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Municipal sewage industry
PROJECT OVERVIEW
The project is located at the junction of Huilong Town and Huiping Town in Qidong City. It belongs to the artificial ecological wetland purification project for the tail water of the Second Urban Sewage Treatment Plant in Qidong City. The total investment is 63.5263 million yuan (including environmental protection investment of 11.9185 million yuan), and the engineering land area is about 20 hectares (the core purification treatment area of the wetland is about 80000 square meters). The recent design inflow scale is 40000 cubic meters/day, and the long-term inflow scale is 80000 cubic meters/day. The main project includes tail water discharge pipes, ecological ponds, surface flow wetlands, subsurface wetlands, submerged plant ponds, etc., with supporting construction of public and auxiliary projects and ecological environmental protection projects. The environmental impact assessment documents for the Qidong City Second Sewage Treatment Plant project have been approved (Qixing Shenhuan [2023] No. 45) and construction has been implemented. The project has been approved for approval (project code: 2204-320681-89-01-753687).
PROJECT INTRODUCTION
Source of exhaust gas
Mainly generated in sewage pumping stations, inlet grilles, aeration sedimentation tanks, sludge treatment facilities, as well as sludge concentration, dehydration and drying, transportation, thermal drying, composting, and other places during the sludge treatment process.
Exhaust gas volume
12,000m³/h
Composition of exhaust gas
H ₂ S, NH ₂ and odor, etc
Project location
Qidong City, Nantong City, Jiangsu Province
ECLEAR SOLUTION
Design air volume
12,000m³/h
Design process
YQD Biofilter Deodorization System
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 from alkaline washing is treated by a biofilter and then transferred through the filter bed to the water microbial mixed phase, where the foul odor gas is metabolized and decomposed by microorganisms.
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.
Biological filter
A biological filter is a device that uses effective deodorizing bacteria and a reasonable equipment structure to oxidize and decompose large molecules or structurally complex organic matter into simple inorganic substances such as water and carbon dioxide through differentiation. Eclear Environmental Biological Filter has been improved compared to its peers, adopting an integrated treatment process of pre-treatment and deep adsorption of biological treatment to ensure the stability of the intake during the biological treatment stage. At the same time, deep treatment is not configured at the end, which can ensure that the exhaust gas meets the standard when the emission concentration exceeds the design.
Biological strains
Eclear uses specialized composite bacterial strains, including methane producing bacteria, actinomycetes, Bacillus, yeast, and other bacterial strains, which can target the treatment of odorous components such as hydrogen sulfide, ammonia, and VOCs. Adopting a combination of heterotrophic and autotrophic bacteria, according to the composition of exhaust gas, the microbial composition is reasonably proportioned, taking into account the treatment of organic and inorganic pollutants. Microbial strains have high purity, fast biofilm formation, high activity, and high treatment efficiency, which have significant advantages compared to conventional single strains. Combined with biological enzyme products, it effectively and gently catalyzes the decomposition of pollutants by microorganisms, making their decomposition more targeted and achieving better treatment results for odor pollutants.
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.
Biological deodorization
Biological deodorization is the process of using effective deodorizing bacteria and a reasonable equipment structure to oxidize and decompose large molecules or structurally complex organic matter into simple inorganic substances such as water and carbon dioxide through differentiation. Eclear Environmental Biological Deodorization has been improved compared to its peers, adopting an integrated process of pre-treatment and deep adsorption of biological treatment to ensure the stability of the intake during the biological treatment stage. At the same time, deep treatment is not configured at the end, which can ensure that the exhaust gas meets the standard emission when the emission concentration exceeds the design emission concentration.
Biofiller
Biofillers commonly used include bamboo charcoal, tree bark, fruit shell carbon, volcanic rock, plastic fillers, ceramic particles, etc. Combined with biological strains and enzyme products, they effectively and gently catalyze the decomposition of pollutants by microorganisms, making their decomposition more targeted and achieving better treatment effects on odor pollutants.
