括预处理系统，生化处理系统，深度处理系统和污泥处理系统； In order to achieve the above invention, the technical scheme adopted in the present invention is as follows: a traditional Chinese medicine wastewater treatment system, including a pretreatment system, a biochemical treatment system, an advanced treatment system and a sludge treatment system;
其中所述预处理系统包括废水储池、三维电解池、一级反应沉淀罐、砂滤罐、二级反应罐、二滤池和中间水池；废水储池中设置有空气搅拌系统、空气泵和提升泵，废水储池的出水管连通三维电解池，三维电解池内设置有三维电极，三维电解池的出水管连通一级反应沉淀罐，一级反应沉淀罐内部安装有搅拌机，一级反应沉淀罐旁设有第一加药装置，一级反应沉淀罐的出水管连通砂滤罐，砂滤罐的出水管连通二级反应罐，二级反应罐旁建有第二加药装置，二级反应罐的出水管连通二滤池，二滤池内设置石灰石滤料，二滤池的出水管连通中间水池，中间水池内部装有提升泵； Wherein the pretreatment system includes a waste water storage tank, a three-dimensional electrolytic cell, a primary reaction sedimentation tank, a sand filter tank, a secondary reaction tank, a second filter tank and an intermediate pool; the waste water storage tank is provided with an air stirring system, an air pump and The lift pump, the outlet pipe of the wastewater storage tank is connected to the three-dimensional electrolytic cell, and the three-dimensional electrode is installed in the three-dimensional electrolytic cell, and the outlet pipe of the three-dimensional electrolytic cell is connected to the first-stage reaction sedimentation tank. There is a first dosing device next to it, the outlet pipe of the primary reaction sedimentation tank is connected to the sand filter tank, the outlet pipe of the sand filter tank is connected to the secondary reaction tank, and a second dosing device is built next to the secondary reaction tank, and the secondary reaction tank The outlet pipe of the tank is connected to the second filter tank, and the limestone filter material is arranged in the second filter tank, and the outlet pipe of the second filter tank is connected to the middle pool, and a lift pump is installed inside the middle pool;
所述生化处理系统包括水解厌氧池和生化沉淀池，中间水池的出水管接入水解厌氧池，水解厌氧池的出水管接入生化沉淀池； The biochemical treatment system includes a hydrolysis anaerobic tank and a biochemical sedimentation tank, the outlet pipe of the intermediate pool is connected to the hydrolysis anaerobic tank, and the outlet pipe of the hydrolysis anaerobic tank is connected to the biochemical sedimentation tank;
所述深度处理系统包括炭滤池，生化沉淀池的出水管接入炭滤池，炭滤池的出水直接排放； The advanced treatment system includes a carbon filter, the outlet pipe of the biochemical sedimentation tank is connected to the carbon filter, and the effluent of the carbon filter is directly discharged;
所述污泥处理系统包括污泥浓缩池、污泥脱水间，一级反应沉淀罐、砂滤罐、二级反应罐和生化沉淀池的污泥管连接污泥浓缩池，污泥浓缩池的上清液通过出水管排入上清液收集池后进入废水储池，污泥浓缩池的排泥管通过污泥泵接入污泥脱水间，污泥脱水间设置有板框压滤机，从污泥脱水间排出的滤液通过出水管排入上清液收集池后进入废水储池，排出的污泥进行污泥混烧。 The sludge treatment system includes a sludge thickening tank, a sludge dehydration room, a primary reaction sedimentation tank, a sand filter tank, a secondary reaction tank, and a biochemical sedimentation tank. The sludge pipe is connected to the sludge thickening tank, and the sludge thickening tank The supernatant is discharged into the supernatant collection tank through the outlet pipe and then enters the wastewater storage tank. The sludge discharge pipe of the sludge concentration tank is connected to the sludge dewatering room through the sludge pump. The sludge dehydration room is equipped with a plate and frame filter press. The filtrate discharged from the sludge dehydration room is discharged into the supernatant liquid collection tank through the outlet pipe and then enters the waste water storage tank, and the discharged sludge is mixed with sludge.
在所述生化处理系统中还包括鼓风机房，鼓风机房的空气管分别连通废水储池、三维电解池、砂滤罐、二滤池生化沉淀池和炭滤池。 The biochemical treatment system also includes a blower room, and the air pipes in the blower room are respectively connected to the waste water storage tank, the three-dimensional electrolytic tank, the sand filter tank, the secondary filter biochemical sedimentation tank and the carbon filter tank.
所述第一加药装置所加药为PAC和PAM，所述第二加药装置所加药为氧化剂。所述氧化剂为芬顿试剂。 The drugs added by the first drug adding device are PAC and PAM, and the drugs added by the second drug adding device are oxidants. The oxidizing agent is Fenton's reagent.
所述废水储池、三维电解池、砂滤罐、二滤池、生化沉淀池、炭滤池中都设置有曝气装置。 Aeration devices are arranged in the waste water storage tank, the three-dimensional electrolytic tank, the sand filter tank, the second filter tank, the biochemical sedimentation tank and the carbon filter tank.
采用系统处理中药废水的方法，包括以下步骤： The method for systematically treating traditional Chinese medicine wastewater comprises the following steps:
（1） 预处理 (1) Preprocessing
中药废水通过管道送至废水储池，在废水储池中设置空气搅拌系统，通过空气泵加入空气，保证废水中悬浮物处于悬浮状态，防止在池底沉淀，废水储池中的废水通过泵提升至三维电解池，三维电解池内设置有三维电极，使废水中有机污染物在电场作用下发生多效微电解反应，得以去除；之后废水进入一级反应沉淀罐，一级反应沉淀罐中加入PAC、PAM，搅拌机搅拌均匀后，静止沉淀2h，在砂滤罐过滤，之后电磁阀开启，废水自流进入二级反应罐，在二级反应罐中加入铁离子和双氧水，搅拌机搅拌均匀后，静止沉淀2h，进入二滤池过滤，二滤池内设置石灰石滤料，截留住二级反应罐内产生的颗粒污染物，同时调节废水的pH至中性，经过二滤池的废水自流进入中间水池； Traditional Chinese medicine wastewater is sent to the wastewater storage tank through pipelines. An air stirring system is installed in the wastewater storage tank, and air is added through an air pump to ensure that the suspended solids in the wastewater are in a suspended state and prevent sedimentation at the bottom of the tank. The wastewater in the wastewater storage tank is lifted by the pump. To the three-dimensional electrolytic cell, the three-dimensional electrolytic cell is equipped with a three-dimensional electrode, so that the organic pollutants in the wastewater undergo a multi-effect micro-electrolysis reaction under the action of an electric field, and can be removed; after that, the wastewater enters the first-stage reaction sedimentation tank, and PAC is added to the first-stage reaction sedimentation tank , PAM, after stirring evenly with the mixer, settle for 2 hours, filter in the sand filter tank, then open the solenoid valve, and the waste water flows into the secondary reaction tank by itself, add iron ions and hydrogen peroxide into the secondary reaction tank, stir evenly with the mixer, and settle still 2h, enter the second filter tank for filtration, and set limestone filter material in the second filter tank to intercept the particulate pollutants generated in the second reaction tank, and at the same time adjust the pH of the wastewater to neutral, and the wastewater passing through the second filter tank flows into the middle pool by itself;
（2） 生化处理 (2) Biochemical treatment
废水从中间水池由泵提升后进入水解厌氧池和生化沉淀池，生化沉淀池由厌氧生物反应器和好氧反应沉淀池组成，废水在生化处理系统中通过微生物的降解，去除有机污染物，废水经过沉淀后，自流进入深度处理系统； Wastewater is pumped from the intermediate tank and then enters the hydrolysis anaerobic tank and biochemical sedimentation tank. The biochemical sedimentation tank is composed of anaerobic bioreactor and aerobic reaction sedimentation tank. Wastewater is degraded by microorganisms in the biochemical treatment system to remove organic pollutants After sedimentation, the wastewater flows into the advanced treatment system by itself;
（3） 深度处理 (3) Advanced processing
经生化处理系统后的出水通过炭滤池内活性炭过滤器的过滤处理进一步去除残余污染物，排入市政管网至城市污水处理厂进一步处理； After the biochemical treatment system, the effluent is filtered through the activated carbon filter in the carbon filter to further remove residual pollutants, and discharged into the municipal pipe network to the urban sewage treatment plant for further treatment;
（4） 污泥处理 (4) Sludge treatment
一级反应沉淀罐、砂滤罐、二级反应罐、生化沉淀池所产生的污泥排入污泥浓缩池，经过间歇污泥浓缩池进行浓缩污泥，浓缩污泥由污泥泵送至板框压滤机再进行脱水处理，污泥浓缩和脱水过程中排出的上清液及滤液均由排水系统收集后，排回废水储池，从板框压滤机排出的的污泥进行污泥混烧。 The sludge produced by the primary reaction sedimentation tank, sand filter tank, secondary reaction tank and biochemical sedimentation tank is discharged into the sludge concentration tank, and the sludge is concentrated through the intermittent sludge concentration tank, and the concentrated sludge is pumped from the sludge to The plate and frame filter press is then dewatered. The supernatant and filtrate discharged during the sludge concentration and dehydration process are collected by the drainage system and then discharged back to the waste water storage tank. The sludge discharged from the plate and frame filter press is used for sewage treatment. Mud mixed burning.
本发明工艺具有如下优点： Technology of the present invention has following advantage:
1本发明工艺中废水储池，三维电解池，砂滤罐，二滤池，伴有曝气装置在与处理系统中主要起吹脱作用，去除废水中氯仿，使后续处理构筑物中微生物得以生存，解决中药废水难以生化的缺点。 1 In the process of the present invention, the wastewater storage tank, the three-dimensional electrolytic tank, the sand filter tank, the second filter tank, and the aeration device mainly play a blow-off role in the treatment system to remove chloroform in the wastewater, so that the microorganisms in the subsequent treatment structure can survive , to solve the shortcomings of traditional Chinese medicine wastewater is difficult to biochemical.
2本发明工艺将三维电解用于废水处理中，经过试验得三维电解废水24小时可以降解废水80%的COD，对处理高难度有机废水效果很明显，增大了废水的可生化性。 2. The process of the present invention uses three-dimensional electrolysis in wastewater treatment. After testing, the three-dimensional electrolysis of wastewater can degrade 80% of COD in wastewater within 24 hours, and the effect on treating difficult organic wastewater is obvious, increasing the biodegradability of wastewater.
3本发明工艺将混凝沉淀过滤，吹脱，三维电解，生化处理很好的结合运用，出水水质清澈，工艺成本低。 3. The process of the present invention combines coagulation sedimentation filtration, air blowing, three-dimensional electrolysis, and biochemical treatment to ensure clear water quality and low process cost.
附图说明 Description of drawings
图1是本发明中药废水处理系统的流程图。 Fig. 1 is the flowchart of the traditional Chinese medicine wastewater treatment system of the present invention.
具体实施方式 Detailed ways
下面对照附图对本发明做进一步的说明。 The present invention will be further described below with reference to the accompanying drawings.
中药废水处理工艺系统包括预处理系统，生化处理系统，深度处理系统和污泥处理系统四部分。预处理系统分为水质水量调节和化学预处理两部分。水质水量调节由废水储池组成，化学预处理部分由三维电解池、一级反应沉淀罐、二级反应罐和中间水池组成。废水储池中设置有空气搅拌系统、空气泵和提升泵，废水储池的出水管连通三维电解池，三维电解池内设置有三维电极，三维电解池的出水管连通一级反应沉淀罐，一级反应沉淀罐内部安装有搅拌机，一级反应沉淀罐旁设有第一加药装置，加药为PAC和PAM。一级反应沉淀罐的出水管连通砂滤罐，砂滤罐的出水管连通二级反应罐，二级反应罐旁建有第二加药装置，加药为氧化剂芬顿试剂。二级反应罐的出水管连通二滤池，二滤池内设置石灰石滤料，二滤池的出水管连通中间水池，中间水池内部装有提升泵。 The traditional Chinese medicine wastewater treatment process system includes four parts: pretreatment system, biochemical treatment system, advanced treatment system and sludge treatment system. The pretreatment system is divided into two parts: water quality and quantity adjustment and chemical pretreatment. The water quality and quantity regulation is composed of wastewater storage tanks, and the chemical pretreatment part is composed of three-dimensional electrolytic tanks, primary reaction sedimentation tanks, secondary reaction tanks and intermediate pools. The waste water storage tank is equipped with an air stirring system, an air pump and a lifting pump. The outlet pipe of the waste water storage tank is connected to the three-dimensional electrolytic cell. The three-dimensional electrolytic cell is equipped with a three-dimensional electrode. The outlet pipe of the three-dimensional electrolytic cell is connected to the first-stage reaction sedimentation tank. A mixer is installed inside the reaction precipitation tank, and a first dosing device is installed next to the primary reaction precipitation tank, and the dosing is PAC and PAM. The outlet pipe of the primary reaction sedimentation tank is connected to the sand filter tank, and the outlet pipe of the sand filter tank is connected to the secondary reaction tank. A second dosing device is built next to the secondary reaction tank, and the dosing is the oxidant Fenton's reagent. The outlet pipe of the secondary reaction tank is connected to the second filter tank, and limestone filter material is arranged in the second filter tank, and the outlet pipe of the second filter tank is connected to the middle pool, and the middle pool is equipped with a lifting pump.
生化处理系统包括水解厌氧池和生化沉淀池，中间水池的出水管接入水解厌氧池，水解厌氧池的出水管接入生化沉淀池。深度处理系统包括炭滤池，生化沉淀池的出水管接入炭滤池，炭滤池的出水直接排放。生化处理系统中还包括鼓风机房，鼓风机房的空气管分别连通废水储池、三维电解池、砂滤罐、二滤池生化沉淀池和炭滤池。 The biochemical treatment system includes a hydrolysis anaerobic tank and a biochemical sedimentation tank. The outlet pipe of the intermediate tank is connected to the hydrolysis anaerobic tank, and the outlet pipe of the hydrolysis anaerobic tank is connected to the biochemical sedimentation tank. The advanced treatment system includes a carbon filter, the outlet pipe of the biochemical sedimentation tank is connected to the carbon filter, and the effluent of the carbon filter is directly discharged. The biochemical treatment system also includes a blower room, and the air pipes of the blower room are respectively connected to the waste water storage tank, the three-dimensional electrolytic tank, the sand filter tank, the second filter tank biochemical sedimentation tank and the carbon filter tank.
污泥处理系统包括污泥浓缩池、污泥脱水间，一级反应沉淀罐、砂滤罐、二级反应罐和生化沉淀池的污泥管连接污泥浓缩池，污泥浓缩池的上清液通过出水管排入上清液收集池后进入废水储池，污泥浓缩池的排泥管通过污泥泵接入污泥脱水间，污泥脱水间设置有板框压滤机，从污泥脱水间排出的滤液通过出水管排入上清液收集池后进入废水储池，排出的污泥进行污泥混烧。 The sludge treatment system includes a sludge thickening tank, a sludge dehydration room, a primary reaction sedimentation tank, a sand filter tank, a secondary reaction tank and a biochemical sedimentation tank. The sludge pipe is connected to the sludge thickening tank, and the supernatant of the sludge thickening tank The liquid is discharged into the supernatant liquid collection tank through the outlet pipe and then enters the waste water storage tank. The sludge discharge pipe of the sludge thickening tank is connected to the sludge dewatering room through the sludge pump. The sludge dewatering room is equipped with a plate and frame filter press. The filtrate discharged from the mud dehydration room is discharged into the supernatant liquid collection tank through the outlet pipe and then enters the waste water storage tank, and the discharged sludge is mixed with sludge.
中药废水处理工艺流程包括预处理，生化处理，深度处理和污泥处理四部分。中药废水具有间歇性特点一般来说是每周排放一次，通过车间管道送至废水处理站。在废水处理站设置废水储池，在废水储池中设置空气搅拌系统和空气泵、提升泵，废水储池的旁边设有废气吸收罐。废水储池的储量大于每次废水排放量。在废水储池中设置空气搅拌系统，通过空气泵加入空气，保证废水中悬浮物处于悬浮状态，防止在池底沉淀。 Traditional Chinese medicine wastewater treatment process includes four parts: pretreatment, biochemical treatment, advanced treatment and sludge treatment. Traditional Chinese medicine wastewater has intermittent characteristics. Generally speaking, it is discharged once a week and sent to the wastewater treatment station through the workshop pipeline. A waste water storage tank is set in the waste water treatment station, an air stirring system, an air pump and a lift pump are set in the waste water storage tank, and an exhaust gas absorption tank is arranged beside the waste water storage tank. The storage capacity of the wastewater storage tank is greater than the amount of each wastewater discharge. An air stirring system is installed in the wastewater storage tank, and air is added through an air pump to ensure that the suspended matter in the wastewater is in a suspended state and prevent sedimentation at the bottom of the tank.
废水储池中的废水通过泵提升至三维电解池，三维电解池内的三维电极，使废水中有机污染物在电场作用下发生多效微电解反应，得以去除。废水进入一级反应沉淀罐，一级反应沉淀罐中加入PAC、PAM，搅拌机搅拌均匀后，静止沉淀2h，在砂滤罐过滤，之后电磁阀开启，废水自流进入二级反应罐，在二级反应罐中加入铁离子和双氧水，搅拌机搅拌均匀后，静止沉淀2h后进入二滤池。 The wastewater in the wastewater storage tank is lifted to the three-dimensional electrolytic cell by the pump, and the three-dimensional electrodes in the three-dimensional electrolytic cell enable the organic pollutants in the wastewater to undergo multi-effect micro-electrolysis reactions under the action of an electric field and be removed. The wastewater enters the first-stage reaction precipitation tank, and PAC and PAM are added to the first-stage reaction precipitation tank. After the mixer stirs evenly, it settles for 2 hours and is filtered in the sand filter tank. Add iron ions and hydrogen peroxide into the reaction tank, stir evenly with a mixer, settle for 2 hours, and then enter the second filter.
二滤池内设置的石灰石滤料，一方面可以截留二级反应罐内产生的颗粒污染物，另一方面可以调节废水的pH至中性，保证废水生化的顺利进行。经过二滤池的废水自流进入中间水池，由泵提升后进入生化处理系统。废水从中间水池由泵提升后进入水解厌氧池和生化沉淀池，生化沉淀池由厌氧生物反应器和好氧反应沉淀池组成，废水在生化处理系统中通过微生物的降解，去除有机污染物，废水经过沉淀后，自流进入深度处理系统，生化处理系统24小时连续运转。经生化处理系统后的出水通过炭滤池内活性炭过滤器的过滤处理进一步去除残余污染物，改善出水的感官指标。经过深度处理的废水排入市政管网至城市污水处理厂进一步处理。 The limestone filter material set in the secondary filter can on the one hand intercept the particulate pollutants produced in the secondary reaction tank, and on the other hand adjust the pH of the wastewater to neutral to ensure the smooth progress of wastewater biochemistry. The waste water passing through the second filter flows into the middle pool by itself, and is lifted by the pump before entering the biochemical treatment system. Wastewater is pumped from the intermediate tank and then enters the hydrolysis anaerobic tank and biochemical sedimentation tank. The biochemical sedimentation tank is composed of anaerobic bioreactor and aerobic reaction sedimentation tank. Wastewater is degraded by microorganisms in the biochemical treatment system to remove organic pollutants , After sedimentation, the wastewater enters the advanced treatment system by gravity, and the biochemical treatment system operates continuously for 24 hours. After the biochemical treatment system, the effluent is filtered through the activated carbon filter in the carbon filter to further remove residual pollutants and improve the sensory indicators of the effluent. The advanced treated wastewater is discharged into the municipal pipe network to the urban sewage treatment plant for further treatment.
鼓风机房的空气管分别连通废水储池、三维电解池、砂滤罐、二滤池生化沉淀池、炭滤池。污水预处理系统中一级反应沉淀罐、砂滤罐、二级反应罐、生化沉淀池所产生的污泥排入污泥浓缩池，经过间歇污泥浓缩池进行浓缩污泥，浓缩污泥将由污泥泵送至板框压滤机再进行脱水处理，进一步减小污泥的体积，方便污泥处置和运输。污泥浓缩和脱水过程中排出的上清液及滤液均要由排水系统收集后，排回位于生化处理系统前部的废水储池。 The air pipes in the blower room are respectively connected to the waste water storage tank, the three-dimensional electrolytic tank, the sand filter tank, the biochemical sedimentation tank of the second filter tank, and the carbon filter tank. The sludge produced in the primary reaction sedimentation tank, sand filter tank, secondary reaction tank and biochemical sedimentation tank in the sewage pretreatment system is discharged into the sludge concentration tank, and the sludge is concentrated through the intermittent sludge concentration tank. The concentrated sludge will be collected by The sludge is pumped to the plate and frame filter press for dehydration treatment, which further reduces the volume of the sludge and facilitates sludge disposal and transportation. The supernatant and filtrate discharged during the sludge thickening and dehydration process must be collected by the drainage system and then discharged back to the wastewater storage tank at the front of the biochemical treatment system.
本发明工艺提供一种中药废水处理工艺流程，本领域的技术人员可以对本发明技术方案同等替换或者修改，但都包含在本发明技术方案的范围内，应涵盖在本发明专利权利要求范围内。 The process of the present invention provides a process flow for the treatment of traditional Chinese medicine wastewater. Those skilled in the art can equally replace or modify the technical solution of the present invention, but all are included in the scope of the technical solution of the present invention and should be covered within the scope of the patent claims of the present invention.
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