1、 Overview of High Concentration Organic Wastewater Treatment

Water is a necessity for human life and survival. With the rapid development of technology and the increasing demand from people, the discharge of high concentration, difficult to biodegrade organic pollutants and ammonia nitrogen compounds in organic wastewater has doubled. Due to the different properties and sources of high concentration organic wastewater, it has the characteristics of high pollutant content, high toxicity, scattered discharge points, low water volume, complex treatment process, high investment and operating costs, and difficult management. Using physical and chemical methods to treat this wastewater is costly, with a treatment cost of tens of yuan per ton of water. The reason is that the COD of these wastewater is high, and conventional biochemical methods cannot be directly used for treatment; Alternatively, due to the presence of certain compounds that cannot be biodegraded by organisms, the high treatment costs result in a large amount of high concentration and difficult to degrade organic wastewater being discharged without effective treatment. Therefore, researching the treatment of high concentration and difficult to degrade organic wastewater is an issue that every electroplating factory should pay attention to.

The high concentration organic wastewater treatment equipment developed and produced by Dongguan Gaoda Environmental Protection Technology Co., Ltd. is a high-tech environmental protection product that purifies the organic matter in the wastewater to meet the effluent water quality standards.

2、 Application fields of high concentration organic wastewater treatment equipment

Petroleum, chemical, pharmaceutical, leather, paper, industrial, food and other industries

3、 Treatment methods for high concentration organic wastewater

1. Physical and chemical treatment techniques, commonly used methods include extraction, adsorption, concentration, and ultrasonic degradation.

2. Chemical treatment technology, the main methods of which include incineration, Fenton oxidation, ozone oxidation, electrochemical oxidation, etc.

3. Biological treatment technology, according to different reaction conditions, microbial treatment methods can be divided into two categories: aerobic biological treatment and anaerobic biological treatment

4、 Characteristics of high concentration organic wastewater equipment

1. The concentration of organic matter in high concentration organic wastewater is high. COD is generally above 2000 mg/L, and some can even reach tens of thousands or even hundreds of thousands of mg/L. Relatively speaking, BOD is relatively low, and the ratio of BOD to COD in many wastewater is less than 0.3.

2. The composition of high concentration organic wastewater is complex. The organic compounds in wastewater containing toxic substances are mainly aromatic compounds and heterocyclic compounds, as well as sulfides, nitrides, heavy metals, and toxic organic compounds.

3. High concentration organic wastewater has high chromaticity and odor. Some high concentration organic wastewater emits a pungent odor, causing adverse effects on the surrounding environment.

4. In the ultra-high concentration organic wastewater generated by industrial wastewater, there are numerous acids and bases, often with strong acids or strong alkalis.

5. The organic pollutants contained in non biodegradable organic wastewater have a complex structure. Most of these types of wastewater have extremely low BODSC/OD, poor biodegradability, and are toxic to microorganisms, making it difficult to treat using general biochemical methods.

5、 Classification of Treatment Characteristics for High Concentration Organic Wastewater

1. The organic matter in wastewater is easily biodegradable, and the toxic content in wastewater is very low. This type of wastewater mainly includes domestic sewage and industrial wastewater from agricultural and animal husbandry products as raw materials;

2. Organic matter in wastewater is easily biodegradable, and there are also high levels of toxins in the wastewater. This type of wastewater mainly comes from printing and dyeing, leather making wastewater, etc;

3. The organic matter contained in wastewater is difficult to biodegrade (biodegradation rate is extremely slow), and at the same time, there may be more or less toxic substances in wastewater. This type of wastewater mainly comes from papermaking, pharmaceutical wastewater, etc.

6、 The Three Major Hazards of High Concentration Organic Wastewater

1. It is an aerobic hazard; 2. It is sensory pollution; 3. It is a toxic hazard.

Industrial wastewater treatment parameters

7、 Harmless treatment of high concentration organic wastewater

This is determined by the relative thoroughness of biological treatment (no secondary pollution or minimal secondary pollution) and the low operating costs. For high concentration organic wastewater that is difficult to biodegrade, a combination of pretreatment and biochemical treatment should be adopted, and the key is the pretreatment before biochemistry. Through pretreatment, substances that have inhibitory effects on biochemistry in the wastewater can be reduced, and large molecular organic matter can be decomposed into small molecular organic matter to improve the biodegradability of organic wastewater. In addition, incineration can also be used, but this method has some drawbacks: ① the amount of high concentration organic wastewater is limited by the matching boiler; ② Detailed analysis should be conducted on the composition of high concentration organic wastewater to ensure that it does not affect the combustion of the boiler body This law needs further in-depth theoretical research.

8、 Adsorption method uses solid adsorbents

The method of enriching one or more components in high concentration organic wastewater on the solid surface. The commonly used adsorbents include activated carbon and resin, but the regeneration and elution of activated carbon are difficult; Resin adsorption has a wide practical range, is not affected by inorganic salts in high concentration organic wastewater, has good adsorption effect, is easy to wash and regenerate, and has stable performance. Therefore, in the treatment of ultra-high concentration organic wastewater, the most commonly used adsorbent is resin adsorbent. Resin adsorption method can be used to treat high concentration organic wastewater containing phenols, aniline, organic acids, nitro compounds, pesticides, dye intermediates, etc. It is an effective method for treating high concentration organic wastewater.

9、 Reclaimed water system for high concentration organic wastewater treatment

Physical and chemical disinfection processes can be used, as follows:;

Source Water --->Regulating Tank --->Filtration Tank --->Disinfection Tank --->Storage Tank --->Discharge When using residential sewage as the source of reclaimed water, the biochemical+disinfection process can be used, as follows: Source Water --->Hydraulic Screen --->Regulating Tank --->Biochemical Tank --->Filtration Tank --->Disinfection Tank --->Storage Tank --->Discharge The above process facilities can be designed as above ground or underground structures according to the specific situation on site.

10、 Service Guide

1. In order to create better wastewater treatment equipment, the parameters of this product will change with the continuous improvement of the equipment by the company. Please keep in touch with our company at all times.

If the equipment parameters you want are different from those in this manual, our company can make design changes according to the customer's requirements.

11、 How to choose good wastewater treatment equipment

Choosing a reliable manufacturer is crucial when selecting a good wastewater treatment equipment.

Gaoda Environmental Protection Technology specializes in customized production of sewage treatment equipment suitable for you, just for your satisfied smile.

With 15 years of experience in the environmental protection industry, we have provided high-quality equipment to thousands of enterprises, and Gundam Environmental Protection Technology is even more trustworthy.

A self-produced and self selling enterprise with guaranteed quality and quantity is a better choice.