I. application profile:
Liyuan company handles the various kinds of industrial waste water, waste liquid and membrane separation technology in the production process of various industries to reduce the emission of enterprises. Industrial wastewater treatment and reuse
In the fields of power, metallurgy, petroleum, chemical, electronics, pharmaceutical, papermaking, printing and dyeing, there is a large amount of industrial waste water, which is of great variety and large amount of water.
Water consumption is an important factor for development. In some countries the recycling of this water is promoted to strategic height. China is no exception, liyuan company is committed to recycling and recycling industrial waste water, introducing international advanced membrane technology, and changing wastewater into high grade industrial water to meet the needs of all kinds of users.
The process flow of waste water recovery principle is:
Purification of wastewater from sewage treatment plants - ultrafiltration (UF) - reverse osmosis (RO) - UV disinfection (UV) - post-treatment (PT)
For water conservation, such as electric power, electronics, petroleum, chemical, pharmaceutical, steel, smelting, paper making, textile, printing and dyeing, food and so on industry, according to different user, different discharge types, provide a solution, make the discharge amount of 70 ~ 90% recycled.
Industrial waste water treatment, water quality can be applied to the index, re-use to the user, to reduce water consumption and production cost. Liyuan company is committed to the technology of water recovery in membrane process, which enables users to achieve good social and economic benefits.
Our company has a number of highly qualified technical personnel and management personnel, paying attention to water treatment technology at home and abroad the latest development of dynamic, can provide customers with all kinds of water and wastewater treatment problem of economic and effective solutions, and can provide customers with the design of water treatment systems, manufacturing, construction, installation, commissioning and operation of the whole process service.
Ii. Business scope
A, water investment
B. Project consultation and design
C. general contracting of projects
D. Technical services
E. Operation management
The waste water treatment of thermal power plant, all kinds of open cooling water, water supply treatment and condensate treatment process produce flushing water, chemical cleaning water, reclaimed wastewater. The industrial water, cleaning water, etc. After collecting and processing, the process system of initial pH adjustment, flocculation, clarification and final neutralization treatment is adopted. After treatment, clean water is put into the clean water tank to be used for recycling, and the target of energy saving and water-saving can be achieved. The system is also equipped with medicine storage, dilute liquid preparation and measurement system. Automatic valve, on-line instrument and automatic control equipment, etc., realize automatic operation.
- oil wastewater treatment process:
The oil-bearing waste water of power plant mainly has the oil-bearing water which is brought into the oil tank in the lubricating water of the auxiliary engine, the oil pump sealing cooling water, the oil tank in the boiler room, and the equipment when the equipment is overhauled. The main technological process is as follows:
Lift pump - grease - out of water
- chemical wastewater treatment process:
The main sources of chemical wastewater of power plant are boiler acid washing wastewater, boiler discharge sewage, boiler recharge water system regeneration wastewater, condensate water system recycling wastewater, etc. The main technological process is as follows:
Chemical wastewater - additive coagulation - effluent
- desulfurization wastewater treatment process:
Desulphurization wastewater is mostly acidic and contains more suspensions, heavy metals, COD and fluoride, mainly from flue gas, supplemental water and desulfurizer. The main technological process is as follows:
Desulphurization wastewater - alkali - flocculation - pH adjustment - water outlet
- waste water treatment process:
The coal water - the addition of coagulant - water
- sewage treatment process
Living sewage - pretreatment - biochemical method - sterilization - filtration - reuse
"Rich coal less oil in our country is short of gas" resources present situation, determined the coal gas, coal, liquid fuels and chemicals, advanced coal gasification and other advanced coal conversion technology and the project is still worth deployment and dwellings. Coal chemical projects is high water consumption, high polluting, wastewater emissions big, variety, to technology division of gasification, desulfurization, transformation, synthesis, distillation, such as wastewater, including many manipulation such as water treatment, water use, waste water treatment unit. The coal chemical project is a high water consumption project, so as to reduce the water consumption of the enterprise, so as to decontamination and waste water reuse.
- main features of coal chemical wastewater:
1. Complex ingredients, containing a large amount of oil, sulfide, phenols, etc., should be pretreated.
2. Higher concentration of ammonia nitrogen.
- main processing technology:
Materialized pretreatment + multistage A/O biochemical treatment + physicochemical depth treatment
According to the production process, pharmaceutical industry waste can be divided into fermentation, chemical synthesis, extraction, biological engineering and biological products, traditional Chinese medicine, mixing and processing. Pharmaceutical wastewater is one of the more difficult high concentrations of organic wastewater, because of different drug products and different production techniques. In addition, the pharmaceutical factory usually adopts intermittent production, and the variety of products varies greatly, resulting in a large change in the water quality, water quantity and pollutant types of wastewater.
- main features of pharmaceutical wastewater:
Pollutant composition is more complex, high pollutant content, less biochemical, more toxic and harmful substances.
- technical features:
1. The pretreatment measures such as microelectrolysis and high catalytic oxidation are taken for the high concentration of refractory wastewater.
2. According to the water quality characteristics of different pharmaceutical waste water, the pollutants can be removed by means of anaerobic, hydrolysis, aerobic and other biochemical combinations.
3. The depth treatment technology of fenton and ozone.
Food industry including meat processing, aquatic product processing dairy processing, canned production, brewing, sugar, and many other industries, food industrial raw material widely, therefore, there are many different kinds of products and the effluent water quantity, water quality difference is very big. The biggest difference with other industrial waste water is that the waste water in food industry generally does not contain heavy metals, pesticides and other harmful substances. But its BOD, COD and so on general meeting is high. Because most of the raw materials used in the food industry are organic materials that are digested by people. Therefore, the biodegradability of food industry wastewater is generally better.
- main features of food waste water:
1. Drainage rule: intermittent drainage, large change in water volume;
2. Water quality of wastewater is affected by seasonal changes;
3. The concentration of BOD and COD is higher, and B/C is between 0.4 and 0.5.
4. The discharge of defective and expired wastes has a great impact on water quality; Propose separate treatment or quantitative discharge;
5. The impact of subgrade and CIP wastewater, COD and pH change frequently.
- main processing technology:
Pretreatment + biochemical treatment + depth treatment
Wastewater reuse, also known as recycling, refers to the recycling of sewage into industrial, agricultural, urban miscellaneous, landscape recreation, supplementary surface water and groundwater. The importance of wastewater reuse treatment is to make the water resources rational utilization and make it play the most comprehensive benefit.
Force source of water reuse technology is to use the advanced composite membrane bioreactor process, membrane bioreactor (MBR) is a wastewater biochemical treatment and physicochemical treatment, biological degradation of organic matter, microfiltration and ultrafiltration membrane filtration on the combination of solid-liquid separation technology of a new type of high efficient wastewater treatment and recycling process. The treated water is clear and transparent water.
The water source for water reuse is divided into municipal miscellaneous water, living water and industrial users. With the increasing of water shortage in many parts of our country, the water reuse in industry will show its superiority and vitality more and more.
(1) - domestic sewage
(2) municipal sewage treatment works
(3) to handle industrial drainage of the standard
- business areas
A. Industrial waste water recycling system (including: dyeing, paper making, petrochemical, coal chemical, power plant, etc.)
B. Water recycling system in industrial buildings and residential areas
C. Urban water system