SJY Denitrification Activated Sand Biofilter

With the continuous introduction of environmental protection policies, the effluent discharge standards of urban sewage treatment plants have been raised from National Standard Level B to National Standard Level A, and then from National Standard Level A to Standard IV and III, respectively. The three main water quality problems faced by sewage treatment plants are TN, TP, and SS. Denitrification filters can simultaneously intercept SS and remove TN, and have been increasingly applied in sewage treatment plant upgrading and new construction projects. However, several commonly used denitrification filters currently have the following shortcomings: (1) filter material is prone to clogging, (2) hydraulic loss is high, and (3) operating energy consumption is high In order to address the drawbacks of traditional denitrification filters, our company has compared the advantages and disadvantages of various filters and identified activated sand filters as carriers. Through experiments and engineering applications, we have independently developed a denitrification activated sand biological filter. The filter material is not compacted, the hydraulic loss is small, and the operating energy consumption is low.

SJY反硝化活性砂生物滤池Process Introduction:

Denitrification activated sand biofilter is an efficient filter that integrates filtration and biological treatment, developed through technological improvement and innovation on the basis of traditional activated sand filters. It overcomes the major problem of static filtration tank clogging, single treatment indicators, limitations, and large flushing water volume. It not only has the advantages of traditional active sand filter, but also has biological treatment function, with a nitrogen removal rate of 5-10mg/L, effluent SS can be more stable within 5mg/L, and flushing water volume ≤ 5%.

◼ Save space and complete filtration and denitrification biological treatment functions in the same filter; Can effectively remove SS and TN from raw water

◼ No need for high head and large flow backwash pumps, further reducing operating costs

◼ Easy to maintain, with no rotating parts except for the dedicated composite filter material, low failure rate, and low maintenance costs;

◼ Small head loss. Due to the use of composite filter material and timely cleaning of the filter material, the water head loss of the filter is very small, generally ≤ 0.8m

◼ Easy to operate, good filtration effect, strong shock load resistance, high-quality and stable effluent effect, no periodic water quality fluctuations

◼ Composite filter media has a large specific surface area, strong adsorption and interception capabilities, and can selectively and efficiently remove organic matter

Application Scenario:

1. Drinking water treatment

2. River pollution control

3. Tail water treatment of sewage treatment plants and utilization of industrial circulating water

4. Advanced treatment of municipal and industrial wastewater

SJY反硝化活性砂滤池Technical advantages:

◼ Save space and complete filtration and denitrification biological treatment functions in the same filter; Can effectively remove SS and TN from raw water

◼ No need for high head and large flow backwash pumps, further reducing operating costs

◼ Easy to maintain, with no rotating parts except for the dedicated composite filter material, low failure rate, and low maintenance costs;

◼ Small head loss. Due to the use of composite filter material and timely cleaning of the filter material, the water head loss of the filter is very small, generally ≤ 0.8m

◼ Easy to operate, good filtration effect, strong shock load resistance, high-quality and stable effluent effect, no periodic water quality fluctuations

◼ Composite filter media has a large specific surface area, strong adsorption and interception capabilities, and can selectively and efficiently remove organic matter.

◼ The system runs automatically and backwashs once every 24 hours; Rinse water volume ≤ 5, regular inspection and maintenance

◼ Ultra low loss of filter material. The anti sand running device ensures that the two-year filter material loss rate is less than 1% of the total amount of filter material added