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Textile printing and dyeing industry
PROJECT OVERVIEW
As early as 1955, Dongli established its first overseas trading company in Hong Kong, China. With the changes of the times, in 2002, (China) Investment Co., Ltd. was established in Shanghai as the core base for Dongli Group to carry out business in China. It fully played the overall and management functions of the investment headquarters in China and provided important support for the business advancement of the group's 38 affiliated companies in China (as of the end of March 2022).
PROJECT INTRODUCTION
Source of exhaust gas
Production workshop
Exhaust gas volume
5,000m³/h
Composition of exhaust gas
H ₂ S, NH ₂ and odor, etc
Project location
Nantong City, Jiangsu Province
ECLEAR SOLUTION
Design air volume
5,000m³/h
Design process
YQWT acid washing+YQWT alkali washing
Pre washing system
The exhaust gas is collected by covering the sewage tank and then enters the pre-treatment section of the biofilter through pipelines. The acidic gases (such as H ₂ S) in the exhaust gas are neutralized and washed using alkaline solution.
Biological reaction system
The waste gas that has been chemically washed with alkaline solution passes through the biofilter treatment section of the biofilter, and passes through the filter bed composed of filter media from bottom to top. The foul odor gas is transferred from the gas phase to the water microbial mixed phase, and is decomposed by the microbial metabolism fixed on the filter media.
Exhaust emission system
The exhaust gas treatment and emission system consists of explosion-proof fans and high-altitude emission pipelines to achieve exhaust gas emission standards and heights.
COMPLIANCE REQUIREMENT
| Odor components | Odor inlet indicators | Odor discharge indicators | Exhaust pipe height |
| H2S | ≤100mg/m3 | ≤0.6kg/h | 15m |
| NH3 | ≤40mg/m3 | ≤0.6kg/h | |
| C2H6S | ≤50mg/m3 | ≤0.6kg/h | |
| Odour | ≤3000 | ≤800 |
PROJECT SITE
ADVANTAGES OF ECLEAR
Strength guarantee
More than 20 waste gas treatment technologies developed by the Sino British joint venture team of a national high-tech enterprise
Quality assurance
Stable operation of over 200 project cases without any worries
after-sale service
Having an after-sales team to provide free 24-hour online service
Technical team
The team members have over ten years of experience in exhaust gas treatment, including three registered HVAC engineers, two registered plumbing and drainage engineers, and two construction engineers
Source manufacturer
High cost-effectiveness of equipment engineering helps you better control costs
Environmental compliance
Full process management services make it easy for you to cope with the environmental protection bureau acceptance of meeting the new exhaust emission standards
Eclear Environmental RELATED EQUIPMENT
Spray tower
Spray tower, as a type of environmental waste gas treatment equipment, exists. According to its working principle, it can be divided into circulating water spray tower, alkali spray tower, and acid spray tower (also known as acid washing tower). According to the material of the tower, it is divided into fiberglass spray towers, PP spray towers, and stainless steel spray towers. Choose a reasonable spray material and spray process based on the different properties of the exhaust gas. Spray tower is an important industrial waste gas treatment equipment, whose working principle is to use water and power technology to spray liquid or gas in a mist form into the waste gas, in order to remove harmful substances in the waste gas.
Activated carbon adsorption box
Activated carbon adsorption box is an environmentally friendly mechanical product that filters waste gas and adsorbs odors. This equipment is used to clean organic chemical waste gas and spray waste gas with high concentration. Activated carbon has a high-strength adsorption level. When the waste gas is powered by a centrifugal fan, negative pressure enters the adsorption box and then enters the activated carbon adsorption layer, it has a very good adsorption effect on organic solution waste gas.
Adsorbent
The core of Eclear waste gas treatment system is Eclear dry gas phase filtration material. The Eclear dry gas phase filtration material is made using a proprietary special process and is spherical and porous in particle shape. The adsorption filter material removes odorous gases through chemical adsorption. When the collected odorous gases pass through the filter material, a chemical reaction occurs instantly when the filter material comes into contact with the odorous gas, thereby quickly and effectively removing the odorous gas. In the process of removing odorous gases, they are converted into harmless salts, which are irreversible. Once pollutants are removed from the environment, they cannot return to the air, effectively preventing secondary pollution of the air environment and ensuring safety and environmental protection.
Washing tower
Washing tower is a mature waste gas treatment equipment widely used in pre-treatment of industrial waste gas treatment, dust removal, and other aspects. Gas enters the tower and fully contacts, adsorbs, and dissolves with the washing liquid inside the tower, achieving purification effect. The design forms of Yi cleaning towers are diverse, and vertical or horizontal structures can be used according to the project application site. The commonly used materials for washing tower equipment include PP, FRP, and stainless steel. PP and FRP are commonly used in chemical absorption towers and have the characteristics of acid resistance, alkali resistance, and corrosion resistance. Stainless steel materials can be used for high-temperature exhaust gas.
VOCs integrated processing equipment
The activated carbon adsorption box (YQA all-in-one machine) is a VOCs waste gas treatment equipment developed by Eclear Environmental through years of research and engineering experience combined with the photocatalyst technology of university research institutions. It adopts a dual process combination of photocatalytic oxidation and activated carbon adsorption, as well as an integrated design concept.
