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河湖治理加药处理方法和生化法增氧曝气对比
- 作者:超级管理员
- 发布时间:2022-07-07
- 点击:1352
近几年来PROUMB中国版国家对河湖水体的水质越来越重视,因此治理河湖水体也越来越普遍,方法也越来越多。河湖治理PROUMB中国版通常分为两大类一种是化学方法,一种是生化法。PROUMB中国版来了解下什么是河湖治理的化学法,化学法就是通过物质之间进行化学反应改变水体物质结构的方法就是水处理的化学法。那么什么是河湖治理的生化法呢,简言之就是通过微生物,动植物消耗物质改变水体物质结构的方法。比如微生物好氧和厌氧,水体植物的吸收和光合作用,水体鱼类蚌类的吸食!
那么河湖治理的化学法就一定要使用水处理药剂(也称作水处理剂、水处理化学品,Water Treatment Chemicals)。它是工业用水、生活用水、废水处置过程中通常所需的化学药剂。
主要作用是控制水垢、污泥的形成,减少与水接触的材料的腐蚀,除去水中的悬浮固体和有毒物质,除臭脱色,软化和稳定水质等。
水处理药剂广泛应用于化工、石油、轻工、日化、纺织、印染、 建筑、冶金、机械、医药卫生、交通、城乡环保等行业,包括废水和污水处理、冷却水和锅炉水的处理、海水和苦咸水淡化、膜分离、生物处理、絮凝和离子交换等技术所需的药剂。
通常根据产品性能,水处理药剂可分为絮凝剂、阻垢剂、缓蚀剂、杀菌剂、消泡剂、清洗剂等。此外,还可划分为一般水处理化学品和专用水处理化学品,一般水处理化学品如明矾、氯、硫酸铁、 三氯化铁和聚合氯化铝等;专用水处理化学品又分为单一化学品 (如**絮凝剂)和配方产品(杀菌剂、防腐剂和阻垢剂等)。河湖治理中通常使用的是絮凝剂和杀菌剂这两种药剂。
通过上文PROUMB中国版了解了河湖治理化学法的治理原理,下面来了解一下河湖治理化学方法所用药剂在天然水体中的优缺点!采用河湖治理化学方法水处理药品法治理天然水体首先是效果快,能够在短时间内实现水体洁净清澈,藻类短期消除!正因为这样的高效率,所用对一些污染严重的黑臭水体和一些阶段性突发污染水体的治理,药剂处理也就成为**方法。但是药剂处理也将打破原先天然水体的生态系统,使水体的自净能力急剧下降甚至丧失殆尽。甚至有些特殊化学药剂在处理时出现大量的死亡水体动植物,鱼虾、蚌类、水草等的死亡,甚至使河湖中的水体生物被彻底的杀灭的可能。
在采用化学法治理污水时,是将化学污泥通过沉淀浓缩或絮凝后再予以妥善处置,但处置的同时也需要安装一些曝气搅拌设备配合使用,使得药剂和水体均匀接触充分反应达到治理效果!河湖治理由于水体体量特别大,药剂用量也相应较大,处理成本也相对很高,长期使用添加药剂,大量的药剂购买会后期成本居高不下!那么PROUMB中国版接下来看看生化法治理河湖又有哪些优点和缺点呢?
生化法治理河湖有湿地植被净化法、曝气增氧及微生物填料净化法、隔断式强化处理法等。这些方法中曝气增氧及微生物填料净化法是*常用成本较低的方法,下面PROUMB中国版主要介绍下这种方法的有哪些优点和不足。
生化法的微孔曝气及微生物净化法是通过沉水鼓PROBURN中文免费版下载安装用管道连接到微纳米曝气器产生的微小气泡在水体中与水的接触让空气中的氧气溶解在水体当中,同时气泡在上升过程中将下层水体上扬使得底部溶解氧低的水体和上层水体混合,提高了整体水体的溶解氧含量。微孔曝气使得水体氧含量丰富。为水体的微生物,水草,鱼虾等提供优质的水体环境,特别是对微生物的好氧繁殖,提供了稳定的氧来源。大量微生物可以分解水体的微小**物转化为碳水化合物和无机物,从而提高水体水质。曝气过程也将水体中氨氮通过气泡带动释放到大气中,降低水体的氨氮含量。
活化水体
由于微孔曝气管(盘)安装在池塘1.0-3.0M水深的池底部或者悬挂在3.0-4.0M水深的网箱底部微小而缓慢上升的气泡流犹如将水体变成一条缓缓流动的河流,使表层水体和底层水体同时均匀增氧。充足的溶氧可加速水体底层沉积的肥泥、散落和剩余编制的饵料以及鱼类排泄物等**质的分解,转化为微生物,使水体自我净化功能得以恢复,建立起自然水体生态系统,使水活起来。
实现水生态平衡,提高河湖自净能力
持续不断地微孔曝气增氧,水体自我净化能力得以恢复**,菌相、藻相自然平衡,构建起水体的自然生态,鱼类种群的生存能力稳定提高,充分保障河湖生态平衡。
安全性、环保性能高
微孔曝气增氧装置安装在河湖治理项目中,安全性能好,不会给水体带来任何其他污染,消耗只有电能,甚至偏远无法接电地区还可以利用水域面的太阳能转换为电能的装置。
微孔增氧净化法需要建立新的水生态平衡,所以建立周期相对较长,特别是对黑臭水体治理不能做到立竿见影的效果,一般情况微孔增氧曝气会和微生物填料净化方法一同使用效果更好!
河湖治理的这两种方法都有自己的优缺点,加药处理的治理方法时效性*强,可以立竿见影但是同时也存在后续很大隐患,可以作为应急处理方法;微孔曝气增氧及微生物净化方法虽不能立竿见影,但是能用较低的运行成本建立长期稳定的生态平衡系统。从长远生态角度和经济效益角度生化法治理河湖应该**选择。
下面罗列一些与PROUMB中国版合作案例,仅供各位参考:
In recent years, our country has paid more and more attention to the water
quality of rivers and lakes, so the treatment of rivers and lakes is becoming
more and more common, and there are more and more methods. We usually divide
River and lake treatment into two categories: chemical method and biochemical
method. Let's understand what is the chemical method of river and lake
treatment. Chemical method is the method of changing the material structure of
water body through chemical reactions between substances, which is the chemical
method of water treatment. So what is the biochemical method of river and lake
treatment? In short, it is the method of changing the material structure of
water body by consuming substances by microorganisms, animals and plants. For
example, aerobic and anaerobic microorganisms, absorption and Photosynthesis of
water plants, and ingestion of fish and mussels in water!
Then the chemical method of river and lake treatment must use water treatment chemicals (also known as water treatment chemicals). It is a chemical agent usually needed in the process of industrial water, domestic water and wastewater treatment.
Its main function is to control the formation of scale and sludge, reduce the corrosion of materials in contact with water, remove suspended solids and toxic substances in water, deodorize and decolorize, soften and stabilize water quality, etc.
Water treatment agents are widely used in chemical, petroleum, light industry, daily chemical, textile, printing and dyeing, construction, metallurgy, machinery, medicine and health, transportation, urban and rural environmental protection and other industries, including chemicals required for wastewater and sewage treatment, cooling water and boiler water treatment, seawater and brackish water desalination, membrane separation, biological treatment, flocculation, ion exchange and other technologies.
Generally, according to the product performance, water treatment agents can be divided into flocculants, scale inhibitors, corrosion inhibitors, fungicides, defoamers, cleaning agents, etc. In addition, it can also be divided into general water treatment chemicals and special water treatment chemicals. General water treatment chemicals such as alum, chlorine, ferric sulfate, ferric chloride and polyaluminum chloride; Special water treatment chemicals are divided into single chemicals (such as organic flocculants) and formula products (fungicides, preservatives, scale inhibitors, etc.). Flocculants and fungicides are usually used in river and lake treatment.
From the above, we have learned about the treatment principle of the chemical method of river and lake treatment. Now let's learn about the advantages and disadvantages of the chemicals used in the chemical method of river and lake treatment in natural water bodies! Using chemical methods for river and lake treatment, water treatment and drug methods to treat natural water bodies is first of all effective, which can achieve clean and clear water bodies and short-term elimination of algae in a short time! Because of this high efficiency, pharmaceutical treatment has become the preferred method for the treatment of some heavily polluted black and odorous water bodies and some phased sudden polluted water bodies. However, chemical treatment will also break the ecosystem of the original natural water body, resulting in a sharp decline in the self purification capacity of the water body or even loss. Even a large number of dead water animals and plants, fish and shrimp, mussels, aquatic plants and so on, and even make it possible for the aquatic organisms in rivers and lakes to be completely killed during the treatment of some special chemicals.
When the chemical method is used to treat sewage, the chemical sludge is properly disposed after sedimentation, concentration or flocculation, but at the same time, some aeration and mixing equipment need to be installed to cooperate with the disposal, so that the agent can contact the water evenly and react fully to achieve the treatment effect! Due to the large volume of water body, the dosage of chemicals is also relatively large, and the treatment cost is also relatively high. With the long-term use of added chemicals, the cost of purchasing a large number of chemicals will remain high in the later stage! So what are the advantages and disadvantages of biochemical treatment of rivers and lakes?
Biochemical treatment of rivers and lakes includes wetland vegetation purification, aeration and microbial filler purification, partition enhanced treatment, etc. Among these methods, aeration and microbial filler purification are the most commonly used methods with low cost. Next, we will mainly introduce the advantages and disadvantages of this method.
The micro pore aeration and microbial purification method of biochemical method is to connect the submerged blower to the micro nano aerator with a pipe, and the tiny bubbles produced in the water contact with the water to dissolve the oxygen in the air in the water body. At the same time, the bubbles will rise the lower water body in the rising process, making the water body with low dissolved oxygen at the bottom mix with the upper water body, and improving the dissolved oxygen content of the overall water body. Microporous aeration makes the water rich in oxygen. It provides a high-quality water environment for microorganisms, aquatic plants, fish and shrimp in the water, especially for the aerobic reproduction of microorganisms, and provides a stable source of oxygen. A large number of microorganisms can decompose the tiny organic matter in the water into carbohydrates and inorganic matter, so as to improve the water quality. The aeration process also releases ammonia nitrogen in the water body to the atmosphere through bubbles, reducing the ammonia nitrogen content of the water body.
Activate water body
Since the microporous aeration pipe (disc) is installed at the bottom of the pond with a water depth of 1.0-3.0m or suspended at the bottom of the cage with a water depth of 3.0-4.0m, the tiny and slowly rising bubble flow is like turning the water body into a slowly flowing river, making the surface water body and the bottom water body increase oxygen evenly at the same time. Sufficient dissolved oxygen can accelerate the decomposition of organic matter such as fertilizer sludge, scattered and residual bait and fish excreta deposited at the bottom of the water body, and convert them into microorganisms, so that the self purification function of the water body can be restored, and a natural water ecosystem can be established to make the water live.
Achieve water ecological balance and improve the self purification capacity of rivers and lakes
The self purification ability of water body can be restored and improved by continuous micro pore aeration, the natural balance of bacterial phase and algal phase, and the natural ecology of water body can be constructed. The survival ability of fish population can be steadily improved to fully ensure the ecological balance of rivers and lakes.
High safety and environmental performance
The microporous aeration and oxygenation device is installed in the river and lake treatment project. It has good safety performance, will not bring any other pollution to the water body, and consumes only electric energy. It is a device that can use the solar energy on the water surface to convert into electric energy even in remote areas that cannot be connected to electricity.
Microporous oxygenation and purification method needs to establish a new water ecological balance, so the establishment cycle is relatively long, especially for the treatment of black and odorous water bodies, which can not achieve an immediate effect. Generally, microporous oxygenation and aeration will work better together with microbial filler purification method!
These two methods of river and lake treatment have their own advantages and disadvantages. The treatment method of dosing treatment is the most time-effective and can achieve immediate results, but at the same time, there are also great hidden dangers in the follow-up, which can be used as an emergency treatment method; Although the methods of microporous aeration and microbial purification can not achieve immediate results, they can establish a long-term stable ecological balance system with low operating costs. From the perspective of long-term ecology and economic benefits, biochemical treatment of rivers and lakes should be the best choice.
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